{"id":8010,"date":"2021-03-09T08:13:14","date_gmt":"2021-03-09T08:13:14","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8010"},"modified":"2022-06-10T01:37:45","modified_gmt":"2022-06-10T01:37:45","slug":"ceramic-porous-foam-filter","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/ceramic-porous-foam-filter\/","title":{"rendered":"Filtro de espuma cer\u00e2mica porosa"},"content":{"rendered":"

O filtro de espuma cer\u00e2mica porosa \u00e9 uma malha de c\u00e9lula aberta com estrutura semelhante a uma esponja, destinada \u00e0 filtragem do alum\u00ednio fundido. Tem sido amplamente utilizado em todo o mundo. Um filtro de espuma cer\u00e2mica porosa \u00e9 um dispositivo de filtragem que utiliza espuma cer\u00e2mica como meio filtrante. O filtro de espuma cer\u00e2mica \u00e9 instalado na caixa de filtragem entre o forno est\u00e1tico e a mesa de fundi\u00e7\u00e3o. O alum\u00ednio fundido flui do forno est\u00e1tico para o cristalizador ap\u00f3s ser filtrado pela caixa de filtragem.<\/p>\n

As caracter\u00edsticas de fluxo da espuma cer\u00e2mica dependem das caracter\u00edsticas dos poros e do tamanho da placa cer\u00e2mica. Para uma placa filtrante de espuma cer\u00e2mica com dimens\u00f5es de 305 mm \u00d7 305 mm \u00d7 51 mm e um n\u00famero de orif\u00edcios de 30 orif\u00edcios\/pol., a taxa de filtra\u00e7\u00e3o \u00e9 de 173,0 kg\/s. Ao filtrar alum\u00ednio fundido, os principais par\u00e2metros de filtra\u00e7\u00e3o da espuma cer\u00e2mica s\u00e3o: precis\u00e3o de filtra\u00e7\u00e3o de 2 \u00b5m, efici\u00eancia de filtra\u00e7\u00e3o de 99,1%, altura manom\u00e9trica inicial de 50 a 150 mm e altura manom\u00e9trica efetiva de trabalho de 50 mm.<\/p>\n

Filtros cer\u00e2micos de espuma<\/a> apresentam as vantagens de alta precis\u00e3o de filtra\u00e7\u00e3o, alta efici\u00eancia de filtra\u00e7\u00e3o, peso leve, tamanho compacto, opera\u00e7\u00e3o e uso convenientes, al\u00e9m de boas condi\u00e7\u00f5es de trabalho. No entanto, as cer\u00e2micas de espuma s\u00e3o descartadas ap\u00f3s o uso e n\u00e3o podem ser regeneradas; al\u00e9m disso, sua textura \u00e9 relativamente fr\u00e1gil, pelo que deve-se evitar a mistura de fragmentos durante a instala\u00e7\u00e3o.<\/p>\n

O equipamento de filtragem CFF adota o princ\u00edpio da filtragem profunda. O filtro de espuma cer\u00e2mica \u00e9 um meio poroso, e o alum\u00ednio fundido flui nesse meio de acordo com o percurso definido. Para evitar a polui\u00e7\u00e3o secund\u00e1ria causada pela camada de \u00f3xido, o movimento no espa\u00e7o livre segue uma trajet\u00f3ria em camadas. As part\u00edculas s\u00e3o retidas por quatro m\u00e9todos: intercepta\u00e7\u00e3o direta, for\u00e7a inercial, movimento browniano e for\u00e7a gravitacional. As impurezas s\u00e3o gradualmente absorvidas pela parede e v\u00e3o obstruindo progressivamente a camada filtrante. A efici\u00eancia de filtra\u00e7\u00e3o aumenta com o aumento do tamanho das part\u00edculas de inclus\u00e3o e da espessura do filtro, e diminui com o aumento do tamanho dos poros e da vaz\u00e3o do metal.<\/p>\n

\"Filtro<\/p>\n

Preste aten\u00e7\u00e3o aos seguintes pontos ao utilizar filtros de espuma cer\u00e2mica na produ\u00e7\u00e3o:<\/strong><\/p>\n

