Pipe Fusion Machines Information
Pipe fusion machines fuse plastic pipe and pipe fittings. These machines are used to prepare and join thermoplastic polymer materials such as polypropylene, polyethylene, PVDF and ECTFE pipe. Fusion machines heat up the ends of pipes and fittings and force them together to form pressure-tight homogeneous joints, resulting in a continuous pipe system which is as strong as or stronger than the two fused components.
Fusion Welding Techniques
The three techniques for fusion welding thermoplastic pipe and fittings together are socket fusion welding, butt fusion welding and electrofusion welding.
Socket fusion welding is used to assemble piping systems using injection molded fittings. A metal socket mounted on a hot plate is used to heat the outside diameter of the pipe and a metal spigot on the opposite side of the hot plate heats the inside surface of the fitting. After appropriate heating the hot plate is removed and the pipe is pushed into the fitting.
Butt fusion welding is the welding of thermoplastic pipes end to end to create a continuous pipe system. They are also used in the fabrication of custom pipe fittings made out of piping material. In this process a heated plate is inserted between two pipe ends. The pipes are pressed against the heated plate allowing the heat to soak into the pipe and soften the material. After the material has been appropriately softened the heated plate is removed and the two pipe ends are pressed together and held until a sufficient cooling time has elapsed.
Electrofusion welding is the joining of thermoplastic pipes and fittings that have a built-in electric heating element around the circumference of the area to be welded. When power is applied to the heating element the heat generated melts the inside of the fitting and the outside of the pipe wall as the parts are held together. The assembly is then left to cool for a specified time.
Fusion welders usually adjust to accommodate a range of different pipe diameters. The ranges of pipe sizes an individual fusion welder can handle are limited so it is important to select a machine that fits the pipe to be fused. Pipe fusion machines include guides and locks to ensure proper placement of the pipes or fittings, as well as additional components used to apply and maintain correct force on the two pieces throughout the heating and cooling process.
Features available with different fusion welding machines include:
- Working ranges from Ø 1" IPS ÷ 63" IPS (32m m to 1600 mm)
- Manual, hydraulic or complete CNC controlled
- Ability to Weld fittings like elbows, tees, Y-branches and stub flanges
- Onboard Generator for Power Independence
- Drivetrain and steering for self-propulsion
- Wheeled trailer configurations
- 110 V and 230 V versions
- Milling cutter to clean weld joints
- GPS traceability
- Data-logging capabilities