Finite Element Method for Step Reduction in Forming Socket Head Screws

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Abstract:

Nowadays, step reduction in the manufacturing process is an important issue because it reduces both the cost and time. The objective of this research is to reduce the steps used in the cold forging process of a socket head screw from 3 steps (existing design) to 2 steps (new design). The commercial FEM (Finite Element Method) software was used for simulating the values of flow line, forging force and die stress, which were then used to determine part quality and tool life. The results have shown that the simulated values of 2-step design are similar to 3-step design.

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Advanced Materials Research (Volumes 622-623)

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107-111

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December 2012

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] Y. Mao: Forging process design for risk reduction, Dissertation for doctor of philosophy, Ohio state university, (2009), p.6.

Google Scholar

[2] ASM Handbook volume 14: Forging and Forming. ASM International, (1993), pp.629-643.

Google Scholar

[3] S. Kobayashi, S.I. Ho and T. Altan: Metal Forming and Finite Element Method, Oxford university press (1989), p.377.

Google Scholar

[4] H.C. Lee, M.A. Saroosh, Y.T. Im, H.S. Kim, I.H. Son and D.L. Lee, Two Dimensional finite element approximation of the hexagonal bolt forming process, Journal of Material Processing Technology, Vol. 201, (2008), pp.19-24.

DOI: 10.1016/j.jmatprotec.2007.11.168

Google Scholar

[5] A. Sabiha and J.A. Nemesb, " Experimental and finite element simulation study of the adiabatic shear band phenomenon in cold heading process, Journal of Materials Processing Technology Vol. 212 (2012) pp.1089-1105.

DOI: 10.1016/j.jmatprotec.2011.12.024

Google Scholar

[6] J. H. Lee, B.S. Kang and J. H. Lee, Process design in multi-stage cold forging by the finite-element method, Journal of Materials Processing Technology Vol. 58 (1996), pp.174-183.

DOI: 10.1016/0924-0136(95)02093-4

Google Scholar

[7] A. Dubois, L. Lazzarotto, L. Dubar and J. Oudin, A multi-step lubricant evaluation strategy for wire drawing–extrusion–cold heading sequence, Journal of Wear, Vol. 249 (2002), p.951–961.

DOI: 10.1016/s0043-1648(01)00830-4

Google Scholar

[8] C. MacCormack and J. Monaghan, 2D and 3D finite element analysis of a three stage forging sequence, Journal of Materials Processing Technology, Vol. 127, (2002), p.48–56.

DOI: 10.1016/s0924-0136(02)00254-6

Google Scholar

[9] N. Asna, On tool stresses in cold heading of fasteners", Journal of Engineering Failure Analysis, Vol. 6, (1999), p.321–335.

DOI: 10.1016/s1350-6307(98)00050-8

Google Scholar

[10] V. Vazquez, D. Hannan and T. Altan, Tool life in cold forging - an example of design improvement to increase service life, Journal of Materials Processing Technology, Vol. 98, (2000), pp.90-96.

DOI: 10.1016/s0924-0136(99)00309-x

Google Scholar

[11] B. Falk, U. Engel and M. Geiger, Estimation of tool life in bulk metal forming based on different failure concepts, Journal of Materials Processing Technology, Vol. 80–81, (1998) p.602–607.

DOI: 10.1016/s0924-0136(98)00168-x

Google Scholar

[12] M.W. Fu, J. Lu and W.L. Chan, Die fatigue life improvement through the rational design of metal-forming system, Journal of Materials Processing Technology, Vol. 209, (2009) p.1074–1084.

DOI: 10.1016/j.jmatprotec.2008.03.016

Google Scholar

[13] M.A. Saroosh, H. -C. Lee, Y. -T. Im, S. -W. Choi and D. -L. Lee, High cycle fatigue life prediction of cold forging tools based on workpiece material property, Journal of Materials Processing Technology, Vol. 191, (2007) p.178–181.

DOI: 10.1016/j.jmatprotec.2007.03.015

Google Scholar

[14] H.C. Lee, M.A. Saroosh, J.H. Song and Y.T. Im, The effect of shrink fitting ratios on tool life in bolt forming processes, Journal of Materials Processing Technology, Vol. 209, (2009) p.3766–3775.

DOI: 10.1016/j.jmatprotec.2008.08.032

Google Scholar

[15] H. V. Johnson: Manufacturing process (second edition), Springer-Verlag Berlin Heidelberg, McGraw-Hill (1984), p.170.

Google Scholar