Roll System Deformation And Rolling Shape Control Optimization

Along with our country demand for thin plate and strip of growing,requirements for the production will be increased.the shape control and transverse thickness error are important indicator of product quality plate and strip,shape control optimization is one of the key technologies in advanced technology Rolling.In order to obtain high-quality plate and strip,requirements for shape control and transverse thickness error with high accuracy,but the shape control and transverse thickness error of thin plate and strip by the traditional 2-h mill,4-h or 6-h mill is difficult to meet the demand,for stainless steel which is difficult to deform as well as high accuracy wide and thin strip are usually produced by multi-roll mill.In order to further improve the shape control and transverse thickness error of multi-roll mill,it is import to study for the force and deformation between rolls and roller shape optimized design.12-h mill with 1400mm mainly produces thin thickness tolerances of demanding strip and thin strip,.in order to effectively improve the ability to control the shape and transverse thickness error of thin strip.Need to know the actual rolling process,the contact stress distribution between rolls and rolls elastic deformation.Which can effectively calculate the actual rolling load gap and rolling out of transverse thickness error and the shape control,therefore,it has an important guiding significance to optimized shape control and transverse thickness error of rolled Production by 12-h mill with 1400mm by an accurate description of the 12-h mill with 1400mm of contact stress and load distribution Since the stress distribution of the roll contact surface is uneven,there is no theoretical solution,and by a single numerical or experimental mechanics methods are not sufficient to accurately solve this problem.Photoelawticity analysis Mechanical experiments can effectively analyze 4-h mill and 6-h HC mill contact stress.According to the similarity principle,This article applying 3-D Photoelasticity freezing and slicing analysis derived the distribution of roller model contact stress.And draw the actual stress distribution in accordance with the similarity principle.Experimental results basically in line with the actual.On this basis,apply the general finite element software MSC.Marc to simulate 12-h mill with 1400mm during rolling stress distribution between the rolls,Thus to provide the basis for study to improve optimized roller shape,it has an important guiding significance to optimized shape control and transverse thickness error of rolled Production by 12-h mill with 1400mm.