结果表明，填充焊丝可以消除铝合金激光自熔焊时的凹陷、咬边等宏观缺陷；
The results show that, the filler wire can eliminate the subside and undercut of butt joints which are inevitable in the laser welding aluminum alloy without filler wire.
前者试验获得了一定激光功率和离焦量条件下两组焊接速度和送丝速度的匹配关系，并发现填充焊丝的加入对焊缝咬边现象确有改善；
Two groups of matching relation of the weld speed and the wire feed rate were found in a condition of invariable laser power and focus position.
根据熔化极焊丝填充焊的特性，对钢桥焊接中普遍应用的药芯焊丝CO_2气体保护焊和埋弧自动焊进行了焊接试验。
According to the characteristics of arc welding with filler wire, experiments about the FCAW-CO_2 and SAW which is commonly used in steel bridge welding were carried out.
采用药芯焊丝对奥氏体不锈钢管道进行打底焊接，MAG焊填充及盖面焊，立向上的水平固定全位置焊接。
Flux-cored wire is applied to the austenitic stainless steel pipe by back weld, MAG for the filling and cosmetic weld, at horizontal fixed round welding vertically up.
采用药芯焊丝对奥氏体不锈钢管道进行打底焊接，MAG焊填充及盖面焊，立向上的水平固定全位置焊接。
Flux-cored wire is applied to the austenitic stainless steel pipe by back weld, MAG for the filling and cosmetic weld, at horizontal fixed round welding vertically up.
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