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Abstract: This work aims to study the springback behaviour of electrogalvanised (EG) steel sheets during the air bending process. Experiments have been conducted to analyse the influence of various parameters such as coating thickness, orientation of the sheet, punch radius, die radius, die opening, punch velocity, and punch travel on springback behaviour. It is established that the springback increases with increasing coating thickness, punch radius, punch travel, die radius, die opening, and punch velocity. The 90° orientation exhibits higher springback than 0° orientation.

[1]ASTM Standard E8, 2008. Standard Test Methods for Tension Testing of Metallic Materials. ASTM International, Pennsylvania, USA.

[2]Bruni, C., Forcellese, A., Gabrielli, F., Simoncini, M., 2006. Air bending of AZ31 magnesium alloy in warm and hot forming conditions. Journal of Materials Processing Technology, 177(1-3):373-376.

[3]Chan, K.C., Wang, S.H., 2001. The effect of a coating on the springback of integrated circuit lead frames. Journal of Materials Processing Technology, 116(2-3):231-234.

[4]de Vin, L.J., 2000. Curvature prediction in air bending of metal sheet. Journal of Materials Processing Technology, 100(1-3):257-261.

[5]de Vin, L.J., 2001. Expected the unexpected, a must for accurate brakeforming. Journal of Materials Processing Technology, 117(1-2):244-248.

[6]Fei, D., Hodgson, P., 2006. Experimental and numerical studies of springback in air v-bending process for cold rolled TRIP steels. Nuclear Engineering and Design, 236(18):1847-1851.

[7]Garcia-Romeu, M.L., Ciurana, J., Ferrer, I., 2007. Springback determination of sheet metals in an air bending process based on an experimental work. Journal of Materials Processing Technology, 191(1-3):174-177.

[8]Gotzinger, M., Kalyanasundaram, S., Hodgson, P., Cardew-Hall, M., Hodgson, P., 2001. A methodology for springback prediction. SAE Transactions, 110:1181-1186.

[9]Gronostajski, J.Z., 1995. Behaviour of coated steel sheets in forming processes. Journal of Materials Processing Technology, 53(1-2):167-176.

[10]Gupta, A.K., Kumar, D.R., 2006. Formability of galvanized interstitial-free steel sheets. Journal of Materials Processing Technology, 172(2):225-237.

[11]Hayashi, H., Nakagawa, T., 1994. Recent trends in sheet metals and their formability in manufacturing automotive panels. Journal of Materials Processing Technology, 46(3-4):455-487. [doi:10.1016/0924-0136(94)90128-7]

[12]Inamdar, M.V., Date, P.P., Sabnis, S.V., 2002. On the effects of geometric parameters on springback in sheets of five materials subjected to air vee bending. Journal of Materials Processing Technology, 123(3):459-463.

[13]Jiang, H.M., Chen, X.P., Wu, C., Li, H.H., 2004. Forming characteristics and mechanical parameter sensitivity study on pre-phosphated electro-galvanized sheet steel. Journal of Materials Processing Technology, 151(1-3):248-254.

[14]Kadkhodayan, M., Zafarparandeh, I., 2008. On the relation of equivalent plastic strain and springback in sheet draw bending. International Journal of Material Forming, 1(S1):141-144.

[15]Kim, J.K., Thomson, P.F., 1990. Friction and stress distribution in coated steel sheet during forming. Journal of Materials Processing Technology, 21(1):29-42.

[16]Kim, J.K., Yu, T.X., 1997. Forming and failure behaviour of coated, laminated and sandwiched sheet metals: a review. Journal of Materials Processing Technology, 63(1-3):33-42.

[17]Kim, S.Y., Choi, W.J., Park, S.Y., 2007. Spring-back characteristics of fiber metal laminate (GLARE) in brake forming process. The International Journal of Advanced Manufacturing Technology, 32(5-6):445-451.

[18]Kurtaran, H., 2008. A novel approach for the prediction of bend allowance in air bending and comparison with other methods. The International Journal of Advanced Manufacturing Technology, 37(5-6):486-495.

[19]Matuszak, A., 2000. Factors influencing friction in steel sheet forming. Journal of Materials Processing Technology, 106(1-3):250-253.

[20]Meinders, T., Konterl, A.W.A., Meijers, S.E., Atzema, E.H., Kappert, H., 2006. A sensitivity analysis on the springback behaviour of the unconstrained bending problem. International Journal of Forming Processes, 9(3):365-402.

[21]Narayanasamy, R., Padmanabhan, P., 2008a. Effects of material orientation on air bending of interstitial free steel sheet. Journal of Manufacturing Engineering, 3(3):163-169.

[22]Narayanasamy, R., Padmanabhan, P., 2008b. Experimental investigations on effect of process parameters during air bending of interstitial free steel sheet. Journal of Manufacturing Engineering, 3(4):248-255.

[23]Narayanasamy, R., Padmanabhan, P., 2009. Application of response surface methodology for predicting bend force during air bending process in interstitial free steel sheet. The International Journal of Advanced Manufacturing Technology, 44(1-2):38-48.

[24]Samuel, M., 2000. Experimental and numerical prediction of springback and side wall curl in U-bendings of anisotropic sheet metals. Journal of Materials Processing Technology, 105(3):382-393.

[25]Shackelford, J.F., 1992. Introduction to Materials Science for Engineers (3rd Ed.). MacMillan Publishing Company, USA.