激光切割高速飞行器尾翼的基础工艺试验研究

Experimental study on basic technology of laser cutting tail wing of high speed aircraft

为提高高速飞行器尾翼的加工效率,用激光切割工艺代替传统的电火花线切割工艺,以不同厚度的Q235钢板为切割对象,在不同参数组合下开展了尾翼激光切割加工试验。重点研究了激光切割速度v、氧气辅助气压P等关键工艺参数对尾翼表面粗糙度和表面形貌的影响规律,并得出上述工艺参数对不同厚度尾翼切割质量的影响规律。结果表明:切缝表面质量随切割速度与辅助气压的增大呈先升高后降低的趋势,随着钢板厚度的增大,其最佳切割速度变小,辅助气压无明显变化,加工工艺参数可调区间变小。

In order to improve the machining efficiency of the tail wing of high speed aircraft,the laser cutting technology was used instead of the traditional WEDM process.The laser cutting experiments of the tail wing were carried out under different parameter combinations with Q235 steel plate with different thickness as the cutting object.The effects of laser cutting speed v and oxygen assisted pressure P on the surface roughness and surface morphology of the tail wing were studied,and the effects of the above process parameters on the cutting quality of the tail wing with different thickness were obtained.The results show that the surface quality of cutting seam increases at first and then decreases with the increase of cutting speed and auxiliary air pressure.With the increase of steel plate thickness,the optimum cutting speed becomes smaller,the auxiliary air pressure does not change obviously,and the adjustable range of processing parameters becomes smaller.