Experimental Modeling to Facilitate Removal of Inclusion Contaminants from the Contact Surface in Transversal Extrusion Processes

• Autorzy: Skorulski G. , Piwnik J. , Hościło B.
• Języki publikacji: EN

Abstrakty

EN

The paper presents experimental optimization of geometrical conditions regarding the shape of billet’s end pieces in the extrusion process of aluminum alloys. The experiments were performed using appropriately pre-treated plasticine as a substitute material. A special test stand was built using a Plexiglass die in order to make it possible to conduct observations and measurements of the modeled contamination surface. To find the best solution, a great number of shape variants of the billets and of their heating temperatures were experimentally analyzed. An attempt was made to find such a solution that could not only resolve the issue of the removal of contaminants from the contact surface of the pre- heated billets but also develop the least complicated technology of billet fabrication. The test results show how to develop the design process and production technology and also offer advice how to improve the quality of the produced profiles. Finally the authors recommend such a shape for the billets that will ensure effective removal of contaminants from the contact surfaces.

Słowa kluczowe

EN

innovative foundry technologies; innovative foundry materials; extrusion; aluminium alloys; experimental modelling; optimal shape; inclusion; contaminants

PL

innowacyjne technologie odlewnicze; materiały innowacyjne; stopy aluminium; wyciskanie; modelowanie eksperymentalne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2014
• Tom: Vol. 14, iss. 1 spec.
• Strony: 209--212
• Opis fizyczny: Bibliogr. 15 poz., fot., rys.

Twórcy

autor

Skorulski G.

• Chair of Production Engineering, Białystok University of Technology, Wiejska St. 45C, 15-351 Białystok, Poland

autor

Piwnik J.

• Chair of Production Engineering, Białystok University of Technology, Wiejska St. 45C, 15-351 Białystok, Poland

autor

Hościło B.

• Chair of Production Engineering, Białystok University of Technology, Wiejska St. 45C, 15-351 Białystok, Poland

Bibliografia

• [1] Akeret, R. (1972). Properties of Pressure Welds in Extruded Aluminium Alloy Sections. Journal of the Institute of Metals, 100, 202-208.
• [2] Akeret, R. (1992). Extrusion Welds – Quality Aspects are Now Center Stage. Proceedings of 5th International Aluminium Extrusion Technology Seminar ET’92, Chicago, I, 319-336.
• [3] Giljdengorn, M. S. et al. (1975). Extrusion of Hollow Aluminium Sections with Welds. Moscow: Metalurgija (in Russian).
• [4] Shestakov N. A., Subich V. N., Shukshin A. V. (2013). Structure Formation of Copper with Reverse Extrusion. Metallurgist, 57(7-8), 639-646.
• [5] Laferrere A., Parson N., Zhou X., Thompson G. (2013). Effect of microstructure on the corrosion behaviour of extruded heat exchanger aluminium alloys, Surface and Interface Analysis, Special Issue: Aluminium Surface Science and Technology, 45(10), 1597–1603. DOI: 10.1002/sia.5282.
• [6] Laue, K. and Stenger, H. (1976). Extrusion. Dusseldorf: Aluminium-Verlag GmbH.
• [7] Misiolek, W. Z., Kelly, R. M. (1992). Dead Metal Zones in Extrusion of Complex Shapes. Proceedings of 5th International Aluminium Extrusion Technology Seminar ET’92, Chicago, I, 315-318.
• [8] Valberg, H. and Groenseth R. A. (1993). Deformation and Metal Flow when Extruding Hollow Aluminium Profiles. Int. J. Mat. & Prod. Techn., 8(1), 1-22.
• [9] Beygelzimer Y., Reshetov A., Synkov S., Prokof’eva O., Kulagin R. (2009). Kinematics of metal flow during twist extrusion investigated with a new experimental method, Journal of materials processing technology, 209, 3650–3656.
• [10] Karadogan C., Grueebler R., Hora P. (2010). A new cone-friction test for evaluating friction phenomena in extrusion processes, Key Engineering Materials. 424, 161-166.
• [11] Hirt G., Kopp R. (2009). Thixoforming: Semi-solid Metal Processing, Wiley: VCH.
• [12] Piwnik J., Patejuk A.: (2006). Energetistic criterion of longitudinal welding in hot extrusion of aluminium alloys, Archives of Foundry, 6(18) 161-166 (in Polish).
• [13] Piwnik J., Patejuk A. (2006). Criterion of transversal welding in hot extrusion of aluminium alloys, Archives of Foundry, 6(18) 155-160 (in Polish).
• [14] Piwnik J., Patejuk A. (2006). Die-channel Optimization for Tixoforming Tools, Archives of Foundry, 6(21), 13-18 (in Polish).
• [15] Skorulski G., Piwnik J. (2006). Rheological properties of substitute materials in semi-solid extrusion of aluminium alloys: Proceedings of 22nd Symposium on Experimental Mechanics of Solids, Jachranka, 441-446 (in Polish).