PHYSICAL MODELLING OF THE ZIRCONIUM ALLOY TUBE PILGER ROLLING PROCESS

1 DYJA Henryk
Co-authors:
1 KAWAŁEK Anna 2 OZHMEGOV Kirill 1 SAWICKI Sylwester 1 LABER Konrad
Institutions:
1 Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Institute for Plastic Working and Safety Engineering, Al. Armii Krajowej 19, 42-200 Czestochowa, Poland,e-mail: dyja.henryk@wip.pcz.pl
2 National University of Science and Technology "MISIS" (MISIS), Leninskiy pr. 4, 119049 Moscow, Russia, pdss@misis.ru
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
1701-1707
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
20 views / 5 downloads
Abstract

The paper presents the results of investigation concerned with the inner surface quality of Zr-1% Nb alloy tubes produced on a KPW-type pilger rolling mill with an elongation factor of = 3.9. In order to analyze the influence of applied velocities and deformations on the variations of the flow stress σp values of the investigated alloy, an experiment by testing programme was carried out in industrial conditions and the physical modelling of the rolling process was performed. For the physical modelling of the investigated process, the metallurgical process simulator GLEEBLE 3800 was employed. The relationships σp= σp (ε,) have been obtained for the conditions of both intermittent and continuous cold deformation of the examined alloy and recommendations for the distribution of stress across the rolling gap have been given.

Keywords: Pilger rolling, zirconium alloy, tube inner surface defects, flow stress, physical modelling
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