FEM Analysis Of Rolling Process Of Special Bar Steel During Continuous Rolling

In the current production of bar mill, special steel with specifications of large and quantities of small, dedicated grooves can not be arranged by types of steel, so the rolling of various steel through a set of adjustment to adapt to the pass。Using of the existing pass syetem of plain carbon round bar (or rebar), the bar factory of Wuhan Iron and Steel Company rolled special steel. Because of the limitations of design, there were some problems in the production of special steel,Such as poor surface quality, tolerance range, much scratch and so on, these problems seriously affected the normal production, and caused great economic losses. These are great relationships with the deformation of steel in the grooves in process of rolling. Basing on the existing pass system,The grooves must be the correct analysis and optimization design.The subject was based ANSYS / LS-DYNA finite element analysis platform, for theΦ18 round bar of 45 steel on the technological features of Wuhan Iron and Steel Bars Factory, on the basis of the situation in production, simulation of the temperature in rolling process, and geometric dimensions, and the parameters of the force and torque, on this basis, comparative analysis of the type of metal flow pattern and the stress-strain field in the two different round grooves. Thus provide a reasonable basis for finishing hole. In addition, through the rolling force and torque between the two rack analysis of changes in the state of the heap and pull, and adjust the mill speed, then change the factor of the heap and pull, optimal metal flow in second, so that production process more reasonable and improving product surface quality and dimensional accuracy, and increasing economic efficiency, guiding the actual production.