摘要: |
以大尺寸带通孔铝合金板材热成形工艺过程为研究对象,通过Deform-3D有限元分析软件进行板材热成形数值模拟。结果表明:板材上通孔沿周向热成形比沿其它方向热成形的变形程度小,原因在于沿周向热成形时通孔大部分区域的等效应力为80MPa,比沿其它方向热成形时通孔的等效应力小。试验验证带通孔板材沿周向热成形相比沿其它方向热成形,通孔的变形程度小,一般不大于3%,且零件的型面精度较好,间隙小于0.2mm,与模拟仿真吻合。 |
关键词: 大尺寸;带通孔板材;铝合金;热成形;数值模拟 |
基金项目:航天飞航弹体及发射装备轻量化柔性制造成套设备应用示范(2018ZX04014-001) |
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Study on Hot Forming Technology of Large Size Aluminum Alloy Sheet with through Holes |
Xue Jie Qin Zhonghuan Li Baoyong Liu Wei Xu Kai Li Xin
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Beijing Hangxing Machine Manufacture Co., Ltd.
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Abstract: |
For hot forming process of large size aluminum alloy sheet with through hole, the hot forming process was simulated by Deform-3D finite element analysis software. The results show that, the deformation degree of through-hole forming along circumferential direction is smaller than that of non-circumferential direction. The reason is that the equivalent stress in most areas of through-hole forming along circumferential direction is 80MPa, which is lower than that of through-hole forming without circumferential direction. The experiment verified that, comparing circumferential hot forming with non-circumferential hot forming, the deformation degree of through-hole of the former is less than 3%. The profile accuracy of the sheet along circumferential hot forming is better, and the clearance is less than 0.2mm, which is consistent with the simulation. |
Key words: large size;sheet with through hole;aluminum alloy;hot forming;numerical simulation |