机车电机转轴42CrMo超声波探伤缺陷分析  

Defects of Ultrasonic Inspection on Traction Motor Rotation Shaft 42CrMo

作　　者：潘小娟[1] 李军[1] 杨彦中 

机构地区：[1]山西太钢不锈钢股份有限公司技术中心,山西太原030003

出　　处：《山西冶金》2016年第5期13-14,18,共3页Shanxi Metallurgy

摘　　要：对机车电机转轴42CrMo超声波探伤缺陷进行了低倍组织、化学成分、微观分析、金相组织、断口形貌等分析。结果表明,电机转轴钢质纯净,化学成分、金相组织无异常,低倍组织存在锻造偏心、锭型偏析、裂纹;缺陷是由于锻圆加热温度不均匀使得在锻造过程中金属流向不均匀而导致材料变形不均匀造成的。The macrostructure,chemical analysis,microcosmic analysis,metallographic phase,and fracture morphology for the defects of ultrasonic inspection on traction motor rotation shaft 42 CrMo steel were analyzed.The results show that the steel is pure and chemical composition,metallographic structure have no defect.The macrostructure has defects of forging eccentricity,ingot segregation,and cracking.Due to uneven heating temperature of forged round,and uneven flow of metal in the forging process,the uneven deformation of the material causes defects.

关 键 词：电机转轴 42CrMo 超声波探伤 缺陷分析 

分 类 号：TG115.285[金属学及工艺—物理冶金]