55SI2MNVB弹簧钢板.65mn弹簧钢板材

常用弹簧钢的等温淬火规范

钢号      加热温度        等温淬火温度       等温保持时间          硬度HRC

T10A      800+-10           250-360             10-30              40-53

65        820+-10           320-340             15-30              46-48

65Mn      820+-10         270 / 320-340         15-30           52-54 / 46-48

50CrVA    850+-10            300                30-45                52

60Si2MnA  87+-10             280                30-45                52

50CrV钢气阀弹簧低温碳氮共渗(软氮化)与普通热处理后疲劳性能比较：