{"id":24057,"date":"2024-05-08T15:48:10","date_gmt":"2024-05-08T07:48:10","guid":{"rendered":"https:\/\/zetarmold.com\/?p=24057"},"modified":"2026-04-09T08:18:32","modified_gmt":"2026-04-09T00:18:32","slug":"processo-de-moldagem-por-injecao-3","status":"publish","type":"post","link":"https:\/\/zetarmold.com\/pt\/processo-de-moldagem-por-injecao-3\/","title":{"rendered":"Qual \u00e9 o fluxo do processo de moldagem por inje\u00e7\u00e3o?"},"content":{"rendered":"<h2 class=\"wp-block-heading\"><strong>Pref\u00e1cio<\/strong><\/h2>\n<p><a href=\"https:\/\/zetarmold.com\/pt\/injection-mold-complete-guide\/\">Molde de inje\u00e7\u00e3o<\/a>A moldagem por inje\u00e7\u00e3o, tamb\u00e9m conhecida como moldagem por inje\u00e7\u00e3o de pl\u00e1stico, \u00e9 um m\u00e9todo comum de fabrica\u00e7\u00e3o de produtos pl\u00e1sticos. Como uma tecnologia de processamento de pl\u00e1stico madura, os materiais de moldagem por inje\u00e7\u00e3o t\u00eam amplas perspectivas de desenvolvimento. Com o surgimento de novas tecnologias, novos materiais e novas demandas, a moldagem por inje\u00e7\u00e3o continuar\u00e1 a adaptar-se \u00e0s mudan\u00e7as do mercado e a desenvolver-se de forma inovadora, fornecendo produtos pl\u00e1sticos de maior qualidade para a fabrica\u00e7\u00e3o industrial e para os consumidores.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"337\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/20170712143257_5796.jpg\" alt=\"\" class=\"wp-image-24060\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/20170712143257_5796.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/20170712143257_5796-300x169.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Este cap\u00edtulo centra-se nas seis etapas do processo de inje\u00e7\u00e3o: fecho do molde, enchimento, manuten\u00e7\u00e3o da press\u00e3o, arrefecimento, abertura do molde e remo\u00e7\u00e3o do molde.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_0.jpg\" alt=\"\" class=\"wp-image-24111\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_0-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Fase de fixa\u00e7\u00e3o do molde <\/h2>\n<p>O sistema de fecho do molde deve ter ac\u00e7\u00f5es fi\u00e1veis de abertura e fecho do molde, e um efeito de amortecimento ao abrir e fechar o molde. A velocidade de funcionamento da placa m\u00f3vel deve ter um requisito de mudan\u00e7a de velocidade \"lento-r\u00e1pido-lento\" durante o fecho e a abertura do molde para evitar danos no molde e nos produtos, e evitar o ru\u00eddo causado pela forte vibra\u00e7\u00e3o da m\u00e1quina, de modo a conseguir um funcionamento seguro e prolongar a vida \u00fatil da m\u00e1quina e do molde.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-3 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/1571379774112491.jpg\" alt=\"\" class=\"wp-image-24061\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/1571379774112491.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/1571379774112491-300x300.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/1571379774112491-150x150.jpg 150w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/1571379774112491-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>O curso m\u00e1ximo de abertura e fecho do molde determina a espessura m\u00e1xima do molde que pode ser instalado na m\u00e1quina de moldagem por inje\u00e7\u00e3o e, por conseguinte, tamb\u00e9m determina a espessura m\u00e1xima dos produtos moldados por inje\u00e7\u00e3o que podem ser produzidos. Por conseguinte, o curso do molde deve ser ajust\u00e1vel.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-4 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runtRNGYp0Nntk_Electronic_components_-ar_85__f1d88e13-0097-4202-8408-5afee755f44c_3.jpg\" alt=\"\" class=\"wp-image-24064\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runtRNGYp0Nntk_Electronic_components_-ar_85__f1d88e13-0097-4202-8408-5afee755f44c_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runtRNGYp0Nntk_Electronic_components_-ar_85__f1d88e13-0097-4202-8408-5afee755f44c_3-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>O molde deve ter for\u00e7a e rigidez suficientes para garantir que n\u00e3o se deforme devido \u00e0s v\u00e1rias press\u00f5es frequentes durante a produ\u00e7\u00e3o de moldagem por inje\u00e7\u00e3o, afetando assim a precis\u00e3o dimensional e de forma dos produtos moldados por inje\u00e7\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-5 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_1.jpg\" alt=\"\" class=\"wp-image-24112\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_1-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-6 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\"><\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Condi\u00e7\u00f5es b\u00e1sicas para a fase de fecho do molde<\/h3>\n<p>For\u00e7a de fixa\u00e7\u00e3o suficiente e ajust\u00e1vel para garantir que o molde n\u00e3o ser\u00e1 ejectado sob a a\u00e7\u00e3o da press\u00e3o da cavidade do molde.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run29yXMkjX3SA_injection_molding_products_-a_3b87b73f-b795-4490-b62d-77e3f4bf6711_3.jpg\" alt=\"\" class=\"wp-image-23980\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run29yXMkjX3SA_injection_molding_products_-a_3b87b73f-b795-4490-b62d-77e3f4bf6711_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run29yXMkjX3SA_injection_molding_products_-a_3b87b73f-b795-4490-b62d-77e3f4bf6711_3-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>O modelo do molde fixo tem \u00e1rea, curso e dist\u00e2ncia de abertura suficientes, que podem adaptar-se aos moldes de moldagem de diferentes formas e tamanhos, e a dist\u00e2ncia de abertura pode ser ajustada livremente.