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    • 6. 发明申请
    • MELTING METHOD USING GRAPHITE MELTING VESSEL
    • 使用石墨熔化容器的熔化法
    • WO2008073141A3
    • 2008-12-04
    • PCT/US2007011732
    • 2007-05-16
    • HOWMET CORPLEE DAVID SVOGT RUSSELL G
    • LEE DAVID SVOGT RUSSELL G
    • H05B6/22B22C3/00C04B35/65H05B6/30
    • H05B6/24
    • Method of melting a metallic material such as a metal or or alloy involves the steps of disposing the metal or alloy in a crucible or other melting vessel having an induction coil disposed about an upstanding side wall of the vessel. The side wall comprises graphite and has a side wall thickness not exceeding about 0.50 inch. The induction coil is energized to generate an electromagnetic field effective to heat and melt the metal or alloy in the crucible and having a low enough frequency that the side wall is so transparent (does not suscept) to the electromagnetic field of the induction coil that a solid skull forms on the side wall to separate the melted metal or alloy from the side wall of the crucible.
    • 熔化诸如金属或合金之类的金属材料的方法包括将金属或合金放置在坩埚或具有围绕容器的直立侧壁布置的感应线圈的其他熔化容器中的步骤。 侧壁包含石墨并具有不超过约0.50英寸的侧壁厚度。 感应线圈通电以产生有效加热和熔化坩埚中的金属或合金的电磁场,并具有足够低的频率,使得侧壁对感应线圈的电磁场是如此透明(不会感受到),即 在侧壁上形成固体头骨以将熔化的金属或合金从坩埚的侧壁分离。