Escolha o filtro de espuma cer\u00e2mica adequado. Ao escolher um filtro de espuma cer\u00e2mica, considere primeiro os requisitos de precis\u00e3o de filtragem. Na maioria dos casos, a escolha de um filtro de espuma cer\u00e2mica com 30 orif\u00edcios\/pol. \u00e9 satisfat\u00f3ria. Se o metal estiver particularmente sujo, um filtro de espuma cer\u00e2mica de 20 orif\u00edcios\/pol. pode ser usado para pr\u00e9-filtragem, a fim de evitar o entupimento prematuro do filtro de espuma cer\u00e2mica de 30 orif\u00edcios\/pol. No entanto, na produ\u00e7\u00e3o real, tamb\u00e9m existem filtros de 40 a 50 orif\u00edcios\/pol. para produtos com requisitos mais elevados. Em segundo lugar, deve-se levar em considera\u00e7\u00e3o a vaz\u00e3o de alum\u00ednio l\u00edquido por hora necess\u00e1ria para a velocidade de fundi\u00e7\u00e3o, a limpeza inicial da massa fundida, o maior teor de inclus\u00f5es no metal e a produtividade total do metal.<\/p>\n

Instale o filtro de espuma cer\u00e2mica corretamente. Geralmente, os filtros de espuma cer\u00e2mica s\u00e3o dispostos horizontalmente na caixa de filtragem, permitindo que a \u00e1gua de alum\u00ednio passe verticalmente para baixo. Quando se adota o m\u00e9todo de fundi\u00e7\u00e3o inferior, ele apresenta as vantagens de uma subida uniforme da \u00e1gua de alum\u00ednio; a aus\u00eancia de turbul\u00eancia ao atingir o filtro garante o funcionamento uniforme do mesmo e reduz o risco de canaliza\u00e7\u00e3o. Al\u00e9m disso, ao instalar a espuma cer\u00e2mica, a parte de montagem deve ser vedada com fibras refrat\u00e1rias para eliminar a possibilidade de qualquer desvio.<\/p>\n

Antes da filtragem, \u00e9 recomend\u00e1vel aquecer o filtro de espuma cer\u00e2mica a uma temperatura pr\u00f3xima \u00e0 temperatura de fus\u00e3o, para garantir que, quando o alum\u00ednio l\u00edquido fluir para dentro do filtro, nenhum metal se solidifique e bloqueie os orif\u00edcios.<\/p>","protected":false},"excerpt":{"rendered":"

The ceramic porous foam filter is an open-cell mesh with a sponge-like structure for filtering aluminum melt. It has been widely used worldwide. A ceramic…<\/p>","protected":false},"author":1,"featured_media":8011,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,138],"tags":[9231,9242,9240,9228,9229,9236,9239,9232,9230,9241,9238,9235,9244,9227,9233,9237,9243,9234],"class_list":["post-8010","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-foam-filter","category-seo","tag-ceramic-porous-foam-filter-for-rusal-alumina","tag-ceramic-porous-foam-filter-for-rusal-aluminium","tag-ceramic-porous-foam-filter-for-rusal-america","tag-ceramic-porous-foam-filter-for-rusal-company","tag-ceramic-porous-foam-filter-for-rusal-group","tag-ceramic-porous-foam-filter-for-rusal-guyana","tag-ceramic-porous-foam-filter-for-rusal-hong-kong","tag-ceramic-porous-foam-filter-for-rusal-marketing-gmbh","tag-ceramic-porous-foam-filter-for-rusal-news","tag-ceramic-porous-foam-filter-for-rusal-plc","tag-ceramic-porous-foam-filter-for-rusal-russia","tag-ceramic-porous-foam-filter-for-rusal-zug","tag-ceramic-porous-foam-filter-for-russian-aluminium","tag-ceramic-porous-foam-filter-for-russian-aluminum","tag-ceramic-porous-foam-filter-for-russian-companies-in-ireland","tag-ceramic-porous-foam-filter-for-uc-rusal-latest-news","tag-ceramic-porous-foam-filter-for-united-co-rusal","tag-ceramic-porous-foam-filter-for-united-company-rusal"],"yoast_head":"\nCeramic Porous Foam Filter -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The ceramic porous foam filter is an open-cell mesh with a sponge-like structure for filtering aluminum melt. 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