| 发明名称 | Sintered valve guide and production method therefor | ||
| 摘要 | A sintered valve guide exhibits a metallic structure having a mixed structure and a hard phase in which hard particles are dispersed in an alloy matrix. The mixed structure consists of pearlite, an Fe—P—C ternary eutectic phase, a ferrite phase, a copper phase, and pores, and the mixed structure consists of, by mass %, 0.075 to 0.525% of P, 3.0 to 10.0% of Cu, 1.0 to 3.0% of C, and the balance of Fe and inevitable impurities. The hard phase is dispersed at 2 to 15 mass % in the mixed structure. | ||
| 申请公布号 | US9212572(B2) | 申请公布日期 | 2015.12.15 |
| 申请号 | US201012967570 | 申请日期 | 2010.12.14 |
| 申请人 | HITACHI POWDERED METALS CO., LTD. | 发明人 | Fujitsuka Hiroki;Kawata Hideaki |
| 分类号 | C22C33/02;F01L3/08;C22C1/10;C22C32/00;F01L1/16 | 主分类号 | C22C33/02 |
| 代理机构 | Oliff PLC | 代理人 | Oliff PLC |
| 主权项 | 1. A sintered valve guide exhibiting a metallic structure having a mixed structure and a hard phase in which hard particles are dispersed in an alloy matrix, the mixed structure consisting of pearlite, an Fe—P—C ternary eutectic phase, a ferrite phase, a copper phase, and pores, the mixed structure consisting of, by mass %, 0.075 to 0.525% of P, 3.0 to 10.0% of Cu, 1.0 to 3.0% of C, and the balance of Fe and inevitable impurities, and the hard phase being dispersed at 2 to 15 mass % in the mixed structure. | ||
| 地址 | Chiba JP | ||