【摘要】 激光在工业应用中，相变硬化是一个重要的方面其工艺选择直接影响着相变硬化层的深度和宽度本论文从热传导基本方程出发，得出了光功率密度为高斯分布的激光功率、离焦量、扫描速度等与相变硬化层深度、宽度之间的关系编制了工艺参数选择的计算机软件经实验验证，理论计算与实验结果的相对误差为：硬化层宽度为５７％，硬化层深度为１８７％更多还原

【Abstract】 Laser phase transformation hardening is an important field of laser laser application industry,and the choice of its technological parameters influences the depth and width of hardening layer directly In this paper,from the basic equation of heat conduction,the relationship between parameters such as laser power of gauss distribution,out of focus and scanning velocity and the depth,width of hardening layer is obtained,and a series of computer soft ware about choice of technological parameters is compiled Experiment shows that the relativity error of width of hardening layer between theoretical calculation and experimental result is 5 7% and the error of depth is 18 7%更多还原