Analysis of Wire-EDM Input Parameters on Kerf Width and Surface Integrity for Al 6061 Alloy

2018 ◽  
pp. 35-41
Author(s):  
K. Mandal ◽  
S. Sarkar ◽  
S. Mitra ◽  
D. Bose
Keyword(s):  
Surface Integrity ◽  
Kerf Width ◽  
Wire Edm ◽  
Al 6061 ◽  
Input Parameters

A novel approach of GEF and GA for the optimization of multi-objective wire EDM process during the machining of DC53 super alloy

2021 ◽  
pp. 095440892199291
Author(s):  
Satish Kumar ◽  
Arun Kumar Gupta ◽  
Pankaj Chandna ◽  
Gian Bhushan ◽  
Anish Kumar
Keyword(s):  
Surface Finish ◽  
Kerf Width ◽  
Physical Contact ◽  
Wire Edm ◽  
Multi Objective ◽  
Input Parameters ◽  
The Wire ◽  
Grey Relational ◽  
Pulse On Time ◽  
Single Objective

In components manufacturing, the Wire EDM is more popular due to its outstanding features of high dimensional accuracy, lower cost of production and good surface finish as there is no physical contact between the wire and work piece. However, for the steel with higher hardness, it is difficult to obtain these features up to the required extent. Moreover, with the help of optimum process parameters selection the WEDM performance characteristics should be improved. The most commonly studied responses for this process are material removal rate (MRR), Surface finish, Kerf width, wire consumption, roundness error. Among these, the responses like Kerf width, MRR and surface roughness are the primary responses. It is observed that pulse on time, pulse off time, servo voltage, peak current and wire feed are the influencing input parameters to these primary responses. Therefore, in the present work, the optimal level of input parameters is estimated for these responses using the Grey-Entropy-Fuzzy (GEF) and Genetic Algorithm (GA) during wire EDM of steel grade DC53 with high hardness of HRC58normally used in stamping dies, injection moulding and compression Moulding etc. To convert the multi objective problem into a single objective, the grey relational coefficient (GRC) has been calculated using Grey Relational Analysis and the weight-age of each response is approximated during the entropy method. To estimate the relation among the input parameters and single objective (GRC) fuzzy mathematical modelling technique termed as GEF has been applied. The optimal performance has been calculated using GA and GEF model is considered as fitness function. Five conformational tests on optimum parameter combination suggested by GA has been performed. The predicted values and experimental values have been found to be in good agreement with a standard error of 3.31% hence the prediction performance of the GREG-Fuzzy is quite satisfactory.

Challenge to Development of Functional Multi-Wire EDM Slicing Method Using Wire Electrode with Track-Shaped Section

2012 ◽  
Vol 523-524 ◽  
pp. 287-292 ◽  
Author(s):  
Yasuhiro Okamoto ◽  
Yasuaki Kimura ◽  
Akira Okada ◽  
Yoshiyuki Uno ◽  
Jun Ohya ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
High Performance ◽  
Kerf Width ◽  
Working Environment ◽  
Wire Electrode ◽  
Wire Edm ◽  
Wafer Thickness ◽  
Wire Saw ◽  
Slicing Method ◽  
Shaped Section

Brittle materials, such as silicon, silicon carbide and sapphire have been conventionally sliced for wafers by a multi-wire saw method with slurry in industrial fields. Recently, the multi-wire saw method with a fixed diamond abrasive wire has been available as a commercial product at acceptable cost, and the high slicing performance is expected compared with the normal multi-wire saw method with slurry. However, there still remain some problems such as bad working environment with abrasives, cleaning cost of sliced wafers, crack generation on the sliced surface and a large kerf loss against a wafer thickness. On the other hand, the developed multi-wire EDM slicing method would accomplish the high performance slicing of silicon and silicon carbide with a narrow kerf width under a clean process environment. However, the thinner wire is challenging process with a normal round shape wire electrode. Therefore, the new wire electrode with track-shaped section was proposed in order to satisfy both the narrow kerf width and the high wire tension even in the case of thin wire electrode. In this study, the running control of wire electrode with a track-shaped section was experimentally investigated, and the possibility of proposed process was discussed.

scholarly journals Surface Integrity Analysis of Ceramics Machined by Wire EDM Using Different Trim Cut Technologies

Procedia CIRP ◽  
2020 ◽  
Vol 87 ◽  
pp. 251-256 ◽  
Author(s):  
T. Bergs ◽  
M. Olivier ◽  
A. Gommeringer ◽  
F. Kern ◽  
A. Klink
Keyword(s):  
Surface Integrity ◽  
Wire Edm ◽  
Trim Cut ◽  
Integrity Analysis

scholarly journals Surface Integrity Characteristics in Wire-EDM of Inconel 718 at Different Discharge Energy

Procedia CIRP ◽  
2013 ◽  
Vol 6 ◽  
pp. 220-225 ◽  
Author(s):  
L. Li ◽  
Y.B. Guo ◽  
X.T. Wei ◽  
W. Li
Keyword(s):  
Surface Integrity ◽  
Inconel 718 ◽  
Wire Edm ◽  
Discharge Energy

Study on Kerf Width in Wire-EDM Based on Taguchi Method

2011 ◽  
Vol 110-116 ◽  
pp. 1808-1816 ◽  
Author(s):  
Kumar Swain Abinash ◽  
Ray Siddhartha ◽  
Nirmal Kumar Mandal
Keyword(s):  
Taguchi Method ◽  
Tungsten Carbide ◽  
Electrical Discharge Machining ◽  
Cutting Parameters ◽  
Kerf Width ◽  
Machining Parameters ◽  
Wire Edm ◽  
Machining Performance ◽  
Off Time ◽  
Significant Factors

— This paper presents an experimental investigation on the influence of cutting parameters of wire cut Electrical Discharge Machining (Wire-EDM) during the machining of tungsten carbide and optimization of machining parameters on kerf width. The investigation was conducted by considering the varying parameter of average machining voltage, spark on time, spark off time, and capacitance with Taguchi method as optimizing technique. L9orthogonal array has been used to determine the S/N ratio, analysis of variance and ‘F’ test values for indicating most significant parameter affecting the machining performance. The significant factors average machining voltage for kerf width. Spark on time, spark off time and capacitance are obtained as insignificant parameters. Further verification of improvements in the quality characteristics has been made through conformation test to the chosen initial parameter setting. The optimal combination of WEDM parameters satisfies the real requirement of quality machining of tungsten carbide.

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