{"id":1989,"date":"2020-05-21T08:43:57","date_gmt":"2020-05-21T08:43:57","guid":{"rendered":"http:\/\/alalloycasting.com\/?p=1989"},"modified":"2020-09-03T06:08:52","modified_gmt":"2020-09-03T06:08:52","slug":"filtering-function","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/filtering-function\/","title":{"rendered":"Funci\u00f3n de filtrado"},"content":{"rendered":"

La tecnolog\u00eda de filtraci\u00f3n con espuma cer\u00e1mica surgi\u00f3 a finales de la d\u00e9cada de 1970. Esta tecnolog\u00eda ha demostrado una gran vitalidad. Se ha utilizado ampliamente en la colada semicontinua y en piezas de fundici\u00f3n moldeadas en Estados Unidos, Jap\u00f3n, Canad\u00e1, el Reino Unido, Francia y Suiza. La tecnolog\u00eda de filtraci\u00f3n con espuma cer\u00e1mica se considera un gran avance en la industria del aluminio. La funci\u00f3n de filtrado de los filtros de espuma cer\u00e1mica se utiliza ampliamente en la mayor\u00eda de las fundiciones de aluminio.<\/p>\n

AdTech lleva desarrollando equipos de purificaci\u00f3n de aluminio l\u00edquido desde 2012. El unidad de desgasificaci\u00f3n<\/a> y Equipos de filtraci\u00f3n CFF<\/a> Han sido reconocidos y utilizados por clientes nacionales y extranjeros, especialmente en sectores como el aeroespacial, la aviaci\u00f3n, la electr\u00f3nica y la inform\u00e1tica.<\/p>\n

Funci\u00f3n de filtrado del filtro de espuma cer\u00e1mica<\/h2>\n

En el proceso de refundici\u00f3n de aleaciones de aluminio, se generan inclusiones no met\u00e1licas debido a la impureza de la carga y a la influencia del entorno externo. Al mismo tiempo, en el proceso de fundici\u00f3n, debido a la turbulencia del metal, las gotas y las salpicaduras provocadas por la amplia superficie de metal l\u00edquido en contacto con el aire, la pel\u00edcula de \u00f3xido formada por el l\u00edquido tambi\u00e9n se introduce en el aluminio fundido. Las inclusiones en el aluminio fundido rompen la continuidad del metal. Esto reduce las prestaciones de procesamiento y la facilidad de uso de la aleaci\u00f3n de aluminio, lo que afecta a la calidad de la fundici\u00f3n.<\/p>\n

Por lo tanto, durante la limpieza de la carga del horno y el refinado del metal l\u00edquido, es necesario eliminar a\u00fan m\u00e1s la escoria secundaria presente en el interior de la masa fundida y en el proceso de flujo, y volver a filtrarla.<\/p>\n

En un sistema de flujo de este tipo, dado que la pel\u00edcula superficial del aluminio l\u00edquido en la c\u00e9lula de flujo y la placa de flujo es continua, no es necesario que el filtro de espuma cer\u00e1mica se sit\u00fae muy cerca del cristalizador.<\/p>\n

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

La placa filtrante sumergida en el aluminio fundido est\u00e1 bien sellada con algod\u00f3n de silicato a su alrededor. Y el aluminio l\u00edquido solo puede pasar a trav\u00e9s de los orificios en zigzag del filtro de espuma cer\u00e1mica. Esto se debe al efecto combinado de la presi\u00f3n axial del flujo de l\u00edquido, la fricci\u00f3n, la adsorci\u00f3n superficial y la fuerza qu\u00edmica. Las inclusiones transportadas por el aluminio fundido quedan firmemente retenidas en los poros del filtro de espuma cer\u00e1mica. La superficie y el espacio interior de la cavidad quedan separados de la fase l\u00edquida met\u00e1lica.<\/p>\n

El efecto de la escoria de aluminio depende del tama\u00f1o de los poros y del grosor del filtro de espuma cer\u00e1mica, as\u00ed como de la velocidad a la que el aluminio fundido atraviesa el filtro. Cuanto m\u00e1s grueso sea el filtro de espuma cer\u00e1mica, menor ser\u00e1 el tama\u00f1o de los poros y, cuanto m\u00e1s tiempo tarde el aluminio l\u00edquido en atravesar el filtro, mayor ser\u00e1 la probabilidad de que se produzcan colisiones. Y mayor es la probabilidad de que las inclusiones queden retenidas, se depositen y se adsorban en la pared de los poros.<\/p>\n

Cabe se\u00f1alar que cuando la velocidad del filtrado que fluye a trav\u00e9s del filtro de espuma cer\u00e1mica<\/a> Si es demasiado baja, no resulta f\u00e1cil que se adsorba y fluya con facilidad a trav\u00e9s de los poros del filtro. Cuando el caudal es demasiado alto, el flujo de metal l\u00edquido arrastrar\u00e1 las inclusiones s\u00f3lidas de la pared del orificio y podr\u00eda llev\u00e1rselas. El caudal \u00f3ptimo se determina en la pr\u00e1ctica de producci\u00f3n.<\/p>","protected":false},"excerpt":{"rendered":"

Foam ceramic filter technology came out in the late 1970s. The foam ceramic filtration technology has shown great vitality. It has been widely used in…<\/p>","protected":false},"author":1,"featured_media":4310,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,138],"tags":[220,221,484,89,483],"class_list":["post-1989","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-foam-filter","category-seo","tag-filter-for-continuous-casting","tag-filtering-function","tag-liquid-aluminum-filter","tag-molten-aluminum-filter","tag-molten-metal-filter"],"yoast_head":"\nFiltering Function of Ceramic Foam Filter, Filter for Continuous Casting<\/title>\n<meta name=\"description\" content=\"Filtering function of ceramic foam filter has been widely used in semi-continuous casting and shaped castings in the United States, Japan.\" \/>\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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