{"id":10055,"date":"2021-08-25T09:23:36","date_gmt":"2021-08-25T09:23:36","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10055"},"modified":"2021-08-24T09:31:45","modified_gmt":"2021-08-24T09:31:45","slug":"ceramic-molten-metal-filter","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/ceramic-molten-metal-filter\/","title":{"rendered":"Filtro cer\u00e2mico para metal fundido"},"content":{"rendered":"<p>O uso de filtros cer\u00e2micos para metal fundido na remo\u00e7\u00e3o de impurezas do alum\u00ednio fundido \u00e9, atualmente, um m\u00e9todo amplamente utilizado por fabricantes do setor de processamento de alum\u00ednio. Esse m\u00e9todo apresenta caracter\u00edsticas como forte adaptabilidade, baixo custo, opera\u00e7\u00e3o segura e simples, al\u00e9m de um efeito not\u00e1vel. No entanto, h\u00e1 muitos aspectos do filtro cer\u00e2mico para metal fundido que devem ser levados em considera\u00e7\u00e3o durante o processo de uso; caso contr\u00e1rio, isso afetar\u00e1 o funcionamento normal e sua efic\u00e1cia.<\/p>\n<p>O efeito de filtragem de <a href=\"http:\/\/www.alalloycasting.com\/pt\/ceramic-foam-filter-plates\/\">Placas filtrantes de espuma cer\u00e2mica<\/a> geralmente atinge 90%. O teor de impurezas na massa fundida antes da filtragem \u00e9 alto, e o teor de impurezas na massa fundida ap\u00f3s a filtragem \u00e9 relativamente alto, e vice-versa. Portanto, as opera\u00e7\u00f5es realizadas antes da filtragem pelas placas de filtro de espuma cer\u00e2mica devem ser feitas com cuidado; caso contr\u00e1rio, isso afetar\u00e1 o efeito da filtragem.<\/p>\n<p>A fim de reduzir o teor de impurezas na massa fundida, a remo\u00e7\u00e3o de esc\u00f3ria e a limpeza devem ser realizadas regularmente, e os dep\u00f3sitos no fundo e nas paredes do forno devem ser removidos. Antes da filtragem da massa fundida, o alum\u00ednio fundido \u00e9 refinado com g\u00e1s e agente refinador; em seguida, a esc\u00f3ria \u00e9 removida e a massa \u00e9 deixada em repouso.<\/p>\n<p>Atualmente, o agente refinador \u00e9 injetado no alum\u00ednio fundido por meio de equipamentos especiais, e as impurezas e gases presentes no alum\u00ednio fundido s\u00e3o levados \u00e0 superf\u00edcie e afundados por meio de tratamento de press\u00e3o parcial e altera\u00e7\u00f5es f\u00edsico-qu\u00edmicas; o efeito de purifica\u00e7\u00e3o \u00e9 alcan\u00e7ado ap\u00f3s a remo\u00e7\u00e3o da esc\u00f3ria e o repouso. Algumas fundi\u00e7\u00f5es intensificaram o processo de desgaseifica\u00e7\u00e3o cont\u00ednua on-line antes da fundi\u00e7\u00e3o, ao mesmo tempo em que utilizam o refinamento no forno, principalmente por meio da introdu\u00e7\u00e3o de nitrog\u00eanio de alta energia para obter uma desgaseifica\u00e7\u00e3o e remo\u00e7\u00e3o de esc\u00f3ria mais completas. Ap\u00f3s a desgaseifica\u00e7\u00e3o, utiliza-se um filtro de espuma cer\u00e2mica para a filtragem, o que melhora o efeito de purifica\u00e7\u00e3o do alum\u00ednio l\u00edquido.<\/p>\n<p>Quando o metal fundido sair do forno, evite correntes parasitas e respingos que danifiquem a camada de \u00f3xido na superf\u00edcie do alum\u00ednio fundido. O revestimento da calha deve ser feito de materiais refrat\u00e1rios que n\u00e3o se danifiquem facilmente e deve ser seco antes do uso.<\/p>","protected":false},"excerpt":{"rendered":"<p>The use of ceramic molten metal filter to remove impurities in the aluminum melt is currently a method widely used by aluminum processing manufacturers. It&hellip;<\/p>","protected":false},"author":1,"featured_media":10056,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[8545,12499],"class_list":["post-10055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-foam-filter","tag-ceramic-foam-filter-plates","tag-ceramic-molten-metal-filter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ceramic Molten Metal Filter, Ceramic Foam Filter Plates<\/title>\n<meta name=\"description\" content=\"The use of ceramic molten metal filter to remove impurities in the aluminum melt is a method widely used by aluminum foundry.\" \/>\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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