Numerical Investigations of Welding Conditions during Extrusion of 2024 Alloy through Porthole Dies

Abstract:

In the work, numerical calculations of extrusion process of 2024 alloy through porthole dies were performed. The DEFORM 3D program based on Finite Element Method was used. The way of metal flow, distributions of stresses as well as temperature level within the welding chamber were predicted for different geometry of porthole die. Particularly, different height, width, and shape of the welding chamber were adopted in calculations. The calculations allowed predicting both hydrostatic pressure and temperature levels as well their distributions in the welding region providing the best welding conditions for the alloy tested.

• Periodical: Key Engineering Materials (Volume 491)
• Pages: 205-213
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.491.205
• Online since: September 2011
• Authors: Dariusz Lesniak, Artur Rękas, W. Libura, Józef Zasadziński
• Keywords: AlCuMg Alloy, Extrusion, FEM Analysis, Porthole Die, Welding Conditions

References

[1] K. Laue, H. Stenger, Extrusion – Process, Machinery, Tooling, ASM, Metals Park, (1981).

[2] P. Saha, Aluminum Extrusion Technology, ASM International, Ohio, (2000).

[3] J. Wantuchowski, J. Zasadziński, J. Richert: Badania nad zastosowaniem matryc mostkowych w praktyce wyciskania na gorąco aluminium i jego stopów, AGH University of Science and Technology Publications, Metallurgy and Foundry, 438, 59 (1974).

[4] R. Akeret, Extrusion welds – quality aspects are now center stage, Proc. 5th Aluminium Extrusion Technology Seminar ET'92, Chicago, 319-336, (1992).

[5] J. Zasadziński, J. Richert, W. Z. Misiołek, Weld quality in extruded aluminum hollow sections, Light Metal Age, t. 51, nr 4, 8-13, (1993).

[6] H. Valberg, Extrusion Welding in Porthole Die Extrusion, Proc. 6th Int. Aluminum Extrusion Technology Seminar ET'96, vol. II, Chicago 1996, pp.213-224.

[7] L. Donati, L. Tomesani, Seam welds in hollow profile extrusion: process mechanics and product properties, Materials Science Forum, vols. 604-605, 121 – 131, (2009).

DOI: 10.4028/www.scientific.net/msf.604-605.121

[8] I. Duplancic, J. Prgin, Determination of parameters required for joining process in hollow dies, Proc. 6th Int. Aluminum Extrusion Technology Seminar ET'96, Chicago, 225-230, (1996).

[9] M. Plata, J. Piwnik, Theoretical and experimental analysis of seam weld formation in hot extrusion of aluminum alloys, Proc. 7th International Aluminium Extrusion Technology Seminar ET'2000, Chicago, 205-211, (2000).

[10] J. Zasadziński, J. Richert, W. Libura, M. Galanty, D. Leśniak, A. Rękas, Dobór warunków zgrzewania trudno odkształcalnych stopów aluminium przeznaczonych do wyciskania kształtowników na matrycach mostkowo-komorowych, Rudy i Metale, R. 54 2009 nr 3, 148-152, 2009 (in Polish).

DOI: 10.15199/67.2019.4.3

[11] J. Zasadziński, A. Rękas, W. Libura, J. Richert, D. Leśniak, Numerical Analysis of Aluminium Alloys Extrusion Through Porthole Dies, Key Engineering Materials, vol. 424 (2010), pp.105-111.

DOI: 10.4028/www.scientific.net/kem.424.105

[12] L. Donati, L. Tomesani, Evaluation of mew FEM criterion for seam welds quality prediction in aluminum-extruded profiles, Proc. 8th Int. Aluminum Extrusion Technology Seminar, vol. 2, 2004, pp.221-234.

DOI: 10.1016/j.jmatprotec.2004.04.215

[13] R. Akeret, Properties of pressure welds in extruded aluminum alloy sections, Journal of the Institute of Metals, vol. 100, 202-207, (1972).

[14] J. Zasadziński, W. Libura, J. Richert, Prędkość wypływu trudnoodkształcalnych stopów Al podczas wyciskania w temperaturach bliskich temperatury topnienia, Rudy Metale, vol. 50, 2005, nr 12, s. 686-689 (in Polish).

[15] J. Richert, J. Zasadziński, W. Libura, M. Galanty, D. Leśniak, A. Rękas, Sposób i urządzenie do badania zgrzewalności metali i stopów, zwłaszcza stopów aluminium przeznaczonych do wyciskania na matrycach mostkowych, Patent nr P-390 383, AGH Kraków, 2009 (in Polish).

[16] D. Leśniak, M. Bronicki, A. Woźnicki, High-temperature homogenization of AlCuMg alloys for extrusion in T5 temper, Archives of Metallurgy and Materials, vol. 55, issue 2/10, 499-513, (2010).

DOI: 10.2478/v10172-011-0148-z