{"id":8234,"date":"2021-03-31T03:36:36","date_gmt":"2021-03-31T03:36:36","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8234"},"modified":"2021-03-31T03:36:36","modified_gmt":"2021-03-31T03:36:36","slug":"solid-flux","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/solid-flux\/","title":{"rendered":"Flujo s\u00f3lido"},"content":{"rendered":"<p>El refinado con fundente consiste en la adici\u00f3n de compuestos para limpiar el horno (de fusi\u00f3n o de mantenimiento) o para transferir el ba\u00f1o de aleaci\u00f3n de aluminio fundido a la cuchara de colada. El refinado con fundente es el primer paso para obtener metal fundido puro, ya que evita la formaci\u00f3n excesiva de \u00f3xidos, elimina las inclusiones no met\u00e1licas de la masa fundida y previene y elimina la acumulaci\u00f3n de \u00f3xidos en las paredes del horno. En general, los fundentes se pueden dividir en dos categor\u00edas: gaseosos o s\u00f3lidos.<\/p>\n<p>El flujo de gas puede consistir en una mezcla de gas inerte y gas qu\u00edmicamente activo inyectada en el ba\u00f1o fundido.<\/p>\n<p>El fundente s\u00f3lido es una mezcla de sales y constituye el tipo de fundente m\u00e1s utilizado en las fundiciones, sobre todo porque las consideraciones medioambientales han eliminado casi por completo el uso de mezclas gaseosas que contienen cloro.<\/p>\n<p>El fundente es una mezcla especial de compuestos inorg\u00e1nicos s\u00f3lidos t\u00edpicos, dise\u00f1ada para desgasificar, desmagnetizar, limpiar, refinar el grano y modificar qu\u00edmicamente la aleaci\u00f3n de aluminio fundida, as\u00ed como para otros fines. El fundente se suele a\u00f1adir al horno, al crisol, a la cuchara de colada u otros recipientes de aluminio durante la fusi\u00f3n, el mantenimiento del calor o la desgasificaci\u00f3n del aluminio. La calidad de la materia prima del fundente, el m\u00e9todo de adici\u00f3n y la forma del producto influyen en la eficacia. La formulaci\u00f3n del fundente variar\u00e1 en funci\u00f3n de su uso y de otras variables del proceso (como la aleaci\u00f3n y la temperatura).<\/p>\n<p>El fundente s\u00f3lido es, principalmente, una mezcla de sales de cloruro y fluoruro, adem\u00e1s de aditivos que le confieren propiedades especiales.<\/p>\n<p>La mayor\u00eda de los fundentes se basan en una mezcla de KCl y NaCl, que forma un eut\u00e9ctico a baja temperatura (665 \u00b0C). Otro componente habitual de los fundentes es el NaF, que forma un eut\u00e9ctico ternario con el KCl y el NaCl y tiene un punto de fusi\u00f3n de 607 \u00b0C.<\/p>\n<p>El com\u00fan <a href=\"http:\/\/www.alalloycasting.com\/es\/covering-flux\/\">flujo de recubrimiento<\/a> contiene aproximadamente 47,5% de NaCl, 47,5% de KCl y 5% de sal fluorada. El bajo punto de fusi\u00f3n es importante, ya que mejora la fluidez del fundente.<\/p>\n<p>Otra capa protectora <a href=\"http:\/\/www.alalloycasting.com\/es\/fluxes\/\">flujos<\/a> se basan en MgCl\u2082-KCl (que forma un eut\u00e9ctico de bajo punto de fusi\u00f3n a 424 \u00b0C) o en alcalioleita (MgCl\u2082\u00d7KCl), que se funde a 485 \u00b0C. Estos fundentes de recubrimiento tienen una alta fluidez y pueden formar una fina capa sobre la superficie del metal fundido. Sin embargo, el MgCl\u2082 es bastante caro, por lo que se utiliza principalmente en fundentes sin sodio para aleaciones con un contenido de magnesio superior al 2% en peso. Tambi\u00e9n pueden utilizarse cuando es importante eliminar el calcio en aleaciones con un contenido de magnesio relativamente alto.<\/p>","protected":false},"excerpt":{"rendered":"<p>Flux refining refers to the addition of compounds to clean the furnace (melting or holding) or to transfer the molten aluminum alloy pool in the&hellip;<\/p>","protected":false},"author":1,"featured_media":8235,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8234","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>Solid Flux for Molten Aluminum Refining -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The solid flux is mainly a mixture of chloride and fluoride salts and 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