发明授权
US07666244B2 Hardfacing milled-tooth drill bits using super dense carbide pellets
有权
使用超密集的碳化物颗粒表面硬化磨齿钻头
- 专利标题： Hardfacing milled-tooth drill bits using super dense carbide pellets
- 专利标题（中）： 使用超密集的碳化物颗粒表面硬化磨齿钻头
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申请号： US11175120申请日： 2005-07-05
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公开(公告)号： US07666244B2公开(公告)日： 2010-02-23
- 发明人: Gregory T. Lockwood , Anthony Griffo , Dah-Ben Liang , Alysia C. White
- 申请人： Gregory T. Lockwood , Anthony Griffo , Dah-Ben Liang , Alysia C. White
- 申请人地址： US TX Houston
- 专利权人： Smith International, Inc.
- 当前专利权人： Smith International, Inc.
- 当前专利权人地址： US TX Houston
- 代理机构： Osha • Liang LLP
- 主分类号： C22C29/08
- IPC分类号： C22C29/08 ; E21B10/50
摘要：
A hardfacing composition for a drill bit, including a carbide phase comprising from about 50% to about 75% by weight of the hardfacing composition of a combination of 16 to 40 mesh cemented tungsten carbide and 80 to 200 mesh super dense tungsten carbide cobalt particles, wherein about 5% to about 50% by weight of the carbide phase comprises the super dense tungsten carbide cobalt particles, and a binder alloy including about 25% to about 50% by weight of the hardfacing composition.
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