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    • 2. 发明授权
    • Process for casting aluminum alloys
    • 铝合金铸造工艺
    • US4766948A
    • 1988-08-30
    • US109464
    • 1987-10-15
    • Friedrich BehrHeinrich BallewskiWolfgang Grossmann
    • Friedrich BehrHeinrich BallewskiWolfgang Grossmann
    • B22C3/00B22D27/20
    • B22D27/20B22C3/00
    • Improved small dendrite arm spacings and good technical values, regarding the technical properties of aluminum alloys, particularly tensile strength, yield strength and elongation percent, can be reliably obtained by refining the grain of the casting to provide the smallest possible spacings between the secondary dendrite arms, by casting the aluminum alloys in a ceramic mold provided with numerous micro-sized rough spots and pores and to the inner wall of which mold after it is dried and fired has been applied a thin layer of a salt mixture in which the cations are primarily from the alkalis and/or alkaline earths and the anions are primarily from halogens and which applied salt mixture has a liquidus temperature lower than the casting temperature of the alloy.
    • 通过精炼铸件的晶粒可以可靠地获得关于铝合金的技术性能,特别是拉伸强度,屈服强度和伸长百分比的改进的小枝晶臂间距和良好的技术价值,以在二次枝晶臂之间提供尽可能小的间距 通过在具有许多微小粗糙斑点和孔隙的陶瓷模具中浇铸铝合金,并且在其被干燥之后的模具的内壁上并且已经施加了其中阳离子主要的盐混合物的薄层 来自碱和/或碱土金属,阴离子主要来自卤素,并且所施加的盐混合物的液相线温度低于合金的铸造温度。