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Processing services Roll forming

Roll forming

The roll forming process transforms a flat sheet section into a special profile by incremental bending of the flat section through a series of contoured and profiled rolls into the final complex section geometry. The sheet metal is usually coil fed but can also be from a blank. Coil roll forming lines produce much more complex profiles than blank fed lines which are normally prototype lines or wide format roll forming for simple parts. Very precise, complex cross-sections can be produced consistently, allowing very tight tolerances, superior surface finishes and long length final parts.

 

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Method

Along each length, features such as holes, slots, or embosses can be added, making the roll forming process a very cost effective method of achieving a strong, multi-functional shape. Roll forming is also well suited for Advanced High Strength Steel (AHSS) and Ultra High Strength Steel (UHSS), where material utilization is at a maximum.

Along each length, features such as holes, slots, or embosses can be added, making the roll forming process a very cost effective method of achieving a strong, multi-functional shape. Roll forming is also well suited for Advanced High Strength Steel (AHSS) and Ultra High Strength Steel (UHSS), where material utilization is at a maximum.

Roll forming features

Benefits

  • For large series roll forming is much more cost efficient than press brake bending
  • Long lengths with very accurate tolerances can be achieved
  • More complex profiles can be produced compared to press brake bending
  • Sharper radii can be achieved through roll forming of high strength steel than during press brake bending

Drawbacks

  • Not possible for few parts. Minimum a slit coil is needed
  • High investment cost
  • High cost for tooling
  • Limited part size (width and depth) of the individual process line(s)

Recommendations

Roll forming is suitable for large series repeatable production with minimum volumes usually in excess of the equivalent of 20,000kg of parts from up to 800mm wide incoming strip feedstock.


Our offer 

SSAB Shape can offer roll forming services from our own centers globally and in addition we have a service partner network that can be utilized. Our offer includes:

  • Heavy duty roll forming lines
  • Lengths up to 21,000mm
  • Thickness < 12.5mm
  • Strip width max 800mm

In many of our service centers we have the possibility to combine roll forming of parts with other metal processing methods, for example tube laser cutting, to fulfil your complete requirements.