High Precision Outlet Temperature Control Methods of Ultra Fast Cooling for X80 Hot-Rolled Strips

doi:10.3969/j.issn.1005-3026.2015.10.014

Journal of Northeastern University:Natural Science ›› 2015, Vol. 36 ›› Issue (10): 1431-1435.DOI: 10.3969/j.issn.1005-3026.2015.10.014

• Materials & Metallurgy • Previous Articles Next Articles

High Precision Outlet Temperature Control Methods of Ultra Fast Cooling for X80 Hot-Rolled Strips

LI Xu-dong¹， YUAN Guo¹， JIANG Xiao²， WANG Guo-dong¹

1. State Key Laboratory of Rolling & Automation， Northeastern University， Shenyang 110819， China; 2. Shougang Qiangang Company， Qianan 064400， China.

Received:2014-03-07 Revised:2014-03-07 Online:2015-10-15 Published:2015-09-29
Contact: LI Xu-dong
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Abstract

Abstract: According to the rolling process of X80 pipeline steels and the basic theories of heat transfer， a cooling control model of ultra-fast cooling (UFC) was established. A UFC control strategy of X80 pipeline steel was developed by simulating the temperature field of UFC process for the steel strip. The results showed that the uniform mode starting initial configuration and the use of forward additional strategies were benefited for the high UFC control precision and low temperature deviation between the steel centre and surface. To deal with influences of the technological condition fluctuations， an adaptive system of UFC was developed to correct temperature deviation in real-time and that between steel coils at UFC outlet. A satisfied result was achieved in field practice， which provided technology supports for the implementation of controlled cooling process.

Key words: control precision of temperature, hot-rolled strips, ultra-fast cooling (UFC), control strategy, adaptive system

CLC Number:

TG335.11

LI Xu-dong， YUAN Guo， JIANG Xiao， WANG Guo-dong. High Precision Outlet Temperature Control Methods of Ultra Fast Cooling for X80 Hot-Rolled Strips[J]. Journal of Northeastern University:Natural Science, 2015, 36(10): 1431-1435.

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High Precision Outlet Temperature Control Methods of Ultra Fast Cooling for X80 Hot-Rolled Strips

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