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本文研究了室温形变对20~#钢渗层厚度的影响。结果表明:1)随形变量的增加,层深增加,并在某一形变量下达到最大值,而后随形变量的增加,层深逐渐减小,最佳形变量受加热速度和渗硼保温时间的影响。2)渗硼的动力学曲线与渗碳、渗氮等化学热处理的动力学曲线不同,前者不具有典型的二次曲线特征。室温形变可使渗硼的动力学过程加速。根据层深及层深增加速度随渗硼时间的变化规律,将渗硼过程分为三个阶段,分别讨论了渗硼层在各阶段的生长特点及形变对其影响。
This paper studies the effect of room temperature deformation on the thickness of 20 ~ # steel. The results show that: 1) with the increase of deformation, the depth of layer increases and reaches the maximum under a certain deformation, and then decreases with the increase of deformation, and the optimum deformation is affected by the heating rate and boronizing insulation The impact of time. 2) The kinetic curve of boronizing is different from the kinetic curve of chemical heat treatment such as carburizing and nitriding. The former does not have typical conic characteristic. Room temperature deformation can accelerate the kinetics of boronizing. According to the variation rule of layer depth and layer depth with boronizing time, the boronizing process is divided into three stages, and the growth characteristics and the influence of deformation on the boronizing layer are discussed respectively.