{"id":10092,"date":"2021-08-27T06:13:14","date_gmt":"2021-08-27T06:13:14","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10092"},"modified":"2021-08-26T06:29:34","modified_gmt":"2021-08-26T06:29:34","slug":"melt-purification-and-modification-treatment","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/melt-purification-and-modification-treatment\/","title":{"rendered":"Purifica\u00e7\u00e3o por fus\u00e3o e tratamento de modifica\u00e7\u00e3o"},"content":{"rendered":"

Os m\u00e9todos de purifica\u00e7\u00e3o e modifica\u00e7\u00e3o da fus\u00e3o podem afetar significativamente as propriedades da liga, especialmente a tenacidade e a condutividade el\u00e9trica. Pesquisar e desenvolver diversas tecnologias avan\u00e7adas de purifica\u00e7\u00e3o e modifica\u00e7\u00e3o da fus\u00e3o, com foco na solu\u00e7\u00e3o do problema da baixa qualidade metal\u00fargica dos lingotes.<\/p>\n

Com o desenvolvimento da ind\u00fastria automotiva, cada vez mais pe\u00e7as fundidas de liga de alum\u00ednio s\u00e3o utilizadas, e os requisitos para essas pe\u00e7as tamb\u00e9m est\u00e3o se tornando cada vez mais exigentes. Al\u00e9m dos requisitos para garantir a composi\u00e7\u00e3o qu\u00edmica, as propriedades mec\u00e2nicas e a precis\u00e3o dimensional, as pe\u00e7as fundidas de liga de alum\u00ednio n\u00e3o podem apresentar defeitos de fundi\u00e7\u00e3o, como buracos de contra\u00e7\u00e3o, poros e buracos de esc\u00f3ria. A purifica\u00e7\u00e3o do alum\u00ednio fundido \u00e9 uma das medidas para garantir produtos de liga de alum\u00ednio de alta qualidade e tamb\u00e9m \u00e9 o principal m\u00e9todo para melhorar a qualidade geral das ligas de alum\u00ednio. O efeito do refinamento do alum\u00ednio fundido tem uma influ\u00eancia importante na forma\u00e7\u00e3o de poros, cavidades de contra\u00e7\u00e3o e inclus\u00f5es, e afeta diretamente as propriedades f\u00edsicas e mec\u00e2nicas das pe\u00e7as fundidas de liga de alum\u00ednio. Sem alum\u00ednio fundido de alta qualidade, mesmo que o processamento subsequente seja avan\u00e7ado, os defeitos sempre existir\u00e3o no produto uma vez que ocorram, e pe\u00e7as fundidas de alta qualidade s\u00e3o dif\u00edceis de obter. Portanto, devemos prestar aten\u00e7\u00e3o aos gases e inclus\u00f5es no alum\u00ednio fundido e tomar medidas para remov\u00ea-los.<\/p>\n

\"Filtragem<\/p>\n

Atualmente, os m\u00e9todos de purifica\u00e7\u00e3o da massa fundida incluem: repouso da massa fundida no forno + tratamento com solvente, tratamento com g\u00e1s inerte + cloro, pulveriza\u00e7\u00e3o de p\u00f3 e tratamento de refinamento. Os m\u00e9todos de purifica\u00e7\u00e3o fora do forno incluem desgaseifica\u00e7\u00e3o online<\/a> tratamento, CFF (Filtro de espuma cer\u00e2mica<\/a>) m\u00e9todo de filtragem, etc.<\/p>\n

O sistema de purifica\u00e7\u00e3o online de alum\u00ednio fundido da nossa empresa possui um conceito inovador e uma estrutura exclusiva, al\u00e9m de apresentar melhor desempenho na remo\u00e7\u00e3o de hidrog\u00eanio e de esc\u00f3ria. A taxa de remo\u00e7\u00e3o de hidrog\u00eanio pode chegar a mais de 70%, e \u00e9 poss\u00edvel remover 99% das inclus\u00f5es com tamanho de part\u00edcula superior a 20um. Trata-se da tecnologia mais avan\u00e7ada de refino de alum\u00ednio fundido, capaz de fornecer lingotes de alta qualidade em grande escala para a produ\u00e7\u00e3o de chapas grossas de liga de alum\u00ednio de alto desempenho.<\/p>\n

Al\u00e9m disso, os m\u00e9todos de adi\u00e7\u00e3o de oligoelementos e modificadores de Sr, bem como sua intera\u00e7\u00e3o com outros elementos nas ligas de alum\u00ednio, tamb\u00e9m merecem aten\u00e7\u00e3o. Isso porque eles afetam a forma\u00e7\u00e3o de compostos prim\u00e1rios de gr\u00e3os grossos no lingote, o que, por sua vez, influencia sua morfologia e distribui\u00e7\u00e3o na estrutura, al\u00e9m de ter um impacto significativo nas propriedades da liga.<\/p>","protected":false},"excerpt":{"rendered":"

Melt purification and modification treatment methods can significantly affect the properties of the alloy, especially the toughness and electrical conductivity. 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