根据激光加热和熔融过程中的能量守恒方程，通过假设一种符合物理和数学要求的温度分布形式，得到材料熔融前后的温度分布、熔融界面推进速度和熔融深度变化的解析解，并以硅材料为例作了计算说明 According to the energy conservation equation in the laser heating and melting process, the temperature distribution before and after melting, the advancing velocity and melting depth of the melt interface are obtained by assuming a temperature distribution which meets the physical and mathematical requirements. As an example for calculation instructions