한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

  • 제15권1호
  • /
  • Pages.34-41
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  • 2016
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  • 1598-6721(pISSN)
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  • 2288-0771(eISSN)
한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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열간 조압연공정에서 판 캠버 저감을 위한 사이드 가이드 동적설정에 관한 연구

A Study on the Dynamic Setup of a Side Guide to Reduce Bar Camber at the Roughing Train in a Hot Strip Rolling Mill

  • 투고 : 2015.12.08
  • 심사 : 2016.01.21
  • 발행 : 2016.02.29
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초록

Bar camber is a phenomenon in which a material with a deformation gradient across its width is bent in the right or left direction in the roll gap. This paper proposes a dynamic setup approach for a side guide for reducing bar camber. A bar tracking scheme using a rotary encoder was adopted to fix an operation point for the side guide. The guiding pressure was utilized for measuring the actual width of the bar with camber. Based on the accurate position and width of the bar, the side guide was dynamically set and operated at the actual roughing train in a hot strip rolling mill. The amount of camber was reduced notably when the dynamic setup scheme was installed in the side guide. 78% of the bars tested had a camber in the range of ${\pm}20mm$, which was an improvement of 27% in terms of production yield.

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참고문헌

  1. Shiraishi, T., Ibata, H., Mizuta, A., Nomura, S., Yoneda, E. and Hirata, K., "Relation between Camber and Wedge in Flat Rolling under Restrictions of Lateral Movement," ISIJ International, Vol. 31, No. 6, pp. 583-587, 1991. https://doi.org/10.2355/isijinternational.31.583
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  3. Hardy, S. J., Biggs, D. L. and Brown, K. J., "Three-dimensional Hot Rolling Model for Prediction of Camber Generation," Ironmaking and Steelmaking, Vol. 29, No. 4, pp. 245-252, 2002. https://doi.org/10.1179/03019230225004502
  4. Moon, C. H. and Lee, Y., "The Effects of Rolling Method Changes on Productivity in Thick Plate Rolling Process," Journal of Materials Processing Technology, Vol. 210, No. 14, pp. 1844-1851, 2010. https://doi.org/10.1016/j.jmatprotec.2010.06.018
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  6. Cao, J., Liu, S., Zhang, J., Song, P., Yan, T. and Zhou, Y., "ASR Work Roll Shifting Strategy for Schedule-Free Rolling in Hot Wide Strip Mills," Journal of Materials Processing Technology, Vol. 211, No. 11, pp. 1768-1775, 2011. https://doi.org/10.1016/j.jmatprotec.2011.05.025
  7. Rath, S., Singh, A. P., Bhaskar, U., Krishna, B., Santra, B. K., Rai, D. and Neogi, N., "Artificial Neural Network Modeling for Prediction of Roll Force during Plate Rolling Process," Materials and Manufacturing Processes, Vol. 25, No. 1-3, pp. 149-153, 2010. https://doi.org/10.1080/10426910903158249
  8. Vladimir, P., Ronald, G., John, S., Stephen, D., Roberts, S. and Gregory, F., "Causes of Chatter in A Hot Strip Mill: Observations, Qualitative Analyses and Mathematical Modelling," Journal of Materials Processing Technology, Vol. 212, No. 4, pp. 954-961, 2012. https://doi.org/10.1016/j.jmatprotec.2011.12.004
  9. Agarwal, K. and Shivpuri, R., "An On-line Hierarchical Decomposition based Bayesian Model for Quality Prediction during Hot Strip Rolling," ISIJ International, Vol. 52, No. 10, pp. 1862-1871, 2012. https://doi.org/10.2355/isijinternational.52.1862

피인용 문헌

  1. 열간 선재 압연기에서 작업롤 베어링의 외측링 파손에 관한 연구 vol.16, pp.4, 2017, https://doi.org/10.14775/ksmpe.2017.16.4.038