An experimental study on micro-EDM in low-resistivity deionized water using short voltage pulses

2011 ◽  
Vol 58 (5-8) ◽  
pp. 533-544 ◽  
Author(s):  
Minh Dang Nguyen ◽  
Mustafizur Rahman ◽  
Yoke San Wong
Keyword(s):  
Experimental Study ◽  
Deionized Water ◽  
Micro Edm ◽  
Low Resistivity ◽  
Voltage Pulses

Transitions of micro-EDM/SEDCM/micro-ECM milling in low-resistivity deionized water

2013 ◽  
Vol 69 ◽  
pp. 48-56 ◽  
Author(s):  
Minh Dang Nguyen ◽  
Mustafizur Rahman ◽  
Yoke San Wong
Keyword(s):  
Deionized Water ◽  
Micro Edm ◽  
Low Resistivity ◽  
Micro Ecm

Improvement of Accuracy in Micro-EDM of Tungsten Carbide Using Deionized Water

2014 ◽  
Vol 625 ◽  
pp. 576-580
Author(s):  
Minh Dang Nguyen ◽  
Qian Yu Neo ◽  
Mustafizur Rahman ◽  
Yoke San Wong
Keyword(s):  
Tungsten Carbide ◽  
Removal Rate ◽  
Dimensional Accuracy ◽  
Deionized Water ◽  
Machining Process ◽  
Micro Edm ◽  
Short Pulses ◽  
Machined Parts ◽  
Voltage Pulses ◽  
Lower Tool

Tungsten carbide is widely used as molds and dies material due to its superior strength, hardness and wear resistance. However, these characteristics also make it very difficult to be machined. Because the material is removed by spark erosion, micro-EDM has been found to be an effective machining process to machine difficult-to-cut materials such as tungsten carbide. Notwithstanding that micro-EDM using deionized water yields many advantages compared to hydrocarbon oil such as higher removal rate, lower tool wear and thinner recast layer, it has not been widely used due to the poor dimensional accuracy of machined part. This is the result of stray material dissolution caused by the slight conductivity of deionized water. This unanticipated material removal is especially severe for tungsten carbide which is highly susceptible to corrosion. This paper presents an attempt to improve the accuracy of micro-EDM using deionized water by using short voltage pulses. A short pulses generator has been in-house developed for this purpose. The effects of pulse parameters on the stray material dissolution are investigated. It is observed that the stray material dissolution is localized when short voltage pulses are used. As a result, dimensional accuracy of machined parts is significantly enhanced.

Simultaneous micro-EDM and micro-ECM in low-resistivity deionized water

2012 ◽  
Vol 54-55 ◽  
pp. 55-65 ◽  
Author(s):  
Minh Dang Nguyen ◽  
Mustafizur Rahman ◽  
Yoke San Wong
Keyword(s):  
Deionized Water ◽  
Micro Edm ◽  
Low Resistivity ◽  
Micro Ecm

scholarly journals An Experimental Study on Processing TC4 with Nano Particle Surfactant Mixed Micro EDM

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6074
Author(s):  
Tingting Ni ◽  
Qingyu Liu ◽  
Zhiheng Chen ◽  
Dongsheng Jiang ◽  
Shufeng Sun
Keyword(s):  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Open Circuit ◽  
Deionized Water ◽  
Micro Edm ◽  
Nano Particle ◽  
Machining Performance ◽  
Machined Surface ◽  
Micro Electrical Discharge Machining ◽  
Lower Tool

Micro electrical discharge machining (micro EDM) is able to remove conductive material by non-contact instantaneous high temperature, which is more suitable for machining titanium and its alloys compared with traditional machining methods. To further improve the machining efficiency and machined surface quality of micro EDM, the nano particle surfactant mixed micro EDM method is put forward in this paper. Experiments were conducted to explore the effect of nano particle surfactant on the micro EDM performance of titanium alloy. The results show that the material removal rate of micro EDM in dielectric mixed with TiO2 is the highest when open-circuit voltage is 100 V, followed by Al2O3 and ZrO2. Lower tool wear rate can be produced by using dielectric mixed with nano particle surfactant. The taper ratio of micro EDM in dielectric mixed with nano particle surfactant is higher than that in deionized water. The surface roughness Ra of micro EDM in dielectric mixed with TiO2 can be 50% lower than that in deionized water. It is helpful to improve the machining performance by adding surface surfactant in the dielectric of micro EDM.

Experimental Study on Flow Boiling of Deionized Water in a Horizontal Long Small Channel

2018 ◽  
Vol 27 (2) ◽  
pp. 157-166 ◽  
Author(s):  
Qian Huang ◽  
Li Jia ◽  
Chao Dang ◽  
Lixin Yang
Keyword(s):  
Experimental Study ◽  
Flow Boiling ◽  
Deionized Water ◽  
Small Channel

Surface finishing of micro-EDM holes using deionized water

2009 ◽  
Vol 19 (4) ◽  
pp. 045025 ◽  
Author(s):  
Do Kwan Chung ◽  
Hong Shik Shin ◽  
Bo Hyun Kim ◽  
Min Soo Park ◽  
Chong Nam Chu
Keyword(s):  
Deionized Water ◽  
Surface Finishing ◽  
Micro Edm
Sign in / Sign up

Export Citation Format

Share Document