{"id":8193,"date":"2021-03-31T02:23:31","date_gmt":"2021-03-31T02:23:31","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8193"},"modified":"2021-03-31T02:23:31","modified_gmt":"2021-03-31T02:23:31","slug":"aluminum-alloy-purification","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-alloy-purification\/","title":{"rendered":"Purifica\u00e7\u00e3o de ligas de alum\u00ednio"},"content":{"rendered":"

A purifica\u00e7\u00e3o da liga de alum\u00ednio utiliza o refinamento por inje\u00e7\u00e3o de p\u00f3 de nitrog\u00eanio no forno de fus\u00e3o e um sistema internacional avan\u00e7ado de desgaseifica\u00e7\u00e3o e filtragem. O sistema de desgaseifica\u00e7\u00e3o em linha adota a tecnologia de refinamento a g\u00e1s por rotor, que apresenta alta efici\u00eancia de desgaseifica\u00e7\u00e3o e permite alcan\u00e7ar um efeito satisfat\u00f3rio de remo\u00e7\u00e3o de hidrog\u00eanio, garantindo a qualidade interna do lingote.<\/p>\n

Detritos n\u00e3o met\u00e1licos e gases (principalmente H\u2082) na massa fundida s\u00e3o os principais fatores que afetam o processo de fundi\u00e7\u00e3o e a qualidade do lingote. A liga de alum\u00ednio apresenta uma forte tend\u00eancia \u00e0 oxida\u00e7\u00e3o e \u00e0 forma\u00e7\u00e3o de gases. Durante o processo de fundi\u00e7\u00e3o, ela fica em contato direto com os gases do forno ou com a atmosfera externa. Durante a fundi\u00e7\u00e3o e a transfer\u00eancia do alum\u00ednio fundido, gases e inclus\u00f5es s\u00e3o gerados no metal fundido devido \u00e0 absor\u00e7\u00e3o de gases e \u00e0 oxida\u00e7\u00e3o, o que reduz a pureza do alum\u00ednio l\u00edquido. As inclus\u00f5es e os gases presentes no metal t\u00eam um impacto significativo na resist\u00eancia mec\u00e2nica, na resist\u00eancia \u00e0 fadiga, na resist\u00eancia \u00e0 corros\u00e3o e no comportamento \u00e0 corros\u00e3o sob tens\u00e3o dos perfis de liga de alum\u00ednio.<\/p>\n

O controle eficaz das inclus\u00f5es oxidadas da massa fundida, com o objetivo de melhorar a qualidade interna das barras e placas fundidas, tornou-se uma meta comum buscada pelos setores de metalurgia, fundi\u00e7\u00e3o e processamento de materiais. As usinas de alum\u00ednio podem utilizar uma s\u00e9rie de tecnologias avan\u00e7adas de purifica\u00e7\u00e3o de ligas de alum\u00ednio, tais como refino por inje\u00e7\u00e3o de fluxo em p\u00f3, desgaseifica\u00e7\u00e3o por unidade de desgaseifica\u00e7\u00e3o em linha e filtragem por espuma cer\u00e2mica no forno de fus\u00e3o. Isso permite garantir a qualidade do alum\u00ednio fundido e assegurar o processamento posterior.<\/p>\n

\"Refinamento<\/p>\n

Durante a etapa de fus\u00e3o, parte do teor de hidrog\u00eanio ser\u00e1 removida pela redu\u00e7\u00e3o da temperatura da massa fundida e refinamento por fus\u00e3o<\/a>, e a maior parte do hidrog\u00eanio ser\u00e1 removida por equipamentos de refino em linha.<\/p>\n

A desgaseifica\u00e7\u00e3o em linha \u00e9 geralmente realizada por meio de equipamentos espec\u00edficos para esse fim. Quando o equipamento de desgaseifica\u00e7\u00e3o est\u00e1 em funcionamento, uma grande quantidade de g\u00e1s inerte \u00e9 ejetada do rotor e, sob a a\u00e7\u00e3o da rota\u00e7\u00e3o em alta velocidade do rotor, transforma-se em bolhas extremamente min\u00fasculas, que se dispersam no espa\u00e7o interno da caixa de desgaseifica\u00e7\u00e3o; o hidrog\u00eanio presente na massa fundida \u00e9 absorvido por essas pequenas bolhas, reduzindo assim o teor de hidrog\u00eanio. Obviamente, quanto melhor for o efeito de dispers\u00e3o das bolhas, melhor ser\u00e1 o efeito de desgaseifica\u00e7\u00e3o.<\/p>\n

O sistema de filtragem online utiliza placas filtrantes de espuma cer\u00e2mica<\/a>. Na produ\u00e7\u00e3o, de acordo com as exig\u00eancias dos clientes, utiliza-se uma filtragem em duas etapas para atender aos requisitos de filtragem de clientes de alto padr\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"

Aluminum alloy purification adopts smelting furnace nitrogen powder injection refining and international advanced degassing filtration system. The online degassing system adopts rotor gas refining technology,…<\/p>","protected":false},"author":1,"featured_media":8194,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8193","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAluminum Alloy Purification by advanced degassing filtration system<\/title>\n<meta name=\"description\" content=\"Aluminum alloy purification filtration system uses ceramic foam filter, two-stage filtration is used to meet the high-end customers.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/pt\/aluminum-alloy-purification\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" 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