1·对2219铝合金筒段的化学铣切工艺进行了研究，以确定化学铣切工艺的最佳配方和工艺控制要点。
The chemical milling process for 2219 aluminum alloy tube was investigated using orthogonal test and the optimum formula and technology were established.
2·研究电磁搅拌对2219铝铜合金脉冲MIG焊焊缝形状、组织及性能的影响。
Effects of electromagnetic stirring on the shape, structure and mechanical properties of pulse metal inert gas (MIG) weld of 2219 Al-Cu alloy were investigated.
3·用热塑性试验评定2219铝合金的液化裂纹敏感性，利用扫描电镜对热塑性试样断口进行了分析。
Hot ductility testing was used to evaluate the liquation cracking susceptibility of aluminum alloy 2219. The fracture surface of hot ductility samples was examined using SEM.
4·采用焊接热模拟试验方法研究了2219铝合金双丝焊热影响区的微观结构和力学性能的变化规律。
Microstructure and mechanical properties changing rules of 2219 Al-alloy HAZ (heat-affected zone) with twin wire welding were studied using welding thermal simulation method.