Wedge-rolls rolling of hollowed parts

• Autorzy: Pater Z. , Bartnicki J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Presentation of the possibilities of application of a new manufacturing method, called wedge Rolls rolling (WRR) in forming of axi-symmetrical hollowed parts. Design/methodology/approach: The research work was done in a specially designed laboratory rolling mill LUW-2. During the research, hollowed parts from steel were rolled in hot forming conditions. Basic kinematical and force parameters of the process were noticed during rolling. Findings: On the basis of the conducted research it was stated that the WRR method could be used for forming of hollowed parts with the precision compared with the precision obtained in the typical cross wedge rolling processes (CWR). At the same time, it was proved that this method could be used for rolling from billets with the wall thinner than the wall given in the CWR. Research limitations/implications: The research were limited to the wedges with spreading angles within range of β = (5° ÷ 9°), with the constant values of forming angle α = 30° and relative reduction ratio δ = 1.45. In the future, it is planned to analyse the influence of changes of angle α and relative reduction ratio δ on the WRR process. Practical implications: The conducted research can be used for designing of a new industrial method of metal forming of hollowed parts. Originality/value: The innovation of this solution is based on the application of only one wedge for forming. Because of that, the WRR method is cheaper for implementation than used so far CWR processes. This method can be applied mainly in automotive and aviation industries.

Słowa kluczowe

EN

plastic forming; wedge-rolls rolling; hollowed parts; experiment

PL

kształtowanie plastyczne; walcowanie klinowo-rolkowe; wyroby drążone; eksperyment

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 18, nr 1-2
• Strony: 407--410
• Opis fizyczny: Bibliogr. 6 poz., rys., wykr.

Twórcy

autor

Pater Z.

• Department of Computer Modelling & Technology of Metal Forming, The Lublin University of Technology, ul. Nadbystrzycka 36, 20-618 Lublin, Poland

autor

Bartnicki J.

• Department of Computer Modelling & Technology of Metal Forming, The Lublin University of Technology, ul. Nadbystrzycka 36, 20-618 Lublin, Poland

Bibliografia

• [1] J. Bartnicki, Z. Pater.: The aspects of stability in cross - Wedge rolling processes of hollowed shafts, Journal of Material Processing Technology 155-156C, 2004, 1867-1873
• [2] Z. Pater: Cross wedge rolling of axi-symmetrical parts, Ed. Lublin University of Technology, Lublin 2001
• [3] J. Bartnicki, Z. Pater: The influence of tool geometry on the CWR process of hollowed shafts. STEEL-GRIPS Journal of Steel and Related Materials, Suppl. Metal Forming, 2, 2004, 103-107
• [4] A. Danno, T. Tanaka: Hot forming of stepped steel shafts by wedge rolling with three rolls, Journal of Mechanical Working Technology 1984 no. 9, 21-35
• [5] J. Bartnicki, Z. Pater: Numerical simulation of three-rolls cross-wedge rolling of hollowed shaft. Journal of Materials Processing Technology 164-165, 2005, 1154-1159
• [6] Z.Pater: Comparative analysis of wedge rolls rolling schemata,, Obróbka Plastyczna Metali, nr 5, 2004, 13-24