Transactions of Materials and Heat Treatment

Title：Layout evaluation on grid strip progressive die based on fuzzy synthesis theory

Authors： Yuan Jiajian Mao Jianzhong Lei Congyi Zhang Xiaomin Wang Ben

Unit： Hunan Communication Engineering Polytechnic Hunan University State Nuclear Bao Ti Zirconium Industry Co. Ltd.

KeyWords： grid strip progressive die layout fuzzy synthesis theory comprehensive evaluation

ClassificationCode：TG386

year,vol(issue):pagenumber：2022,47(10):243-249

Abstract：

The grid strip is a key part of components in nuclear fuel assembly. In order to conduct a more objective and quantitative comprehensive evaluation on the progressive die layout scheme for punching grid strip, a multi-level comprehensive evaluation index system was constructed considering the three aspects including product, die and economy according to the industry characteristics and application environment of the grid strip, and based on the fuzzy synthesis theory, a model for evaluating the progressive die layout scheme of the grid strip was established. Then, the original data for comprehensive evaluation was obtained by the finite element simulation analysis (FESA) of the layout, and the quantitative comprehensive evaluation was carried out on the progressive die layout of a certain experimental grid strip. Finally, the feasibility of the optimized layout scheme was verified through the physical punching test. The results show that the comprehensive evaluation model established by the combination of FESA of the layout scheme with the fuzzy synthesis theory can provide low-cost and objective helpful guidance in the layout design stage of the progressive die for the grid strip, and it is beneficial for the better optimization of die design and the improvement of punching quality and efficiency for product.

Funds：

国家科技重大专项（761215007）

袁佳健（1991-），男，硕士，工程师，E-mail：danny66163@163.com；通信作者：毛建中（1963-），男，博士，教授，E-mail：maojianzhong66@163.com

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