Machining of AISI D2 Tool Steel with Multiple Hole Electrodes by EDM Process

International Conference on Recent Advances in Materials, Mechanical and Civil Engineering

材料科学;机械制造;土木建筑工程

Prathipati, R Prasad^1 ; Devuri, Venkateswarlu^2 ; Cheepu, Muralimohan^3 ; Gudimetla, Kondaiah^4 ; Kiran, R Uzwal^5

Department of Mechanical Engineering, Universal College of Engineering and Technology, Andhra Pradesh

522005, India^1

Department of Mechanical Engineering, Marri Laxman Reddy Institute of Technology and Management, Telangana

500043, India^2

Department of Mechatronics Engineering, Kyungsung University, Busan

48434, Korea, Republic of^3

Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli

Tamil Nadu

620015, India^4

Department of Mechanical Engineering, CMR Institute of Technology, Telangana

501401, India^5

关键词: Conventional machining;    Dimensional precision;    Efficient machining;    Electrical discharge machining;    Electrical discharge machining process;    Machining Process;    Nonconventional machining;    Optimum selection;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/330/1/012067/pdf
DOI  :  10.1088/1757-899X/330/1/012067

来源: IOP

【 摘 要 】

In recent years, with the increasing of technology the demand for machining processes is increasing for the newly developed materials. The conventional machining processes are not adequate to meet the accuracy of the machining of these materials. The non-conventional machining processes of electrical discharge machining is one of the most efficient machining processes is being widely used to machining of high accuracy products of various industries. The optimum selection of process parameters is very important in machining processes as that of an electrical discharge machining as they determine surface quality and dimensional precision of the obtained parts, even though time consumption rate is higher for machining of large dimension features. In this work, D2 high carbon and chromium tool steel has been machined using electrical discharge machining with the multiple hole electrode technique. The D2 steel has several applications such as forming dies, extrusion dies and thread rolling. But the machining of this tool steel is very hard because of it shard alloyed elements of V, Cr and Mo which enhance its strength and wear properties. However, the machining is possible by using electrical discharge machining process and the present study implemented a new technique to reduce the machining time using a multiple hole copper electrode. In this technique, while machining with multiple holes electrode, fin like projections are obtained, which can be removed easily by chipping. Then the finishing is done by using solid electrode. The machining time is reduced to around 50% while using multiple hole electrode technique for electrical discharge machining.