H13钢阶梯轴径向锻造GFM精锻锻透性有限元仿真

H13钢阶梯轴径向锻造GFM精锻锻透性有限元仿真(中文2600字,英文2300字)
摘要：根据径向锻造原理和GFM精锻机锻打H13钢的工艺参数，采用DEFORM 3D软件对锻造工艺过程进行热模拟。根据径向锻造等效塑性应变、平均应力和平均塑性应变在锻件中的分布研究锻透性。结果表明：锻件中心的等效塑应变总是大于零的，可以取较大的轴向速度。本文采用锻件中心平均应力描述锻件内部静水压力。在锻件的表层下发现压应变层，芯部有拉伸应变芯。这些结果对与锻造操作类似的设计有一定的参考价值。
关键词:径向锻造,锻透性(最终误差),阶梯轴,有限元
中图分类号：TG 311，TG 312 文献标识码：A

Forging Penetration Efficiency of Steel H13 Stepped Shaft            Radial Forging with GFM Forging Machine
Abstract: The numerical thermal mechanical simulation of radial forging process of steel H13 stepped shaft withGFM (Gesellschaft fur Fertigungstechnik and Maschinenbau) forging machine was carried out by three-dimensionalfinite element code DEFORM 3D. According to the effective plastic strain, the mean stress and the mean plasticstrain distribution of the radial forging, the forging penetration efficiency (FPE) was studied throughout eachoperation. The results show that the effective plastic strain in the center of the forging is always greater thanzero for the desirable larger axial drawing velocity. The mean stress in the center of the workpiece is proposed todescribe 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
CLC number: TG 311, TG 312         Document code: A