Remove the heating element: The operation must be performed for the shortest possible time. It includes the separation of welded edges of the heating element, deleting an item without damaging the softened surfaces and immediate connection to the welded ends. Rapid implementation of these steps will prevent excessive cooling of the edges (surface temperature drops to 17 ° C for three seconds).
Install pressure welding: When connecting the ends of PP pipe pressure gradually increases to values (p5 + pt, where p5 = p1, and pt – the pressure thrust.
Welding: welding pressure must be maintained over time t5.
Cooling: Upon completion of welding the contact pressure is removed, and the connection can be removed from the machine. Do not use a mechanical load to full cooling compounds. Cooling time should be no less welding time t5.