Research Of Improving The Edge Drop Of Strip By Roller Shift And Bend Technology

With the development of industry production, corporation and consumer put a more and more precise demand on the geometry shape of strip. To rolled out high quality sheet, people developed cross-roller, sub-coolin, dumping roll, bending roll, and other shape control technologies to improve the quality of shape. But it takes only the first step in investigating of the edge drop, which reduces the percent of pass. So it is necessary to improve the edge drop of cold rolled sheet. So, the research of this paper is very important to enhance the use rate of cold rolled sheet and control shape of cold rolled sheet.Firstly,introduced the edge drop description of the strip, and then analysed the causes of the edge drop of strip from these aspects: flatten deformation of the roller, bend of the roller, later flow of the strip, and so on. And then introduced three ways to improve edge drop of shrip: the work roll shift ,the bend of work roll and the single taper.Secondly,used finite element analysis software MARC to constructs 3-D FEM simulation solid. In the model, the elastic deformation of work roll,the elastic- plastic deformation of the strip are taken into account.Last of all,used finite element analysis software MARC do some simulation about the work roll shift ,the bend of work roll and the single taper, and study the effect of those ways to the bend deformation and flatten of the system of rollers and the later flow of the strip. Lastly, analyzed the effect of those ways to the edge drop, which afford theory supervise for practice.