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利用涡流无损检测技术对G20Cr Ni2Mo A轴承套圈渗碳层深度进行检测,确定了检测信号(阻抗值)与渗碳层深度之间的函数关系;利用DEFORM软件对轴承套圈进行热处理工艺的数值模拟,并将渗碳层深度的模拟结果与实验结果对比分析。结果表明:仿真值与实际测量的渗碳层深度误差小于0.9%,验证了模型的有效性和可靠性;测量套圈模型上与无损检测实验中相同位置点的渗碳层深度,并与涡流无损检测测量出的渗碳层深度比较,发现两者误差不超过1.8%。
The depth of carburized layer of G20Cr Ni2Mo bearing was measured by eddy current non-destructive testing technology, and the function of the detected signal (impedance value) and the depth of carburized layer was determined. The numerical value of the heat treatment process of bearing ferrule by DEFORM software Simulation, and the depth of carburized simulation results and experimental results were analyzed. The results show that the depth of carburized layer is less than 0.9%, which verifies the validity and reliability of the model. The depth of carburized layer at the same position on the ferrule and non-destructive test is measured and compared with the eddy current Non-destructive testing measured carburized layer depth comparison, found that the error between the two does not exceed 1.8%.