冷轧热镀锌镀层厚度控制系统的开发与应用

doi:10.13228/j.boyuan.issn0449-749x.20150388

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Abstract For the cold rolling continuous galvanizing line，the control level of the coating thickness has a direct effect on the product quality，the cost and the market competition of hot galvanized sheet. Based on the background of Ansteel continuous galvanizing line，the current study mainly involved the research on the precise control of zinc coating thickness of cold-rolled sheet.The main factor influencing the precision of coating thickness was analyzed by means of the software FLUENT for the numerical simulation in gas-jet wiping process.The key model of coating thickness control system has been built with the adoption of air knife pressure feedforward control and Smith predictive compensation control methods. The coating thickness precise control was realized by adopting the software LABVIEW for the system development. Production results show that the application of the control system reduced the deviation of coating thickness and obtained well control effect. The application of coating thickness automatic control system not only meets the demand of improving product surface quality，but also provides an important significance on cost saving and reducing the zinc raw material consumption .

Received: 31 July 2015 Published: 26 April 2016

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	Articles by authors
	FU Jing
	ZHANG Yan
	YU Jun-Sheng
	QIN Tai-Wei
	HOU Yong-Gang
	XU Han-Bing

Cite this article:

FU Jing,ZHANG Yan,YU Jun-Sheng等. Development and application of coating thickness control system for cold rolling continuous galvanizing line[J]. Iron and Steel, 2016, 51(5): 57-61.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20150388 OR http://www.chinamet.cn/Jweb_gt/EN/Y2016/V51/I5/57

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