Shape And Profile Control Study Of Four-High CVC Hot Strip Mill

With the development of industrial production, the user right to the quality of hot-rolled wide strip has become increasingly demanding, with steel strip to form a measure of the quality of important factors, also become a major domestic iron and steel enterprises in their efforts to pursue product image goals. This paper using equipment ways mainly studied shape and profile control of the four-high CVC hot strip mill of QianGang 2160, analysis the effect of the four-high CVC mill work roll shifting, work roll bending force and strip width to shape and profile, and analyze contaction between rolls to learn factors of rolls flake.This paper first described working principle,advantages and disadvantages of the four-high CVC hot strip mill.Secondly, the ordinary four-high mill rolls deformation mechanical analysis, based on the analysis of four-high CVC mill roll-shaped curve, and also establish the metal lateral movement and the SIMS mathematical models including tension, the preparation of the four-high CVC mill rolls'profile and shape model for the next step analysis calculation tool.Then, the shape study of the four-high CVC hot mill, and analysis of work roll shifting, work roll bending force and strip width on tensile stress influence to provide shape control theoretical basis for the location.Finally, accurate calculation the effect of work roll shifting and work roll bending force, strip width change, the work roll diameter and the backup roll's shape to strip profile, and draw the adjustment range of work roll shifting and work roll bending force to strip profile. The rolls contact pressure maximum lie rolls port, which can be obtained through the use of a special backup roll's shape to improve the distribution of contact pressure between rolls.