Abstract
Taguchi’s approach to design of experiment was applied to determine the effect of some process parameters on the mechanical properties and microstructures of castings obtained by evaporative pattern casting process. Four process parameters with three levels were selected and used with Taguchi’s method to give nine experimental runs. Casting design system was employed to determine the gating parameters for each of the test castings in the study. The pattern material was polystyrene of density 2 g/cm3. The mechanical property tested where the ultimate tensile strength (UTS), percentage elongation and hardness value. It was observed that castings produced at pouring temperature of 650 °C had fine grains and the highest values of UTS and hardness values. There was a downward trend of these values as the pouring temperature increased from 650 to 700 °C and then to 750 °C. It was established that producing the Al alloy castings at pouring temperature close to 650 °C results in good mechanical properties and microstructures.
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References
Achimovic-Pavlovic ZS (2011) Condition for balancing evaporative pattern-refractory coating-liquid metal-sand system. Assoc Metall Eng Serbia 20:140–146, UDC
Chen X, Penumadu D (2008) Permeability measurement and numerical modeling for refractory porous materials. AFS tractions, America Foundry Society, Schaumburg
Clegg AJ (1991) Precision casting processes. Pergamon Press Plc, England
Dieter GE (1988) Mechanical metallurgy. McGraw-Hill Book Company, London, SI Metric Edition
Isadare DA, Aremo B, Adeoye MO, Olawale JO, Shittu MD (2012) Effect of heat treatment on some mechanical properties of 7075 aluminium alloy. Mater Res 15(6):1–5
Jain PL (1997) Principles of foundry technology. Tata McGraw-Hill Publishing Company Ltd, New Delhi
Kumar S, Kumar P, Shan HS (2006) Parametric optimization of surface roughness castings produced by evaporative pattern casting process. Mater Lett 60:3048–3053
Kumar S, Kumar P, Shan HS (2007) Effects of evaporative pattern casting process parameters on the surface roughness of Al-7% Si alloy castings. J Material Process Technol 182:615–623
Kumar S, Kumar P, Shan HS (2008) Optimization of tensile properties of evaporative pattern casting process through Taguchi’s method. J Mater Process Technol 204:59–69
Kumar S, Kumar P, Shan HS (2009) Characterization of the refractory coating material used in vacuum assisted evaporative pattern casting process. J Mater Process Technol 209:2699–2706
Liu XJ, Bhavnani SH, Overfelt RA (2007) Simulation of EPS foam decomposition in the lost foam casting process. J Mater Process Technol 182:333–342
Omidiji BV (2014) Evaporative pattern casting (EPC) process for production of aluminum - aloy components. Ph.D Thesis, submitted to Federal University of Technology, Minna
Rao PN (2001) Manufacturing technology: foundry, forming and welding, 2nd edn. Tata McGraw-Hill Publishing Company Limited, New Delhi
Trumbulovic L, Acimovic Z, Gulisija Z, Andric L (2004) Correlation of technological parameters and quality of castings obtained by the EPC method. Mater Lett www.elsevier.com/locate/matlet, August 2010
Xuejun L (2005) Experimental and computational study of fluid flow and heat transfer in the lost foam casting process. Ph.D. Dissertation, Auburn University, Alabama
Yadav N, Karunakar DB (2011) Effects of process parameters on mechanical properties of the investment castings produced by using expandable polystyrene pattern. Int J Adv Eng Technol 1(3):9–18
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Omidiji, B.V., Owolabi, H.A. & Khan, R.H. Application of Taguchi’s approach for obtaining mechanical properties and microstructures of evaporative pattern castings. Int J Adv Manuf Technol 79, 461–468 (2015). https://doi.org/10.1007/s00170-015-6856-1
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DOI: https://doi.org/10.1007/s00170-015-6856-1