Calculation of the Technological Parameters of Electrofusion Welding of Polyethylene Pipes at Low Temperatures.

The thermal process of electrofusion welding of polyethylene gas pipelines at air temperatures below the standard is investigated. The mathematical model used in the research takes into account the heat of the phase transition in the temperature interval. Computational experiments show the possibility of regulating the temperature regime for welding at low ambient air temperatures and providing the same temperature field variation in the thermal zone as with the permissible air temperatures. [ABSTRACT FROM AUTHOR]