随着风电机组功率的扩大,风电塔筒厚度不断增加,传统宽坡口埋弧焊工艺焊接难度加大,焊缝质量和生产效率降低。通过试验,研究风电塔筒用Q345E钢窄间隙埋弧焊性能,发现与传统宽坡口埋弧焊相比,窄间隙埋弧焊能够较大程度地提高焊缝力学性能和生产效率,这对风电塔筒的生产有重要的指导意义。 With the expansion of the power of wind turbines, the thickness of the wind tower has been increasing. It is more difficult to weld the traditional wide bevel submerged arc welding process and the weld quality and production efficiency are reduced. Through the test, the narrow gap submerged arc welding performance of Q345E steel for wind power tower was studied. It was found that the narrow gap submerged arc welding can improve the mechanical properties and production efficiency of welding seam to a great extent, compared with the traditional wide bevel submerged arc welding The production of wind tower has important guiding significance.