{"id":9973,"date":"2021-08-19T07:03:55","date_gmt":"2021-08-19T07:03:55","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9973"},"modified":"2022-03-21T06:42:20","modified_gmt":"2022-03-21T06:42:20","slug":"deep-bed-filter-device","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/deep-bed-filter-device\/","title":{"rendered":"Dispositivo de filtragem de leito profundo"},"content":{"rendered":"

Na sa\u00edda do dispositivo de filtragem de leito profundo, a qualidade da massa fundida \u00e9 melhor ap\u00f3s uma s\u00e9rie de tratamentos em linha, como desgaseifica\u00e7\u00e3o e filtragem. A amostra de esc\u00f3ria est\u00e1 relativamente limpa, e h\u00e1 um pequeno n\u00famero de inclus\u00f5es na interface entre o filtro e a massa fundida.<\/p>\n

Na fase inicial de sele\u00e7\u00e3o do elenco do filtro de leito profundo<\/a>, a capacidade de reter inclus\u00f5es \u00e9 relativamente fraca; \u00e0 medida que a tonelagem de filtragem aumenta, o n\u00famero de inclus\u00f5es na massa fundida diminui gradualmente e a efici\u00eancia da filtragem aumenta.<\/p>\n

Na esc\u00f3ria na sa\u00edda do filtro de leito profundo, foram encontradas diversas inclus\u00f5es de pequeno porte, e essas inclus\u00f5es correm o risco de serem incorporadas \u00e0 massa fundida durante o processo de fundi\u00e7\u00e3o. A presen\u00e7a de inclus\u00f5es nas esc\u00f3rias na entrada e na sa\u00edda indica a necessidade de manuten\u00e7\u00e3o e limpeza regulares durante o uso do filtro de leito profundo.<\/p>\n

\"Dispositivo<\/p>\n

O dispositivo de filtragem de leito profundo \u00e9 composto por v\u00e1rias camadas de esferas de alumina e uma camada de cascalho de alumina de tamanho adequado, dispostas de maneira espec\u00edfica, e a espessura do meio filtrante chega a 500 mm. O tamanho e o m\u00e9todo de empilhamento das esferas e do cascalho de alumina devem ser ajustados de acordo com as diferentes ligas. As inclus\u00f5es s\u00e3o adsorvidas principalmente na superf\u00edcie do meio de quatro maneiras: intercepta\u00e7\u00e3o direta, movimento browniano, for\u00e7a inercial e precipita\u00e7\u00e3o gravitacional.<\/p>\n

A liga de alum\u00ednio 3104 precisa ser processada por lamina\u00e7\u00e3o a quente, lamina\u00e7\u00e3o a frio e estampagem profunda no processo de produ\u00e7\u00e3o de latas, o que exige alta qualidade da massa fundida e dos lingotes. Na produ\u00e7\u00e3o, geralmente s\u00e3o utilizados filtros mais avan\u00e7ados para a purifica\u00e7\u00e3o da massa fundida. Para o processamento, o filtro de leito profundo \u00e9 um dos filtros mais comumente utilizados.<\/p>\n

Essa tecnologia de filtragem profunda tem sido reconhecida no setor de fundi\u00e7\u00e3o e \u00e9 capaz de atender \u00e0s necessidades de produtos de ponta com requisitos de qualidade mais elevados. O filtro de leito profundo apresenta as vantagens de baixo custo de produ\u00e7\u00e3o, ampla \u00e1rea de filtragem e alta efici\u00eancia de filtragem. Para impurezas maiores que 5 \u00b5m, a efici\u00eancia de filtragem \u00e9 superior a 90%. A forma de utilizar os filtros de leito profundo de maneira eficiente afeta diretamente a qualidade do produto, a efici\u00eancia da produ\u00e7\u00e3o e o custo.<\/p>","protected":false},"excerpt":{"rendered":"

At the deep bed filter device outlet, the melt’s quality is better after a series of online treatments such as degassing and filtering. 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