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公开(公告)号：US06423111B1
公开(公告)日：2002-07-23
申请号：US09832696
申请日：2001-04-11
申请人： Kazuyuki Nishikita , Hideji Yoshida
发明人： Kazuyuki Nishikita , Hideji Yoshida
IPC分类号： C22C2902
摘要： A ball for a ball-point pen is provided comprising cemented carbide of WC—Cr3C2—Co where VC is contained as a solid solution in the Cr3C2—CO phase which is a binder of WC particles and wherein the mean diameter of the WC particles is in the range of from about 0.3 to about 0.5 &mgr;m. In one embodiment of the invention, a portion of the Cr3C2—VC—CO phase exposed on the surface of the ball comprises a plurality of concave recesses.
摘要翻译： 提供了一种用于圆珠笔的球，其包括WC-Cr 3 C 2 -Co的硬质合金，其中VC作为固溶体，作为WC颗粒的粘合剂的Cr 3 C 2 -CO相中含有，并且其中WC颗粒的平均直径为 在约0.3至约0.5μm的范围内。 在本发明的一个实施方案中，暴露在球表面上的部分Cr 3 C 2 -VC-CO相包括多个凹陷凹部。
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公开(公告)号：US06745472B2
公开(公告)日：2004-06-08
申请号：US10183236
申请日：2002-06-27
IPC分类号： B21K102
CPC分类号： F16C33/32 , B21K1/02 , B23P15/00 , B24B11/02 , B24B31/02 , Y10T29/49694 , Y10T29/49712
摘要： A method of manufacturing a steel ball for a rolling bearing, said method comprising: a molding step of forming a steel wire cut at a predetermined length into a raw ball having a band portion by a pair of molding forms having respectively hemispherical concave portions and relief grooves in peripheries of said concave portions on their respective opposing faces, said band portion being formed on a surface of said raw ball along said relief grooves by compressing said steel wire by said molding forms in a state in which both ends of said steel wire are sandwiched between said concave portions; and a tumbler working step of removing said band portion from the surface of the raw ball by tumbling.
摘要翻译： 一种制造用于滚动轴承的钢球的方法，所述方法包括：将预定长度切割的钢丝线形成为具有带状部分的原始球的成型步骤，所述成形球具有分别具有半球形凹部和浮雕的一对模制形状 所述带状部分沿着所述凹槽形成在所述原料球的表面上，所述凹槽在所述凹形部分的相对表面的周边上，在所述钢丝的两端的状态下通过所述模制形式压缩所述钢丝 夹在所述凹部之间; 以及通过翻滚从原始球的表面去除所述带部分的转鼓工作步骤。
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