Experimental Investigation on the Electrode Specific Performance in Micro-EDM of Die-Steel

2013 ◽  
Vol 28 (4) ◽  
pp. 390-396 ◽  
Author(s):  
A. Kadirvel ◽  
P. Hariharan ◽  
S. Gowri
Keyword(s):  
Experimental Investigation ◽  
Micro Edm ◽  
Die Steel ◽  
Specific Performance

EXPERIMENTAL INVESTIGATION OF MICRO-EDM OPERATION IN INCONEL 718

2021 ◽  
pp. 2150102
Author(s):  
MAYANK CHOUBEY ◽  
K. P. MAITY
Keyword(s):  
Experimental Investigation ◽  
Inconel 718 ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Micro Edm ◽  
Machining Processes ◽  
Machining Time ◽  
Machine Material ◽  
Micro Holes ◽  
Unconventional Machining

The increasing trends towards miniaturized and lightweight components for various engineering and aerospace applications by unconventional machining the demand for micro-electrical discharge machining (EDM) have become increasingly wide. Micro-EDM is one of the most promising unconventional machining processes as compared to other unconventional machining due to its lower cost, ease of operation, and accuracy. This research explores the experimental investigation of micro-EDM operation on hard and difficult to machine material Inconel 718. The micro-holes were fabricated on an Inconel 718 workpiece with a copper electrode. The influence of input process parameters on material removal rate (MRR), machining time, and quality of the fabricated micro-holes were studied. Overcut and taperness of the fabricated micro-sized through holes were measured to address the accuracy of the fabricated micro-holes in micro-EDM operation. Experimental results reveal that the increase in current and voltage increases the MRR, and reduced machining time but at the cost of dimensional accuracy of the fabricated holes. The high value of current and voltage resulted in poor surface quality. The optimum machining condition that gives higher MRR with higher machining precision was obtained by experimenting while machining Inconel 718.

scholarly journals Experimental investigation and numerical simulation of micro-EDM of bulk metallic glass with focus on crater sizes

2019 ◽  
Vol 34 ◽  
pp. 275-286 ◽  
Author(s):  
Chong Liu ◽  
Nick Duong ◽  
Muhammad P. Jahan ◽  
Jianfeng Ma ◽  
Roan Kirwin
Keyword(s):  
Numerical Simulation ◽  
Experimental Investigation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Micro Edm

Material Removal Rate of Zirconia in Electro Discharge Micromachining

2015 ◽  
Vol 1115 ◽  
pp. 20-23
Author(s):  
Banu Asfana ◽  
Mohammad Yeakub Ali ◽  
Abdul Rahman Mohamed ◽  
Wayne N.P. Hung
Keyword(s):  
Experimental Investigation ◽  
Material Removal Rate ◽  
Empirical Model ◽  
Rotational Speed ◽  
Material Removal ◽  
Removal Rate ◽  
Micro Edm ◽  
Tungsten Electrode ◽  
Design Expert ◽  
Optimum Parameters

This paper investigates the material removal rate (MRR) in electro discharge micromachining (micro-EDM) of zirconia. Experimental investigation is carried out with 800 μm diameter tungsten electrode with two varying parameters rotational speed and gap voltage. The MRR data are analyzed and an empirical model is developed using Design Expert software. The optimum parameters for maximum MRR are found to be 375 rpm rotational speed and 80 V gap voltage.

A Study on the Die-Sinking Micro-Electrical Discharge Machining of EN-24 Die Steel Using Various Electrode Materials

2014 ◽  
Vol 984-985 ◽  
pp. 73-82 ◽  
Author(s):  
A. Kadirvel ◽  
P. Hariharan ◽  
M. Mudhukrishnan
Keyword(s):  
Surface Roughness ◽  
Electrode Materials ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Copper Electrode ◽  
Machining Process ◽  
Micro Edm ◽  
Processing Efficiency ◽  
Die Steel ◽  
Micro Holes

Micro-EDM is an extensively used machining process for the fabrication of micro-holes with various advantages resulting from its characteristics of non-contact and thermal process. In this micro-fabrication technique, processing parameters greatly affect processing efficiency and stability. An experimental investigation on die-sinking Micro-EDM of EN-24 die steel using various electrodes such as tungsten, copper, copper tungsten and silver tungsten has been carried out. The present study aims to assess the quality and accuracy of the produced micro-holes, machining stability, material removal rate (MRR), tool wear ratio (TWR), surface roughness (Ra), Heat affected zone (HAZ) and overcut (OC). In addition, the influence of gap voltage, capacitance and discharge energy on the performance of the process has also been investigated. Experimental results proved that the overall performance of the copper electrode is found to be optimum with high MRR, thin HAZ though copper shows higher TWR, surface roughness and overcut.

Study on Influence of Stray Inductance in Micro EDM Using Electrostatic Induction Feeding Method

2010 ◽  
Vol 447-448 ◽  
pp. 263-267 ◽  
Author(s):  
Xiao Dong Yang ◽  
Yong Wan ◽  
Fu Qiang Hu
Keyword(s):  
Experimental Investigation ◽  
Pulse Generator ◽  
Negative Influence ◽  
Discharge Circuit ◽  
Tool Electrode ◽  
Micro Edm ◽  
Discharge Energy ◽  
Stray Capacitance ◽  
Feeding Method ◽  
Electrostatic Induction

In the micro EDM method by electrostatic induction feeding, a pulse generator is coupled to the tool electrode by a capacitor, since the negative influence of the stray capacitance in the circuit can be eliminated, and the discharge energy per pulse can be minimized, thereby realizing discharge craters of nanometer order. However, there is still the stray inductance in the discharge circuit, other than the stray capacitance. In this study, in order to examine the influence of the stray inductance, experimental investigation was conducted.

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