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"574\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/1629187806140599-2.jpg\" alt=\"\" class=\"wp-image-24066\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/1629187806140599-2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/1629187806140599-2-300x287.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>A velocidade de movimento do modelo \u00e9 definida em dois n\u00edveis: velocidade r\u00e1pida e velocidade lenta. A velocidade r\u00e1pida requer suavidade, seguran\u00e7a e capacidade de controlo. A for\u00e7a motriz do sistema de fixa\u00e7\u00e3o prov\u00e9m da for\u00e7a mec\u00e2nica ou da for\u00e7a hidr\u00e1ulica ou de uma combina\u00e7\u00e3o hidr\u00e1ulico-mec\u00e2nica atrav\u00e9s de uma biela acionada hidraulicamente ou de um mecanismo de alavanca articulada.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-10 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runtRNGYp0Nntk_Electronic_components_-ar_85__f1d88e13-0097-4202-8408-5afee755f44c_1.jpg\" alt=\"\" class=\"wp-image-24067\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runtRNGYp0Nntk_Electronic_components_-ar_85__f1d88e13-0097-4202-8408-5afee755f44c_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runtRNGYp0Nntk_Electronic_components_-ar_85__f1d88e13-0097-4202-8408-5afee755f44c_1-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Para desmoldar e retirar as pe\u00e7as sem problemas, o sistema de fecho do molde \u00e9 concebido com um dispositivo de eje\u00e7\u00e3o do produto acionado por energia pneum\u00e1tica, hidr\u00e1ulica ou mec\u00e2nica.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-11 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"863\" height=\"430\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/R-C.png\" alt=\"\" class=\"wp-image-23972\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/R-C.png 863w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/R-C-300x149.png 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/R-C-768x383.png 768w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/R-C-600x299.png 600w\" sizes=\"(max-width: 863px) 100vw, 863px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Par\u00e2metros t\u00e9cnicos da fase de fecho do molde<\/h3>\n<p>Os par\u00e2metros t\u00e9cnicos do sistema de fixa\u00e7\u00e3o do molde incluem a for\u00e7a de fixa\u00e7\u00e3o, as dimens\u00f5es b\u00e1sicas do dispositivo de fixa\u00e7\u00e3o do molde, a velocidade de abertura e fecho do molde e o tempo de ciclo vazio. A for\u00e7a de fixa\u00e7\u00e3o \u00e9 particularmente importante. Refere-se \u00e0 for\u00e7a m\u00e1xima de fixa\u00e7\u00e3o que o mecanismo de fixa\u00e7\u00e3o do molde pode exercer sobre o molde. Ela deve ser maior do que a press\u00e3o m\u00e9dia da massa fundida na cavidade do molde.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-12 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"433\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/2019112103242334.jpg\" alt=\"\" class=\"wp-image-24068\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/2019112103242334.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/2019112103242334-300x217.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Quanto mais fina for a parede do produto, maior ser\u00e1 a press\u00e3o de inje\u00e7\u00e3o e maior ser\u00e1 a for\u00e7a de aperto necess\u00e1ria para fechar o molde durante a moldagem por inje\u00e7\u00e3o. Por exemplo, a press\u00e3o na cavidade do molde dos recipientes de embalagem normais \u00e9 geralmente de cerca de 25MPa, enquanto os recipientes de paredes finas podem necessitar de 30MPa. A for\u00e7a de aperto real definida \u00e9 determinada pelo produto da press\u00e3o de inje\u00e7\u00e3o e da \u00e1rea projectada do produto.&nbsp;<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-13 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runtRNGYp0Nntk_Electronic_components_-ar_85__f1d88e13-0097-4202-8408-5afee755f44c_0.jpg\" alt=\"\" class=\"wp-image-24069\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runtRNGYp0Nntk_Electronic_components_-ar_85__f1d88e13-0097-4202-8408-5afee755f44c_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runtRNGYp0Nntk_Electronic_components_-ar_85__f1d88e13-0097-4202-8408-5afee755f44c_0-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Fase de inje\u00e7\u00e3o<\/h2>\n<p>A inje\u00e7\u00e3o \u00e9 o primeiro passo no processo de fundi\u00e7\u00e3o normal. Quando o molde \u00e9 fechado e a fundi\u00e7\u00e3o come\u00e7a, a cavidade do molde pode ser diretamente injectada at\u00e9 95%. Em teoria, o tempo de inje\u00e7\u00e3o \u00e9 muito mais curto e a efici\u00eancia de moldagem \u00e9 muito maior. No entanto, na produ\u00e7\u00e3o real, existem muitas limita\u00e7\u00f5es condicionais no tempo de moldagem (ou velocidade de inje\u00e7\u00e3o).<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-14 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"450\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/20150626162901663-1.jpg\" alt=\"\" class=\"wp-image-24070\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/20150626162901663-1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/20150626162901663-1-300x225.