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介绍了自主研发设计的由感应加热模具、测温系统、控温系统等组成的离合器膜片弹簧感应回火生产线。通过感应加热模具对膜片弹簧进行回火,经过数次生产试验,确定了工艺参数。结果表明,离合器膜片弹簧经双温热模一次性感应加热回火后,中温区回火后的硬度为45～50HRC,显微组织为回火索氏体;低温区回火后的硬度为55～60HRC,显微组织为回火马氏体,满足了产品用户要求。
This paper introduces a clutch diaphragm spring induction tempering production line composed of induction heating mold, temperature measurement system and temperature control system. Through the induction heating mold on the diaphragm spring tempering, after several production tests to determine the process parameters. The results show that the hardness of the clutch diaphragm spring is 45-50HRC and the microstructure is tempered sorbite after the tempering spring of the clutch diaphragm is tempered by one-time induction heating. The hardness after tempering in the low temperature zone is 55 ~ 60HRC, the microstructure of tempered martensite, to meet the product user requirements.