{"id":5331,"date":"2020-09-30T03:59:37","date_gmt":"2020-09-30T03:59:37","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5331"},"modified":"2020-09-30T03:59:37","modified_gmt":"2020-09-30T03:59:37","slug":"purification-treatment","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/purification-treatment\/","title":{"rendered":"Tratamento de purifica\u00e7\u00e3o"},"content":{"rendered":"

A tecnologia de tratamento de purifica\u00e7\u00e3o do alum\u00ednio fundido \u00e9 o primeiro processo-chave que determina a aplica\u00e7\u00e3o dos materiais de liga de alum\u00ednio. Ela determina se os materiais de liga de alum\u00ednio apresentam defeitos metal\u00fargicos e se possuem capacidade de transmitir propriedades de alto desempenho, al\u00e9m de ser determinante para sua aplica\u00e7\u00e3o e desenvolvimento em diversos campos.<\/p>\n

O processo de purifica\u00e7\u00e3o da liga de alum\u00ednio fundida da empresa utiliza principalmente fornos refinamento por fluxo<\/a> e processos de remo\u00e7\u00e3o est\u00e1tica de esc\u00f3ria. A remo\u00e7\u00e3o est\u00e1tica de esc\u00f3ria baseia-se na diferen\u00e7a de densidade entre o \u00f3xido n\u00e3o met\u00e1lico e o pr\u00f3prio l\u00edquido da liga. Em um determinado per\u00edodo de tempo, o \u00f3xido n\u00e3o met\u00e1lico e o l\u00edquido da liga s\u00e3o separados para atingir o objetivo de purificar o alum\u00ednio fundido. Este artigo tem como objetivo determinar, por meio de experimentos, o melhor tempo de repouso do alum\u00ednio fundido.<\/p>\n

O forno de teste \u00e9 um forno est\u00e1tico para liga de alum\u00ednio com capacidade para 20 toneladas. O objetivo do forno est\u00e1tico \u00e9 remover esc\u00f3rias, estabilizar e ajustar com precis\u00e3o a composi\u00e7\u00e3o da mistura de alum\u00ednio fundido no forno de fundi\u00e7\u00e3o e no forno de sucata de alum\u00ednio, purificando assim o l\u00edquido de liga de alum\u00ednio e fornecendo l\u00edquido de liga de alum\u00ednio de alta qualidade para a pr\u00f3xima etapa do processo.<\/p>\n

O alum\u00ednio fundido do forno de fus\u00e3o e do forno de sucata de alum\u00ednio entra no forno est\u00e1tico atrav\u00e9s do canal de fundi\u00e7\u00e3o<\/a> de acordo com a propor\u00e7\u00e3o, e a temperatura \u00e9 aumentada. Quando a temperatura atinge 740 \u2103 ou mais, 20 kg de agente de limpeza de esc\u00f3ria s\u00e3o adicionados ao pulverizador de p\u00f3, e o agente de limpeza de esc\u00f3ria \u00e9 injetado na liga de alum\u00ednio com nitrog\u00eanio. O interior do l\u00edquido passa por uma opera\u00e7\u00e3o de purifica\u00e7\u00e3o da fus\u00e3o, e a esc\u00f3ria \u00e9 removida ap\u00f3s 15 minutos de pulveriza\u00e7\u00e3o. Ap\u00f3s a conclus\u00e3o da remo\u00e7\u00e3o da esc\u00f3ria, inicie a fase de repouso.<\/p>\n

\"Tratamento<\/p>\n

O valor de inclus\u00e3o de esc\u00f3ria do alum\u00ednio fundido \u00e9 mais elevado logo ap\u00f3s a remo\u00e7\u00e3o da esc\u00f3ria no forno de repouso. Com o aumento do tempo de repouso, o valor de inclus\u00e3o de esc\u00f3ria do alum\u00ednio fundido apresenta uma redu\u00e7\u00e3o gradual. Quando o tempo de repouso \u00e9 de 15 minutos, o valor de inclus\u00e3o de esc\u00f3ria do alum\u00ednio fundido atinge basicamente um valor baixo; e, quando esse tempo \u00e9 superior a 15 minutos, o valor de inclus\u00e3o de esc\u00f3ria do alum\u00ednio fundido permanece basicamente est\u00e1vel, com uma varia\u00e7\u00e3o m\u00ednima.<\/p>\n

\u00c0 medida que o tempo de repouso aumenta, a taxa de defeitos por inclus\u00e3o de esc\u00f3ria da liga apresenta uma tend\u00eancia de queda. A taxa de defeitos por inclus\u00e3o de esc\u00f3ria atinge seu valor m\u00e1ximo ap\u00f3s a conclus\u00e3o da remo\u00e7\u00e3o da esc\u00f3ria do forno em repouso. Nos primeiros 25 minutos, a taxa de defeitos caiu significativamente e, em seguida, basicamente se estabilizou, com uma taxa de defeitos de 0,05%.<\/p>\n

Quando o tempo de repouso \u00e9 de 15 minutos, o valor de inclus\u00e3o de esc\u00f3ria do alum\u00ednio fundido atinge, basicamente, um valor baixo; e, quando esse tempo \u00e9 superior a 15 minutos, o valor de inclus\u00e3o de esc\u00f3ria do alum\u00ednio fundido permanece, basicamente, est\u00e1vel. Quando o tempo de repouso \u00e9 superior a 25 minutos, a taxa de defeitos permanece, basicamente, est\u00e1vel. Quando o alum\u00ednio fundido repousa por mais de 25 minutos, sua pureza pode atingir um n\u00edvel melhor; ou seja, o alum\u00ednio fundido pode repousar por pelo menos 25 minutos antes de ser transferido para a pr\u00f3xima esta\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"

The purification treatment technology of aluminum melt is the first key process that determines the application of aluminum alloy materials. It determines whether aluminum alloy…<\/p>","protected":false},"author":1,"featured_media":5332,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5331","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nPurification Treatment Technology of Aluminum Melt<\/title>\n<meta name=\"description\" content=\"The purification treatment technology of aluminum melt is the first key process that determines the application of aluminum alloy materials.\" \/>\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\/purification-treatment\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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