Numerical simulation and experimental study for the die forging process of a high-speed railway brake disc hub
With the aim of manufacturing a near-net shape forging product of a brake disk hub for the high-speed railway,the die forging process was designed and optimized in this study.Firstly,based on the measured stress-strain curves at different strain rates and the thermal-physical parameters of 40CrA steel,a finite element model for the forging process of a high-speed railway brake disc hub was established.Then,the temperature,stress and strain fields were studied and analyzed at the pre-forging and the finial-forging stages.Besides,in order to trace the stress and strain evolution,five points at different positions were chosen on the billet,and the comparison of the state conditions was made among these points.The results have demonstrated that the product can be well formed by an elaborately designed three-stage forging process,which may reduce the metal machine allowance and the producing cost effectively.Finally,an industrial trial was made and a machined product with sound quality was obtained.
High-speed railway Disc hub Forging Simulation Stress-strain
Mingyue SUN Bin XU Long ZHANG Dianzhong LI
Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang Liaoning 110016,China
国际会议
沈阳
英文
561-567
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）