工艺参数对不锈钢薄板激光切割质量的影响  

Effect of Process Parameters on Laser Cutting Quality for Stainless Steel Sheets

作　　者：冯巧波[1,2] 赵旺初 李永兵 

机构地区：[1]上海交通大学上海市复杂薄板结构数字化制造重点实验室,上海200240 [2]上海电力学院创新创业工程训练中心,上海201300

出　　处：《机械设计与研究》2017年第6期118-121,共4页Machine Design And Research

基　　金：上海市教育委员会重点学科资助项目(J51304)

摘　　要：采用YAG脉冲激光切割机对1 mm厚的304不锈钢薄板进行了切割试验,通过正交试验方法,研究了激光切割工艺参数对切口表面的宏观形貌、切缝宽度和端面粗糙度的影响规律,并对激光切割工艺参数进行了优化。结果表明:随着电流增大,切口下表面挂渣量增大;随着电流、脉宽和频率的增大,切缝宽度均增大;随着脉宽的增大,端面粗糙度迅速增大,随着电流、频率和切割速度的增大,端面粗糙度先减小后增大。根据正交试验结果分析,激光切割1 mm厚的304不锈钢板的最佳工艺参数为电流120 A,脉宽0.5 ms,脉冲频率100Hz,切割速度300 mm/min。The experiments of laser cutting for 304 stainless steel with YAG pulse laser cutting machine was carried out. The effects of the laser cutting process parameters on macro morphology of cutting surthce, cutting seam width and cross- sectional surface roughness were studied to optimize the laser cutting process parameters with orthogonal test. Results show that, with the increasing of current the dross increases; the cutting seam width increase with the increasing of current, pulse width and frequency. As the pulse width increases, the surface roughness increases rapidly. And the surface roughness increase with the increasing of current, frequency and cutting speed. Results also show that, when 304 stainless steel is cut by YAG pulse laser, optimizing process parameters are 120 A eurrent, 0.5 ms pulse width, 100 Hz frequency, and a cutting speed of 300mm/min.

关 键 词：激光切割 工艺参数 正交试验 304不锈钢 

分 类 号：TG485[金属学及工艺—焊接]