Verbesserter Träger für Drehhämmerteilchen und Verfahren zu dessen Herstellung

摘要

Previously known peening particle supports (10) fail under cyclic stresses encountered during peening operations. An improved high-intensity rotary peening particle support (10) of the type having a plurality of peening particles (20) metallurgically secured to an exposed face thereof is presented, the support having a base composition consisting essentially of from 0.08 to 0.34 weight percent carbon, the balance iron, and a Ni-enriched layer which provides a hard, wear resistant surface. A method of producing such a support is also described, the method including cold forming a peening particle support (10) base composition as described, stress relieving, metallurgically joining peening particles (20) to an exposed face of the support, austenitizing, quenching, and tempering the support (10) to form a support (10) having a Ni-enriched layer which is harder than the base composition.