{"id":10234,"date":"2021-09-09T06:20:15","date_gmt":"2021-09-09T06:20:15","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10234"},"modified":"2021-09-09T06:20:15","modified_gmt":"2021-09-09T06:20:15","slug":"aluminum-filters","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-filters\/","title":{"rendered":"Filtros de alum\u00ednio"},"content":{"rendered":"

Atualmente, a maioria das fundi\u00e7\u00f5es de alum\u00ednio utiliza equipamentos de filtragem por placas, que realizam a filtragem principalmente por meio de filtros de espuma cer\u00e2mica.<\/p>\n

Ao projetar e utilizar filtros de espuma cer\u00e2mica para alum\u00ednio fundido, deve-se prestar aten\u00e7\u00e3o aos seguintes aspectos:<\/p>\n

(1) De acordo com os requisitos do produto, selecione um material filtrante com tamanho de poro adequado. Geralmente, filtros de espuma cer\u00e2mica de 50 PPI s\u00e3o utilizados para produtos extrudados que exigem alta pureza interna, enquanto filtros de 30 PPI podem ser utilizados para outros produtos em geral. Melhorar adequadamente a precis\u00e3o da filtragem reduzir\u00e1 a tend\u00eancia do lingote de produzir cristais grosseiros e cristais em forma de penas.<\/p>\n

(2) Com o objetivo de melhorar o desempenho de filtragem e a vida \u00fatil do filtro, a \u00e1rea efetiva de filtragem do filtro deve ser aumentada ao m\u00e1ximo, ou seja, deve-se utilizar um filtro de grandes dimens\u00f5es.<\/p>\n

(3) Ao instalar o placa filtrante de espuma cer\u00e2mica<\/a> Na caixa do filtro, ela deve estar bem vedada e sem emendas para evitar vazamentos de alum\u00ednio fundido.<\/p>\n

\"\"<\/p>\n

(4) Antes do uso, o filtro deve ser totalmente pr\u00e9-aquecido, e a temperatura de pr\u00e9-aquecimento n\u00e3o deve ser inferior a 720 \u2103. No intervalo entre os momentos de fundi\u00e7\u00e3o e de fus\u00e3o, tamb\u00e9m deve-se prestar aten\u00e7\u00e3o \u00e0 reten\u00e7\u00e3o de calor.<\/p>\n

(5) Para atender aos requisitos de filtragem fina e aumentar a vida \u00fatil do filtro, \u00e9 recomend\u00e1vel utilizar tecido de vidro para realizar uma filtragem preliminar da massa fundida antes do filtro cer\u00e2mico.<\/p>\n

6) Organize a produ\u00e7\u00e3o de forma razo\u00e1vel e procure evitar mudan\u00e7as frequentes de ligas, que prejudicam o uso eficaz dos filtros.<\/p>\n

(7) Durante a filtragem, \u00e9 estritamente proibido espalhar p\u00f3 de fluxo no filtro e na calha do forno est\u00e1tico. Durante o processo de fundi\u00e7\u00e3o, a altura de press\u00e3o est\u00e1tica da massa fundida deve aumentar de forma constante para evitar flutua\u00e7\u00f5es no n\u00edvel do l\u00edquido, bem como vibra\u00e7\u00f5es e choques no molde. Antes de concluir a fundi\u00e7\u00e3o, a esc\u00f3ria na superf\u00edcie met\u00e1lica do filtro deve ser removida para evitar o entupimento da placa do filtro.<\/p>\n

(8) Evitar a polui\u00e7\u00e3o secund\u00e1ria da massa fundida filtrada.<\/p>","protected":false},"excerpt":{"rendered":"

At present, most aluminum foundries use plate filter equipment, which mainly filters through ceramic foam filters. The following issues should be paid attention to when…<\/p>","protected":false},"author":1,"featured_media":10235,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12667,811],"class_list":["post-10234","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-filters-used-for-foundries","tag-ceramic-foam-filter-plate"],"yoast_head":"\nAluminum Filters Used for Foundries, Ceramic Foam Filter Plate<\/title>\n<meta name=\"description\" content=\"At present, most aluminum foundries use plate filter equipment, which mainly filters molten aluminum through ceramic foam filters.\" \/>\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-filters\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" 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