Experimental Investigation and Optimization of Response Variables in WEDM of Inconel - 718

2nd International Manufacturing Engineering Conference; 3rd Asia-Pacific Conference on Manufacturing Systems

Karidkar, S.S.^1 ; Dabade, U.A.^1

Department of Mechanical Engineering, Walchand College of Engineering, Sangli, Maharashtra

416 415, India^1

关键词: Grey relational analyses (GRA);    Grey relational analysis;    Inconel-718;    Kerf width;    Multi-objective optimization techniques;    Optimal machining parameters;    WEDM;    Wire electrical discharge machining;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/114/1/012121/pdf
DOI  :  10.1088/1757-899X/114/1/012121

来源: IOP

【 摘 要 】

Effective utilisation of Wire Electrical Discharge Machining (WEDM) technology is challenge for modern manufacturing industries. Day by day new materials with high strengths and capabilities are being developed to fulfil the customers need. Inconel - 718 is similar kind of material which is extensively used in aerospace applications, such as gas turbine, rocket motors, and spacecraft as well as in nuclear reactors and pumps etc. This paper deals with the experimental investigation of optimal machining parameters in WEDM for Surface Roughness, Kerf Width and Dimensional Deviation using DoE such as Taguchi methodology, L9orthogonal array. By keeping peak current constant at 70 A, the effect of other process parameters on above response variables were analysed. Obtained experimental results were statistically analysed using Minitab-16 software. Analysis of Variance (ANOVA) shows pulse on time as the most influential parameter followed by wire tension whereas spark gap set voltage is observed to be non-influencing parameter. Multi-objective optimization technique, Grey Relational Analysis (GRA), shows optimal machining parameters such as pulse on time 108 Machine unit, spark gap set voltage 50 V and wire tension 12 gm for optimal response variables considered for the experimental analysis.