High Intensity Shot Peening

Author:  Phillip M. Winter
Source:  US Patent 3,834,200
Doc ID:  1973054
Year of Publication:  1973
Abstract:  
The present invention relates to a peening flap construction useful for high intensity peening. The present invention provides a high-intensity peening flap construction comprising an elongate strap of a flexible, resilient, tough, shock absorbing, tear-resistant material having a high flexural endurance and shape retention. At least one peening particle support base is mechanically fastened to the elongate strap adjacent one end thereof, which support base is formed of a metal having the ability to withstand high bending and impact stresses while resisting deformation. A plurality of refractory hard, impact fracture resistant peening particles are metallurgically joined to an exposed face of the support base. In use, one or more of the flaps are mounted on a hub with the support base and the peening particles thereon at the ends of the flaps away from the hub. The hub is rotated while the flaps are forced against the substrate to be peened particles to perform their normal peening function, but preventing the normal uncontrolled scattering which occurs in conventional shot peening.