通过对热轧钢轨中残余应力测试和评定方法的比较,以及对国产和进口钢轨的残余应力进行测试和分析,找出国产热轧钢轨在残余应力控制方面与国外钢轨存在的差距。根据影响热轧钢轨残余应力的因素,提出降低和优化钢轨中残余应力的措施。 Through the comparison of the residual stress testing and evaluation methods in the hot-rolled rail and the testing and analysis of the residual stress of the domestic and imported rails, the gap between the domestic and foreign rails of the domestic hot-rolled rail is found out. According to the factors affecting the residual stress of the hot rolled rail, the measures to reduce and optimize the residual stress in the rail are proposed.