发明授权
- 专利标题： Rotor for steam turbine and method of manufacturing the same
- 专利标题（中）： 蒸汽轮机转子及其制造方法
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申请号： US11917547申请日： 2006-06-09
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公开(公告)号： US08485788B2公开(公告)日： 2013-07-16
- 发明人: Hideyuki Arikawa , Akira Mebata , Masahiko Arai , Yoshitaka Kojima , Haijime Toriya
- 申请人： Hideyuki Arikawa , Akira Mebata , Masahiko Arai , Yoshitaka Kojima , Haijime Toriya
- 申请人地址： JP Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Mattingly & Malur, P.C.
- 优先权： JP2005-177112 20050617
- 国际申请： PCT/JP2006/311577 WO 20060609
- 国际公布： WO2006/134831 WO 20061221
- 主分类号： F01D5/06
- IPC分类号： F01D5/06 ; F01D25/00
摘要：
A steam turbine rotor shaft and method of manufacturing the same are provided wherein the sliding characteristics of a journal are improved, and the journal is free from welding cracks and does not need a post heat treatment. The low alloy steel coating layer having better sliding characteristics than 9 to 13% Cr heat resisting steel and an area rate of defects including pores and oxides in a range of 3 to 15% is formed by a high velocity flame spray coating method on a sliding surface of the journal.
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