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.

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.

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.

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.

Analyzing and Counter Plan Researches on Technical Index of Wire Electric Discharge Machining Based on the Surface Quality Issues

2010 ◽  
Vol 148-149 ◽  
pp. 943-948
Author(s):  
Jin Chun Feng ◽  
Xian Wen Wu ◽  
Deng Wan Li
Keyword(s):  
Surface Quality ◽  
Electric Discharge ◽  
Electric Discharge Machining ◽  
Wire Electric Discharge Machining ◽  
Quality Issues ◽  
Quality Of Part

In this paper, the writers analyze some issues that influence parts surface quality on HS- WEDM and its related counter plan, which are Summed up from practice and producing experiences. It has certain guiding significant to improve surface quality of part in practice production.

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 and Prediction of Machining Responses Using Response Surface Methodology and Adaptive Neural Network by Wire Electric Discharge Machining of Alloy-X

2021 ◽  
Vol 1026 ◽  
pp. 28-38
Author(s):  
I. Vishal Manoj ◽  
S. Narendranath ◽  
Alokesh Pramanik
Keyword(s):  
Neural Network ◽  
Surface Roughness ◽  
Artificial Neural Network ◽  
Response Surface ◽  
Electric Discharge ◽  
Cutting Speed ◽  
Electric Discharge Machining ◽  
Surface Method ◽  
Wire Electric Discharge Machining ◽  
Pulse On Time

Wire electric discharge machining non-contact machining process based on spark erosion technique. It can machine difficult-to-cut materials with excellent precision. In this paper Alloy-X, a nickel-based superalloy was machined at different machining parameters. Input parameters like pulse on time, pulse off time, servo voltage and wire feed were employed for the machining. Response parameters like cutting speed and surface roughness were analyzed from the L25 orthogonal experiments. It was noted that the pulse on time and servo voltage were the most influential parameters. Both cutting speed and surface roughness increased on increase in pulse on time and decrease in servo voltage. Grey relation analysis was performed to get the optimal parametric setting. Response surface method and artificial neural network predictors were used in the prediction of cutting speed and surface roughness. It was found that among the two predictors artificial neural network was accurate than response surface method.

Development of Multi-Wire Electric Discharge Machining for SiC Wafer Processing

2014 ◽  
Vol 778-780 ◽  
pp. 776-779 ◽  
Author(s):  
Masumi Ogawa ◽  
Kei Mine ◽  
Seiki Fuchiyama ◽  
Yasuhiro Tawa ◽  
Tomohisa Kato
Keyword(s):  
Electric Discharge ◽  
Wire Edm ◽  
Electric Discharge Machining ◽  
Entire Surface ◽  
Effective Removal ◽  
Diameter Ingot ◽  
Wire Electric Discharge Machining ◽  
Wafer Processing ◽  
Sic Wafer ◽  
Electric Discharge Pulse

In order to slice the larger size ingot toward 6 inch of silicon carbide (SiC), we are developing Multi-wire Electric Discharge Machining (EDM). To prevent wire break during slicing, we have developed the electric discharge pulse control system. So far, with 10 multi-wires, we have succeeded in slicing of 4 inch SiC balk single crystal without wire break. High quality slicing surface (e.g. small value of around 10 μm of SORI for 3 inchi wafer) was also achieved. By polishing methode, EDM-sliced wafer was estimated to have the uniform thickness of damaged layer over the entire surface. We confirmed that the wafer sliced by EDM can be processed in the later process, by grinding the 3 inch wafer. And it was confirmed that 6 inch ingot can be sliced with 10 multi-wire EDM, by slicing the boule of SiC poly crystal. For the larger diameter ingot than 4 inch, Multi-wire EDM will be practically used by the effective removal of machining chips from the machining clearance between the wire and work.

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