Seam Welding Process

Welding head formation is essentially the same as spot welding, thus affecting the quality of welding is similar to the factor. Main welding current and electrode pressure and welding time, rest time, welding speed and rolling disk diameter.

welding current

Seam welding required to form the core of heat sources the same as spot welding, is the use of an electric current through the resistance welding of heat. In the case of other conditions, welding current is determined by the size of the core's penetration rate and lap. When welding mild steel, molten core with an average penetration rate of plate thickness 30-70%, 45-50% is the best. In order to obtain air-tight seam weld nugget overlap should not be less than cent.