scholarly journals Prediction of the Geometrical Accuracy of the Machined Surface of the Tool Steel EN X30WCrV9-3 after Electrical Discharge Machining with CuZn37 Wire Electrode

Metals ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 462 ◽  
Author(s):  
Ľuboslav Straka ◽  
Ivan Čorný ◽  
Ján Piteľ
Keyword(s):  
Tool Steel ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Wire Electrode ◽  
Machined Surface ◽  
Geometrical Accuracy

A Study of the Mechanism of Electrical Discharge Machining of Particle Reinforced Metal Matrix Composites with Concavo-Convex Electrode

2011 ◽  
Vol 480-481 ◽  
pp. 300-305
Author(s):  
Jiang Wen Liu ◽  
T.M. Yue ◽  
Zhong Ning Guo ◽  
Z. Y. Wan ◽  
G.Y. Liu
Keyword(s):  
Metal Matrix ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Processing Condition ◽  
Matrix Composites ◽  
Wire Electrode ◽  
Machined Surface ◽  
Particulate Reinforced ◽  
Stable Processing ◽  
Processing Mechanism

A new concavo-convex electrode has been designed and employed. And an analysis of the electrical discharge machining (EDM) mechanism of a particulate reinforced metal matrix composite with this new electrode was conducted in this study. It was found that EDM with this new electrode can accelerate the debris discharge during machining so that it has a higher MRR compared to the case where a normal electrode was employed. Moreover, by studying the surface craters, it could confirm that discharge craters tend to connect together for the normal electrode. This indicates an abnormal arcing condition. Thus, the wire electrode was easy to be broken. While for the new electrode, separated craters were observed on the machined surface. This means a stable processing condition. The experiment results reveal the processing mechanism of EDM electrical discharge machining of MMCs by employing this new electrode.

Gas-Liquid Combined Multiple Cut in High-Speed WEDM

2010 ◽  
Vol 97-101 ◽  
pp. 4168-4171
Author(s):  
Tong Wang ◽  
Yu Mei Lu ◽  
Xian Chong Lu ◽  
Sun Fei Wang ◽  
Jing Zhe
Keyword(s):  
Surface Roughness ◽  
Electrical Discharge ◽  
High Speed ◽  
Electrical Discharge Machining ◽  
Wire Electrode ◽  
Machined Surface ◽  
Machined Surface Quality ◽  
New Process ◽  
Dry And Wet Conditions ◽  
Discharge Gap

This paper investigates a new process of wire electrical discharge machining (WEDM) as gas-liquid combined multiple cut. High-speed WEDM (HS-WEDM) finishing was compared in atmosphere and emulsion. Dry finishing has shorter discharge gap, better straightness and surface roughness and much higher material MRR than that in emulsion. Influences of wire winding speed and no load worktable feed on machined surface quality in dry and wet conditions were discussed. The better straightness obtained in gas is explained by analyzing forces acting on wire electrode. When first cut and second cut were performed both in emulsion liquid, and third cut was done in atmosphere, the surface roughness is improved compared with conventional WEDM.

Effects of Graphite and Boron Carbide Powders Mixed into Dielectric Fluid on Electrical Discharge Machining of SKD 11 Tool Steel

2021 ◽  
Author(s):  
Niwat Mookam ◽  
Piyawan Sunasuan ◽  
Tavee Madsa ◽  
Phisith Muangnoy ◽  
Suppawat Chuvaree
Keyword(s):  
Boron Carbide ◽  
Tool Steel ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Dielectric Fluid

Experimental investigations of wire lag phenomena on wire electrical discharge machining of M2 tool steel

2021 ◽  
Author(s):  
Mukandar Sekh ◽  
Ziyauddin Seikh ◽  
Souren Mitra ◽  
Soumya Sarkar ◽  
Bijoy Bhattacharyya
Keyword(s):  
Tool Steel ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Experimental Investigations ◽  
Wire Electrical Discharge Machining

Ti-6Al-4V Surfaces in SiC Powder Mixed Electrical Discharge Machining

2013 ◽  
Vol 856 ◽  
pp. 226-230 ◽  
Author(s):  
Hamidullah Yaşar ◽  
Bülent Ekmekci
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Dielectric Liquid ◽  
Operational Parameters ◽  
Electrical Parameters ◽  
Machined Surface ◽  
Optical Scanning ◽  
Surface Topographies ◽  
Powder Suspension

