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采用不同的模具预热温度、始锻温度和终锻温度对Cu-Zn基汽车同步器齿环进行了锻造,并进行了磨损性能和冲击性能的测试与分析。结果表明:在试验条件下,随模具预热温度从200℃升高至300℃、始锻温度从720℃升高至800℃或终锻温度从590℃升高至710℃,齿环的磨损性能和冲击性能均先提高后下降。Cu-Zn基汽车同步器齿环的最佳工艺参数为:模具预热温度275℃、始锻温度780℃、终锻温度690℃。
Cu-Zn-based automotive synchronizer gear rings were forged using different mold preheating temperature, initial forging temperature and final forging temperature, and the wear performance and impact performance were tested and analyzed. The results show that under the experimental conditions, as the preheating temperature increases from 200 ℃ to 300 ℃, the initial forging temperature increases from 720 ℃ to 800 ℃ or the final forging temperature increases from 590 ℃ to 710 ℃, the wear of gear ring Performance and impact properties are increased and then decreased. Cu-Zn-based car synchronizer ring gear the best process parameters: mold preheating temperature of 275 ℃, the initial forging temperature of 780 ℃, the final forging temperature of 690 ℃.