{"id":8306,"date":"2021-03-31T06:40:05","date_gmt":"2021-03-31T06:40:05","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8306"},"modified":"2021-03-31T06:40:05","modified_gmt":"2021-03-31T06:40:05","slug":"choose-ceramic-foam-filters","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/choose-ceramic-foam-filters\/","title":{"rendered":"Escolha filtros de espuma cer\u00e2mica"},"content":{"rendered":"

Como escolher os filtros de espuma cer\u00e2mica adequados?<\/p>\n

H\u00e1 muitas impurezas e a qualidade da fundi\u00e7\u00e3o \u00e9 mediana. Pode-se utilizar um filtro de espuma cer\u00e2mica com malha mais larga, e um filtro grosso de tecido de vidro \u00e9 adicionado \u00e0 frente do filtro. Nesse caso, a fundi\u00e7\u00e3o semicont\u00ednua \u00e9 importante para a filtragem grosseira com tecido de vidro. Ela permite reter a esc\u00f3ria na abertura do olho do forno e lavar a esc\u00f3ria na piscina de lavagem do carro de fundi\u00e7\u00e3o, evitando o entupimento da placa filtrante.<\/p>\n

Os produtos fundidos de alum\u00ednio s\u00e3o de alta qualidade e utilizam-se um novo tipo de espuma cer\u00e2mica macroporosa.<\/p>\n

As especifica\u00e7\u00f5es do filtro de espuma cer\u00e2mica s\u00e3o determinadas pela vaz\u00e3o do alum\u00ednio fundido e pela produ\u00e7\u00e3o total.<\/p>\n

A cor \u00e9 pura e livre de impurezas, o que indica que o material \u00e9 uniforme; as m\u00e3os n\u00e3o ficam pegajosas, o que indica que a superf\u00edcie n\u00e3o foi pulverizada com adesivo, o que n\u00e3o causar\u00e1 polui\u00e7\u00e3o secund\u00e1ria.<\/p>\n

Ao comprar um filtro de espuma cer\u00e2mica<\/a>, avalie cuidadosamente a \u00e1rea superficial espec\u00edfica efetiva ou o c\u00e1lculo da porosidade da espuma. \u00c9 poss\u00edvel observar o estado de homogeneiza\u00e7\u00e3o da superf\u00edcie da malha da placa filtrante e, em seguida, observar o estado de homogeneiza\u00e7\u00e3o da malha na se\u00e7\u00e3o transversal. Se poss\u00edvel, a porosidade pode ser calculada pelo m\u00e9todo de drenagem. A malha tridimensional \u00e9 uniforme e a porosidade \u00e9 relativamente grande, o que caracteriza uma excelente placa filtrante de cer\u00e2mica.<\/p>\n

\"\"<\/p>\n

Escolha filtros de espuma cer\u00e2mica<\/p>\n

A transmit\u00e2ncia refere-se \u00e0 \u00e1rea efetiva de filtragem do produto de filtro cer\u00e2mico de espuma. Quanto maior for a transmit\u00e2ncia da luz, menor ser\u00e1 o n\u00famero de orif\u00edcios cegos e mais eficazes ser\u00e3o os orif\u00edcios de filtragem (orif\u00edcios de cavidade), melhor ser\u00e1 o efeito de filtragem.<\/p>\n

Coloque o filtro de espuma cer\u00e2mica a ser inspecionado sobre uma caixa de luz equipada com uma l\u00e2mpada incandescente de 200 W e utilize uma placa quadrada de pl\u00e1stico transparente, com dimens\u00f5es uniformes de 5,0 \u00d7 5,0 mm, para medir a \u00e1rea da superf\u00edcie principal do filtro, a fim de realizar c\u00e1lculos e testes. A transmit\u00e2ncia da luz da placa do filtro \u00e9 utilizada para determinar a transmit\u00e2ncia da luz da placa do filtro. Nesta norma, a transmit\u00e2ncia (propor\u00e7\u00e3o de orif\u00edcios) da placa do filtro \u00e9 especificada como 95% ou mais.<\/p>\n

A porosidade \u00e9 a porcentagem do volume total das cavidades do produto de placa filtrante em rela\u00e7\u00e3o ao volume total do pr\u00f3prio produto. A porosidade determina a capacidade de filtra\u00e7\u00e3o do filtro de espuma cer\u00e2mica por unidade de volume. Quanto maior a porosidade, maior o fluxo de filtra\u00e7\u00e3o da placa filtrante e mais elevada a capacidade de filtra\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"

How to choose the correct ceramic foam filters? There are many impurities and the casting quality is average. A ceramic foam filter with a larger…<\/p>","protected":false},"author":1,"featured_media":8307,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8306","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nChoose Ceramic Foam Filters with fewer blind holes<\/title>\n<meta name=\"description\" content=\"Choose Ceramic Foam Filters: The higher the light transmittance, the fewer blind holes the more effective, the better the filter effect.\" \/>\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\/choose-ceramic-foam-filters\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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