发明名称 |
TOUGH, WEAR-RESISTANT PUNCHES AND DIES MADE OF POWDER METALLURGY COLD WORK TOOL STEEL |
摘要 |
<p>Tough, wear-resistant dies derived from cold work steel formed by powder metallurgy processing and containing not greater than about 4% of tungsten. The dies desirably contain not greater than about 4% molybdenum by weight and at least about 5% chromium by weight. Disclosed also is a punch and die combination, the die being derived from cold work steel formed by powder metallurgy processing and containing not greater than about 4% of tungsten. The punch, which may also be derived from cold work steel formed by powder metallurgy processing and containing less than about 4% by weight of tungsten, may have a formula different from that of the die. A punching method is also disclosed.</p> |
申请公布号 |
WO2006112912(A1) |
申请公布日期 |
2006.10.26 |
申请号 |
WO2006US03449 |
申请日期 |
2006.02.01 |
申请人 |
WILSON TOOL INTERNATIONAL, INC.;HILLSTROM, MARSHALL, D. |
发明人 |
HILLSTROM, MARSHALL, D. |
分类号 |
C22C33/02;B21D37/01;B22F5/00 |
主分类号 |
C22C33/02 |
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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