High frequency welding carbon steel copper coated refrigerator tube make machinery

Welding method editor Voice

I. Spot welding

Resistance welding machine

Resistance welding machine

Spot welding is a resistance welding method in which the welded parts are assembled into a lap joint and pressed between two columnar electrodes, using resistance heat to melt the base metal and form a welded joint. Spot welding is mainly used for welding thin plates. The process of spot welding.

1. Pre-pressure to ensure good contact with the workpiece.

2,Electricity, so that the weld to form a molten nucleus and plastic ring.

3, power off forging, so that the molten nucleus in the pressure to continue to cool crystallization, the formation of a dense organization, no shrinkage, cracks in the welded joint.

Second, seam welding

The process of seam welding is similar to spot welding, except that a rotating disc-like roller electrode is used instead of a column electrode to assemble the weld into a lap or butt joint and place it between two roller electrodes, the roller presses the weld and rotates, continuously or intermittently feeding electricity to form a continuous weld resistance welding method.

Seam welding is mainly used to weld the weld seam is more regular, the requirements of the sealed structure, the plate thickness is generally below 3mm.