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Inje\u00e7\u00e3o a alta velocidade: Se a taxa de cisalhamento for elevada durante a inje\u00e7\u00e3o a alta velocidade, o afinamento por cisalhamento reduz a viscosidade do pl\u00e1stico e reduz a resist\u00eancia global ao fluxo. Devido ao efeito do aquecimento viscoso local, a espessura da camada solidificada tamb\u00e9m diminui.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-15 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runt3aS_vszeWE_General_oil_and_gas_parts_-ar_2659ac75-65c8-43d2-9394-1032f8d796a6_3.jpg\" alt=\"\" class=\"wp-image-24071\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runt3aS_vszeWE_General_oil_and_gas_parts_-ar_2659ac75-65c8-43d2-9394-1032f8d796a6_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runt3aS_vszeWE_General_oil_and_gas_parts_-ar_2659ac75-65c8-43d2-9394-1032f8d796a6_3-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Por conseguinte, a opera\u00e7\u00e3o de inje\u00e7\u00e3o na fase de controlo do fluxo depende geralmente da dimens\u00e3o do volume a ser injetado. Por outras palavras, na fase de controlo do caudal, o efeito de dilui\u00e7\u00e3o do metal fundido \u00e9 frequentemente grande devido \u00e0 inje\u00e7\u00e3o a alta velocidade, mas o efeito de arrefecimento devido \u00e0s paredes finas n\u00e3o \u00e9 \u00f3bvio, pelo que o efeito de velocidade tem prioridade.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-16 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"451\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/201867926362469256.jpg\" alt=\"\" class=\"wp-image-24072\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/201867926362469256.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/201867926362469256-300x226.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Inje\u00e7\u00e3o lenta. Quando a inje\u00e7\u00e3o \u00e9 controlada por uma condu\u00e7\u00e3o de calor lenta, a taxa de cisalhamento \u00e9 baixa, a viscosidade local \u00e9 elevada e a resist\u00eancia ao fluxo \u00e9 grande. Por conseguinte, o efeito de condu\u00e7\u00e3o de calor \u00e9 mais pronunciado e o calor \u00e9 rapidamente libertado atrav\u00e9s da parede fria do molde. Quando combinado com uma menor quantidade de aquecimento viscoso, a espessura da camada solidificada aumenta ainda mais, aumentando ainda mais a resist\u00eancia ao fluxo em sec\u00e7\u00f5es de paredes finas.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-17 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runpsNZn7smhAs_injection_molding_products_-a_1a77f120-dfce-4596-b340-43b810204476_2.jpg\" alt=\"\" class=\"wp-image-23983\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runpsNZn7smhAs_injection_molding_products_-a_1a77f120-dfce-4596-b340-43b810204476_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runpsNZn7smhAs_injection_molding_products_-a_1a77f120-dfce-4596-b340-43b810204476_2-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>O fluxo da fonte alinha as cadeias de pol\u00edmeros pl\u00e1sticos na frente da onda de fluxo aproximadamente paralelas \u00e0 frente da onda de fluxo. Al\u00e9m disso, as duas pe\u00e7as fundidas t\u00eam propriedades diferentes (tempos de perman\u00eancia diferentes na cavidade do molde, temperatura de fus\u00e3o, temperaturas e press\u00f5es de fus\u00e3o diferentes), o que leva a uma menor resist\u00eancia estrutural microsc\u00f3pica da regi\u00e3o de intersec\u00e7\u00e3o da pe\u00e7a fundida.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-18 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runt3aS_vszeWE_General_oil_and_gas_parts_-ar_2659ac75-65c8-43d2-9394-1032f8d796a6_2.jpg\" alt=\"\" class=\"wp-image-24073\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runt3aS_vszeWE_General_oil_and_gas_parts_-ar_2659ac75-65c8-43d2-9394-1032f8d796a6_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runt3aS_vszeWE_General_oil_and_gas_parts_-ar_2659ac75-65c8-43d2-9394-1032f8d796a6_2-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Colocar a pe\u00e7a sob uma luz num \u00e2ngulo adequado e observar visualmente se existem costuras evidentes. Este \u00e9 o mecanismo pelo qual as marcas de soldadura s\u00e3o criadas. As marcas de soldadura n\u00e3o s\u00f3 afectam o aspeto das pe\u00e7as de pl\u00e1stico, como a microestrutura solta tende a criar concentra\u00e7\u00f5es de tens\u00e3o que podem reduzir a resist\u00eancia da pe\u00e7a e causar falhas.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-21 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-20 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-19 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_2.jpg\" alt=\"\" class=\"wp-image-24113\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_2-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>Geralmente, as linhas de soldadura s\u00e3o mais fortes se ocorrerem em \u00e1reas de alta temperatura. Isto deve-se ao facto de, a altas temperaturas, a mobilidade das cadeias de pol\u00edmero ser relativamente boa e estas poderem penetrar umas nas outras e ficarem emaranhadas. Al\u00e9m disso, as temperaturas dos dois fundidos na zona quente s\u00e3o relativamente pr\u00f3ximas e as propriedades t\u00e9rmicas dos fundidos s\u00e3o quase as mesmas, o que aumenta a resist\u00eancia da zona de soldadura. Por outro lado, a resist\u00eancia da soldadura diminui em intervalos de temperatura baixos.