{"id":6388,"date":"2020-11-13T02:03:27","date_gmt":"2020-11-13T02:03:27","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6388"},"modified":"2020-11-13T02:03:27","modified_gmt":"2020-11-13T02:03:27","slug":"foam-ceramic-filters-for-aluminum","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/foam-ceramic-filters-for-aluminum\/","title":{"rendered":"Filtros cer\u00e1micos de espuma para aluminio"},"content":{"rendered":"<p>Los filtros cer\u00e1micos de espuma para aluminio suelen utilizar espuma de poliuretano como soporte, que se rellena con una pasta cer\u00e1mica compuesta por \u00e1ridos refractarios, agentes de sinterizaci\u00f3n, aglutinantes y otros micropolvos, adem\u00e1s de agua; a continuaci\u00f3n, se extruye la pasta, y el resto queda recubierto por la espuma. El material cer\u00e1mico que rodea la fibra se seca, se cuece y se sinteriza a alta temperatura, y el poliuretano se descompone con el calor, dejando un producto cer\u00e1mico espumoso, es decir, un <a href=\"http:\/\/www.alalloycasting.com\/es\/ceramic-foam-filter-pzr\/\">filtro cer\u00e1mico de espuma<\/a>. AdTech cuenta con una l\u00ednea de producci\u00f3n de filtros de espuma cer\u00e1mica, lo que mejora la productividad y reduce los costes.<\/p>\n<p>El material cer\u00e1mico utilizado para la filtraci\u00f3n del metal fundido tiene un punto de fusi\u00f3n muy alto y no se funde durante la colada ni se descompone en el metal fundido.<\/p>\n<p><strong>Especificaciones del filtro<\/strong><\/p>\n<p>El n\u00famero que precede a \u00abPPI\u00bb indica la densidad de poros del producto. Si el modelo es de 10 ppi, significa que la uniformidad de los poros en cualquier tramo de 25,4 mm es de entre 8 y 12.<\/p>\n<p>Por lo general, se utiliza 10 ppi para la fundici\u00f3n de hierro d\u00factil, 10\/20 ppi para el hierro gris, 20\/25 ppi para la fundici\u00f3n de aluminio y 25\/30 ppi para la fundici\u00f3n de cobre, dependiendo del grado de limpieza de la soluci\u00f3n.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6389\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/11\/Foam-Ceramic-Filters-for-Aluminum-1.jpg\" alt=\"Filtros cer\u00e1micos de espuma para aluminio\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/11\/Foam-Ceramic-Filters-for-Aluminum-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/11\/Foam-Ceramic-Filters-for-Aluminum-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><strong>Mecanismo de filtrado de los filtros de espuma cer\u00e1mica para aluminio<\/strong><\/p>\n<p>\u2022 Tamizado. Al igual que un tamiz, evita la entrada de part\u00edculas y sus aglomerados cuyo tama\u00f1o sea mayor que el tama\u00f1o de los poros de la superficie del filtro.<\/p>\n<p>\u2022 Torta de filtro. Tras el tamizado, muchas inclusiones de tama\u00f1o superior al de los poros del filtro quedan retenidas en el extremo de entrada del filtro. A medida que aumenta el n\u00famero de inclusiones retenidas, se forma una \u201ctorta de filtro\u201d compuesta por inclusiones de gran tama\u00f1o en la superficie del extremo de entrada del filtro. La \u201ctorta de filtraci\u00f3n\u201d diluye el l\u00edquido, de modo que las impurezas m\u00e1s peque\u00f1as que el tama\u00f1o de los poros del filtro tambi\u00e9n quedan parcialmente retenidas en la \u201ctorta de filtraci\u00f3n\u201d.<\/p>\n<p>\u2022 Filtraci\u00f3n en lecho profundo. En el interior del filtro de espuma cer\u00e1mica, el recorrido que sigue la masa fundida es sinuoso, y en una peque\u00f1a zona local incluso hay desviaciones de flujo cruzado. Esto cumple principalmente dos funciones: \u2460 Aumenta considerablemente la probabilidad de que las part\u00edculas de inclusi\u00f3n entren en contacto con el filtro; \u2461 Acelera el caudal y el cambio de direcci\u00f3n del flujo del material fundido, de modo que las peque\u00f1as inclusiones presentes en \u00e9l queden atrapadas en un recoveco tras chocar entre s\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>Foam ceramic filters for aluminum generally use polyurethane foam as a carrier, filled with a ceramic slurry made of refractory aggregate sintering aids, binders and&hellip;<\/p>","protected":false},"author":1,"featured_media":6390,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,138],"tags":[],"class_list":["post-6388","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ceramic-foam-filter","category-seo"],"yoast_head":"<!-- This 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