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45钢的常规冷却介质是水溶液,但在材料成分有所波动时,淬火介质也应有所改变。我厂有一种用45钢制作的机油泵传动齿轮,齿数12,模数2,分度圆螺旋角为38°。图纸要求齿面淬硬HRC 40～45。在GP-60高频上感应加热。原工艺参数为:阳压10.5～11.5V,阳流和栅流的比值采用5:1左右。即阳流为1.8～2.2A,栅流为0.35～0.45A,加热时间为3～4秒,冷却介质为清水冷透。回火温度为300±10℃,保温时间为45～60
45 steel conventional cooling medium is an aqueous solution, but when the material composition is fluctuating, the quenching medium should also be changed. I plant a 45 steel production of oil pump drive gear, the number of teeth 12, modulus 2, indexing round helix angle of 38 °. Drawing requirements hardened tooth surface HRC 40 ~ 45. Induction heating on GP-60 high frequency. The original process parameters: positive pressure 10.5 ~ 11.5V, the ratio of positive current and gate current using about 5: 1. That is, 1.8 ~ 2.2A positive flow, 0.35 ~ 0.45A gate flow, heating time is 3 ~ 4 seconds, the cooling medium is clear water through. Tempering temperature is 300 ± 10 ℃, holding time is 45 ~ 60