spot welding

Spot welding is a type of resistance welding where both the current and pressure are concentrated on specific areas of the metal surfaces that are in contact. This process creates a joint by heating the interface of the metals through their electrical resistance, typically using a low-voltage, high-current power source and applying force through electrodes. Spot welds are commonly made on overlapping sheet metal at regular intervals, with the strength of the joint depending on the number and size of these welds. This method is distinct from other welding techniques as it localizes the heat and pressure to create individual "spots" of fusion.123