发明名称 |
FIRST LAYER OR UPPER LAYER WELDING SECTION OF HIGH Cr STEEL TURBINE ROTOR, OVERLAY WELDING MATERIAL FOR WELDING SECTION, AND METHOD FOR MANUFACTURING OVERLAY WELDING SECTION |
摘要 |
The present invention relates to a multilayer overlay welding section in which a first layer of an overlay welding section to be formed on the bearing contact surface of a high Cr steel turbine rotor includes C: 0.05 to 0.2%, Si: 0.1 to 1.0%, Mn: 0.3 to 1.5%, Cr: 4.0 to 7.7%, and Mo: 0.5 to 1.5% with a remainder including Fe and unavoidable impurities, a multilayer overlay welding section in which, in addition to the above layer, an upper layer welding section includes C: 0.05 to 0.2%, Si: 0.1 to 1.0%, Mn: 0.3 to 2.5%, Cr: 1.0 to 4.0%, and Mo: 0.5 to 1.5%, and a welding material therefor and a process for producing the multilayer overlay welding section. |
申请公布号 |
US2014212323(A1) |
申请公布日期 |
2014.07.31 |
申请号 |
US201214238959 |
申请日期 |
2012.08.17 |
申请人 |
Honma Yuta;Kayano Rinzo;Sakata Mikihiro;Yamashita Ken |
发明人 |
Honma Yuta;Kayano Rinzo;Sakata Mikihiro;Yamashita Ken |
分类号 |
C22C38/02;C22C38/08;C22C38/10;C22C38/12;C22C38/40;C22C38/20;C22C38/22;C22C38/24;C22C38/30;C22C38/32;C22C38/04;C22C38/16 |
主分类号 |
C22C38/02 |
代理机构 |
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代理人 |
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主权项 |
1. A first layer welding section of a high Cr steel turbine rotor, which is a first layer welding section among a multilayer overlay welding section formed on a bearing contact surface of the high Cr steel turbine rotor, the first layer welding section comprising, in terms of % by weight:
C: 0.05 to 0.2%, Si: 0.1 to 1.0%, Mn: 0.3 to 1.5%, Cr: 4.0 to 7.7%, and Mo: 0.5 to 1.5%, with a remainder including Fe and unavoidable impurities, in which the unavoidable impurities contain P: 0.015% or less, S: 0.015% or less, Cu: 0.2% or less, V: 0.2% or less, Ni: 0.3% or less, Co: 1.5% or less, B: 0.005% or less, W: 1.5% or less, and Nb: 0.07% or less in terms of % by weight based on the first layer welding section. |
地址 |
Hokkaido JP |