The cold welding process is performed in solid state, where metal joint is produced
in the room temperature and also under of mechanical pressure. The joint is made
without of filler rod.
The main characteristic of this welding process is total absence of heat and flux.
A specially designed die is used for restricting or controlling the deformation of
weld parts. The pressure is applied by manually or with power driven. The amount
of pressure is applied on three factor-