Subsurface Rolling Contact Fatigue Damage Distribution of Backup Roll After Periodic Dressing
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In this paper, subsurface rolling contact fatigue damage distribution of backup rolls after used one time and periodic dressing are theoretically analyzed. The theoretical model established is verified by experiments test on ring samples and dissection part cut from backup rolls used in production. The results reveal that the subsurface damage of ring samples and dissection parts characterized by hardness test is consistence well with the distribution predicted by theoretical model. The maximum subsurface damage of backup rolls gradually moves toward the surface and the spalling of backup rolls can be prevented if suitable dressing amount be selected.
KeywordsRolling contact fatigue Backup roll Hardness Periodic dressing
This work was sponsored by the Technology Centre of Baoshan Iron & Steel Co., Ltd and subsidized by the Natural Science Foundation of China “Study on reliability modeling and simulation of mechanical structure of aero engine” (Grant No. 51335003). The authors are grateful to the staffs of Rolls Lab of Baoshan Iron & Steel Co., Ltd.
- 1.K.K. Singh, R.S. Verma, Hot strip mm backup roll spalling-reasons and remedies, AIS Tech 2006 Proceedings, pp. 291–297, 2006Google Scholar
- 3.B.M. Kapadia, K.W. Marsden, Spalling behavior of back-up roll materials. 39th Mechanical Working and Steel Processing Conference, pp. 349–386, 1997Google Scholar
- 4.A.J. Liddle, K. Shinozuka, T. Nagamatsu, Backup roll maintenance for preventing spalling accidents. SEAISI Q (Malaysia) 27(1), 48–64 (1998)Google Scholar
- 10.Y. Ohkomori, C. Sakae, Y. Murakami, Mode II crack growth analysis of spalling behavior for strip mill backup roll. 42nd Mechanical Working and Steel Processing Conference, pp. 723–729, 2000Google Scholar
- 11.D. Peng, L.I. Youguo, K.M. Liang et al., Optimization of preventive grinding of backup roll against contact fatigue cracking. J. Iron Steel Res Int. 12(3), 28–33 (2005)Google Scholar
- 12.B. Jalalahmadi, A New Voronoi Finite Element Fatigue Damage Model, Purdue University, 2010Google Scholar
- 13.N. Raje, Statistical Numerical Modeling of Subsurface Initiated Spalling in Bearing Contacts, Purdue University, 2008Google Scholar