Q345钢结构的焊接工艺与品质控制研究

Research on Welding Process and Quality Control of Q345 Steel Structure

以建筑钢结构用Q345钢板为对象,研究了焊接功率、焊接电流和电弧高度对其熔深和焊缝宽度的影响,并探讨了焊接工艺参数对焊接质量的作用机理。结果表明,要得到较为理想的焊接品质,焊接过程中,焊接功率、焊接电流和电弧高度需要控制在一定范围内,焊接工艺参数优化结果表明合适的焊接功率为3 000~3 500 A,焊接电流为105~145 A,电弧高度为3~4 mm。

The effect of welding power, welding current and arc height on the weld depth and weld width of Q345 steel structure was studied, and the mechanism of welding process parameters was discussed. The results show that the welding power, welding current and arc height need to be controlled in a certain range, and the optimal welding parameters are as follows： welding power 3 000~3 500 A, welding current 105~145 A, arc height 3~4 mm.