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建立45钢无限长轴对称工件连续感应淬火过程的二维物理模型,并进行温度场的数值模拟。根据连续感应淬火过程中温度场的分布给出了判断淬硬层深度的依据,并结合Maynier组织预测模型与硬度公式计算出工件不同深度处的硬度值进行验证。结果表明,可根据工件感应加热区域进入喷水冷却时刻的径向温度分布曲线来预测连续感应淬火最终淬硬层深度。根据这一结论,可以用所建立的有限元模型对连续感应淬火工件淬硬层深度进行预测。
A two-dimensional physical model of the continuous induction hardening process of an infinitely long 45 axisymmetric workpiece was established and the numerical simulation of the temperature field was carried out. According to the distribution of temperature field in continuous induction hardening process, the basis for judging the depth of hardened layer is given. The hardness values of workpieces at different depths are calculated with Maynier tissue prediction model and hardness formula. The results show that the depth of the final hardened layer of continuous induction hardening can be predicted according to the radial temperature distribution curve of the workpiece induction heating zone at the time of water jet cooling. According to this conclusion, the depth of hardened layer of continuous induction hardening workpiece can be predicted by the finite element model established.