锻压技术

基于正交试验的锆合金薄板带材冲压工艺参数优化

英文标题：Optimization on stamping process parameters for zirconium alloy sheet strip based on orthogonal experiment

作者：邓振鹏周惦武蒋朋松武丹花

单位：湖南大学

分类号：TG386.42

出版年,卷(期):页码：2019,44(9):12-16

摘要：

为降低锆合金薄板带材冲压试件的破裂率和提高试件成形质量，基于Dynaform仿真分析平台和正交试验设计方法，将最大减薄率、最大主应变和安全裕度作为评价指标，研究了冲压速度、压边力、摩擦系数和凸凹模间隙等工艺参数对冲压试件成形质量的影响规律。结果表明：影响锆合金冲压的工艺因素中，冲压速度和压边力影响较小，摩擦系数影响较大，凸凹模间隙影响显著；采用优化后的工艺参数方案，最大减薄率降低22.2%，最大主应变减小14.7%，安全裕度提高1.5%；冲压试件成形过程中以拉延和胀形为主，通过正交试验方法对冲压工艺参数进行优化设计，可有效降低锆合金薄板带材冲压试件的破裂率。

In order to reduce the fracture rate and improve the forming quality of stamping specimen for zirconium alloy sheet strip, the influence law of process parameters including stamping speed, blank holder force, friction coefficient and gap between punch and die on the forming quality of parts was analyzed by simulation analysis platform Dynaform and orthogonal experiment with the evaluation indexes containing the maximum thinning rate, the maximum principal strain and safety margin. The results show that among the process factors affecting the stamping of zirconium alloy, the influence of punching speed and blank holder force is small, the friction coefficient has a great influence, and the influence of the gap between punch and die is significantin. With the optimized process parameters，the maximum thinning rate decreases by 22.2%, the maximum principal strain decreases by 14.7%, and the safety margin increases by 1.5%. Drawing and bulging are the main forming process of stamping specimen, and the fracture rate of the stamping specimens for zirconium alloy sheet strip is effectively reduced by the orthogonal experiment to optimize the design of the stamping process parameters.

基金项目：

国家科技重大专项课题（2017ZX06002005）

邓振鹏（1995-），男，硕士研究生 E-mail：dengzhenp@qq.com 通讯作者：周惦武（1971-），男，博士，教授 E-mail：hnudwzhou@sina.com

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