| 发明名称 |
HEAT TREATMENT METHOD FOR RING-SHAPED MEMBER AND HEAT TREATMENT EQUIPMENT FOR RING-SHAPED MEMBER |
| 摘要 |
In a heating step (S1) of inductively heating a steel outer ring (OR) to a target temperature, a plurality of outer rings (OR) retained coaxially by a retaining unit (3) are caused to sequentially pass through an opposing region of a pre-heating coil (22) having a variable output, and through an opposing region of a heating coil (21) having a constant output and being arranged coaxially with the pre-heating coil (22) on an exit side of the pre-heating coil (22). Thus, the plurality of outer rings (OR) are sequentially and inductively heated to the target temperature. |
| 申请公布号 |
US2016230243(A1) |
申请公布日期 |
2016.08.11 |
| 申请号 |
US201415022315 |
申请日期 |
2014.09.08 |
| 申请人 |
NTN CORPORATION |
发明人 |
HIRAOKA Tsuneaki;HIRAYAMA Eri;SUZUKI Shintaro |
| 分类号 |
C21D9/40;C21D9/00;C21D1/58;C21D1/42;C21D1/10 |
主分类号 |
C21D9/40 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A heat treatment method for a ring-shaped member, comprising a heating step of inductively heating a steel ring-shaped member to a target temperature,
the heating step comprising causing a plurality of the steel ring-shaped members, which are retained coaxially by a retaining unit, to sequentially pass through an opposing region of a pre-heating coil having a variable output, and through an opposing region of a heating coil having a constant output and being arranged coaxially with the pre-heating coil on an exit side of the pre-heating coil, to thereby sequentially and inductively heat the plurality of the steel ring-shaped members to the target temperature. |
| 地址 |
Osaka-shi, Osaka JP |
