锻压工艺对机械曲柄冲击和腐蚀性能的影响

Effect of Forging Process on Impact and Corrosion Properties of Mechanical Cranks

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 cranks were forged by using different processes. And the impact property and corrosion resistance were tested and analyzed. The results show that： under the condition of test, both of impact property and corrosion resistance of the crank improve firstly and then decrease, with initial forging temperature increasing from 1100℃ to 1220℃, finial forging temperature increasing from 710℃ to 800℃ or forging speed increasing from 60 mm/min to 180 ram/rain. The optimized initial forging temperature, finial forging temperature and forging speed are 1205, 785℃and 120 mm/min, respectively.