锻压技术

新型冲击充液复合成形工艺及其关键技术研究

英文标题：Research of innovative hybrid impact hydroforming process and its key technology

作者：郎利辉王少华杨春雷袁超

单位：北京航空航天大学

分类号：

出版年,卷(期):页码：2014,39(7):1-5

摘要：

冲击充液复合成形技术是充液成形技术与高能高速冲击成形技术复合的一项新型板材成形技术，主要用来成形航空航天、汽配领域中的特种材料复杂构件，以解决充液成形技术对于小凹角、小压痕等局部特征尺寸的、难一次成形的问题。分析了冲击充液成形工艺步骤以及高能高速成形下材料动态响应等关键技术；推导获得液体冲击力与打击能量间的关系式以及脉冲作用频率；最终设计制造出以压缩气体膨胀做功并输出能量的冲击充液复合成形装置，其结构简单且容易控制，实现了大部分特征的充液成形和局部小特征的高能高速成形工艺复合。

The innovative hybrid impact hydroforming technology is a new technology combining hydroforming and high energy rate forming, which can be used to form some complicated products with local characteristic such as small arch or tiny mark that features were hardly formed at one time by hydroforming in the aerospace and automotive fields. The steps of impact hydroforming process and key technology of dynamic response and others of material during high energy rate forming were analyzed. The relationship between liquid shock force and energy was introduced while frequency could be calculated. The impact hydroforming apparatus, which acting with expanding of pressurization-gas and exporting energy, was designed and made finally. The equipment is of simple structure and easily controlled. The hybrid of forming large features by hydroforming and forming small feature by high energy rate forming is achieved.

基金项目：

国家自然科学基金资助项目（51175024）；国际科技合作项目（2010DFA52030）

郎利辉（1970-），男，博士，教授，博导

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