Characteristic Analysis and Comprehensive Control for the Horizontal Stripes of High-Grade Automotive Panels in Continuous Annealing

Zhenhua Bai, Xiaodong Shi, Yanzhi Shen, Hongxin Si, Li Zhou, Shunbing Yu

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DOI: 10.4236/eng.2011.32012                

Abstract

As to the horizontal stripes defect which exist on the surface of the high-grade automotive panels in continuous annealing process, an effective comprehensive control method is proposed on the basis of full consideration of the equipment and technological features of continuous annealing line. With five field tests as basis, the generation mechanism of the defect was analysised in detail and the comprehensive control measures were put forward. According to actual situation, a detailed technical plan was worked out .Then the relevant technologies were applied to a 1850 continuous annealing line. The statistics shows that this program acquired good effects. The incidence of horizontal stripes defect decreased from 100% to 2.78%. Meanwhile, the surface quality of strip also improved effectively, which created a larger economic benefit.

Keywords

High-Grade Automotive Panels, Continuous Annealing, Horizontal Stripes, Furnace Roller, Surface Quality

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	J. Zhong, H. Z. Yan, J. Duan, L. J. Xu, W. H. Wang and P. L. Chen, “Industrial Experiments and Findings on Chatter Marks of Steel Strip,” The Chinese Journal of Nonferrous Metals, Vol. 10, No. 2, 2000, pp. 291-296.
[2]	F. X. Hou, J. Zhang, J. G. Cao and X. L. Shi, “Review of Chatter Studies in Cold Rolling,” Journal of Iron and Steel Research, Vol. 19, No. 10, 2007, pp. 6-10.
[3]	F. X. Hou, J. Zhang, X. L. Shi, J. Q. Xie, C. Wang and F. Hu, “Research on the Forming Reason and Control of Chatter Marks on Backup Roll of Temper Mill,” Metallurgical Equipment, No. 158, 2006, pp. 37-40.
[4]	E. J. Robert and Q. Quan, “Chatter Dynamics in Sheet Rolling,” International Journal of Mechanical Sciences, Vol. 36, No. 7, 1994, pp. 617-630. doi:10.1016/0020- 7403(94)90017-5
[5]	Y. T. Wang, Y. Zang, D. P. Wu and Q. Qin, “Studies on the Cause of Vibration of CSP Rolling Mill,” Iron and Steel, Vol. 42, No. 2, 2008, pp. 68-73.
[6]	F. Li, K. J. Wang, Y. Y. Li and T. Y. Deng, “Cause Analysis and Control of Vibration Marks on Thin Steel Strip during Cold Rolling,” Heavy Machinery, Vol. 23, No. 1, 2009, pp. 32-35.
[7]	P. L. Chen and Z. J. Wang, “Cause and Control of Chatter Marks on Steel Strip Surface,” Iron and Steel, Vol. 41, No. 5, 2006, pp. 49-52. doi:10.1016/S1006-706X(06) 60077-0
[8]	Y. L. Wang, Y. G. Wang and S. B. Guo, “Cause Analysis of Vibration Marks on Cold Strips,” Baosteel Technology, Vol. 38, No. 3, 2007, pp. 24-28.
[9]	Z. L. Xiang, “The Production and Prevention of Vibration Track on the Aluminum Foil Surface,” Light Alloy Fabrication Technology, Vol. 31, No. 5, 2003, pp. 27-28.
[10]	J. J. Gasparic, “Vibration Analysis Identifies the Cause of Mill Chatter,” AISE Year Book, Vol. 12, No. 2, 1991, pp. 27-29.