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-22 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runt3aS_vszeWE_General_oil_and_gas_parts_-ar_2659ac75-65c8-43d2-9394-1032f8d796a6_1.jpg\" alt=\"\" class=\"wp-image-24075\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runt3aS_vszeWE_General_oil_and_gas_parts_-ar_2659ac75-65c8-43d2-9394-1032f8d796a6_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runt3aS_vszeWE_General_oil_and_gas_parts_-ar_2659ac75-65c8-43d2-9394-1032f8d796a6_1-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Fase de espera<\/h2>\n<p>A fun\u00e7\u00e3o do est\u00e1gio de reten\u00e7\u00e3o de press\u00e3o \u00e9 aplicar press\u00e3o continuamente, comprimir a massa fundida, aumentar a densidade do pl\u00e1stico (densifica\u00e7\u00e3o) e compensar o comportamento de encolhimento do pl\u00e1stico. Durante o processo de embalagem, a cavidade do molde \u00e9 preenchida com pl\u00e1stico, criando uma elevada contrapress\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-24 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-23 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_3.jpg\" alt=\"\" class=\"wp-image-24114\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run5X0vcLlHWQ8_Injection_molded_parts_-ar_85_66410718-05db-4e84-87c7-10144805392f_3-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>No processo de manuten\u00e7\u00e3o de press\u00e3o e compress\u00e3o, o parafuso da m\u00e1quina de moldagem por inje\u00e7\u00e3o s\u00f3 pode avan\u00e7ar lentamente e suavemente, e a taxa de fluxo do pl\u00e1stico fundido tamb\u00e9m \u00e9 relativamente lenta. O fluxo neste momento \u00e9 chamado de fluxo de manuten\u00e7\u00e3o de press\u00e3o. Durante a fase de manuten\u00e7\u00e3o de press\u00e3o, a parede do molde de pl\u00e1stico arrefece e solidifica mais rapidamente, e o material fundido aumenta rapidamente, pelo que a resist\u00eancia dentro da cavidade do molde torna-se muito grande.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-26 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-25 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"398\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/v2-d4be586b309647382b9bf4fd001d1a50_1440w-1.jpg\" alt=\"\" class=\"wp-image-24110\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/v2-d4be586b309647382b9bf4fd001d1a50_1440w-1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/v2-d4be586b309647382b9bf4fd001d1a50_1440w-1-300x199.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>Nas fases finais da embalagem, a densidade do material fundido continua a aumentar e as pe\u00e7as de pl\u00e1stico s\u00e3o gradualmente formadas. A fase de manuten\u00e7\u00e3o da press\u00e3o continua at\u00e9 a porta solidificar e selar. Nesta altura, a press\u00e3o na cavidade do molde atinge o seu valor m\u00e1ximo durante a fase de condicionamento.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-27 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_0.jpg\" alt=\"\" class=\"wp-image-24115\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_0-300x300.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_0-150x150.jpg 150w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_0-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>Durante a fase de reten\u00e7\u00e3o, a press\u00e3o \u00e9 t\u00e3o elevada que o pl\u00e1stico apresenta propriedades parcialmente compress\u00edveis. Nas \u00e1reas de alta press\u00e3o, o pl\u00e1stico torna-se cada vez mais denso. Nas zonas de menor press\u00e3o, o pl\u00e1stico torna-se mais solto e menos denso, e a distribui\u00e7\u00e3o da densidade muda consoante o local e o tempo.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-30 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-29 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_1.jpg\" alt=\"\" class=\"wp-image-24116\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_1-300x300.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_1-150x150.jpg 150w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runD3vJrVxr8_Y_Injection_molding_barrels_of_v_461e16c0-e872-45b3-86fd-a93e54fb407b_1-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>Durante o processo de reten\u00e7\u00e3o de press\u00e3o, o fluxo de pl\u00e1stico \u00e9 muito baixo. Como resultado, o fluxo de material \u00e9 fraco e n\u00e3o pode desempenhar um papel de condu\u00e7\u00e3o. A press\u00e3o \u00e9 o principal fator que afecta o processo de manuten\u00e7\u00e3o da press\u00e3o. Durante o processo de manuten\u00e7\u00e3o da press\u00e3o, o pl\u00e1stico preenche a cavidade do molde, e a fus\u00e3o que se solidifica gradualmente actua como um meio de transmiss\u00e3o de press\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-32 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-31 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_2.jpg\" alt=\"\" class=\"wp-image-24129\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_2-300x300.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_2-150x150.jpg 150w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_2-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\u00c9 necess\u00e1ria uma for\u00e7a de aperto adequada ao fechar o molde, uma vez que a press\u00e3o no interior da cavidade do molde \u00e9 transmitida atrav\u00e9s do pl\u00e1stico para as paredes do molde, o que tende a provocar a abertura do molde. No entanto, se a for\u00e7a de expans\u00e3o do molde for demasiado grande, podem ocorrer rebarbas e transbordos e o molde pode abrir-se.