placa filtrante de espuma cer\u00e2mica<\/a> possui uma estrutura de rede tridimensional exclusiva e produtos cer\u00e2micos porosos com uma estrutura de poros interpenetrantes.<\/p>\nA placa filtrante de cer\u00e2mica espumada filtra e remove impurezas, o que pode melhorar significativamente a qualidade dos lingotes e reduzir a taxa de rejei\u00e7\u00e3o. Desde ent\u00e3o, a pesquisa e o desenvolvimento correspondentes de materiais filtrantes de cer\u00e2mica espumada t\u00eam sido promovidos na ind\u00fastria metal\u00fargica.<\/p>\n
A produ\u00e7\u00e3o do filtro de espuma cer\u00e2mica (CFF) geralmente utiliza uma estrutura de rede tridimensional e uma espuma org\u00e2nica com poros interconectados como suporte; em seguida, o suporte \u00e9 imerso em uma pasta cer\u00e2mica especial com propriedades tixotr\u00f3picas e passa por um processo especial de extrus\u00e3o por rolos para que a pasta cer\u00e2mica seja distribu\u00edda uniformemente sobre a estrutura do suporte, que \u00e9 secada e solidificada e, em seguida, queimada em alta temperatura.<\/p>\n
O mecanismo de filtragem do alum\u00ednio fundido por meio do filtro de espuma cer\u00e2mica \u00e9 geralmente descrito como intercepta\u00e7\u00e3o por difus\u00e3o e intercepta\u00e7\u00e3o por colis\u00e3o inercial, ou ainda como peneiramento, sedimenta\u00e7\u00e3o e filtragem em leito profundo.<\/p>\n
Quando o metal fundido passa pelo filtro de espuma cer\u00e2mica com estrutura complexa, o meio filtrante ret\u00e9m as inclus\u00f5es maiores do que o tamanho dos poros da superf\u00edcie do filtro por meio de separa\u00e7\u00e3o mec\u00e2nica, fazendo com que elas se precipitem na extremidade de entrada do metal l\u00edquido no filtro.<\/p>\n
\u00c0 medida que o ac\u00famulo de inclus\u00f5es na superf\u00edcie do filtro aumenta, forma-se gradualmente uma camada de \u201cbolo de filtra\u00e7\u00e3o\u201d, o que estreita ainda mais o canal de fluxo do metal fundido. Portanto, a superf\u00edcie do meio filtrante \u00e9 capaz de reter inclus\u00f5es mais finas. Ao mesmo tempo, o meio filtrante tamb\u00e9m possui uma fun\u00e7\u00e3o de filtragem, e qualquer \u00e1rea \u00e9 um local poss\u00edvel para a intercepta\u00e7\u00e3o de inclus\u00f5es.<\/p>","protected":false},"excerpt":{"rendered":"
The technology of ceramic foam filtration outside the furnace has long been an important means of purifying molten aluminum. Reflected in the alloying, purification and…<\/p>","protected":false},"author":1,"featured_media":11885,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[13066,8519],"class_list":["post-11884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ceramic-foam-aluminum-filtration","tag-ceramic-foam-filter-cff"],"yoast_head":"\n
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