Machining of curved profiles on tungsten carbide-cobalt composite using wire electric discharge process

Naveed, Rakhshanda; Mufti, Nadeem Ahmad; Mughal, Mohammad Pervez; Saleem, Muhammad Qaiser; Ahmed, Naveed

doi:10.1007/s00170-017-0592-7

Cited by 20 publications

(8 citation statements)

References 31 publications

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“…One of the challenges for materials in WEDM is tungsten carbide. Many researchers have explored the use of wire-cut EDM to improve the cutting performance of tungsten [4][5][6][7][8][9][10]. Naveed et al investigated the machining of curved profiles on tungsten carbide-cobalt composite using WEDM.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Wire-EDM Performance with Zinc-Coated Brass Wire Electrode and Ultrasonic Vibration

Muttamara

Nakwong

2023

Micromachines

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This study aimed to investigate the performance of zinc-coated brass wire in wire-cut electrical discharge machining (EDM) using an ultrasonic-assisted wire on tungsten carbide. The research focused on the effect of the wire electrode material on the material removal rate, surface roughness, and discharge waveform. Experimental results demonstrated that using ultrasonic vibration improved the material removal rate and reduced surface roughness compared to conventional wire-EDM. Cross-sectional SEM of the white layer and discharge waveform were investigated to explain the phenomena of ultrasonic vibration in the wire-cut EDM process.

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Section: Introductionmentioning

confidence: 99%

Enhancing Wire-EDM Performance with Zinc-Coated Brass Wire Electrode and Ultrasonic Vibration

Muttamara

Nakwong

2023

Micromachines

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“…In WC-Co machining, Naveed and his co-researchers discovered that the concave and convex curved profiles can be machined to a 10 mm tolerance using optimized WEDM parameter settings. 27 After reviewing a substantial number of literatures, it has been observed that, in addition to wire path modification strategy and trim cutting operation, modification of process parametric condition also plays a pivotal role in determining the accuracy of corners and complicated profiles. Thus, the role of several process parameters on geometrical responses such as corner accuracy, and overcut of complicated profiles are discussed in some of the research investigations.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic investigation of geometric responses in Wire EDM machined complex-shaped profile: A machine learning based approach

Saha

Gupta

Maity

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Wire electric discharge machining (WEDM) has gained tremendous market share due to its potential to create complex profiles and ease in machining exotic materials. The inherent problem of wire lag, however, has a significant impact on the accuracy and precision of complex profiles in WEDM. Furthermore, if parametric uncertainties are not taken into account during machining of complex profiles, problems like geometrical inaccuracy and imprecision are likely to worsen. Hence, in the present study, we focused on the role of parametric uncertainties on geometrical parameters such as corner error (CE) and undercut (UC) of complicated profile. In this regard, the machine learning (ML) driven framework is proposed, wherein the Gaussian process regression model is integrated with the experimental responses gathered from the WEDM. The sample-space to train and validate the ML model is constructed by performing the WEDM for the experimental plan, which is designed on the basis of face-centered central composite design. The constructed ML model is rigorously tested and validated to ensure its predictive accuracy. The ML-based WEDM framework is further extended to perform data-driven uncertainty quantification and sensitivity analysis to reveal the likelihood of variations in geometrical precision due to inherent parametric uncertainties. The constructed model is further deployed for the data-driven sensitivity analysis and to reveal the probabilistic behavior of responses in the presence of parametric uncertainties. The results of this study will help to develop and expand the WEDM robust control technique.

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“…A review of past work has been conducted on EDM or WEDM of WC composites [10][11][12][13][14]. Optimization of machining process parameters is also an essential and challenging task to obtain the best possible machinability, specially when machine DTM materials using advanced machining processes [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…Poor surface quality is obtained at high value of peak current and pulse duration the surface integrity along with the surface features of the machined. Naveed et al [11] successfully fabricated various typical curved profiles on WC-Co composite using WEDM. They found pulseon time, servo voltage, and wire tension as the most significant factors affecting the radii of the profiles.…”

Section: Introductionmentioning

confidence: 99%

Intelligent optimization of wire-EDM parameters for surface roughness and material removal rate while machining WC-Co composite

Gupta¹

2021

FME Transactions

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This work presents the wire-EDM of WC-Co composite and optimization of process parameters using an integrated technique of response surface methodology (RSM), Vise Kriterijumska Optimizacija Kompromisno Resenje (VIKOR) and artificial bee colony (ABC) algorithm to obtain the best set of machinability indicators. Wire feed (WF), servo voltage (SV), pulse off-time (Pon) and pulse on-time (Poff) are the variable process parameters, whereas root mean square roughness (Rq), average surface roughness (Ra) and material removal rate (MRR) are the machinability indicators considered in the present work. A total of twenty nine experiments have been conducted based on Box Behnken design (BBD) technique of response surface methodology. VIKOR has been used for normalization of responses and followed by solving empirical models using ABC algorithm to obtain optimized process parameters setting. WF-12 m/min, SV-65V, Pon-116 µs, Poff-20 µs are the optimum wire-EDM parameters obtained by intelligent RSM-VIKOR-ABC technique that produced best values of Ra-4.51 µm, Rq-5.64 µm, MRR-0.061 mm3 /min simultaneously. The validation test confirmed an improvement up to 15% in the response characteristics which proved the effectiveness of this novel hybrid technique for optimization. The optimum parameter setting is for ready industrial reference to attain best surface quality and process productivity for WC-Co composite machining by wire-EDM.

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Machining of curved profiles on tungsten carbide-cobalt composite using wire electric discharge process

Cited by 20 publications

References 31 publications

Enhancing Wire-EDM Performance with Zinc-Coated Brass Wire Electrode and Ultrasonic Vibration

Enhancing Wire-EDM Performance with Zinc-Coated Brass Wire Electrode and Ultrasonic Vibration

Probabilistic investigation of geometric responses in Wire EDM machined complex-shaped profile: A machine learning based approach

Intelligent optimization of wire-EDM parameters for surface roughness and material removal rate while machining WC-Co composite

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