锻压技术

双曲率薄壁铝合金盒形件充液成形工艺

英文标题：Hydroforming process on double curvature thin-walled aluminum alloy box part

单位：1.天津市天锻压力机有限公司 2.天津天锻航空科技有限公司 3.沈阳飞机工业（集团）有限公司 4.北京航空航天大学

分类号：TG394

出版年,卷(期):页码：2023,48(2):94-101

摘要：

双曲率薄壁铝合金盒形件是一种常见的飞机内蒙皮类钣金零件。针对目标零件采用传统落压成形过程中存在的生产效率低、表面质量差的问题，采用充液成形工艺成形该类零件，其目的在于提高零件表面质量并降低模具成本。通过数值模拟软件，建立了双曲率薄壁铝合金盒形件主动式充液成形的有限元模型，通过分析液室压力、压边力加载路径、润滑条件等因素对零件成形性的影响，对零件成形的起皱和破裂情况进行分析，优化确定最佳的工艺参数。并依据优化后的工艺参数进行了现场实验，利用数值模拟技术分析和解决了现场实验零件的质量问题，成功制造出合格零件，进一步验证了工艺方案及工艺参数的可行性。

Double curvature thin-walled aluminum alloy box part is a common aircraft skin sheet metal part. Aiming at the problems of low production efficiency and poor surface quality in the traditional blanking process of the target parts, the hydroforming process is used to form the parts to improve the surface quality of the parts and reduce the die cost. Therefore, the finite element model of hydroforming for double curvature thin-walled aluminum alloy box parts was established by the numerical simulation software, and through analyzing the influences of liquid chamber pressure, blank holder force loading path, lubrication conditions and other factors on the formability of the parts, the wrinkling and cracking situations of the parts forming were analyzed, and the optimum process parameters were optimized. Then, the field experiment was carried out according to the optimized process parameters, and the quality problems of the field experiment parts were analyzed and solved by numerical simulation technology. Finally, the qualified parts were successfully manufactured, and the feasibility of the process scheme and the process parameters was further verified.

基金项目：

作者简介：于弘喆（1993-），男，学士，工程师，E-mail：sorayhz@163.com；通信作者：米新征（1985-），男，学士，工程师，E-mail：tdhklwq@163.com

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