{"id":9515,"date":"2021-07-10T06:19:46","date_gmt":"2021-07-10T06:19:46","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9515"},"modified":"2021-07-09T06:23:21","modified_gmt":"2021-07-09T06:23:21","slug":"aluminum-melt-purification-method","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-melt-purification-method\/","title":{"rendered":"M\u00e9todo de purifica\u00e7\u00e3o de alum\u00ednio fundido"},"content":{"rendered":"

O m\u00e9todo de purifica\u00e7\u00e3o do alum\u00ednio fundido adota o m\u00e9todo de flota\u00e7\u00e3o por bolhas para tr\u00eas etapas de refino, injetando N\u2082 + agente de refino de alta temperatura na massa fundida; j\u00e1 a purifica\u00e7\u00e3o em linha fora do forno utiliza CCl\u2084 + N\u2082, pulverizados por meio de um rotor de grafite em rota\u00e7\u00e3o, e a esc\u00f3ria \u00e9 removida oportunamente para garantir a qualidade da massa fundida. Ap\u00f3s uma s\u00e9rie de m\u00e9todo de purifica\u00e7\u00e3o do alum\u00ednio<\/a> com esses tratamentos, o teor de hidrog\u00eanio na massa fundida pode ser controlado dentro de uma margem de 0,12 ml\/100 g de Al.<\/p>\n

A AdTech \u00e9 uma empresa voltada para a internacionaliza\u00e7\u00e3o que atua como pioneira constante no setor, concentrando-se em pesquisa e desenvolvimento (P&D) e na fabrica\u00e7\u00e3o de equipamentos de desgaseifica\u00e7\u00e3o e filtragem online, filtros de espuma cer\u00e2mica, materiais para fundi\u00e7\u00e3o com topo quente, placas de bicos, materiais de revestimento para reparos e fluxos. Nossa unidade de desgaseifica\u00e7\u00e3o em linha adota tecnologia japonesa, com um projeto de estrutura otimizada. A efici\u00eancia de limpeza de hidrog\u00eanio \u00e9 est\u00e1vel no 60% e chega a 80%.<\/p>\n

O teor de hidrog\u00eanio na massa fundida de alum\u00ednio da chapa fundida e laminada \u00e9 geralmente especificado para n\u00e3o exceder 0,15 ml\/100 g. Devido a fatores como mat\u00e9rias-primas, umidade ou ferramentas n\u00e3o pr\u00e9-aquecidas, uma quantidade excessiva de g\u00e1s permanece na solu\u00e7\u00e3o do alum\u00ednio fundido, causando defeitos como microporos, bolhas de ar e canais de ar na chapa fundida e laminada.<\/p>\n

As principais raz\u00f5es para o teor excessivo de hidrog\u00eanio s\u00e3o:<\/p>\n

(1) H\u00e1 umidade na superf\u00edcie do material frio que \u00e9 devolvido ao forno;
\n(2) A temperatura de fus\u00e3o \u00e9 muito alta, e o alum\u00ednio fundido absorve facilmente a umidade do ar;
\n(3) Umidade gerada durante o aquecimento com g\u00e1s de petr\u00f3leo liquefeito;
\n(4) O nitrog\u00eanio introduzido na caixa de desgaseifica\u00e7\u00e3o cont\u00e9m umidade.<\/p>\n

Por esses motivos, durante a opera\u00e7\u00e3o, deve-se prestar aten\u00e7\u00e3o ao controle da temperatura do alum\u00ednio fundido, realizar um bom trabalho de desgaseifica\u00e7\u00e3o do alum\u00ednio fundido e, na medida do poss\u00edvel, evitar o uso de aquecimento a g\u00e1s liquefeito. Ao mesmo tempo, \u00e9 preciso controlar rigorosamente o processo de produ\u00e7\u00e3o de nitrog\u00eanio para que sua pureza atenda aos requisitos.<\/p>","protected":false},"excerpt":{"rendered":"

Aluminum melt purification method adopts the bubble floatation method for three refinings, blowing N2+ high-temperature refining agent into the melt, and on-line purification outside the…<\/p>","protected":false},"author":1,"featured_media":9516,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9515","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAluminum Melt Purification Method, Molten Aluminum Refining<\/title>\n<meta name=\"description\" content=\"Aluminum melt purification method adopts the bubble floatation method for three refinings, blowing N2+ high-temperature refinig agent...\" \/>\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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