In the process of roll forging, a bar stock, round or flat is placed between die rollers which reduces the cross-section and increases the length to form parts such as axles, leaf springs etc. Roll forgings has a wide spread use. As it can easily be made continuous by the use of multiple roller and dies. Roll forging can also be said to be a type of draw forging process as the workpiece is gradually drawn out into the requisite shape.
Propeller blades, tapered axle shaft shapes, continuous uniform shapes.