Abstract: The quenching and tempering process on mechanical properties of a new high strength spring steel 60SiCrV7 (0.54C~0.65C,1.35～1.65Si,0.7～1.0Cr,0.1～0.2V)has been tested the results showed that by optimum heat treatment process - oil quenched at 920 ℃ and tempered between 430 ℃ and 450 ℃,the tensile strength of steel was 1750 MPa, yield strength 1440 MPa and impact energy 9 J, the steel had high fatigue life able to meet the design requirement of high strength spring.

摘要： 试验研究了新型高强度弹簧钢60SiCrV7(%:0.54～0.65C,1.35～1.65Si,0.7～1.0Cr,0.1～0.2V)的淬、回火工艺对力学性能的影响,结果表明,经最佳热处理工艺920℃油淬,430～450℃回火后,钢的抗拉强度为1750MPa,屈服强度1440MPa,冲击功9J,具有高的疲劳寿命,可以满足高强度弹簧设计需求。

关键词: 高强度弹簧钢, 60SiCrV7, 热处理, , 机械性能, 疲劳寿命