Transactions of Materials and Heat Treatment

Title：Optimization on molding process for DP590 steel/glass fiber composite laminate

Authors： Zhang Bo1 Shi Jinke1 2 Shen Zhi2 Jin Kang1 Guo Ping′an1 Wang Xiaogang1

Unit： 1. China Machinery Industry Technology Research Institute of Precision Forming 2. School of Mechanical Engineering Nanchang Institute of Technology

KeyWords： DP590 steel fiber composite laminates molding process orthogonal experiment battery pack cover

ClassificationCode：TB332

year,vol(issue):pagenumber：2025,50(2):53-58

Abstract：

To expand the application of fiber metal laminates (FMLs) in the automotive field, the molding process of DP590 steel/glass fiber composite laminates was studied. Then, the key process parameters such as mold temperature, molding pressure, molding time and preheating time were optimized by combining orthogonal experiment and single-factor experiment. The research results indicate that the mold temperature and molding pressure are the two main factors affecting the mechanical properties of the composite laminates, and their influencing mechanism stems from their impact on the bonding performance between dissimilar materials. The optimal combination of process parameters is determined as the mold temperature of 155 ℃, the molding pressure of 3 MPa, the molding time of 550 s and the preheating time of 20 s. The new energy vehicle battery pack cover produced under the optimal process parameters has an average tensile strength and bending strength of 533 and 847 MPa, respectively, both of which meet the requirements for use. The proposed stamping and molding composite production process can expand the application scenarios of fiber composite laminates in the automotive field.

Funds：

江西省自然科学基金资助项目（20242BAB25271）；江西省教育厅科技项目（GJJ201903）

作者简介：张波（1975-），男，学士，工程师,E-mail：zhangbo@cmipf.com;通信作者：沈智（1980-），男，博士，副教授,E-mail：nickshen009@163.com

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