Spot

Welding

Spot Welding

Spot welding is principally used as a method of joining sheet steel. The process is used extensively in the Automobile industry where the spot welding process can be automated with the aid of robots. Spot welding can be undertaken in the school workshop (on a much smaller scale) as follows.

Spot Welding

Stage 1: The two pieces to be joined must be cleaned thoroughly, rust, paint, grease etc must be removed. Use a piece of emery cloth to clean the metal.

Put on safety equipment

Leather Apron

Goggles

Leather Gloves

Spot Welding

Spot WeldingHandle

Weld timing dial

On / Off Switch

Copper Electrodes

TransformerStage 2: Use the weld timing dial to set the correct weld time for your metal thickness.

Spot Welding

Stage 3: Clamp the two pieces together in the welder

Spot Welding

Stage 4: Squeeze the handle down until it hits to On /Off switch. Hold the handle here until the weld cycle is complete (Remember when removing the metal, always wear heatproof gloves)

Spot Welding

Stage 5: Repeat this process for a second weld if necessary

Spot Welding

Stage 6: Allow weld to cool

The End