Author(s)

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

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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.

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

Z. Bai, X. Shi, Y. Shen, H. Si, L. Zhou and S. Yu, "Characteristic Analysis and Comprehensive Control for the Horizontal Stripes of High-Grade Automotive Panels in Continuous Annealing," Engineering, Vol. 3 No. 2, 2011, pp. 97-104. doi: 10.4236/eng.2011.32012.