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采用不同工艺锻造了45钢机械曲柄,并进行了曲柄冲击性能和耐腐蚀性能的测试与分析。结果表明:在试验条件下,随始锻温度从1100℃增至1220℃、终锻温度从710℃逐步增至800℃或锻压速度从60 mm/min增至180 mm/min,曲柄冲击性能和耐腐蚀性能均先提高后下降。曲柄的始锻温度、终锻温度和锻压速度分别优选为1205、785℃、120 mm/min。
45 steel mechanical crankshafts were forged using different processes and tested and analyzed for crank impact and corrosion resistance. The results show that the initial forging temperature increases from 1100 ℃ to 1220 ℃, the final forging temperature increases from 710 ℃ to 800 ℃ or the forging speed increases from 60 mm / min to 180 mm / min under the experimental conditions, Corrosion resistance are first increased and then decreased. The initial forging temperature, final forging temperature and forging speed of the crank are preferably 1205, 785 ° C and 120 mm / min, respectively.