The use of SiC powder in water as dielectric for micro-slit EDM machining

Chow, Han Ming; Liu, Yang; Chen, Lin; Chen, Yong

doi:10.1016/j.jmatprotec.2007.04.130

Cited by 147 publications

(77 citation statements)

References 10 publications

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“…Figure 3(a) shows the scanning electron micrographs of W300 die-steel machined with high concentration Al powder (4 g/l) mixed kerosene at high current (18 A) and low pulse on-time (120 µs) at ×50 magnifications. When powders are added to the dielectric fluid multiple discharging effects were created 15 . At high pulse currents, these energies are sufficient enough to melt and evaporate the work surface producing uniform craters with better surface morphology.…”

Section: Scanning Electron Micrographic Analysismentioning

confidence: 99%

Surface Morphology of Die-Steel Machined with Al Powder Mixed Distilled Water and Kerosene in Edm A Comparison

2018

IJCTR

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:In this paper, an attempt has been made to compare the effect of Al powder mixed distilled water and kerosene dielectric fluids with respect to white-layer thickness (WLT) and surface morphology. The work and tool electrode materials used are W300 die-steel and electrolytic copper respectively. Pulse peak current, pulse on-time and concentration of Al powder are taken as the process parameters to study white-layer thickness. The experiments are planned using face centred central composite design procedure (FCCCD). From the experimental results it is found that, better surface morphology obtained at 4 g/l of Al in kerosene at high peak current of 18 A.

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Section: Scanning Electron Micrographic Analysismentioning

confidence: 99%

Surface Morphology of Die-Steel Machined with Al Powder Mixed Distilled Water and Kerosene in Edm A Comparison

2018

IJCTR

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“…Numerous research attempts (Chow et al 2008;Chow et al 2000;Han et al 2007;Kansal et al 2005aKansal et al , 2005bKansal et al , 2006Kansal et al , 2007aKansal et al , 2007bPeças and Henriques 2003;Wong et al 1998;Wu et al 2005;Yeo et al 2007) have been reported in the field of powder mixed electric discharge machining (PMEDM). In electric discharge machining (EDM), to achieve better surface finish negative polarity (tool + ve, work -ve) was found as one of the prominent factors (Wu et al 2005).…”

Section: Pmedm Of Conductive Ceramic Materialsmentioning

confidence: 99%

“…The negative polarity gave better results in PMEDM (Wong et al 1998) than positive polarity (tool -ve, work + ve). Additional requirements for achieving good surface finish in PMEDM as reported in the literature were low pulse on time (Wong et al 1998), low discharge current (Chow et al 2000;Han et al 2007), uniform dispersion of discharges (Chow et al 2008;Chow et al 2000;Wong et al 1998), reduction in breakdown voltage (Han et al 2007) and low discharge energy (Han et al 2007;Wu et al 2005;Yeo et al 2007).…”

Section: Pmedm Of Conductive Ceramic Materialsmentioning

confidence: 99%

Processing of Al2O3–SiCw–TiC ceramic composite by powder mixed electric discharge grinding

Satyarthi¹,

Pandey²

2016

Mech Adv Mater Mod Process

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Background: The machining of conductive alumina ceramic was successful by the electric discharge grinding (EDG). Therefore, the aim of the present work is to increase the material removal rate (MRR) during EDG of conductive alumina ceramic by addition of ceramic powder with dielectric. Methods: To achieve the objective through experimental investigation is carried out and the influence of input process parameters (powder concentration, duty ratio, pulse on time, table speed and wheel speed) on surface roughness (SR), MRR and surface integrity has been studied. The fine grade silicon carbide powder of #1000 mesh sizes was mixed in dielectric medium with varying concentration to understand the influence of the powder concentration and its interaction with other process parameters during powder mixed electric discharge grinding (PMEDG). The central composite rotatable design (CCRD) has been used to plan the experiments. Optimization of the obtained statistical models of MRR and SR has been done to obtain highest MRR and lowest SR. Result: It was observed that the MRR achieved by PMEDG was 3 -10 times higher than EDG. It was found that all the process factors and interactions show significant contribution on SR. The SR obtained by PMEDG was 2 -4 times higher than EDG. Conclusions: It has been established that the PMEDG process is a better option for processing of Al 2 O 3 -SiC w -TiC ceramic material as preliminary operation before EDG to achieve high MRR. In the present work the surface and subsurface damages were also assessed and characterized by the scanning electron microscope (SEM).

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“…Han-Ming Chow, Lieh-Dai Yang, Ching-Tien Lin, YuanFeng Chen [9], Micro-slit EDM process along with small discharge energy and SiC powder in pure water was investigated in this study. SiC powder was added to pure water as a working .uid to verify the micro-slit EDM process performance.…”

Section: Ijsrnetmentioning

confidence: 99%

Review on Effect of Powder Mixed Dielectric on Material Removal Rate in Electric Discharge Machining

2015

IJSR

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Powder mixed electric discharge machining (PMEDM) is a recent innovation for enhancing the capabilities of electrical discharge machining process. The objective of present study is to realize the potential of silicon powder as additive in enhancing machining capabilities of PMEDM. Taguchi methodology has been adopted to plan and analyze the experimental results. L16 Orthogonal Array has been selected to conduct experiments. Peak current, Pulse on time, pulse off time, voltage, and concentration of fine silicon powder added into the dielectric fluid were chosen as input process variables to study performance in terms of material removal rate. The ANOVA analysis identifies the most important parameters to maximize material removal rate.

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The use of SiC powder in water as dielectric for micro-slit EDM machining

Cited by 147 publications

References 10 publications

Surface Morphology of Die-Steel Machined with Al Powder Mixed Distilled Water and Kerosene in Edm A Comparison

Surface Morphology of Die-Steel Machined with Al Powder Mixed Distilled Water and Kerosene in Edm A Comparison

Processing of Al2O3–SiCw–TiC ceramic composite by powder mixed electric discharge grinding

Review on Effect of Powder Mixed Dielectric on Material Removal Rate in Electric Discharge Machining

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