Determination of the Critical Velocity of Molten Metal Flow in Casting Mould Sprue
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2019 by IJETT Journal|
|Year of Publication : 2019|
|Authors : Francis Inegbedion, John A. Akpobi
|DOI : 10.14445/22315381/IJETT-V67I10P232|
MLA Style: Francis Inegbedion, John A. Akpobi "Determination of the Critical Velocity of Molten Metal Flow in Casting Mould Sprue" International Journal of Engineering Trends and Technology 67.10 (2019):199-205.
APA Style:Francis Inegbedion, John A. Akpobi Papageorgiou, Determination of the Critical Velocity of Molten Metal Flow in Casting Mould Sprue International Journal of Engineering Trends and Technology, 67(10),199-205
Casting is a manufacturing process in which molten metal is poured through a gating system to fill a mould cavity where it solidifies. Variations in casting parameters chosen by different researchers have led to significant variations in casting guidelines. These have forced foundry-men to carry out a number of trial and error runs to create guidelines based on their own experience. This has resulted in defects occurring in casting during the mould filling process. The authors aimed at determining the critical height and critical velocity of molten metal flow in the mould sprue. The continuity equation was used to describe the velocity distribution of the molten metal flow and the finite element method was used for the analysis. The authors established the critical flow velocity of molten metal down the sprue as 2.755 x 103mm/s. The results obtained were compared with the Reynolds number and literature. Various casts were produced and it was observed that sprue height below the critical drop height prevented casting defects.
 E. H. Attar, R.P. Babaei, K. Asgari, P. Davami, “Modelling of air pressure effects in casting moulds”. Journal of Modelling and Simulation in Materials Science and Engineering 13, pp. 903-917, 2005.
 J. Campbell, Materials Solutions Conference on Aluminium Casting Technology,Chicago, 3. 1998
 L. Feng, “Optimized Design of Gating/Riser System in Casting Based on CAD and Simulation Technology”. Submitted to the faculty of the Worchester Polytechnic Institute in partial fulfillment of the requirements for degree of Master of Science in Manufacturing Engineering, (2008)
 V. D. Hutton, “Fundaments of Finite Element Analysis”, 1st Edition, McGraw-Hill Companies, Inc. (2004) pp 293 - 295
 I. Ik-Tae, K. Woo-Seung, L. Kwan-Soo, “A unified analysis of filling and solidification in casting with natural convection” International Journal of Heat and Mass Transfer, 44, pp. 1507 – 1515, 2001
 P. D. Lee, A. Chirazi, D. See, “Modelling micro porosity in Aluminium - Silicon alloys: a review”. Journal of Light Metals, vol. 1, pp. 15-30, 2001.
 B. Mochacki, J. S. Suchy, “Numerical Methods in Computations of Foundry Processes”. Polish Foundrymen’s Technical Association Publishers, Krakow (1995). [
8] B. Ravi. “Computer-aided Casting Design and Simulation”. Short Term Training Program V.N.I.T. Nagpur, July 21, (2009)
 B. Ravi, “Metal Casting”. Computer-Aided Design and Analysis, 4th Edition, Prentice-Hall, New Delhi, India (2005).
 J. N. Reddy, “An Introduction to the Finite Element Method”. Third Edition, International Edition McGraw-Hill Inc. pp. 146 – 147, 441 – 442, 2006.
 B. D. Rohaya,“Design and Analysis of Casted LM6 - TIC in Designing of Production Tooling”,Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka (UTEM) pp. 63 – 69, 2013
 S. R. Singiresu, “The Finite Element Methods in Engineering”, fourth edition, Elsevier Science and Technology Books Publisher (2004).
 L. Sowa, “Model of the Casting Solidification taking into consideration the motion of liquid phase”. Archives of Mechanical technology and Automatization, vol 18, pp.287 – 296, 1998
 L. Sowa, “Numerical Analysis of the Thermal and Fluid Flow Phenomena of the Fluidity test”. Archives of Foundry Engineering, Volume 10 Issue 1, pp. 157 – 160, 2010.
 L. Sowa, A. Bokota, “Numerical Modelling of Thermal and Fluid Flow Phenomena in the Mould Channel”. Archives of Foundry, vol. 7, Issue 4, pp. 165 – 168, 2007.
 L. Sowa, N. Sczygiol, T. Domoilski, A, Bokota, “Simplified Model of Metal Solidification in the Thin Plane Cavity of the Casting Mould”. Archives of Foundry Engineering, Volume 8 special Issue 1, pp. 309 – 312, 2008
 Zhizhong S., Hu H., Chen X., “Numerical Simulation of Gating System parameters of a Magnesium Alloy Casting with Multiple Performance Characteristics”. Journal of Material. Processing Tech., Vol.199, pp.256-264, 2008.
Critical Velocity, Finite Element Method, Continuity Equation, Mould Sprue