{"id":7155,"date":"2020-12-23T02:12:33","date_gmt":"2020-12-23T02:12:33","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7155"},"modified":"2020-12-23T02:12:33","modified_gmt":"2020-12-23T02:12:33","slug":"ceramic-filter-for-aluminum-casting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/ceramic-filter-for-aluminum-casting\/","title":{"rendered":"Filtro cer\u00e2mico para fundi\u00e7\u00e3o de alum\u00ednio"},"content":{"rendered":"

O filtro cer\u00e2mico para fundi\u00e7\u00e3o de alum\u00ednio n\u00e3o s\u00f3 remove com efic\u00e1cia um grande n\u00famero de impurezas estranhas do alum\u00ednio fundido, como tamb\u00e9m filtra inclus\u00f5es finas de poucos m\u00edcrons que n\u00e3o podem ser removidas por processos tradicionais. Os \u00e1tomos de hidrog\u00eanio e outros \u00edons nocivos presentes no alum\u00ednio fundido s\u00e3o geralmente adsorvidos nas inclus\u00f5es, o que pode se tornar o n\u00facleo da forma\u00e7\u00e3o de bolhas.<\/p>\n

Portanto, ao filtrar as inclus\u00f5es, o filtro cer\u00e2mico para fundi\u00e7\u00e3o de alum\u00ednio tamb\u00e9m pode reduzir o teor desses elementos e gases nocivos no alum\u00ednio l\u00edquido. Alguns estudos tamb\u00e9m indicam que o disco filtrante ret\u00e9m muitas inclus\u00f5es pequenas, reduzindo assim os n\u00facleos cristalinos efetivos necess\u00e1rios para a solidifica\u00e7\u00e3o do alum\u00ednio fundido. Em condi\u00e7\u00f5es de subresfriamento mais acentuadas, os filtros cer\u00e2micos para fundi\u00e7\u00e3o de alum\u00ednio podem promover o crescimento dos n\u00facleos de alum\u00ednio, refinar a estrutura e melhorar o desempenho do produto.<\/p>\n

Ap\u00f3s a conclus\u00e3o da fundi\u00e7\u00e3o, h\u00e1 uma grande quantidade de esc\u00f3ria na superf\u00edcie da liga de alum\u00ednio, composta principalmente por Al\u2082O\u2083 e outras inclus\u00f5es de \u00f3xidos. Essas pequenas inclus\u00f5es s\u00e3o mais pesadas que o alum\u00ednio l\u00edquido, mas, ap\u00f3s a aglomera\u00e7\u00e3o, sua densidade espec\u00edfica torna-se menor, fazendo com que flutuem na superf\u00edcie; por isso, \u00e9 necess\u00e1rio remov\u00ea-las. Adicione o removedor de esc\u00f3ria na quantidade de 0,2% a 0,5%, espalhe-o uniformemente sobre a superf\u00edcie do alum\u00ednio fundido e realize uma agita\u00e7\u00e3o superficial e uniforme.<\/p>\n

Coloque a esc\u00f3ria na porta do forno e feche-a para mant\u00ea-la na posi\u00e7\u00e3o vertical. Por um lado, o agente de limpeza de esc\u00f3ria tem um efeito de aquecimento e pode derreter o alum\u00ednio fundido aderido \u00e0 esc\u00f3ria; por outro lado, ele consegue misturar eficazmente a esc\u00f3ria e o alum\u00ednio fundido, facilitando a separa\u00e7\u00e3o, o que \u00e9 ben\u00e9fico para a esc\u00f3ria. Depois que a esc\u00f3ria repousar por alguns minutos, a esc\u00f3ria de alum\u00ednio pode ser removida facilmente da porta do forno. Ap\u00f3s o refinamento, o alum\u00ednio fundido tamb\u00e9m precisa ser desgaseificado e filtrado. O desgaseificador em linha e Caixa de filtro CFF<\/a> s\u00e3o geralmente instalados entre o forno de fus\u00e3o e a m\u00e1quina de fundi\u00e7\u00e3o.<\/p>\n

Filtro de espuma cer\u00e2mica de alumina<\/a> \u00c9 utilizado principalmente para a filtragem de ligas de alum\u00ednio em oficinas de fundi\u00e7\u00e3o. O filtro CFF apresenta excelente resist\u00eancia \u00e0 corros\u00e3o causada pelo alum\u00ednio fundido, sendo capaz de remover eficazmente as inclus\u00f5es e reduzir o g\u00e1s residual.<\/p>","protected":false},"excerpt":{"rendered":"

The ceramic filter for aluminum casting can not only effectively remove a large number of foreign impurities in the molten aluminum, but also filter out…<\/p>","protected":false},"author":1,"featured_media":7156,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-7155","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"\nCeramic Filter for Aluminum Casting, Alumina Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"Ceramic filter for aluminum casting can also reduce the content of these harmful elements and gases in the aluminum liquid.\" \/>\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\/ceramic-filter-for-aluminum-casting\/\" \/>\n<meta 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