The Scientific Principles Behind 100 Seconds
The 100-second timeframe for electrofusion joints refers to the standard operating time for heating. When current passes through the built-in resistance wire, the contact surface between the pipe and fitting undergoes three stages: 40 seconds of preheating and softening, 30 seconds of melting and bonding, and 30 seconds of cooling and setting. This duration has been repeatedly verified to ensure that the polyethylene material's molecular chains are fully reorganized, forming a stronger connection layer than the base material.
Typical Application Scenarios
Municipal Water Supply and Drainage: For underground pipe network repair, a leak-free connection can be completed quickly in 100 seconds.
Gas Pipelines: Explosion-proof design requires precise control of heating time.
Industrial Pipelines: Corrosion-resistant pipes in chemical industrial parks utilize a segmented welding strategy.
Operational Precautions
When the ambient temperature is below 5℃, the welding time needs to be extended by 20%.
Voltage fluctuations of ±10% can lead to a decrease in welding quality.
Incomplete removal of the oxide layer at the pipe ends is the main cause of 80% of failure cases.
