The new forging process of a wheel hub drop forging

• Autorzy: Gontarz A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The main purpose of the research was working out a new flashless forming process of wheel hub forging in three-slide forging press (TSFP). It was assumed that the new process would be more effective than the forging processes applied in typical forging machines. Design/methodology/approach: The designing of the new process was based on the simulation by finite element method with the assumption of 3D state of strain. Calculations were made mainly for the analysis of the material flow kinematics and the process loads parameters. Experimental research were also made determining the dependency of clamping load in the function of forming load. On the basis of the analysis, the forming process of a wheel hub drop forging on the TSFP was worked out. Findings: The results of research confirmed the possibility of flashless forming process of wheel hub forging in TSFP with axial cavities. The main parameters limiting the forming processes of wheel hub forgings are: permissible upsetting ratio and reciprocal relation of forming and clamping forces. Research limitations/implications: The further research within the range of determining force parameters for different types of material and schemata of forming in TSFP were considered as purposeful. The works dealing with analysis of forming processes of different types of products in order to classify drop forgings possible to form in this press will be examined. Practical implications: The comparison of the new forming process with the forging process on hammer showed majority of advantages which include: decrease of time and energy, decrease of drop forging weight and machining, decrease of material consumption. Originality/value: The new process of wheel hub forging forming with axial cavities was worked out. The parameters important during designing of forming processes in TSFP were provided. The relations between forces of forming tools were also determined.

Słowa kluczowe

EN

plastic forming; wheel hub; drop forging; three-slide forging press

PL

kształtowanie plastyczne; piasta koła; kucie matrycowe; prasa kuźnicza trójsuwakowa

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 18, nr 1-2
• Strony: 363--366
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Gontarz A.

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

Bibliografia

• [1] A. Gontarz, W. Weroński, Forging of aluminium alloys. Technological and theoretical aspects, Edited by Lublin Univ. of Technology, Lublin 2001 (in Polish).
• [2] H. Yoshimura, K. Tanaka, Precision forging of aluminium and steel, Journal of Materials Processing Technology 69 (1997) 90-94.
• [3] N. Bay, Cold forming of aluminium-state of the art, Journal of Materials Processing Technology 71 (1997) 76-90.
• [4] W. Weroński, A. Gontarz, Z. Pater, The reasons for structural defects arising in forgings of aluminium alloys analysed using the finite element method, Journal of Materials Processing Technology 92-93 (1999) 50–53.
• [5] W. Weroński, A. Gontarz, Influence of deformation parameters on grain size of AlSi1Mg alloy in forging, Journal of Materials Processing Technology 138 (2003) 196-200.
• [6] A. Forcellese, F. Gabrielli, Warm forging of aluminium alloys: a new approach for time compression of the forging sequence, International Journal of Machine Tools and Manufacture 40 (2000) 1285-1297.
• [7] R. Develay, Aspects Métallurgiques de la Transormation et de la Mise en Œuvre des Alliages d’Aluminium de Forge et de Matriçage. Aptitude a la Deformation par Forgeage et Matriçage, Metaux Deformation 80 (1983) 35-43.
• [8] A. Gontarz, Effective forming processes on three-slide forging press, Edited by Lublin Univ. of Technology, Lublin 2005, (in Polish).
• [9] M.I. Gökler, H. Darendeliler, N. Elmaskaya, Analysis of tapered preforms in cold upsetting, International Journal of Machine Tools & Manufacture 39 (1999) 1-16.
• [10] W. Weroński, A. Gontarz, Z. Pater, Some Aspects of New Forming Process of Screw Spike, Key Engineering Materials 233-236 (2003) 407-412.
• [11] 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.
• [12] W. Weroński, A. Gontarz, Z. Pater, Analysis of the Drop Forging of a Piston Using Slip-Line Fields and FEM, Int. Journal of Mechanical Science 39 (1997) 211-215.
• [13] Z. Pater, Finite element analysis of cross wedge rolling, Journal of Materials Processing Technology 173 (2006) 201-208.
• [14] 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.