结果表明,随激光功率增大和焊接速度降低,复合焊与单一激光焊焊缝的横截面形貌均由钉形向近X形转变。
It showed that the weld cross section with both laser welding processes transformed from nail shape to near X shape with increase of laser power and decrease of welding speed.
试验结果表明,激光焊复合工艺可以显著提高焊缝熔深和焊接速度,从而实现采用小功率激光焊机实现铝合金激光焊接的目的。
Test results indicate that compound process of laser welding can remarkably improve weld penetration and welding speed, therefore low power laser welder can be used for aluminum alloy welding.
当CO2含量>30%后,复合焊接工艺稳定性变差,焊缝硬度急剧降低。
Moreover, when CO2>30%, the process stability and microhardness of weld dramatically decrease.
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