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What is difference between spot welding and projection welding?

Answer:

The only difference between the two is that projection welding requires preparation of the joint members in the way of adding a preformed dimple or projection. Spot welding is used without such preparation to the joint members. it's just heat and pressure.

First answer by Kmcquiggin. Last edit by Kmcquiggin. Contributor trust: 37 [recommend contributor ]. Question popularity: 3 [recommend question].

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