{"id":8962,"date":"2021-05-27T08:36:28","date_gmt":"2021-05-27T08:36:28","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8962"},"modified":"2021-05-27T08:36:28","modified_gmt":"2021-05-27T08:36:28","slug":"filters-for-molten-metal-foundry","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/filters-for-molten-metal-foundry\/","title":{"rendered":"Filtros para fundi\u00e7\u00e3o de metal fundido"},"content":{"rendered":"

Os filtros de espuma cer\u00e2mica para fundi\u00e7\u00f5es de metal fundido s\u00e3o utilizados como meio de separa\u00e7\u00e3o de impurezas s\u00f3lidas finamente divididas suspensas na massa fundida. Tamb\u00e9m foi proposto que o filtro de espuma cer\u00e2mica possa ser utilizado como meio filtrante, pois apresenta canais sinuosos muito pequenos, capazes de capturar e reter pequenas part\u00edculas em suspens\u00e3o.<\/p>\n

A remo\u00e7\u00e3o da esc\u00f3ria fora do forno \u00e9 feita principalmente por meio de filtros de espuma cer\u00e2mica para fundi\u00e7\u00e3o de metal fundido, que possuem uma rede multicamadas e orif\u00edcios multidimensionais, estando os orif\u00edcios interligados. Durante a filtragem, o alum\u00ednio fundido, carregando inclus\u00f5es, flui ao longo dos canais sinuosos e poros. Ao entrar em contato com a estrutura espumada da placa filtrante, ele \u00e9 diretamente bloqueado, adsorvido, depositado etc. Quando o metal fundido flui pelos poros, o canal da placa filtrante \u00e9 curvo; o metal fundido que flui pelo canal muda a dire\u00e7\u00e3o do fluxo, e as inclus\u00f5es colidem com a parede do orif\u00edcio e aderem firmemente a ela.<\/p>\n

A principal vantagem do sistema de filtragem com espuma cer\u00e2mica<\/a> \u00e9 que as inclus\u00f5es de esc\u00f3ria geradas durante o processo de transfer\u00eancia fora do forno sejam efetivamente eliminadas por meio da placa filtrante, bem como as inclus\u00f5es do tamanho de m\u00edcrons presentes no alum\u00ednio fundido \u2014 algo que a tecnologia convencional n\u00e3o consegue fazer. Ao mesmo tempo, como a placa filtrante ret\u00e9m as inclus\u00f5es finas e reduz o n\u00famero efetivo de n\u00facleos cristalinos no alum\u00ednio fundido, a nuclea\u00e7\u00e3o e o crescimento do alum\u00ednio fundido ocorrem nas partes super-resfriadas maiores, o que reduz o tempo de solidifica\u00e7\u00e3o e refina a estrutura.<\/p>\n

Reduzir o teor de hidrog\u00eanio no alum\u00ednio fundido. Os \u00e1tomos de hidrog\u00eanio podem ser adsorvidos em algumas inclus\u00f5es oxidadas, e essas inclus\u00f5es podem se tornar o n\u00facleo do crescimento de bolhas; por isso, as inclus\u00f5es s\u00e3o filtradas e o g\u00e1s presente nelas tamb\u00e9m \u00e9 removido. Por meio da adsor\u00e7\u00e3o, \u00e9 poss\u00edvel remover o teor de elementos nocivos (s\u00f3dio, pot\u00e1ssio) do alum\u00ednio fundido. De acordo com as diferentes necessidades dos clientes ou com as condi\u00e7\u00f5es do local, a sele\u00e7\u00e3o de uma placa filtrante adequada para garantir a qualidade do produto permite controlar eficazmente as inclus\u00f5es de esc\u00f3ria.<\/p>","protected":false},"excerpt":{"rendered":"

Ceramic foam filters for molten metal foundry are used as a means of separating finely divided solid impurities suspended in the melt. It has also…<\/p>","protected":false},"author":1,"featured_media":8964,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8962","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nFilters for Molten Metal Foundry,Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"Ceramic foam filters for molten metal foundry are used as a means of separating finely divided solid impurities suspended in the melt.\" \/>\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\/filters-for-molten-metal-foundry\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Filters for Molten Metal 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