{"id":7090,"date":"2020-07-27T07:44:00","date_gmt":"2020-07-27T07:44:00","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=7090"},"modified":"2020-07-27T07:45:33","modified_gmt":"2020-07-27T07:45:33","slug":"reticulated-foam-filters","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/es\/reticulated-foam-filters\/","title":{"rendered":"Filtros de espuma reticulada"},"content":{"rendered":"<p>Los filtros de espuma reticulada se fabrican sumergiendo una esponja de poliuretano en una pasta cer\u00e1mica, escurriendo el exceso, sec\u00e1ndola y, por \u00faltimo, sinteriz\u00e1ndola a alta temperatura para formar un material cer\u00e1mico poroso tridimensional, que consiste en un tubo con giros y curvas interconectados y de grosor irregular.<br \/>\nEs precisamente esta pared irregular del tubo la que desempe\u00f1a un papel fundamental a la hora de retener peque\u00f1as inclusiones en el aluminio fundido. Esta estructura tambi\u00e9n aumenta la superficie de contacto entre el aluminio fundido y la parte cer\u00e1mica del filtro, lo que incrementa la probabilidad de que las part\u00edculas de inclusi\u00f3n se adhieran.<\/p>\n<p>El objetivo principal del uso de filtros de espuma cer\u00e1mica es eliminar las inclusiones del aluminio fundido. Las inclusiones suelen presentarse en el metal fundido en tres formas: \u00f3xidos met\u00e1licos; part\u00edculas extra\u00f1as, como restos de materiales refractarios; y part\u00edculas introducidas durante el procesamiento del metal fundido.<\/p>\n<p><img class=\"alignnone size-full wp-image-7091\" src=\"http:\/\/www.adtechamm.com\/wp-content\/uploads\/2020\/07\/Reticulated-Foam-Filters.jpg\" alt=\"Filtros de espuma reticulada\" width=\"800\" height=\"600\" srcset=\"https:\/\/www.adtechamm.com\/wp-content\/uploads\/2020\/07\/Reticulated-Foam-Filters.jpg 800w, https:\/\/www.adtechamm.com\/wp-content\/uploads\/2020\/07\/Reticulated-Foam-Filters-300x225.jpg 300w, https:\/\/www.adtechamm.com\/wp-content\/uploads\/2020\/07\/Reticulated-Foam-Filters-768x576.jpg 768w, https:\/\/www.adtechamm.com\/wp-content\/uploads\/2020\/07\/Reticulated-Foam-Filters-700x525.jpg 700w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>Los filtros de espuma reticulada no solo eliminan eficazmente las impurezas heterog\u00e9neas de gran tama\u00f1o presentes en el aluminio fundido, sino que tambi\u00e9n filtran peque\u00f1as inclusiones de unas pocas micras que no pueden eliminarse mediante los procesos tradicionales. Dado que los \u00e1tomos de hidr\u00f3geno y otros iones nocivos presentes en el aluminio fundido suelen adsorberse en las inclusiones, y que estas pueden convertirse en el n\u00facleo de la formaci\u00f3n de burbujas, al filtrar las inclusiones tambi\u00e9n se reducen los gases nocivos presentes en el aluminio fundido.<\/p>\n<p>El <a href=\"http:\/\/www.adtechamm.com\/es\/reticulated-ceramic-foam-filters\/\">Filtro de espuma reticulada<\/a> El fabricante aplicar\u00e1 un conjunto de medidas m\u00e1s exhaustivas para garantizar la estabilidad del producto, con el fin de asegurar que la resistencia, la tasa de orificios pasantes, las dimensiones geom\u00e9tricas, la calidad est\u00e9tica y las propiedades f\u00edsico-qu\u00edmicas del producto final cumplan con las normas.<\/p>\n<p>En la producci\u00f3n, para conseguir un mejor efecto de filtrado, el aluminio l\u00edquido situado aguas arriba del filtro debe tener un cierto grado de limpieza; es decir, el aluminio l\u00edquido aguas arriba puede tratarse mediante deshidrogenaci\u00f3n con gas tradicional o mediante un tratamiento con fundente.<br \/>\nPara eliminar las part\u00edculas de inclusi\u00f3n de m\u00e1s de 30 \u00b5m, se recomienda utilizar una tecnolog\u00eda de filtraci\u00f3n en varias etapas y combinar filtros con diferentes densidades de poros (ppi) para obtener resultados satisfactorios.<br \/>\nSi no se aplican las medidas anteriores como requisito previo, al realizar la filtraci\u00f3n y purificaci\u00f3n por separado de fundidos de aleaciones de aluminio con un alto contenido en hidr\u00f3geno y ox\u00edgeno, numerosas inclusiones no met\u00e1licas y de mayor tama\u00f1o, no solo la eficiencia de la filtraci\u00f3n ser\u00e1 baja, sino que el filtro se obstruir\u00e1 con facilidad, lo que provocar\u00e1 un aumento de los costes y har\u00e1 que el resultado de la purificaci\u00f3n no sea muy satisfactorio.<br \/>\nTras adoptar las medidas mencionadas, el contenido de hidr\u00f3geno en la aleaci\u00f3n fundida se ha reducido a un nivel muy bajo, y el tama\u00f1o de las inclusiones de \u00f3xido en la fundici\u00f3n tambi\u00e9n ha disminuido.<br \/>\nPor lo tanto, el uso de filtros de espuma reticulada permite eliminar eficazmente las inclusiones de oxidaci\u00f3n finas y dispersas, lo que mejora la eficacia de la filtraci\u00f3n y reduce el coste de la filtraci\u00f3n y la purificaci\u00f3n.<br \/>\nAdem\u00e1s, el aluminio fundido filtrado de alta calidad debe protegerse de la contaminaci\u00f3n secundaria; es decir, deben establecerse requisitos m\u00e1s estrictos para los materiales refractarios situados aguas abajo de la caja de filtrado, y debe protegerse la capa de \u00f3xido superficial del aluminio fundido aguas abajo.<\/p>","protected":false},"excerpt":{"rendered":"<p>Reticulated Foam Filters are made by immersing polyurethane sponge in ceramic slurry, squeezing out the excess part, drying, and finally sintering at high temperature to form a three-dimensional porous ceramic material, which is a pipe with twists and turns interconnected with uneven thickness. It is&#8230;<\/p>","protected":false},"author":1,"featured_media":7091,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[26524],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Reticulated Foam Filters for Molten Aluminium Casting Foundry<\/title>\n<meta name=\"description\" content=\"Reticulated Foam Filters are made by immersing polyurethane sponge in ceramic slurry, squeezing out the excess part, drying.....\" \/>\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.adtechamm.com\/es\/reticulated-foam-filters\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reticulated Foam Filters for Molten Aluminium Casting 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