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.

Impact Analysis of Electrode Material on Electrical Discharge Machining Polycrystalline Diamond Processing

2013 ◽  
Vol 441 ◽  
pp. 36-39
Author(s):  
Yun Hai Jia
Keyword(s):  
Surface Roughness ◽  
Layer Thickness ◽  
Electrode Material ◽  
Electrical Discharge ◽  
Electrode Materials ◽  
Cutting Tool ◽  
Electrical Discharge Machining ◽  
Surface Effect ◽  
Cutting Tools ◽  
Process Conditions

The electrode material plays a very important role in the electric discharge machining, affects the electrical discharge machining efficiency and machining surface quality. Experiment testing and materials analysis as the primary method, affect layer thickness and workpiece surface roughness value as evaluation indexes. PCD cutting tool samples were electrical discharge machined using copper electrodes and graphite electrodes respectively. After machining, the PCD cutting tool samples' surfaces were analyzed by X ray diffraction, the surfaces appearances were observed under the scanning electron microscope, and the surface roughness values were measured by roughness measuring instrument. PCD samples' surface effect layer thickness values and surface roughness values, affect layer distribution structure was statically analyzed in typical EDM process conditions with different electrode materials. Summary electrode material effect on PCD cutting tools in EDM processing. Provides an important experimental basis for designing technics of precision and highly efficient electrical discharge machining PCD cutting tools.

Effects of Machining Fluid on Electric Discharge Machining of SiC Ingot

2014 ◽  
Vol 778-780 ◽  
pp. 767-770 ◽  
Author(s):  
Norimasa Yamamoto ◽  
Satarou Yamaguchi ◽  
Tomohisa Kato
Keyword(s):  
Surface Roughness ◽  
Silicon Carbide ◽  
Ion Exchange ◽  
Electric Discharge ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Electric Discharge Machining ◽  
The Wire ◽  
Characteristic Features ◽  
First Time

Recently, ingots of silicon carbide have been adapted to be sliced by the wire-cut electrical discharge machining. Fast slicing, and the reduction in the loss are important for slicing of the wafer. In this paper, characteristic features of the electric discharge machining in the ion-exchange water and the fluorine-based fluid were compared for these improvement. The discharge was caused by a pulse voltage applied to a ingot of silicon carbide and the wire in machining fluid, and the slicing was proceeded. As a result, improvement of surface roughness and kerf loss was confirmed, for the first time. In addition, the improving methods for fast slicing were considered.

Effect of Process Parameters in Electric Discharge Machining of Ti-6Al–4V Alloy by Three Different Tool Electrode Materials

2012 ◽  
Vol 488-489 ◽  
pp. 876-880 ◽  
Author(s):  
Manoj Kumar Kuttuboina ◽  
A. Uthirapathi ◽  
Singaravelu D. Lenin
Keyword(s):  
Process Parameters ◽  
Electrode Material ◽  
Electrode Materials ◽  
Metal Removal ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Copper Electrode ◽  
Tool Electrode ◽  
Good Surface ◽  
Pulse On Time

The effect of process parameters namely peak current, pulse on time and flushing pressure on electrical discharge machining (EDM) of titanium alloy (Ti–6Al–4V) were investigated by using three different tool electrode materials namely copper, brass, and aluminium. Kerosene is used as dielectric. The process parameters for machining Ti6Al4V are varied at three levels by using Taguchi's orthogonal array table. The responses such as Metal Removal Rate (MRR), Tool Wear Rate (TWR), and Surface Roughness (SR) are measured and the most significant parameter was confirmed by ANOVA (Analysis Of Variance). The test result shows that copper electrode material possesses higher MRR, less TWR as compared to brass and aluminium. Brass and copper tools has good surface finish as compared with aluminium. The finest electrode material for machining of Ti6Al4V alpha beta alloy in EDM process was in the order of copper, brass and aluminium.

Thermal and Mechanical Influence of Ultrasonically Aided Electrical Discharge Machining on Co-Cr Alloys

2020 ◽  
Vol 1157 ◽  
pp. 93-107
Author(s):  
Bogdan Ionuț Cristea ◽  
Daniel Ghiculescu ◽  
Dumitru Mnerie
Keyword(s):  
Experimental Data ◽  
Electric Discharge ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Comsol Multiphysics ◽  
Removal Mechanism ◽  
Electric Discharge Machining ◽  
Mechanical Influence

The paper reviews machining of CoCr alloys by electric discharge machining and ultrasonic aided discharge machining. The removal mechanism is discussed, modeled with Comsol Multiphysics and validated using experimental data.

