Roll forming is done at room temperature, preserving the metal’s surface finish and structural integrity. The gradual bending ensures minimal internal stress and distortion.
Instead of shaping the metal in a single step, roll forming divides the process into multiple stages. Each roller station performs a small part of the bend, allowing complex shapes to be formed efficiently and accurately.
Roll forming is designed for high-volume, continuous production. Coiled metal is fed into the machine and exits as a finished profile, often with integrated punching, cutting, or notching steps.
Roll forming works with a variety of ductile sheet metals, such as:
Galvanized or cold-rolled steel
Aluminum
Copper
Stainless steel
Brass
The material must have good formability and a consistent thickness for accurate shaping.