EVALUATION OF THE POSSIBILITY OF DIAMETER REDUCTION IN MT 1020 STEEL TUBES BY ROLLING ON THE WPM-120 COLD PROFILE ECCENTRIC ROLLING MACHINE

1 MIŁEK Tomasz
Co-authors:
2 KOPACZ Zenon
Institutions:
1 Kielce University of Technology, Faculty of Mechatronics and Machine Design, Department of Applied Computer Science and Armament Engineering, Kielce, Poland, EU, tmatm@tu.kielce.pl
2 Institute of Precision Mechanics, Warsaw, Poland, EU, zkopacz@imp.edu.pl
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
377-382
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
180 views / 55 downloads
Abstract

The paper presents experimental results of diameter reduction in tubes with the angle of flare α=300. Tube diameter reduction was performed on the WPM-120 cold profile eccentric rolling machine. In the investigations, AISI MT 1020 (ASTM A513) steel tubes with the relative ratio s0/D=0.09 were used. The appropriate values of the eccentric and feed were chosen for the experiment. The coefficient of necking for the samples was K=D/d=1.46 (where d - smallest diameter in reducing tubes after rolling, D - initial outer tube diameter). The evaluation of the quality of the samples obtained in the experiment was based on the measurements of cylindricity and the wall thickness distribution in the longitudinal section of reducing tubes. The measurements of cylindricity were taken with the ZEISS PRISMO navigator, a coordinate measuring machine. The results obtained in the experiment might be used as guidelines to develop a technological process for manufacturing such type of reducing tubes with the WPM cold rolling method. They could also be helpful while applying the method to industrial practice.

Keywords: cold rolling, reducing tube, WPM-120 cold profile eccentric rolling machine, wall thickness distribution

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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