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-34 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-33 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.rundfqxHmUo3fs_Injection_molding_of_daily_nec_58f7954c-ccca-4b9d-a4a6-7cedf2d106c0_1.jpg\" alt=\"\" class=\"wp-image-24118\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.rundfqxHmUo3fs_Injection_molding_of_daily_nec_58f7954c-ccca-4b9d-a4a6-7cedf2d106c0_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.rundfqxHmUo3fs_Injection_molding_of_daily_nec_58f7954c-ccca-4b9d-a4a6-7cedf2d106c0_1-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>Por conseguinte, ao escolher uma m\u00e1quina de moldagem por inje\u00e7\u00e3o, deve escolher uma m\u00e1quina de moldagem por inje\u00e7\u00e3o com for\u00e7a de aperto suficiente para evitar a expans\u00e3o do molde e manter eficazmente a press\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-36 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-35 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.rundfqxHmUo3fs_Injection_molding_of_daily_nec_58f7954c-ccca-4b9d-a4a6-7cedf2d106c0_2.jpg\" alt=\"\" class=\"wp-image-24119\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.rundfqxHmUo3fs_Injection_molding_of_daily_nec_58f7954c-ccca-4b9d-a4a6-7cedf2d106c0_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.rundfqxHmUo3fs_Injection_molding_of_daily_nec_58f7954c-ccca-4b9d-a4a6-7cedf2d106c0_2-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>As novas condi\u00e7\u00f5es ambientais para a moldagem por inje\u00e7\u00e3o exigem a considera\u00e7\u00e3o de v\u00e1rios novos processos de moldagem por inje\u00e7\u00e3o, incluindo a moldagem assistida por g\u00e1s, a moldagem assistida por \u00e1gua e a moldagem por inje\u00e7\u00e3o de espuma.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-37 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"338\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/yvecuc0lycj.jpg\" alt=\"\" class=\"wp-image-24020\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/yvecuc0lycj.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/yvecuc0lycj-300x169.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Fase de arrefecimento<\/h2>\n<p>Nos moldes de inje\u00e7\u00e3o, a conce\u00e7\u00e3o do sistema de arrefecimento \u00e9 muito importante. De facto, s\u00f3 depois de arrefecer e solidificar um produto moldado em pl\u00e1stico at\u00e9 um certo grau de rigidez \u00e9 que pode evitar a deforma\u00e7\u00e3o devido a for\u00e7as externas ap\u00f3s a desmoldagem.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-39 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-38 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_0.jpg\" alt=\"\" class=\"wp-image-24120\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_0-300x300.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_0-150x150.jpg 150w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_0-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>O tempo de arrefecimento \u00e9 respons\u00e1vel por cerca de 70-80% de todo o ciclo de moldagem. Por conseguinte, um sistema de arrefecimento corretamente concebido pode reduzir significativamente o tempo de moldagem, melhorar <a href=\"https:\/\/zetarmold.com\/pt\/\">moldagem por inje\u00e7\u00e3o<\/a> Um sistema de arrefecimento mal concebido pode prolongar o tempo de moldagem e aumentar os custos. Um sistema de arrefecimento mal concebido pode prolongar o tempo de moldagem e aumentar os custos. O arrefecimento irregular far\u00e1 com que os produtos de pl\u00e1stico se deformem mais e se tornem maiores.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-41 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-40 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_1.jpg\" alt=\"\" class=\"wp-image-24121\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_1-300x300.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_1-150x150.jpg 150w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runf6d3biE7_Lk_Injection_molded_daily_necessi_507eec08-2f14-4278-9f38-f779fc17755c_1-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>As experi\u00eancias mostraram que o calor que entra no molde a partir do ferro fundido \u00e9 normalmente perdido em duas partes, 5% dos quais s\u00e3o transferidos para a atmosfera por radia\u00e7\u00e3o e convec\u00e7\u00e3o, e os restantes 95% s\u00e3o transportados do ferro fundido para o molde. Aquecer o molde at\u00e9 \u00e0 temperatura do molde.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-43 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-42 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runFrnspe2VQI0_Injection_molding_medical_rela_e9d70f71-a8ec-407b-8f82-2f7594fada9b_0.jpg\" alt=\"\" class=\"wp-image-24122\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runFrnspe2VQI0_Injection_molding_medical_rela_e9d70f71-a8ec-407b-8f82-2f7594fada9b_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runFrnspe2VQI0_Injection_molding_medical_rela_e9d70f71-a8ec-407b-8f82-2f7594fada9b_0-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>Devido ao papel do tubo de \u00e1gua de arrefecimento do produto pl\u00e1stico no molde, o calor \u00e9 transferido do pl\u00e1stico na cavidade do molde para o tubo de \u00e1gua de arrefecimento por condu\u00e7\u00e3o de calor atrav\u00e9s da estrutura do molde e \u00e9 descarregado atrav\u00e9s do l\u00edquido de arrefecimento por convec\u00e7\u00e3o t\u00e9rmica. A pequena quantidade de calor que n\u00e3o \u00e9 removida pela \u00e1gua de arrefecimento continua a ser transferida para o molde e \u00e9 dissipada no ar ap\u00f3s o contacto com o mundo exterior.