Experimental investigation of wear resistance of copper coated electrode-tool during electrical discharge machining

7th International Conference for Young Scientists "High Technology: Research and Applications"

工业技术（总论）

Ablyaz, T.^1 ; Muratov, K.^1 ; Preetkanwal, S.B.^2 ; Sarabjeet, S.S.^2

Perm National Research Polytechnic University, Perm-614000, Russia^1

Mechanical Engineering Department, Beant College of Engineering and Technology, Gurdaspur-143521, India^2

关键词: Current intensity;    Economic efficiency;    Electrical discharge machining;    Erosion resistant coatings;    Experimental investigations;    Galvanic deposition;    Processing capacities;    Utilization rates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/510/1/012001/pdf
DOI  :  10.1088/1757-899X/510/1/012001

学科分类：工业工程学

来源: IOP

【 摘 要 】

In this study, electrode-tools with excellent electrical and thermal properties were manufactured for use in die-sinker Electrical Discharge Machining. The most common materials, nowadays, for the manufacture of electrode tools are copper and graphite. The traditional method of obtaining complex profile electrodes tools is multi-axis metal cutting blade processing. The low utilization rate of the tool material during the shaping of complex-profile electrodes significantly affects the cost of a suitable product. The paper proposed a method of fabricating electrodes obtained by casting methods with the subsequent application of electro-erosion resistant coatings. The study of the investigating the durability of the coated electrode during the processing of 34CrNiMo6 steel has been carried out. It has been established that to obtain a uniform copper coating with a thickness of 300 μm, it is necessary to use a current density in the course of galvanic deposition of 1.3 A / mm2 at an exposure of 5 hours. An experimental study of the durability of the coating during the die-sinker Electrical Discharge Machining of 34CrNiMo6 steel showed that with an increase in the current intensity above 8A, the copper coating burns out. Based on the research, it was found that the processing of 34CrNiMo6 steel with electrode having copper coating on aluminum alloy AK12 as a base metal showcased superior processing capacity. The economic efficiency of using coated electrodes was enhanced by 35% as compared to the technology for obtaining a tool from a solid copper billet.