激光加热辅助引弧微爆炸加工工程陶瓷的试验研究

Experimental Study on Laser Heating-assisted Micro-detonation of Striking Arc Machining Engineering Ceramics

为验证激光加热辅助技术改善引弧微爆炸加工质量和提高加工效率的可行性,探索加工工艺参数对加工过程的影响规律,设计了激光加热辅助引弧微爆炸加工试验系统,并通过试验研究了工艺参数对材料去除率和崩碎的影响规律。试验结果表明:激光加热辅助引弧微爆炸加工陶瓷可以提高材料去除率,改善崩碎情况;加工效率随激光功率的增加而提高,随光斑尺寸的增大而降低,随距离的增加先提高后降低;崩碎随激光功率的增加而减少,随光斑尺寸的增大先减少后增多,随距离的增加先减少后增多。研究结果为激光加热辅助引弧微爆炸加工机理的研究和工艺参数的优化提供了参考依据。

For the purpose of proving feasibility that laser heating-assisted machining technology can improve micro-detonation of striking arc machining quality and increase efficiency of machining ceramics, and exploring the influence law of the machining parameters on the process of machining, the experimental system of laser heating-assisted micro-detonation of striking arc machining is designed and influences of process parameters to the material removal rate and edge chipping are studied. The experiment results show that machining ceramics by laser heating-assisted micro-detonation of striking arc machining can increase the material removal rate and improve the edge chipping. The machining efficiency increases with increment of laser power and decreases with the size growth of light spot. With the increase of distance, it rises in advance and then reduces. The edge chipping decreases with the increase of laser power, decreases before increases with the size growth of light spot or the increment of distance. The results provide evidences for studying machining mechanism and choosing proper process parameters of laser heating-assisted micro-detonation of striking arc.