Spring shot peening machine

rotating tablefor crankshaftsturbine

Shot peening is mainly used for parts from the aviation and space industry as well as the automotive industry. For example, these include springs, drive shafts, crankshafts, gear wheels, connecting rods, steering and gear parts, turbine blades etc. By carrying out this process, the component weight can be reduced whereas the mechanical strength remains the same. Among other things, this leads to weight advantages which cause savings on fuel consumption. Schraubenfedern nach dem Shot Peeing Prozess.Coil springs after the shot peening process. What is happening with the surface during shot peening? In the peripheral zone of the components, that means in the near-surface areas, residual compressive stress is caused by plastic deformation. During this cold working process, the lifetime of the components is increased regarding their fatigue strength. In addition, a higher resistance to stress corrosion and corrosion fatigue can be determined on parts which are subject to high alternating stress. What is the difference between shot peening and stress peening? If shot peening is carried out while applying a certain preload, an additional improvement of the residual stress values can be achieved. This effect is called stress peening. It is scientifically proven that cracks, for example due to corrosion fatigue, never appear in a layer with residual compressive stress. By means of the blasting process, the corrosion resistance increases and the surface of the work pieces is enlarged. This is important for example for bonding of components.