薄壁构件渐进式电磁成形技术研究进展

With the dcvclopment of China's high-end manufacturing industries, the demands for thin-walled components in many industrial fields such as acrospacc were increased dramatically. The high-speed forming characteristics, traditional EMF was successfully applied to the produetion of thin-walled components of some key lightweight materials. However, due to the limitations of forming coil and discharge cquipment, it was difficult to process large-seale and complex strueture parts. In the past decade, incremental EMF technology was developed and gradually applied to the large thin-wall components processing, where a large number of research results were emerged. On the basis of brief-ly describing the principle and characteristics of EMF technology, the existing incremental EMF technology was divided into two categories aecording to the processing form: incremental electromagnetic composite forming and incremental electromagnetic direct forming. The research Status of each processes was expounded from the aspects of basic principle, technical scheme and application results. Thus the main problcms existing in the incremental EMF technology were analyzed, then the future development prospects and research direction of the incremental EMF technology were prospected.