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Cold Pressure Welding

Joining process where a large plastic deformation joins together two workpieces without pre-heating.

Illustration of Cold Pressure Welding

The process

Two workpieces, not preheated, are mounted in clamps [1] that are pressed together. This causes a large plastic deformation in the contact surface. This deformation displaces any impurities and oxides, which in conjunction with the high pressure results in the workpieces joining via a metallic connection.