发明授权
- 专利标题: Fracture and wear resistant compounds and rock bits
- 专利标题(中): 断裂和耐磨化合物和岩屑
-
申请号: US11415657申请日: 2006-05-02
-
公开(公告)号: US07258177B2公开(公告)日: 2007-08-21
- 发明人: Dah-Ben Liang , Anthony Griffo
- 申请人: Dah-Ben Liang , Anthony Griffo
- 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: E21B10/36
- IPC分类号: E21B10/36
摘要:
An insert for a rock bit that includes tungsten carbide particles, and a cobalt binder disposed around the particles, wherein a grain size of the tungsten carbide particles and a content of the cobalt binder are selected to provide a fracture toughness of at least about 18 ksi (in)0.5, a wear number of at least about 2, and a hardness of 85 to 87 Ra is disclosed.
公开/授权文献
- US20060254828A1 Fracture and wear resistant compounds and rock bits 公开/授权日:2006-11-16
信息查询