Materials Transactions Online

Materials Transactions, Vol.58 No.04 (2017) pp.623-628
© 2017 The Japan Society for Technology of Plasticity

Influence of Dog-Bone Width on End Profile in Plan View Pattern Control Method in Plate Rolling

Masayuki Horie1, Kenji Hirata1, Junichi Tateno1 and Naoki Nakata1

1Steel Research Laboratory, JFE Steel Corp., Fukuyama 721-8510, Japan

A plan view pattern control method for plate rolling called the Mizushima Automatic Plan View Pattern Control System (MAS) or Dog Bone Rolling (DBR) was developed. In this method, the slab is given a non-uniform thickness profile in the width direction to obtain non-uniform elongation at following flat rolling. In order to make the plate more rectangular under various rolling conditions, prediction of elongation at following flat rolling is necessary. In this research, the influence of the width of the dog-bone (overly thick part at the slab width edge) on the fish-tail length (over-elongation at the slab end) is investigated. The fish-tail length increases as the dog-bone width increases and the dog-bone width ratio decreases. These phenomena are related to the following behavior of the restriction of excessive elongation in the dog-bone because of existence of unrolled volume before roll gap entrance: As the dog-bone width increases and the dog-bone width ratio decreases, the working length of restricting stress increases. Hence, restricting stress is released earlier and the rolling length for fish-tail formation increases. As a result, the fish-tail length increases. Therefore, in prediction of the plan view pattern, not only the dog-bone thickness, but also the dog-bone width and dog-bone width ratio should be considered.

This Paper was Originally Published in Japanese in J. JSTP 57 (2016) 347-352.


(Received 2016/05/11; Accepted 2017/01/05; Published 2017/03/25)

Keywords: rolling, plate rolling, deformation behavior, model simulation, FEM, plan view pattern control, dog-bone width, crop length, mizushima automatic plan view pattern control system (MAS), dog bone rolling (DBR)

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  1. H. Suzuki: Atsuen Hyakuwa, (Youkendo, Tokyo, 2000) p.48.
  2. M. Takumi, Y. Naba, K. Omata, S. Tanimoto and H. Tsukamoto: Proc. Int. Conf. Steel Rolling (1980) 331-343.
  3. J.H. Ruan, L.W. Zhang, S.D. Gu, W.B. He and S.H. Chen: Ironmaking Steelmaking 41 (2014) 656-664.
  4. T. Yanazawa, J. Miyoshi, K. Tsubota, H. Kikugawa, T. Ikeya, S. Isoyama, I. Asahi and K. Baba: Kawasaki Steel Giho 11 (1979) 168-181.
  5. Y. Haga, Y. Ogawa, M. Yamawaki, S. Murakami, T. Matsuo and S. Masuda: Nippon Kokan Tech. Rep. 98 (1983) 13-23.
  6. Y. Zhao, Q. Yang, A. He, X. Wang and Y. Zhang: J. Iron and Steel Research Int. 18 (2011) 26-30.
  7. J. Ruan, L. Zhang, S. Gu and J. Zhang: Int. J. Materials and Product Technology 47 (2013) 103-125.
  8. K. Hirata, M. Horie, Y. Takashima and T. Udagawa: Proc. 2002 Spring Conf. Jpn. Soc. Technol. Plast., (2002) pp. 227-228.
  9. S. Sasaji, K. Kutsuwa, A. Horibe, Y. Nohara, T. Yamada and K. Watanabe: Tetsu-to-Hagané 67 (1981) 2395-2404.
  10. M. Nishizaki, I. Kokubo, H. Hayakawa, H. Kawatani, M. Fukuda and Y. Yoshima: Tetsu-to-Hagané 67 (1981) 2405-2411.
  11. H. Furukawa, I. Ueda, K. Otake and N. Sakamoto: Proc. 7th Int. Conf. Steel Rolling, (1998) pp. 538-588.
  12. M.S. Chun and Y.H. Moon: Steel Res. 72 (2001) 17-23.
  13. D. Yun, D. Lee, J. Kim and S. Hwang: ISIJ Int. 52 (2012) 1109-1117.
  14. J.H. Ruan, L.W. Zhang, Z.G. Wang, T. Wang, Y.R. Li and Z.Q. Hao: Ironmaking Steelmaking 42 (2015) 585-593.


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