{"id":6608,"date":"2020-11-20T06:18:43","date_gmt":"2020-11-20T06:18:43","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6608"},"modified":"2022-02-22T08:52:39","modified_gmt":"2022-02-22T08:52:39","slug":"fluxes-for-aluminum-casting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/fluxes-for-aluminum-casting\/","title":{"rendered":"Fundentes para la fundici\u00f3n de aluminio"},"content":{"rendered":"

Los fundentes para la fundici\u00f3n de aluminio se utilizan ampliamente en la producci\u00f3n de aluminio primario y secundario para mejorar la calidad de la masa fundida y la tasa de recuperaci\u00f3n del aluminio met\u00e1lico.<\/p>\n

Los fundentes para la fundici\u00f3n de aluminio tienen cuatro funciones:<\/p>\n

En primer lugar, fundente para fundici\u00f3n de aluminio<\/a> modifica la humectabilidad del aluminio fundido respecto al \u00f3xido (al\u00famina), de modo que el aluminio fundido se separe f\u00e1cilmente del \u00f3xido (al\u00famina), con lo que la mayor parte del \u00f3xido (al\u00famina) pasa al fundente y se reduce el contenido de \u00f3xidos en el fundido.<\/p>\n

En segundo lugar, el flujo puede alterar el estado de la pel\u00edcula de \u00f3xido presente en la superficie del material fundido. Esto se debe a que es capaz de fragmentar la pel\u00edcula de \u00f3xido s\u00f3lida y densa de la superficie del material fundido en part\u00edculas finas, lo que favorece que el hidr\u00f3geno presente en el material fundido se escape a trav\u00e9s de los huecos entre las part\u00edculas de la pel\u00edcula de \u00f3xido y se libere a la atm\u00f3sfera.<\/p>\n

En tercer lugar, la existencia de la capa de flujo puede aislar el contacto entre el vapor de agua de la atm\u00f3sfera y el aluminio fundido, lo que dificulta que el hidr\u00f3geno penetre en el aluminio fundido y, al mismo tiempo, evita que este se oxide y se inflame.<\/p>\n

En cuarto lugar, el fundente puede absorber los \u00f3xidos presentes en el aluminio fundido, lo que permite purificarlo. En resumen, la funci\u00f3n del fundente en el refinado para eliminar inclusiones se consigue principalmente mediante la adsorci\u00f3n, la disoluci\u00f3n y la interacci\u00f3n qu\u00edmica con las pel\u00edculas de \u00f3xido y las inclusiones no met\u00e1licas presentes en el fundido.<\/p>\n

\"Fundentes<\/p>\n

Existen muchos tipos de fundentes que se utilizan en la fundici\u00f3n de aleaciones de aluminio, los cuales pueden dividirse en dos categor\u00edas: agente de recubrimiento<\/a> y agente refinador<\/a>. Cualquier fundente que se utilice en el proceso de fundici\u00f3n de aleaciones de aluminio debe cumplir las siguientes condiciones.<\/p>\n

    \n
  1. El punto de fusi\u00f3n debe ser inferior a la temperatura de fusi\u00f3n de la aleaci\u00f3n de aluminio.<\/li>\n
  2. La densidad debe ser inferior a la de la aleaci\u00f3n de aluminio.<\/li>\n
  3. Puede absorber y disolver las inclusiones presentes en la masa fundida, as\u00ed como eliminar el gas de la misma.<\/li>\n
  4. No debe interactuar qu\u00edmicamente con el metal ni con el revestimiento del horno. Si interact\u00faa con el metal, solo debe producir un gas inerte insoluble en el metal, y el fundente debe ser insoluble en el metal fundido.<\/li>\n
  5. La absorci\u00f3n de humedad debe ser reducida y la presi\u00f3n de evaporaci\u00f3n debe ser baja.<\/li>\n
  6. No debe contener ni generar impurezas ni gases nocivos.<\/li>\n
  7. Debe tener la viscosidad y la fluidez adecuadas.<\/li>\n
  8. F\u00e1cil de fabricar: barato.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    Fluxes for aluminum casting are widely used in the production of primary aluminum and secondary aluminum to improve the quality of the melt and the…<\/p>","protected":false},"author":1,"featured_media":6610,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-6608","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"\nFluxes for Aluminum Casting -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Fluxes for aluminum casting are widely used in the production of primary aluminum and secondary aluminum to improve the quality of the melt.\" \/>\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\/fluxes-for-aluminum-casting\/\" \/>\n<meta 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