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1. 发明授权

US09394581B2 Heat treatment method for bainitic turnout rail 有权
标题翻译：贝氏体导轨的热处理方法
公开(公告)号：US09394581B2
公开(公告)日：2016-07-19
申请号：US13974744
申请日：2013-08-23
申请人： PANGANG GROUP PANZHIHUA IRON & STEEL RESEARCH INSTITUTE CO., LTD.
发明人： Zhenyu Han , Ming Zou , Jihai Jia , Hua Guo , Yanzhong Wang , Jianhua Liu , Yong Deng , Chunjian Wang
IPC分类号： C21D9/04
CPC分类号： C21D9/04 , C21D2211/002
摘要： The present disclosure discloses a heat treatment method for a bainitic turnout rail, which includes: naturally cooling the turnout rail at a temperature in an austenite region after being finishing rolled to 450-480° C. at a tread center of a rail head of the turnout rail; accelerated cooling the naturally cooled turnout rail to 230-270° C. at the tread center of the rail head, a cooling rate at the tread center and a non-working side of the rail head being 1.5-5.0° C./s, a cooling rate at the working side of the rail head increasing by 0.1-1.0° C./s based on 1.5-5.0° C./s; continuously accelerated cooling the working side, the tread center and the non-working side of the rail head at a cooling rate of 0.05-0.25° C./s to decrease a temperature of the tread center of the rail head to 265-270° C.; and finally, naturally cooling the turnout rail to an ambient temperature.
摘要翻译：本发明公开了一种用于贝氏体轨道轨道的热处理方法，其包括：在所述轨道头的轨道头的胎面中心完成轧制后的奥氏体区域的温度下自然冷却所述轨道轨道道岔铁路在轨头的胎面中心将自然冷却的道岔轨道加速冷却至230-270℃，胎面中心处的冷却速度和轨头的非工作侧为1.5-5.0℃/ 轨头工作侧的冷却速度以1.5-5.0℃/ s的速度增加0.1-1.0℃/秒; 以0.05-0.25℃/ s的冷却速度连续加速冷却轨头的工作侧，胎面中心和非工作侧，将轨头的胎面中心的温度降低到265-270° C。; 最后自然地将道岔轨道冷却到环境温度。

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