What is roll forming and why do I need it?
Fundamentally roll forming is defined as a continuous, high-volume, fabricating process in which a desired shape is formed from a flat strip of metal by passing it through a series of matching pairs of contoured rolls. Only bending occurs in the roll process and does not change the thickness of the metal except for a slight thinning at a bend radius. Roller forming is a continuous process that is extremely economical and efficient particularly when the job requires shaping sections into extended lengths at high volume. The advantages of roll forming are widely recognized and include:
- Processing over 500 feet per minute
- Consistently formed material
- Maintaining extremely finite tolerance range
What are the types of roll materials?
Rolls are generally made from tool steel, the grade being dependent on the expected production and finish of the piece. For routine applications where a smooth finish strip is to be formed or when shapes are formed from hot rolled, unpickled steel, a High Chrome-High Carbon tool steel (AISI D-2) with about 1.5% carbon and 12% chrome is suggested. Tool steel has exceptional wear performance and for the average run of light gauge cold formed sections can be expected to roll several million feet or more before........ click the photo to read more on the B&K Framing Blog