Wheel set is one of the most important rolling components in the vehicle . it affects the safety of railway transportation directly . our country ' s train vehicle departments have specific standards about wear and tear limit of all kinds of wheels 我国铁路车辆部门对各型轮对的磨耗限度均有明确的规定，在段修时对轮对综合参数进行检测是保障行车安全的一项重要措施。
