Optimization of Material Removal Rate and Surface Roughness for Micro ECM of Inconel 718 alloy utilizing Grey Relational Technique

AbstractThis paper focuses on investigating the influence of laser power, pulse frequency and scanning speed on material removal rate and surface roughness during CO2 laser surface treatment of alumina ceramics. Pulse frequency and laser power were the significant factors influencing the material removal rate and surface roughness, respectively. Adequate response surface models were established to correlate the laser parameters and the measured responses. Grey relational analysis predicted the optimal responses at 90 W laser power, 5 kHz pulse frequency and 400 mm/s scanning speed. Desirability function based Multi objective optimization results indicated that minimum material removal rate (0.5117 mm3/s) and surface roughness (0.5968 µm) are achieved at 90 W laser power, 5 kHz pulse frequency and 337.37 mm/s scanning speed which were in close agreement with Grey Relational results. Increase in homogeneity and smoothness of the laser treated alumina surface along with formation of micro recast particles away from the laser traverse path were evidenced by the SEM micrographs.

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Material removal rate and surface roughness on machining of Inconel 718 by electrical discharge machine using Taguchi technique

Materials Today Proceedings ◽

10.1016/j.matpr.2020.01.372 ◽

2020 ◽

Vol 27 ◽

pp. 1024-1029

Author(s):

Ch. Shekar ◽

K. Kishore ◽

P. Laxminarayana

Keyword(s):

Surface Roughness ◽

Material Removal Rate ◽

Inconel 718 ◽

Electrical Discharge ◽

Material Removal ◽

Removal Rate ◽

Electrical Discharge Machine ◽

Taguchi Technique ◽

Discharge Machine

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Comparative Performance In Hard Turning Of AISI 1015 Steel With Carbide Insert Using Orthogonal Array Design And Grey Relational Analysis Under Spray Impingement Cooling And Dry Environment

International Journal of Manufacturing Materials and Mechanical Engineering ◽

10.4018/ijmmme.2014070101 ◽

2014 ◽

Vol 4 (3) ◽

pp. 1-32 ◽

Cited By ~ 3

Author(s):

Purna Chandra Mishra ◽

Dipti Kanta Das ◽

Susant Kumar Sahu

Keyword(s):

Surface Roughness ◽

Material Removal Rate ◽

Orthogonal Array ◽

Material Removal ◽

Removal Rate ◽

Cutting Temperature ◽

Impingement Cooling ◽

Spray Impingement ◽

Grey Relational ◽

Carbide Insert

This study investigates the effects of cutting parameters on surface roughness (Ra), cutting temperature (T0C) at the chip tool interface and the material removal rate (MRR mm3/min) during hard machining of AISI 1015 (43 HRC) steel using carbide insert under dry and spray impingement cooling environment. A combined technique using orthogonal array and analysis of variance (ANOVA) was employed to investigate the contribution of spindle speed, feed rate, depth of cut and air pressure on responses. Utilization of IR camera is been effective to calculate the temperature at the interface of workpiece and the tool. It is observed that with spray impingement cooling, cutting performance improves compared to dry cutting. The predicted multi response optimization setting (N3-f1-d1-P2) ensures minimization of surface roughness, cutting temperature and maximization of material removal rate. Finally optimal result was validated by confirmatory test and the improvement in grey relational grade was found to be 0.288.

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