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Bending analysis and control of rolled plate during snake hot rolling

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Abstract

In order to study the bending behavior of aluminum alloy 7050 thick plate during snake hot rolling, several coupled thermo-mechanical finite element (FE) models were established. Effects of different initial thicknesses, pass reductions, speed ratios and offset distances on the bending value of the plate were analyzed. ‘Quasi smooth plate’ and optimum offset distance were defined and quasi smooth plate could be acquired by adjusting offset distance, and then bending control equation was fitted. The results show that bending value of the plate as well as the extent of the increase grows with the increase of pass reduction and decrease of initial thickness; the bending value firstly increases and then keeps steady with the ascending speed ratio; the bending value can be reduced by enlarging the offset distance. The optimum offset distance varies for different rolling parameters and it is augmented with the increase of pass reduction and speed ratio and the decrease of initial thickness. A proper offset distance for different rolling parameters can be calculated by the bending control equation and this equation can be a guidance to acquire a quasi smooth plate. The FEM results agree well with experimental results.

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Authors and Affiliations

  1. State Key Laboratory of High Performance Complex Manufacturing (Central South University), Changsha, 410083, China

    Tao Zhang  (张涛), Yun-xin Wu  (吴运新), Hai Gong  (龚海), Xi-zhao Zheng  (郑细昭) & Shao-song Jiang  (蒋绍松)

  2. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Tao Zhang  (张涛), Yun-xin Wu  (吴运新), Hai Gong  (龚海), Xi-zhao Zheng  (郑细昭) & Shao-song Jiang  (蒋绍松)

  3. School of Materials Science and Engineering, Central South University, Changsha, 410083, China

    Hai Gong  (龚海)

Authors
  1. Tao Zhang  (张涛)
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  2. Yun-xin Wu  (吴运新)
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  3. Hai Gong  (龚海)
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  4. Xi-zhao Zheng  (郑细昭)
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  5. Shao-song Jiang  (蒋绍松)
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Corresponding author

Correspondence to Yun-xin Wu  (吴运新).

Additional information

Foundation item: Projects(2012CB619505, 2010CB731703) supported by the National Basic Research Program of China; Project(CX2013B065) supported by Hunan Provincial Innovation Foundation for Postgraduate, China; Project(51405520) supported by the National Natural Science Foundation of China; Project(zzyjkt2013-06B) supported by the State Key Laboratory of High Performance Complex Manufacturing (Central South University), China

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Zhang, T., Wu, Yx., Gong, H. et al. Bending analysis and control of rolled plate during snake hot rolling. J. Cent. South Univ. 22, 2463–2469 (2015). https://doi.org/10.1007/s11771-015-2774-5

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  • DOI: https://doi.org/10.1007/s11771-015-2774-5

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