Machinability for C/SiC Composite Material by Electrical Discharge Machining

2018 ◽  
Vol 913 ◽  
pp. 536-541
Author(s):  
Yong Fu Zhang ◽  
Wei Wei Chen ◽  
Huan Wu Cheng ◽  
Yu Ping Zhang
Keyword(s):  
Composite Material ◽  
Simulation Model ◽  
Electrode Material ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Brittle Materials ◽  
Copper Electrode ◽  
Machining Efficiency ◽  
Hard And Brittle Materials ◽  
Different Diameters

A new method was adopted in this study to machine C/SiC composite. The machinability was studied by processing some shapes in the material in this way. Small deep holes were machined firstly to test whether the copper electrode was suitable enough to be adopted in the Electrical Discharge Machining. Then holes of different diameters were processed by two kinds of electrodes to study the more appropriate electrode material by comparing machining efficiency of two electrodes. Then complicated shapes were machined based on these conditions. Finally, a simulation model was built up to study the influence of the fluid on the electrode and the workpiece in the Fluent 6.3. According to the study, Electrical Discharge Machining Technology is suitable enough to machine the hard and brittle materials like C/SiC composite and the accuracy that the error should not exceed 0.5 mm can also be guaranteed well.

scholarly journals ANALISIS OPTIMASI KETELITIAN DIMENSI, KEKASARAN PERMUKAAN DAN LAJU KEAUSAN ELEKTRODE PADA PROSES ELECTRIC DISCHARGE MACHINING DENGAN METODE TAGUCHI MULTI RESPON

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Edy Sulistiyawan
Keyword(s):  
Electric Discharge ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Electric Discharge Machining ◽  
Time Pulse

Electrical Discharge Machining (EDM) adalah mesin non konvensi-onal yang bekerja berdasarkan terjadinya loncatan bunga api secara periodik dari elektrode ke benda kerja. Pada penelitian ini variabel-variabel bebas yang diteliti merupakan faktor-faktor yang dapat dikendalikan pada setting mesin yaitu arus, on-time pulse, dan tegangan, serta masing-masing variabel mempunyai tiga taraf pengamatan. Percobaan utama dilaksanakan dengan menggunakan rancangan OA L27. Analisis data dilakukan dengan pendekatan konvensional Taguchi untuk optimasi respon satu per satu dan aplikasi prosedur TOPSIS untuk memperoleh suatu standart setting yang dapat mengoptimumkan ketiga respon secara sekaligus. Hasil penelitian diperoleh bahwa respon kekasaran permukaan, laju keausan elektrode dan ketelitian dimensi dipengaruhi oleh faktor-faktor utama yaitu arus, on-time pulse, dan tegangan serta interaksi dua faktor yai tu antara arus dan tegangan. Kombinasi taraf faktor yang menghasilkan ketiga respon yang optimum adalah setting mesin dengan arus 3A, on-time pulse 100 dan tegangan 70 volt. Sedangkan estimasi harga kekasaran permukaan optimum yang diperoleh adalah sebesar 1.24 , dan interval kepercayaan 90% diperoleh range antara 1.17 sampai 1.33 . Untuk respon laju keausan elektrode diperoleh estimasi harga yang optimum sebesar 0.0096 mm3/dtk, dan dengan interval kepercayaan 90% diperoleh range antara 0.0078 mm3/dtk sampai 0.0018 mm3/dtk. Dan untuk respon keteli tian dimensi diperoleh estimasi harga yang optimum sebesar 0.0354mm, dan interval estimasi harga yang optimum sebesar 0.0354mm, dan interval kepercayaan 90% diperoleh range antara 0.0325mm sampai 0.0387mm.

Optimization of Processing Conditions on the Wire Electric Discharge Machining by the Parameters of Vibro-Acoustic Signal

2016 ◽  
Vol 876 ◽  
pp. 36-42 ◽  
Author(s):  
Sergey Nikolaevich Grigoriev ◽  
Mikhail Pavlovich Kozochkin ◽  
Artur Nikolaevich Porvatov
Keyword(s):  
Electric Discharge ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Pulsed Laser ◽  
Acoustic Signals ◽  
Processing Conditions ◽  
Electric Discharge Machining ◽  
Spark Erosion ◽  
Wire Electric Discharge Machining

The results of the research of vibro-acoustic signals, accompanying the processes of electrical discharge machining and pulsed laser treatment, are presented in this article. It is shown that the monitoring parameters of vibro-acoustic signals can improve the quality of management spark erosion equipment.

scholarly journals Machining and Surface Characteristics of AISI 304L After Electric Discharge Machining for Copper and Graphite Electrodes in Different Dielectric Liquids

2017 ◽  
Vol 7 (4) ◽  
pp. 1765-1770
Author(s):  
S. Anjum ◽  
M. Shah ◽  
N. A. Anjum ◽  
S. Mehmood ◽  
W. Anwar
Keyword(s):  
Electric Discharge ◽  
Electrode Material ◽  
Electrode Materials ◽  
Dielectric Liquid ◽  
Electric Discharge Machining ◽  
Graphite Electrodes ◽  
Aisi 304L ◽  
Dielectric Liquids ◽  
Morphological Studies ◽  
Thermal Conductivities

In Electric Discharge Machining (EDM), the thermal energy used for material erosion depends on the intensity of electric sparks, the thermal conductivities of electrode material and the dielectric liquid. In this paper, the effect of EDM on AISI 304L steel is studied using copper and graphite electrodes and distilled water and kerosene oil as dielectric liquids. Material Removal Rates (MRR), Tool Wear Rates (TWR) and surface conditions are calculated for four different combinations with the two electrode materials and the two dielectric liquids. These investigations are carried out at different pulse currents. Machined surfaces are evaluated by morphological studies, energy dispersive spectrographs (EDS) and white layer thickness using Scanning Electron Microscopy (SEM). It is found that a transfer of carbon takes place from the kerosene oil and the graphite electrodes into the machined surface which alters the metallurgical characteristics, depending on the electrical and thermal conductivities of the electrode material and the dielectric liquid.

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