{"id":2234,"date":"2020-06-11T06:17:03","date_gmt":"2020-06-11T06:17:03","guid":{"rendered":"http:\/\/alalloycasting.com\/?p=2234"},"modified":"2020-09-04T09:05:08","modified_gmt":"2020-09-04T09:05:08","slug":"cff-filtration-mechanism","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/cff-filtration-mechanism\/","title":{"rendered":"Mecanismo de filtragem CFF"},"content":{"rendered":"

Com o desenvolvimento da ind\u00fastria metal\u00fargica, as fundi\u00e7\u00f5es de alum\u00ednio dedicam cada vez mais aten\u00e7\u00e3o \u00e0 pureza do alum\u00ednio. O m\u00e9todo de filtragem CFF \u00e9, atualmente, o mais utilizado e o mais econ\u00f4mico do mundo. Ent\u00e3o, voc\u00ea conhece o mecanismo de filtragem CFF? Vamos entender isso juntos.<\/p>\n

Mecanismo de filtragem CFF<\/h2>\n

Por meio da peneira\u00e7\u00e3o, da intercepta\u00e7\u00e3o por difus\u00e3o, do atrito, da sedimenta\u00e7\u00e3o e de outros princ\u00edpios de filtra\u00e7\u00e3o mec\u00e2nica, placas filtrantes de espuma cer\u00e2mica<\/a> pode reter as impurezas presentes no alum\u00ednio l\u00edquido, permitindo que o alum\u00ednio l\u00edquido puro flua suavemente pelos poros do filtro. A efici\u00eancia da filtragem \u00e9 proporcional ao tamanho dos poros da malha cer\u00e2mica de espuma. Quanto menor a malha, maior a capacidade de reter part\u00edculas pequenas.<\/p>\n

O efeito da camada de sedimentos ou da camada de bolo de filtra\u00e7\u00e3o. Com a deposi\u00e7\u00e3o de part\u00edculas na massa fundida, as grades curvas interconectadas atuam como paredes de suporte, e a capacidade de capturar part\u00edculas heterof\u00e1sicas \u00e9 aprimorada.<\/p>\n

\"\"<\/p>\n

A superf\u00edcie rugosa formada pelas lacunas na superf\u00edcie do corpo do arcabou\u00e7o aumenta a \u00e1rea de contato entre o fluxo de alum\u00ednio l\u00edquido e a superf\u00edcie s\u00f3lida da cer\u00e2mica. Isso pode fazer com que as part\u00edculas no fluxo de alum\u00ednio l\u00edquido fiquem mais desordenadas, o que favorece a captura e a deposi\u00e7\u00e3o de part\u00edculas s\u00f3lidas.<\/p>\n

Devido \u00e0s microfissuras e aos poros min\u00fasculos na superf\u00edcie da estrutura de malha, foram previamente depositados fluoretos com forte afinidade por part\u00edculas como o Al\u2082O\u2083. Isso pode promover o efeito completo da camada de bolo de filtra\u00e7\u00e3o e uma forte for\u00e7a de adsor\u00e7\u00e3o qu\u00edmica, al\u00e9m de refor\u00e7ar a capacidade de capturar as part\u00edculas heterog\u00eaneas remanescentes.<\/p>\n

Filtragem por espuma cer\u00e2mica<\/h2>\n

Al\u00e9m disso, o efeito do campo de temperatura decorrente do processo de fundi\u00e7\u00e3o e do processo de transmiss\u00e3o da estrutura do metal fundido inevitavelmente formar\u00e1 uma diferen\u00e7a significativa na concentra\u00e7\u00e3o do soluto da liga no fundo do tanque. O metal fundido passa por um ciclo de redistribui\u00e7\u00e3o \u2014 integra\u00e7\u00e3o \u2014 redistribui\u00e7\u00e3o \u2014 integra\u00e7\u00e3o, o que tamb\u00e9m constitui um bom processo de liga. Algumas fases e compostos met\u00e1licos de alto ponto de fus\u00e3o se reagrupam e crescem, enquanto as fases finas heterog\u00eaneas se agregam e crescem, o que favorece a filtra\u00e7\u00e3o e a captura. Isso tamb\u00e9m pode ser explicado pelas mudan\u00e7as na concentra\u00e7\u00e3o de H, Al\u2082O\u2083, fase de Fe e fase de Ti antes e depois da filtra\u00e7\u00e3o. Isso fica especialmente mais evidente na filtra\u00e7\u00e3o em duas etapas ou na filtra\u00e7\u00e3o por placa espessa com gradiente de poros.<\/p>","protected":false},"excerpt":{"rendered":"

With the development of the metallurgical industry, aluminum foundries pay more and more attention to the purity of aluminum. The CFF filtering method is currently…<\/p>","protected":false},"author":1,"featured_media":4519,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[380,379],"class_list":["post-2234","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ceramic-foam-filter-for-aluminum-foundry","tag-cff-filtration-mechanism"],"yoast_head":"\nCFF Filtration Mechanism, Ceramic Foam Filter for Aluminum Foundry<\/title>\n<meta name=\"description\" content=\"CFF Filtration Mechanism by ceramic foam filiter is currently the most widely used and most economical filtering method in the world.\" \/>\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\/cff-filtration-mechanism\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" 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