本文研究了20Cr钢渗碳工艺的综合控制问题,建立了渗层深度与表面碳浓度综合控制图。根据综合控制图可制定出同时确保表面碳浓度与渗层深度的炉气碳势与渗碳时间,按此碳势与时间控制渗碳后,零件表面碳浓度及渗层深度可同时满足技术要求。 In this paper, the comprehensive control of 20Cr steel carburizing process was studied, and the integrated control chart of the depth of infiltration layer and surface carbon concentration was established. According to the integrated control chart, the carbon potential and the carburizing time of the furnace gas can be determined while ensuring the surface carbon concentration and the depth of the carburizing layer. After controlling the carburizing according to the carbonic potential and the time, the surface carbon concentration and the carburizing depth can meet the technical requirements .