Two 1.2 mm thick flat copper sheets are being spot welded using a current of 6000A and a current flow time of 0.18 s. The electrodes are 5 mm in diameter. Estimate  the generated in the weld zone. Take effective resistance as 150 ohm. also calculate temperature rise assuming that the heat generated is confined to the volume ogf materials directly between two electrodes and temperature is uniformly distributed.

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Joining Processes

It is the process of permanent or temporary joining of two metal pieces with the help of heat or pressure. Two metal parts are assembled by applying an energy source for the formation of a single unit. The obtained joined metals cannot be fragmented easily with the application of any force.