2219铝合金拉锻式摩擦塞补焊工艺研究

Peng LU,Lei CUI,Huimiao WANG,Yongliang CHEN,Dongpo WANG,Zhuanping SUN,Jianling SONG, Zhongping ZHANG

Aeronautical Manufacturing Technology（2019）

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Abstract

针对6～8mm厚2219-T87铝合金拉锻式摩擦塞焊工艺进行了研究结果表明,塞棒/塞孔及砧板成形孔结构及轴向载荷、焊接转速、进给速度等焊接工艺参数均对焊接质量有重要影响采用圆弧形塞棒、圆柱形塞孔、阶梯锥形底孔的砧板能够改善塞孔附近材料的流动方向和受力条件,进而消除未焊合缺陷焊接转速7000r/min、焊接压力20～30kN、轴向拉锻力20～30kN、进给速度1.5mm/s是较优的焊接工艺范围焊接接头中母材侧的热力影响区软化最为明显,硬度值为79.9HV在优化参数下,焊接接头的抗拉强度可达365MPa,延伸率6％.

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