Particle strengthening of the surface of copper electrode for electrical discharge machining

2008 ◽  
Vol 31 (1) ◽  
pp. 81 ◽  
Author(s):  
D.M. Guo ◽  
M. Zhang ◽  
Z.J. Jin ◽  
B.X. Zuo
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Copper Electrode ◽  
Particle Strengthening

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.

Multi Response Optimization of Electrical Discharge Machining Process Parameters Using Sintered Copper Electrode

2012 ◽  
Vol 622-623 ◽  
pp. 19-24
Author(s):  
P. Balasubramanian ◽  
Thiyagarajan Senthilvelan
Keyword(s):  
Process Parameters ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Copper Electrode ◽  
Machining Process ◽  
Sintered Copper ◽  
Response Optimization ◽  
Electric Pressure ◽  
Pulse On Time

In this study, input parameters of Electrical Discharge machining (EDM) process have been optimised for two different materials EN-8 and Die steel-D3 were machined by using sintered copper electrode. Analysis of variance (ANOVA) was applied to study the influences of process parameters viz: - peak current, pulse on time, di-electric pressure and diameter of electrode on material removal rate (MRR), tool wear rate (TWR) and surface roughness (SR) for both materials. Response surface methodology (RSM) has been applied to optimise the multi responses in order to get maximum MRR, minimum TWR and minimum SR. Furthermore, mathematical model has been formulated to estimate the corresponding output responses for both work pieces. It has been observed that compared to EN 8 material, the MRR value is low and TWR is high for D3 material. However the SR value is marginally lower than obtained in EN8.R2 value is above 0.90 for both work pieces.

Electrode Material Effect on Electrical Discharge Machining PcBN Cutting Tool Processing

2011 ◽  
Vol 399-401 ◽  
pp. 1667-1671 ◽  
Author(s):  
Yun Hai Jia
Keyword(s):  
Surface Quality ◽  
Electric Discharge ◽  
Electrode Material ◽  
Electrical Discharge ◽  
Electrode Materials ◽  
Cutting Tool ◽  
Electrical Discharge Machining ◽  
Copper Electrode ◽  
Electric Discharge Machining ◽  
Tool Surface

The electrode material is playing the very important role in the electrical discharge machining. Two kinds of electrode materials common used in EDM are compared and analyses similarities and differences in structure and physical characteristics. Combined with PcBN tool machining tests, from the electric discharge machining efficiency, electrode wear, tool surface quality, tool surface degenerating layer, machining results are in analysis and comparison, and then different electrode materials machining technics in electrical discharge machining process are summarized. Through the cutting tool electric discharge machining experiments, we can know that the graphite electrode easy to take shape, suits in the complex edge's cutting tool electric discharge machining, under the same electric discharge machining parameter condition, its processing efficiency must be higher than the copper electrode, but the electrode loses, the cutting tool surface quality and affect layer thickness are to be worse than the copper electrode.

scholarly journals Comparative Study on EDM of Ti-6Al-4V Using Circular and Convex Shaped Electrodes

2018 ◽  
Vol 7 (3.34) ◽  
pp. 256
Author(s):  
S Rajamanickam ◽  
R Palani ◽  
V Sathyamoorthy ◽  
Muppala Jagadeesh Varma ◽  
Shaik Shaik Mahammad Althaf ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Industrial Applications ◽  
Copper Electrode ◽  
Machining Process ◽  
Project Work ◽  
Machining Parameters ◽  
Pulse On Time ◽  
Pulse Off Time

As on today, Electrical Discharge Machining (EDM) is world famous unconventional machining process for electrically conductive materials. In this project work, Ti-6Al-4V is performed in electrical discharge machining using differently shaped (circular and convex) copper electrode. The machining parameters considered are the pulse on- time, pulse off-time, voltage and current to investigate machining characteristics like material removal rate and tool wear rate. Taguchi method is applied to frame experimental design. Ti-6Al-4V finds wide usage in industrial applications such as marine, aerospace, bio-medical and so on. 

An Investigation of the Influences of EDM Parameters and Tool Geometries on Radial Overcut for Monel 400 Material with Tungsten Copper Electrode

2015 ◽  
Vol 766-767 ◽  
pp. 908-913
Author(s):  
P. Padmini ◽  
S. Senthamilperarasu ◽  
B. Shanmuganathan ◽  
N.R.R. Anbusagar ◽  
P. Sengottuvel
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Dimensional Accuracy ◽  
Copper Electrode ◽  
Machining Process ◽  
Experimental Result ◽  
Machining Parameters ◽  
Radial Overcut ◽  
Monel 400 ◽  
Pulse On Time

Electrical-discharge Machining (EDM) is a nonconventional machining process utilizing an electric spark discharge from the electrode (-) towards the work piece (+) through the dielectric fluid. The Dimensional accuracy in this is very important consideration for the accuracy of the finished product. The objective of this experimental study is to determine parameters that offer the best dimensional accuracy in electrical discharge machining (EDM). Discharge current (A), Pulse On Time (Ton), Pulse Off Time (Toff ) and Circle,Rectangle,Triangle and Square Tool Geometrical Shapes (Geo) are taken as machining parameters. The experimental investigations are carried out on Monel 400 material using Tungsten copper electrode. The response of ROC is considered for improving the machining efficiency. Optimal combination of parameters was obtained Taguchi Optimization technique. The confirmation experiments results shows that the significant improvement in Radial Overcut was obtained. ANOVA have been used to analyze the contribution of individual parameters on ROC. The experimental result demonstrates that the Taguchi method satisfies the practical requirements

scholarly journals Electrical Discharge Machining of Polycrystalline Diamond Using Copper Electrode - Finishing Condition

2017 ◽  
Vol 203 ◽  
pp. 012019 ◽  
Author(s):  
M.A. Haikal Ahmad ◽  
M. Zulafif Rahim ◽  
M. F. Mohd Fauzi ◽  
N. Hafizah Azis ◽  
A.E Ismail ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Polycrystalline Diamond ◽  
Copper Electrode

A Study of Machining Parameters during Electrical Discharge Machining of Steel by a Rotary Copper Electrode

2009 ◽  
Vol 83-86 ◽  
pp. 756-763 ◽  
Author(s):  
P.S. Satsangi ◽  
K.D. Chattopadhyay
Keyword(s):  
Surface Finish ◽  
Electrical Discharge ◽  
Metal Removal ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Copper Electrode ◽  
Machining Parameters ◽  
Electrical Parameters ◽  
Peak Current ◽  
Machining Characteristics

The use of thermo-electric source of energy, as in electrical discharge machining (EDM), has greatly helped in machining all types of electrically conductive materials being used in different industrial applications. The present work investigates the different machining characteristics during electrical discharge machining on EN-8 steel with a rotary copper electrode. The effects of three independent machining parameters viz. peak current, pulse on time and rotational speed of tool electrode are chosen as variables for evaluating the output parameters such as metal removal rate, surface finish of work piece. The research focuses on developing empirical models for prediction of metal removal rate and surface finish during rotary electrical discharge machining process with the help of input parameters. The models are developed using linear regression analysis by applying logarithmic data transformation of non-linear equation. Analysis of results using partial and multiple correlation analysis reveals that electrical parameters have more significant effect than the non-electrical parameters on the machining characteristics during electrical discharge machining by a rotary electrode. Furthermore, when high MRR is criterion, high peak current and low RPM with low pulse duration produces better output; whereas, and when smooth surface finish is criterion, low peak current and low RPM with high pulse duration produces better output. In addition, the predictions based on the above developed models are verified with extra experiments and are found to be in good agreement with the experimental verifications.

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