Resistance Projection Welding (RPW) Advantages and Disadvantages



Working Principle of Resistance Projection Welding (RPW)

In resistance projection welding (RPW), small
projections are formed on one or both pieces of the base metal to obtain
contact at a point which localize the current flow and concentrate the heat.
Under pressure, the heated and softened projections collapse and a weld is
formed. Projection on the upper component is pressed against the

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