{"id":10806,"date":"2021-10-23T07:37:16","date_gmt":"2021-10-23T07:37:16","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10806"},"modified":"2021-10-22T07:42:04","modified_gmt":"2021-10-22T07:42:04","slug":"ceramic-foam-filters-for-metal-purification","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/ceramic-foam-filters-for-metal-purification\/","title":{"rendered":"Filtros de espuma cer\u00e1mica para la purificaci\u00f3n de metales"},"content":{"rendered":"<p>Los filtros de espuma cer\u00e1mica para la purificaci\u00f3n de metales funcionan en dos modos: la filtraci\u00f3n por torta, en la que las part\u00edculas en suspensi\u00f3n son m\u00e1s grandes que el tama\u00f1o de los poros del filtro y se depositan en la entrada del mismo, formando una torta cuyo espesor aumenta constantemente, lo que constituye un medio filtrante eficaz. Filtraci\u00f3n profunda, en la que el tama\u00f1o de las part\u00edculas en suspensi\u00f3n es inferior al tama\u00f1o de los poros del filtro, por lo que estas penetran en el filtro y se depositan en su interior.<\/p>\n<p>La presencia de inclusiones en las aleaciones de aluminio tiene efectos negativos sobre la calidad y las propiedades de los productos de aluminio de muchas formas diferentes. Esto no favorece la resistencia a la fatiga de las aleaciones de aluminio utilizadas espec\u00edficamente en la industria del autom\u00f3vil y la aviaci\u00f3n.<\/p>\n<p>La presencia de inclusiones tambi\u00e9n provoca defectos en el procesamiento: vetas longitudinales en los productos laminados (en el caso de inclusiones de alta dureza), desprendimientos en los productos forjados y roturas durante la deformaci\u00f3n pl\u00e1stica intensa (extrusi\u00f3n, laminaci\u00f3n y moldeo).<\/p>\n<p>En la industria conservera, la restricci\u00f3n sobre el contenido de impurezas es estricta: la concentraci\u00f3n de impurezas debe ser inferior a 10^-4 ppm para cumplir con los requisitos del fabricante de conservas.<\/p>\n<p>En el caso del aluminio l\u00edquido, la eliminaci\u00f3n de inclusiones reviste una importancia especial. Aunque se han realizado esfuerzos para reducir la concentraci\u00f3n de inclusiones, la elevada reactividad del aluminio l\u00edquido y la presencia de materiales refractarios provocar\u00e1n inevitablemente la formaci\u00f3n de nuevas inclusiones en el metal l\u00edquido, desde la fase de procesamiento de la masa fundida hasta la colada de los productos semiacabados.<\/p>\n<p>Los filtros de espuma cer\u00e1mica para la purificaci\u00f3n de metales se utilizan para eliminar las inclusiones del aluminio fundido. <a href=\"http:\/\/www.alalloycasting.com\/es\/ceramic-foam-filters-foundry\/\">Filtros de espuma cer\u00e1mica<\/a> Se utilizan ampliamente en la purificaci\u00f3n por filtraci\u00f3n de metales fundidos. Est\u00e1n fabricados con espuma de poliuretano, secados y sinterizados. Su porosidad alcanza valores de entre 80% y 90%. El filtro de espuma cer\u00e1mica presenta una estructura reticular y posee una cierta resistencia. Puede soportar la diferencia de presi\u00f3n de la superficie del metal fundido y la influencia del flujo del metal, pero es fr\u00e1gil y quebradizo. Gracias a la estructura precisa del material, a su calidad uniforme y a su gran superficie, el efecto de filtraci\u00f3n es muy bueno.<\/p>","protected":false},"excerpt":{"rendered":"<p>Ceramic foam filters for metal purification are filtered in two modes: cake filtration, where suspended particles are larger than the pore size of the filter,&hellip;<\/p>","protected":false},"author":1,"featured_media":10809,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10806","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ceramic Foam Filters for Metal Purification, CFF Filtering<\/title>\n<meta name=\"description\" content=\"Ceramic foam filters for metal purification are filtered in two 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