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    • 4. 发明授权
    • Porous reticulated metal foam for filtering molten magnesium
    • 用于过滤熔融镁的多孔网状金属泡沫
    • US08202346B1
    • 2012-06-19
    • US12490908
    • 2009-06-24
    • Leonard S. Aubrey
    • Leonard S. Aubrey
    • C22B9/02
    • C22B9/023B22C9/086B22D43/004Y02P10/234
    • A method for filtering molten magnesium or magnesium alloys is provided. The method includes the steps of: providing an organic foam; impregnating the organic foam with a slurry comprising metal particles; heating the impregnated organic foam to a temperature sufficient to volatilize the organic foam thereby forming a porous metal foam comprising no more than 0.5 wt % nickel; sintering the porous metal foam; passing molten magnesium or magnesium alloy through the porous metal foam thereby forming purified molten magnesium or magnesium alloy; and cooling the purified molten magnesium or magnesium alloy.
    • 提供了一种过滤熔融镁或镁合金的方法。 该方法包括以下步骤:提供有机泡沫; 用包含金属颗粒的浆料浸渍有机泡沫; 将浸渍的有机泡沫体加热到足以使有机泡沫挥发的温度,从而形成包含不超过0.5重量%镍的多孔金属泡沫; 烧结多孔金属泡沫; 使熔融的镁或镁合金通过多孔金属泡沫,从而形成纯化的熔融镁或镁合金; 并冷却纯化的熔融镁或镁合金。
    • 7. 发明授权
    • Method for producing wax impregnated filters for investment casting
applications
    • 用于熔模铸造应用的蜡浸渍过滤器的生产方法
    • US4978452A
    • 1990-12-18
    • US351589
    • 1989-05-15
    • Leonard S. Aubrey
    • Leonard S. Aubrey
    • B01D29/01B01D39/20B22C9/08
    • B22C9/086B01D29/012B01D39/2093Y10T29/49812
    • The present invention relates to wax impregnated filters for use in investment casting applications and a method for forming them. The filters are characterized by a wax impregnated ceramic substrate, wax layers bonded to two opposed surfaces of the substrate, and peripheral edges having exposed ceramic surfaces which can be adhered to the ceramic liner of an investment casting apparatus. The method comprises providing a sheet of ceramic foam filter material, impregnating the sheet with sufficient liquid wax to form a wax layer of desired thickness bonded to each of two opposed surfaces of the sheet, allowing the wax to solidify, and precision cutting the impregnated sheet into filters having a desired set of dimensions. The method further comprises exposing the peripheral edges of each filter to allow the ceramic shell building or liner in the investment casting apparatus to bond directly to the filter.
    • 本发明涉及用于熔模铸造应用的蜡浸渍过滤器及其形成方法。 过滤器的特征在于蜡浸渍的陶瓷基板,粘结到基板的两个相对表面的蜡层,以及具有暴露的陶瓷表面的外围边缘,其可以粘附到熔模铸造设备的陶瓷衬垫。 该方法包括提供一块陶瓷泡沫过滤材料,用足够的液体蜡浸渍片材以形成粘合到片材的两个相对表面中的每一个的所需厚度的蜡层,允许蜡固化,并精确地切割浸渍的片材 成为具有所需尺寸的过滤器。 该方法还包括暴露每个过滤器的周边边缘以允许熔模铸造设备中的陶瓷壳体建筑物或衬套直接结合到过滤器。