scholarly journals Recent Progress in Electrical Discharge Machining. Micro Electric Discharge Scanning Technology.

1998 ◽  
Vol 64 (12) ◽  
pp. 1727-1730 ◽  
Author(s):  
Naokazu TOMIMOTO ◽  
Takuii MAGARA ◽  
Takashi YUZAWA ◽  
Naoki WATANABE
Keyword(s):  
Electric Discharge ◽  
Electrical Discharge ◽  
Recent Progress ◽  
Electrical Discharge Machining

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.

Design and Experimental Investigation on High Efficient Horizontal Micro Electrical Discharge Machine

2013 ◽  
Vol 456 ◽  
pp. 32-37
Author(s):  
Xia Yun Shu ◽  
Hong Hai Zhang
Keyword(s):  
Electric Discharge ◽  
Electrical Discharge ◽  
Influence Factor ◽  
Electrical Discharge Machining ◽  
Electrical Discharge Machine ◽  
Examination System ◽  
Micro Electrical Discharge Machining ◽  
Grinding Method ◽  
High Efficient ◽  
Discharge Machine

Micro-electrical discharge machining is a non-contact manufacturing process without macroscopic force. Microelectrode fabrication is the fundamental and influence factor of micro electric discharge machining. As for the efficiency of microelectrode fabrication, this paper proposed a fast online microelectrode fabrication method by an efficient horizontal micro electric discharge machine, in which an online diamond wheel ultra-precision grinding method and an online wire electrical discharge grinding method is combined to fabricate microelectrode. Machine designed in this paper consist of a CCD online dimension examination system, precision motion and feeding system, nanosecond-pulse independent discharged power supply and gap state-detection system. experimental study on microelectrode, micro nozzle fabrication and microstructure milling by the machine conducted. Microelectrode with 15 micrometers in diameter and micro hole with 50 micrometers in diameter are done in experiment. Results show that the composite method improves the efficiency of micro electrical discharge machining.

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.

Electric discharge milling of polycrystalline diamond

1997 ◽  
Vol 211 (8) ◽  
pp. 643-647 ◽  
Author(s):  
Y H Liu ◽  
Y F Guo ◽  
J C Liu
Keyword(s):  
Surface Area ◽  
Electric Discharge ◽  
Electrical Discharge ◽  
Pulse Generator ◽  
Electrical Discharge Machining ◽  
Polycrystalline Diamond ◽  
Large Surface Area ◽  
Lower Efficiency ◽  
Pulse On Time ◽  
Electric Discharge Milling

Polycrystalline diamond (PCD) has been used widely in modern industry. However, the manufacture of PCD blanks is not an economical and efficient process. The shaping of PCD blanks with conventional machining methods (such as grinding), is a long, labour-intensive and costly process. Electromachining processes promise to be effective and economical techniques for the production of tools and parts from PCD blanks. Wire electric discharge machining is able to effectively slice PCD. Electrical discharge machining (EDM) and electrical discharge grinding (EDG) shape PCD blanks at a lower cost. However, EDM and EDG of a large surface area on PCD show lower efficiency. This paper presents a new process of machining PCD using electrical discharge (ED) milling. ED milling employs a DC source instead of the pulse generator used in EDM, and uses a water-based emulsion as the machining fluid. This process is able to effectively machine a large surface area on PCD, and effectively machine other advanced conducting materials such as cubic born nitride (CBN), and ceramics. The effect of pulse on-time, peak current, and polarity on the process performance has been investigated.

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