{"id":6742,"date":"2020-11-27T02:33:41","date_gmt":"2020-11-27T02:33:41","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6742"},"modified":"2020-11-27T02:33:41","modified_gmt":"2020-11-27T02:33:41","slug":"molten-aluminum-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/molten-aluminum-degassing\/","title":{"rendered":"Desgaseifica\u00e7\u00e3o do alum\u00ednio fundido"},"content":{"rendered":"

Ap\u00f3s a liga de alum\u00ednio para fundi\u00e7\u00e3o sob press\u00e3o ser derretida e refinada, o alum\u00ednio fundido \u00e9 retirado ap\u00f3s o refinamento e a desgaseifica\u00e7\u00e3o; o tempo antes e depois da adi\u00e7\u00e3o do agente de refinamento, a vaz\u00e3o de nitrog\u00eanio no processo de desgaseifica\u00e7\u00e3o rotativa e a velocidade do unidade de desgaseifica\u00e7\u00e3o<\/a>\u00a0rotor de grafite, o tempo de desgaseifica\u00e7\u00e3o, o di\u00e2metro e a altura do rotor de grafite. A densidade do alum\u00ednio fundido \u00e9 medida e analisada durante o processo de produ\u00e7\u00e3o.<\/p>\n

Ap\u00f3s a desgaseifica\u00e7\u00e3o, o efeito da desgaseifica\u00e7\u00e3o em diferentes posi\u00e7\u00f5es do alum\u00ednio l\u00edquido no subcontrato \u00e9 inconsistente, sendo que a posi\u00e7\u00e3o pr\u00f3xima \u00e0 mesa girat\u00f3ria \u00e9 a pior;<\/p>\n

O fluxo de nitrog\u00eanio tem um certo impacto no local de forma\u00e7\u00e3o das bolhas, e as bolhas geradas por um fluxo intenso se espalham por uma dist\u00e2ncia maior, mas causam um agito mais intenso do alum\u00ednio l\u00edquido, o que pode representar riscos \u00e0 seguran\u00e7a da produ\u00e7\u00e3o;<\/p>\n

A velocidade exerce grande influ\u00eancia no efeito de desgaseifica\u00e7\u00e3o do alum\u00ednio fundido, e uma velocidade elevada pode garantir uma difus\u00e3o mais eficaz do g\u00e1s e impedir que o alum\u00ednio fundido forme ondula\u00e7\u00f5es;<\/p>\n

O tempo de tacada do agente refinador<\/a> tem pouco efeito na desgaseifica\u00e7\u00e3o rotativa e n\u00e3o consegue atingir o objetivo de refinar o interior do alum\u00ednio fundido. A esc\u00f3ria superficial presente na superf\u00edcie do alum\u00ednio fundido pode ser tratada. Recomenda-se o uso de um removedor de esc\u00f3ria para tratar a esc\u00f3ria superficial de alum\u00ednio. De acordo com a especifica\u00e7\u00e3o do agente de refino, a temperatura de uso do agente de refino \u00e9 de 700-750 \u2103, e a temperatura de uso do agente de remo\u00e7\u00e3o de esc\u00f3ria e desgaseifica\u00e7\u00e3o \u00e9 \u2265680 \u2103. Dif\u00edcil de controlar;<\/p>\n

\"Desgaseifica\u00e7\u00e3o<\/p>\n

A velocidade e o fluxo de nitrog\u00eanio devem ser utilizados em conjunto para garantir o efeito de desgaseifica\u00e7\u00e3o e evitar que o alum\u00ednio l\u00edquido se espalhe e seja oxidado. A vaz\u00e3o de 15 L\/min a 400 r\/min \u00e9 suficiente para atender aos requisitos;<\/p>\n

Durante o processo de desgaseifica\u00e7\u00e3o, as condi\u00e7\u00f5es de agita\u00e7\u00e3o do alum\u00ednio fundido e a presen\u00e7a de respingos desse material influenciam a desgaseifica\u00e7\u00e3o e a oxida\u00e7\u00e3o do alum\u00ednio fundido.<\/p>\n

Ap\u00f3s a desgaseifica\u00e7\u00e3o, a esc\u00f3ria de alum\u00ednio presente na superf\u00edcie do alum\u00ednio fundido e a densidade da amostra podem refletir o efeito da desgaseifica\u00e7\u00e3o do alum\u00ednio fundido.<\/p>","protected":false},"excerpt":{"rendered":"

After the die-casting aluminum alloy is melted and refined, the molten aluminum is taken after refining and degassing, the time before and after the refining…<\/p>","protected":false},"author":1,"featured_media":6743,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6742","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nMolten Aluminum Degassing Effect Influencing Factors<\/title>\n<meta name=\"description\" content=\"The speed and nitrogen flow must be used together to ensure the molten aluminum degassing effect and will not roll and be oxidized.\" \/>\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\/molten-aluminum-degassing\/\" \/>\n<meta property=\"og:locale\" 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