由于铝合金的反射率和热传导率很高,使其一度成为CO_2激光焊接的禁区。本实验在不采用焊料及任何化学表面处理的情况下,选用合适的激光参数和工艺技术,实现了3004号和6063号铝合金的激光焊接,并进行了金相分析。

Because of the high reflectivity and the high thermal conductivity, aluminum alloys are considered as the forbidden zone of CO2 laser welding. Without any fillers and under ordinary surface conditions, several aluminum alloys (3004 and 6063 aluminum alloys) are welded successfully through using appropriate laser welding parameters, and the metallographic structure of 6063 is analyzed.