锻压技术

一体化刚性加强结构尺寸对超塑成形减薄率的影响

英文标题：Influence of intergrated rigid reinforcement structure dimension on thinning rate of superplastic forming

分类号：V262.2

出版年,卷(期):页码：2023,48(5):61-66

摘要：

为了研究超塑成形/扩散连接过程中，一体化刚性加强结构的几何尺寸对构件整体减薄率的影响，通过CAE技术并基于超塑成形的技术特点，对一体化刚性加强结构的厚度、宽度对减薄率的作用进行了计算分析，优化了一体化刚性加强结构的几何尺寸，最后进行了验证件的试制验证。结果显示：降低一体化刚性加强结构的厚度，有助于抑制构件的过度减薄，而减小宽度，有助于提高构件的贴模度，优化得到的一体化梯度刚性加强结构在加工制造过程中成形稳定，未出现成形缺陷。验证件的试制结果表明，采用合理的一体化刚性加强结构尺寸，可以实现局部加强零件的精准成形，实测减薄率与计算结果一致，可以指导零件生产。

In order to investigate the influence of the geometric dimensions of integrated rigid reinforcement structure on the overall thinning rate of components during superplastic forming and diffusion bonding process, based on the characteristics of superplastic forming technology, the effect of thickness and width of the integrated rigid reinforcement structure on the thinning rate was calculated and analyzed by CAE technology, and the geometric dimensions of the integrated rigid reinforced structure were optimized. Finally, the trial production verification of verification part was conducted. The results show that reducing the thickness of the intergrated rigid reinforcement structure helps to suppress the excessive thinning of component, while reducing the width helps to improve the degree of die fit for part. The optimized integrated gradient rigid reinforcement structure is stable in the manufacturing process, and there are no forming defects. The trial production results of verification parts indicate that the accurate forming of locally reinforced parts can be achieved by reasonable structural dimensions, and the measured thinning rate is consistent with the calculated results, which can guide the production of parts.

基金项目：

作者简介：王会东（1988-），男，学士，工程师，E-mail：260098181@qq.com；通信作者：史吉鹏（1984-），男，博士，高级工程师，E-mail：shi_jipeng@126.com

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