Influence of process parameters on the surface integrity of micro-holes of SS304 obtained by micro-EDM

Das, Alok Kumar; Kumar, P. Sreenivasa; Sethi, Abhijeet; Singh, Pawandeep; Hussain, Manowar

doi:10.1007/s40430-016-0488-8

Cited by 36 publications

(13 citation statements)

References 30 publications

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“…The porosity and micro-holes in the recast layer are high at high discharge energy, which tend to reduce the hardness [10]. Another reason is the oxidation of elements of the recast layers, such as zinc, copper, and brass, which decreases its hardness [33][34][35]. When the rotational speed increases, the availability of the discharge energy per unit circumferential length of the workpiece decreases.…”

Section: Resultsmentioning

confidence: 99%

Surface integrity in wire-EDM tangential turning of in situ hybrid metal matrix composite A359/B₄C/Al₂O₃

Srivastava

Nag

Dixit

et al. 2018

Science and Engineering of Composite Materials

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In this work, wire electric discharge turning, a novel and unconventional technique, was used for the turning operation of a newly developed hybrid metal matrix composite of aluminum (A359/B4C/Al2O3) fabricated in-house by electromagnetic stir casting. The objective of the work was to examine the effect of rotational speed on the elements of surface integrity. It involved the measurement of various parameters such as the roughness (Ra, Rq, Rz), morphology of the recast layers, microhardness variation, and the formation of residual stresses on the machined surface and in the subsurface during the operation. The quality of the turned surface was examined by 3D surface visualization images and surface topographical details obtained by an Olympus LEXT OLS 3100 laser confocal microscope. Further, surface study at the microscopic level was done by field-effect scanning electron microscopy (FE-SEM) images to examine the surface defects. The measurement results revealed a successful turning operation, which showed a dull, textured surface without any specific texture or pattern on the machined surface. The surface had many peaks and valleys with small-scale of defects such as surface porosity. However, these defects were negligible and resulted in a smooth surface finish at high rotational speeds.

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Section: Resultsmentioning

confidence: 99%

Surface integrity in wire-EDM tangential turning of in situ hybrid metal matrix composite A359/B₄C/Al₂O₃

Srivastava

Nag

Dixit

et al. 2018

Science and Engineering of Composite Materials

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“…The effects of the process inputs, including the T on , VO, and ultrasonic vibration on the recast layer thickness (TL), micro-hardness (MH), and the chemical composition of the micro-holes for the EDM process have been analyzed [ 13 ]. The findings revealed that the depth value of the recast layer is in the range of 9–23 μm.…”

Section: Introductionmentioning

confidence: 99%

Multi-Response Optimization of Electrical Discharge Drilling Process of SS304 for Energy Efficiency, Product Quality, and Productivity

2020

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The electrical discharge drilling (EDD) process is an effective machining approach to produce various holes in difficult-to-cut materials. However, the energy efficiency of the EDD operation has not thoroughly been considered in published works. The aim of the current work is to optimize varied parameters for enhancing the material removal rate (MRR), saving drilled energy (ED), and decreasing the expansion of the hole (HE) for the EDD process. Three advanced factors, including the gap voltage adjustor (GAP), capacitance parallel connection (CAP), and servo sensitivity selection (SV), are considered. The predictive models of the performances were proposed with the support of the adaptive neuro-based fuzzy inference system (ANFIS). An integrative approach combining the analytic hierarchy process (AHP) and the neighborhood cultivation genetic algorithm (NCGA) was employed to select optimal factors. The findings revealed the optimal values of the CAP, GAP, and SV were 6, 5, and 4, respectively. Moreover, the ED and HE were decreased by 16.78% and 28.68%, while the MRR was enhanced by 89.72%, respectively, as compared to the common setting values. The explored outcome can be employed as a technical solution to enhance the energy efficiency, drilled quality, and productivity of the EDD operation.

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“…Most of the tool materials like high-speed steels and ceramics cannot be effectively applied for the machining of such hard MMCs because of the rapid wear due to the presence of hard reinforcement particles 21) . However, coated carbides tools can withstand the tool to wear for a short time of machining [22][23] . Most of the authors have reported that polycrystalline diamond (PCD) tools can be applied for the MMCs because of the capability of valuable tool life 24) .…”

Section: Introductionmentioning

confidence: 99%

3D Visualization and Topographical Analysis in Turning of Hybrid MMC By CNC Lathe SPRINT 16TC Made of BATLIBOI

Srivastava¹,

Dwivedi²,

Maurya³

et al. 2020

Evergreen

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The performance evaluations of any manufacturing materials are significantly affected by their quality of surface as well as mechanical and metallurgical properties. MMCs are preferable material for the automobile and aircraft industries due to its excellent properties such as lightweight, high strength to weight ratio and high wear resistance. However, the presence of hard reinforcement particles in the matrix alloy makes it difficult to machine, which leads to the microstructural variation and extent of the subsurface damage. In the present study, three different rotational speed (varies from 200 rpm to 600 rpm) is used to turn the surface of previously in-house made hybrid MMC A359/2%B4C/2%Al2O3 on CNC lathe SPRINT 16TC made by BATLIBOI. An attempt is made to examine the 3D surface visualization and generate the surface roughness report by Micro-Prof FRT optical profilometer, surface topographical by Olympus Lext OLS 3100 laser confocal microscope for surface characterization. The results reveal the smooth machined surface with surface roughness ranges between 1.5 µm to 2.9 µm. The topographical images revealed a flat surface full of repetitive cutting marks parallel to each other and along the direction of cutting. There are no significant topographical differences are varying rotational speed.

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Influence of process parameters on the surface integrity of micro-holes of SS304 obtained by micro-EDM

Cited by 36 publications

References 30 publications

Surface integrity in wire-EDM tangential turning of in situ hybrid metal matrix composite A359/B₄C/Al₂O₃

Surface integrity in wire-EDM tangential turning of in situ hybrid metal matrix composite A359/B₄C/Al₂O₃

Multi-Response Optimization of Electrical Discharge Drilling Process of SS304 for Energy Efficiency, Product Quality, and Productivity

3D Visualization and Topographical Analysis in Turning of Hybrid MMC By CNC Lathe SPRINT 16TC Made of BATLIBOI

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Influence of process parameters on the surface integrity of micro-holes of SS304 obtained by micro-EDM

Cited by 36 publications

References 30 publications

Surface integrity in wire-EDM tangential turning of in situ hybrid metal matrix composite A359/B4C/Al2O3

Surface integrity in wire-EDM tangential turning of in situ hybrid metal matrix composite A359/B4C/Al2O3

Multi-Response Optimization of Electrical Discharge Drilling Process of SS304 for Energy Efficiency, Product Quality, and Productivity

3D Visualization and Topographical Analysis in Turning of Hybrid MMC By CNC Lathe SPRINT 16TC Made of BATLIBOI

Contact Info

Product

Resources

About

Surface integrity in wire-EDM tangential turning of in situ hybrid metal matrix composite A359/B₄C/Al₂O₃

Surface integrity in wire-EDM tangential turning of in situ hybrid metal matrix composite A359/B₄C/Al₂O₃