1. The shielding gas of the welding nut is argon.
2. The length of the tungsten electrode protruding from the gas nozzle.
3. Generally suitable for the welding of thin plates below 6mm, with the characteristics of beautiful welding seam shape and small welding deformation.
4. The power supply with vertical external characteristics is adopted, and the positive polarity is adopted for direct current (the welding wire is connected to the negative electrode).
5. Windproof and ventilation. In windy places, be sure to take measures to block the net, and take appropriate ventilation measures indoors.
6. In order to prevent the appearance of welding pores, any rust and oil stains on the welding parts must be cleaned up.
7. For welding arc length, 2~4mm is better when welding ordinary steel, and 1~3mm is better when welding stainless steel. If it is too long, the protection effect will not be good.
8. In order to make the argon gas well protect the welding pool and facilitate the welding operation, the centerline of the tungsten electrode and the workpiece at the welding point should generally maintain an angle of 80-85°, and the angle between the filler wire and the surface of the workpiece should be as small as possible. It is generally about 10°.
