The Impact of Water Droplets on Electrofusion Welding
Water droplets during PE pipe electrofusion welding directly affect weld quality. Water droplets vaporize at high temperatures, producing bubbles that create voids inside the weld joint, reducing its sealing and strength. Furthermore, water droplets can hinder sufficient contact between the electrofusion sleeve and the pipe, affecting heat conduction and causing uneven welding temperatures.
Countermeasures for Water Droplets
Immediately Stop Welding: Stop welding immediately upon discovering water droplets to prevent further heating and exacerbation of the problem.
Thoroughly Dry: Wipe the water droplets dry with a clean cloth; if necessary, use a hot air gun at a low temperature to dry them.
Inspect the Piping System: Confirm whether the water is condensation or residual water in the pipes, and locate any leaks.
Re-prepare the Joint: If necessary, cut off the affected pipe section and re-machine the weld surface.
Practical Tips for Preventing Water Droplets
Preparation before welding is crucial. Ensure the working environment is dry and there is no standing water inside the pipes; when working in a humid environment, preheat the pipe surface; choose sunny days for outdoor welding; protect pipes from moisture when storing them, and check the packaging for damage before use. These tips can effectively avoid water droplet problems and ensure welding quality.
