发明名称 |
Method of producing a drawing die |
摘要 |
The disclosure relates to the manufacture of wire-drawing dies. The disclosure provides a method for securing a core in a metal housing. The method begins with the clamping of an annulus, consisting of a hardenable metal alloy, around a cylindrical core consisting of a material such as polycrystalline diamond or boron nitride. The core is clamped so as to produce a permanent, radially compressive stress therein. The core-annulus combination is secured in a metal housing of a conventional shape.
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申请公布号 |
US4392397(A) |
申请公布日期 |
1983.07.12 |
申请号 |
US19800161197 |
申请日期 |
1980.06.19 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
ENGELFRIET, ADRIANUS R. C.;OP HET VELD, ADRIAAN J. G.;VAN VUCHT, THEODORUS J. P. |
分类号 |
B21C3/02;B21C3/18;B21C25/02;(IPC1-7):B23P15/24 |
主分类号 |
B21C3/02 |
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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