Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Development of Technique Predicting of the Wear of DCI Roll Using Carbon Steel in Hot Rod Rolling Process

탄소강 선재 압연공정의 DCI 롤 마멸 예측 기술의 개발

  • 김동환 (부산대학교 정밀정형 및 금형가공 연구소) ;
  • 김병민 (부산대학교 기계공학부) ;
  • 이영석 (포항종합제철(주) 기술연구소) ;
  • 유선준 (포항종합제철(주) 기술연구소) ;
  • 주웅용
  • Published : 2002.09.01
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Abstract

The objective of this study is to predict the roll wear in hot rod rolling process. In this study hot rod rolling process for round and oval passes has been investigated. In order to predict the roll wear, the wear model is reformulated as an incremental form and then wear depth of roll is calculated at each deformation step on contact area using the results of finite element analysis, such as relative sliding velocity and normal pressure at contact area. Archard's wear model was applied to predict the roll wear. To know the thermal softening of DCI (Ductile Cast Iron) roll according to operating conditions, high temperature micro hardness test is executed and a new wear model has been proposed by considering the thermal softening of DCI roll expressed in terms of the main tempering parameter curve. 3D wear program developed in this study might be used for adjusting the gap of rolls to set up a suitable rolling schedule for keeping dimensional tolerance of the product.

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References

  1. Sachs, G., 1961, 'Roll Wear in Finishing Trains of Hot Strip Mills,' Iron and Steel Engineer, Vol, 38, pp. 71-92
  2. Williams, R.V. and Boxall, G. M., 1965, 'Roll Surface Deterioration in Hot Strip Mills,' J. of Iron and Steel Inst., Apr., pp. 369-377
  3. Kihara, J., 1983, 'Roll Wear in Hot Strip Mill,' Iron and Steel, pp. 62-69
  4. Ohnuki, A., 1987, 'Wear and Deterioration of Rolling Roll and Procedure of Anti-Wear,' J of Japan Soc. Lubr. Eng., Vol. 32, pp. 621-626
  5. Park, J. W., Lee, H.C. and Lee, S., 1999, 'Composition, Microstructure, Hardness, and Wear Properties of High-Speed Steel Rolls,' Metall. Mater. Trans. A, Vol. 30 A, pp. 399-409 https://doi.org/10.1007/s11661-999-0329-9
  6. Rogberg, R., 1990, 'Experience Gained on the 5-Stand Cold Rolling Mill at SSAB with a 6-High Stand using CVC Technology,' Metall. Plant Tech. Int., 13, pp.58-67
  7. Klimenko, V. M., 1986, 'Mathematical Model of Wear of Work and Back-Up Rolls during the Interaction in Four-High Stands,' Steel in The USSR, Vol. 16, pp. 427-429
  8. Wusatowski, Z., 1969, Fundamentals of Rolling, Pergamon Press, London, pp. 146-202
  9. Lundberg, S. E., 1993, 'A New High-Temperature Test Rig for Optimization of Materials for Hot-Rolling Rolls,' J. of Mat. Pro. Tech., Vol. 36, pp. 273-301 https://doi.org/10.1016/0924-0136(93)90035-5
  10. Bae, W. B., Park, H. D. and Song, G. H., 1995, 'Analysis of the Rolling Contact Fatigue for Work Roll in Finishing Mill of Hot Strip Rolling,' J. of KSME, Vol. 19, No. 1, pp. 292-300
  11. Archard, J. F., 1953, 'Contacts and Rubbing of Flat Surface,' J. of APPL. Phys., Vol. 24, p. 981 https://doi.org/10.1063/1.1721448
  12. Yuasa, K. and Okamoto, J., 1981, 'Effects of Press Slide Motion on Life of Warm- Forging Dies,' J. of JSTP, Vol. 22, No. 241, pp. 133-138
  13. Kim, T. H., Kim, B. M. and Choi, J. C., 1997, 'Prediction of Die Wear in the Wire in the Wire Drawing Process,' J. of Mat. Pro. Tech., Vol. 65, pp. 11-17 https://doi.org/10.1016/S0924-0136(96)02235-2
  14. Stevens, P. G., Ivens, K. P. and Harper, P., 1971, 'Increasing Work Roll Life by Improved Roll Cooling Practice,' J. of Iron Steel Inst., January, pp, 1-11
  15. Shida, S., 1969, 'Empirical Formula of Flow-Stress of Carbon Steels - Resistance to Deformation of Carbon Steels,' J. of JSTP, Vol. 10, No. 103, pp. 610-617
  16. Altan, T., Oh, S. H. and Gegel, H. L., 1983, Metal Forming: Fundamentals and Forming, American Society For Metals, OH44073
  17. Geleji, A., 1960, Bildsame Formung Der Metalle In Rechung Und Versuch, AKADEMIE-VERLAG GmbH, Berlin