Numerical Simulation Of Liquid Forging Of Aluminum Alloy Wheels Of Special Car

Liquid forging is a technology of metal manufacturing method combining forging process with casting process, the liquid solidifies under high pressure conditions; it not only can make the part forming, and also improve the mechanical properties of the part. The liquid forging technique involves a series of complex processes, such as, metallurgy,fluid flow,heat transfer,and plastic deformation and so on. How to establish the temperature field during the solidification process is of much importance, it not only can influence how to choose the technological parameters, but also is one of the key factors that can decide the qualities and properties of the part. So, simulating the temperature field of the solidification process is of much significance. With the development of the computer technique, numerical simulation has gets more and more application in forging industry. Numerical simulation can guide and optimize the technological design, shorten the trial-produce period of the product, reduce the cost, insure the product quality and properties.We take use of Pro/E software to set up the three-dimensional part model in this paper, and simulating the solidification process and plastic deformation with the casting software ProCAST and DEFORM^TM-3D software respectively. And use the finite-element method to create the 3D simulating model of the heat transfer process during the solidification of liquid forging, and then deduce the boundary conditions involving the heat-transfer process.Analyzing the simulating results, we got these conclusions: pressures, pressure maintaining time, pouring temperature, mold warm-up temperature can also influence the temperature field distribution. As for the aluminum alloy wheels , it is optimal to choose pressure at 100¹50MPa,pouring temperature at 700⁷20℃, mold warm-up temperature from 200²50℃.Furthermore, simulating the relative density by DEFORM^TM-3D software, we can draw the conclusions: with the augment of the pressure parameter, the relative density of the wheels can be enhanced largely, and using the local load method can improve the properties of the finished–product greatly.