{"id":7145,"date":"2020-12-22T09:30:27","date_gmt":"2020-12-22T09:30:27","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7145"},"modified":"2020-12-22T09:30:27","modified_gmt":"2020-12-22T09:30:27","slug":"aluminum-degasser","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-degasser\/","title":{"rendered":"Desgaseificador de alum\u00ednio"},"content":{"rendered":"

O desgaseificador de alum\u00ednio \u00e9 capaz de remover o hidrog\u00eanio do alum\u00ednio fundido. O processo de desgaseifica\u00e7\u00e3o do alum\u00ednio tamb\u00e9m pode remover outras subst\u00e2ncias nocivas, como inclus\u00f5es qu\u00edmicas ou subst\u00e2ncias alcalinas. O equipamento de desgaseifica\u00e7\u00e3o atende \u00e0 produ\u00e7\u00e3o de produtos de alum\u00ednio com requisitos t\u00e9cnicos mais exigentes. O desgaseificador de alum\u00ednio est\u00e1 localizado entre o forno e a m\u00e1quina de fundi\u00e7\u00e3o, e sua principal fun\u00e7\u00e3o \u00e9 remover o hidrog\u00eanio e outros res\u00edduos.<\/p>\n

O hidrog\u00eanio est\u00e1 presente na atmosfera e se dissolve facilmente no alum\u00ednio fundido. A presen\u00e7a de hidrog\u00eanio no alum\u00ednio fundido pode causar manchas brancas ou poros, o que pode afetar negativamente o produto final. Por exemplo, esses produtos de alum\u00ednio podem n\u00e3o atingir propriedades mec\u00e2nicas ou f\u00edsicas aceit\u00e1veis e podem prejudicar a resist\u00eancia \u00e0 tra\u00e7\u00e3o. O hidrog\u00eanio e as inclus\u00f5es tamb\u00e9m podem causar trincas por fadiga no material.<\/p>\n

Inclus\u00f5es s\u00e3o corpos estranhos s\u00f3lidos, l\u00edquidos ou gasosos envoltos por alum\u00ednio. As inclus\u00f5es met\u00e1licas e n\u00e3o met\u00e1licas devem ser removidas, pois tamb\u00e9m podem prejudicar as propriedades mec\u00e2nicas do produto. Na usinagem e no polimento, as inclus\u00f5es tamb\u00e9m podem aumentar o desgaste das ferramentas.<\/p>\n

\"Desgaseamento<\/p>\n

O desgaseificador de alum\u00ednio \u00e9 instalado entre o forno de reten\u00e7\u00e3o e a m\u00e1quina de fundi\u00e7\u00e3o. O nitrog\u00eanio \u00e9 injetado na liga de alum\u00ednio fundida e, em seguida, o g\u00e1s \u00e9 fragmentado por um rotor girat\u00f3rio de grafite dentro de um tanque de desgaseifica\u00e7\u00e3o. Assim, forma-se um grande n\u00famero de bolhas dispersas, de modo que a liga de alum\u00ednio l\u00edquida entre em contato total com o nitrog\u00eanio no tanque de processamento. De acordo com o princ\u00edpio da diferen\u00e7a de press\u00e3o do ar e da adsor\u00e7\u00e3o superficial, as bolhas absorvem hidrog\u00eanio e esc\u00f3ria oxidada. Em seguida, as bolhas sobem \u00e0 superf\u00edcie do material fundido, formando uma esc\u00f3ria. Depois, a liga de alum\u00ednio fundida flui da sa\u00edda da unidade de desgaseifica\u00e7\u00e3o para a m\u00e1quina de fundi\u00e7\u00e3o. A liga de alum\u00ednio l\u00edquida entra continuamente no dispositivo de desgaseifica\u00e7\u00e3o, e o nitrog\u00eanio \u00e9 injetado continuamente. Por meio desse processo de purifica\u00e7\u00e3o, o desgaseificador consegue atingir o objetivo de purificar a liga de alum\u00ednio.<\/p>\n

Os trabalhadores devem desligar o elemento de aquecimento antes que o alum\u00ednio fundido entre no equipamento de desgaseifica\u00e7\u00e3o<\/a>. Quando a temperatura do aquecedor se aproxima da do alum\u00ednio fundido, injeta-se g\u00e1s inerte no rotor e, em seguida, o alum\u00ednio fundido \u00e9 vertido na caixa de desgaseifica\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"

The aluminum degasser can remove hydrogen from molten aluminum. The aluminum degassing process can also remove other harmful substances, such as chemical inclusions or alkaline…<\/p>","protected":false},"author":1,"featured_media":7146,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-7145","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"\nAluminum Degasser used to remove hydrogen and inclusions<\/title>\n<meta name=\"description\" content=\"The aluminum degasser can remove hydrogen from molten aluminum. 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