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基于弹性介质的铝合金板材小尺寸凸角电磁成形试验研究
英文标题:Experimental study on electromagnetic forming of aluminum alloy sheet with small convex angle based on elastic medium
作者:陈浩 朱卫东 蒋鹏 张建波 金红 周林 魏巍 陆辛 
单位:北京机电研究所有限公司 中国机械工程学会塑性工程分会 
关键词:电磁成形 6014铝合金 板材 凸角 弹性介质 
分类号:TG391
出版年,卷(期):页码:2019,44(3):181-187
摘要:

针对6014铝合金板材的V形凸角成形,开展了基于弹性介质的带驱动板的电磁成形工艺试验研究,探究磁脉冲放电、弹性介质硬度、凹模空腔真空度以及弹性介质形状尺寸等因素对铝合金薄板小尺寸凸角成形能力的影响。试验结果表明,磁脉冲放电电压越大、弹性介质硬度越小、凹模空腔真空度越高,成形的凸角高度越大。并通过对弹性介质形状、尺寸和模具结构的优化,最终在放电电压为3.5 kV、聚氨酯硬度为A90、凹模空腔真空度为3.2 Pa的条件下获得了较为理想的V形凸角成形效果,凸角高度为2.92 mm,凸角顶端圆角半径为R1 mm,达到了小圆角特征的成形精度要求。

Aiming at V-shaped convex angle forming of 6014 aluminium alloy sheet, the experimental study on electromagnetic forming process with driving plate based on elastic medium was carried out. The effects of magnetic pulse discharge voltage, hardness of elastic medium, vacuum degree of cavity and shape and size of elastic medium on forming ability of small-sized convex angle of aluminium alloy sheet were investigated.The experimental results show that the higher the discharge voltage of magnetic pulse, the smaller the hardness of elastic medium and the higher the vacuum degree of the cavity, the higher the height of the convex angle. By optimizing the shape, size and die structure of the elastic medium, the ideal V-shaped convex angle forming effect was obtained under the discharge voltage of 3.5 kV, polyurethane hardness of A90 and cavity vacuum of the concave die of 3.2 Pa, and the convex angle height was 2.92 mm and the minimum fillet was R1 mm, which met the forming accuracy requirement of small fillet.

基金项目:
国家国际科技合作专项项目(2015DFR71080)
作者简介:
陈浩(1994-),男,硕士研究生,E-mail:1197029766@qq.com;通讯作者:朱卫东(1968-),男,硕士,硕士生导师,研究员,E-mail:903521354@qq.com
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