SIMULATION OF THE THERMAL PROCESS OF BUTT WELDING OF POLYETHYLENE PIPES AT LOW TEMPERATURES

A theoretical study has been made of the thermal process of welding polyethylene pipes for gas pipelines at low ambient air temperatures. The mathematical model used takes into account the heat of the phase transition in the temperature range, as well as the thermal effect of the fin formed by the slip. Computing experiments have shown that it is possible to control the temperature regime in welding at low ambient air temperatures and provide, in the thermal infl uence zone, the same change in the temperature fi eld as at permissible air temperatures.
   
Author:  N. P. Starostin and O. A. Ammosova
Keywords:  polyethylene pipe, welding, temperature fi eld, phase transition, fi n, temperature control
Page:  714