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-45 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-44 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runFrnspe2VQI0_Injection_molding_medical_rela_e9d70f71-a8ec-407b-8f82-2f7594fada9b_1.jpg\" alt=\"\" class=\"wp-image-24123\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runFrnspe2VQI0_Injection_molding_medical_rela_e9d70f71-a8ec-407b-8f82-2f7594fada9b_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runFrnspe2VQI0_Injection_molding_medical_rela_e9d70f71-a8ec-407b-8f82-2f7594fada9b_1-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>O ciclo de moldagem por inje\u00e7\u00e3o inclui o tempo de fecho do molde, o tempo de enchimento, o tempo de reten\u00e7\u00e3o, o tempo de arrefecimento e o tempo de desmoldagem.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-46 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runFrnspe2VQI0_Injection_molding_medical_rela_e9d70f71-a8ec-407b-8f82-2f7594fada9b_3.jpg\" alt=\"\" class=\"wp-image-24124\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runFrnspe2VQI0_Injection_molding_medical_rela_e9d70f71-a8ec-407b-8f82-2f7594fada9b_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runFrnspe2VQI0_Injection_molding_medical_rela_e9d70f71-a8ec-407b-8f82-2f7594fada9b_3-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>O tempo de arrefecimento \u00e9 a maior parte deste fator, cerca de 70-80%. Por conseguinte, o tempo de arrefecimento afecta diretamente o ciclo de moldagem e o rendimento dos produtos de pl\u00e1stico.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-47 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runPAFbbl97dcA_Plastic_buckets_and_basins_hou_5f8dca77-c5b0-42d2-b5b5-8236eef321d0_3.jpg\" alt=\"\" class=\"wp-image-24091\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runPAFbbl97dcA_Plastic_buckets_and_basins_hou_5f8dca77-c5b0-42d2-b5b5-8236eef321d0_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runPAFbbl97dcA_Plastic_buckets_and_basins_hou_5f8dca77-c5b0-42d2-b5b5-8236eef321d0_3-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>No processo de liberta\u00e7\u00e3o do molde, a temperatura do produto pl\u00e1stico deve ser arrefecida a uma temperatura inferior \u00e0 temperatura de distor\u00e7\u00e3o t\u00e9rmica do produto pl\u00e1stico, a fim de evitar que o produto pl\u00e1stico se deforme devido ao relaxamento das tens\u00f5es residuais ou \u00e0 deforma\u00e7\u00e3o devida a for\u00e7as externas durante a liberta\u00e7\u00e3o do molde.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-48 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar6756_httpss.mj_.runYrfK52EapcA_injection_molding_products_2377a56a-1b2d-4b3c-89c7-6ce5ba7954cd_3.jpg\" alt=\"\" class=\"wp-image-23993\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar6756_httpss.mj_.runYrfK52EapcA_injection_molding_products_2377a56a-1b2d-4b3c-89c7-6ce5ba7954cd_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar6756_httpss.mj_.runYrfK52EapcA_injection_molding_products_2377a56a-1b2d-4b3c-89c7-6ce5ba7954cd_3-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Fase de abertura do molde<\/h2>\n<p>O processo de abertura de um molde de inje\u00e7\u00e3o divide-se geralmente na elabora\u00e7\u00e3o dos desenhos do molde, na revis\u00e3o e revis\u00e3o dos desenhos, no ensaio e repara\u00e7\u00e3o do molde e na organiza\u00e7\u00e3o e arquivo dos dados.&nbsp;<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-49 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"546\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/injection-mould-1.jpg\" alt=\"\" class=\"wp-image-24093\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/injection-mould-1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/injection-mould-1-300x273.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Desenhar desenhos do molde: Antes de desenhar o desenho de montagem final do molde de inje\u00e7\u00e3o, deve ser desenhado um desenho de processo que deve cumprir os requisitos do desenho da pe\u00e7a e dos dados do processo. As dimens\u00f5es garantidas pelo processo seguinte devem ser marcadas com as palavras \"dimens\u00f5es do processo\" no desenho. Se n\u00e3o for efectuado qualquer outro processamento mec\u00e2nico ap\u00f3s a moldagem, exceto a repara\u00e7\u00e3o de rebarbas, ent\u00e3o o desenho do processo ser\u00e1 exatamente igual ao desenho da pe\u00e7a.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-50 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/unnamed.jpg\" alt=\"\" class=\"wp-image-24094\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/unnamed.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/unnamed-300x300.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/unnamed-150x150.jpg 150w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/unnamed-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Revis\u00e3o de provas e de desenhos: Se o material pl\u00e1stico, a dureza, a precis\u00e3o dimensional, a estrutura, etc. do molde de inje\u00e7\u00e3o e das pe\u00e7as do molde cumprem os requisitos dos desenhos das pe\u00e7as de pl\u00e1stico.