Study on the performance of laser arc hybrid welding process for Q345B steel
The influence law of laser arc composite welding on the forming of 6 mm thick Q345B plate was stud-ied using the laser arc composite welding method,and the adaptability of the working conditions and joint per-formance under this method were analyzed.The results showed that good weld formation was achieved at laser power of 4 000 W,welding speed of 0.8 m/min,wire feeding speed of 8 m/min,and wire spacing of 5 mm,with good adaptability to gaps and misalignment;The X-ray inspection of the weld seam can achieve Level I qualification;The mechanical performance of the joint is good.
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