Mainly In spot welding & resistance welding two type welding
machines are used :- 1. Air Cooled & 2. water Cooled.
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Spot welding is a form of resistance welding invented by Elihu
Thompson in the late 1800s.
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spot welding is one reason
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A spot welding robot has generally 5 axis opposed to an arc
welding robot that needs 6 axis. The controls and communication
channels with the welding power supplies are configured differently
as well.