3003铝合金双层盒形壳体液压成形工艺及壁厚控制  

Hydroforming technology and wall thickness control of 3003 aluminum alloy box part with double-layer shell

作　　者：王睿乾 宋彬 杨展奇 徐旻昊 贺久强 刘伟[1] WANG Rui-qian;SONG Bin;YANG Zhan-qi;XU Min-hao;HE Jiu-qiang;LIU Wei(School of Material Science and Engineering,Harbin Insititute of Technology,Harbin 150001,China;Laboratory and Equipment Administrative Office,Harbin Insititute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001 [2]哈尔滨工业大学实验室与设备管理处,黑龙江哈尔滨150001

出　　处：《塑性工程学报》2024年第7期21-28,共8页Journal of Plasticity Engineering

摘　　要：为解决铝合金双层盒形壳体拉深成形开裂难题,提出了盒形件充液拉深与液压胀形复合成形工艺。通过工艺仿真研究了压边力、液室压力及胀形压力对双层板盒形件成形起皱和开裂的影响,并对关键工艺参数进行了优化。结果表明:充液拉深工艺有助于改善壁厚分布,合理的液室压力能够减少内外层板壁厚减薄,但液室压力过大会导致板料初期反胀过度引发减薄甚至破裂,在一定的胀形压力下外板能够实现贴模成形。通过实验研究了复合工艺对铝合金双层盒形壳体成形的影响,最大壁厚减薄率小于15%。该复合工艺为铝合金双层壳体零件成形提供了新方法。To solve the problem of cracking in deep drawing of aluminum alloy box part with double-layer shell,the composite forming process of sheet hydroforming and hydraulic bulging of box part was proposed.The effects of blank holder force,chamber pressure and bulging pressure on wrinking and cracking of box part with double-layer shell were studied,and the key process parameters were optimized.The results show that the sheet hydroforming process is helpful to improve the wall thickness distribution,and the reasonable chamber pressure can reduce the wall thickness thinning of the inner and outer sheets,but the excessive chamber pressure can lead to the excess of the initial back expansion of the sheet,leading to the further thinning and even the rupture of the sheet.Under a certain bulging pressure,the outer sheet can be formed to stick the die.The effect of composite process on the forming of aluminum alloy box part with double-layer shell was studied by experiment.The maximum wall thickness thinning rate is less than 15%.The composite process provides a new method for forming aluminum alloy box parts with double-layer shell.

关 键 词：盒形件 双层板 液压成形 有限元模拟 壁厚控制 

分 类 号：TG389[金属学及工艺—金属压力加工]