{"id":8351,"date":"2021-04-08T03:49:01","date_gmt":"2021-04-08T03:49:01","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8351"},"modified":"2021-04-08T03:49:01","modified_gmt":"2021-04-08T03:49:01","slug":"ceramic-foam-filtering","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/ceramic-foam-filtering\/","title":{"rendered":"Filtraci\u00f3n con espuma cer\u00e1mica"},"content":{"rendered":"<p>El m\u00e9todo de filtrado con espuma cer\u00e1mica se utiliza para filtrar y eliminar los s\u00f3lidos arrastrados de las aleaciones de aluminio fundido. El filtro de espuma cer\u00e1mica presenta una estructura de c\u00e9lula abierta, que se caracteriza por una pluralidad de huecos interconectados rodeados por una malla cer\u00e1mica. El uso de <a href=\"http:\/\/www.alalloycasting.com\/es\/ceramic-foam-filters-for-molten-aluminum\/\">filtros de espuma cer\u00e1mica<\/a> mejora considerablemente la eficacia de la filtraci\u00f3n en el aluminio fundido.<\/p>\n<p>En la pr\u00e1ctica, el aluminio fundido suele contener s\u00f3lidos arrastrados que resultan perjudiciales para el producto met\u00e1lico fundido final. Estos s\u00f3lidos arrastrados suelen proceder de tres fuentes.<\/p>\n<p>Algunas son part\u00edculas de \u00f3xido de aluminio que son arrastradas hacia la corriente l\u00edquida desde la capa de \u00f3xido flotante en su superficie, y otras part\u00edculas arrastradas son fragmentos del revestimiento del horno, la canaleta de transferencia y otras partes del equipo de manipulaci\u00f3n del aluminio fundido, que se erosionan y quedan arrastradas por la corriente de aluminio, mientras que otras part\u00edculas son precipitados de impurezas insolubles, como compuestos intermet\u00e1licos, boruros, carburos o precipitados de otros compuestos del aluminio, como los cloruros. Cuando estas inclusiones aparecen en el producto fundido final tras la solidificaci\u00f3n del aluminio fundido, hacen que dicho producto final sea menos d\u00factil o presente unas caracter\u00edsticas de acabado deficientes. Por consiguiente, es conveniente eliminar los s\u00f3lidos arrastrados de la corriente de aluminio fundido antes de que se moldee en un cuerpo s\u00f3lido que pueda utilizarse tal cual o someterse a operaciones de conformado, como laminado, forjado, extrusi\u00f3n, etc.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8204\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/03\/Purification-Treatment-of-Aluminum-Melt.jpg\" alt=\"Tratamiento de purificaci\u00f3n del aluminio fundido\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Purification-Treatment-of-Aluminum-Melt.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Purification-Treatment-of-Aluminum-Melt-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Los procesos de filtrado para eliminar los s\u00f3lidos arrastrados de los l\u00edquidos se llevan a cabo haciendo pasar el l\u00edquido cargado de s\u00f3lidos a trav\u00e9s de un medio filtrante poroso que no deja pasar dichos s\u00f3lidos. El filtrado de metal fundido en general, y de aluminio fundido en particular, plantea problemas especiales, ya que el l\u00edquido es tan agresivo que resulta dif\u00edcil encontrar un medio filtrante capaz de resistirlo.<\/p>\n<p>En general, se utilizan dos m\u00e9todos de filtrado para eliminar los s\u00f3lidos arrastrados de las aleaciones de aluminio fundido antes de la colada. El medio filtrante m\u00e1s habitual es una malla de fibra de vidrio de tejido abierto que se coloca en la canaleta de transferencia del metal, alrededor de la boquilla, o incluso en el ba\u00f1o de metal fundido situado en la parte superior del lingote en solidificaci\u00f3n. Estas mallas de tela solo son capaces de eliminar las inclusiones de mayor tama\u00f1o del metal y se rompen con facilidad durante su uso, ya que las fibras de vidrio se debilitan mucho a la temperatura del aluminio fundido.<\/p>\n<p>En otro procedimiento conocido, el aluminio fundido se filtra a trav\u00e9s de un lecho de part\u00edculas sueltas de al\u00famina, por ejemplo, de al\u00famina tabular, pero a menudo adolece de los inconvenientes normalmente asociados a los filtros de lecho, ya que deja pasar demasiados s\u00f3lidos, existe una fuerte tendencia a la canalizaci\u00f3n que impide un uso eficiente, y el tama\u00f1o de los poros del filtro no se controla f\u00e1cilmente, sino que cambia con facilidad en condiciones de uso, de modo que, aunque inicialmente tenga las dimensiones adecuadas, no puede mantenerse de forma eficiente. Adem\u00e1s, el metal debe mantenerse constantemente fundido cuando el filtro no est\u00e1 en uso.<\/p>\n<p>Los experimentos han demostrado que el filtro de espuma cer\u00e1mica resulta especialmente \u00fatil para filtrar metal fundido, sobre todo aluminio fundido. La resistencia a altas temperaturas del filtro resulta especialmente \u00fatil en las exigentes condiciones de uso que se dan en la filtraci\u00f3n de metal fundido. Adem\u00e1s, la composici\u00f3n del filtro cer\u00e1mico no contamina los metales.<\/p>","protected":false},"excerpt":{"rendered":"<p>The ceramic foam filtering method is used to filter and remove entrained solids from molten aluminum alloys. The ceramic form filter has an open-cell structure,&hellip;<\/p>","protected":false},"author":1,"featured_media":8352,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8351","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 Filtering Molten Aluminum,Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"Experiments have proved that the ceramic foam filter is particularly useful in filtering molten metal, especially molten aluminum.\" \/>\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\/ceramic-foam-filtering\/\" 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