{"id":6165,"date":"2020-11-03T08:57:57","date_gmt":"2020-11-03T08:57:57","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6165"},"modified":"2020-11-03T08:57:57","modified_gmt":"2020-11-03T08:57:57","slug":"refining-of-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/refining-of-aluminum\/","title":{"rendered":"Refino de alum\u00ednio"},"content":{"rendered":"

A inclus\u00e3o de esc\u00f3ria causa arranh\u00f5es, obstru\u00e7\u00f5es e rasgos no perfil da matriz de extrus\u00e3o. Como a barra de liga 6063 \u00e9 fundida diretamente com alum\u00ednio l\u00edquido eletrol\u00edtico, a quantidade de esc\u00f3ria contida no alum\u00ednio l\u00edquido \u00e9 elevada, o que torna o processo de refino do alum\u00ednio particularmente importante. No refino, adotamos principalmente as seguintes medidas:<\/p>\n

    \n
  1. Escolha produtos de alta qualidade agentes de refino<\/a>. Alguns agentes de refino apresentam baixo teor de Na\u2083AlF\u2086 (crioita), e seu efeito na remo\u00e7\u00e3o de esc\u00f3ria e g\u00e1s \u00e9 muito insatisfat\u00f3rio.<\/li>\n
  2. Mude da refina\u00e7\u00e3o prim\u00e1ria para a refina\u00e7\u00e3o secund\u00e1ria de refor\u00e7o. A primeira dosagem \u00e9 de 3 a 4 kg por tonelada de alum\u00ednio, e a segunda refina\u00e7\u00e3o intensificada utiliza de 2 a 3 kg do banho fundido por tonelada de alum\u00ednio, sem deixar pontos mortos, misturando e refinando minuciosamente.<\/li>\n
  3. A camp\u00e2nula de vidro \u00e9 pressionada contra o banho de metal fundido para refinamento por inje\u00e7\u00e3o de nitrog\u00eanio em p\u00f3.<\/li>\n
  4. Para evitar a reoxida\u00e7\u00e3o do alum\u00ednio fundido, espalha-se uma camada de agente de cobertura no banho de metal fundido ap\u00f3s o refinamento, e a fundi\u00e7\u00e3o \u00e9 realizada ap\u00f3s um repouso de 20 minutos.<\/li>\n
  5. Filtrar por filtro de espuma cer\u00e2mica<\/a> durante a fundi\u00e7\u00e3o. Deixe o metal fundido fluir por ele e realize a remo\u00e7\u00e3o secund\u00e1ria de esc\u00f3ria.<\/li>\n<\/ol>\n

    A AdTech resolve especificamente o problema da inclus\u00e3o de esc\u00f3ria no alum\u00ednio fundido. A AdTech oferece equipamento de desgaseifica\u00e7\u00e3o online<\/a>, placas filtrantes de espuma cer\u00e2mica, fluxo para fundi\u00e7\u00e3o de alum\u00ednio, canal de fundi\u00e7\u00e3o e outros materiais refrat\u00e1rios.<\/p>\n

    \"Refino<\/p>\n

    A caixa de desgaseifica\u00e7\u00e3o \u00e9 utilizada principalmente para remover hidrog\u00eanio (H) e esc\u00f3ria do alum\u00ednio fundido. Ela se baseia no princ\u00edpio da flota\u00e7\u00e3o a ar. O rotor aspira g\u00e1s inerte ou uma mistura de cloro e g\u00e1s inerte para dentro do alum\u00ednio fundido e o pulveriza em pequenas bolhas dispersas. As bolhas sobem at\u00e9 a superf\u00edcie do alum\u00ednio fundido e, ao mesmo tempo, realizam as seguintes etapas: o H \u00e9 absorvido pelas bolhas e removido, e o cloreto e a esc\u00f3ria s\u00e3o removidos.<\/p>\n

    Sistema de filtragem CFF<\/a> \u00c9 utilizado para a filtragem e purifica\u00e7\u00e3o do alum\u00ednio fundido, em combina\u00e7\u00e3o com o filtro de espuma cer\u00e2mica. \u00c9 capaz de filtrar as inclus\u00f5es e as part\u00edculas min\u00fasculas presentes no alum\u00ednio fundido. \u00c9 especialmente adequado para a fundi\u00e7\u00e3o de alum\u00ednio de alta pureza e de ligas de alum\u00ednio de alta precis\u00e3o. Possui as seguintes vantagens: resist\u00eancia t\u00e9rmica, prote\u00e7\u00e3o contra oxida\u00e7\u00e3o, resist\u00eancia \u00e0 corros\u00e3o, aquecimento r\u00e1pido, longa vida \u00fatil e resist\u00eancia a \u00e1cidos.<\/p>","protected":false},"excerpt":{"rendered":"

    Slag inclusion causes scratches, blockages and profile tearing of the extrusion die. Because the 6063 alloy rod is directly cast with electrolytic aluminum liquid, the…<\/p>","protected":false},"author":1,"featured_media":6167,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6165","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nRefining of Aluminum | Online Degassing and CFF Filtering<\/title>\n<meta name=\"description\" content=\"The amount of slag contained in the aluminum liquid is large, which makes the refining process of aluminum particularly important.\" \/>\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\/refining-of-aluminum\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" 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