Abstract：In order to decrease the stiffness difference of both sides of hot strip mill，the key elements affecting the stiffness difference of hot strip mill were analyzed and confirmed. The relatively geometrical position of mills with liner and no-liner were precision measured by laser track instrument. Wearing，lean and uneven of mill liner caused the cross between rolls，which resulted in the big stiffness difference of both mill sides. According to the analysis and study of the metrical data，replacing customization mill liner，grinding infrastructure surface and other measures were put forward to decrease the stiffness difference of both sides of hot strip mill. All stands got different rise in the satisfying rate of the stiffness difference of both sides，and the last stand got up to 88% from 23%. The strip hook bend and cobble piece among finish mill stands decreased evidently after taking above action. And the blocking edge rate in the next working procedure decreased to less than 2.4% from 6.5%. Cobble piece between hot-strip mills decreased to zero during three months from 3 piece per month.
夏小明，李冠华，廖松林，张萃. 带钢热连轧机两侧刚度差的成因分析与对策[J]. 中国冶金, 2017, 27(7): 45-49.
XIA Xiao-ming，LI Guan-hua，LIAO Song-lin，ZHANG Cui. Reason analysis and countermeasure of stiffness difference of both sides of hot strip mill. China Metallurgy, 2017, 27(7): 45-49.
2017, Vol. 27 
