Resistance spot welding is one of the oldest techniques used in industry today. Welding is done with a combination of heat, pressure and time. As the name implies, it is the resistance of the material to be welded to current flow that causes a localized heat
ing in the part. The pressure is exerted by tongs and tips.
Resistance spot welding produces little fumes and arc rays. Even flying sparks is low when compared to other process. Flying metal and sparks can injure eye or face. Resistance spot welding occurs when current flows through the tips and the separate pieces of metal to be joined.
Some of the safety hazards of resistance spot welding are as follows:
- Flying sparks can cause fire and explosion.
- Electric shock from wiring is a possible hazard.
- Hot metals and parts can cause burns.
- Some moving parts like tongs, tips and linkages can cause injury to fingers and hands.
Some ways to avoid hazards are as follows:
- Always wear safety goggles and long sleeve shirts.
- Keep a fire extinguisher nearby.
- Wear dry insulating gloves.
- Do not put hands between tips.
- Do not breathe the fumes.
- Use proper ventilation.
- Do not touch tongs and tips with bare hands.
- Touch them only after it gets cooled.
- Wear proper insulating gloves if handling hot work or parts is necessary.
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