{"id":8518,"date":"2021-04-24T08:21:44","date_gmt":"2021-04-24T08:21:44","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8518"},"modified":"2021-04-23T08:59:46","modified_gmt":"2021-04-23T08:59:46","slug":"aluminum-foundry-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/aluminum-foundry-degassing\/","title":{"rendered":"Desgasificaci\u00f3n en fundiciones de aluminio"},"content":{"rendered":"<p>Existen tres m\u00e9todos b\u00e1sicos de uso comercial para eliminar las impurezas de las fundiciones de aluminio. En las fundiciones de aluminio se suele utilizar arg\u00f3n, nitr\u00f3geno o cloro como agente desgasificador.<\/p>\n<p>El proceso de desgasificaci\u00f3n en la fundici\u00f3n de aluminio utiliza gases inertes (arg\u00f3n y nitr\u00f3geno) que pueden eliminar eficazmente el hidr\u00f3geno, al menos hasta cierto punto, pero que resultan relativamente ineficaces a la hora de eliminar impurezas de los materiales activos, como el sodio, el calcio, el litio y el exceso de magnesio.<\/p>\n<p>El arg\u00f3n y el nitr\u00f3geno son eficaces para la desgasificaci\u00f3n en la fundici\u00f3n de aluminio, pero solo pueden eliminar una determinada cantidad de hidr\u00f3geno absoluto. Otro problema del arg\u00f3n o el nitr\u00f3geno de grado industrial es que estos gases pueden contener humedad y ox\u00edgeno, lo que puede dar lugar a la formaci\u00f3n de hidr\u00f3geno y \u00f3xido de aluminio. El gas de pureza ultraalta evita este problema. Ni el nitr\u00f3geno ni el arg\u00f3n tienen un efecto significativo sobre los \u00f3xidos o las part\u00edculas presentes en la masa fundida.<\/p>\n<p>El arg\u00f3n es un gas inerte, no reacciona con la masa fundida, por lo que el hidr\u00f3geno se elimina por difusi\u00f3n hacia las burbujas de arg\u00f3n. Las part\u00edculas se eliminan mediante un mecanismo de purificaci\u00f3n. Salvo por una posible agitaci\u00f3n mec\u00e1nica, el arg\u00f3n no tiene ning\u00fan efecto sobre los elementos. En principio, el nitr\u00f3geno tiene el mismo efecto que el arg\u00f3n. Sin embargo, se considera generalmente que, en situaciones similares, cuando se utiliza arg\u00f3n o nitr\u00f3geno, la deshidrogenaci\u00f3n es m\u00e1s r\u00e1pida. Del mismo modo, al utilizar arg\u00f3n, el valor absoluto del hidr\u00f3geno que queda en la masa fundida ser\u00e1 ligeramente inferior al que se obtiene con el nitr\u00f3geno.<\/p>\n<p>La desgasificaci\u00f3n en las fundiciones de aluminio utiliza cloro, que, al a\u00f1adirse al metal fundido, reacciona r\u00e1pidamente con el AlCl\u2083, que se encuentra en estado gaseoso a temperaturas superiores a unos 374 grados Fahrenheit, de modo que el metal fundido es barrido por las burbujas de AlCl\u2083 que ascienden. El cloro es muy eficaz para eliminar el hidr\u00f3geno por difusi\u00f3n, ya que la presi\u00f3n parcial del hidr\u00f3geno en el AlCl\u2083 es pr\u00e1cticamente nula. Sin embargo, el exceso estequiom\u00e9trico de cloro gaseoso se expulsa del ba\u00f1o fundido en forma de cloro puro, lo que plantea problemas de seguridad y medioambientales. Adem\u00e1s, la reacci\u00f3n entre el cloro y el aluminio es bastante lenta en comparaci\u00f3n con otros metales.<\/p>\n<p>AdTech <a href=\"http:\/\/www.alalloycasting.com\/es\/refining-flux\/\">fundente de refinado<\/a> y <a href=\"http:\/\/www.alalloycasting.com\/es\/online-refining-and-degassing-systems\/\">sistemas de desgasificaci\u00f3n en l\u00ednea<\/a> Todos ellos requieren el uso de gas inerte para la desgasificaci\u00f3n y la purificaci\u00f3n. Si necesitas fundentes y equipos de desgasificaci\u00f3n para purificar el aluminio, ponte en contacto con nosotros en sales@alalloycasting.com.<\/p>","protected":false},"excerpt":{"rendered":"<p>There are three basic methods in commercial use for removing impurities from aluminum melts. The aluminum foundry often uses argon, nitrogen, or chlorine as the&hellip;<\/p>","protected":false},"author":1,"featured_media":8519,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8518","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>Aluminum Foundry Degassing with Argon and Nitrogen<\/title>\n<meta name=\"description\" content=\"The aluminum foundry often uses argon, nitrogen, or chlorine as the degassing agent. 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