INSTRUCTION MANUAL
10
3. F-400 GENERAL INFORMATION
3.1 INTRODUCTION OF FLANGING
The machine is intended for widening the end of a pipe to form a flange using a rotating
forming cone. The flange thus formed is used as a sealing and joining element in so-
called loose flange joints.
1. Bolt, 2. Loose flange, 3. Flanged pipe, 4. Seal
The work method of the machine
The spindle and the flange spinning tool attached to it are made to rotate by an electric
motor. The bearing-mounted forming pin in the flange forming device turns directed by
the guide of the slide and while turning forms the flange in the pipe end. All machine
movements are hydraulic, except for the spindle rotation and the movement of the arm
of the heating burner.
The flanging operation: 1. Spindle, 2. Flange forming tool, 3. Forming pin, 4. Pipe clamp,
5. Pipe
The pipe remains immobile during the entire work cycle and consequently also branched
and bent pipes can be flanged. The work method makes it possible to flange a great
number of pipes of different diameters, since the forming pin and the pipe are linearly in
contact with each other. The wall thickness of the pipe determines almost completely the
necessary amount of force to be exercised on the material for flanging.
Pipes flanged by this method can be used in loose flange joints to replace lapped and
partly also cast pipe ends involving welding or soldering. The maximum dimensions of
the flange are the same as those of equivalent welded on lapped pipe ends. Depending
