Paper Title:
Influence of Wall Thickness Fluctuation of Pierced Shell on Continuous Tube Rolling Process of Semi-Floating Mandrel Mill
  Abstract

In continuous tube rolling process, wall thickness reduction per stand will be changed due to wall thickness fluctuation of pierced shell caused by piercing process, which results in changes in metal flow conditions and affects force parameters, deformation parameters, especially transverse wall thickness precision of rolled hollow tube. In this paper, with the aid of commercial FE code MSC.SuperForm, the high pressure boiler steel tube continuous rolling process of a typical hollow tube specification 133.0×4.0mm are simulated based on 133 main pass sequence of 89mm 6-stand semi-floating mandrel mill, and force parameters, equivalent plastic strain, transverse wall thickness precision, outline dimension and real roundness of rolled hollow tube are analyzed and compared on the condition of two different wall thicknesses of pierced shell. Analysis results indicate that force parameters increase with wall thickness of pierced shell, maximal rolling force, rolling moment and mandrel axial force increase 10% or so in the first three stands when rolling pierced shell of wall thickness 11.5mm compared to that of wall thickness 10.5mm. When rolling pierced shell of wall thickness 10.5mm, there exist front and back tensions among the third, the fourth and the fifth stands and outline dimension and real roundness of rolled hollow tube is slightly better. However, transverse wall thickness of rolled hollow tube at the bottom of groove is pulled thin obviously.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
2382-2386
DOI
10.4028/www.scientific.net/AMR.189-193.2382
Citation
Y. D. Yin, S. Z. Li, Y. L. Kang, Y. H. Li, G. M. Long, P. A. Deng, "Influence of Wall Thickness Fluctuation of Pierced Shell on Continuous Tube Rolling Process of Semi-Floating Mandrel Mill", Advanced Materials Research, Vols. 189-193, pp. 2382-2386, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Qian Li, Yi Bian, Zhi Ping Zhong, Gui Hua Liu, Ying Chen
Abstract:The cold forging process of large module spur gear with four modules and 59mm breadth is performed by means of numerical simulation method....
2642
Authors: Gui Hua Liu, Zhi Ping Zhong, Yi Bian, Qian Li
Chapter 3: Modeling, Analysis and Simulation
Abstract:The whole precision forging process of spur-gear with large module (module: 4) including warm forging, cold extrusion and cold sizing is...
927
Authors: Shu Hua Zheng, Xue Dao Shu, Wen Fei Peng
Chapter 4: Advanced Machining and Materials Processing Technology
Abstract:High-speed and heavy-load are the targets to pursue over a long period of time in high-speed transportation. The key to solve this problem is...
1071
Authors: Bao Sou Sun, Xue Lei Zeng, Xue Dao Shu, Wen Fei Peng, Pei Sun
Chapter 1: Engineering Design. Theory and Practice
Abstract:One direction of the cross wedge rolling technology is to realize high-efficiency, precise and near-net-shape forming hollow axle with...
673
Authors: R. Kaboli, F. Podlesak, Peter Mayr
Chapter 16: Innovative Joining by Forming Technologies
Abstract:Spin-blind-riveting (SBR) is a newly developed joining process, which...
1457