深腔类盒形件充液成形技术研究  

Research on hydroforming technology for rectangular box with deep cavity

作　　者：郎利辉[1] 许诺[1] 王永铭[1] 袁超[1] 徐应强 杨志恒 邵天巍 段新民 

机构地区：[1]北京航空航天大学机械工程与自动化学院,北京100191 [2]中国商飞-上海飞机制造有限公司钣金制造车间,上海200436 [3]中航工业沈阳黎明飞机发动机(集团)公司,辽宁沈阳110043

出　　处：《锻压技术》2013年第2期21-26,共6页Forging & Stamping Technology

基　　金：工信部国际科技合作资助项目(2010DFA52030)

摘　　要：充液成形技术是一种有效提高材料成形极限的方法。针对深腔类盒形件相对拉深高度大、常规拉深成形多道次、成形质量差的问题,通过分析盒形件充液成形过程中易出现失稳的原因,设计了带预胀充液成形的技术方案。针对高盒形件充液成形过程中出现的凹模圆角侧壁破裂、法兰区起皱等失稳形式进行数值模拟分析,得到了较为合理的工艺参数。并通过工艺试验分析了成形过程中压边间隙、液室压力、初始反胀等因素对零件成形性能的影响,最终得到了高质量的成形零件。Hydroforming is an effective method to improve material forming limit. Aiming at the large relative drawing height, multi-process and weak forming quality problems for common deep drawing of 2024 aluminum alloy rectangu lar box, hydroforming with pre-bulging proposal was designed by analyzing defects during the rectangular boxes forming. Combined with numerical simulation, the sidewall fracture near die entrance and the flange wrinkle were studied and available parameters were obtained. Engineering test was carried out and the influences of cavity pressure, the blank holder gap and the pre-bulging on part formability were analyzed. The high surface quality parts were obtained.

关 键 词：2024铝合金 深腔类盒形件 充液成形 数值模拟 

分 类 号：TG386[金属学及工艺—金属压力加工]