{"id":7152,"date":"2020-12-23T01:45:52","date_gmt":"2020-12-23T01:45:52","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7152"},"modified":"2020-12-23T01:45:52","modified_gmt":"2020-12-23T01:45:52","slug":"ceramic-foam-filters-for-metal-casting","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/ceramic-foam-filters-for-metal-casting\/","title":{"rendered":"Filtros de espuma cer\u00e1mica para la fundici\u00f3n de metales"},"content":{"rendered":"<p>Los filtros de espuma cer\u00e1mica para la fundici\u00f3n de metales permiten eliminar las inclusiones del aluminio fundido. A medida que aumentan los requisitos de calidad de los productos de aluminio, los requisitos relativos a la calidad de la filtraci\u00f3n son cada vez m\u00e1s exigentes. Las inclusiones suelen presentarse en el aluminio fundido en tres formas: \u00f3xidos met\u00e1licos; materias extra\u00f1as, como fragmentos de material refractario; y part\u00edculas introducidas durante el procesamiento del aluminio fundido.<\/p>\n<p>En general, existen tres m\u00e9todos para eliminar las part\u00edculas en suspensi\u00f3n en el ba\u00f1o de fusi\u00f3n: la precipitaci\u00f3n, en la que las part\u00edculas se acumulan en el fondo del ba\u00f1o; la flotaci\u00f3n, en la que las inclusiones flotan en la superficie del ba\u00f1o; y la filtraci\u00f3n, mediante la cual las part\u00edculas se separan del ba\u00f1o a trav\u00e9s de un medio poroso.<\/p>\n<p>Cuando la densidad y el di\u00e1metro de las part\u00edculas son elevados, suele producirse una sedimentaci\u00f3n natural; sin embargo, la sedimentaci\u00f3n est\u00e1tica de part\u00edculas de menos de 90 pm no resulta muy eficaz. Las burbujas o el fundente fundido generados en el proceso tradicional de deshidrogenaci\u00f3n con gas o de tratamiento con fundente hacen que las part\u00edculas de inclusi\u00f3n floten hasta la superficie del fundido. En la mayor\u00eda de los casos, este mecanismo permite eliminar eficazmente las inclusiones de m\u00e1s de 30 um. La filtraci\u00f3n se refiere al proceso en el que la masa fundida fluye a trav\u00e9s de esferas densamente empaquetadas, tejidos de fibra de vidrio, mallas met\u00e1licas, filtros de espuma cer\u00e1mica u otros medios porosos para separar las inclusiones de la masa fundida. La ventaja del filtro de espuma cer\u00e1mica es que puede eliminar part\u00edculas de inclusi\u00f3n cuyo di\u00e1metro es mucho menor que el del orificio de paso.<\/p>\n<p>El <a href=\"http:\/\/www.alalloycasting.com\/es\/molten-metal-filter\/\">filtro de metal fundido<\/a> Presenta las ventajas de una buena estabilidad qu\u00edmica, una elevada resistencia espec\u00edfica, resistencia a las altas temperaturas, resistencia al choque t\u00e9rmico, una gran superficie espec\u00edfica, un buen efecto de eliminaci\u00f3n de escoria, un funcionamiento sencillo, f\u00e1cil combinaci\u00f3n con otras piezas y un bajo coste. Por ello, se ha convertido en un m\u00e9todo de purificaci\u00f3n habitual en la producci\u00f3n de aleaciones de aluminio. Los estudios han demostrado que los filtros de espuma cer\u00e1mica para la fundici\u00f3n de metales tambi\u00e9n pueden reducir el contenido de hidr\u00f3geno en el aluminio fundido.<\/p>\n<p>El m\u00e9todo habitual de fabricaci\u00f3n de filtros de espuma cer\u00e1mica consiste en sumergir una esponja de poliuretano en lodo cer\u00e1mico, escurrir el exceso de material y secarla. Por \u00faltimo, se sinteriza a alta temperatura para formar un material cer\u00e1mico poroso tridimensional, que consiste en un tubo curvo e interconectado con un grosor no uniforme. Es precisamente esta pared tubular irregular la que desempe\u00f1a un papel clave a la hora de capturar las peque\u00f1as inclusiones presentes en el aluminio fundido. Esta estructura tambi\u00e9n aumenta la probabilidad de que el aluminio fundido entre en contacto con la parte cer\u00e1mica del filtro, lo que incrementa la posibilidad de que las inclusiones sean adsorbidas.<\/p>","protected":false},"excerpt":{"rendered":"<p>The ceramic foam filters for metal casting can remove inclusions in the aluminum melt. As the quality requirements for aluminum products increase, the requirements for&hellip;<\/p>","protected":false},"author":1,"featured_media":7153,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-7152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ceramic Foam Filters for Metal Casting -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"ceramic foam filters for metal casting are maily used to remove inclusions in the aluminum melt, also can reduce the hydrogen content.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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