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    • 3. 发明授权
    • Method for production of hollow bodies and grinding bodies so produced
    • 生产中空体和研磨体的方法
    • US07316258B2
    • 2008-01-08
    • US10550594
    • 2004-03-10
    • Jens-Peter Thiel
    • Jens-Peter Thiel
    • B22D33/04B22C9/10
    • B02C17/20B22D25/02
    • A method for producing hollow grinding bodies for comminuting material to be ground uses a casting mold having a cavity and includes arranging a core in the cavity with retaining elements to produce a shell-type intermediate space. At least in the area of the intermediate space a metallic material is used as a covering for the retaining elements and fuses with the casting material. The corresponding grinding body has fused-in coverings which improve the rolling behavior of the grinding body produced as only small openings are required to remove the retaining elements. Since the fusing of the metal covering into the edge area of the openings has the effect of a composite casting, even brittle materials do not suffer from chipping.
    • 用于制造用于粉碎待粉碎材料的中空研磨体的方法使用具有空腔的铸模,并且包括在所述腔中设置具有保持元件的芯以产生壳型中间空间。 至少在中间空间的区域中,使用金属材料作为用于保持元件和熔模与铸造材料的覆盖物。 相应的研磨体具有熔融覆盖物,其改善了所产生的研磨体的滚动行为,因为仅需要小的开口来移除保持元件。 由于将金属覆盖物熔合到开口的边缘区域中具有复合铸造的效果,所以即使脆性材料也不会发生碎裂。
    • 5. 发明申请
    • Method for production of hollow bodies and grinding bodies so produced
    • 生产中空体和研磨体的方法
    • US20060243413A1
    • 2006-11-02
    • US10550594
    • 2004-03-10
    • Jens-Peter Thiel
    • Jens-Peter Thiel
    • B22D19/00B22D33/04
    • B02C17/20B22D25/02
    • A method for producing hollow grinding bodies for comminuting material to be ground uses a casting mold having a cavity and includes arranging a core in the cavity with retaining elements to produce a shell-type intermediate space. At least in the area of the intermediate space a metallic material is used as a covering for the retaining elements and fuses with the casting material. The corresponding grinding body has fused-in coverings which improve the rolling behavior of the grinding body produced as only small openings are required to remove the retaining elements. Since the fusing of the metal covering into the edge area of the openings has the effect of a composite casting, even brittle materials do not suffer from chipping.
    • 用于制造用于粉碎待粉碎材料的中空研磨体的方法使用具有空腔的铸模,并且包括在所述腔中设置具有保持元件的芯以产生壳型中间空间。 至少在中间空间的区域中,使用金属材料作为用于保持元件和熔模与铸造材料的覆盖物。 相应的研磨体具有熔融覆盖物,其改善了所产生的研磨体的滚动行为,因为仅需要小的开口来移除保持元件。 由于将金属覆盖物熔合到开口的边缘区域中具有复合铸造的效果,所以即使脆性材料也不会发生碎裂。