{"id":12300,"date":"2022-01-17T07:59:25","date_gmt":"2022-01-17T07:59:25","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=12300"},"modified":"2022-01-17T07:59:25","modified_gmt":"2022-01-17T07:59:25","slug":"aluminum-rotary-degasser","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-rotary-degasser\/","title":{"rendered":"Desgaseificador rotativo de alum\u00ednio"},"content":{"rendered":"<p>O desgaseificador rotativo de alum\u00ednio \u00e9 utilizado principalmente para remover gases e outras impurezas do alum\u00ednio fundido antes do processo de fundi\u00e7\u00e3o.<\/p>\n<p>Em uma aplica\u00e7\u00e3o t\u00edpica de um desgaseificador rotativo para alum\u00ednio fundido, o hidrog\u00eanio dissolvido \u00e9 o g\u00e1s-alvo que \u00e9 removido da massa fundida antes da pr\u00f3xima etapa do processo, como a fundi\u00e7\u00e3o. Por exemplo, se o hidrog\u00eanio permanecer no alum\u00ednio durante a fundi\u00e7\u00e3o, o hidrog\u00eanio que se liberta da solu\u00e7\u00e3o pode causar um ou mais problemas de fundi\u00e7\u00e3o, como empenamento, descascamento, forma\u00e7\u00e3o de bolhas ou at\u00e9 mesmo rachaduras. O hidrog\u00eanio dissolvido geralmente precisa ser removido antes da pr\u00f3xima etapa do processo.<\/p>\n<p>Os n\u00edveis de hidrog\u00eanio dissolvido espec\u00edficos para cada aplica\u00e7\u00e3o podem variar amplamente, mas podem oscilar entre 0,20 ml\/100 g de Al para lingotes extrudados de uso geral e 0,10 ml\/100 g de Al para placas laminadas destinadas a aplica\u00e7\u00f5es do setor aeroespacial.<\/p>\n<p>O hidrog\u00eanio \u00e9 geralmente removido do alum\u00ednio fundido por meio da introdu\u00e7\u00e3o de um g\u00e1s inerte no metal. Entre os gases inertes que podem ser utilizados est\u00e3o o arg\u00f4nio e o nitrog\u00eanio.<\/p>\n<p>Al\u00e9m da remo\u00e7\u00e3o do hidrog\u00eanio por meio do uso de gases inertes, muitas vezes \u00e9 desej\u00e1vel remover outras impurezas durante o processo de refino, e essa remo\u00e7\u00e3o tamb\u00e9m pode ocorrer durante o processo de desgaseifica\u00e7\u00e3o.<\/p>\n<p>Por exemplo, a adi\u00e7\u00e3o de pequenas quantidades de cloro ao g\u00e1s inerte pode remover diversas inclus\u00f5es e impurezas de metais alcalinos de maneira relativamente eficiente.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-12301\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2022\/01\/Aluminum-Rotary-Degasser.jpg\" alt=\"Desgaseificador rotativo de alum\u00ednio\" width=\"600\" height=\"500\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/01\/Aluminum-Rotary-Degasser.jpg 600w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/01\/Aluminum-Rotary-Degasser-300x250.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>As inclus\u00f5es no alum\u00ednio fundido podem ter diversas origens nos fornos de metal fundido durante as opera\u00e7\u00f5es de fundi\u00e7\u00e3o. A remo\u00e7\u00e3o inadequada dessas inclus\u00f5es pode causar rasgos e defeitos superficiais nas chapas de alum\u00ednio laminadas, poros min\u00fasculos e maior desgaste da matriz durante a extrus\u00e3o.<\/p>\n<p>Em algumas aplica\u00e7\u00f5es, o objetivo \u00e9 remover aproximadamente 50% das inclus\u00f5es n\u00e3o umedecidas no <a href=\"http:\/\/www.alalloycasting.com\/pt\/degassing-system-for-molten-aluminium\/\">sistema de desgaseifica\u00e7\u00e3o<\/a>. Frequentemente, utiliza-se um filtro de espuma cer\u00e2mica para a filtragem do alum\u00ednio fundido a jusante do sistema de desgaseifica\u00e7\u00e3o, a fim de reduzir ainda mais as inclus\u00f5es no metal fundido.<\/p>","protected":false},"excerpt":{"rendered":"<p>Aluminum Rotary Degasser is mainly used to remove gas and other impurities from molten aluminum before\u00a0the casting process. In a typical application of a rotary&hellip;<\/p>","protected":false},"author":1,"featured_media":12301,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-12300","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-degassing-unit"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Rotary Degasser -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Aluminum Rotary Degasser is mainly used to remove gas and other impurities from molten aluminum before\u00a0the casting process.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/pt\/aluminum-rotary-degasser\/\" \/>\n<meta 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