{"id":11596,"date":"2021-12-01T08:41:51","date_gmt":"2021-12-01T08:41:51","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11596"},"modified":"2021-12-01T08:42:39","modified_gmt":"2021-12-01T08:42:39","slug":"degasser-system","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/degasser-system\/","title":{"rendered":"Sistema de desgaseifica\u00e7\u00e3o"},"content":{"rendered":"

O sistema desgaseificador utiliza o rotor no estator para remover o g\u00e1s do alum\u00ednio fundido. O sistema desgaseificador de alum\u00ednio fundido geralmente utiliza um ou mais dispositivos rotativos do tipo rotor para injetar g\u00e1s inerte. O dispositivo de rotor girat\u00f3rio geralmente introduz g\u00e1s inerte (como o arg\u00f4nio) no metal fundido por meio de numerosas bolhas, e o rotor pode cisalhar e dispersar essas bolhas no metal fundido, de modo a saturar o metal fundido com o g\u00e1s inerte.<\/p>\n

Processo de funcionamento do sistema desgaseificador<\/strong><\/p>\n

O g\u00e1s inerte \u00e9 geralmente introduzido no metal fundido pr\u00f3ximo ao fundo do recipiente de conten\u00e7\u00e3o, e as bolhas se dispersam e sobem at\u00e9 a superf\u00edcie do metal fundido, adsorvendo o hidrog\u00eanio dissolvido nesse processo. A adi\u00e7\u00e3o de uma pequena quantidade de cloro pode ajudar a quebrar a liga\u00e7\u00e3o entre o alum\u00ednio fundido e as inclus\u00f5es, de modo que estas tenham maior probabilidade de aderir \u00e0s bolhas que sobem e serem levadas at\u00e9 a superf\u00edcie do alum\u00ednio fundido. Uma quantidade adicional de cloro pode ser adicionada ao g\u00e1s inerte para reagir quimicamente com os metais alcalinos que entram (como s\u00f3dio, l\u00edtio, c\u00e1lcio ou outros), formando sais de cloreto, que tamb\u00e9m flutuam at\u00e9 a superf\u00edcie do alum\u00ednio fundido.<\/p>\n

Geralmente, as inclus\u00f5es, os sais s\u00f3lidos e outros materiais que flutuam na superf\u00edcie do material fundido formam a chamada esc\u00f3ria, que pode ser retirada da superf\u00edcie e descartada como res\u00edduo.<\/p>\n

\"\"<\/p>\n

Geralmente, \u00e9 recomend\u00e1vel utilizar bolhas pequenas para maximizar a satura\u00e7\u00e3o do alum\u00ednio fundido e manter a superf\u00edcie do metal fundido tranquila, a fim de facilitar a flutua\u00e7\u00e3o e a reten\u00e7\u00e3o de inclus\u00f5es e sais na superf\u00edcie do metal fundido. Alcan\u00e7ar esses objetivos geralmente resulta em uma melhor separa\u00e7\u00e3o do alum\u00ednio fundido das esc\u00f3rias.<\/p>\n

O rotor girat\u00f3rio<\/a> pode, de fato, ser utilizado para cisalhar e ajudar a dispersar as bolhas e quaisquer aditivos no alum\u00ednio fundido. Para manter a superf\u00edcie da massa fundida relativamente est\u00e1tica, tamb\u00e9m \u00e9 necess\u00e1rio evitar o efeito das correntes parasitas causado pela rota\u00e7\u00e3o do rotor. O efeito das correntes parasitas tende a causar rachaduras superficiais, mistura de materiais na esc\u00f3ria com partes do alum\u00ednio fundido e, frequentemente, dificulta a remo\u00e7\u00e3o de gases e inclus\u00f5es indesejadas.<\/p>","protected":false},"excerpt":{"rendered":"

The degasser system uses the rotor in the stator to remove the gas from the molten aluminum. Molten aluminum degasser system usually uses one or…<\/p>","protected":false},"author":1,"featured_media":11597,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[13000,1241,4313],"class_list":["post-11596","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-degassing-unit","tag-degasser-system","tag-degassing-in-molten-aluminum","tag-metal-degassing"],"yoast_head":"\nDegasser System for Molten Aluminum -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Molten aluminum degasser system uses one or more rotating rotor devices to inject inert gas. 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