FE Analysis of Spread in Hot Rolling of Large Rings with Different Sizes

Abstract:

How to effectively reduce spread is an important subject in the area of ring rolling. In the paper, a reliable coupled thermo-mechanical three-dimensional (3D) finite element (FE) model for hot rolling of large rings is developed. The relationship between spread and the equivalent shape parameters of the deformation zone is discussed. Variations of spread with relative reduction Rr during hot rolling of titanium alloy large rings with different sizes are analyzed and compared using FE simulation. The main results reveal that (1) the spread in a ring exhibits an axisymmetric distribution after the first revolution of the ring. (2) the peak spread appears in the inside or outside layer of a ring, and the minimum spread is found in the middle layer. (2) as Rr increases, the spread increases and the end-plane quality of the ring reduces.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 558-562
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.558
• Online since: January 2012
• Authors: Min Wang
• Keywords: Hot Ring Rolling, Large Rin, Numerical Simulation, Spread, Titanium Alloy

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