Cold reduction of sheet metal

The GROB cold reduction process is based on a straightforward and universally applicable fundamental principle: the total forming effort needed in the reduction process is broken down into numerous forming steps spread along the entire cylindrical length of the zone to be formed. This means that the forces needed to achieve superior forming rates and high degrees of deformation are comparatively low. For example, ready-to-install internal splines can be generated on components made of sheet metal or tubular materials. As its name implies, this technique applied is a strictly forming process during which no chip forming is involved.