| 发明名称 |
Shot Peening Method with Which High Compressive Residual Stress is Obtained |
| 摘要 |
A shot peening process involves the steps of providing a steel member having a surface with a Vickers hardness of 920 HV or more and projecting a shot against the steel member, the shot having a Vickers hardness of 1000 HV or more and a density of 5.5 Mg/m3 or more. The shot satisfies the relationship HVshot≧0.4×HVsteel+620, where HVshot is the Vickers hardness (HV) of the shot, and HVsteel is the Vickers hardness (HV) of the surface of the steel member. The resulting steel member has an unprecedentedly high compressive residual stress of 2,200 MPa or more. |
| 申请公布号 |
US2016107292(A1) |
申请公布日期 |
2016.04.21 |
| 申请号 |
US201414787336 |
申请日期 |
2014.04.28 |
| 申请人 |
SANYO SPECIAL STEEL CO., LTD. |
发明人 |
Sawada Toshiyuki |
| 分类号 |
B24C1/10 |
主分类号 |
B24C1/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A shot peening process comprising the steps of:
providing a steel member having a surface with a Vickers hardness of 920 HV or more; and projecting a shot excluding cemented carbide against the steel member, the shot having a Vickers hardness of 1000 HV or more and a density of 5.5 Mg/m3 or more, and the shot satisfying the following relationship:
HVshot≧0.4×HVsteel+620 wherein HVshot is the Vickers hardness (HV) of the shot, and HVsteel is the Vickers hardness (HV) of the surface of the steel member. |
| 地址 |
Hyogo JP |
