发明名称 |
DRILL BIT MANUFACTURE |
摘要 |
There is described a process for the manufacture of a drill bit. The process comprises the steps of forming a cast metal blank having a substantially predetermined form and thereafter coating predetermined external portions of the previously cast blank with a hard-facing material.
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申请公布号 |
WO9707913(A1) |
申请公布日期 |
1997.03.06 |
申请号 |
WO1996GB02044 |
申请日期 |
1996.08.23 |
申请人 |
BBL BRIT BIT LIMITED;WARDLEY, MICHAEL, THOMAS |
发明人 |
WARDLEY, MICHAEL, THOMAS |
分类号 |
B22D19/06;C23C30/00;(IPC1-7):B22D19/06 |
主分类号 |
B22D19/06 |
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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