发明名称 |
Ball for ball-point pen |
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 mum. 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.
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申请公布号 |
US2002026854(A1) |
申请公布日期 |
2002.03.07 |
申请号 |
US20010832696 |
申请日期 |
2001.04.11 |
申请人 |
NISHIKITA KAZUYUKI;YOSHIDA HIDEJI |
发明人 |
NISHIKITA KAZUYUKI;YOSHIDA HIDEJI |
分类号 |
B43K1/08;C22C29/08;(IPC1-7):C22C29/08 |
主分类号 |
B43K1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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