J Shanghai Jiaotong Univ Sci

Journal of shanghai Jiaotong University (Science) ›› 2012, Vol. 17 ›› Issue (3): 315-318.doi: 10.1007/s12204-012-1276-y

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Forging Penetration Efficiency of Steel H13 Stepped Shaft Radial Forging with GFM Forging Machine

Forging Penetration Efficiency of Steel H13 Stepped Shaft Radial Forging with GFM Forging Machine

ZHOU Xu-dong1 (周旭东), LIU Xiang-ru2 (刘香茹), XING Jian-bin3 (型建斌)   

  1. (1. School of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China; 2. School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China; 3. Technical Center, Taiyuan Iron and Steel (Group) Co., Ltd., Taiyuan 030024, China)
  2. (1. School of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China; 2. School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471003, Henan, China; 3. Technical Center, Taiyuan Iron and Steel (Group) Co., Ltd., Taiyuan 030024, China)
  • Online:2012-06-30 Published:2012-11-15
  • Contact: ZHOU Xu-dong1 (周旭东) E-mail:syuuzhou@163.com

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Abstract: The numerical thermal mechanical simulation of radial forging process of steel H13 stepped shaft with GFM (Gesellschaft fur Fertigungstechnik undMaschinenbau) forging machine was carried out by three-dimensional finite element code DEFORM 3D. According to the effective plastic strain, the mean stress and the mean plastic strain distribution of the radial forging, the forging penetration efficiency (FPE) was studied throughout each operation. The results show that the effective plastic strain in the center of the forging is always greater than zero for the desirable larger axial drawing velocity. The mean stress in the center of the workpiece is proposed to describe hydrostatic pressure in this paper. There is compressive strain layer beneath the surface of the workpiece to be found, while there is tensile strain core in the center of the workpiece. These results could be a valuable reference for designing the similar forging operations.

Key words: radial forging| forging penetration efficiency (FPE)| stepped shaft| finite element

摘要： The numerical thermal mechanical simulation of radial forging process of steel H13 stepped shaft with GFM (Gesellschaft fur Fertigungstechnik undMaschinenbau) forging machine was carried out by three-dimensional finite element code DEFORM 3D. According to the effective plastic strain, the mean stress and the mean plastic strain distribution of the radial forging, the forging penetration efficiency (FPE) was studied throughout each operation. The results show that the effective plastic strain in the center of the forging is always greater than zero for the desirable larger axial drawing velocity. The mean stress in the center of the workpiece is proposed to describe hydrostatic pressure in this paper. There is compressive strain layer beneath the surface of the workpiece to be found, while there is tensile strain core in the center of the workpiece. These results could be a valuable reference for designing the similar forging operations.

关键词: radial forging| forging penetration efficiency (FPE)| stepped shaft| finite element

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