锻压技术

单向热塑性玻璃纤维金属层板热冲压成形性能

英文标题：Hot stamping formability for unidirectional thermoplastic glass fiber metal laminates

作者：杨姝1 2 张宁1 亓昌1 2 盈亮1

分类号：TB333

出版年,卷(期):页码：2024,49(8):38-46

摘要：

为了研究2/1型单向热塑性玻璃纤维金属层板（UTG/FMLs）的热成形性能，基于热冲压成形工艺，通过胀形试验开展了温度和成形速度对其热成形性能影响规律的研究并分析了成形机理。结果表明：提高温度会降低UTG/FMLs的整体强度并提高异质层间的协调变形能力，进而影响其热成形性能；160~200 ℃温度区间可使该类FMLs异质层间达到理想的协调变形并提高成形质量。成形速度不会影响UTG/FMLs的初始力学性能，但会改变其成形过程的受力分布，影响成形件的表面质量和层间结合性能；较低的成形速度有助于抑制成形件缺陷的产生。最后，基于典型双曲率复杂曲面件热冲压成形试验，验证了该方法的有效性，确定其最佳成形温度为180 ℃、成形速度为3 mm·s-1。

In order to study the thermoforming properties unidirectional thermoplastic glass fiber metal laminates (UTG/FMLs) of 2/1 of type, the influence laws of temperature and forming speed on the thermoforming properties of UTG/FMLS were studied by the bulging test based on the hot stamping process, and the forming mechanism was analyzed. The results show that increasing the temperature can decrease the overall strength of UTG/FMLs and improve the coordinated deformation ability of heterogeneous layers, thus affecting the thermoforming properties. The temperature range of 160-200 ℃ can achieve the ideal coordinated deformation between the heterogeneous layers of FMLs and improve the forming quality. However, the forming speed does not affect the initial mechanical properties of UTG/FMLs, but changes the force distribution during its forming process and affects the surface quality and the interlayer bonding properties of formed parts. The lower forming speed helps to restrain the defects of formed parts. Finally, the effectiveness of the method is verified based on the hot stamping test of typical hyperbolic complex curved parts, and the optimum forming temperature is 180 ℃ and the forming speed is 3 mm·s-1.

基金项目：

国家重点研发计划项目（2022YFB2503503）；国家自然科学基金资助项目（52375310）

作者简介：杨姝（1978-），女，博士，副教授 E-mail：yangshu@dlut.edu.cn 通信作者：盈亮（1983-），男，博士，副教授 E-mail：yingliang@dlut.edu.cn

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