INVESTIGATION OF THE PRECISION OF THE INTERNAL CHANNEL OF HOT-ROLLED PIPES DURING EXPANSION
https://doi.org/10.17073/0368-0797-2015-1-35-38
Abstract
At present, one of the highly demanded types of metal products is steel pipe for constructional purposes. The most important characteristics are its dimensional accuracy and surface fi nish, high level of mechanical properties and operating characteristics. Particular attention is paid to the precision of the internal channel of pipes, because this parameter determines the reliability and cost-effectiveness of their use. One of the most effective ways to increase the precision of the internal channel is pipe expansion by a mandrel. To investigate the accuracy of pipes a program of fi nite element simulation should be used. This has allowed us to investigate the extrafocal expansion at the inlet and outlet of the deformation zone, the inhomogeneity of deformation and the increasing pipe accuracy. The evaluation of these characteristics is an important factor for developing optimal conditions of deformation and tool design high-precision pipes in order to produce in terms of their inner diameter.
About the Authors
A. A. Bogatov
Ural Federal University named after the fi rst President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Dr.Sci., Professor, Head of the Chair “Metal Forming”
D. R. Salikhyanov
Ural Federal University named after the fi rst President of Russia B.N. Yeltsin
Russian Federation
Postgraduate, Assistant
Russian Federation
Postgraduate, Assistant
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Review
For citations:
Bogatov A.A., Salikhyanov D.R. INVESTIGATION OF THE PRECISION OF THE INTERNAL CHANNEL OF HOT-ROLLED PIPES DURING EXPANSION. Izvestiya. Ferrous Metallurgy. 2015;58(1):35-38. (In Russ.) https://doi.org/10.17073/0368-0797-2015-1-35-38
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