| 发明名称 |
ENGINE EXHAUST VALVE FOR LARGE SHIP AND METHOD FOR MANUFACTURING THE SAME |
| 摘要 |
The present invention relates to an exhaust valve of a diesel engine for a large ship, containing a shall part and an umbrella part that are integrated with each other and made of an Ni—Cr—Al system Ni-base age-precipitated alloy, in which the exhaust valve has a layered structure and hardness of 600 HV or less as a whole, and the layered structure contains a layer formed of an α-Cr phase having a thickness of 150 nm or more that is aged beyond peak mechanical strength. |
| 申请公布号 |
US2016215660(A1) |
申请公布日期 |
2016.07.28 |
| 申请号 |
US201615003641 |
申请日期 |
2016.01.21 |
| 申请人 |
DAIDO STEEL CO., LTD. |
发明人 |
Kawaguchi Shuhei;Uno Koichi;Osaki Mototsugu |
| 分类号 |
F01L3/04 |
主分类号 |
F01L3/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An exhaust valve of a diesel engine for a large ship, comprising:
a shaft part and an umbrella part that are integrated with each other and made of an Ni—Cr—Al system Ni-base age-precipitated alloy, wherein the exhaust valve has a layered structure and hardness of 600 HV or less as a whole, and the layered structure comprises a layer formed of an α-Cr phase having a thickness of 150 nm or more that is aged beyond peak mechanical strength. |
| 地址 |
Nagoya-shi JP |
