发明名称 |
Wear part with hard facing |
摘要 |
The invention relates to a wear part or tool comprising a body containing an iron-group metal or alloy, a wear-resistant layer metallurgically bonded to a surface of the body through an intermediate layer, characterised in that the wear-resistant layer comprises at least 13 vol. % of grains of metal carbide selected from the group consisting of WC, TiC, VC, ZrC, NbC, Mo2C, HfC and TaC and grains of (CrlMe)xCy and a metal based phase comprising of a solid solution of 0.5 to 20% Cr, 0.2 to 15% Sil and 0.2 to 20% carbon, where Me is Fe, Co and/or Ni; and the intermediate layer has a thickness of 0.05 to 1 mm and comprises Si in amount of 0.1 to 0.7 of that in the wear-resistant layer, chromium in amount of 0.1 to 0.6 of that in the wear-resistant layer and the metal of the metal carbide in amount of 0.2 to 0.6 of that in the wear-resistant layer and to a method of producing such a wear part. |
申请公布号 |
US8846207(B2) |
申请公布日期 |
2014.09.30 |
申请号 |
US200912994905 |
申请日期 |
2009.09.15 |
申请人 |
|
发明人 |
Konyashin Igor Yuri;Ries Bernd Heinrich;Lachmann Frank Friedrich |
分类号 |
C22C32/00;C23C30/00;C23C26/02;C23C28/04 |
主分类号 |
C22C32/00 |
代理机构 |
Frommer Lawrence & Haug LLP |
代理人 |
Frommer Lawrence & Haug LLP ;Santucci Ronald R |
主权项 |
1. A wear part or tool comprising:
a body containing an iron-group metal or alloy, a wear-resistant layer metallurgically bonded to a surface of the body through an intermediate layer, wherein: the wear-resistant layer comprises at least 13 vol. % of grains of metal carbide selected from the group consisting of WC, TiC, VC, ZrC, NbC, Mo2C, HfC and TaC and grains of (Cr,Me)xCy, where x and y are variables, and a metal based phase comprising of a solid solution of 0.5 to 20 wt. % Cr, 0.2 to 15 wt. % Si, and 0.2 to 20 wt. % carbon, where Me is Fe, Co and/or Ni; the intermediate layer has a thickness of 0.05 to 1 mm and comprises Si in amount of 0.1 to 0.7 of that in the wear-resistant layer, chromium in amount of 0.1 to 0.6 of that in the wear-resistant layer and the metal of the metal carbide in amount of 0.2 to 0.6 of that in the wear-resistant layer, and variable y is either 3 or 6 and when variable y is 3 then variable x is 7, and when variable y is 6 then variable x is 23. |
地址 |
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