Roll Forming Processes for High Strength Steel Components

Roll forming is a continuous cold‐forming technique in which a steel strip is progressively bent by a succession of paired rolls to achieve a predefined cross‐section. Owing to its ability to produce long lengths of uniform or variable profiles with minimal material waste, this process is widely adopted in the manufacture of automotive crash and structural components, commercial vehicle beams and architectural sections. Advances in material science have led to the increasing use of high strength steels, which offer improved weight‐to‐strength ratios but pose challenges related to limited ductility and elevated springback. To address these issues, novel process variants such as flexible roll forming and incremental shape rolling have been introduced to control local strain distributions, mitigate flange wrinkling and manage residual stresses. Integration with numerical simulation, in‐line sensing and adaptive tooling has further enhanced profile accuracy, expanded achievable geometries and reduced setup times, underscoring the global importance of roll forming for lightweight, high‐performance steel structures.

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Roll Forming Processes for High Strength Steel Components publication trend

The graph below shows the total number of articles in roll forming processes for high strength steel components across all publications each year (not limited to Nature Index journals).

Technical terms

Roll forming: Continuous cold‐forming process in which a metal strip is incrementally bent through a series of roll stands to achieve a target cross‐section.

High strength steel: Steel grades with elevated yield strengths (typically >350 MPa) achieved via controlled alloying and microstructural engineering, offering high load-bearing capacity at reduced weight.

Flexible roll forming (FRF): Variant of roll forming using computer-controlled rolls that move to produce variable cross-sections along the length of a profile.

Incremental shape rolling (ISR): Technique that sequentially forms complex features—such as flanges or top-hat sections—over multiple passes to distribute strain and prevent local defects.

Flange wrinkling: Undesirable out-of-plane deformation in sheet edges or flanges caused by compressive stresses exceeding the stability limit during forming.

End flare: Profile distortion at the exit of a roll forming mill, arising from the release of residual stresses accumulated during incremental bending.

References

1. Incremental shape rolling of top-hat shaped automotive structural and crash components. Journal of Materials Processing Technology (2023).
2. Flexible roll forming of surface developable profiles from Dual Phase steel. Thin-Walled Structures (2024).
3. The origin of end flare in roll formed profiles. International Journal of Material Forming (2021).