Paper Title:
Change of Plastic Hinge Position in Radial Ring Rolling without Guide-Roll
  Abstract

Radial ring rolling is an unsteady plastic deformation process. Internal stress of the ring is foundation of formation of the plastic hinge. The radial wall thickness of ring changes gradually along ring circumferential direction. Theoretical analysis and FE simulation show that: the plastic hinge is not always exactly opposite to the rolling deformation zone in ring rolling process without guide-roll. The plastic hinge position angle β0 is affected by ratio of rolling entrance wall thickness H0 and rate of wall thickness change η. Curve of β0-H0/η is shaped as double U staggered relative to each other. With the H0/η increasing, β0 reduces gradually and approaches to π in the range of H0/η>6.28. H0/η>14.6H0/R2. Only when the rolling process is steady, and H0≈R2, β0 is greater than π, and approximates to π. The β0 fluctuates dramatically when H0/η≈5.71. In some cases, H0/η may fluctuate in 0 to 6.28, leading to the instability of plastic hinge position.

  Info
Periodical
Edited by
Bo Zhao, Yidu Zhang, Guanglin Wang, Hai Zhang, Jianbin Zhang and Feng Jiao
Pages
30-34
DOI
10.4028/www.scientific.net/AMM.42.30
Citation
Y. X. Hao, S. J. Shi, L. Y. Yang, S. W. Yang, "Change of Plastic Hinge Position in Radial Ring Rolling without Guide-Roll", Applied Mechanics and Materials, Vol. 42, pp. 30-34, 2011
Online since
November 2010
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: Rimma Lapovok
Abstract:Equal Channel Angular Extrusion (ECAE) has become a very popular tool for studying the evolution of microstructure and properties under...
37
Authors: Shu Huang, Jian Zhong Zhou, Yi Bin Chen, C.D. Wang, X.D. Yang, Y.C. Dai
Abstract:An appropriate finite element analytical model for laser compound forming (LCF) was established with ABAQUS code, and then some key technical...
3857
Authors: Xu Dong Zhou, Xiang Ru Liu
Chapter 3: Materials Forming, Machining and Joining
Abstract:The researches of non-oriented silicon steel are mainly focused on the effect of main processing parameters on the microstructure and...
1468
Authors: Liang Chu, Li Jun Shi, Yan Bi, Da Sen Bi
Abstract:In this paper, the nosing process of metal tube with a conical die is investigated using the finite element method, and a series of...
1444
Authors: Wei Shin Lin, Bean Yin Lee, Yuan Chuan Hsu, Jui Chang Lin
Chapter 3: Materials Forming, Machining and Joining
Abstract:In multi-wire flat rolling process, the error of the rolled wires in thickness was due to the roller deflection and the spring back of the...
1251