发明名称 |
Sintered alloy for valve seat and manufacturing method of exhaust valve seat using the same |
摘要 |
A sintered alloy for a valve seat may be manufactured using a method including: mixing MnS with an alloy powder for a valve seat including C at 0.8-1.2 wt %, Ni at 2.0-4.5 wt %, Cr at 3.0-5.0 wt %, Mo at 16.0-20.0 wt %, Co at 9.0-13.0 wt %, V at 0.05-0.15 wt %, S at 0.2-0.8 wt %, Fe, and additional inevitable impurities; making a first shape by forming the mixed materials; pre-sintering the first formed shape; making a secondary shape by re-pressing the first pre-sintered shape; main-sintering the secondary shape; and tempering the main-sintered secondary shape. |
申请公布号 |
US9175584(B2) |
申请公布日期 |
2015.11.03 |
申请号 |
US201213718373 |
申请日期 |
2012.12.18 |
申请人 |
HYUNDAI MOTOR COMPANY;KIA MOTORS CORPORATION |
发明人 |
Lee Philgi;Kim Gyuhwan;Park Jae Suk;Kim Ki Bum;Shin Chang-Jin |
分类号 |
B22F3/16;F01L3/02;B22F5/00;C22C33/02;B22F3/24 |
主分类号 |
B22F3/16 |
代理机构 |
Morgan, Lewis & Bockius LLP |
代理人 |
Morgan, Lewis & Bockius LLP |
主权项 |
1. A manufacturing method of a valve seat, the method comprising:
mixing MnS with an alloy powder for the valve seat comprising C at 0.8-1.2 wt %, Ni at 2.0-4.5 wt %, Cr at 3.0-5.0 wt %, Mo at 16.0-20.0 wt %, Co at 9.0-13.0 wt %, V at 0.05-0.15 wt %, S at 0.2-0.8 wt %, Fe, and additional inevitable impurities; making a first shape by forming the mixed materials; pre-sintering a first formed shape; making a secondary shape by pressing a first pre-sintered shape; main-sintering the secondary shape; and tempering the main-sintered secondary shape. |
地址 |
Seoul KR |