filtro de espuma cer\u00e1mica de al\u00famina<\/a> Debe disponerse de una cierta altura manom\u00e9trica para iniciar la filtraci\u00f3n y superar el obst\u00e1culo que supone la tensi\u00f3n superficial. El valor de la altura manom\u00e9trica influye considerablemente en el inicio del proceso de filtraci\u00f3n. Por lo general, debe ser superior a 400 mm. El indentador debe ser, en consecuencia, m\u00e1s grande.<\/p>\nLa parte en la que se solapan el filtro de espuma cer\u00e1mica y el molde debe sellarse lo m\u00e1ximo posible para evitar la p\u00e9rdida de metal fundido por el hueco y que no se consiga el efecto de filtrado. En el caso de algunos moldes de arena, como los moldes h\u00famedos, el uso exclusivo del filtro de espuma cer\u00e1mica puede provocar f\u00e1cilmente que la arena se desprenda en el punto donde se coloca el filtro. Por ello, es necesario dise\u00f1ar un soporte para el filtro que lo sujete, de modo que no se mueva bajo el impacto del metal fundido, evitando as\u00ed que las part\u00edculas de arena entren en la cavidad y se produzca la p\u00e9rdida de metal fundido.<\/p>\n
Principios de la filtraci\u00f3n de aluminio fundido mediante filtros de espuma cer\u00e1mica<\/strong><\/p>\nCuanto m\u00e1s cerca est\u00e9 la posici\u00f3n de colocaci\u00f3n de la cavidad de fundici\u00f3n, mejor, ya que as\u00ed se reduce la probabilidad de oxidaci\u00f3n secundaria;<\/p>\n
El dise\u00f1o del sistema de canalizaci\u00f3n debe ser sencillo, y se pueden descartar otras medidas de retenci\u00f3n de escoria, lo que puede mejorar la tasa de aprovechamiento del molde de arena y el ritmo de producci\u00f3n del proceso;<\/p>\n
El \u00e1rea de trabajo del filtro debe ser de 4 a 6 veces la secci\u00f3n transversal de bloqueo del sistema de colada, para garantizar que la velocidad de vertido no se vea afectada;<\/p>\n
Selecciona el filtro adecuado en funci\u00f3n del tipo de aleaci\u00f3n de fundici\u00f3n y de la temperatura de colada, y no debe utilizarse a temperaturas superiores a las indicadas;<\/p>\n
Elige el tama\u00f1o de poro adecuado para conseguir realmente el efecto de filtrado;<\/p>\n
Los filtros no se pueden utilizar para regular la velocidad de vertido.<\/p>","protected":false},"excerpt":{"rendered":"
Before using the alumina foam ceramic filter molten Alu filtration, use compressed air to blow off the surface dust and internal fragments to prevent impurities…<\/p>","protected":false},"author":1,"featured_media":9337,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9336","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\n
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