The results show that with the increase of quenchtemperature strength rise but toughness is worse;
结果表明：随着淬火温度升高，材料强度提高，韧性降低；
2
The results indicate that the mistake choice of material, unreasonable quenchtemperature and too small region of MF quenching are the cause of transmission shaft fracture.
结果表明材料选择错误、淬火温度不当，以及中频淬火区域过小是导致传动轴断裂的原因。
3
The benefits of gas heating can be combined with the billet taper Quench to provide billets with a precise temperature taper.