Research of upsetting ratio in forming processes on a three - slides forging press

• Autorzy: Weroński W. S. , Gontarz A. , Pater Z.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The purpose of the presented in this work research was determining the limiting conditions of upsetting in three-slide forging press (TSFP). The free upsetting process and upsetting process in cylindrical impression were analyzed. Design/methodology/approach: The assumed purpose was confirmed in experimental research. For the case of upsetting in cylindrical impression, the research of limiting upsetting coefficients were made for different diameters and impression lengths. Findings: The obtained results showed large variety of limiting upsetting ratio depending on the analyzed impression geometrical parameters. It was stated, that there are 3 phenomena limiting the upsetting process in the die. The main phenomenon is the bar upsetting outside the impression. The upsetting processes in the impression are limited also by bar buckling outside the impression and overlapping inside the impression. Research limitations/implications: The results of research allowed for stating that, besides the process geometrical parameters, friction conditions and type of the formed material influenced the limiting upsetting coefficients in the cylindrical impression. It is purposeful to make the further research determining quantitative and qualitative dependencies between these factors. Practical implications: The obtained results are the basis for designing of forming processes in TSFP in which the upsetting dominates. Especially it considers the elongated forgings and elongated preforms with thickenings. Originality/value: The influence of the impression geometrical parameters on the limiting upsetting coefficients for the case of upsetting in cylindrical impression in TSFP has been analyzed in details. The dependencies, which should be used during designing of upsetting processes in TSFP were determined.

Słowa kluczowe

EN

plastic forming; three-slide forging press; upsetting ratio

PL

formowanie plastyczne; trójsuwakowa prasa kuźnicza

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 409--412
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Weroński W. S.

• The Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland

autor

Gontarz A.

• The Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland

autor

Pater Z.

• The Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland

Bibliografia

• [1] A. Gontarz, Effective forming processes on three-slide forging press, Edited by Lublin Univ. of Technology, Lublin 2005, (in Polish).
• [2] A. Gontarz, Z. Pater, W. Weroński, Head forging aspects of new forming process of screw spike, Journal of Material Processing Technology 153-154C (2004) 735-739.
• [3] W. Weroński, A. Gontarz, Z. Pater, Some aspects of new forming process of screw spike, Key Engineering Materials 233-236 (2003) 407-412.
• [4] A. Gontarz, K. Łukasik, Z. Pater, W. Weroński, Technology of forming and modelling of the manufacturing process of screw spikes, Edited by Lublin Univ. of Technology, Lublin 2003, (in Polish).
• [5] A. Gontarz, W. Weroński, New technology of skrew spike forming, Metal Plastic Forming 3 (2003) 17-20.
• [6] Z. Pater, Theoretical and experimental analysis of cross wedge rolling process, International Journal of Machine Tools & Manufacture 40 (2000) 49-63.
• [7] Z. Pater, W. Weroński, J. Kazanecki, A. Gontarz, Study of the process stability of cross wedge rolling, Journal of Materials Processing Technology 92-93 (1999) 458-462.
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• [9] Z. Pater, A. Gontarz, W. Weroński, New method of thread rolling, Journal of Material Processing Technology 153-154C (2004) 721-727.
• [10] Z. Pater, Finite element analysis of cross wedge rolling, Journal of Materials Processing Technology 173 (2006) 201-208.
• [11] Z. Pater, J. Kazanecki, A. Gontarz, Simulation of Axial-Symmetrical Bar Upsetting Process Executed in View of Further Application in Cross Rolling Process Analyses, Metallurgy and Foundry Engineering 23 (1997) 45-50.
• [12] Z. Pater, A. Gontarz, W. Weroński, Developments of cross wedge rolling in Poland, Engineering Questions 2 (2004) 174-184, (in Russian).
• [13] M.I. Gökler, H. Darendeliler, N. Elmaskaya, Analysis of tapered preforms in cold upsetting, International Journal of Machine Tools & Manufacture 39 (1999) 1-16.
• [14] P. Wasiunyk, Die forging, WNT, Warsaw, 1987, (in Polish).
• [15] M.W. Storozev, Forging and pressing of steel. Masinostroenie, Moscow, 2, 1968, (in Russian).