| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a projection member for shot-peening, capable of attaining stable high hardness while restraining material cost. SOLUTION: In a projection member manufacturing process S10, steel having quenching properties is used as a material, and in a quenching process S20, granular material 4 subjected to quenching by a water atomizing method is formed. Subsequently, in a tempering process S30, the granular material 4 is tempered at a predetermined temperature (130-230°C, more preferably, 160-200°C) for a predetermined period in a heating furnace 5. Further, in a work-hardening process S40, the granular material 4 is projected on and collided with a target material 7 using a shot-peening machine 6 to perform work-hardening to apply stress to the granular material 4. COPYRIGHT: (C)2010,JPO&INPIT |
