摘要
针对U75V 60 kg/m钢轨在重载小半径线路中出现的探伤报警,对报警钢轨进行了宏观形貌、非金属夹杂物检验、低倍和显微组织检验等分析。分析结果表明,该钢轨在重载小半径曲线上,通过量达到4亿吨,使用状况良好。钢轨试样为接触疲劳裂纹伤损,与钢轨使用条件和线路运营情况有关,与钢轨材质无关。
Aiming at the defect inspection alarming of U75 V 60 kg/m rail in small radius curve section of heavy-haul railway,the tests of macroscopic appearance,non-metallic inclusion grade,macrostructure and microstructure examination of the alarmed rail were carried out and the results were analyzed. The analysis results show that the rail was in good condition after 400 million tons passage. The defect of the tested rail is contact fatigue crack,which is related to the rail operating conditions of and the railway line operation conditions. The defect is independent of the rail quality.
出处
《钢铁钒钛》
CAS
北大核心
2018年第3期158-164,共7页
Iron Steel Vanadium Titanium
