摘要
基于国内某型运载火箭共底贮箱筒段壁板法兰孔成形需求,开展了相关的电磁成形法兰孔翻边工艺试验。试验材料为2A14铝合金,材料状态为新淬火态,厚度为7 mm;法兰孔理论尺寸的直径120 mm,翻边高度27 mm,预开孔直径96 mm。试验结果表明:在50 kJ/14.5~15.0 kV工艺参数下,可以实现7 mm厚板的法兰孔电磁成形,实际测得的法兰孔直径118~119 mm,高度25~26 mm,满足设计指标。同时,通过剖面试验研究了法兰孔不同区域的厚度变化,得出了沿法兰孔高度方向的厚度变化规律。在法兰孔顶部材料厚度减薄约14%,符合钣金成形的技术指标要求(不超过20%)。
Flanging process tests for electromagnetic forming flange hole are carried out based on the forming requirements of flange hole in the coplanar tank of a launch vehicle in China. The test material is 2 A14 aluminum alloy at new quenching state,and its thickness is 7 mm. The theoretical diameter of the flange hole is 120 mm,the flanging height is 27 mm,and the diameter of the pre-opening hole is 96 mm. The results show that when the process parameters are 50 kJ and(14.5~15.0)kV,the electromagnetic forming of 7 mm panel with flange hole can be realized.The actual measured diameter of the flange hole is(118~119)mm,and the measured flanging height is(25~26)mm,which can meet the design objective. Meanwhile,the thickness variations at different regions of the flange hole are studied through profile tests,and the thickness variation law along the height direction of the flange hole is obtained.The thickness of the material at the top of the flange hole is reduced by about 14%,which can meet the technical requirements of sheet metal forming(no more than 20%).
作者
王煜
肖冰娥
李坤
陶佳强
王建光
熊艳艳
WANG Yu;XIAO Bing’e;LI Kun;TAO Jiaqiang;WANG Jianguang;XIONG Yanyan(Shanghai Aerospace Equipments Manufacturer Co.,Ltd.,Shanghai 200245,China)
出处
《上海航天（中英文）》
CSCD
2020年第S02期224-228,共5页
Aerospace Shanghai（Chinese&English）
关键词
2A14铝合金
壁板
法兰孔
电磁成形
厚度变化
2A14 aluminum alloy
panel
flange hole
electromagnetic forming
thickness change
作者简介
王煜(1984-),男,高级工程师,主要研究方向为塑性成形。
