unidad de desgasificaci\u00f3n<\/a> para el aluminio fundido se coloca entre el horno de mantenimiento y la m\u00e1quina de colada. Se inyecta nitr\u00f3geno en la aleaci\u00f3n de aluminio fundido y, a continuaci\u00f3n, se tritura mediante un rotor giratorio de grafito en el dep\u00f3sito de desgasificaci\u00f3n. De este modo, se forman numerosas burbujas dispersas, lo que hace que la aleaci\u00f3n de aluminio l\u00edquida entre en contacto total con el nitr\u00f3geno en el dep\u00f3sito de tratamiento. Seg\u00fan el principio de la diferencia de presi\u00f3n y la adsorci\u00f3n superficial, las burbujas absorben el hidr\u00f3geno y la escoria de \u00f3xido. A continuaci\u00f3n, las burbujas ascienden a la superficie del metal fundido para formar una capa de espuma. Posteriormente, la aleaci\u00f3n de aluminio fundido fluye desde la salida de la unidad de desgasificaci\u00f3n hacia la m\u00e1quina de colada para purificar la aleaci\u00f3n de aluminio.<\/p>\nEl proceso de eliminaci\u00f3n del hidr\u00f3geno se denomina desgasificaci\u00f3n. Uno de los m\u00e9todos m\u00e1s eficaces para desgasificar el aluminio consiste en utilizar nitr\u00f3geno, un gas inerte seco, en el proceso de desgasificaci\u00f3n inerte rotativa. La clave de la desgasificaci\u00f3n rotativa radica en que el rotor es capaz de romper las grandes burbujas de gas inerte que entran en el metal fundido, convirti\u00e9ndolas en burbujas muy peque\u00f1as y haciendo que se difundan por todo el metal fundido. Al reducir el di\u00e1metro de las burbujas, la superficie del gas inerte aumenta considerablemente, de modo que una mayor superficie de gas inerte entra en contacto con el hidr\u00f3geno y las impurezas presentes en el metal fundido, y el hidr\u00f3geno o las impurezas se eliminan del aluminio fundido a medida que las burbujas ascienden.<\/p>\n
![\"M\u00e9todo](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/10\/Degassing-Method-of-Aluminum-2.jpg\")
<\/p>\n
Principio de desgasificaci\u00f3n<\/strong><\/p>\nEl hidr\u00f3geno disuelto se desplazar\u00e1 desde la zona de alta concentraci\u00f3n (en el metal fundido) hacia la zona de baja concentraci\u00f3n (en el gas inerte). El hidr\u00f3geno se dispersar\u00e1 en el metal fundido a medida que se libere en cualquier espacio cerrado. Mantendr\u00e1 una concentraci\u00f3n constante en toda la masa fundida. La velocidad de migraci\u00f3n del hidr\u00f3geno en el aluminio fundido es casi tan r\u00e1pida como la que tiene en el aire. Por lo tanto, no es necesario exponer cada onza de metal a gases inertes.<\/p>\n
La eficacia de la desgasificaci\u00f3n del aluminio depende de dos factores: la velocidad de transporte a trav\u00e9s de la interfaz metal\/gas y la superficie total por la que puede producirse el transporte.<\/p>","protected":false},"excerpt":{"rendered":"
The degassing method of aluminum is to reduce the hydrogen (gas content) in aluminum melt before casting, which is one of the most important parts…<\/p>","protected":false},"author":1,"featured_media":5712,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5679","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\n
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