Fast shape prediction method for six-high cold rolling mill
WANG Dong-cheng1,2，ZHANG Wei1，WANG Zhi-jie1，LIU Hong-min1,2
（1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling， Yanshan University，Qinhuangdao 066004， Hebei， China 2. State Key Laboratory of Metastable Materials Science and Technology，Yanshan University， Qinhuangdao 066004， Hebei， China ）
Abstract：Compared with the shape prediction of the four-high mill，there are more unknowns obout the six-high mill，and the calculation speed is slower. Therefore，the model coupling method is extended to the six-high mill，and the linear equations of the strip plastic deformation models and the elastic deformation model of roll system are established. Considering the input parameters of flatness problems usually does not include the no-load roll gap value，a new linear equation is proposed according to the average thickness of the strip at exit. The value of the no-load roll gap is incorporated into the unknown quantity. Therefore，the applicability of the model coupling method is improved. Two calculation examples show that，when applied to six-high mill，the calculation results of model coupling method are in well agreement with the calculation results of relaxation factor method，but it can increase the calculation speed by about 100 times.
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2016, Vol. 51 
