发明授权
- 专利标题： Method of cooling rail weld zone, and rail weld joint
- 专利标题（中）： 钢轨焊接区和钢轨焊接接头的方法
-
申请号： US13138791申请日： 2010-03-30
-
公开(公告)号： US08557064B2公开(公告)日： 2013-10-15
- 发明人: Kenichi Karimine , Masaharu Ueda , Katsuya Iwano , Seiji Sugiyama
- 申请人： Kenichi Karimine , Masaharu Ueda , Katsuya Iwano , Seiji Sugiyama
- 申请人地址： JP Tokyo
- 专利权人： Nippon Steel & Sumitomo Metal Corporation
- 当前专利权人： Nippon Steel & Sumitomo Metal Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Kenyon & Kenyon LLP
- 优先权： JP2009-081587 20090330; JP2009-175646 20090728
- 国际申请： PCT/JP2010/002303 WO 20100330
- 国际公布： WO2010/116680 WO 20101014
- 主分类号： C21D9/04
- IPC分类号： C21D9/04 ; C22C38/02
摘要：
The invention provides a method of cooling a rail weld zone. The method includes a first rail web portion cooling process of cooling a rail web portion cooling region of the rail weld zone in a part of a temperature range until the completion of transformation from austenite to pearlite, a second rail web portion cooling process of cooling the rail web portion cooling region after the entire rail web portion of the rail weld zone is transformed to pearlite, a foot portion cooling process of cooling a foot portion of the rail weld zone, and a head portion cooling process of cooling a head portion of the rail weld zone. When cooling time of the first and second rail web portion cooling processes is t minute, a k value satisfies an expression represented as −0.1t+0.63≦k≦−0.1t+2.33.
公开/授权文献
信息查询