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-52 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-51 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_3.jpg\" alt=\"\" class=\"wp-image-24125\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_3-300x300.jpg 300w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_3-150x150.jpg 150w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runMudJFhi2_zE_Injection_molding_medical_rela_dfec81d0-71d2-4eeb-a626-cf85febef0e6_3-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>Ensaio do molde e repara\u00e7\u00e3o do molde: O projeto do molde \u00e9 realizado nas condi\u00e7\u00f5es de processo esperadas ao selecionar os materiais de moldagem e o equipamento de moldagem, mas a compreens\u00e3o das pessoas \u00e9 muitas vezes incompleta; o ensaio do molde deve ser realizado ap\u00f3s a conclus\u00e3o do processamento do molde de inje\u00e7\u00e3o. Testar e confirmar a qualidade das pe\u00e7as fundidas. Uma vez descoberto, iremos reparar o molde para eliminar o erro.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-53 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run3fzdblEO1uM_Plastic_y_medical_supplies_-a_f2a78c20-f9bc-4dd4-99a2-cb415228775e_0.jpg\" alt=\"\" class=\"wp-image-24096\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run3fzdblEO1uM_Plastic_y_medical_supplies_-a_f2a78c20-f9bc-4dd4-99a2-cb415228775e_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run3fzdblEO1uM_Plastic_y_medical_supplies_-a_f2a78c20-f9bc-4dd4-99a2-cb415228775e_0-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Organizar e arquivar os dados: Depois de o molde de inje\u00e7\u00e3o ser testado, se n\u00e3o for utilizado temporariamente, os res\u00edduos de desmoldagem, o p\u00f3, o \u00f3leo, etc. devem ser completamente limpos, revestidos com manteiga ou outro \u00f3leo antiferrugem ou agente antiferrugem e guardados num local de armazenamento.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-54 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run3fzdblEO1uM_Plastic_y_medical_supplies_-a_f2a78c20-f9bc-4dd4-99a2-cb415228775e_1.jpg\" alt=\"\" class=\"wp-image-24097\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run3fzdblEO1uM_Plastic_y_medical_supplies_-a_f2a78c20-f9bc-4dd4-99a2-cb415228775e_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.run3fzdblEO1uM_Plastic_y_medical_supplies_-a_f2a78c20-f9bc-4dd4-99a2-cb415228775e_1-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>O princ\u00edpio b\u00e1sico da moldagem por inje\u00e7\u00e3o: A m\u00e1quina de moldagem por inje\u00e7\u00e3o tira partido do facto de o pl\u00e1stico poder fundir-se num l\u00edquido quando aquecido a uma determinada temperatura. O l\u00edquido fundido \u00e9 injetado numa cavidade fechada do molde com alta press\u00e3o. Depois de arrefecido e moldado, o molde \u00e9 aberto e ejectado para se obter o pl\u00e1stico pretendido. produtos para o corpo.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-55 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_3.jpg\" alt=\"\" class=\"wp-image-24098\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_3-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Fase de desmoldagem<\/h2>\n<p>A desmoldagem \u00e9 a \u00faltima etapa do ciclo de moldagem por inje\u00e7\u00e3o. Embora o produto tenha sido moldado a frio, a desmoldagem continua a ter um enorme impacto na qualidade do produto. A utiliza\u00e7\u00e3o de um m\u00e9todo de desmoldagem inadequado pode resultar em defeitos, tais como for\u00e7a desigual aplicada ao produto durante a desmoldagem ou deforma\u00e7\u00e3o do produto durante a eje\u00e7\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-56 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_2.jpg\" alt=\"\" class=\"wp-image-24099\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_2-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Existem dois m\u00e9todos de corte principais. A desmoldagem do ejetor e da placa de desmoldagem. Ao conceber um molde, \u00e9 necess\u00e1rio selecionar um m\u00e9todo de desmoldagem adequado de acordo com as carater\u00edsticas estruturais do produto para garantir a qualidade do mesmo.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-57 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_1.jpg\" alt=\"\" class=\"wp-image-24100\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_1-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Para moldes que utilizam ejectores para a liberta\u00e7\u00e3o do molde, coloque os ejectores t\u00e3o uniformemente quanto poss\u00edvel e escolha locais que proporcionem a m\u00e1xima resist\u00eancia \u00e0 liberta\u00e7\u00e3o do molde e a m\u00e1xima resist\u00eancia e rigidez da pe\u00e7a de pl\u00e1stico para evitar distor\u00e7\u00f5es ou danos. pe\u00e7a de pl\u00e1stico.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-58 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_0.jpg\" alt=\"\" class=\"wp-image-24102\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_0-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>As placas de liberta\u00e7\u00e3o s\u00e3o habitualmente utilizadas para libertar recipientes de paredes finas com cavidades profundas ou produtos transparentes em que n\u00e3o s\u00e3o toleradas marcas de varetas. Este mecanismo \u00e9 caracterizado por uma for\u00e7a de liberta\u00e7\u00e3o grande e uniforme, um funcionamento suave e sem vest\u00edgios.