离合器减振弹簧断裂原因  

Causes of clutch damping spring fracture

作　　者：骆玉城 岳高 田双息 林升垚 LUO Yucheng;YUE Gao;TIAN Shuangxi;LIN Shengyao(Guilin Fuda Co.,Ltd.,Guilin 541199,China;School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]桂林福达股份有限公司,桂林541199 [2]桂林电子科技大学机电工程学院,桂林541004

出　　处：《理化检验（物理分册）》2023年第11期62-65,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：广西自然科学基金项目(2021GXNSFBA196038);广西科技计划项目(桂科AD22035116);中国博士后科学基金项目(2022M710920)。

摘　　要：某型号离合器从动盘总成在扭转耐久性试验过程中,其减振弹簧发生断裂。采用宏观观察、化学成分分析、硬度测试、金相检验、扫描电镜及能谱分析等方法研究了该弹簧断裂的原因。结果表明:减振弹簧内侧存在原始裂纹和摩擦损伤,使弹簧在低应力作用下发生弯曲疲劳断裂。During the torsion durability test of a certain type of clutch driven plate assembly,its damping spring fractured.The reasons for the fracture of the spring were studied by macroscopic observation,chemical composition analysis,hardness testing,metallographic examination,scanning electron microscopy and energy spectrum analysis.The results show that there were original cracks and friction damage on the inner side of the damping spring which caused the spring to bend fatigue fracture under low stress.

关 键 词：减振弹簧 扭转耐久试验 摩擦损伤 疲劳断裂 

分 类 号：TB31[一般工业技术—材料科学与工程] TG115.2[金属学及工艺—物理冶金]