{"id":10594,"date":"2021-10-14T03:16:43","date_gmt":"2021-10-14T03:16:43","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10594"},"modified":"2021-10-14T03:16:43","modified_gmt":"2021-10-14T03:16:43","slug":"molten-aluminum-degassing-refining","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/molten-aluminum-degassing-refining\/","title":{"rendered":"Desgasificaci\u00f3n y refinado del aluminio fundido"},"content":{"rendered":"<p>El objetivo principal del proceso de refinado por desgasificaci\u00f3n del aluminio fundido es eliminar el gas disuelto en el metal fundido.<\/p>\n<p>En el proceso de calentamiento y fundici\u00f3n de las aleaciones de aluminio, tanto los metales s\u00f3lidos como los l\u00edquidos tienen cierta capacidad para absorber H\u2082, O\u2082 y otros gases. Esta propiedad de los metales se denomina \u00abgettering\u00bb y es una de las caracter\u00edsticas m\u00e1s importantes de la fundici\u00f3n de los metales. La experiencia ha demostrado que el gas presente en el metal en estado de adsorci\u00f3n, disoluci\u00f3n y combinaci\u00f3n tiene un efecto adverso sobre las propiedades del metal y de la aleaci\u00f3n, as\u00ed como sobre la calidad del lingote.<\/p>\n<p>El hidr\u00f3geno disuelto en la aleaci\u00f3n es la causa principal de la porosidad, la formaci\u00f3n de ampollas y la delaminaci\u00f3n de las chapas y las bandas, e incluso de la fragilizaci\u00f3n por hidr\u00f3geno del material. La presencia de ox\u00edgeno, nitr\u00f3geno y sus compuestos en el material deteriora las propiedades de proceso y mec\u00e1nicas del mismo. Por lo tanto, otra de las tareas principales de la fundici\u00f3n es eliminar el gas disuelto en el metal fundido. Comprender y dominar el m\u00e9todo de refinado por desgasificaci\u00f3n es clave para dise\u00f1ar el proceso destinado a reducir la absorci\u00f3n de gases por parte del metal y a llevar a cabo la desgasificaci\u00f3n. Esto reviste una gran importancia para mejorar la calidad del aluminio fundido y obtener lingotes que cumplan los requisitos.<\/p>\n<p>Existen tres formas de refino por desgasificaci\u00f3n del aluminio fundido: la primera consiste en que los \u00e1tomos de gas se difunden hacia la superficie del metal y, a continuaci\u00f3n, se liberan del estado de adsorci\u00f3n; la segunda consiste en eliminarlos de la masa fundida en forma de burbujas; y la tercera consiste en que formen compuestos con los elementos a\u00f1adidos al metal. Se expulsan en forma de inclusiones no met\u00e1licas. La mayor\u00eda de estos compuestos no crean poros en el lingote de metal.<\/p>\n<p>Para obtener un metal fundido con bajo contenido en gases, por un lado, es necesario preparar cuidadosamente el material, controlar estrictamente la temperatura, fundirlo r\u00e1pidamente y adoptar medidas como <a href=\"http:\/\/www.alalloycasting.com\/es\/covering-agent\/\">agente de recubrimiento<\/a> para reducir la absorci\u00f3n de gas. El gas presente en el metal se reduce al nivel m\u00e1s bajo posible.<\/p>","protected":false},"excerpt":{"rendered":"<p>The main purpose of molten aluminum degassing refining is to remove the gas dissolved in the molten metal. In the process of heating and smelting&hellip;<\/p>","protected":false},"author":1,"featured_media":10595,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10594","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>Molten Aluminum Degassing Refining for Obtaining Qualified Ingots<\/title>\n<meta name=\"description\" content=\"The main purpose of molten aluminum degassing refining is to remove the gas dissolved in the molten metal. 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