{"id":3049,"date":"2018-01-23T09:06:58","date_gmt":"2018-01-23T09:06:58","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=3049"},"modified":"2025-01-08T05:53:11","modified_gmt":"2025-01-08T05:53:11","slug":"composition-of-aluminum-casting-fluxs","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/es\/composition-of-aluminum-casting-fluxs\/","title":{"rendered":"Composici\u00f3n de los fundentes para fundici\u00f3n de aluminio"},"content":{"rendered":"<h2>Composici\u00f3n de los fundentes para fundici\u00f3n de aluminio<\/h2>\n<p><strong><a href=\"https:\/\/www.adtechamm.com\/es\/aluminium-casting-flux\/#:~:text=%E2%80%9CAluminium%20Casting%20Flux%20is%20mainly,(665%C2%B0C)%20eutectic.\">Fundente para fundici\u00f3n de aluminio<\/a> es una mezcla de cloruro de potasio y cloruro de sodio.<\/strong><\/p>\n<p><strong>Derrite previamente el fundente y vi\u00e9rtelo en los lingotes. Los trocitos de fundente que se echen al aluminio \u2014ya sea antes, durante o despu\u00e9s del proceso de fusi\u00f3n\u2014 se fundir\u00e1n aproximadamente a la misma temperatura que el aluminio.<\/strong><\/p>\n<p><strong>\u201c<a href=\"https:\/\/www.alalloycasting.com\/fluxes\/\">Fundente para fundici\u00f3n de aluminio<\/a> Se trata principalmente de mezclas de sales de cloruro y fluoruro con aditivos que les confieren propiedades especiales.<\/strong><br \/>\n<strong>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).<\/strong><br \/>\n<strong>Otro componente habitual de los fundentes es el NaF, que forma un eut\u00e9ctico ternario con KCl y NaCl con un punto de fusi\u00f3n de 607 \u00b0C.<\/strong><br \/>\n<strong>Un fundente de recubrimiento habitual contiene aproximadamente 47,5% de NaCl, 47,5% de KCl y 5% de sal fluorada.<\/strong><br \/>\n<strong>Es importante que tenga un punto de fusi\u00f3n bajo, ya que esto mejorar\u00e1 la fluidez del fundente de fundici\u00f3n.<\/strong><br \/>\n<strong>Otros fundentes de recubrimiento se basan en MgCl\u2082-KCl, que forma un eut\u00e9ctico de bajo punto de fusi\u00f3n a 424 \u00b0C, o en la carnalita (MgCl\u2082\u00d7KCl), que se funde a 485 \u00b0C.<\/strong><br \/>\n<strong>Estos fundentes de recubrimiento tienen una gran fluidez y pueden formar una capa fina sobre la superficie del material fundido.<\/strong><br \/>\n<strong>Sin embargo, el MgCl\u2082 es bastante caro, por lo que se utiliza principalmente en fundentes sin sodio para aleaciones que contienen m\u00e1s del 2 % en peso de magnesio.<\/strong><br \/>\n<strong>\u201dTambi\u00e9n pueden utilizarse cuando sea importante eliminar el calcio de aleaciones con un contenido de magnesio bastante elevado\u00bb.\u201d<\/strong><br \/>\n<strong>T.A. Utigard, K. Friesen, R.R. Roy, J. Lim, A. Silny y C. Dupuis (\u00abLas propiedades y usos de los fundentes en el procesamiento del aluminio fundido\u00bb), noviembre de 1998, p\u00e1g. 38.<\/strong><\/p>\n<p><strong>Utiliza una lanza de grafito para hacer pasar nitr\u00f3geno a burbujas a trav\u00e9s del aluminio fundido antes de verterlo. As\u00ed te asegurar\u00e1s de que no haya poros de gas en tus piezas fundidas. Yo suelo hacerlo solo cuando fundo una pieza que tiene que quedar muy pulida. Aparte de eso, solo uso un poco de fundente Coveral, uno comercial. Si controlas la temperatura, utilizas aluminio limpio y no tardas demasiado en preparar el metal fundido para verterlo, te bastar\u00e1 con usar muy poco fundente y tampoco tendr\u00e1s fundidos con burbujas de gas.<\/strong><\/p>\n<p><img class=\"alignnone wp-image-2631\" title=\"Fundente para fundici\u00f3n de aluminio\" src=\"http:\/\/www.adtechamm.com\/wp-content\/uploads\/2017\/09\/\u7cbe\u70bc\u5242.jpg\" alt=\"Fundente para fundici\u00f3n de aluminio\" width=\"643\" height=\"482\" srcset=\"https:\/\/www.adtechamm.com\/wp-content\/uploads\/2017\/09\/\u7cbe\u70bc\u5242.jpg 800w, https:\/\/www.adtechamm.com\/wp-content\/uploads\/2017\/09\/\u7cbe\u70bc\u5242-300x225.jpg 300w, https:\/\/www.adtechamm.com\/wp-content\/uploads\/2017\/09\/\u7cbe\u70bc\u5242-768x576.jpg 768w, https:\/\/www.adtechamm.com\/wp-content\/uploads\/2017\/09\/\u7cbe\u70bc\u5242-700x525.jpg 700w\" sizes=\"(max-width: 643px) 100vw, 643px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>Composition of Aluminum Casting Fluxs Aluminum Casting Flux is a mixture of Potassium Chloride and Sodium Chloride. Pre-melt the Flux and pour it into the ingots. Little chunks of the Fluxs thrown into the aluminum&#8230; before, during, or after the melting process&#8230;. will melt at&#8230;<\/p>","protected":false},"author":1,"featured_media":2937,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[52],"tags":[765],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Composition of Aluminum Casting Fluxs<\/title>\n<meta name=\"description\" content=\"Aluminum Casting Flux is a mixture of Potassium Chloride and Sodium Chloride. Pre-melt the Flux and pour it into the ingots. 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