{"id":9996,"date":"2021-08-20T06:30:29","date_gmt":"2021-08-20T06:30:29","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9996"},"modified":"2021-08-20T06:30:29","modified_gmt":"2021-08-20T06:30:29","slug":"molten-alu-filters","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/molten-alu-filters\/","title":{"rendered":"Filtros de alum\u00ednio fundido"},"content":{"rendered":"<p>Os filtros de espuma cer\u00e2mica para alum\u00ednio fundido conseguem filtrar com efic\u00e1cia as inclus\u00f5es presentes no alum\u00ednio fundido e o hidrog\u00eanio adsorvido na superf\u00edcie dessas inclus\u00f5es.<\/p>\n<p>O material do filtro inclui, principalmente, um tubo cer\u00e2mico microporoso de corindo, malha de fibra de vidro e <a href=\"http:\/\/www.alalloycasting.com\/pt\/foam-ceramics\/\">cer\u00e2mica de espuma<\/a>.<\/p>\n<p>O tubo cer\u00e2mico microporoso de corindo \u00e9 capaz de filtrar inclus\u00f5es de \u00f3xido com tamanho de v\u00e1rios m\u00edcrons. A vantagem \u00e9 que ele apresenta melhor desempenho na remo\u00e7\u00e3o de esc\u00f3ria, mas a desvantagem \u00e9 que sua efici\u00eancia \u00e9 baixa.<\/p>\n<p>A rede de fibra de vidro apresenta grande adaptabilidade, opera\u00e7\u00e3o simples e baixo custo. No entanto, devido \u00e0 sua pequena \u00e1rea de abertura, \u00e9 f\u00e1cil obstruir o sistema de alimenta\u00e7\u00e3o e a filtragem se torna inst\u00e1vel. Durante o uso, a malha de fibra de vidro precisa ser substitu\u00edda com frequ\u00eancia, e \u00e9 dif\u00edcil remover inclus\u00f5es de pequeno porte. O tamanho dos orif\u00edcios da malha de fibra de vidro \u00e9 de 1,2 mm \u00d7 1,5 mm, o n\u00famero de orif\u00edcios por cent\u00edmetro quadrado \u00e9 de 30 e a vaz\u00e3o de filtra\u00e7\u00e3o \u00e9 de cerca de 20 kg\/min.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9882\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/08\/Ceramic-Foam-Filter-Liner-2.jpg\" alt=\"Revestimento de filtro de espuma cer\u00e2mica\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/08\/Ceramic-Foam-Filter-Liner-2.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/08\/Ceramic-Foam-Filter-Liner-2-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Os filtros de espuma cer\u00e2mica para alum\u00ednio fundido apresentam alta porosidade, ampla \u00e1rea de adsor\u00e7\u00e3o e opera\u00e7\u00e3o pr\u00e1tica. O filtro de espuma cer\u00e2mica oferece o melhor efeito de filtragem para inclus\u00f5es oxidadas com tamanho superior a 10 \u00b5m, mas tem dificuldade em remover inclus\u00f5es oxidadas de tamanho min\u00fasculo. Para se obter alum\u00ednio fundido de alta qualidade, quanto menor for o tamanho dos poros da placa filtrante, melhor. Em aplica\u00e7\u00f5es pr\u00e1ticas, o m\u00e9todo de filtragem CFF \u00e9 frequentemente combinado com o m\u00e9todo de sopro. Como a espuma cer\u00e2mica \u00e9 fr\u00e1gil, se danifica facilmente, n\u00e3o pode ser reutilizada e seus poros s\u00e3o relativamente retos, a efici\u00eancia na remo\u00e7\u00e3o de inclus\u00f5es \u00e9 baixa.<\/p>\n<p>Testes comprovaram que o uso de um fluxo de purifica\u00e7\u00e3o de alta efici\u00eancia +<a href=\"http:\/\/www.alalloycasting.com\/pt\/cff-filtration\/\"> Filtragem CFF<\/a> O processo de purifica\u00e7\u00e3o do alum\u00ednio fundido pode reduzir o teor de impurezas e a taxa de poros min\u00fasculos do alum\u00ednio puro das classes 70% a 82% e 60% a 88%, respectivamente. Ap\u00f3s a desgaseifica\u00e7\u00e3o em linha, o desempenho do alum\u00ednio pode ser ainda mais aprimorado. O segredo da filtragem e purifica\u00e7\u00e3o com fluxo est\u00e1 em realizar os tr\u00eas processos de fus\u00e3o, desgaseifica\u00e7\u00e3o e remo\u00e7\u00e3o de impurezas do alum\u00ednio de uma s\u00f3 vez durante o processo de fundi\u00e7\u00e3o, o que pode reduzir significativamente os defeitos causados por inclus\u00f5es no alum\u00ednio.<\/p>","protected":false},"excerpt":{"rendered":"<p>The ceramic foam molten Alu filters can effectively filter out the inclusions in the aluminum melt and the hydrogen adsorbed on the surface of the&hellip;<\/p>","protected":false},"author":1,"featured_media":9997,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[4682,12391],"class_list":["post-9996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-foam-filter","tag-ceramic-foam-filter-for-casting","tag-molten-alu-filters"],"yoast_head":"<!-- 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