车辆热交换器铝合金管的高频焊接

High Frequency Welding of Vehicle Heat Exchanger Tube of Aluminium Alloy

管材所用铝合金带料为三层复合材料,外层为Al-Si钎料层,中间为Al-Mn芯材,内层为Al-Zn防腐层。带材经成型机组成型后经高频焊接而成。研究表明:采用高频焊接铝合金管焊缝成形美观、无气孔等缺陷,焊速高,焊缝微观组织均匀,是一种理想的焊接工艺。

The strap material for robe is three-layer complex aluminum alloy, the outside Al-Si brazing material, the middle Al-Mn core material, the inner Al-Zn resistant corrosion material. The strap is welded together by high frequency welding alter molding set. The experiments show that the weld formation is rery sound ,the welding speed is obviously increased, and also the microstructure of welding line is uniformity. It is proved that high frequency welding for heat exchanger tube of alnminium alloy is a perfect process.