薄壁不锈钢圆管激光切割工艺研究及夹具设计  

Study on Laser Cutting Process of Thin-Walled Stainless Steel Tube and Fixture Design

作　　者：李淑玉[1] 田新国[2] 贺敬地[2] 刘超[2] 

机构地区：[1]青岛理工大学汽车与交通学院,山东青岛266033 [2]青岛理工大学机械工程学院,山东青岛266033

出　　处：《应用激光》2011年第3期248-250,共3页Applied Laser

摘　　要：采用固体脉冲Nd:YAG激光器研究脉冲电流、切割速度和氮气压力对壁厚为1mm的薄壁不锈钢圆管切割质量的影响。以切缝宽度和切口表面粗糙度作为衡量指标,通过正交试验得出氮气压力是薄壁不锈钢圆管切割质量的主要影响因素,其次是脉冲电流,切割速度对切割质量的影响在三个因素中最小,其最优工艺参数组合为:脉冲电流I=170A,切割速度v=40mm/min,氮气压力P=0.8 MPa。设计实验所用薄壁不锈钢圆管的专用夹具,解决了其采用直接装夹方式时装夹变形和定位精度低的问题。The pulse current, cutting speed and nitrogen pressure, which influence the cutting quality of thin-walled stainless steel tube, have been studied with solid pulse Nd：YAG laser. The cutting quality is measured by the kerf width and surface roughness of the incision. The best process parameters have been gained with the orthogonal test. The high quality thin-walled stainless steel tube has been cut with the pulse current of 170 A, cutting speed of 40 mm/min and nitrogen pressure of 0.8 MPa. Design a special fixture of thin-walled stainless steel tube to reduce clamping deformation and improve positioning accuracy.

关 键 词：激光切割 加工工艺 正交试验 薄壁不锈钢圆管 夹具 

分 类 号：TN249[电子电信—物理电子学] TG485[金属学及工艺—焊接]