{"id":6454,"date":"2020-11-13T08:24:31","date_gmt":"2020-11-13T08:24:31","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6454"},"modified":"2020-11-13T08:24:31","modified_gmt":"2020-11-13T08:24:31","slug":"aluminum-foundry-flux","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/aluminum-foundry-flux\/","title":{"rendered":"Fundente para fundici\u00f3n de aluminio"},"content":{"rendered":"

En la actualidad, la composici\u00f3n qu\u00edmica del fundente de aluminio utilizado en la purificaci\u00f3n del aluminio fundido en aleaci\u00f3n se compone principalmente de cloruro, fluoruro, nitrato, sulfato, carbonato y criolita, siendo el NaCl, el KCl y el MgCl\u2082 los m\u00e1s habituales.<\/p>\n

Tambi\u00e9n se utiliza con frecuencia una mezcla de MgCl\u2082 y KCl como matriz del fundente para fundici\u00f3n de aluminio en el procesamiento en estado fundido de aleaciones de aluminio que contienen magnesio. Adem\u00e1s, una determinada proporci\u00f3n de la mezcla tambi\u00e9n puede contribuir a humedecer y adsorber las inclusiones del metal fundido, y la mezcla eut\u00e9ctica que forma tiene un punto de fusi\u00f3n m\u00e1s bajo, lo que permite realizar el tratamiento de purificaci\u00f3n del metal fundido a una temperatura m\u00e1s baja.<\/p>\n

La mezcla de NaCl y KCl, ampliamente utilizada en la producci\u00f3n, se emplea como matriz del fundente, que posee cierta capacidad de infiltraci\u00f3n en las inclusiones de Al\u2082O\u2083 o en la pel\u00edcula de \u00f3xido. Su \u00e1ngulo de infiltraci\u00f3n con respecto al Al\u2082O\u2083 es de solo 20 grados (26,9\u00b0 a 740 \u00b0C). Antes de que todo se fundiera, comenz\u00f3 a fluir a lo largo de la superficie de la pel\u00edcula de Al\u2082O\u2083. Las densidades del NaCl y el KCl a la temperatura de fusi\u00f3n son de aproximadamente 1,55 y 1,5, valores significativamente inferiores a la densidad del aluminio fundido, por lo que pueden extenderse bien sobre la superficie del aluminio fundido y desempe\u00f1ar una funci\u00f3n protectora. Al entrar en contacto con la pel\u00edcula de \u00f3xido de la superficie del aluminio fundido, pueden penetrar en los poros y grietas de dicha pel\u00edcula. Bajo la acci\u00f3n de la presi\u00f3n capilar de la sal de cloruro, la pel\u00edcula de \u00f3xido se tritura en part\u00edculas finas, que son adsorbidas y absorbidas. Quedan suspendidas en la capa de sal fundida. Adem\u00e1s, estas sales de cloruro de metales alcalinos o alcalinot\u00e9rreos tienen propiedades qu\u00edmicas muy estables y no reaccionan qu\u00edmicamente con el aluminio.<\/p>\n

\"Fundente<\/p>\n

Con la mejora continua de los requisitos para el tratamiento de purificaci\u00f3n de los fundidos de aluminio y aleaciones de aluminio, los defectos de la fundici\u00f3n de aluminio fundente de refinado<\/a>\u00a0Los m\u00e9todos de purificaci\u00f3n han cobrado cada vez m\u00e1s importancia, pero ya no pueden satisfacer las necesidades del aluminio y las aleaciones de aluminio de alto rendimiento, ni los requisitos de protecci\u00f3n medioambiental. Una forma eficaz de resolver este problema consiste en llevar a cabo la purificaci\u00f3n f\u00edsica del fundente a partir de las condiciones termodin\u00e1micas de su configuraci\u00f3n y del cumplimiento de las condiciones cin\u00e9ticas del proceso de purificaci\u00f3n del aluminio y las aleaciones de aluminio fundidos. Las ventajas de la purificaci\u00f3n f\u00edsica del fundente se han comprobado de forma eficaz en un gran n\u00famero de investigaciones y pr\u00e1cticas de producci\u00f3n relacionadas, y se ha convertido en la clave para mejorar el nivel de purificaci\u00f3n de los fundidos de aluminio y aleaciones de aluminio.<\/p>","protected":false},"excerpt":{"rendered":"

At present, the chemical composition of the aluminum foundry flux used in the purification of aluminum alloy melt is mostly chloride, fluoride, nitrate, sulfate, carbonate…<\/p>","protected":false},"author":1,"featured_media":6456,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120,138],"tags":[],"class_list":["post-6454","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fluxes","category-seo"],"yoast_head":"\nAluminum Foundry Flux -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The chemical composition of the aluminum foundry flux used in the purification of aluminum alloy melt is mostly chloride, fluoride, nitrate.\" \/>\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\/aluminum-foundry-flux\/\" 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