上海交通大学学报（英文版） ›› 2012, Vol. 17 ›› Issue (3): 312-314.doi: 10.1007/s12204-012-1275-z

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Analyse of Warm Surface Rolling on the Grooved Steel Axle

LIU Xiang-rua (刘香茹), ZHOU Xu-dongb (周旭东)   

  1. (a. School of Physics and Engineering; b. School of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China)
  • 出版日期:2012-06-30 发布日期:2012-11-15
  • 通讯作者: LIU Xiang-rua (刘香茹) E-mail:xiangruliu314@126.com

Analyse of Warm Surface Rolling on the Grooved Steel Axle

LIU Xiang-rua (刘香茹), ZHOU Xu-dongb (周旭东)   

  1. (a. School of Physics and Engineering; b. School of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China)
  • Online:2012-06-30 Published:2012-11-15
  • Contact: LIU Xiang-rua (刘香茹) E-mail:xiangruliu314@126.com

摘要： Warm surface rolling is a working process between room temperature and re-crystallization temperature. With warm surface rolling of steel grade 45 grooved axle, its fatigue lifespan was measured by the endurance bending test. The influence of surface rolling reduction on the axle fatigue life period was experimentally studied at different surface rolling temperatures. The experimental results show that the fatigue life of the steel axles can be significantly improved by the warm surface rolling process. The optimum rolling reductions for the maximum fatigue life at different warm surface rolling temperatures were explored. The microstructures of the steel axles were analyzed. The surface strength improved by refining grains after the warm surface rolling was calculated by the Hall-Petch model. These research achievements could be also valuable to the relevant works.

关键词: surface hardening, warm surface rolling, physical simulation, fatigue lifespan

Abstract: Warm surface rolling is a working process between room temperature and re-crystallization temperature. With warm surface rolling of steel grade 45 grooved axle, its fatigue lifespan was measured by the endurance bending test. The influence of surface rolling reduction on the axle fatigue life period was experimentally studied at different surface rolling temperatures. The experimental results show that the fatigue life of the steel axles can be significantly improved by the warm surface rolling process. The optimum rolling reductions for the maximum fatigue life at different warm surface rolling temperatures were explored. The microstructures of the steel axles were analyzed. The surface strength improved by refining grains after the warm surface rolling was calculated by the Hall-Petch model. These research achievements could be also valuable to the relevant works.

Key words: surface hardening, warm surface rolling, physical simulation, fatigue lifespan

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