Roll forming is a net shape process that displaces or squeezes material into tools or dies. The material displaced in the form rolling process is shaped into various types of geometries. Like all cold forming processes, roll forming work hardens the part (increases the tensile strength) by producing a grain structure that follows the contour of the part and does not produce scrap.
Even though thread rolling is the most common type of roll forming, other applications include forming of knurls, grooves, chamfers, pointing, radii, etc. In these rolling processes however, generally the displaced material is restricted and/or elongated while holding the original blank diameter.
The cost and product advantages of roll forming are numerous. Material cost savings, improved part strength, consistent quality and reduced manufacturing costs are supplemental to the benefits already derived on the cold formed blank.
Chamfer, Pointing & Radii Forming
In these roll forming techniques, the outside diameter of the part is usually confined and the displaced material is forced into the overall length of the part.Top of Page