Research on Surface Modification Technique by EDM
This paper describes a new method of die surface modification by ordinary Electrical Discharge Machining (EDM) tool. First, the principle of this method is studied. Secondly, the technology and characteristics of the die steel coating are discussed in detail based on lots of experiments, and the results show that the die steel characteristics are improved evidently by using EDM. At last, the technology is applied to the punch die initially, and it can be drawn that the life of the coated punch die is improved evidently compared with the non-coated punch die through the punching test.
Zhengyi Jiang, Xianghua Liu and Jinglong Bu
X. H. Li et al., "Research on Surface Modification Technique by EDM", Advanced Materials Research, Vols. 154-155, pp. 1193-1198, 2011