摘要
采用扫描电子显微镜、金相显微组织观察分析、硬度测试、喷丸覆盖率检测和材质的化学成分分析等,对断裂失效的弹簧进行分析。检测结果表明:弹簧在试验前已经裂开,如控制好回火条件,可减少缺陷产生的可能。
The reasons for the fracture of spiral spring were analyzed through observing the fracture morphology by means of scanning electron microscope,detecting metallographical microstructure,measuring the hardness,examining the quality of shot blasting and analyzing the chemical compositions of the material.The result shows that the spring has cracked before the test,and that a well controlled tempering condition can reduce the possibility of defects.
作者
胡孝昀
HU Xiaoyun(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《机械制造与自动化》
2021年第1期57-60,88,共5页
Machine Building & Automation
关键词
弹簧
断裂
失效分析
疲劳损伤
spiral spring
fracture
failure analysis
fatigue damage
