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研究了稀土对４５钢气体软氮化性能的影响，主要包括稀土对４５钢气体软氮化渗层的深度、硬度分布、显微组织以及炉内气氛压力的影响。实验结果表明：在相同工艺条件下，渗剂中加入一定浓度范围的稀土，有利于炉内气体渗剂的加速分解而使炉内气氛压力升高，加速了４５钢气体软氮化过程的进行，提高了渗层的深度和硬度，改善了渗层的组织。
The effects of rare earth on the soft nitriding properties of 45 steel were studied. The effects of rare earth on the depth, hardness distribution, microstructure and atmospheric pressure of 45 steel were investigated. The experimental results show that under the same process conditions, adding a certain concentration range of rare earth into the infiltration agent is conducive to the accelerated decomposition of the gas permeable agent in the furnace to raise the pressure of the atmosphere in the furnace and accelerate the process of soft nitriding of 45 steel , Improve the depth of the infiltration layer and hardness, improve the organization of the infiltration layer.