Research On Process And Organizational Performance Of Cross Wedge Rolling Of Non-ferrous Metal Aluminum Alloy

Cross wedge rolling (CWR) takes more and more people’s attention as an efficient method for forming the shaft. With the development of automotive lightweight aluminum alloy has been the best choice to replace structural steel for its high-quality performance. Processing technology of steel shaft parts of CWR has tended to improve through the research of domestic and foreign experts and scholars, and the experience accumulation of actual production. But because of the metal structure performance, structure and deformation characteristics of aluminum alloy have a big difference with steel. In the CWR process, rolling deformation is complex, and different materials makes the selection of process parameters is not the same. Therefore, this paper studied aluminum alloy cross wedge rolling process and organizational performance, knowledge of the formation and deformation of rolled aluminum has important significance.This paper described the development of CWR technology and research status aluminum alloy CWR technology.Based on two-roll cross wedge rolling theory, the theory of finite element was used to simulate aluminum alloy rolling process. The application of the finite element theory in shaping rolling forming was described, and this paper pointed out the key technologies of the finite element simulation. The geometric model and finite element simulation model is established, DEFORM-3D is used for finite element simulation.By the DEFORM-3D post-processing method, metal mobility was observed by the grid in the rolling process. Rolling axial flow during deformation of metals was analyzed by the tracking dots on the different sections. By using the method of tracking points, changes in the stress and the strain of the internal of workpiece were observed. Deformation mechanism of the work piece is analyzed.By the method of observing die effects of the load on the workpiece, workpiece suffered radial, tangential and axial rolling force and rolling torque were analyzed with the rolling process, the variation of radial, tangential and axial rolling force and rolling torque in the workpiece deformation process was derived. The physical models under different process parameters were numerical simulation. Changes in the radial, tangential and axial rolling force and rolling torque was observed. The influences of the process parameters were analyzed. In order to prioritize the three main process parameters affect the rolling force were distinguished, this paper used the method dimensionless factors γ and influence coefficient δ. It provided a reference for the design of the dies and the selection of the mill.