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一、前言 WK—4电铲推压齿轮直径是374 mm,模数24,齿数14,几何形状和其他尺寸如图1所示。田内各厂家使用ZG35CrMo,而我厂使用ZG42MnMoV制造。图1 4m~3电铲推压齿轮推压齿轮是WK—4电铲的主要易磨损件之一,与推压齿条咬合使用。它的生产工艺流程是:铸造—退火—调质—中频骑齿加热表面淬火—低温回火。这样生产的推压齿轮,齿的淬硬层只有3—5mm,且不均布,齿顶和节圆部分硬度较高,达HR_C58左右,而齿根得不到应有的强化, 该件在露天恶劣条件下工作,总有大量
I. Introduction WK-4 shovel push gear diameter is 374 mm, modulus 24, the number of teeth 14, geometry and other dimensions shown in Figure 1. Each manufacturer in the field uses ZG35CrMo, and I use ZG42MnMoV manufacturing plant. Figure 1 4m ~ 3 shovel push gear Push gear is one of the main wear parts of WK-4 shovel, used with the push rack. Its production process is: casting - annealing - quenching - IF Riding heating surface hardening - low temperature tempering. This production of push gear, tooth hardened layer is only 3-5mm, and not uniform cloth, addendum and pitch circle part of the higher hardness, up to about HR_C58, while the root is not due to strengthen the pieces in the Work in harsh conditions in open air, there are always a lot