{"id":3223,"date":"2020-07-31T10:10:17","date_gmt":"2020-07-31T10:10:17","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=3223"},"modified":"2020-10-19T08:44:05","modified_gmt":"2020-10-19T08:44:05","slug":"liquid-aluminum-purification","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/liquid-aluminum-purification\/","title":{"rendered":"Purifica\u00e7\u00e3o de alum\u00ednio l\u00edquido"},"content":{"rendered":"

A purifica\u00e7\u00e3o do alum\u00ednio l\u00edquido torna-se uma etapa importante na fundi\u00e7\u00e3o de ligas de alum\u00ednio. Com o desenvolvimento da ci\u00eancia e da tecnologia modernas e a demanda da ind\u00fastria contempor\u00e2nea, a ci\u00eancia dos materiais \u2014 considerada um dos tr\u00eas pilares da ind\u00fastria do s\u00e9culo XXI \u2014 est\u00e1 evoluindo na dire\u00e7\u00e3o de alta resist\u00eancia espec\u00edfica, alta resist\u00eancia e tenacidade. H\u00e1 muito tempo, as ligas de alum\u00ednio fundido t\u00eam sido amplamente utilizadas na ind\u00fastria devido ao seu baixo pre\u00e7o, leveza e desempenho confi\u00e1vel.<\/p>\n

No entanto, devido \u00e0 contra\u00e7\u00e3o por solidifica\u00e7\u00e3o das ligas de alum\u00ednio fundidas e ao hidrog\u00eanio facilmente sol\u00favel, elas inevitavelmente cont\u00eam um certo n\u00famero de defeitos, como vazios, \u00f3xidos e inclus\u00f5es n\u00e3o met\u00e1licas. Esses defeitos exercem grande influ\u00eancia nas propriedades mec\u00e2nicas dos componentes. Por exemplo, uma fra\u00e7\u00e3o volum\u00e9trica de 1% pode causar fadiga no 50%.<\/p>\n

\"Purifica\u00e7\u00e3o<\/p>\n

Purifica\u00e7\u00e3o de alum\u00ednio l\u00edquido<\/h2>\n

Depois que o alum\u00ednio l\u00edquido \u00e9 descarregado do forno, ele \u00e9 desgaseificado em linha, filtrado e, em seguida, entra no molde para iniciar a fundi\u00e7\u00e3o cont\u00ednua. A desgaseifica\u00e7\u00e3o em linha \u00e9 realizada por meio de um dispositivo rotativo de desgaseifica\u00e7\u00e3o. O processo de purifica\u00e7\u00e3o baseia-se no princ\u00edpio da purifica\u00e7\u00e3o por adsor\u00e7\u00e3o. O g\u00e1s de refino \u00e9 injetado atrav\u00e9s do rotor. Com a ajuda do bocal girat\u00f3rio, pequenas bolhas s\u00e3o distribu\u00eddas uniformemente e entram em contato total com a massa fundida na c\u00e2mara de rea\u00e7\u00e3o para purific\u00e1-la. O g\u00e1s de refino pode ser nitrog\u00eanio ou uma mistura de nitrog\u00eanio e cloro.<\/p>\n

A principal forma de remover esc\u00f3rias por filtra\u00e7\u00e3o consiste em purificar a massa fundida por meio do efeito de bloqueio do meio filtrante, da for\u00e7a de atrito ou da press\u00e3o do fluido, de modo a fazer com que as impurezas se depositem ou fiquem retidas. A linha de produ\u00e7\u00e3o adota o sistema CFF de dois est\u00e1gios filtro cer\u00e2mico de espuma<\/a> placa, e a caixa do filtro est\u00e1 equipada com 2 conjuntos de placas de filtro paralelas. A placa de filtro \u00e9 uma placa de filtro cer\u00e2mica de espuma composta de dupla camada com 30\/50 ppi. A porosidade da placa filtrante superior \u00e9 de 30 ppi, e a porosidade da placa filtrante inferior \u00e9 de 50 ppi. O filtro cer\u00e2mico de espuma CFF pode remover efetivamente inclus\u00f5es de esc\u00f3ria com di\u00e2metros superiores a 20 \u00b5m, e a efici\u00eancia de filtragem pode atingir 751 TP3T.<\/p>","protected":false},"excerpt":{"rendered":"

Liquid Aluminum Purification becomes one important step for casting aluminum alloy. With the development of modern science and technology and the demand of modern industry,…<\/p>","protected":false},"author":1,"featured_media":3230,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[1776],"class_list":["post-3223","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-liquid-aluminum-purification"],"yoast_head":"\nLiquid Aluminum Purification - CFF Foam Ceramic Fltering<\/title>\n<meta name=\"description\" content=\"Liquid aluminum purification becomes one important step. 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