{"id":11256,"date":"2021-11-17T09:18:04","date_gmt":"2021-11-17T09:18:04","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11256"},"modified":"2021-11-17T09:18:04","modified_gmt":"2021-11-17T09:18:04","slug":"rotating-degassing-method","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/rotating-degassing-method\/","title":{"rendered":"M\u00e9todo de desgasificaci\u00f3n por rotaci\u00f3n"},"content":{"rendered":"<p>En la actualidad, el m\u00e9todo de desgasificaci\u00f3n rotativa es el m\u00e1s utilizado.<\/p>\n<p>En el proceso de fundici\u00f3n y moldeo de aleaciones de aluminio reciclado, el metal fundido entra en contacto con los gases del horno y con la atm\u00f3sfera, lo que da lugar a una serie de reacciones f\u00edsicas y qu\u00edmicas que generan gases y \u00f3xidos. El gas y las inclusiones presentes en el lingote de aleaci\u00f3n provocan que este sufra descamaci\u00f3n, delaminaci\u00f3n y desgarros durante su procesamiento y deformaci\u00f3n, y reducen la resistencia y la plasticidad del metal o la aleaci\u00f3n. El gas absorbido provocar\u00e1 la formaci\u00f3n de burbujas en la chapa, lo que dar\u00e1 lugar a la denominada \u201cfragilizaci\u00f3n por hidr\u00f3geno\u201d, que causa la fractura del material. Por lo tanto, es imprescindible desgasificar el lingote de aluminio antes de su fundici\u00f3n.<\/p>\n<p>En el m\u00e9todo de desgasificaci\u00f3n por rotaci\u00f3n, se introduce gas inerte o gas activo en la masa fundida a trav\u00e9s de un rotor de una forma determinada. Se aprovecha la rotaci\u00f3n a alta velocidad del rotor para romper las burbujas. Durante el proceso de flotaci\u00f3n de las burbujas, el hidr\u00f3geno y las inclusiones s\u00f3lidas son expulsados de la superficie de la masa fundida gracias al principio de la diferencia de presi\u00f3n parcial y al principio de adsorci\u00f3n, con lo que se consigue el efecto de purificaci\u00f3n.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11060\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/11\/Aluminium-Purification-Treatment.jpg\" alt=\"\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/11\/Aluminium-Purification-Treatment.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/11\/Aluminium-Purification-Treatment-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>La velocidad del rotor influye de manera importante en el \u00e1rea de distribuci\u00f3n de las burbujas. Cuando la velocidad es inferior a 280 r\/min, las burbujas son m\u00e1s grandes. A medida que aumenta la velocidad, el \u00e1rea afectada se ampl\u00eda a\u00fan m\u00e1s. Cuando la velocidad de rotaci\u00f3n se incrementa hasta 410 r\/min, el \u00e1rea de distribuci\u00f3n de las burbujas cambia significativamente y estas se distribuyen por toda la superficie. El tama\u00f1o de las burbujas influye de manera importante en el efecto de desgasificaci\u00f3n. Cuanto m\u00e1s peque\u00f1as son las burbujas, mayor es el \u00e1rea total de contacto con la masa fundida. <a href=\"http:\/\/www.alalloycasting.com\/es\/metal-degassing\/\">Desgasificaci\u00f3n de metales<\/a> se consigue principalmente mediante la difusi\u00f3n del hidr\u00f3geno presente en la masa fundida hacia el interior de las burbujas. El aumento de la superficie de contacto entre las burbujas y la masa fundida incrementa la velocidad de desgasificaci\u00f3n. Adem\u00e1s, el tama\u00f1o de las burbujas tambi\u00e9n influye en el tiempo de permanencia de estas en la masa fundida.<\/p>","protected":false},"excerpt":{"rendered":"<p>At present, the rotating degassing method is the most widely used method. In the process of smelting and casting of recycled aluminum alloy, the molten&hellip;<\/p>","protected":false},"author":1,"featured_media":11257,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12819,12818],"class_list":["post-11256","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-metal-degassing-for-aluminum-casting","tag-rotating-degassing-method"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rotating Degassing Method, Metal Degassing for Aluminum Casting<\/title>\n<meta name=\"description\" content=\"In the rotating degassing method, inert gas or active gas is introduced into the melt through a rotor of a certain shape.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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