发明公开
EP2449203A2 HARDFACING MATERIALS INCLUDING PCD PARTICLES, WELDING RODS AND EARTH-BORING TOOLS INCLUDING SUCH MATERIALS, AND METHODS OF FORMING AND USING SAME
有权
与PCD颗粒，焊条及ERDBOHRWERKZEUGE加上对教育和使用这些材料和方法AUFSCHWEISSUNGSMATERIALIEN
- 专利标题： HARDFACING MATERIALS INCLUDING PCD PARTICLES, WELDING RODS AND EARTH-BORING TOOLS INCLUDING SUCH MATERIALS, AND METHODS OF FORMING AND USING SAME
- 专利标题（中）： 与PCD颗粒，焊条及ERDBOHRWERKZEUGE加上对教育和使用这些材料和方法AUFSCHWEISSUNGSMATERIALIEN
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申请号： EP10794807.7申请日： 2010-07-02
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公开(公告)号： EP2449203A2公开(公告)日： 2012-05-09
- 发明人: LYONS, Nicholas, J. , SCOTT, Dan, E.
- 申请人： Baker Hughes Incorporated
- 申请人地址： P. O. Box 4740 Houston, TX 77210 US
- 专利权人： Baker Hughes Incorporated
- 当前专利权人： Baker Hughes Incorporated
- 当前专利权人地址： P. O. Box 4740 Houston, TX 77210 US
- 代理机构： Jeffrey, Philip Michael
- 优先权： US497420 20090702
- 国际公布： WO2011003051 20110106
- 主分类号： E21B10/46
- IPC分类号： E21B10/46 ; E21B10/54 ; E21B10/50
摘要：
Hardfacing materials include particles of polycrystalline diamond (PCD) material embedded within a matrix material. The PCD particles comprise a plurality of inter-bonded diamond grains. Material compositions and structures used to apply a hardfacing material to an earth-boring tool (e.g., welding rods) include PCD particles. Earth-boring tools include a hardfacing material comprising PCD particles embedded within a matrix material on at least a portion of a surface of a body of the tools. Methods of forming a hardfacing material include subjecting diamond grains to elevated temperatures and pressures to form diamond-to-diamond bonds between the diamond grains and form a PCD material. The PCD material is broken down to form PCD particles that include a plurality of inter-bonded diamond grains. Methods of hardfacing tools include bonding PCD particles to surfaces of the tools using a metal matrix material.
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