{"id":4693,"date":"2020-09-11T13:30:38","date_gmt":"2020-09-11T13:30:38","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=4693"},"modified":"2020-09-11T13:30:38","modified_gmt":"2020-09-11T13:30:38","slug":"aluminum-melt-treatment","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-melt-treatment\/","title":{"rendered":"Tratamento do alum\u00ednio fundido"},"content":{"rendered":"

A qualidade do alum\u00ednio fundido determina, em grande medida, a qualidade dos produtos finais. Em particular, o alum\u00ednio l\u00edquido eletrol\u00edtico apresenta maior teor de hidrog\u00eanio, mais inclus\u00f5es e n\u00facleos cristalinos menos ativos. Se o processo n\u00e3o for adequado, surgir\u00e3o muitos problemas de qualidade, como maior porosidade, mais inclus\u00f5es de esc\u00f3ria, gr\u00e3os grosseiros e assim por diante. \u00c9 de grande import\u00e2ncia melhorar a qualidade do alum\u00ednio fundido por meio do uso de tecnologia avan\u00e7ada de tratamento do alum\u00ednio fundido.<\/p>\n

O tratamento do alum\u00ednio fundido inclui o refinamento do gr\u00e3o, a desgaseifica\u00e7\u00e3o e a filtragem.<\/p>\n

Existem duas maneiras de refinar o gr\u00e3o: uma \u00e9 adicionar a liga-m\u00e3e de Al-Ti no forno e a outra \u00e9 adicionar o fio de Al-Ti-B fora do forno. A adi\u00e7\u00e3o da liga-m\u00e3e de Al-Ti no forno n\u00e3o s\u00f3 envolve uma grande quantidade de liga-m\u00e3e, como tamb\u00e9m o efeito de refinamento do gr\u00e3o diminui com o prolongamento do tempo de perman\u00eancia da massa fundida no forno, podendo at\u00e9 mesmo perder o efeito de refinamento do gr\u00e3o.<\/p>\n

O tratamento em linha fora do forno n\u00e3o s\u00f3 permite superar as defici\u00eancias mencionadas acima, como tamb\u00e9m reduz a quantidade de liga-m\u00e3e em mais da metade, al\u00e9m de proporcionar um tamanho de gr\u00e3o fino e uniforme. Desgaseamento de refino<\/a> pode ser dividido em tratamento no forno e tratamento externo. A tecnologia de tratamento em linha fora do forno n\u00e3o s\u00f3 reduz ou evita a polui\u00e7\u00e3o secund\u00e1ria da massa fundida, como tamb\u00e9m melhora a qualidade do produto e reduz a intensidade de trabalho dos oper\u00e1rios.<\/p>\n

\"Tratamento<\/p>\n

A filtragem \u00e9 o m\u00e9todo mais eficaz e confi\u00e1vel para remover as inclus\u00f5es n\u00e3o met\u00e1licas da liga de alum\u00ednio fundida. Existem a filtragem por malha, filtro cer\u00e2mico de espuma<\/a> filtra\u00e7\u00e3o e filtra\u00e7\u00e3o por tubos cer\u00e2micos microporosos. Atualmente, a filtra\u00e7\u00e3o por placas cer\u00e2micas espumadas \u00e9 amplamente utilizada.<\/p>\n

Atualmente, a tecnologia de tratamento de alum\u00ednio fundido evoluiu da desgaseifica\u00e7\u00e3o ou filtragem isoladas para uma tecnologia de tratamento cont\u00ednuo que combina desgaseifica\u00e7\u00e3o e filtragem. Na mesma unidade de tratamento, est\u00e3o dispon\u00edveis tanto a fun\u00e7\u00e3o de desgaseifica\u00e7\u00e3o quanto a de filtragem, e as duas fun\u00e7\u00f5es s\u00e3o realizadas continuamente ao mesmo tempo. A fim de melhorar a qualidade dos materiais de alum\u00ednio, os materiais de alta qualidade s\u00e3o frequentemente tratados tanto dentro quanto fora do forno.<\/p>","protected":false},"excerpt":{"rendered":"

The quality of aluminum melt determines the quality of final products to a great extent. In particular, there are hydrogen content, more inclusions, and less…<\/p>","protected":false},"author":1,"featured_media":4694,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[4684],"class_list":["post-4693","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-melt-treatment"],"yoast_head":"\nAluminum Melt Treatment Technology | Degassing Refining<\/title>\n<meta name=\"description\" content=\"Aluminum melt treatment includes grain refinement, degassing and filtration. 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