Which welding process uses electrodes to clamp sheets and passes current to weld?

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Multiple Choice

Which welding process uses electrodes to clamp sheets and passes current to weld?

Explanation:
Resistance Spot Welding clamps the sheets between two electrodes and passes electric current through them. The electrical resistance at the contact points generates heat, melting the metal and forming a weld nugget where the sheets press together. This combination of clamping by electrodes and using current to generate the weld is what defines this process. Other methods use different heat sources: MIG uses a consumable wire and arc with shielding gas; TIG uses a non-consumable tungsten electrode with shielding gas; Ultrasonic welding uses high-frequency vibrations to join materials without the same resistance heating mechanism.

Resistance Spot Welding clamps the sheets between two electrodes and passes electric current through them. The electrical resistance at the contact points generates heat, melting the metal and forming a weld nugget where the sheets press together. This combination of clamping by electrodes and using current to generate the weld is what defines this process. Other methods use different heat sources: MIG uses a consumable wire and arc with shielding gas; TIG uses a non-consumable tungsten electrode with shielding gas; Ultrasonic welding uses high-frequency vibrations to join materials without the same resistance heating mechanism.

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