Transactions of Materials and Heat Treatment

Title：Influence of straightening speed of heavy rail on residual stress after straightening

Authors： Guo Xiping Fang Weixin

Unit： Inner Mongolia University of Science & Technology

KeyWords： heavy rail straightening straightening speed residual stress numerical simulation

ClassificationCode：TH16

year,vol(issue):pagenumber：2015,40(3):58-61

Abstract：

The influence of straightening speed of heavy rail on residual stress after straightening was studied. The FEM model of nine roller horizontal straightening with 60 kg·m-1 heavy rail was established by Pro/E, and the straightening process was simulated by ANSYS Workbench. The residual stresses after straightening by the straightening speed on-site was compared with that of the assumed. The results show that, with other conditions unchanged，the longitudinal residual tensile stress is less than 250 MPa when the straightening speed is at 1.4-1.6 m·s-1. Thus, the distribution of residual stress is reasonable and the straightening requirement is met. It has a great significance in the practical production site, because the efficiency increases by 16.7%-33.3% comparing with the condition under straightening speed of 1.2 m·s-1.

Funds：

内蒙古自治区自然科学基金资助项目（2012MS0717）

郭喜平（1962-），男，硕士，副教授通讯作者：方伟欣（1990-），男，硕士研究生

Reference：

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