{"id":11494,"date":"2021-11-28T06:28:11","date_gmt":"2021-11-28T06:28:11","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11494"},"modified":"2021-11-28T06:28:11","modified_gmt":"2021-11-28T06:28:11","slug":"aluminum-alloys-filtering","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/aluminum-alloys-filtering\/","title":{"rendered":"Filtrado de aleaciones de aluminio"},"content":{"rendered":"<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 cubeta de transferencia de metal, alrededor de la boquilla, o incluso en el charco de metal fundido situado en la parte superior del lingote en proceso de solidificaci\u00f3n. Estas mallas de tela solo son capaces de eliminar las inclusiones de mayor tama\u00f1o del metal y se rompen f\u00e1cilmente durante su uso, ya que las fibras de vidrio se debilitan mucho a la temperatura del aluminio fundido.<\/p>\n<p>En otro proceso de la t\u00e9cnica anterior, el aluminio fundido se filtra a trav\u00e9s de un lecho de part\u00edculas de al\u00famina sueltas, por ejemplo, al\u00famina tabular, pero a menudo adolece de los inconvenientes que suelen asociarse a los filtros de lecho, ya que permite el paso de 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 var\u00eda con facilidad en las condiciones de uso, de modo que, aunque inicialmente tenga el tama\u00f1o adecuado, no es posible mantenerlo de forma eficaz. Adem\u00e1s, el metal debe mantenerse fundido constantemente cuando el filtro no est\u00e1 en uso.<\/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 proceden, por lo general, de tres fuentes. Algunos son part\u00edculas de \u00f3xido de aluminio que son aspiradas hacia la corriente l\u00edquida desde la capa de \u00f3xido que flota en su superficie; otras part\u00edculas arrastradas son fragmentos del revestimiento del horno, la cubeta de transferencia y otras partes del equipo de manipulaci\u00f3n del aluminio fundido que se erosionan y quedan arrastradas por la corriente de aluminio, y otras son precipitados de impurezas insolubles, como compuestos intermet\u00e1licos, boruros, carburos u otros compuestos del aluminio, como los cloruros.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11496\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/11\/Aluminum-Liquid-Filtration.jpg\" alt=\"\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/11\/Aluminum-Liquid-Filtration.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/11\/Aluminum-Liquid-Filtration-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Cuando estas inclusiones aparecen en el producto fundido final tras la solidificaci\u00f3n del aluminio fundido, reducen la ductilidad de dicho producto o le confieren un acabado deficiente. 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>Los procesos de filtrado de aleaciones de aluminio se llevan a cabo haciendo pasar el material filtrante a trav\u00e9s de una espuma cer\u00e1mica porosa. Los filtros de espuma cer\u00e1mica ofrecen un m\u00e9todo sencillo, fiable y rentable para eliminar las inclusiones. <a href=\"http:\/\/www.alalloycasting.com\/es\/filtering-with-cff\/\">Filtrado con CFF<\/a> es un complemento al tratamiento del metal dentro del horno, como la fundici\u00f3n y la desgasificaci\u00f3n o la filtraci\u00f3n en l\u00ednea.<\/p>","protected":false},"excerpt":{"rendered":"<p>In general, two filtering methods are used to remove entrained solids from molten aluminum alloys prior to casting. The most common filter media is an&hellip;<\/p>","protected":false},"author":1,"featured_media":11495,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[12983,12382],"class_list":["post-11494","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-alloys-filtering","tag-porous-ceramic-foam-filter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Alloys Filtering, Porous Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"Aluminum alloys filtering processes are accomplished by passing the porous ceramic foam filter medium. 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