ROLL FORMING PROCESS: how roll forming machines work(2019)

Roll forming, also spelled rollforming , is a type of rolling involving the continuous bending of a long strip of sheet metal (typically coiled steel) into a desired cross-section.
Roll forming involves uncoiling a long strip of metal, and sending it through several stacks of rollers set up in a long line.
It is performed at room temperature, hence the moniker ‘cold’, which is often dropped.
Roll forming at room temperature maintains or even improves the properties of the feedstock material.
The strip passes through sets of rolls mounted on consecutive stands, each set performing only an incremental part of the bend, until the desired cross-section (profile) is obtained. Roll forming is ideal for producing constant-profile parts with long lengths and in large quantities.
Roll forming is, among the manufacturing processes, one of the simplest . Cold roll forming is a method of shaping hard metals, such as steels and stainless steels.
The strip is fed through an entry guide to properly align the material as it passes through the rolls of the mill, each set of rolls forming a bend until the material reaches its desired shape.

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