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| 链轨节锻造数值模拟及模具改进 |
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作者：陈驰1，李朝亮2，陈文琳2（1.安徽合肥汽车锻件有限公司，安徽合肥230009；2.合肥工业大学材料科学与工程学院，安徽合肥230009）
摘要：以某型号链轨节为研究对象，针对其锻造过程中终锻模产生早期失效断裂的问题进行了有限元模拟，发现应力集中是模具发生早期断裂失效的主要原因。根据模拟结果提出了模具的改进方案，重新设计了模具的分模面并增加了模具飞边桥部的高度，对改进后的方案进行了有限元模拟，结果表明，模具改进效果较好，模具最大等效应力由1 380 MPa降至915 MPa，降低了34%，有效减小了模具的应力集中，满足模具的使用要求。
关键词：链轨节；应力集中；模具改进；数值模拟
中图分类号：TG76；TP391.9 文献标识码：B 文章编号：1001-2168（2018）10-0069-05
DOI：10.16787/j.cnki.1001-2168.dmi.2018.10.014
Numerical simulation of forging track link and the die improvement
CHEN Chi1, LI Zhao-liang2, CHEN Wen-lin2 (1.Anhui Hefei Automobile Forging Co., Ltd., Hefei, Anhui 230009, China; 2.School of Material Science and Engineering, Hefei University of Technology, Hefei, Anhui 230009, China)
Abstract: Taking a track link as an example, the finite element simulation of the early failure fracture of the die during the forging process was carried out, and the stress concentration was found to be the main cause. According to the simulation results, the improvement scheme was put forward, and the die surface was redesigned and the height of the flange bridge was increased. The improved scheme was simulated by finite element method and the results showed that the effect of die improvement was good, the maximum equivalent stress of die was reduced from 1380 MPa to 915 MPa, about 34%.
Key words: track link; stress concentration; die improvement; numerical simulation
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