An experimental study for multi-pass cutting operation in wire electrical discharge machining of WC-5.3% Co composite

Jangra, Kamal Kumar

doi:10.1007/s00170-014-6218-4

Cited by 46 publications

(28 citation statements)

References 30 publications

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“…8 presents thickness of recast layer (TRL) corresponding to the different machining conditions. The average TRL (in µm) for high DE for rough cut is found nearly 15 µm which is quite low as compared with steel alloys and WC-Co composites (Jangra, 2015). Trim cutting operation makes a remarkable reduction in TRL and is noticed from Fig.…”

Section: Surface Morphology and Recast Layermentioning

confidence: 81%

“…Results indicate that surface characteristics are improved using single trim cut with optimal machining parameters and correct wire offset, irrespective the high DE of rough cut. Jangra (2015) investigated multi trim cutting operation after a rough cut in WEDM for WC-5.3% Co composite. Using Taguchi' design of experiment method, influence of Ip, Ton, wire offset (WO) value and number of trim cuts are evaluated on two performance measures namely SR and depth of material removed in trim cutting operation.…”

Section: Literature and Motivation For Present Workmentioning

confidence: 99%

“…This graph also shows that the SR may be improved significantly using trim cutting operation irrespective of high DE in rough cut operation. In trim cutting operation, a very thin layer of surface material is removed at appropriate wire offset value and thereby surface irregularities (peaks) are minimized to improve the SR. Wire offset (WO) has a significant impact on SR for trim cut (Jangra, 2015;Sarkar et al, 2008). By decreasing WO value beyond 125µm (radius of wire), the area of contact between wire electrode and work surface increases.…”

Section: Effect On Surface Roughness (Sr)mentioning

confidence: 99%

“…In trim cut, wire electrode traces back the rough cut path with certain value of wire offset (WO) to remove a very small layer of work surface (Jangra, 2015;Sarkar et al, 2008) as shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Surface Morphology and Recast Layermentioning

confidence: 81%

Section: Literature and Motivation For Present Workmentioning

confidence: 99%

Section: Effect On Surface Roughness (Sr)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…Result shows that using single trim cutting operation with correct machining parameters and appropriate wire offset, surface characteristics could be improved irrespective of the rough cutting operation. Jangra KK (2015) investigated the multi-pass cutting operation in WEDM of WC-Co composite. Trim cuts were performed using Taguchi method to investigate the influence of rough cut history, discharge current, pulse-on time, wire offset and number of trim cuts for two performance characteristics namely surface roughness and depth of material removed.…”

Section: Trim Cutting Operationmentioning

confidence: 99%

An experimental investigation and statistical modelling for trim cutting operation in WEDM of Nimonic-90

Kumar¹,

Kumar²,

Jangra³

2015

10.5267/j.ijiec

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Trim cutting operation in wire electrical discharge machining (WEDM) is considered as a probable solution to improve surface characteristics and geometrical accuracy by removing very small amount of work materials from the surface obtained after a rough cutting operation. In this study, an attempt has been made to model the surface roughness and dimensional shift in trim cutting operations in WEDM process through response surface methodology (RSM). Four process parameters; namely pulse-on time (Ton), servo voltage (SV), wire depth (Wd) and Dielectric flow rate (FR) have been considered as input parameters in trim cutting operations for modelling. Desirability function has been employed to optimize multi performance characteristics. Increasing the value of Ton, Wd and FR increases the surface roughness and dimensional shift but increasing SV decreases both surface roughness and dimensional shift. Quadratic models have been proposed for both the performance characteristics. In present experimentation, thickness of recast layer was observed in the range of 6μm to 12μm for low to high value of discharge parameters.

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Prediction of Performance Measures in Wire Electrical Discharge Machining of Aluminum–Fly Ash Composites Using Regression Analysis

Palanisamy¹,

Manikandan²,

Raju³

et al. 2020

Lecture Notes in Mechanical Engineering

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An experimental study for multi-pass cutting operation in wire electrical discharge machining of WC-5.3% Co composite

Cited by 46 publications

References 30 publications

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

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

An experimental investigation and statistical modelling for trim cutting operation in WEDM of Nimonic-90

Prediction of Performance Measures in Wire Electrical Discharge Machining of Aluminum–Fly Ash Composites Using Regression Analysis

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