Machining Characteristics of Polycrystalline Silicon by Wire Electrical Discharge Machining

Yu, Po Huai; Lee, Hsiang Kuo; Yang, Lin; Qin, Shi; Yan, Biing Hwa; Huang, Fuang Yuan

doi:10.1080/10426914.2010.544808

Cited by 41 publications

(18 citation statements)

References 21 publications

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“…Rao and Pawar [19] proposed the mathematical models using response surface modeling (RSM) for correlating the interrelationships of various WEDM parameters such as pulse on time, pulse off time, peak current, and servo feed setting on the machining speed and surface roughness. Yu et al [20] explored the study on polycrystalline silicon material using WEDM process to optimize the groove width, surface roughness, and cutting speed. The results showed that pulse on time was the most significant factor for cutting speed, surface roughness, and groove width.…”

Section: Background Of Research Workmentioning

confidence: 99%

Experimental Investigation on Material Transfer Mechanism in WEDM of Pure Titanium (Grade-2)

Kumar¹,

Kumar

2013

Advances in Materials Science and Engineering

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This research work mainly focused on experimental investigation on material transfer mechanism in WEDM of pure titanium. The effects of machining parameters such as pulse on time, pulse off time, peak current, spark gap voltage, wire feed, and wire tension on the material removal rate (MRR), overcut, and surface roughness for pure titanium in WEDM process were explored. The selected machined samples were analyzed using energy dispersive X-ray analysis, scanning electron microscope, and X-ray diffraction techniques. It was observed from the results that a significant material transfer occurred from the dielectric, as well as tool, electrode on the work surface either in free form and/or in compound form. Also the multiresponse optimization of process parameters was done using desirability approach. The predictions from this model were validated by conducting experiments.

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Section: Background Of Research Workmentioning

confidence: 99%

Experimental Investigation on Material Transfer Mechanism in WEDM of Pure Titanium (Grade-2)

Kumar¹,

Kumar

2013

Advances in Materials Science and Engineering

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“…An experimental study on machining of polycrystalline silicon material using WEDM process to optimize the groove width, surface roughness and cutting speed was reported. The results showed that pulse-on time was the most significant factor for cutting speed, surface roughness and groove width (Yu et al, 2011).…”

Section: Introductionmentioning

confidence: 98%

Microstructure Analysis and Material Transformation of Pure Titanium and Tool Wear Surface After Wire Electric Discharge Machining Process

Kumar

2014

Machining Science and Technology

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The wire electric discharge machining process is an alternative for machining of the high strength temperature resistant materials. The present research work is mainly focused on the investigation of integrity of the work surface and wire electrode surface after machining with WEDM. Experimental results showed that pulse-on time, pulse-off time and peak current significantly affected the surface integrity with the formation of deep-wide overlapping craters, pock marks, debris, micro-cracks and recast layer. Both carbides and oxides were formed either in free form and/or in compound form due to decomposition of de-ionized water, machined samples and wire material. The compounds like titanium dioxide (rutile) (TiO 2 ), (TiO 0.325 ), Ti 2 O 3, Ilmenite (Fe 2 Ti 4 O), titanium carbides (TiC) and copper titanium dioxide (Cu 3 TiO 4 ) were formed due to phase transformations that were analyzed through X-ray diffraction and energy dispersive X-ray method. The effect of process parameters on the wear of wire surface has also been considered.

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“…High DE causes high heat generation across two electrodes, thereby facilitating large melting and evaporation of work material (Li et al, 2013;Yu et al, 2011). MR increases with increase in DE for rough cut.…”

Section: Effect On Machining Rate (Mr)mentioning

confidence: 99%

“…on machining performance like cutting speed (CS), metal removal rate (MRR), surface roughness (SR), geometrical accuracy, recast layer etc. in processing of different work materials ranging from simple alloy steel, aluminium MMC high strength-heat resisting alloys and composite materials (Bhuyan & Yadava, 2014;Bobbili et al, 2014;Delgado et al, 2011;Gupta & Jain, 2014;Hascalyk et al, 2004;Hewidy et al, 2005;Huang et al, 1999;Jangra & Grover, 2012;Kumar et al, 2013;Kumar et al, 2014;Prohaszka et al, 1997;Shandilya et al, 2013;Yu et al, 2011). The majority of the research works conducted on WEDM deal with rough cut and very limited research works are conducted for trim cutting operation (Jangra, 2012).…”

Section: Literature and Motivation For Present Workmentioning

confidence: 99%

An experimental study on trim cutting operation using metal powder mixed dielectric in WEDM of Nimonic-90

Kumar¹,

Jangra²,

Kumar³

2016

10.5267/j.ijiec

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This paper presents an experimental study on rough cut, trim cut using distilled water as a dielectric fluid and Al & Si metal powders in dielectric fluid for WEDM of Nimonic-90. First, the influence of discharge energy (DE) in rough cut is evaluated for machining rate (MR) and surface roughness (SR) and compared with trim cut without any metal powder additives in dielectric fluid. The effect of Al and Si metal powders (varying concentration of 1g/L, 2g/L and 3g/L) in dielectric fluid is studied separately and comparison is also made for MR, SR, recast layer and micro hardness of machined Nimonic-90. From the results it is observed that using trim cut, a fine and uniform surface texture is obtained irrespective of the high discharge energy of rough cut. Al and Si powders additives show a significant reduction in MR for trim cutting operation whereas a remarkable modification is obtained in surface textures after trim cut using metals powder mixed dielectric. SR improves with a concentration of 1g/L and shows a little increase with high concentration of both metals powder. Using metals powder in dielectric fluid, the recast layer becomes smooth and denser and thus, micro hardness increases.

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Machining Characteristics of Polycrystalline Silicon by Wire Electrical Discharge Machining

Cited by 41 publications

References 21 publications

Experimental Investigation on Material Transfer Mechanism in WEDM of Pure Titanium (Grade-2)

Experimental Investigation on Material Transfer Mechanism in WEDM of Pure Titanium (Grade-2)

Microstructure Analysis and Material Transformation of Pure Titanium and Tool Wear Surface After Wire Electric Discharge Machining Process

An experimental study on trim cutting operation using metal powder mixed dielectric in WEDM of Nimonic-90

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