{"id":10536,"date":"2021-10-12T07:53:36","date_gmt":"2021-10-12T07:53:36","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10536"},"modified":"2021-10-12T07:53:36","modified_gmt":"2021-10-12T07:53:36","slug":"aluminum-smelter-fluxes","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/aluminum-smelter-fluxes\/","title":{"rendered":"Fundentes para fundiciones de aluminio"},"content":{"rendered":"<p>Desde hace muchos a\u00f1os, las fundiciones utilizan fundentes para la fundici\u00f3n de aluminio con el fin de reducir los residuos de la aleaci\u00f3n, controlar la formaci\u00f3n de escoria y eliminar las impurezas de la aleaci\u00f3n; de lo contrario, estas impurezas afectar\u00edan a la calidad.<\/p>\n<p>Los fundentes utilizados en las fundiciones de aluminio suelen ser una mezcla de sales de cloruro y fluoruro, que minimizan la penetraci\u00f3n del hidr\u00f3geno atmosf\u00e9rico y absorben las inclusiones no met\u00e1licas suspendidas en la masa fundida.<\/p>\n<p>Las aleaciones de aluminio tienden a absorber hidr\u00f3geno y se oxidan con facilidad cuando las aleaciones fundidas se exponen a la atm\u00f3sfera o a la humedad. El proceso de oxidaci\u00f3n da lugar a la formaci\u00f3n de una pel\u00edcula continua de al\u00famina en la superficie. Aunque esta pel\u00edcula permanece inalterable, protege a la aleaci\u00f3n fundida de una mayor oxidaci\u00f3n.<\/p>\n<p>En la fundici\u00f3n, el movimiento forma parte del proceso, lo que provoca grietas en la superficie, una mayor oxidaci\u00f3n y un r\u00e1pido engrosamiento de la pel\u00edcula superficial. Esta capa que se va engrosando continuamente tambi\u00e9n queda recubierta de aluminio no oxidado, lo que da lugar a la \u201cescoria h\u00fameda\u201d y supone un gran desperdicio de aleaciones. En una escoria h\u00fameda t\u00edpica, solo entre 20% y 40% es al\u00famina, y el resto est\u00e1 compuesto por aluminio encapsulado. Esto supone un desperdicio de entre 5% y 10% del total de metal fundido.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10380\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/09\/Aluminum-Slagging-Agent.jpg\" alt=\"Agente de escoria de aluminio\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/09\/Aluminum-Slagging-Agent.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/09\/Aluminum-Slagging-Agent-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><a href=\"http:\/\/www.alalloycasting.com\/es\/covering-flux\/\">Flujo de recubrimiento<\/a> y los fundentes de escoria se utilizan para reducir la oxidaci\u00f3n y la adsorci\u00f3n de hidr\u00f3geno mediante la formaci\u00f3n de una \u201ccapa\u201d de barrera de fusi\u00f3n en la superficie de la aleaci\u00f3n, y estos problemas se resuelven reduciendo el espesor de la capa de escoria. Dado que la costra no se espesa tanto, estos fundentes pueden reducir la cantidad de metal l\u00edquido en suspensi\u00f3n en un 60% \u2013 80%.<\/p>\n<p>Adem\u00e1s de la oxidaci\u00f3n y la absorci\u00f3n de gases, las aleaciones de aluminio tambi\u00e9n son vulnerables a las impurezas met\u00e1licas y no met\u00e1licas en suspensi\u00f3n en las aleaciones fundidas. Las impurezas y la al\u00famina permanecen en suspensi\u00f3n debido a que son porosas y contienen algo de gas que se adhiere y queda atrapado en los poros. Estas impurezas pueden introducirse en la masa fundida durante las operaciones de carga, procesamiento o manipulaci\u00f3n, y deben eliminarse si se quiere mantener la calidad y la uniformidad de la pieza fundida final. El fundente de limpieza se utiliza para eliminar las inclusiones no met\u00e1licas de la masa fundida.<\/p>","protected":false},"excerpt":{"rendered":"<p>For many years, foundries have used aluminum smelter fluxes to reduce alloy waste, control scum formation, and remove impurities in the alloy, otherwise, these impurities&hellip;<\/p>","protected":false},"author":1,"featured_media":10537,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-10536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fluxes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Smelter Fluxes -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Foundries have used aluminum smelter fluxes to reduce alloy waste, control scum formation, 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