Deformation Characteristics in Radially Extruded Tubular Parts

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Radially extruded tubular components are adopted for the deformation analysis by rigid-plastic finite element method. FE Simulations were conducted to investigate the influence of different geometric parameters and process condition, such as the ratio between inner and outer diameter of tubular components, gap height, die corner radius and friction factor, on metal flow into radial direction. The results of the simulations are discussed in terms of separation length, defined as the length that the material flow is separated away from the die in gap height, and maximum force requirements for the radial forming process. Furthermore the pressure distributions exerted on the die-wall interfaces and deformation pattern was shown to obtain the features in producing sound radial extruded components. Finally some guidelines for basic design data in the radial extrusion process due to this simulation work might be drawn up.

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Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

4203-4206

Citation:

H. J. Choi et al., "Deformation Characteristics in Radially Extruded Tubular Parts", Materials Science Forum, Vols. 475-479, pp. 4203-4206, 2005

Online since:

January 2005

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$38.00

[1] Sun, Qiang: Automatic Process Planning and Evaluation for Cold Extrusion of Component (UMI, Dissertation, 1997), p.155.

[2] W. Schätzle: Wire Vol. 34, No. 2 (1984), p.71.

[3] B.D. Ko, D.J. Kim, S.H. Lee and B.B. Hwang: J. of Mater. Process. Tech. Vol. 113 (2001), p.109.

[4] B.B. Hwang: Metals and Materials International Vol. 5, No. 1 (1999), p.85.

[5] S.W. Choi and Y.S. Lee: Metals and Materials International Vol. 8, No. 1 (2002), p.15.

[6] M. Arentoft, H. Bjerregaard, C.B. Andersen and T. Wanheim: J. Mater. Process. Tech. Vol. 75 (1998), p.122.

[7] B. Andersen and C.B. Andersen: Radial extrusion of tubular components, MM 91. 27, M. Sc. Thesis, Institute of Manufacturing Engineering, Technical University of Denmark, (1991).

[8] W. Schätzle: Radial extrusion of flanges on steel cylindrical workpieces (in German), Technical Report 93, Institute for Metal Forming, University of Stuttgart, Springer, Berlin, (1987).

[9] S. Kobayashi, S.I. Oh and T. Altan: Metal Forming and the Finite-Element Method (Oxford University Press, New York, USA, 1989).

[10] C.H. Lee and S. Kobayashi: J. Eng. Ind. Trans. ASME Vol. 95 (1973), p.865.

[11] S.I. Oh, G.D. Lahoi and T. Altan: Proc. of NAMRC. IX (State college, Pennsylvania, 1981). 1. 0 1. 5 2. 0 2. 5 3. 0 3. 5 4. 0 1. 5 2. 0 2. 5 3. 0 3. 5 4. 0 4. 5 Die corner radius (mm) Separation height (mm) s = 2. 0 Di/Do = 0. 4 s = 4. 0 Di/Do = 0. 4 s = 2. 0 Di/Do = 0. 5 s = 4. 0 Di/Do = 0. 5 s = 2. 0 Di/Do = 0. 6 s = 4. 0 Di/Do = 0. 6 Fig. 5 Effect of gap height on separation height.

DOI: https://doi.org/10.11606/t.43.1993.tde-23082013-141347