论文部分内容阅读
采用四因素四水平的田口正交阵列法,在厚度为3mm的高温合金上进行了Nd…YAG激光脉冲环切打孔实验,分析了脉冲能量、离焦量、环切圈数及环切速度对小孔锥度和圆度的影响,并对工艺参数进行了优化,得到了最小的微孔锥度和较好的微孔圆度。结果表明,激光环切打孔时,脉冲能量、离焦量、环切圈数和环切速度对微孔圆度影响不大,但离焦量对微孔锥度影响最大;得到最小孔锥度所用的最佳工艺参数组合为:环切圈数6,环切速度6mm/min,脉冲能量1.5J,离焦量-0.5mm;孔出口处的圆度比孔入口处的圆度好。
The four-level Taguchi orthogonal array method was used to test the Nd: YAG laser pulsed ring-opening experiments on the superalloy with the thickness of 3 mm. The pulse energy, the amount of defocus, the number of rings and the ring-rolling speed On the cone taper and roundness of the impact, and process parameters were optimized, the smallest micropore taper and better micropore roundness. The results show that the pulse energy, the amount of defocus, the number of rings and the ring-cutting speed have little effect on the micro-circularity, but the defocus amount has the greatest influence on the micro-hole taper. The optimum process parameters are as follows: the number of rings 6, the ring cutting speed 6mm / min, the pulse energy 1.5J, the amount of defocus -0.5mm; the roundness at the exit of the hole is better than the roundness at the entrance of the hole.