Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Roll Gap Set-up to Compensate Thickness Variation at Top-end in Plate Rolling

후판 압연시 선단부 두께편차 보상을 위한 롤갭 설정에 관한 연구

  • 임홍섭 (부산대학교 기계공학부 / 정밀정형 및 금형가공연구센터) ;
  • 주병돈 (부산대학교 기계공학부 / 정밀정형 및 금형가공연구센터) ;
  • 이건엽 (부산대학교 기계공학부 / 정밀정형 및 금형가공연구센터) ;
  • 서재형 (POSCO 기술연구소) ;
  • 문영훈 (부산대학교 기계공학부)
  • Published : 2009.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

The roll gap set-up in the finishing mill is one of the most important technologies in the hot plate rolling process. As the target thickness can be obtained by the correct set-up of the roll gap, improving the roll gap set-up technology is very critical for plate thickness accuracy. The main cause of thickness variation in hot plate mills is the non-uniform temperature distribution along the length of the slab. The objective of this study is to adjust the roll gap set-up for the thickness accuracy of plate in hot rolling process considering top-end temperature drop. Therefore this study has concentrated on determining the correct amounts of thickness variation according to top-end temperature drop and roll gap to compensate thickness variation. The control method of roll gap set-up which can improve the thickness accuracy was proposed. The off-line simulation of compensated roll gap significantly decreases top-end thickness variation.

Keywords

References

  1. V. Panjkovic, 2007, Model for prediction of strip temperature in hot strip still mill, Applied Thermal Engineering, Vol. 27, pp. 2404-2414 https://doi.org/10.1016/j.applthermaleng.2007.03.009
  2. S. Serajzadeh, A. K. Taheri, F. Mucciardi, 2002, Prediction of temperature distribution in the hot rolling of slabs, Modeling and Simulation In Materials Science and Engineering, Vol. 10, pp. 185-203 https://doi.org/10.1088/0965-0393/10/2/306
  3. S. M. Hwang, C. G. Sun, S. R. Ryoo, W. J. Kwak, 2002, An integrated FE process model for precision analysis of thermo-mechanical behaviors of rolls and strip in hot strip rolling, Computer Methods in Allied Mechanics and Engineering, Vol. 191, pp. 4015-4033 https://doi.org/10.1016/S0045-7825(02)00298-0
  4. V. B. Ginzburg, High-Quality Steel Rolling Theory and Practice, Marcel Dekker, 1993
  5. Y. H. Moon, J. J. Yi, 1997, Improvement of roll-gap set-up accuracy using a modified mill stiffness from gaugemeter diagrams, Journal of Materials Processing Technology, Vol. 70, pp. 194-197 https://doi.org/10.1016/S0924-0136(97)02917-8
  6. Y. M. Hwang, H. H. Hsu, 1999, An investigation into the plastic deformation behavior at the roll gap during plate rolling, Journal of Materials Processing Technology, Vol. 88, pp. 97-104 https://doi.org/10.1016/S0924-0136(98)00390-2
  7. J. H. Song, D. Y. Kim, J. J. Park, 1997, Prediction of rolling force for hot rolling by finite element method, Proceeding of The Korean Society Mechanical Engineers 1997 Spring Annual Meeting, pp. 583- 587
  8. W. L. Roberts, Flat processing of steel, Marcel Dekker, 1988