Projection welding machines

Projection welding is a modification of spot welding. In this process, the weld is positioned at raised sections or protrusions, called humps on one or both of the parts to be joined. When the parts are pressed together, heat is concentrated in the area of the protrusions by the application of current, causing them to soften/melt, forming a weld, or so-called weld, at this location. Projection welders are essentially presses that have flat electrodes instead of spot welding electrodes.

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