摘要
运用超声波检测、宏观低倍检测、化学成分分析、金相分析,以及扫描电镜断口分析等手段,对大截面渗碳齿轮轴生产过程中缺陷性质进行研究,发现缺陷性质为氢致白点,在缺陷处取样研究,分析防控方案并进行工艺试验,探索氢脆白点产生机理,进而采用冶炼、热处理措施实现工艺改进的目的。
By means of ultrasonic flaw,macroscopic low-magnification detection,chemical analysis,metallographic analysis,and scanning electron microscopy fracture analysis,the nature of defects in the production process of large-section carburized gear shafts was studied.It was found that the nature of the defects was hydrogen-induced white spots.Samples were taken at the defect sites for research,and analysis and prevention and control plans were developed.Process tests were conducted to explore the mechanism of hydrogen embrittlement white spots,and then smelting and heat treatment measures were adopted to achieve the purpose of process improvement.
作者
胡寒婷
毛丰
赵学谦
王博
HU Hanting;MAO Feng;ZHAO Xueqian;WANG Bo(CITIC Heavy Industries Co.,Ltd.,Luoyang 471039,Henan,China;Longmen Laboratory,Luoyang 471039,Henan,China;State Key Laboratory of Intelligent Mining Heavy Equlipment,Luoyang 471039,Henan,China)
基金
龙门实验室重大科技项目(231100220400)。
关键词
大截面
渗碳齿轮轴
工艺试验
氢脆白点
工艺改进
large-section
carburized gear shafts
process tests
hydrogen embrittlement white spots
process improvement
