Welding machine for electric fittings
The heating wire permanently pressed into the fitting is heated by low voltage. Due to this heating, the surrounding material around the wire melts and expands. This causes the melt to begin to seal between the pipe and the fitting, which leads to the transfer of heat into the pipe, which also heats up and melts in the welding zone. In doing so, the pipe material also expands. The increased extensibility of the material between the pipe and the fitting, which prevents cold zones outside the welding area, creates a welding pressure between the pipe and the fitting, creating a homogeneous weld joint.
This process can be performed on pipes with diameters from 20 mm to 630 mm.