| 发明名称 |
HEAT TREATING OIL COMPOSITION |
| 摘要 |
A heat-treatment oil composition contains (A) a first base oil with a kinematic viscosity at 40 degrees C. in a range of 5 mm2/s to 60 mm2/s in an amount of 50 mass % to 95 mass % of a total amount of the composition, (B) a second base oil with a kinematic viscosity at 40 degrees C. of 300 mm2/s or more in an amount of 5 mass % to 50 mass %, and (C) an alpha-olefin copolymer. The heat-treatment oil composition according to the invention can reduce distortion unevenness and hardness unevenness accompanying mass-quenching. |
| 申请公布号 |
US2015013843(A1) |
申请公布日期 |
2015.01.15 |
| 申请号 |
US201314380225 |
申请日期 |
2013.03.14 |
| 申请人 |
IDEMITSU KOSAN CO., LTD. |
发明人 |
Noguchi Kenro;Kato Masayuki;Ichitani Katsumi;Kobessho Masahiro;Yamada Masahiro;Takasaki Norihiro |
| 分类号 |
C21D1/58;C10M107/04 |
主分类号 |
C21D1/58 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A heat-treatment oil composition comprising:
(A) a first base oil with a kinematic viscosity at 40° C. in a range of 5 mm2/s to 60 mm2/s in an amount of 50 mass % to 95 mass % of a total amount of the composition; (B) a second base oil with a kinematic viscosity at 40° C. of 300 mm2/s or more in an amount of 5 mass % to 50 mass %; and (C) an alpha-olefin copolymer. |
| 地址 |
Chiyoda-ku, Tokyo JP |
