{"id":12317,"date":"2022-01-18T06:27:39","date_gmt":"2022-01-18T06:27:39","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=12317"},"modified":"2022-01-18T06:27:39","modified_gmt":"2022-01-18T06:27:39","slug":"liquid-aluminum-degassing-device","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/liquid-aluminum-degassing-device\/","title":{"rendered":"Dispositivo de desgaseifica\u00e7\u00e3o de alum\u00ednio l\u00edquido"},"content":{"rendered":"

O dispositivo de desgaseifica\u00e7\u00e3o de alum\u00ednio l\u00edquido inclui um corpo de caixa, uma tampa que cobre o corpo da caixa e um rotor. O rotor se estende para dentro da caixa atrav\u00e9s do fundo da mesma. A extremidade superior do rotor est\u00e1 conectada coaxialmente \u00e0 plataforma girat\u00f3ria, e o interior do rotor e da plataforma girat\u00f3ria s\u00e3o ocos e est\u00e3o em comunica\u00e7\u00e3o. Entre eles, o formato da plataforma girat\u00f3ria varia de uma estrutura tradicional em forma de disco a uma estrutura aerodin\u00e2mica com cabe\u00e7a redonda.<\/p>\n

Os rotores e as plataformas girat\u00f3rias podem transformar o fluxo de ar ascendente tradicional, quase reto, em m\u00faltiplos fluxos de ar ascendentes em espiral, resultando em uma dispers\u00e3o mais uniforme das bolhas finas de ar no alum\u00ednio fundido e, consequentemente, em uma melhor desgaseifica\u00e7\u00e3o.<\/p>\n

A verifica\u00e7\u00e3o experimental mostra que as bolhas geradas pela plataforma girat\u00f3ria s\u00e3o pequenas e distribu\u00eddas uniformemente, o que proporciona o efeito mais eficaz de desgaseifica\u00e7\u00e3o e remo\u00e7\u00e3o de esc\u00f3ria.<\/p>\n

O material da plataforma girat\u00f3ria \u00e9 nitreto de sil\u00edcio ou grafite. A velocidade de rota\u00e7\u00e3o da plataforma girat\u00f3ria pode ser alterada por meio de um motor de frequ\u00eancia vari\u00e1vel, e a velocidade pode ser ajustada na faixa de 0 a 900 rpm para atender \u00e0s necessidades do processo.<\/p>\n

A chave para a desgaseifica\u00e7\u00e3o de Equipamentos de desgaseifica\u00e7\u00e3o<\/a> \u00e9 que o rotor consegue quebrar as grandes bolhas de g\u00e1s inerte em pequenas bolhas e fazer com que elas se difundam por todo o metal fundido.<\/p>\n

\"Dispositivo<\/p>\n

Ao reduzir o di\u00e2metro das bolhas, a \u00e1rea de superf\u00edcie do g\u00e1s inerte aumenta acentuadamente, de modo que mais superf\u00edcies do g\u00e1s inerte entram em contato com o hidrog\u00eanio e as impurezas presentes no metal fundido; assim, o hidrog\u00eanio e as impurezas s\u00e3o removidos do alum\u00ednio fundido \u00e0 medida que as bolhas sobem.<\/p>\n

O controle do fluxo do g\u00e1s inerte que entra no alum\u00ednio fundido pode ser ajustado de acordo com o volume do metal l\u00edquido a ser processado, e a velocidade da haste girat\u00f3ria e do rotor pode ser ajustada para gerar bolhas de tamanho adequado, a fim de facilitar a difus\u00e3o do g\u00e1s inerte.<\/p>\n

Tanto o arg\u00f4nio quanto o nitrog\u00eanio podem ser utilizados como gases inertes para desgaseificar o alum\u00ednio fundido. A pureza do g\u00e1s inerte deve ser superior a 99,99%.<\/p>\n

O dispositivo de desgaseifica\u00e7\u00e3o de alum\u00ednio l\u00edquido serve para injetar g\u00e1s inerte no alum\u00ednio fundido a fim de remover o hidrog\u00eanio. Al\u00e9m disso, a desgaseifica\u00e7\u00e3o tamb\u00e9m \u00e9 considerada uma forma muito eficaz de fazer com que as impurezas subam \u00e0 superf\u00edcie.<\/p>\n

Devido \u00e0 alta press\u00e3o de vapor do hidrog\u00eanio, o hidrog\u00eanio dissolvido se difunde para o g\u00e1s presente no alum\u00ednio l\u00edquido injetado. Teoricamente, quando uma inclus\u00e3o com di\u00e2metro de 10 m\u00edcrons entra em contato com uma bolha, ela se adsorve \u00e0 bolha e flutua at\u00e9 a superf\u00edcie do l\u00edquido.<\/p>","protected":false},"excerpt":{"rendered":"

Liquid Aluminum Degassing Device includes a box body, a box cover covering the box body and a rotor. The rotor extends into the box through…<\/p>","protected":false},"author":1,"featured_media":12318,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-12317","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-degassing-unit"],"yoast_head":"\nLiquid Aluminum Degassing Device -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Liquid Aluminum Degassing Device includes a box body, a box cover covering the box body and a rotor. 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