Cold Pressure Welding of Non-Ferrous Metals
A purely mechanical joining method without external heat input, where ductile metals such as aluminum or copper are bonded over large areas via cold plastic deformation. High pressure forces the surfaces together, disrupting surface oxide layers to form a direct metallic bond.
Cold pressure welding joins metals purely through pressure and deformation, without any heat. The clean surfaces are pressed together so hard that they flow into each other and form a metallic bond. It works best with soft, ductile metals like aluminum or copper. It's important that the surfaces are really free of grease and dirt, otherwise the joint won't hold. If you apply too little pressure, the bond won't take, and with too much pressure you'll deform the workpiece unnecessarily.