1. The protective gas is argon.
2. The length of the tungsten electrode protruding from the gas nozzle.
3. Use a power supply with vertical external characteristics, and use positive polarity for DC (the welding wire is connected to the negative pole).
4. In order to prevent the occurrence of welding pores, any rust, oil stains, etc. on the welding part must be cleaned.
5. It is generally suitable for welding thin plates below 6mm. It has the characteristics of beautiful welding seam shape and small welding deformation.
6. Windproof and ventilated. In windy areas, be sure to take measures to block nets, and take appropriate ventilation measures indoors.
7. The welding arc length is preferably 2~4mm when welding ordinary steel, and 1~3mm when welding stainless steel. If it is too long, the protection effect will be poor.
8. In order to make the argon gas well protect the welding pool and facilitate the welding operation, the center line of the tungsten electrode and the workpiece at the welding location 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. Generally it is about 10°.
