The conductive workpiece is placed inside or next to a Bmax coil which accelerates it over 1mm to impact the second workpiece at extremely high speed. The acceleration is a result of repelling magnetic fields between the workpiece and the coil, produced by the eddy current in the workpiece.
Solid state cold weld is created when two metals are forced together in such intensity their atoms start sharing electrons, practically fusing the two metals together. Since there is no heat or melting involved, dissimilar metals can be welded using this technique.
MPW triggers this phenomenon by accelerating the metal into visco-plastic phase and impacts the other workpiece at an exact speed and angle.