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-59 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runjPK1Yt6aBHs_Fuel_system_and_electronic_pro_8455debb-02bc-4946-9e23-4b4dd44fc228_3.jpg\" alt=\"\" class=\"wp-image-24103\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runjPK1Yt6aBHs_Fuel_system_and_electronic_pro_8455debb-02bc-4946-9e23-4b4dd44fc228_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runjPK1Yt6aBHs_Fuel_system_and_electronic_pro_8455debb-02bc-4946-9e23-4b4dd44fc228_3-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Conclus\u00e3o<\/h2>\n<p>Por outras palavras, o <a href=\"https:\/\/zetarmold.com\/pt\/\">moldagem por inje\u00e7\u00e3o<\/a> O processo de moldagem por inje\u00e7\u00e3o inclui principalmente seis passos: fecho do molde - inje\u00e7\u00e3o - manuten\u00e7\u00e3o da press\u00e3o - arrefecimento - abertura do molde - desmoldagem. Estes seis passos determinam diretamente a qualidade de moldagem do produto e constituem um processo completamente cont\u00ednuo que contribuiu para a forma\u00e7\u00e3o do mundo moderno. A moldagem por inje\u00e7\u00e3o \u00e9 um marco da inova\u00e7\u00e3o, impulsionando os avan\u00e7os na produ\u00e7\u00e3o e abrindo infinitas possibilidades.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-62 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-61 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-60 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_2-1.jpg\" alt=\"\" class=\"wp-image-24127\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_2-1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runoNeYG3CTVxc_Injection_molding_of_various_s_668984b8-1982-4607-b18e-6c3bbb2777f5_2-1-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>A moldagem por inje\u00e7\u00e3o de pl\u00e1stico incorpora a efici\u00eancia e a precis\u00e3o do fabrico de pe\u00e7as de pl\u00e1stico. Desde a conce\u00e7\u00e3o do molde at\u00e9 \u00e0 eje\u00e7\u00e3o, cada passo \u00e9 cuidadosamente executado para produzir pe\u00e7as de alta qualidade \u00e0 escala. A sua versatilidade e o avan\u00e7o cont\u00ednuo em todas as ind\u00fastrias garantem a sua relev\u00e2ncia e contribui\u00e7\u00e3o cont\u00ednuas para moldar o mundo moderno. A moldagem por inje\u00e7\u00e3o \u00e9 um testemunho da inova\u00e7\u00e3o, impulsionando o progresso e desbloqueando possibilidades infinitas no fabrico.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-64 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-63 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runKVIm9GRIzCM_Injection_molding_of_various_s_15eca6c6-f46b-457e-883f-44c329462c3d_0.jpg\" alt=\"\" class=\"wp-image-24128\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runKVIm9GRIzCM_Injection_molding_of_various_s_15eca6c6-f46b-457e-883f-44c329462c3d_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/03\/zetar_httpss.mj_.runKVIm9GRIzCM_Injection_molding_of_various_s_15eca6c6-f46b-457e-883f-44c329462c3d_0-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"background:#f0f4f8;padding:20px;border-radius:8px;margin-top:30px;\">\n<p style=\"margin:0 0 10px;font-size:18px;\"><strong>Need a Quote for Your Injection Molding Project?<\/strong><\/p>\n<p style=\"margin:0 0 10px;\">Get competitive pricing, DFM feedback, and production timeline from ZetarMold\u2019s engineering team.<\/p>\n<p style=\"margin:0;\"><a href=\"https:\/\/zetarmold.com\/pt\/contactar-nos\/\" style=\"background:#2563eb;color:white;padding:12px 24px;border-radius:6px;text-decoration:none;font-weight:bold;\">Request a Free Quote \u2192<\/a> See our <a href=\"https:\/\/zetarmold.com\/pt\/injection-molding-complete-guide\/\">Injection Molding Complete Guide<\/a> for a comprehensive overview.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Pref\u00e1cio A moldagem por inje\u00e7\u00e3o, tamb\u00e9m conhecida como moldagem por inje\u00e7\u00e3o de pl\u00e1stico, \u00e9 um m\u00e9todo comum de fabrico de produtos de pl\u00e1stico. Sendo uma tecnologia de processamento de pl\u00e1stico madura, os materiais de moldagem por inje\u00e7\u00e3o, a moldagem por inje\u00e7\u00e3o tem amplas perspectivas de desenvolvimento. Com o surgimento de novas tecnologias, novos materiais e novas exig\u00eancias, a moldagem por inje\u00e7\u00e3o continuar\u00e1 a adaptar-se \u00e0s mudan\u00e7as do mercado e aos desenvolvimentos inovadores, [...]<\/p>","protected":false},"author":1,"featured_media":24091,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"The Flow of the Injection Molding Process? | ZetarMold","_seopress_titles_desc":"Discover expert insights on injection molding pocess from ZetarMold. We provide professional injection molding services with DFM support, fast prototyping, and","_seopress_robots_index":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[42],"tags":[135],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/posts\/24057"}],"collection":[{"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/comments?post=24057"}],"version-history":[{"count":0,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/posts\/24057\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/media\/24091"}],"wp:attachment":[{"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/media?parent=24057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/categories?post=24057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/tags?post=24057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}