{"id":5691,"date":"2020-10-19T01:28:07","date_gmt":"2020-10-19T01:28:07","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5691"},"modified":"2020-10-19T01:28:07","modified_gmt":"2020-10-19T01:28:07","slug":"degassing-process-of-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/degassing-process-of-aluminum\/","title":{"rendered":"Proceso de desgasificaci\u00f3n del aluminio"},"content":{"rendered":"

El proceso de desgasificaci\u00f3n del aluminio en la fundici\u00f3n es importante para obtener productos de aluminio de alta calidad. Con el aumento de la demanda de productos de aluminio de alta calidad, especialmente en la industria aeroespacial, tambi\u00e9n ha crecido la necesidad de reducir las inclusiones en los productos moldeados. Un m\u00e9todo de deshidrogenaci\u00f3n muy utilizado consiste en introducir nitr\u00f3geno soplado en el aluminio l\u00edquido. El hidr\u00f3geno es atra\u00eddo por las burbujas de nitr\u00f3geno y, a continuaci\u00f3n, es absorbido por el aluminio y liberado hacia la superficie. El arg\u00f3n tambi\u00e9n es muy eficaz, pero debido al elevado coste asociado a este gas, se prefiere el nitr\u00f3geno. La desgasificaci\u00f3n con nitr\u00f3geno suele requerir una temperatura m\u00e1s baja del aluminio fundido. Aunque la reducci\u00f3n de la temperatura disminuir\u00e1 la velocidad de difusi\u00f3n del hidr\u00f3geno at\u00f3mico en el aluminio fundido, aumentar\u00e1 la viscosidad del mismo y prolongar\u00e1 el tiempo de flotaci\u00f3n de las burbujas, lo que favorece la difusi\u00f3n del nitr\u00f3geno en las burbujas.<\/p>\n

\"Proceso<\/p>\n

Proceso de desgasificaci\u00f3n del aluminio<\/strong><\/p>\n

El impulsor giratorio de dispositivo rotativo de desgasificaci\u00f3n<\/a> Funciona aumentando la superficie de contacto del gas inerte al introducir metal. Las burbujas de nitr\u00f3geno m\u00e1s peque\u00f1as que se producen mediante el proceso del impulsor tienen una superficie total mayor y capturan m\u00e1s hidr\u00f3geno. La menor perturbaci\u00f3n superficial que provocan las burbujas m\u00e1s peque\u00f1as tambi\u00e9n hace que se recupere menos hidr\u00f3geno de la humedad atmosf\u00e9rica hacia los metales. El proceso de desgasificaci\u00f3n del aluminio en la fundici\u00f3n consiste en la eliminaci\u00f3n de gases inertes o qu\u00edmicamente inertes (arg\u00f3n, nitr\u00f3geno) mediante la rotaci\u00f3n del eje y el rotor. La energ\u00eda del eje giratorio da lugar a la formaci\u00f3n de un gran n\u00famero de peque\u00f1as burbujas, lo que proporciona una relaci\u00f3n superficie-volumen muy elevada. La gran superficie favorece la difusi\u00f3n r\u00e1pida y eficaz del hidr\u00f3geno hacia el interior de la burbuja, de modo que la actividad del hidr\u00f3geno en la fase l\u00edquida y en la fase gaseosa es igual. En comparaci\u00f3n con desgasificaci\u00f3n por fundente<\/a>, el desgasificador rotativo puede eliminar el hidr\u00f3geno de forma m\u00e1s eficaz.<\/p>\n

Adem\u00e1s, el desgasificador rotativo no utiliza sales de cloro ni de fl\u00faor nocivas. El desgasificador rotativo tambi\u00e9n puede combinar las funciones de desgasificaci\u00f3n e introducci\u00f3n de fundente. En este caso, el gas inerte act\u00faa como portador del fundente granular. Este m\u00e9todo se denomina inyecci\u00f3n de fundente.<\/p>","protected":false},"excerpt":{"rendered":"

Degassing process of aluminum in casting is important for high-quality aluminum products.\u00a0 With the increasing demand for high-quality aluminum products, especially in the aerospace industry,…<\/p>","protected":false},"author":1,"featured_media":5698,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5691","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nDegassing Process of Aluminum | Rotary Degasser<\/title>\n<meta name=\"description\" content=\"Degassing process of aluminum in casting is important for high-quality products. 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