机车整体轮轮辋缺陷疲劳行为滚动台架试验研究  

Rolling Bench Test and Research on Locomotive Integral Wheel Rim Defect and Fatigue Behavior

作　　者：容长生 黄永巍[2] 张澎湃[2] 常崇义 张斌[2] 张弘[2] 

机构地区：[1]中国铁路总公司机务部,北京100844 [2]中国铁道科学研究院金属及化学研究所,北京100081 [3]中国铁道科学研究院铁道科学技术研究发展中心,北京100081

出　　处：《铁道技术监督》2017年第10期25-30,共6页Railway Quality Control

摘　　要：为了研究机车车轮轮辋缺陷疲劳扩展规律,选择包含轮辋表面缺陷和内部缺陷的机车车轮,在1∶1高速轮轨关系试验台上进行试验。经5万km滚动接触疲劳试验,所考察的轮辋内、外缺陷均未明显疲劳扩展,由此推测机车轮辋缺陷疲劳扩展速度较为缓慢。根据试验结果,提出制定合理的检修机车车轮超声波探伤缺陷判废标准的建议。To study the locomotive wheel rim defect and fatigue growth rules, a test is conducted on a 1∶1 highspeed wheel-rail relation test bench,selecting locomotive wheels with wheel rim surface defects and internal artifi-cial defects. After on a 50 000 km rolling rolling contact fatigue test,there are no obvious fatigue growth observed forboth the internal and external defects in the wheel rims. Therefore,it is concluded that the locomotive wheel rim de-fect and fatigue grow slowly. According to the test result,the article suggests to develop rational defect determinationcriteria for wheel ultrasonic testing during locomotive inspection and repair.

关 键 词：轮辋 台架试验 疲劳缺陷 疲劳扩展 

分 类 号：U260.14[机械工程—车辆工程]