Transactions of Materials and Heat Treatment

Title：Forming analysis and FEM simulation of 722 link ring

Authors： WANG Lin 1* ZHOU Jie2 SUN Xiao meng2 CHANG Jiang2 CHANG Gui jing2 QUAN Guo zheng2 (1Shanxi Yuncheng Tractor Factory Yuncheng Shanxi 044000 China 2College of Mechanical Engineering Chongqing University Chongqing 400044 China)

Unit：

KeyWords： link ring fold lean FEM

ClassificationCode：TG316

year,vol(issue):pagenumber：2005,30(1):10-12

Abstract：

Link Ring is the key part of coal mine well, so it is requested to have a very high anti pull and anti-fatigue function Many defects usually appeared in the original forming process, such as enfold and short of materialSo in this paper we uses DEFORM 3D FEM simulation and analysis system, establishes the rigid plasticity finite element model of 722 link ring hot forming processThen its forming process is simulated and analyzed by 3D FEM and the defects are predictedThe original forming process is improved and optimized as there some defectsThrough the simulating, we found that the material flows furiously in the original process of flat bottomed storage, so it is easy to result enfold and short of material condition Based on the simulating results, an improved die is designed to avoid the enfold effectively and can get the qualified forging At the same time, it lowers the depletion of the material, increases the utilization ratio of materialand also because the periphery of the connect skin is thin, it is easy to be resected, so the life time of the die is increased

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Reference：

[1]　周永强,周杰,王梦寒万向节叉热成形过程模拟研究[J]锻压技术,2002,(2):67,30
[2]　汪大年金属塑性成形原理[M]北京:机械工业出版社,1986
[3]　吕炎锻压成形理论与工艺[M]北京:机械工业出版社,1991
[4]　左旭,卫原平,陈军,等复杂体积成形三维有限元仿真的关键技术[J]金属学报,1999,(3):325329

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