| 发明名称 | Air-hardenable bainitic steel part | ||
| 摘要 | A method of producing a forged steel part is disclosed. The method includes providing a steel billet that can be selectively hardened to different hardness levels by varying the air cooling rate. The method also includes heating the steel billet to an austenization temperature of the steel billet. The method further includes hot forging the steel billet to form the steel part including a first region and a second region. The method yet further includes selectively cooling the hot forged steel part by air cooling the first region at a first cooling rate and air cooling the second region at a second cooling rate that is less than the first cooling rate. | ||
| 申请公布号 | US9440693(B2) | 申请公布日期 | 2016.09.13 |
| 申请号 | US201414220971 | 申请日期 | 2014.03.20 |
| 申请人 | Caterpillar Inc. | 发明人 | Liu Tianjun;Kiser Matthew Thomas |
| 分类号 | C21D8/00;C22C38/00;C22C38/02;C22C38/04;C22C38/18;B62D55/20;C21D9/00;C22C38/12;C22C38/14;C22C38/22;C22C38/24;C22C38/28;C22C38/32;C22C38/34;C22C38/38;C21D7/13 | 主分类号 | C21D8/00 |
| 代理机构 | Procopio, Cory, Hargreaves & Savitch LLP | 代理人 | Procopio, Cory, Hargreaves & Savitch LLP |
| 主权项 | 1. A method of producing a forged steel part, comprising: providing a steel billet having a composition including, on a weight basis: Carbon: 0.25-0.50 weight percent,Manganese: 1.30-3.00 weight percent, andSilicon: 0.30-2.50 weight percent; heating the steel billet to an austenization temperature of the steel billet; hot forging the steel billet to form the steel part including a first region and a second region; and selectively cooling the hot forged steel part by air cooling the first region at a first cooling rate and air cooling the second region at a second cooling rate that is less than the first cooling rate. | ||
| 地址 | Peoria IL US | ||