1问题的提出车辆轮对作为列车运行的关键部件,其性能的好坏直接关系到列车的运行品质和安全,伴随着列车的重载提速,惯性增大导致冲动力加大,造成轮对踏面擦伤、剥离等故障不断增多,从我段及兄弟车辆段近几年的轮对检修统计数据来看(见表1),轮对踏面镟修总数和镟 1 PROBLEM PROBLEM Vehicle wheelset as a key component of train operation, the performance of the train is directly related to the quality and safety of the train, along with the train overloaded speed, inertia increases lead to impulsive force, resulting in the wheel on the tread Scratches, stripping and other failures continue to increase, from my paragraph and brother vehicle depot in recent years, the wheel alignment maintenance statistics (see Table 1), the total number of rounds of tread 镟 repair and 镟