{"id":10164,"date":"2021-09-02T02:05:33","date_gmt":"2021-09-02T02:05:33","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10164"},"modified":"2021-09-02T02:05:33","modified_gmt":"2021-09-02T02:05:33","slug":"master-alloys","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/master-alloys\/","title":{"rendered":"Aleaciones maestras"},"content":{"rendered":"

En la actualidad, se suelen utilizar diversas aleaciones madre para sustituir a los aditivos, ya que estas tienen un punto de fusi\u00f3n bajo y son m\u00e1s f\u00e1ciles de fundir de forma r\u00e1pida y uniforme en el ba\u00f1o de aluminio. Sin embargo, muchos fabricantes utilizan chatarra de aluminio o lingotes de aluminio de baja calidad para producir aleaciones madre, lo que hace que estas contengan m\u00e1s impurezas. Al utilizar aleaciones maestras, estas impurezas pasan al ba\u00f1o de fundici\u00f3n y provocan su contaminaci\u00f3n.<\/p>\n

A la hora de fundir aleaciones, suelen existir tres formas de a\u00f1adir elementos de aleaci\u00f3n: una consiste en a\u00f1adir metales puros directamente al aluminio fundido, como el cobre, el magnesio, el zinc, el silicio y otros metales. La otra consiste en preparar previamente los elementos de aleaci\u00f3n en forma de aleaci\u00f3n madre. A continuaci\u00f3n, esta se a\u00f1ade al aluminio fundido en forma de aleaci\u00f3n madre. En la actualidad, lo m\u00e1s habitual es a\u00f1adir diversos aditivos met\u00e1licos al aluminio fundido. Adem\u00e1s, existe otro m\u00e9todo de adici\u00f3n que consiste en a\u00f1adir sales o compuestos que contengan elementos de aleaci\u00f3n, y reducir dichos elementos mediante una reacci\u00f3n de sustituci\u00f3n con el metal base para que pasen a formar parte del ba\u00f1o de fusi\u00f3n.<\/p>\n

El objetivo de utilizar aditivos para aleaciones de aluminio<\/a> es facilitar la incorporaci\u00f3n de algunos elementos de aleaci\u00f3n que tienen un punto de fusi\u00f3n m\u00e1s alto y que no se funden, oxidan ni volatilizan con facilidad, con el fin de controlar con mayor precisi\u00f3n la composici\u00f3n de la aleaci\u00f3n de aluminio. Adem\u00e1s, el uso de una aleaci\u00f3n madre como carga puede evitar el sobrecalentamiento de la masa fundida, acortar el tiempo de fundici\u00f3n y reducir la p\u00e9rdida de metal.<\/p>\n

\"\"<\/p>\n

Los aditivos para aleaciones de aluminio utilizados deben cumplir, en la medida de lo posible, los siguientes requisitos b\u00e1sicos:<\/strong><\/p>\n

(1) El punto de fusi\u00f3n debe ser inferior o similar a la temperatura de fusi\u00f3n de la aleaci\u00f3n de aluminio;
\n(2) El contenido de elementos de aleaci\u00f3n es lo m\u00e1s elevado posible y la composici\u00f3n es uniforme;
\n(3) Bajo contenido en impurezas, gases e inclusiones no met\u00e1licas:
\n(4) Es lo suficientemente quebradizo, se rompe con facilidad y resulta pr\u00e1ctico para los ingredientes;
\n(5) No es f\u00e1cil que se corroa y no deber\u00eda desintegrarse en polvo cuando se almacena a temperatura y presi\u00f3n atmosf\u00e9ricas.<\/p>","protected":false},"excerpt":{"rendered":"

At present, various master alloys are generally used to replace additives, because master alloys have a low melting point and are easier to quickly and…<\/p>","protected":false},"author":1,"featured_media":10165,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6144],"tags":[12517,12516],"class_list":["post-10164","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-metal-additive","tag-aluminum-alloy-additive","tag-master-alloys-for-aluminum-melt"],"yoast_head":"\nMaster Alloys for Aluminum Melt, Aluminum Alloy Additive<\/title>\n<meta name=\"description\" content=\"At present, various master alloys are generally used to replace additives, because master alloys have a low melting point.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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