摘要
通过宏观检验、化学成分分析、热酸蚀检验、断口分析、金相分析等方法对火车电机轴内部缺陷产生的原因进行分析。结果表明:火车电机轴超声波探伤超标缺陷是电机轴的内部裂纹,这种内部裂纹是零件含氢量过高引起的白点缺陷。
The cause for internal defects of train motor shaft are analyzed by means of macroscopic examination, chemical analysis, hot acid etching test, fracture analysis, metallographic analysis and so on. The results show that the ultrasonicdefect is the internal crack in the motor shaft, and which is ＂ white spot ＂ caused by the excessive hydrogen content of theparts.
作者
孙莹杰
赵晓宏
曹亮亮
Sun Yingjie;Zhao Xiaohong;Cao Liangliang(Henan Jiyuan Iron ＆ Steel（Group）Co.,Lt)
出处
《河南冶金》
2018年第4期19-20,56,共3页
Henan Metallurgy
关键词
内部缺陷
白点
氢含量
准解理断口
Internal defects
white spot
hydrogen content
quasi-cleavage fracture
