Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (7): 979-983.DOI: 10.12068/j.issn.1005-3026.2014.07.015

• Materials & Metallurgy • Previous Articles     Next Articles

Comparison of the Rolling Speed and Water Flow Adjusting on the Finishing Rolling Temperature Control

GONG Dianyao1, CHEN Huaxin1, XU Fang2, XU Jianzhong1   

  1. 1 State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China. 2 Shougang Jingtang Iron & Steel Co. Ltd., Tangshan 063000, China.
  • Received:2013-08-22 Revised:2013-08-22 Online:2014-07-15 Published:2014-04-11
  • Contact: XU Jianzhong
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Abstract: Based on the commission of the finishing rolling temperature control model of some domestic hot strip rolled mill, the principles of the temperature control by using rolling speed and water flow adjusting were introduced respectively. The measured curves of the rolling speed, water flow adjusting and finishing temperature by using the two means as mentioned previously on rolling typical products were compared. Furthermore, the difference of finishing temperatures controlled by using different control means were discussed in detail. At the same time, referring to the tracking principle of cooling control model on runout table, the effect of rolling speed adjusting on the following cooling control after rolling was analyzed. The results showed that more accurate finishing rolling temperature control was obtained by the rolling speed adjusting method than by the water flow adjusting method, however, water flow adjusting helped to get smooth rolling speed curve and was beneficial to promoting the cooling control after rolling.

Key words: hot rolled strips, finishing rolling temperature control, rolling speeds, interstand cooling, cooling after rolling

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