Simulation Of Forging Process For Railway Lorry Supporting Pedestal

Supporting pedestal, whose product quality and properties have a significant influence on speedup and heavy-load of rail wagon,is the key part of bogie on rail wagon. In recent years, the performance requirements of supporting pedestal was improved with the raised requirements of high-speed and heavy load about rail transport.The supporting pedestal has complex shape and has a structure with high rid and thin wall, it is quite difficult to forming by forging. For the sake of reducing the development cycle and cost of the new product, the thesis adopt numerical simulation to improve the product forging die structure and optimize the forming process.The main research are as follows:The simulation is performed for the forging process of turn K2 supporting pedestal use QFORM-3D simulation software for the first time, the metal flow regulation of blank in the forming process was analyzed. the forging technology and mould structure design of supporting pedestal were optimized with numerical simulation of different forging process. The turn K2 supporting pedestal is taken as the study object, a new forging technology that make the left and right pedestal into one was adopted,and the pilot production of supporting pedestal is performed with the modified structure and the optimized forging technology. The results of the pilot production suggest that adopting the forging technology that two products formed in one die is feasible, the forging technology and die design are reasonable; the property of product is stable and credible. With the research of this thesis, the conclusions are as follows:1、The simulation analysis was performed for the forming process of the supporting pedestal with the three-dimensional simulation software DEFORM for the first time. From the simulation, the forging technological parameters of the supporting pedestal were optimized, and the new forging technology and method that two products formed in one die and left and right supporting pedestal united as one is adopted.2、Through the numerical simulation and analyzed for the different technology of supporting pedestal’s forging process, the forging technology and die structure design of supporting pedestal is optimized. Through the numerical simulation for mould structure designed,the result is prefect.3、The pilot production of the product whose structure and technology have been optimized is performed. The results show that adopting the forging technology that two products formed in one die is feasible, scheme and die design are reasonable, and the property of product is stable and credible.