Abstract In the present investigation, investment casting (IC) has been combined with the electromagnetic stirring (EMS) process. The process parameters are chosen on the basis of literature review on IC and EMS processes and these parameters are shell preheat temperature, stirring current, stirring time and pouring temperature. The responses are linear shrinkage, volumetric shrinkage and tensile strength of the investment cast parts. The experiments were conducted as per Taguchi's L 9 orthogonal array (OA). As the optimal condition determined for each response was different, grey-fuzzy method was used to combine individual objective functions into a single objective function so as to form a common optimal setting for all the chosen responses. Further, confirmative experiments were done at the obtained common optimal condition to validate the adopted approach in enhancing the quality of the investment cast parts.
[1]
Pradeep Kumar Jha,et al.
Multi-characteristic optimization of wax patterns in the investment casting process using grey–fuzzy logic
,
2013
.
[2]
W. D. Griffiths,et al.
The effect of electromagnetic stirring during solidification on the structure of Al-Si alloys
,
1996
.
[3]
K. Chiang,et al.
Optimum design parameters of Pin-Fin heat sink using the grey-fuzzy logic based on the orthogonal arrays ☆
,
2006
.
[4]
C. L. Lin,et al.
The use of grey-fuzzy logic for the optimization of the manufacturing process
,
2005
.
[5]
J. Deng,et al.
Introduction to Grey system theory
,
1989
.