发明名称 |
Ventil aus einer korrosions und Verschleiss widerstehenden Legierung |
摘要 |
To provide a corrosion-resisting and wear resisting alloy including cobalt, nickel or iron as a base used for a sliding part or a valve seat for a machine, and restraining erosion and corrosion caused by eutectic carbide constituting the alloy in an atmosphere with dissolved oxygen. A material is selected from a cobalt base added with Cr and/or W, a nickel base added with Fe and/or Cr, and an iron vase added with Cr and/or Ni. The material is cast into an ingot or a slab to produce an intermediate material. The intermediate material comprises mesh-like eutectic carbide and a base material surrounded by the eutectic carbide. A heat plastic forming is applied to the intermediate material at a temperature 650 DEG C or more and the solidus temperature or less. The eutectic carbide is formed into multiple grains or clusters as a discontinuous distribution. A resulting corrosion-resisting and wear-resisting alloy has 0.1 to 0.5 of coefficient of friction, and 300 to 600 Hv of Vickers hardness without age-hardening process. <IMAGE> |
申请公布号 |
DE60138431(D1) |
申请公布日期 |
2009.05.28 |
申请号 |
DE2001638431 |
申请日期 |
2001.08.28 |
申请人 |
HITACHI-GE NUCLEAR ENERGY LTD.;HITACHI KYOWA ENGINEERING CO. LTD. |
发明人 |
KIYOTOKI, YOSHIHISA;KUMAGAI, SHIN;CHIBA, YOSHITERU;OGAWA, YASUHIRO;SAKAMOTO, AKIRA;SHINOHARA, HIROYUKI |
分类号 |
C21D7/13;C21D8/00;C22C19/00;C22C19/05;C22C19/07;C22C38/00;C22C38/14;C22C38/34;C22C38/44;C22C38/58;C22F1/00;C22F1/10;F01L3/02;F04B53/00 |
主分类号 |
C21D7/13 |
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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