Categories

1, according to the processing process requirements, can be divided into: direct punching type shrinkage machine (pneumatic or hydraulic), rotary shrinkage machine, knocking type shrinkage machine, rotary shrinkage machine.

2, straight punching shrinkage machine: through the pneumatic or hydraulic pushing calibre than the pipe outer diameter of the slightly smaller die, the pipe port extrusion become smaller; this process is suitable for a single variable diameter range of shrinkage processing.

3, rotary shrinkage machine: the mould will be driven by the motor high-speed rotation, the friction between the mould and the pipe and produce high temperature, so that the pipe becomes soft, through the pneumatic or hydraulic push the caliber than the pipe outside diameter of the smaller mould, the pipe port extrusion become smaller; this process is suitable for a single processing variable diameter range of shrinkage processing, the mouth of the pipe will be processed after the scorched.