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| Control technology of complex wave for 4-high temper mill |
| BAI Zhen-hua1,2，LI Tao1,2，CUI Ya-ya1,2，GUO Qian-yong1,2，LIU Ya-xing1,2，LI Xiu-jun3 |
（1. National Engineering Research Center for Equipment and Technology of C.S.R.， Yanshan University， Qinghuangdao 066004， Hebei， China
2. State Key Laboratory of Metastable Materials Science and Technology，Yanshan University， Qinhuangdao 066004， Hebei， China
3. Thin Strip Co.， Ltd.， of Baosteel， Shanghai 200431， China） |
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Abstract In allusion to small reduction， less deformation and friction heat and small roll thermal crown of temper mill， multi-zone cooling is incapable of controlling complex wave defects such as center and double edge composite wave， single rib wave， multi rib wave， center and rib composite wave， edge and rib composite wave. Taking 4-high temper mill as research object， the study presented a set of asymmetrical structure to replace symmetrical structure， changed strip shape control method from traditional 2-dimensional symmetric roll bending(symmetric roll shifting) and roll tilting to 5-dimensional left roll bending， right roll bending， upper roll shifting， bottom roll shifting and roll tilting. On this foundation， the study built a set of suitable complex wave control technologies for 4-high temper mill in order to minimum the difference between actual strip shape and target strip shape. Through parameter optimization of strip shape control for left roll bending， right roll bending， upper roll shifting， bottom roll shifting and roll tilting， this control technology solved effectively the problems of control defect on 4-high temper mill complex wave and made up for the congenital lack of shape control on temper mill which is incapable of using fine control，which provides a set of new method for strip shape-fine control on field temper mill， with further popularization and application value.
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Received: 24 June 2014
Published: 02 February 2015
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2015, Vol. 50 
