发明名称 |
Percussive rock drill bit and buttons therefor and method for manufacturing drill bit |
摘要 |
A percussive rock drill bit includes a head portion with a forward surface surrounded by a peripheral surface. The peripheral surface supports a wreath of peripheral buttons. Front buttons are mounted to the forward surface inside the wreath of peripheral buttons. The button shave a diameter (D) and a height (H), wherein H/D<1.2. The buttons are welded to an essentially flat part of the forward surface whereby the buttons are metallurgically bound to the head portion.
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申请公布号 |
US2002153174(A1) |
申请公布日期 |
2002.10.24 |
申请号 |
US20020120499 |
申请日期 |
2002.04.12 |
申请人 |
LINDEN JOHAN;LUNDELL LARS-GUNNAR |
发明人 |
LINDEN JOHAN;LUNDELL LARS-GUNNAR |
分类号 |
E21B10/36;E21B10/56;(IPC1-7):E21B10/36 |
主分类号 |
E21B10/36 |
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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