{"id":6865,"date":"2020-12-07T02:13:59","date_gmt":"2020-12-07T02:13:59","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6865"},"modified":"2020-12-07T02:13:59","modified_gmt":"2020-12-07T02:13:59","slug":"flux-for-molten-aluminium","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/flux-for-molten-aluminium\/","title":{"rendered":"Fundente para aluminio fundido"},"content":{"rendered":"<p>Para eliminar los elementos de metales alcalinos (es decir, Na, Ca, K y Li), el uso de un gas fundente reactivo que contiene cloro es un m\u00e9todo reconocido para el tratamiento del aluminio fundido. En condiciones de equilibrio, se forman los cloruros de cada uno de estos elementos como productos de la reacci\u00f3n. Excepto el LiCl, todas estas sales halogenadas son especies puras y se encuentran en estado s\u00f3lido a la temperatura normal de procesamiento, por lo que se separan f\u00e1cilmente hacia la superficie de la masa fundida y se eliminan mediante desnatado.<\/p>\n<p>Los elementos de metales alcalinos suelen estar presentes en concentraciones en la masa fundida inferiores a 500 ppm. Seg\u00fan la ley de acci\u00f3n de masas, se generan sales metaestables fuera de equilibrio, como el AlCl\u2083. Estos haluros son indeseables porque afectan en gran medida a la transmisi\u00f3n por aire durante el proceso. Adem\u00e1s, el MgCl\u2082 se funde a 1306 \u00b0F y, por lo general, se funde a temperaturas normales de procesamiento. La sal fundida es muy indeseable porque resulta dif\u00edcil separarla de la superficie mediante desnatado. Por lo tanto, resulta muy conveniente hacer reaccionar o formar complejos con elementos alcalinos para producir una sal con un punto de fusi\u00f3n m\u00e1s elevado, que se separe de forma m\u00e1s eficaz en estado s\u00f3lido mediante flotaci\u00f3n hacia la superficie.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6874\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/12\/Flux-for-Molten-Aluminium-1.jpg\" alt=\"Fundente para aluminio fundido\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Flux-for-Molten-Aluminium-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Flux-for-Molten-Aluminium-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Al dispersar el gas fundente en el aluminio fundido, este se introduce en el cuerpo principal hacia abajo a lo largo de la direcci\u00f3n axial y se dispersa mediante el impulsor giratorio instalado en el eje. Sin embargo, este m\u00e9todo no es ilimitado. El impulsor giratorio genera un v\u00f3rtice alrededor del eje, lo que implica que la mayor parte del metal fundido gira o circula alrededor del eje del impulsor a una velocidad cercana a la del propio impulsor. El fundente a\u00f1adido al metal fundido tiende a circular junto con este, con una dispersi\u00f3n m\u00ednima. Adem\u00e1s, el v\u00f3rtice tiene el efecto de aumentar la superficie de la masa fundida expuesta al aire. La mayor exposici\u00f3n del metal fundido al aire provoca una mayor formaci\u00f3n de escoria. Cuando el fundente es un gas, el v\u00f3rtice puede causar problemas de otra forma. El gas del metal fundido se desplaza hacia el centro del v\u00f3rtice por separaci\u00f3n f\u00edsica y, como resultado, otras partes del metal fundido no son tratadas suficientemente por dicho gas. Por lo tanto, dado que ninguna parte del metal fundido es tratada con fundente, la eficacia de este m\u00e9todo se ve reducida. Adem\u00e1s, el gas fundente arrastrado por el flujo de metal fundido tiende a fusionarse, lo que da lugar a la formaci\u00f3n de burbujas de gas fundente m\u00e1s grandes en el metal fundido. Las burbujas m\u00e1s grandes reducen la eficiencia del fundente, ya que se procesa menos metal fundido.<\/p>\n<p>Distribuir el material fundente de forma homog\u00e9nea por toda la masa fundida y mejorar el contacto entre el metal fundido y el fundente, lo que puede mejorar la fluidez de la masa fundida. Adem\u00e1s, existe una gran necesidad de mejorar los m\u00e9todos de filtraci\u00f3n de metales fundidos, como el aluminio fundido. El filtro de espuma cer\u00e1mica se utiliza ampliamente para <a href=\"http:\/\/www.alalloycasting.com\/es\/molten-aluminum-filtration\/\">filtraci\u00f3n de aluminio fundido<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>In order to remove alkali metal elements (ie Na, Ca, K, Li), the use of chlorine-containing reactive flux gas is a recognized method for processing&hellip;<\/p>","protected":false},"author":1,"featured_media":6875,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-6865","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Flux for Molten Aluminium -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"In order to remove alkali metal 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