{"id":7169,"date":"2020-12-24T02:35:52","date_gmt":"2020-12-24T02:35:52","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7169"},"modified":"2020-12-24T02:36:23","modified_gmt":"2020-12-24T02:36:23","slug":"molten-aluminum-cff-filtration","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/molten-aluminum-cff-filtration\/","title":{"rendered":"Filtraci\u00f3n CFF de aluminio fundido"},"content":{"rendered":"

Tras la filtraci\u00f3n del aluminio fundido mediante un filtro de espuma cer\u00e1mica (CFF), adem\u00e1s de en la interfaz con la escoria de aluminio, las inclusiones tambi\u00e9n pueden ser adsorbidas y eliminadas por el material refractario microporoso presente en la pared interna de los poros del filtro de espuma cer\u00e1mica, lo que aumenta as\u00ed la tasa de eliminaci\u00f3n de inclusiones, especialmente en el caso de las de tama\u00f1o peque\u00f1o. Dado que la flotabilidad de las inclusiones de peque\u00f1o tama\u00f1o es reducida, si solo se depende de que floten hasta la interfaz de la escoria de aluminio para ser adsorbidas y eliminadas, la eficiencia de eliminaci\u00f3n es limitada, mientras que el filtro de espuma cer\u00e1mica se basa en la adsorci\u00f3n de los materiales refractarios microporosos para eliminar las inclusiones. Por lo tanto, el filtro de espuma cer\u00e1mica puede mejorar significativamente la tasa de eliminaci\u00f3n de las inclusiones de tama\u00f1o de part\u00edcula peque\u00f1o.<\/p>\n

Las inclusiones son el tipo m\u00e1s com\u00fan de defectos en la fundici\u00f3n. En el proceso de fundici\u00f3n existen numerosas etapas destinadas a reducir las inclusiones, como la selecci\u00f3n de la carga, la eliminaci\u00f3n de la espuma met\u00e1lica antes del vertido y el uso de un colector de escoria que cubre la cuchara de colada. El sistema de colada es de tipo cerrado, y el canal horizontal est\u00e1 equipado con un anillo de retenci\u00f3n de escoria<\/a>.<\/p>\n

El filtraci\u00f3n de metal fundido<\/a> Esta tecnolog\u00eda se desarroll\u00f3 en la d\u00e9cada de 1970 y se aplic\u00f3 por primera vez a las aleaciones de aluminio. Debido al bajo punto de fusi\u00f3n de las aleaciones de aluminio, la densidad de las aleaciones y los \u00f3xidos es pr\u00e1cticamente la misma, por lo que las inclusiones son dif\u00edciles de separar por flotaci\u00f3n. Producto de primera generaci\u00f3n: filtro tejido; producto de segunda generaci\u00f3n: filtro extruido de orificios rectos; producto de tercera generaci\u00f3n: filtro de espuma cer\u00e1mica.<\/p>\n

\"Filtro<\/p>\n

Filtro de espuma cer\u00e1mica, conocido como \u201cCFF\u201d (Ceramic Foam Filters). Por lo general, se rellena la espuma de poliuretano con una pasta cer\u00e1mica y, a continuaci\u00f3n, se extruye dicha pasta, de modo que el material cer\u00e1mico queda envuelto alrededor de la fibra de espuma; posteriormente, se cuece y sinteriza a alta temperatura, y el poliuretano se descompone por el calor, dando lugar a un producto cer\u00e1mico espumoso: el filtro cer\u00e1mico de espuma. Este tipo de filtro puede utilizarse en diversas aleaciones de fundici\u00f3n, y el producto ya se ha comercializado. Este proceso de filtraci\u00f3n se ha promovido ampliamente y se utiliza en grandes cantidades. La filtraci\u00f3n con CFF del aluminio fundido se ha convertido en la forma m\u00e1s sencilla y eficaz de mejorar las propiedades mec\u00e1nicas de las piezas de fundici\u00f3n y reducir los poros y las inclusiones.<\/p>","protected":false},"excerpt":{"rendered":"

After the molten aluminum CFF (ceramic foam filter) filtration, in addition to the aluminum slag interface, the inclusions can also be adsorbed and removed by…<\/p>","protected":false},"author":1,"featured_media":7170,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-7169","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nMolten Aluminum CFF Filtration, Ceramic Foam Filter<\/title>\n<meta name=\"description\" content=\"Molten aluminum CFF filtration has become the simplest and most effective way to improve the mechanical properties of castings.\" \/>\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\/molten-aluminum-cff-filtration\/\" \/>\n<meta property=\"og:locale\" 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