Cold drawing
Excellent Surface Finish
The process of cold drawing is a procedure by which the metal is formed in order to achieve complex profile cross sections of excellent precision. After careful pre-treatment and descaling the special profile bars are drawn through a forming die. This operation can be repeated up to three or four times.

Cold drawing of hot rolled and hot extruded special profiles tightens the cross-section tolerances, thus leading to significant improvement in dimensional accuracy and surface quality. Cold drawn special profiles offer the same precision achieved by machining – but without the waste.

Cold drawn special profiles offer extensive
advantages, among other things:
  • smooth and scale-free surface
  • sharp edges
  • uninterrupted grain orientation
  • increased tensile strength and yield point
Technical possibilities


Dimensions:
  • circumscribed circle up to approx. 200 mm Ø; for flat steel up to 300 mm wide
  • minimum wall thickness: 4 mm


Length:
  • up to 11,000 mm (depending on profile cross section), with sawn ends (fixed lengths by agreement)


Weight per meter:
  • minimum c. 1.5 kg/m
  • maximum c. 120 kg/m

Cross-sectional tolerances/Straighteness tolerances:
  • Dimensional tolerances by agreement up to 0.05 mm, depending on cross- section and materials
  • Straightness tolerances and twist: 1mm/m on supply length or by special agreement


Surface:
  • cold drawn

Materials/Treatments
  • nearly all quality and stainless steels in the iron and steel list, special steels, non-ferrous heavy metal alloys
  • all required heat treatments are available

Production Technology
Process Demo
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Hoesch Schwerter Profile GmbH, Eisenindustriestraße 1, 58239 Schwerte, E-mail: info@hoesch-profile.com