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| Effect of Rolls Surface Roughness on the Hot-Dip Galvanized Coating |
| CHEN Li-zhang,SHI Jun-feng,ZHANG Guo-tang |
| Carbon Steel Strip Plant of Jiuquan Iron and Steel Co., Jiayuguan 735100, Gansu, China |
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Abstract The pock flaws on the surface of the hot-dip galvanized coating will not only affect its appearance, but also the employing properties of the hot-dip zinc-coated sheets and coils, the pock flaws were observed and analyzed by SEM and energy spectroscopy; meanwhile the surface roughness of the entry loop rolls and delivery loop rolls were measured. Results indicated that the pock flaws were caused by the excessive surface roughness of the rolls which injured the coating. And the zinc particle will cause the pock flaws. These defects could be decreased by polishing and cleaning the rolls surface.
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Received: 27 June 2011
Published: 09 October 2011
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Corresponding Authors:
Li-Zhang LiChen
E-mail: chen_lizhang@163.com
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2011, Vol. 29 
