Open Access

Table 5

Summary of research work reported on optimization studies related to EDM/WEDM of Nimonic superalloys.

Reference Work/electrode/dielectric Input parameter Output parameter The focus of the work Remark/Discussion
[123] Nimonic 75/ Cu and brass/spark erosion oil TM, IP, Vg, Ton, Toff, Tool lift time (TLT) MRR, TWR, SR MOO during EDM Optimum parameters using Taguchi based grey relational analysis are TM = Cu, IP = 12 A, Vg = 500 V, Ton = 200 μs, Toff = 15 μs, TLT = 2 s
[124] Nimonic 75/Cu, brass TM, Ton, Toff, TLT, Vg, gap current MRR, TWR, SR MOO during ultrasonic-assisted EDM Optimal parameters from Taguchi- grey relational analysis: TM = Cu, Ton = 200 μs, Toff = 15 μs, TLT = 2 s, Vg = 15 V, gap current = 12 A
[125] Nimonic 90/Cu/kerosene (powder = Si) Powder concentration, discharge current, spark on duration, spark off duration SR, recast layer thickness Experimental instigation of powder-mixed EDM Powder concentration = 12 g/L, discharge current = 3 A, spark on duration = 35 μs, spark off duration = 49 μs
[126] Nimonic 80A/ zinc-coated brass wire electrode IP, Ton, Toff, FR SR Optimization during WEDM From ANOVA, SR increases with a decrease in the Toff; SR is minimized by increasing the Ton and IP
[127] Nimonic 80A/ Mo/de-ionized water Duty factor (DF), Vg, FR MRR, wire wear ratio, SR Optimization during WEDM Dominant factor is DF; increase in DF all output responses increase; optimum parameters are DF = 0.8771, Vg = 17 V and FR = 17 m/min
[128] Nimonic C263 /Cu, W, and Cu-W/ kerosene IP, Vg, Ton, DF, TM SEC, machining noise, MRR, TWR, SR, radial over cut Sustainable EDM to evaluate and optimize the responses Optimal values from hybrid optimization; IP = 3 A, Vg = 60 V, Ton = 100 μs, DF = 85%, TM = Cu
Ton has great influences on SEC; IP, and TM have a significant impact on noise, TWR, and MRR; IP is a dominant factor for SR
[129] Nimonic 80A/ Cu/ kerosene IP, Ton, Toff SR and MRR MOO during EDM of Nimonic 80A Optimum RSM parameters; IP = 13.49 A, Ton = 150 μs, Toff = 4 μs; Ton shows the stronger effect on MRR followed by IP and Toff; Ton has both positive and negative impact on SR
[130] Nimonic 80A/ brass wire/de-ionized water IP, Vg, duty cycle, wire- speed MRR and kerf width Experimental investigation of WEDM of Nimonic 80A and MOO RSM optimum WEDM parameters: IP = 57 A, Vg = 90 V, duty cycle = 75 μs, wire speed = 7 mm/min; IP shows high impact on MRR and kerf width
[131] Nimonic 901/ Cu–W Ton, IP, servo voltage, powder concentration SR, TWR, MRR Optimization of parameters of powder‑mixed EDM From statistical results optimum parameters were Ton = 20 μs, IP = 5 A, servo voltage = 5 V, powder concentration = 10 weight%
[132] Nimonic 90 /Cu Ton, Toff, IP, powder concentration SR, TWR, MRR Optimization of parameters of powder (µ-titanium carbide) ‑ mixed EDM Grey relational analysis based optimum parameters were Ton = 30 μs, Toff = 2 μs, IP = 20 A, powder concentration = 4 g/L
[133] Nimonic C263/Mo Ton, Toff, IP, voltage SR, MRR, cycle time Optimization of the WEDM process Ton and Toff most influencing parameters; optimum parameter for MRR were Ton = 30 μs, Toff = 8 μs, IP = 4 A, voltage = 80 V
[134] Nimonic 80A/ CBN grinding wheel Air pressure, DOC, rotational speed, vibration intensity, stand-off-distance Normal force, tangential force, SR MOO of parameters of ultrasonic-assisted grinding Optimum parameters from the statistical analysis: air pressure = 4 bar, DOC = 49.10 μm, rotational speed = 2198.02 RPM, vibration intensity = 56.85%, stand-off-distance = 52.99 mm

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