静态溶液辅助激光抛光不锈钢的正交实验研究

Orthogonal Experimental Study on Static Solution Assisted Laser Polishing of Stainless Steel

摘要: 静态溶液辅助激光抛光过程中，激光加工工艺参数对抛光效果有很大影响。采用光纤脉冲激光器(波长为1064 nm，脉冲宽度为100 ns)对Custom 455不锈钢表面进行抛光实验研究，用田口正交实验的方法，对影响抛光效果的参数包括平均功率、扫描间隔、扫描速度、扫描次数4个参数设计实验方案，并对抛光后试件表面粗糙度变化及形貌进行比较。通过Minitab进行方差分析，结果发现原始表面粗糙度会影响抛光效果，且存在最佳抛光效果的工艺参数：扫描速度为11 mm/s，扫描次数为6次，平均功率为12 W，扫描间隔为0.1 mm。在此工艺参数下可使粗糙度下降80%，得到更好的抛光效果。

Abstract: In the process of static solution assisted laser polishing, laser processing parameters have great influence on the polishing effect. Optical fiber pulse laser (the wavelength is 1064 nm, pulse width of 100 ns) was used to polishing the surface of Custom 455 stainless steel. The parameters affecting the polishing effect included average power, scanning interval and scanning speed. The experiment scheme was designed with four parameters of scanning times, and the surface roughness and morphology of the samples after polishing were compared. The results of variance analysis by Minitab show that the original surface roughness will affect the polishing effect. Process parameters with the best polishing effect: scanning speed 11 mm/s, 6 times, average power 12 W, scanning interval 0.1 mm. The roughness can be reduced by 80% under this process parameter, and better polishing effect can be obtained.