{"id":10612,"date":"2021-10-14T09:07:06","date_gmt":"2021-10-14T09:07:06","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10612"},"modified":"2021-10-14T09:07:06","modified_gmt":"2021-10-14T09:07:06","slug":"furnace-refining-with-flux","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/furnace-refining-with-flux\/","title":{"rendered":"Refinado en horno con fundente"},"content":{"rendered":"

El refinado en horno con fundente se utiliza ampliamente en la fundici\u00f3n de aluminio. El objetivo principal de la tecnolog\u00eda de purificaci\u00f3n del aluminio fundido es mejorar continuamente la pureza del metal fundido, buscar constantemente tecnolog\u00edas de purificaci\u00f3n de alta eficiencia y bajo coste, y satisfacer las necesidades de desarrollo de la tecnolog\u00eda de purificaci\u00f3n del metal fundido en la transformaci\u00f3n del aluminio.<\/p>\n

Las inclusiones en los fundidos de aluminio y aleaciones de aluminio son principalmente \u00f3xidos de aluminio. El perjuicio que causan las inclusiones al aluminio y a las aleaciones de aluminio no radica \u00fanicamente en sus efectos adversos sobre las propiedades del material. Adem\u00e1s, el contenido de inclusiones influye en cierta medida en el contenido de hidr\u00f3geno del fundido, y las inclusiones act\u00faan como un buen portador de hidr\u00f3geno en el mismo. Por lo tanto, el contenido de inclusiones tambi\u00e9n influye en la cantidad de porosidad o poros diminutos en la pieza fundida.<\/p>\n

\"\"<\/p>\n

Tras a\u00f1adir una determinada cantidad de fundente a los fundidos de aluminio y aleaciones de aluminio, es posible reducir de forma eficaz el contenido de inclusiones del fundido. El refinado en horno con fundente desempe\u00f1a un papel fundamental en el proceso de eliminaci\u00f3n de impurezas del fundido, principalmente en dos aspectos:<\/p>\n

(1) La solubilidad en estado s\u00f3lido del fundente en el aluminio y las aleaciones de aluminio es baja. Durante la solidificaci\u00f3n de la masa fundida, el fundente se concentra en los l\u00edmites de grano o en la interfaz s\u00f3lido-l\u00edquido, y las inclusiones de \u00f3xido tambi\u00e9n se concentran en los l\u00edmites de grano durante el proceso de solidificaci\u00f3n, lo que proporciona unas buenas condiciones para la reacci\u00f3n de contacto entre el fundente y las inclusiones de Al\u2082O\u2083. Las inclusiones de aluminio se reducen a aluminio elemental y vuelven a la masa fundida. El producto de la reacci\u00f3n entre el fundente y la al\u00famina es un \u00f3xido de alto punto de fusi\u00f3n, cuya densidad es mayor que la de la masa fundida de aluminio. Por lo tanto, se puede dejar que se hunda hasta el fondo del crisol para su eliminaci\u00f3n por decantaci\u00f3n, logrando as\u00ed el objetivo de eliminar las impurezas.<\/p>\n

(2) El flujo es un elemento tensioactivo. Cuando el flujo se utiliza como superficie agente de recubrimiento<\/a>, se forma un \u00f3xido complejo del fundente en la superficie del material fundido, lo que hace que la pel\u00edcula de \u00f3xido superficial sea m\u00e1s densa y, adem\u00e1s, evita la oxidaci\u00f3n del material fundido.<\/p>","protected":false},"excerpt":{"rendered":"

Furnace refining with flux is widely used in aluminum foundry. The main goal of aluminum melt purification technology is to continuously improve the purity of…<\/p>","protected":false},"author":1,"featured_media":10613,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10612","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nFurnace Refining with Flux used in Aluminum Foundry<\/title>\n<meta name=\"description\" content=\"Furnace refining with flux is widely used in aluminum foundry. 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