Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd.

Jianhua Liu

Yong Deng

Ming Zou

Hua Guo

Zhenyu Han

Chunjian Wang

Jihai Jia

Yanzhong Wang

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&#xb0; C. at a tread center of a rail head of the turnout rail; accelerated cooling the naturally cooled turnout rail to 230-270&#xb0; 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&#xb0; C./s, a cooling rate at the working side of the rail head increasing by 0.1-1.0&#xb0; C./s based on 1.5-5.0&#xb0; 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&#xb0; C./s to decrease a temperature of the tread center of the rail head to 265-270&#xb0; C.; and finally, naturally cooling the turnout rail to an ambient temperature.

Heat treatment method for bainitic turnout rail

Growing community of inventors

Panzhihua, China

Jianhua Liu