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针对圆柱圆周表面激光淬火时出现的问题,提出了考虑激光淬火过程中已淬火区域残留温度场对淬火区域温度场形成产生的影响的圆柱圆周表面激光淬火温度场算法。在此算法中,假设激光光束为均匀能量分布,通过对基于半无限体移动面热源的瞬态温度场算法的改进,实现对圆柱圆周表面激光淬火瞬态温度场的计算。通过对不同直径的圆柱圆周表面激光淬火温度场进行计算,从而对温度场耦合对圆柱圆周表面激光淬火温度场形成所产生的影响进行分析。结果说明,圆柱直径的大小影响着温度场耦合的程度,进而影响着激光淬火温度场的形成。
In order to solve the problem of laser quenching on the cylindrical surface, a laser quenching temperature field calculation method is proposed based on the influence of the residual temperature field in the quenched area on the formation of the quenching area. In this algorithm, assuming that the laser beam has a uniform energy distribution, the transient temperature field of the cylindrical laser beam quenching can be calculated by the improvement of the transient temperature field algorithm based on the semi-infinite body moving surface heat source. By calculating the laser quenching temperature field of the cylindrical surface with different diameters, the influence of temperature field coupling on the formation of the laser quenching temperature field on the cylindrical surface is analyzed. The results show that the size of the cylinder diameter affects the degree of coupling of the temperature field, which in turn affects the formation of the laser quenching temperature field.