重载齿轮轴工作承载大、冲击力强、要求安全性高,使用时除应具有优良的耐磨性能还应具有较高的接触疲劳强度和弯曲疲劳强度,同时具有较高的抗冲击和抗过载能力。因此,齿轮轴的渗碳热处理工艺是满足这些性能要求的关键。近几年,本公司20CrMnMo齿轮轴深层渗碳在后序磨削加工中经常出现磨削裂纹,导致齿轮 Heavy-duty gear shaft bearing large work, strong impact, requiring high safety, use should have excellent wear resistance in addition to high contact fatigue strength and bending fatigue strength, high impact and resistance at the same time Overload capacity. Therefore, the carburizing heat treatment of the gear shaft is the key to meeting these performance requirements. In recent years, the Company 20CrMnMo gear shaft deep carburizing grinding grinding often occur in the post-order cracks, resulting in gear