 A variety of automatic and hand-fed fillet rolling equipment and skilled personnel allows this all-important process to be accomplished in all parts needing cold working of the head-to-shank radius. In aerospace fasteners, this cold working is needed to enhance the performance of fatigue rated screws and bolts. Precise and consistent application of the fillet rolling process pressures and revolutions as well as excellent dimensional control produce parts which are both dimensionally correct and capable of passing fatigue testing up to 2,000,000 cycles. |
