{"id":11459,"date":"2021-11-25T09:20:28","date_gmt":"2021-11-25T09:20:28","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11459"},"modified":"2021-11-25T09:20:28","modified_gmt":"2021-11-25T09:20:28","slug":"aluminium-liquid-degasser","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminium-liquid-degasser\/","title":{"rendered":"Desgaseificador de alum\u00ednio l\u00edquido"},"content":{"rendered":"<p>No m\u00e9todo rotativo do desgaseificador de alum\u00ednio l\u00edquido, um g\u00e1s inerte ou quimicamente inativo (arg\u00f4nio, nitrog\u00eanio) \u00e9 injetado atrav\u00e9s de um eixo rotativo e de um rotor.<\/p>\n<p>A energia do eixo girat\u00f3rio provoca a forma\u00e7\u00e3o de um grande n\u00famero de bolhas finas, proporcionando uma rela\u00e7\u00e3o superf\u00edcie\/volume muito elevada.<\/p>\n<p>A grande \u00e1rea superficial espec\u00edfica promove a difus\u00e3o r\u00e1pida e eficiente do hidrog\u00eanio nas bolhas de g\u00e1s, o que ajuda a equalizar a atividade do hidrog\u00eanio nas fases l\u00edquida e gasosa.<\/p>\n<p>A unidade de desgaseifica\u00e7\u00e3o online adota tecnologia avan\u00e7ada de fus\u00e3o de alum\u00ednio com alto teor de sil\u00edcio para garantir uma longa vida \u00fatil; o rotor de desgaseifica\u00e7\u00e3o, o terminal de prote\u00e7\u00e3o do aquecimento e o terminal de prote\u00e7\u00e3o do termopar s\u00e3o fabricados com tecnologia cer\u00e2mica capaz de atender aos requisitos da produ\u00e7\u00e3o de alum\u00ednio de alta precis\u00e3o.<\/p>\n<p>O <a href=\"http:\/\/www.alalloycasting.com\/pt\/dual-rotor-online-degassing-unit\/\">unidade de desgaseifica\u00e7\u00e3o online<\/a>\u00a0deve ser instalada entre o forno e o equipamento de fundi\u00e7\u00e3o. \u00c9 utilizada para a remo\u00e7\u00e3o de hidrog\u00eanio (H) e esc\u00f3ria do alum\u00ednio fundido. A unidade de desgaseifica\u00e7\u00e3o em linha tem uma dupla fun\u00e7\u00e3o: tratamento e aquecimento. Ela atende ao setor de purifica\u00e7\u00e3o de alta precis\u00e3o do alum\u00ednio fundido.<\/p>\n<p>O desgaseificador de alum\u00ednio l\u00edquido baseia-se no princ\u00edpio de que o g\u00e1s hidrog\u00eanio dissolvido se deslocar\u00e1 de uma \u00e1rea de alta concentra\u00e7\u00e3o (na massa fundida) para uma \u00e1rea de baixa concentra\u00e7\u00e3o (no g\u00e1s inerte).<br \/>\nO g\u00e1s hidrog\u00eanio se dispersa no metal fundido da mesma forma que se fosse liberado em um espa\u00e7o confinado.<br \/>\nEla manter\u00e1 uma concentra\u00e7\u00e3o constante durante todo o processo de fus\u00e3o.<br \/>\nO g\u00e1s hidrog\u00eanio pode migrar atrav\u00e9s do metal l\u00edquido quase t\u00e3o rapidamente quanto atrav\u00e9s do ar.<\/p>\n<p>Fontes de hidrog\u00eanio no alum\u00ednio fundido:<br \/>\numidade atmosf\u00e9rica<br \/>\nmassa met\u00e1lica \u00famida<br \/>\nrevestimento \u00famido do forno (cadinho, bolsas de transfer\u00eancia)<br \/>\ninstrumentos de fundi\u00e7\u00e3o \u00famida<br \/>\nrastos \u00famidos e outros materiais de consumo<br \/>\nprodutos da combust\u00e3o de combust\u00edvel de fornalha que cont\u00eam hidrog\u00eanio<\/p>\n<p>Portanto, n\u00e3o \u00e9 necess\u00e1rio colocar cada on\u00e7a de metal em contato com o g\u00e1s inerte. A efici\u00eancia da desgaseifica\u00e7\u00e3o do alum\u00ednio \u00e9 determinada por dois fatores: a taxa de transfer\u00eancia pela interface metal\/g\u00e1s e a \u00e1rea superficial total dispon\u00edvel para a transfer\u00eancia.<\/p>","protected":false},"excerpt":{"rendered":"<p>In the rotary method of the aluminium liquid degasser, an inert or chemically inactive gas (Argon, Nitrogen) is purged through a rotary shaft and a&hellip;<\/p>","protected":false},"author":1,"featured_media":11460,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-11459","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminium Liquid Degasser -sales@alalloycasting.com<\/title>\n<meta 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