scholarly journals A Study on the Electrode Wear in Electrical Discharge Machining. The 3rd Report. The Wear Ratio of Copper Electrode in the Machining of Carbon Steel.

1994 ◽  
Vol 28 (57) ◽  
pp. 11-20
Author(s):  
Masayuki SUZUKI ◽  
Naotake MOHRI ◽  
Nagao SAITO ◽  
Yoshiki TSUNEKAWA ◽  
Takahisa MASUZAWA
Keyword(s):  
Carbon Steel ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Copper Electrode ◽  
Electrode Wear ◽  
Wear Ratio

Deep Hole of AISI P20 Mold Steel Material by Electrical Discharge Machining

2014 ◽  
Vol 590 ◽  
pp. 244-248
Author(s):  
Jamkamon Kamonpong ◽  
Pichai Janmanee
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Side Surface ◽  
Copper Electrode ◽  
Electrode Wear ◽  
Steel Material ◽  
Suitable Parameter ◽  
Aisi P20 ◽  
Off Time

This research aimed to study the machining efficiency of AISI P20 steel by Electrical Discharge Machining (EDM) using rod copper electrode to machining material by 50 mm depth of machining was mainly assessed from Materials Removal Rate (MRR) and Electrode Wear Ratio (EWR). From the experiment designed to use Taguchi technique of data analysis and suitable parameter prediction, the highest MRR was at on-time of 150 μs, off-time of 2 μs and electric current level was at 15 A or 0.25 A/mm2. Predicted value was at 19.2395 mm3/min which was equal to real experiment, showing Materials Removal Rate of 19.647 mm3/min (with error of 2.12 percent) .Moreover, it was found that gap would increase with the size of electrode and depth of machining caused by movement of particles removed from side surface of electrode, which cause micro sparks at the side of the material workpiece.

Investigation of RC Type Electrical Discharge Machining on ASSAB 618 Steel Using Copper Electrode

2013 ◽  
Vol 315 ◽  
pp. 30-34
Author(s):  
Muhammad Zulhisham Ahmed Zaki ◽  
M. Azuddin
Keyword(s):  
Surface Finish ◽  
Electrical Discharge ◽  
Pulse Generator ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Copper Electrode ◽  
Energy Output ◽  
Electrode Wear ◽  
Discharge Energy ◽  
Rc Circuit

This paper presents the investigation on Electrical Discharge Machining (EDM) on ASSAB 618 steel using copper electrode. The sparking power was generated using Resistor Capacitor (RC) Circuit and not usual Transistor Pulse Generator Circuit. The performance of the electrodes in the EDM RC circuit was evaluated based on the achieved surface roughness with respect to material removal rate (MRR) and electrode wear ratio (EWR). In this study, investigations have been conducted with surface finish at different discharge energy output. It was found that the surface characteristics are dependent mostly on the discharge energy during machining. The fine finish electrical discharge machining requires minimization of the discharge energy supplied into the gap. In addition, the surface finish was found to be influenced greatly by the electrical and thermal properties of the electrode material.

Electrical Discharge Machining Characteristics of ECAP Copper Electrode

2019 ◽  
Vol 969 ◽  
pp. 738-743
Author(s):  
R. Gopal ◽  
K.R. Thangadurai ◽  
K. Thirunavukkarasu
Keyword(s):  
Equal Channel Angular Pressing ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Research Work ◽  
Copper Electrode ◽  
Machining Process ◽  
Electrode Wear ◽  
Angular Pressing ◽  
Machining Characteristics ◽  
Bare Copper

Enormous research work has done on the electrode wear in spark erosion machining such as hybrid electrical discharge machining process, introducing various methods such as ultrasonic vibration in electrode, rotating the electrode, developing new electrode material (alloys and composites) and surface coated electrode etc,. Equal Channel Angular pressing is one such technique which makes tool material harder through grain refinement and ultimately enhances the tool life. The work material is AISI H13. For this research work, two copper electrodes are prepared, out of which one copper electrode has undergone equal channel angular pressing process. The most influencing parameters of spark machining like current, pulse on time and pulses off time are chosen for this study. The experiments are conducted using bare copper electrode and equal channel angular pressed copper electrode based on the box Behnken approach. The observations are analyzed for the machining characteristics in terms of rate of machining, rate of tool erosion and surface coarseness. Finally, it is found that ECAP processed copper electrode has lesser wear rate and better surface finish than bare copper electrode.

Performance and Microstructure of TiN/Cu EDM Electrodes

2012 ◽  
Vol 268-270 ◽  
pp. 82-86
Author(s):  
Jing Jing Zhang ◽  
Kai Yong Jiang ◽  
Jie Yan ◽  
Fei Wang ◽  
Xiao Wei Wang
Keyword(s):  
Tool Wear ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Ceramic Materials ◽  
Copper Electrode ◽  
Wear Ratio ◽  
Tool Wear Ratio ◽  
Edm Electrodes ◽  
Commercial Copper ◽  
Different Content

This paper is to explore the feasibility of TiN/Cu-based composite materials as electrical discharge machining (EDM) electrodes.The tool wear ratio (TWR) of EDM electrode directly reflects the machining precision. To reduce the tool wear ratio(TWR) of Cu electrode in the EDM processing, Inorganic mixture of different content of ceramic materials TiN powder and Cu powder are prepared , then pressed and sintered into EDM electrodes.Experimental results show that: in the six batchs of experiments, the tool wear ratio (TWR) of 35%TiN/Cu electrode is the least, which is about 4.98%, much less than that of commercial copper electrode . The microstructures of the TiN/Cu electrodes after electrical discharge machining (EDM) as well are analyzed in this paper.

Recent Patents on Micro-EDM Milling

2020 ◽  
Vol 13 (3) ◽  
pp. 219-229
Author(s):  
Baocheng Xie ◽  
Jianguo Liu ◽  
Yongqiu Chen
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Three Dimensional ◽  
Processing Method ◽  
Electrode Wear ◽  
Micro Edm ◽  
Processing Efficiency ◽  
Processing Methods ◽  
Machining Quality ◽  
Micro Electrical Discharge Machining

Background: Micro-Electrical Discharge Machining (EDM) milling is widely used in the processing of complex cavities and micro-three-dimensional structures, which is a more effective processing method for micro-precision parts. Thus, more attention has been paid on the micro-EDM milling. Objective : To meet the increasing requirement of machining quality and machining efficiency of micro- EDM milling, the processing devices and processing methods of micro-EDM milling are being improved continuously. Methods: This paper reviews various current representative patents related to the processing devices and processing methods of micro-EDM milling. Results: Through summarizing a large number of patents about processing devices and processing methods of micro-EDM milling, the main problems of current development, such as the strategy of electrode wear compensation and the development trends of processing devices and processing methods of micro-EDM milling are discussed. Conclusion: The optimization of processing devices and processing methods of micro-EDM milling are conducive to solving the problems of processing efficiency and quality. More relevant patents will be invented in the future.

Sign in / Sign up

Export Citation Format

Share Document