采用感应预热的连续激光淬火

Continuous Laser Hardening with Induction Pre-Heating

模拟了钢件采用激光束进行表面连续淬火的新方法。这种热处理方法采用传统的感应器对淬火零件进行预热,以便减小温度梯度及随后产生的被处理材料的机械应力。该工艺的数学模型采用3D数值建立,其解法考虑了所有重要的非线性特性(被淬火钢的磁饱和曲线及其物理性能与温度的关系)。用典型的实例进行了说明,介绍了结果并进行了讨论。

A novel way of continuous surface hardening of steel bodies by a laser beam is modeled.This heat treatment is supplemented with pre-heating of the hardened parts by a classic inductor in order to reduce the temperature gradients and subsequent mechanical stresses in the processed material.The mathematical model of the process is solved numerically in 3D and the solution respects all important nonlinearities （a saturation curve of the hardened steel and temperature dependences of its physical properties）.The methodology is illustrated with a typical example,whose results are presented and discussed.