锻压技术

铟镍合金特种条带冲压成形分析与模具设计

英文标题：Analysis on stamping of special strap and die design for indium nickel alloys

作者：何平毛建中宋建力

分类号：TG386.2

出版年,卷(期):页码：2017,42(4):43-50

摘要：

铟镍合金用于核燃料组件中定位格架特种条带的制造。针对铟镍合金材料价格昂贵、厚度较薄以及特种条带本身窄长等特点，利用CAE软件模拟冲压成形过程，快速预测冲制过程中条带的回弹、破裂、起皱等变化，为条带冲制用模具的设计提供参考依据。首先研究材料冲压特性；然后分析条带特征，确定冲制工艺方案；最后进行条带冲压成形有限元仿真分析，根据仿真结果优化模具的结构设计。结果表明：厚度为0.2667 mm的铟镍合金料带的冲压适应性较好，仿真冲压件模型没有破裂和起皱的趋势，条带刚凸高度回弹量较大，经过回弹补偿后，最终成形高度接近公称尺寸。依据CAE分析结果优化设计出的模具调试情况良好，能够满足特种条带的冲制加工。

Indium nickel alloys are used in manufacturing special strap of nuclear fuel component orientation framework. According to the characteristics, such as the expensive price of indium nickel alloys, the thinner thickness and the long and narrow special strap, its stamping process was simulated by CAE software, and the rapid predictions on changes of springback, rupture and wrinkling were provided as references for the die design. Firstly, the material stamping features were researched, and then the characteristics of special strap were analyzed to determine the coining process. Finally, the strap stamping process was analyzed by finite element simulation, and the die structure was optimized according to the results of simulation. The results show that the indium nickel alloy strap with 0.2667 mm thickness is of better stamping adaptability without the trend of fracture and wrinkling. However, the springback amount of special strap rigid dimple height is large. After springback compensation, the forming height is close to the nominal dimension eventually. Thus, the die designed by the results of CAE analysis is debugged well, and it can satisfy the requirements of special strap coining processing.

基金项目：

国家科技重大专项子项（2013ZX06004009）

何平（1993-），男，硕士研究生 E-mail：hp4713@163.com 通讯作者：毛建中（1963-），男，博士，教授 E-mail：maojianzhong66@163.com

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