Machining Characteristics and Optimization of Machining Parameters of SKH 57 High-Speed Steel Using Electrical-Discharge Machining Based on Taguchi Method

Lin, Yufeng; Cheng, Chao-Hsu; Su, Bo-Lin; Hwang, Lih Ren

doi:10.1080/03602550600728133

Cited by 100 publications

(38 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The electrode rotational speed majorly affects the MRR, electrode wear rate, and overcut followed by voltage and spark time (Purohit et al 2015). Lin et al (Lin et al 2006) analyzed the material removal and surface roughness on the process parameters during WEDM of SKD11 steel. The process parameters were optimized using back propagation neural network (BPNN)-genetic algorithm (GA) method, and the predicted accuracy BPNN has close relation with the significance of optimum results.…”

Section: Introductionmentioning

confidence: 99%

Parametric optimization of MRR and surface roughness in wire electro discharge machining (WEDM) of D2 steel using Taguchi-based utility approach

Manjaiah

Laubscher

Kumar

et al. 2016

Int J Mech Mater Eng

View full text Add to dashboard Cite

Background: This paper reports the effect of process parameters on material removal rate (MRR) and surface roughness (Ra) in wire electro discharge machining of AISI D2 steel. Findings: The wire electro discharge machining characteristics of AISI D2 steel have been investigated using an orthogonal array of design. The pulse on time and servo voltage are the most significant parameter affecting MRR and surface roughness during WEDM process. The simultaneous performance characteristics MRR and surface roughness was optimized by Taguchi based utility approach. The machined surface hardness is higher than the bulk material hardness due to the repetitive quenching effect and contained various oxides in the surface recast layer. Methods: The experiments were performed by different cutting conditions of pulse on time (T on ), pulse off time (T off ), servo voltage (SV) and wire feed (WF) by keeping work piece thickness constant. Taguchi L 27 orthogonal array of experimental design is employed to conduct the experiments. Multi-objective optimization was performed using Taguchi based utility approach to optimize MRR and Ra. Results: Analysis of means and variance on to signal to noise ratio was performed for determining the optimal parameters. It reveals that the combination of Ton3, Toff1, SV1, WF2 parameter levels is beneficial for maximizing the MRR and minimizing the Ra simultaneously. The results indicated that the pulse on time is the most significant parameter affects the MRR and Ra. Concludions: The melted droplets, solidified debris around the craters, cracks and blow holes were observed on the machined surface for a higher pulse on time and lower servo voltage. Recast layer thickness increased with an increase in pulse on time duration. The machined surface hardness of D2 steel is increased due to the repetitive quenching effect and formation oxides on the machined surface.

show abstract

Section: Introductionmentioning

confidence: 99%

Parametric optimization of MRR and surface roughness in wire electro discharge machining (WEDM) of D2 steel using Taguchi-based utility approach

Manjaiah

Laubscher

Kumar

et al. 2016

Int J Mech Mater Eng

View full text Add to dashboard Cite

show abstract

“…High discharge energy usually caused high TWR (Uhlmann et al, 2005). In EDM of high speed steel and boron carbide (B 4 C), tool wear was found to be proportional to current and inversely proportional to pulse duration (Puertas and Luis, 2004;Lin et al, 2006). It was also found that tool wear showed an optimum peak value while pulse duration had increased (Ozgedik and Cogun, 2006).…”

Section: Tool Wearmentioning

confidence: 81%

“…EDM of boron carbide (B 4 C) showed that R a and R y increased with pulse duration but decreased with current (Puertas and Luis, 2004). On the other hand, EDM of high speed steel showed that with the increase of current, R a increased and with the increase of pulse duration it decreased (Lin et al, 2006). It was suggested to use low conductive or higher resistive dielectric to ensure low R a and R y (Liao et al, 2004).…”

Section: Surface Roughnessmentioning

confidence: 99%

“…With the increase in pulse duration MRR showed a peak and then downfall (Chen and Mahdivian, 2000;Lin et al, 2006;). Increase in discharge energy by discharge voltage or capacitance, resulted in higher MRR (Kim et al, 2005).…”

Section: Materials Removal Ratementioning

confidence: 99%

“…Table 1.1 shows different micro ED milling process parameters. Some researches were conducted to optimize different EDM process parameters for R a , R y , TWR and MRR (Puertas and Luis, 2004;Lin et al, 2006). But almost all of them were on conventional macro EDM.…”

Section: Process Parametersmentioning

confidence: 99%

See 2 more Smart Citations