{"id":9276,"date":"2021-06-23T03:45:37","date_gmt":"2021-06-23T03:45:37","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9276"},"modified":"2021-06-23T03:46:00","modified_gmt":"2021-06-23T03:46:00","slug":"ceramic-foam-filter-pore-size","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/ceramic-foam-filter-pore-size\/","title":{"rendered":"Tamanho dos poros do filtro de espuma cer\u00e2mica"},"content":{"rendered":"<p>O tamanho dos poros do filtro de espuma cer\u00e2mica deve ser selecionado de acordo com a natureza do metal fundido a ser filtrado. Para filtrar metais viscosos, espessos, com baixa fluidez e part\u00edculas de impurezas maiores, deve-se selecionar um filtro com poros maiores.<\/p>\n<p><strong>O princ\u00edpio geral para a sele\u00e7\u00e3o do tamanho dos poros do filtro de espuma cer\u00e2mica:<\/strong><\/p>\n<ul>\n<li>O tamanho de poro de 10 PPI pode ser utilizado para ferro d\u00factil, ferro fundido cinzento de grande porte e pe\u00e7as fundidas de a\u00e7o.<\/li>\n<li>O tamanho de poro de 20 PPI pode ser utilizado para ferro male\u00e1vel, ferro cinzento de pequenas dimens\u00f5es e metais n\u00e3o ferrosos.<\/li>\n<li><a href=\"http:\/\/www.alalloycasting.com\/pt\/30-ppi-filter\/\">Filtros de 30 PPI<\/a> s\u00e3o utilizados para pe\u00e7as fundidas de ligas de cobre e de alum\u00ednio.<\/li>\n<\/ul>\n<p>Para filtrar metal l\u00edquido com boa fluidez e dilu\u00eddo, deve-se selecionar um filtro de espuma cer\u00e2mica com poros de tamanho menor. Se o tamanho dos poros for muito grande, o filtro n\u00e3o ser\u00e1 capaz de realizar a filtragem; se for muito pequeno, isso poder\u00e1 causar o entupimento prematuro do filtro, o que far\u00e1 com que ele pare no meio do processo ou at\u00e9 mesmo deixe de filtrar.<\/p>\n<p>A vaz\u00e3o de cada filtro deve ser levada em considera\u00e7\u00e3o de forma completa no processo de filtragem. Se a vaz\u00e3o for muito baixa, o filtro n\u00e3o conseguir\u00e1 atender aos requisitos de filtragem do metal fundido, resultando em uma vaz\u00e3o insuficiente do filtro. Uma vaz\u00e3o excessiva causar\u00e1 perda de receita e aumentar\u00e1 os custos de produ\u00e7\u00e3o.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8818\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/05\/Molten-Alu-Purification-Treatment.jpg\" alt=\"Tratamento de purifica\u00e7\u00e3o de alum\u00ednio fundido\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/05\/Molten-Alu-Purification-Treatment.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/05\/Molten-Alu-Purification-Treatment-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Filtros de espuma cer\u00e2mica com o mesmo tamanho de poro, ao filtrarem diferentes metais fundidos, apresentam capacidades de filtragem diferentes. Tomando como exemplo um filtro com tamanho de poro de 10 ppi, a capacidade de filtragem por unidade de \u00e1rea \u00e9: 2,0~4,0 kg\/cm\u00b2 para ferro fundido cinzento e nodular, 1,0~2,0 kg\/cm\u00b2 para ferro fundido, 1,5 a 3,0 kg\/cm\u00b2 para a\u00e7o carbono comum e a\u00e7o de baixa liga; 2,0 a 4,0 kg\/cm\u00b2 para a\u00e7o inoxid\u00e1vel e a\u00e7o com alto teor de mangan\u00eas.<\/p>\n<p>Quando a malha diminui em 10 PPI, o <a href=\"http:\/\/www.alalloycasting.com\/pt\/ceramic-foam-filter-filtration\/\">filtra\u00e7\u00e3o por filtro de espuma cer\u00e2mica<\/a> A capacidade diminui em 20%~30%. Desde que se calcule a \u00e1rea \u00fatil do filtro e, em seguida, se multiplique esse valor pela capacidade de filtragem por unidade de \u00e1rea, \u00e9 poss\u00edvel obter a quantidade total de metal fundido filtrado por cada filtro.<\/p>","protected":false},"excerpt":{"rendered":"<p>The ceramic foam filter pore size should be selected according to the nature of the molten metal to be filtered. To filter viscous, thick, poor&hellip;<\/p>","protected":false},"author":1,"featured_media":9280,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-9276","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-foam-filter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ceramic Foam Filter Pore Size for Molten Metal Filtration<\/title>\n<meta name=\"description\" content=\"The ceramic foam filter pore size should be selected according to the nature of the molten metal to be filtered. 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