{"id":11810,"date":"2021-12-15T02:09:42","date_gmt":"2021-12-15T02:09:42","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11810"},"modified":"2021-12-15T02:09:42","modified_gmt":"2021-12-15T02:09:42","slug":"removing-inclusions","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/removing-inclusions\/","title":{"rendered":"Eliminaci\u00f3n de inclusiones"},"content":{"rendered":"<p>La eliminaci\u00f3n eficaz de las inclusiones es una de las tareas principales del proceso de fundici\u00f3n del aluminio. Las inclusiones se agrupan y crecen, y, gracias a la flotabilidad, suben a la superficie y se adhieren a la pared interior del recipiente metal\u00fargico, o bien son capturadas y arrastradas por burbujas flotantes, lo que constituye la principal forma de eliminarlas. Al inyectar gas (principalmente N\u2082) en el aluminio fundido, se puede modificar el estado de flujo de este, lo que favorece la homogeneizaci\u00f3n de la temperatura y la composici\u00f3n del aluminio fundido; adem\u00e1s, las peque\u00f1as burbujas generadas pueden capturar las part\u00edculas de inclusi\u00f3n y hacer que estas floten hacia la superficie. Esto favorece la producci\u00f3n de aluminio puro.<\/p>\n<p>En el aluminio fundido, adem\u00e1s de ser eliminadas por las burbujas mediante adhesi\u00f3n, las inclusiones tambi\u00e9n pueden ser eliminadas por la estela de la burbuja. Cuando la burbuja flota en el aluminio fundido, el l\u00edquido situado en su cola se introduce en la burbuja para que esta se desprenda y ascienda, y el vac\u00edo de volumen resultante forma una zona de remolino en la cola de la burbuja. El fluido de esta zona de remolino forma la estela de la burbuja. Si las inclusiones se encuentran dentro o cerca de la zona de remolino, pueden ser arrastradas hacia ella y ascender junto con las burbujas.<\/p>\n<p>Los estudios han demostrado que la forma de las burbujas en el aluminio fundido guarda una estrecha relaci\u00f3n con su tama\u00f1o. Las burbujas con un di\u00e1metro inferior a 3 mm son esf\u00e9ricas; las de entre 3 y 10 mm, elipsoidales; y las de m\u00e1s de 10 mm, tienen forma de corona; adem\u00e1s, las burbujas de 1,5 mm de di\u00e1metro presentan estelas evidentes.<\/p>\n<p>El proceso de eliminaci\u00f3n de inclusiones mediante la estela de burbujas puede dividirse en los tres procesos siguientes:<\/p>\n<p>(1) Las inclusiones se acercan a la zona de estela de la burbuja;<br \/>\n(2) Las inclusiones entran en la zona de estela de la burbuja;<br \/>\n(3) Las inclusiones circulan en la estela de las burbujas y flotan hacia arriba junto con ellas.<\/p>\n<p>El hecho de que las part\u00edculas de inclusi\u00f3n puedan ser capturadas por la estela de la burbuja depende de la posici\u00f3n relativa entre la inclusi\u00f3n y la burbuja, de la turbulencia del fluido, del tama\u00f1o y la forma de la burbuja y de la inclusi\u00f3n, y de la tensi\u00f3n superficial.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11812\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/12\/Gas-Purifier.jpg\" alt=\"\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/12\/Gas-Purifier.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/12\/Gas-Purifier-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>La adhesi\u00f3n de las burbujas para eliminar las inclusiones y la estela de las burbujas para eliminar las inclusiones son los principales mecanismos mediante los cuales las burbujas ascienden para eliminar las inclusiones en el proceso metal\u00fargico.<\/p>\n<p>La diferencia en el mecanismo de acci\u00f3n de los dos m\u00e9todos de extracci\u00f3n deber\u00eda residir en:<\/p>\n<p>(1) La posici\u00f3n de las inclusiones y las burbujas es diferente antes de que act\u00faen. Las manifestaciones de la adhesi\u00f3n de las burbujas y <a href=\"http:\/\/www.alalloycasting.com\/es\/inclusions-removal\/\">eliminaci\u00f3n de inclusiones<\/a> y la eliminaci\u00f3n de las inclusiones mediante la estela de las burbujas se debe a que las inclusiones act\u00faan sobre las burbujas tanto desde arriba como desde abajo.<\/p>\n<p>(2) Cuando el tama\u00f1o de la burbuja var\u00eda, tambi\u00e9n cambia la forma en que esta flota para eliminar las inclusiones. En el rango de vol\u00famenes de aire m\u00e1s peque\u00f1os, las inclusiones con burbujas de menor tama\u00f1o se eliminan principalmente mediante la adhesi\u00f3n y la eliminaci\u00f3n de un gran n\u00famero de peque\u00f1as burbujas dispersas; en el rango de vol\u00famenes de aire m\u00e1s grandes, las inclusiones se eliminan principalmente gracias a la estela de las burbujas grandes.<\/p>\n<p>En el proceso real, el flujo del aluminio fundido en el recipiente metal\u00fargico es muy complejo, y las burbujas no eliminan las inclusiones de una forma concreta.<\/p>","protected":false},"excerpt":{"rendered":"<p>Effectively removing inclusions is one of the main tasks of the aluminum smelting process. Inclusions aggregate and grow, and rely on buoyancy to float up&hellip;<\/p>","protected":false},"author":1,"featured_media":11811,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-11810","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>Removing Inclusions in Aluminum Smelting Process<\/title>\n<meta name=\"description\" content=\"Effectively removing inclusions is one of the main tasks of the aluminum smelting process. 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