{"id":9332,"date":"2021-06-26T05:45:41","date_gmt":"2021-06-26T05:45:41","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9332"},"modified":"2022-03-21T09:12:12","modified_gmt":"2022-03-21T09:12:12","slug":"refining-fluxes-for-foundry","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/refining-fluxes-for-foundry\/","title":{"rendered":"Fundentes de refinado para fundici\u00f3n"},"content":{"rendered":"

Los fundentes de refinado para fundici\u00f3n suelen estar compuestos por cloruros de metales alcalinos o de metales alcalinot\u00e9rreos, que se mezclan para obtener un punto de fusi\u00f3n inferior a la temperatura de trabajo de la aleaci\u00f3n; el punto de fusi\u00f3n de un compuesto puro suele ser bastante elevado. Tras a\u00f1adir los fundentes de refinado para fundici\u00f3n al metal, las impurezas y la sal flotan en la superficie del metal l\u00edquido y pueden eliminarse f\u00e1cilmente. El tama\u00f1o de las part\u00edculas se controla mediante el uso del compuesto s\u00f3lido obtenido a partir de la sal fundida.<\/p>\n

Agentes refinadores granulares<\/a> Se puede utilizar en procesos por lotes o en procesos continuos.<\/p>\n

Se pueden utilizar diversos m\u00e9todos para incorporar el fundente salino a la aleaci\u00f3n:<\/p>\n

Antes de a\u00f1adir el aluminio, se introdujeron fundentes de KCl y MgCl\u2082 en estado s\u00f3lido en el fondo del recipiente de precalentamiento.<\/p>\n

Actualmente, el flujos<\/a> se a\u00f1aden mediante gas inerte en el tubo situado debajo de la superficie met\u00e1lica (fundente de pistola pulverizadora).<\/p>\n

\"Fundentes<\/p>\n

Recientemente se ha desarrollado un m\u00e9todo en el que un eje hueco utiliza un gas portador para introducir el fundente de sal en la aleaci\u00f3n y dispersar el fundente salino<\/a> mediante un agitador (inyecci\u00f3n rotativa de fundente). Este m\u00e9todo reduce la cantidad de fundente salino necesaria para la purificaci\u00f3n y, al mismo tiempo, aumenta la dispersi\u00f3n del fundente salino en la aleaci\u00f3n.<\/p>\n

Adem\u00e1s, debido al impacto negativo que se considera que tiene sobre el contenido de sodio del aluminio o de la aleaci\u00f3n de aluminio resultante, no se recomienda el uso de fundentes salinos con un contenido significativo de cloruro de sodio. De hecho, cuando el cloruro de sodio est\u00e1 presente en el fundente utilizado para purificar el aluminio o las aleaciones de aluminio, actualmente se evita o se limita su uso. M\u00e1s concretamente, para determinados tipos de aleaciones, como las aleaciones de aluminio con un contenido de silicio superior al 10%, y m\u00e1s concretamente las aleaciones de aluminio con un contenido de magnesio superior al 3%, se recomienda no utilizar cloruro de sodio en el fundente salino.<\/p>","protected":false},"excerpt":{"rendered":"

Refining fluxes for foundry are usually composed of alkali metal chlorides or alkaline earth metal chlorides, which are mixed to obtain a melting point below…<\/p>","protected":false},"author":1,"featured_media":9334,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9332","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nRefining Fluxes for Foundry -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Refining fluxes for foundry are usually composed of alkali metal chlorides or alkaline earth metal chlorides, which are mixed.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/es\/refining-fluxes-for-foundry\/\" \/>\n<meta property=\"og:locale\" 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