for round varieties of shapes
forming process spinning / shear forming

Spinning is an innovative forming technology for the production of seamless sheet metal parts. It is performed on machines which are built similar to lathes. Instead of a chuck the spinning tool is fixed. In place of a cutter a spinning roll is installed.

The original round blank is clamped between tailstock and tooling. The work spindle starts turning. The roller is forming the material continuously until it finally fits on the spinning tool. The forming process takes usually place in several stages.

Shear forming
The original round blank is clamped between tailstock and tooling. After plug in of the work spindle movement the spinning roller operates parallel to the axis according to the contour of the spinning chuck in the defined distance. This results into a wall thickness reduction in the formed area. This thinning depends on the opening angle of the cone.

Processible materials:

  • stainless steels, e.g. 304 / 316 / ...
  • aluminium and aluminium alloys
  • steel sheets
  • heat treatable steels
  • fine-grained steels
  • titanium und titanium alloys
  • nickel and nickel alloys
  • tantalum, zircon, niobium

Advantages of spinning in comparison to conventional methods:

  • short delivery times
  • extremely high inside surfaces
  • high dimensional accuracy grades of parts
  • optimal grain structure
  • conical/ weaned wall thicknesses possible
  • manufacturing of parts with integrated flange
  • enhanced mechanical properties
  • attractive prices even for small and middle sized batches
  • a wide range of materials
  • a high diameter-to-length ratio
  • lower tooling outlay

Production possibilities:

  • round hollow bodies up to 5000 mm diameter
  • wall thickness up to 30 mm