发明名称 |
Method for manufacturing blank material suitable for oil drilling non-magnetic stabilizer |
摘要 |
A method of manufacturing a blank for an oil drilling stabilizer, which includes the steps of hot-working a stock of non-magnetic steel into a rod-like shape work item with a bulging large-diameter portion at a median point between opposite ends thereof; subjecting the resulting rod-like work item to an ordinary heat treatment solution and a machining operation to obtain a semi-finished work item of a shape substantially conforming with the desired shape; and then subjecting the semi-finished work item to cold axial compressive working in a die cavity of a complementary shape and within a work hardening temperature range.
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申请公布号 |
US4472207(A) |
申请公布日期 |
1984.09.18 |
申请号 |
US19830478874 |
申请日期 |
1983.03.25 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO |
发明人 |
KINOSHITA, SHUSHI;DENOH, SHINPEI;KITAMURA, YOSHIO |
分类号 |
B21J5/08;B21K5/02;B23P15/00;C21D8/00;C21D8/06;E21B17/10;(IPC1-7):C21D9/00 |
主分类号 |
B21J5/08 |
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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