{"id":6086,"date":"2020-10-27T09:26:25","date_gmt":"2020-10-27T09:26:25","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6086"},"modified":"2020-10-27T09:26:25","modified_gmt":"2020-10-27T09:26:25","slug":"purification-of-molten-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/purification-of-molten-aluminum\/","title":{"rendered":"Purifica\u00e7\u00e3o do alum\u00ednio fundido"},"content":{"rendered":"<p>As pe\u00e7as fundidas de liga de alum\u00ednio no setor aeroespacial exigem altos padr\u00f5es de qualidade. A maioria das empresas ainda utiliza o modo de opera\u00e7\u00e3o de desgaseifica\u00e7\u00e3o rotativa com g\u00e1s inerte e filtragem para a purifica\u00e7\u00e3o do alum\u00ednio fundido.<\/p>\n<p>As pequenas empresas de fundi\u00e7\u00e3o sob press\u00e3o de liga de alum\u00ednio, devido aos baixos requisitos de fundi\u00e7\u00e3o e \u00e0 tecnologia obsoleta dos equipamentos, utilizam basicamente fornos de fus\u00e3o instalados junto \u00e0s m\u00e1quinas e realizam um tratamento simples de remo\u00e7\u00e3o de esc\u00f3ria para produzir pe\u00e7as fundidas. \u00c9 mais comum utilizar g\u00e1s inerte ou um agente de refino n\u00e3o t\u00f3xico para realizar um tratamento de refino simples ou filtrar o alum\u00ednio l\u00edquido com uma placa filtrante, iniciando a produ\u00e7\u00e3o sem testar o efeito do tratamento no alum\u00ednio l\u00edquido. Esse tipo de tratamento resulta em alum\u00ednio fundido de baixa qualidade, baixo n\u00edvel de produ\u00e7\u00e3o, custo relativamente alto e dificulta o desenvolvimento da empresa.<\/p>\n<p>Algumas empresas de grande e m\u00e9dio porte especializadas em fundi\u00e7\u00e3o sob press\u00e3o de ligas de alum\u00ednio utilizam, em sua maioria, a fus\u00e3o centralizada, a remo\u00e7\u00e3o de esc\u00f3ria no forno e a organiza\u00e7\u00e3o da produ\u00e7\u00e3o ap\u00f3s a desgaseifica\u00e7\u00e3o e a remo\u00e7\u00e3o de esc\u00f3ria. O alum\u00ednio fundido passa por um processo de desgaseifica\u00e7\u00e3o em linha com g\u00e1s inerte e por filtragem com cer\u00e2mica espumosa para a produ\u00e7\u00e3o de pe\u00e7as fundidas.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6087\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/10\/Purification-of-Molten-Aluminum-1.jpg\" alt=\"Purifica\u00e7\u00e3o do alum\u00ednio fundido\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/10\/Purification-of-Molten-Aluminum-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/10\/Purification-of-Molten-Aluminum-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Tecnologia avan\u00e7ada de tratamento de purifica\u00e7\u00e3o de alum\u00ednio l\u00edquido: equipamentos de tratamento de desgaseifica\u00e7\u00e3o em linha; o tratamento de purifica\u00e7\u00e3o seleciona <a href=\"http:\/\/www.alalloycasting.com\/pt\/rotating-degassing-aluminum\/\">desgaseifica\u00e7\u00e3o rotativa com nitrog\u00eanio<\/a> e <a href=\"http:\/\/www.alalloycasting.com\/pt\/ceramic-foam-filter-pal\/\">filtro de espuma cer\u00e2mica<\/a> filtra\u00e7\u00e3o por placas, e o alum\u00ednio l\u00edquido tratado apresenta uma densidade equivalente inferior a 1. Equipamentos de processamento avan\u00e7ados como esse s\u00e3o mais utilizados em novas empresas de produ\u00e7\u00e3o em grande escala. As empresas que optam pela fundi\u00e7\u00e3o por gravidade de metais e produzem em massa pe\u00e7as fundidas para autom\u00f3veis e motocicletas utilizam, basicamente, alum\u00ednio proveniente de fornos de fus\u00e3o cont\u00ednua, desgaseifica\u00e7\u00e3o online com g\u00e1s inerte e filtra\u00e7\u00e3o por placas de cer\u00e2mica para processar o alum\u00ednio fundido. A qualidade do alum\u00ednio fundido processado por esses m\u00e9todos pode ser garantida, a efici\u00eancia \u00e9 alta e o custo de produ\u00e7\u00e3o \u00e9 relativamente baixo; \u00e9 ideal para a produ\u00e7\u00e3o em massa.<\/p>\n<p>No meu pa\u00eds, cada vez mais pe\u00e7as fundidas de liga de alum\u00ednio de alta qualidade v\u00eam sendo produzidas, e os requisitos para o alum\u00ednio fundido est\u00e3o em constante aprimoramento. \u00c9 fundamental aprimorar os equipamentos e a tecnologia de purifica\u00e7\u00e3o do alum\u00ednio fundido.<\/p>","protected":false},"excerpt":{"rendered":"<p>The cast aluminum alloy castings in the aerospace field require high requirements. Most companies still use inert gas rotating degassing and filtering operation mode for&hellip;<\/p>","protected":false},"author":1,"featured_media":6087,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6086","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Purification of Molten Aluminum by Rotating Degassing and Filtering<\/title>\n<meta name=\"description\" content=\"Most companies still use inert gas rotating degassing and filtering operation mode for the purification of molten aluminum.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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