Research on deformation and microstructure during tube vertical extrusion process
In this paper, a finite element simulation of ultrathick seamless tube vertical extrusion was performed by using Deform software. Some experiments of the forming process with different extrusion ratio were completed, and the forming force in different processes was measured and the microstructure of the material has been studied. According to the numerical simulation results, the material flow traits, stress distribution, and the evolvement of the extrusion force have been analyzed, which is consistent with those of the experiments. That the forming force increases with the increase of the extrusion ratio was tested by the simulation and experiments, while the materials microstructure can be improved with the heavy deformation. As a result, the machine with high capacity should be selected. In this paper, the extrusion process with the deformation ratio bigger than 9 can not complete by using 12000 kN press machine. So, both the deformation parameters and the machines ability should be considered during technique optimization design in practice.
parameters optimization forming force vertical extrusion
LIU Guihua BIAN Yi PENG Chong MA Xiaohui ZHONG Zhiping
Beijing Research Institute of Mechanical & Electrical Technology,Beijing 100083,China
国际会议
The 12th Asian Symposium on Precision Forging 第12届亚洲精密锻造学术研讨会 ASPF2012
苏州
英文
182-185
2012-10-21（万方平台首次上网日期，不代表论文的发表时间）