{"id":5072,"date":"2020-09-25T05:37:09","date_gmt":"2020-09-25T05:37:09","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5072"},"modified":"2020-09-25T06:37:51","modified_gmt":"2020-09-25T06:37:51","slug":"impurity-removal","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/impurity-removal\/","title":{"rendered":"Eliminaci\u00f3n de impurezas"},"content":{"rendered":"

La eliminaci\u00f3n de impurezas es una etapa importante en el proceso de fundici\u00f3n de aluminio. M\u00e1s del 90% de las inclusiones no met\u00e1licas presentes en las aleaciones de aluminio son inclusiones de al\u00famina, entre las que se incluyen la pel\u00edcula de \u00f3xido presente en la superficie de los lingotes de aluminio o de la chatarra de aluminio utilizada como carga del horno, as\u00ed como la oxidaci\u00f3n del aluminio durante el proceso de fundici\u00f3n. Otras inclusiones de \u00f3xido son, principalmente, \u00f3xidos producidos por la reducci\u00f3n del material de revestimiento por parte del aluminio, as\u00ed como cloruros, nitruros y carburos generados durante la purificaci\u00f3n del aluminio fundido.<\/p>\n

El proceso de purificaci\u00f3n para la eliminaci\u00f3n de impurezas de la aleaci\u00f3n de aluminio se divide en dos etapas: el refinado en horno y el refinado en l\u00ednea. Existen tres m\u00e9todos para eliminar las inclusiones gaseosas: el m\u00e9todo de difusi\u00f3n de gas inerte, el m\u00e9todo de purificaci\u00f3n con gas mixto de cloro y el m\u00e9todo de refinado con chorro de fundente y gas inerte. Los m\u00e9todos para eliminar las inclusiones no met\u00e1licas incluyen principalmente la filtraci\u00f3n por medios filtrantes, la adsorci\u00f3n y la disoluci\u00f3n. Los m\u00e9todos de filtraci\u00f3n por medios filtrantes incluyen la filtraci\u00f3n con tela de vidrio, filtro cer\u00e1mico de espuma<\/a> filtraci\u00f3n por placas, filtro tubular y filtraci\u00f3n con bolas de al\u00famina. Gracias al mecanismo asociado al gas de escoria y al principio de adsorci\u00f3n por tensi\u00f3n, tambi\u00e9n es posible eliminar algunas part\u00edculas finas de inclusiones no met\u00e1licas durante el proceso de desgasificaci\u00f3n con gas inerte. La criolita presente en el fundente de refinado puede disolver el Al\u2082O\u2083, extraer el aluminio fundido y, adem\u00e1s, lograr la eliminaci\u00f3n de impurezas.<\/p>\n

\"Eliminaci\u00f3n<\/p>\n

AdTech se especializa en resolver el problema de las impurezas en el aluminio l\u00edquido. AdTech ofrece fundente de refinado<\/a>, unidad de desgasificaci\u00f3n, filtro de espuma cer\u00e1mica y unidad de filtrado CFF para la eliminaci\u00f3n de impurezas. Los equipos de desgasificaci\u00f3n y filtrado en l\u00ednea fabricados por AdTech se instalan entre el horno y la m\u00e1quina de colada, con el fin de eliminar el hidr\u00f3geno y otros residuos presentes en el aluminio fundido y sus aleaciones que afectan a su calidad y a sus propiedades mec\u00e1nicas.<\/p>\n

El filtro de espuma cer\u00e1mica puede retener eficazmente las inclusiones de metal l\u00edquido y purificar el metal fundido. En cuanto a la investigaci\u00f3n sobre el mecanismo de filtraci\u00f3n y purificaci\u00f3n de metales, existen principalmente los siguientes puntos de vista: el mecanismo de filtraci\u00f3n por tamiz, torta y lecho profundo; el mecanismo de separaci\u00f3n por flotaci\u00f3n; el mecanismo de adsorci\u00f3n y el mecanismo de rectificaci\u00f3n.<\/p>","protected":false},"excerpt":{"rendered":"

Impurity removal is an important step for aluminum casting process. More than 90% of the non-metallic inclusions in aluminum alloys are alumina inclusions, including the…<\/p>","protected":false},"author":1,"featured_media":5133,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5072","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nImpurity Removal in Aluminum Alloy Casting Process<\/title>\n<meta name=\"description\" content=\"Impurity removal is an important step for aluminum casting. 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