发明公开
EP0875588A2 Wear resistant, powder metallurgy cold work tool steel articles having high impact toughness and a method for producing the same
失效
的金属粉末的高冲击强度和过程及其制备Kaltarbeitswerkzeugstahlteilchen
- 专利标题： Wear resistant, powder metallurgy cold work tool steel articles having high impact toughness and a method for producing the same
- 专利标题（中）： 的金属粉末的高冲击强度和过程及其制备Kaltarbeitswerkzeugstahlteilchen
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申请号： EP98301890.4申请日： 1998-03-13
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公开(公告)号： EP0875588A2公开(公告)日： 1998-11-04
- 发明人: Pinnow, Kenneth E. , Stasko, William
- 申请人： CRUCIBLE MATERIALS CORPORATION
- 申请人地址： P.O. Box 977, State Fair Boulevard Syracuse, New York 13201-0977 US
- 专利权人： CRUCIBLE MATERIALS CORPORATION
- 当前专利权人： CRUCIBLE MATERIALS CORPORATION
- 当前专利权人地址： P.O. Box 977, State Fair Boulevard Syracuse, New York 13201-0977 US
- 代理机构： Powell, Timothy John
- 优先权： US826393 19970409
- 主分类号： C22C33/02
- IPC分类号： C22C33/02
摘要：
A hot-worked, fully dense, wear resistant, vanadium-rich, powder metallurgy cold work tool steel article having improved impact toughness. This is achieved by controlling the amount, composition and size of the primary carbides and by insuring that substantially all the primary carbides remaining after hardening and tempering are MC-type vanadium-rich carbides. The article is produced by hot isostatic compacting of nitrogen atomized powder particles.
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