摘要
运用宏观分析、显微组织检查、断口分析、化学成分与硬度测试等手段对摩托车上的刹车毂进行了失效分析,结果表明摩托车刹车毂断裂是由弹簧最先断裂引起,而硬度过高,表面质量差,是导致该弹簧早期疲劳断裂的主要原因。
By macroscopic and microstructure examination, fractography, chemical composition and hardness testing, etc. , the failure of the brake drum in motorcycle was analyzed. The results show that brake drum fracture is caused by spring fracture initially. The wrong steel grades of spring material, high hardness and poor quality of the surface are the main reasons for fatigue fracture of spring.
出处
《热加工工艺》
CSCD
北大核心
2012年第2期219-220,共2页
Hot Working Technology
关键词
刹车毂
弹簧
失效分析
brake drum
spring
failure analysis
