Advertisement

Friction coefficient between rolling tube and mandrel of full floating mandrel mill

  • Zhi-yi Zhao
  • Jian-xin Xie
  • Xiao-ming He
  • Kai Dong
  • Yong Yu
  • Feng Pan
Article

Abstract

In the process of steel tube production, continuous tube rolling is the foremost forming procedure and the critical step that decides the dimension precision and the surface quality. In the actual production of the ϕ140 mm full floating mandrel mill in Steel Tube Branch in Baosteel, steel T91 was chosen to be the typical sample, self-made rolling force transducer and mandrel velocity testing equipment were used, and a series of comprehensive tests on rolling parameters including the rolling force and mandrel velocity were carried out. After the experiment, the friction state between rolling tube and mandrel was analyzed. The friction coefficient was calculated and the values of 0.033–0.074 in each mill were obtained. The friction coefficient increases obviously along the rolling direction.

Key words

continuous tube rolling rolling force mandrel velocity friction coefficient 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    GONG Yao, ZHOU Guo-ying. Continuous Rolling Pipe [M]. Beijing: Metallurgical Industry Press, 1992 (in Chinese).Google Scholar
  2. 2.
    ZHANG Pi-jun, LU Yu-qiu. Investigation on the “Stomach” in the Tube Rolled by Mandrel Mill [J]. Iron and Steel, 1995, 30(2): 37 (in Chinese).Google Scholar
  3. 3.
    LAN Xing-chang, LIU Hong-min, LIAN Jian-chuang. Effect of Mandrel Moving Speed and Mandrel Friction on Continuous Seamless-Tube Rolling Process [J]. Iron and Steel, 1994, 29 (9): 28 (in Chinese).Google Scholar
  4. 4.
    Baines K. Lead as a Model Material to Simulate Mandrel Rolling of Hot Steel Tube [J]. Journal of Materials Processing Technology, 2001, 118(1): 422.CrossRefGoogle Scholar
  5. 5.
    WANG Xian-jin, XU Shu-cheng. Theory of Continuous Rolling Pipe [M]. Beijing: Metallurgical Industry Press, 2005 (in Chinese).Google Scholar
  6. 6.
    WANG Bei-ming. Overseas Development of Continuous Tube Rolling [M]. Beijing: Metallurgical Industry Press, 1978 (in Chinese).Google Scholar
  7. 7.
    Dobrucki W, Sobkowiak P. Laboratory Investigation of the Continuous Seamless Tube Rolling Process (Mandrel Mill Process) Using Models [J]. Journal of Mechanical Working Technology, 1989, 19(3): 285.CrossRefGoogle Scholar

Copyright information

© China Iron and Steel Research Institute Group 2009

Authors and Affiliations

  • Zhi-yi Zhao
    • 1
  • Jian-xin Xie
    • 1
  • Xiao-ming He
    • 2
  • Kai Dong
    • 1
  • Yong Yu
    • 2
  • Feng Pan
    • 2
  1. 1.School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijingChina
  2. 2.Baoshan Iron and Steel Co LtdShanghaiChina

Personalised recommendations