关键词: 膜片弹簧；宏观分析；硬度检测；离合系统

Abstract: The rupture of the clutch diaphragm spring directly leads to the damage of the clutch system, which leads to the outage of the vehicle, and the customer complains a lot. In this paper, through the diaphragm spring failure sample fracture macro analysis, scanning electron microscope (SEM) micro morphology analysis, chemical composition analysis, hardness testing analysis and metallographic and inclusion analysis, and so on, a thorough and comprehensive analysis of the clutch diaphragm spring fracture causes, find the main cause, and then find specific solutions. At the same time, the parameter matching theory of the vehicle clutch system is checked, and the reasons for the failure of the diaphragm spring are analyzed.

Key words: Diaphragm spring; Macro analysis; Hardness testing; Clutch system