本文關鍵詞： 鋁合金 激光-電弧復合焊接 引導方式 成形質(zhì)量　出處：《應用激光》2017年02期 　論文類型：期刊論文

【摘要】：為了研究激光-電弧復合焊不同引導方式對鋁合金焊接成形質(zhì)量的影響,采用YAG激光-MIG電弧復合熱源對10mm厚5083鋁合金板進行平板堆焊試驗,并采用HANNOVER電弧分析儀、高速攝像機、金相顯微鏡等設備研究不同引導方式下焊縫宏觀組織和微觀組織的影響。研究表明,不同引導方式對焊縫成形有較大影響。電弧引導激光焊接(Arc-laser hybrid welding leading,AL)時,激光與電弧兩熱源的耦合效果好,焊縫截面成型良好,為典型的"蘑菇"狀;激光引導電弧焊接(Laser-Arc hybrid welding leading,LL)激光電弧作用區(qū)主要為等軸細晶粒,AL為明顯的等軸樹枝晶和細小的等軸晶粒。同時二者接頭焊縫中心硬度值均略低于焊縫中心到熔合線之間的硬度值。LL焊接較AL時熔池振蕩嚴重,熔滴易呈爆炸傾向過渡。
[Abstract]:In order to study the laser arc hybrid welding with different welding guide way influence the forming quality of Aluminum Alloy, using YAG laser -MIG arc hybrid welding of 10mm thick 5083 Aluminum Alloy plate plate welding test, and the HANNOVER arc analyzer, high-speed camera, microscope and other effects of equipment under different guiding modes under the macrostructure and microstructure of the weld. The study shows that the different boot mode has a great influence on the formation of weld arc guide. Laser welding (Arc-laser hybrid welding leading, AL), coupling effect of laser and arc heat source two, the cross section of the weld forming is good, is a typical "mushroom" shape; laser guided arc welding (Laser-Arc hybrid welding leading, LL) laser arc zone is equiaxed fine grain, AL obvious equiaxed dendrite and fine equiaxed grains. At the same time the two weld center hardness values are omitted When the hardness value of.LL is lower than that between the weld center and the fusion line, the molten pool oscillates seriously when the welding is more than AL, and the droplet tends to be explosive.

【作者單位】： 長春理工大學機電工程學院;激光加工吉林省高等學校工程研究中心;國家國際科技合作基地(光學);
【分類號】：TG457.14
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本文編號：1554008