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提高机器零件特别是齿轮的承载能力、可靠性和寿命的任务,迫切需要改进其最后加工的工艺方法。本文为探讨表面塑变强化-精整处理时,自由滚压过程对齿轮齿承载层状态和物理-机械特性(强化层厚度和强化程度、表面粗糙度、精度、显微组织、残余应力和亚显微组织弥散度)的影响所进行的研究结果。研究对象是内燃机车牵引齿轮实物(m=10毫米,z=75,x=+0.437,b=140毫米),材料为45XH热调质钢(淬火及高温回火到硬度HB255-311),铣齿(在5342型铣齿机上采用P18钢粗铣刀)后进行了表面塑变强化-精整,其余
To improve the bearing capacity, reliability and life-span of the machine parts, especially the gears, there is an urgent need to improve the process of the final machining. In order to investigate the effect of free rolling process on the state of gear tooth bearing layer and the physical-mechanical characteristics (thickness and degree of strengthening layer, surface roughness, precision, microstructure, residual stress, Microscopic dispersion) of the results of the study carried out. The research object is the traction gear of diesel locomotive (m = 10mm, z = 75, x = + 0.437, b = 140mm), the material is 45XH heat quenched and tempered steel (quenched and tempered to hardness HB255-311) Tooth (P42 steel roughing cutter on 5342 milling machine) was used to perform surface plastic-hardening-finishing