{"id":7482,"date":"2021-01-12T08:02:50","date_gmt":"2021-01-12T08:02:50","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7482"},"modified":"2021-01-12T08:02:50","modified_gmt":"2021-01-12T08:02:50","slug":"ceramic-foam-filters-for-aluminium","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/ceramic-foam-filters-for-aluminium\/","title":{"rendered":"Filtros de espuma cer\u00e1mica para aluminio"},"content":{"rendered":"

El objetivo principal del uso de filtros de espuma cer\u00e1mica para el aluminio es eliminar las inclusiones del aluminio fundido. Las inclusiones suelen presentarse en la masa fundida en tres formas: \u00f3xidos met\u00e1licos; materias extra\u00f1as, como fragmentos de material refractario; y part\u00edculas introducidas durante el procesamiento de la masa fundida.<\/p>\n

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

Cuando la densidad y el di\u00e1metro de las part\u00edculas son elevados, suele producirse una sedimentaci\u00f3n natural, y la sedimentaci\u00f3n est\u00e1tica de part\u00edculas de menos de 90 pm no resulta muy eficaz. Las burbujas o el flujo fundido generados en el proceso tradicional de desgasificaci\u00f3n o tratamiento de refinado por flujo<\/a> Este proceso har\u00e1 que las part\u00edculas de inclusi\u00f3n floten hasta la superficie del material fundido. En la mayor\u00eda de los casos, este mecanismo permite eliminar eficazmente las inclusiones de m\u00e1s de 30 \u00b5m.<\/p>\n

\"Fundentes<\/p>\n

La filtraci\u00f3n es el proceso en el que el metal fundido fluye a trav\u00e9s de esferas muy compactas, tejidos de fibra de vidrio, mallas met\u00e1licas, filtros cer\u00e1micos de espuma<\/a>, u otros medios porosos para separar las inclusiones del material fundido. La ventaja de los filtros de espuma cer\u00e1mica para el aluminio es que permiten eliminar part\u00edculas de inclusiones cuyo di\u00e1metro es mucho menor que el del orificio de paso.<\/p>\n

Cuando el fundido de aleaci\u00f3n de aluminio no se filtra, la gran cantidad de inclusiones aumenta la viscosidad del l\u00edquido de la aleaci\u00f3n de aluminio y reduce su fluidez; durante el proceso de solidificaci\u00f3n, es f\u00e1cil que se obstruya el canal de alimentaci\u00f3n entre las dendritas, lo que da lugar a contracciones y poros microsc\u00f3picos.<\/p>\n

Al mismo tiempo, estas impurezas tambi\u00e9n adsorber\u00e1n burbujas, formar\u00e1n poros en la muestra, se convertir\u00e1n en una fuente de microfisuras y reducir\u00e1n el rendimiento de la aleaci\u00f3n.<\/p>\n

Adem\u00e1s, dado que las inclusiones se distribuyen principalmente en los l\u00edmites de grano tras la solidificaci\u00f3n de la aleaci\u00f3n, la fuerza de uni\u00f3n entre los granos se reduce, lo que provoca la fractura de los l\u00edmites de grano cuando se aplica tensi\u00f3n a la muestra.<\/p>","protected":false},"excerpt":{"rendered":"

The main purpose of using ceramic foam filters for aluminium is for removing inclusions in the molten aluminium. Inclusions usually exist in the melt in…<\/p>","protected":false},"author":1,"featured_media":7483,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-7482","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nCeramic Foam Filters for Aluminium, Molten Metal Filtration<\/title>\n<meta name=\"description\" content=\"The ceramic foam filters for aluminium can remove inclusion particles whose diameter is much smaller than the through-hole.\" \/>\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.alalloycasting.com\/es\/ceramic-foam-filters-for-aluminium\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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