{"id":6923,"date":"2020-12-10T02:34:09","date_gmt":"2020-12-10T02:34:09","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6923"},"modified":"2020-12-10T02:34:09","modified_gmt":"2020-12-10T02:34:09","slug":"molten-metal-filter","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/molten-metal-filter\/","title":{"rendered":"Filtro para metal fundido"},"content":{"rendered":"<p>Los filtros cer\u00e1micos porosos presentan una estructura porosa similar a una red de poros abiertos (espuma cer\u00e1mica) interconectados tridimensionalmente, etc., en la que la forma cer\u00e1mica se utiliza preferentemente como material filtrante para metal fundido.<\/p>\n<p>El <a href=\"http:\/\/www.alalloycasting.com\/es\/porous-ceramic-filter\/\">filtro cer\u00e1mico poroso<\/a> Se prepara recubriendo con una pasta cer\u00e1mica una espuma de poliuretano flexible de malla no celular, que sirve de material base, y posteriormente carboniz\u00e1ndola para eliminar la espuma de poliuretano mediante sinterizaci\u00f3n. La capa met\u00e1lica se aplica al cuerpo cer\u00e1mico poroso, cubriendo toda la superficie de la estructura reticular del cuerpo cer\u00e1mico poroso. El cuerpo cer\u00e1mico poroso presenta poros abiertos interconectados tridimensionalmente, con una estructura porosa sustancialmente id\u00e9ntica a la de la espuma de poliuretano reticulada. La cavidad continua se forma en el interior del esqueleto, en correspondencia con el sustrato de espuma de poliuretano. Las aberturas constituyen el canal met\u00e1lico para la fusi\u00f3n.<\/p>\n<p>En el caso de utilizar una estructura cer\u00e1mica porosa compuesta principalmente por el cuerpo cer\u00e1mico poroso mencionado anteriormente como filtro de metal fundido, es deseable que la densidad aparente del cuerpo cer\u00e1mico poroso sea de entre 0,3 y 0,6, lo que da como resultado una estructura cer\u00e1mica porosa con elevadas propiedades mec\u00e1nicas y resistencia mec\u00e1nica. Se puede obtener una resistencia t\u00e9rmica de calidad suficientemente alta como para soportar el uso del metal como filtro de metal fundido a altas temperaturas. En el caso de una estructura cer\u00e1mica porosa compuesta principalmente por un cuerpo cer\u00e1mico poroso, tambi\u00e9n es deseable que el di\u00e1metro medio de las aberturas interconectadas tridimensionalmente tras la formaci\u00f3n de la capa met\u00e1lica sea de 0,3 a 5 mm, y que est\u00e9n formadas de manera que no se produzca una obstrucci\u00f3n significativa en ninguna de ellas. Adem\u00e1s, al definir la porosidad de la estructura cer\u00e1mica porosa entre el 75% y el 95%, se puede obtener una alta tasa de flujo y una resistencia suficiente.<\/p>\n<p>La estructura cer\u00e1mica porosa incluye, preferiblemente, aquellos materiales compuestos principalmente por di\u00f3xido de silicio, \u00f3xido de aluminio y \u00f3xido de magnesio, que se sinterizan a una temperatura superior a 1300 \u00b0C y tienen un punto de reblandecimiento superior a 1250 \u00b0C. La estructura cer\u00e1mica porosa, fabricada con cer\u00e1mica, cuando se precalienta a una temperatura cercana a la del metal fundido que se va a filtrar a trav\u00e9s de ella, es capaz de soportar suficientemente el choque t\u00e9rmico y puede resistir dicho choque durante la operaci\u00f3n de filtrado.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6925\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Filter.jpg\" alt=\"Filtro para metal fundido\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Filter.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/12\/Molten-Metal-Filter-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>En la estructura cer\u00e1mica porosa, se forma un cuerpo cer\u00e1mico poroso \u2014como la espuma cer\u00e1mica\u2014 sobre la superficie de la pared del poro por el que puede pasar el fluido, junto con una capa met\u00e1lica, de modo que el fluido fluye a trav\u00e9s de la capa met\u00e1lica mientras entra en contacto con ella. En este caso, el tipo de metal que forma la capa met\u00e1lica no est\u00e1 especialmente limitado, y puede seleccionarse adecuadamente en funci\u00f3n de la finalidad de uso. En el caso de que el metal fundido que se va a filtrar sea aluminio, cobre o hierro, la capa met\u00e1lica de recubrimiento se selecciona preferiblemente entre platino, oro, plata, cobre, esta\u00f1o, lat\u00f3n, bronce y n\u00edquel. Al utilizar estos metales en funci\u00f3n del metal fundido que se vaya a filtrar, es posible minimizar la lixiviaci\u00f3n de las impurezas met\u00e1licas solubles presentes en \u00e9l, lo que provocar\u00eda una disminuci\u00f3n de la calidad del metal fundido filtrado. En el proceso por el que el metal fundido pasa a trav\u00e9s de las aberturas interconectadas, se filtran las impurezas solubles y las impurezas s\u00f3lidas incorporadas.<\/p>\n<p>Dado que la capa met\u00e1lica se deposita de forma que cubre toda la superficie de las paredes de los poros de la estructura cer\u00e1mica porosa por la que puede pasar el fluido, cuando el metal fundido atraviesa los poros del filtro, se reduce la resistencia al flujo del metal fundido. Por lo tanto, el tiempo que transcurre desde la introducci\u00f3n del metal fundido en la entrada del filtro hasta el inicio de la filtraci\u00f3n puede reducirse significativamente, y la filtraci\u00f3n puede iniciarse de forma adecuada incluso si se reduce la altura de presi\u00f3n inicial. Adem\u00e1s, gracias a la mejora de la humectabilidad, se elimina el flujo local de metal fundido en el interior del filtro.<\/p>","protected":false},"excerpt":{"rendered":"<p>The porous ceramic filters have a three-dimensionally interconnected open-pore (ceramic foam) network-like pore structure, etc., in which the ceramic form is preferably used as a&hellip;<\/p>","protected":false},"author":1,"featured_media":6924,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[127,128,645,378,4122,4121,430,753,164,4682,653,426,4123,487,379,221,664,7287,4124,241,418,1679,416,88,484,412,341,7288,298,756,409,754],"class_list":["post-6923","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-alumina-foam-ceramic-filter","tag-alumina-foam-ceramics","tag-aluminium-alloys-filtration","tag-ceramic-filter-for-aluminum-foundry","tag-ceramic-filter-for-foundry-for-sale","tag-ceramic-filter-for-sale","tag-ceramic-filter-media","tag-ceramic-foam-casting-filter","tag-ceramic-foam-filter-for-aluminum-casting","tag-ceramic-foam-filter-for-casting","tag-ceramic-foam-filter-manufacturer","tag-ceramic-foam-filter-manufacturing-process","tag-ceramic-foam-filter-purchasing","tag-cff-filter","tag-cff-filtration-mechanism","tag-filtering-function","tag-filtration-in-foundries","tag-filtration-method","tag-foam-ceramic-casting-filter","tag-foam-ceramic-material","tag-foundry-ceramic-filters","tag-high-grade-ceramic-foam-filters","tag-honeycomb-ceramic-filter","tag-how-to-use-the-molten-aluminum-filter","tag-liquid-aluminum-filter","tag-metal-foam-filter","tag-molten-aluminum-cff-filter","tag-molten-metal-filters-for-metallurgical-industry","tag-porous-ceramic-filter","tag-porous-ceramic-filtering-technology","tag-porous-ceramic-plate","tag-porous-foam-ceramic-materials"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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