Paper Title:
Research on Design Method of Polygonal Roll Pass for Stretch Reduced Seamless Tubes
  Abstract

the aid of commercially available software MSC.SuperForm, a 3-D finite element model has been established to simulate the rolling process of steel tubes on the stretch reducing mill (SRM) with group centralized differential drive in certain factories. A special effort was made to analyze the fluctuation of transverse wall thickness uniformity. It was found that the wall thickness of each stand was accumulated in the original pass 50°~60° along the circumferential direction, which caused the formation of the inner hexagon defects and worsen. In view of this, this paper proposes a modified roll pass design method which uses the interactive technology of CAD graph curve and MATLAB equation. By means of decreasing the lateral curvature of roll pass contour curve to enlarge the contact length between the tube and groove, also the rolling process using the new pass system were simulated and analyzed. The results indicate that the design of such polygonal roll pass can be effective in improving the inner hexagon defects.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
1614-1617
DOI
10.4028/www.scientific.net/MSF.654-656.1614
Citation
S. Z. Li, H. Y. Bao, Z. C. Zhang, Y. H. Li, G. M. Long, "Research on Design Method of Polygonal Roll Pass for Stretch Reduced Seamless Tubes", Materials Science Forum, Vols. 654-656, pp. 1614-1617, 2010
Online since
June 2010
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$32.00
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