Multi-objective optimization of WEDM using cold treated brass wire for HSLA hardened steel

Tahir, Waseem; Jahanzaib, Mirza

doi:10.1007/s40430-019-2028-9

Cited by 14 publications

(5 citation statements)

References 65 publications

(76 reference statements)

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“…In this investigation work, it is evident that all the results of the analysis discussed above are in line with those results reported in various literature. 6,15–17,19,23–26 The variation of entry hole diameter with servo feed rate and wire feed rate is illustrated in Figure 10. Similarly, the relationship of servo feed rate and T on time with exit diameter is depicted in Figure 11.…”

Section: Analysis and Interpretation Of Experimental Resultsmentioning

confidence: 99%

“…In another longitudinal study, the effect of both cold-treated and non-cold-treated brass wire (0.3 mm diameter) along with other input parameters on the cutting speed, surface roughness, and kerf width was studied by Tahir et al. 19 through WEDM of high-strength low-alloy (HSLA) steels. The objective behind selection of cold treated wire is that to enhance the electrical conductivity of the wire by 24.5%, this could be due to the grain refinement at 70℃ for 24 h (cold treatment condition).…”

Section: Introductionmentioning

confidence: 99%

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WEDM microdrilling of 316 L stainless steel orthopedic implant

Sahu

Pattanayak

Panda

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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The development in manufacturing has insisted upon the fabrication of microdrilled holes on orthopedic implants, with finished side wall (devoid of cracks and burr), thin recast layer, low taper, and improved circularity at entry and exit of the hole. In this study, therefore, a multiobjective optimization of wire electric discharge machining microdrilling response characteristics is addressed in order to improve the hole quality characteristics and viability of implants. To improve the quality characteristics of the hole, a hybrid statistical analysis is developed based on grey relational analysis and coefficient of variation. It identifies the key process parameters that are responsible for improving the quality of the hole. The parametric study also reveals that wire feed rate and servo feed rate have a striking effect on the quality of the hole. An important implication of this study is that a thin recast layer, improved entry and exit circularity, adequate taper were observed under optimum drilling condition.

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Section: Analysis and Interpretation Of Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

WEDM microdrilling of 316 L stainless steel orthopedic implant

Sahu

Pattanayak

Panda

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Tahir et al [15] used a wire electric discharge machine to study the effects of cold treated(CT) and non-cold treated(NCT) brass wire electrodes on machining hardened (HSLA) steel. (CT) brass wire generates a smoother surface finish than (NCT) brass wire, and(NCT) brass wire creates a lower kerf width, according to the research.…”

Section: On the Basis Of Types Of Wire Usedmentioning

confidence: 99%

Experimental investigation and optimization of WEDM process for AISI 420 stainless steel

Jha

Garg

Shrivastava

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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AISI 420 Stainless steel is martensitic steel having sufficient corrosive resistance and outstanding hardness used for making knife blades, shear blades, hand tools, and surgical instruments for the medical industry. For the machining of this kind of high-strength material, WEDM is a popular advanced machining technique for creating items with complex forms and profiles. WEDM of AISI420 stainless steel is accomplished utilizing Zn coated copper wire as an electrode in this study. Machine input control parameters include pulse on time (Ton), pulse off time (Toff), peak current (Ip), and wire feed rate (Wf), whereas measured output response parameters include material removal rate (MRR), Kerf width (KW), and surface roughness (SR). Experiments were constructed using Taguchi L16 orthogonal arrays, and control parameters were optimized using Taguchi-based grey relational analysis (TGRA). Parametric analyses are done for multi-response optimization by obtaining grey relational grade (GRG). It has been found from the ANOVA table that Ton, Toff, Ip, and Wf are having % contributions of 85.67%, 4.38%, 8.47%, and 0.26% respectively. The optimal level of input parameters obtained by Taguchi-based GRA is Ton 125µs, Toff 40µs, Ip 220A, and Wf 8m/min. To validate the results confirmation tests are performed on optimal input parameters.

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“…Gong et al 14 have reported that the electrical parameters like peak current had the greatest effect than non-electrical parameters on surface roughness and machining time. Tahir and Jahanzaib 15 have conducted WEDM of high-strength low-alloy by both cold treatment and non-cold treated brass wires. It was found that pulse on time was the most contributing factor on cutting speed, surface roughness and kerf.…”

Section: Introductionmentioning

confidence: 99%

Slant type taper profiling and prediction of profiling speed for a circular profile during in wire electric discharge machining using Hastelloy-X

Manoj

Narendranath

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Hastelloy-X a nickel-based alloy used in nozzles, flame holders, turbine blades, turbocharges, jet engine tailpipes, afterburner components etc. having complex tapering profiles. Wire electric discharge machining proves to be the most beneficial machining technique as it provides required accuracy for the components. In the present research, a slant type taper fixture is employed for achieving taper angles as convention tapering have many hindrances like wire bend, angular inaccuracy, guide wear, insufficient flushing and wire breakage etc. and machining a simple circular profile on Hastelloy-X. The behaviour of different output parameters like profiling speed, surface roughness, profile areas, microhardness and recast layer were investigated for various input parameters for machined taper components at 0°, 15° and 30°. The cutting speed override parameter influenced most on the profiling speed and surface roughness. The wire offset parameter was found to be the most significant factor in the case of circular profile areas that were machined. The variation of different output parameters to profiling/cutting speed and taper angle was also highlighted. It is found the recast layer decreased which indicated lesser thermal degradation at higher taper angles at different profiling parameters. This is also validated by the microhardness where the machined surface hardness of taper angular profiles was found to be greater than the 0° profiles. The artificial neural networks and adaptive neuro-fuzzy interference system were used for the prediction of profiling speed. The adaptive neuro-fuzzy interference system was found better in prediction as the percentage error varies between 0–5 per cent. In conclusion, the profiling speed influences both on the accuracy and surface of machined taper circular profiles.

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Multi-objective optimization of WEDM using cold treated brass wire for HSLA hardened steel

Cited by 14 publications

References 65 publications

WEDM microdrilling of 316 L stainless steel orthopedic implant

WEDM microdrilling of 316 L stainless steel orthopedic implant

Experimental investigation and optimization of WEDM process for AISI 420 stainless steel

Slant type taper profiling and prediction of profiling speed for a circular profile during in wire electric discharge machining using Hastelloy-X

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