Invention Grant
- Patent Title: Method of texturing a bearing surface of a roller cone rock bit
- Patent Title (中): 轧辊锥形钻头的轴承表面的纹理方法
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Application No.: US12398730Application Date: 2009-03-05
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Publication No.: US08418332B2Publication Date: 2013-04-16
- Inventor: Xiaobin Lu
- Applicant: Xiaobin Lu
- Applicant Address: US TX Carrollton
- Assignee: Varel International Ind., L.P.
- Current Assignee: Varel International Ind., L.P.
- Current Assignee Address: US TX Carrollton
- Agency: Gardere Wynne Sewell, LLP
- Main IPC: B21C37/30
- IPC: B21C37/30 ; C21D7/06
Abstract:
Surface texturing is employed to modify the topography of one or more surfaces (radial or cylindrical) of the bearing system for a roller cone rock bit. The surface texturing results in a dimpled surface which retains additional lubricant helpful in reducing friction in the boundary and mixed lubrication regimes. Shot peening is disclosed as one method for texturing the desired surface.
Public/Granted literature
- US20090232434A1 TEXTURING OF THE BEARING SURFACE FOR A ROLLER CONE ROCK BIT Public/Granted day:2009-09-17
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