| 发明名称 | Low alloy steel material for generator rotor shafts | ||
| 摘要 | Disclosed is a low alloy steel material for generator rotor shafts, which has tensile strength of not less than 700 MPa at room temperature. Preferably the low alloy steel material consists of, by mass percent, 0.15 to 0.35% carbon, 0.01 to 0.10% Si, 0.10 to 0.50% Mn, 1.3 to 2.0% Ni, 2.1 to 3.0% Cr, 0.20 to 0.50% Mo, 0.15 to 0.35% Cu, 0.06 to 0.14% V, and the balance of Fe and unavoidable impurities. | ||
| 申请公布号 | US8853903(B2) | 申请公布日期 | 2014.10.07 |
| 申请号 | US200912559628 | 申请日期 | 2009.09.15 |
| 申请人 | Mitsubishi Hitachi Power Systems, Ltd. | 发明人 | Mori Takanobu |
| 分类号 | H02K7/10;C22C38/42;C22C38/44;C22C38/46;C22C38/04;C22C38/02 | 主分类号 | H02K7/10 |
| 代理机构 | Mattingly & Malur, PC | 代理人 | Mattingly & Malur, PC |
| 主权项 | 1. A low alloy steel for generator rotor shafts, consisting essentially of, by mass percent, 0.15 to 0.35% carbon, 0.01 to 0.10% Si, 0.10 to 0.50% Mn, 1.3 to 2.0% Ni, 2.1 to 3.0% Cr, 0.20 to 0.50% Mo, 0.20 to 0.30% Cu, 0.06 to 0.14% V, an absence of tungsten, and the balance of Fe and unavoidable impurities, wherein the low alloy steel has not higher than 275 AT/m of magnetizing force and wherein the low alloy steel has a FATT of not higher than 7° C. | ||
| 地址 | Kanagawa JP | ||