The role of suspended particles on Ti-6Al-4V surface in Powder Mixed Electrical Discharge Machining (PMEDM) is studied using SiC powder mixing in water dielectric liquid. Surface modifications due to the additives in dielectric liquid are investigated by means of optical, scanning electron microscopy and energy dispersive spectroscopy. The attachment of added powders and surface topographies interrelated with powder suspension concentration, particle size and electrical parameters such as pulse on duration and current. The influence on discharge transitivity with respect to SiC additives is noticed with pock like features on the surface. The geometry and size of these features indicated a robust dependency with respect to operational parameters and indicated the role of secondary discharges during PMEDM. SiC particles severely transferred from di-electric liquid to machined surface at critical operational parameters and implied that the process could be also used as a surface alloying technique.

scholarly journals Influence of Energy Parameters of Micro WEDM on Kerf

2012 ◽  
Vol 576 ◽  
pp. 527-530
Author(s):  
Mohammad Yeakub Ali ◽  
W.Y.H. Liew ◽  
S.A. Gure ◽  
B. Asfana
Keyword(s):  
Experimental Data ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Kerf Width ◽  
Wire Electrical Discharge Machining ◽  
Machining Parameters ◽  
Wire Electrode ◽  
Wire Vibration ◽  
The Wire ◽  
Micro Wedm

This paper presents the estimation of kerf width in micro wire electrical discharge machining (micro WEDM) in terms of machining parameters of capacitance and gap voltage. An empirical model is developed by the analysis of variance (ANOVA) of experimental data. Using a wire electrode of 70 µm diameter, a minimum kerf width is found to be 92 µm for the micro WEDM parameters of 0.01 µF capacitance and 90.25 V gap voltage. Around 30% increament of the kerf is found to be high. The analysis also revealed that the capacitance is more influential parameter than gap voltage on kerf width produced by micro WEDM. As the gap voltage determines the breakdown distance and affects the wire vibration, the wire vibration factor is to be considered in the analysis and in formulation of model in future study.

scholarly journals Electrical Discharge Machining for Glass with Wire Electrode

1974 ◽  
Vol 8 (15) ◽  
pp. 1-9
Author(s):  
Tadahiko WATANABE ◽  
Kazuo KOBAYASHI ◽  
Yunosuke TOKUHIRO ◽  
Masatoshi TAKEUCHI
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Wire Electrode

scholarly journals Wire Electrical Discharge Machining—A Review

Machines ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 69
Author(s):  
Laurenţiu Slătineanu ◽  
Oana Dodun ◽  
Margareta Coteaţă ◽  
Gheorghe Nagîţ ◽  
Irina Beşliu Băncescu ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Machining Process ◽  
Wire Electrical Discharge Machining ◽  
Wire Electrode ◽  
Machining Processes ◽  
Scientific Papers ◽  
The Wire ◽  
Machining Productivity ◽  
Machined Surfaces

Wire electrical discharge machining has appeared mainly in response to the need for detachment with sufficiently high accuracy of parts of plate-type workpieces. The improvements introduced later allowed the extension of this machining technology to obtain more complex ruled surfaces with increasingly high requirements regarding the quality of the machined surfaces and the productivity of the wire electrical discharge machining process. Therefore, it was normal for researchers to be interested in developing more and more in-depth investigations into the various aspects of wire electrical discharge machining. These studies focused first on improving the machining equipment, wire electrodes, and the devices used to position the clamping of a wire electrode and workpiece. A second objective pursued was determining the most suitable conditions for developing the machining process for certain proper situations. As output parameters, the machining productivity, the accuracy, and roughness of the machined surfaces, the wear of the wire electrode, and the changes generated in the surface layer obtained by machining were taken into account. There is a large number of scientific papers that have addressed issues related to wire electrical discharge machining. The authors aimed to reveal the aspects that characterize the process, phenomena, performances, and evolution trends specific to the wire electrical discharge machining processes, as they result from scientific works published mainly in the last two decades.

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