在各类炮车、坦克、陆军战车以及其它越野运输车辆中,它们的悬挂系统多采用扭力轴这一弹簧结构件。因此,提高扭力轴剪切弹性极限,并使其具有较好的塑性和韧性,从而有较高的扭转疲劳强度,对提高车辆在起伏路面高速运动的平稳性和使用寿命,极为重要。 In the various types of artillery, tanks, army vehicles and other off-road vehicles, their suspension system to use more torque shaft spring structure. Therefore, it is very important to improve the shear elastic limit of torsion shaft and to make it have good ductility and toughness, so as to have higher torsional fatigue strength and to improve the stability and service life of the vehicle during the high-speed movement of the undulating road.