To improve the electrical discharge machining (EDM) ablation efficiency of superalloy Inconel718 and enhance the post-ablation surface quality of the superalloy, the multi-channel discharge ablation milling experiments with Inconel718 were performed using a new method of multi-channel discharge ablation. The results show that the number of discharge channels was random in the multi-channel discharge ablation process. In a pulse discharge cycle, with an increase in discharge channels, the voltage waveform decreased stepwise while the current waveform rose stepwise. Compared with EDM ablation, the material removal rate (MRR) of Inconel718 with multi-channel discharge ablation increased by 73.7%, as the total loop current of multi-channel discharge ablation increased. In addition, as the multi-channel discharge dispersed the discharge energy, the surface roughness of the workpiece decreased by 14.6%, surface micro-cracks decreased, and recast layer thickness decreased.
基金资助:国家自然科学基金 (51675272)。
引用本文:
傅炯波,邱明波. Inconel718多通道放电烧蚀铣削加工技术研究[J]. 航空制造技术, 2019, 62(12): 97-101.
FU Jiongbo, QIU Mingbo. Study on Multi-Channel Discharge Ablation Milling Processing of Inconel718. Aeronautical Manufacturing Technology, 2019, 62(12): 97-101.