中等厚度以上铝及铝合金的焊接已较广泛地应用熔化极自动氩弧焊,此法的优点是电流密度大、电弧穿透力强、生产率高,与钨极手工氩弧焊相比提高效率三倍以上,并随着焊件厚度的曾大生产率进一步提高。由于焊接速度快,焊接热影响区和焊件的变形量小,因此可以确保接头的 The welding of aluminum and aluminum alloy over the medium thickness has been widely used in the welding of TIG welding. The advantage of this method is that the current density is high, the arc penetration is strong, the productivity is high, and the efficiency is improved compared with the tungsten manual argon arc welding More than three times, and with the thickness of the weldment has greatly increased productivity. Due to the fast welding speed, the HAZ and weldment deformation is small, it is possible to ensure that the joint