scholarly journals Fabrication of Micro Structures by Ultrashort Voltage Pulse Electrical Discharge Machining

2018 ◽  
Vol 06 (02) ◽  
pp. 235-243
Author(s):  
Chenxue Wang ◽  
Weiyu He ◽  
Yan Xiao
Keyword(s):  
Voltage Pulse ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Micro Structures ◽  
Pulse Electrical Discharge

Investigation on the Micro-Structures and Properties of the P20 Steel Surface after Electrical Discharge Machining

2014 ◽  
Vol 789 ◽  
pp. 391-395 ◽  
Author(s):  
Xiao Liang Zhang ◽  
Zhao Xi Wang ◽  
Jun Liang ◽  
Hui Ji Shi ◽  
Yu. G. Matvienko
Keyword(s):  
Base Metal ◽  
Electrical Discharge ◽  
Pulse Current ◽  
Electrical Discharge Machining ◽  
Specimen Surface ◽  
Material Surface ◽  
Structure And Properties ◽  
Molten Layer ◽  
Structures And Properties ◽  
Micro Structures

Electrical Discharge Machining (EDM) is the machining technique of discharging corrosion of the material surface. The effect of the EDM pulse current on the micro structure and properties of the P20 specimen surface were investigated. Three layers were observed on the specimen surface after discharging: ablation layer, molten layer and recrystallized layer. The experimental results show that with the increment of the pulse current, the thickness of the molten layer and recrystallized layer increased. The contents of the oxygen and carbon on the outside of the molten layer were higher than the base metal for the diffusion during the machining. The micro hardness reduced from the out layer to the base metal after the heat treatment, indicating the mechanical properties changing of the machining surface. In the molten layer, micro fracture is caused by the residual thermal stress during the machining.

3D Milling by Micro Electrical Discharge Machining

2010 ◽  
Vol 659 ◽  
pp. 467-470
Author(s):  
Balázs Zsolt Farkas ◽  
Márton Takács
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Research Work ◽  
Milling Process ◽  
Physical Principle ◽  
Micro Milling ◽  
Micro Machining ◽  
Research Activity ◽  
Micro Electrical Discharge Machining ◽  
Micro Structures

One of the most important tasks of the manufacturing engineering of our accelerated world is giving suitable answer to the ever growing demand on miniaturization arising on every field of the industry. Our institute has been carried out theoretical and experimental research work on micro machining since 10 years. Micro machining can be defined as formation of structures smaller than 1 mm. Our previous research activity focused primarily on micro milling process carried out by carbide end mill. Milling offers the most various machining method among the chip removal processes. Investigation of formation of micro structures by electrical discharge machining (EDM) is a perfect continuance of the research work. A process similar to micro milling can be realized by the lateral moving of the miniature cylindrical electrode of an EDM machine, just the physical principle of material removing is different. This paper introduces the latest results of our research work, including

Study on Micro Reversible Electrical Discharge Machining Method for the Fabrication of Micro Structures

2009 ◽  
Vol 626-627 ◽  
pp. 279-284 ◽  
Author(s):  
Zi Long Peng ◽  
Zhen Long Wang ◽  
Yu Kui Wang ◽  
Ying Huai Dong ◽  
H. Chen
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Deposition Process ◽  
Machining Process ◽  
Micro Electrical Discharge Machining ◽  
Steel Material ◽  
Machining System ◽  
Micro Structures ◽  
Edm Process ◽  
Better Than

A reversible machining method using micro electrical discharge machining (EDM) was developed. This new method can achieve depositing or selective removing of metal material for the fabrication of micro structures. It is easy to transform the machining process from deposition to removal in one EDM machining system. In micro EDM deposition process, brass, tungsten and steel material can be deposited successfully. The deposited material has compact fine texture and combines close to workpiece. Then, micro complex structures by series deposition strategy and sub-deposition strategy were deposited. In the selective removal process, the machining effects of different working mediums were researched. Results show that the machining effect in liquid medium is better than that of in air. Finally, using the micro reversible EDM process, a micro square column with 0.070mm in side length, 0.750mm in height and a micro cylinder with 0.140mm in diameter, 1.180mm in height were fabricated.

Experimental Research of Micro Reversible Electrical Discharge Machining

2009 ◽  
Vol 69-70 ◽  
pp. 177-181
Author(s):  
Zi Long Peng ◽  
Zhen Long Wang ◽  
Ying Huai Dong ◽  
Hui Chen
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Machining Process ◽  
Tool Electrode ◽  
Micro Edm ◽  
Micro Electrical Discharge Machining ◽  
Metallurgical Bonding ◽  
Machining System ◽  
Micro Structures ◽  
Edm Process

Based on the principle of micro electrical discharge machining (EDM), a reversible machining method is proposed, which can achieve depositing or removing selectively metal material for the fabrication of micro structures. It is easy to transform the machining process from deposition to removal in one machining system. The characteristics of the deposited material show that the components of deposited material are almost the same as those of the tool electrode, and the metallurgical bonding has formed on the interface between the deposited material and the base. Moreover, the deposited material has well machinability in different micro EDM selective removal process, including micro EDM die-sinking and micro EDM milling. As a result, a micro square column with 0.1mm in side length, 0.88mm in height and a micro cylinder with 0.14mm in diameter, 1.18mm in height were fabricated by using the micro reversible EDM process.

Tribocorrosion Properties of Titanium Alloy Modified By Electrical Discharge Machining

2017 ◽  
Author(s):  
Bruna Michelle de Freitas ◽  
Carlos augusto Henning Laurindo ◽  
Paulo Soares ◽  
Leticia Bemben
Keyword(s):  
Titanium Alloy ◽  
Electrical Discharge ◽  
Electrical Discharge Machining
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