LEIFELD CNC Flow Forming Machines

Flow forming is a process for forming rotationally symmetrical hollow parts. A blank or pre-formed blank is clamped between mandrel and tailstock and rotated. A characteristic of the process is the fact, that the metal is formed by localized compression resulting from the radial pressure of the rollers. The metal is made to flow and, in a single roller pass, assumes the contour of the mandrel on the inside.

Process accuracy is equivalent to that of close-tolerance machining. Uninterrupted grain flow and an increase in mechanical strength as a function of the reduction act in favor of flow forming.

 

 

The following parts were flow formed on Leifeld machines: