Title:
ワークの焼き戻し方法、及びこの方法で得られた機械部品
Document Type and Number:
Japanese Patent JP7266426
Kind Code:
B2
Abstract:
To provide a tempering process in which a machine part suitable for use in high-temperature environment can be obtained, and having an excellent productivity.SOLUTION: The work tempering process according to the present invention comprises a heating step S21 for heating a workpiece W, and a cooling step S22 for cooling the workpiece W heated in the heating step S21, and the heating step S21 includes a temperature increasing step S211 of targeting workpiece W by induction heating to heat to a temperature r1, and a temperature maintaining step S213 in which the heating of workpiece W by atmospheric heating is controlled so that the temperature of workpiece W after the temperature increasing is maintained for a predetermined time within the range of a temperature range R having a predetermined width.SELECTED DRAWING: Figure 2
Inventors:
Suzuki Shintaro
Tomoya Murakawa
Dai Saito
Hori Makoto
Tomoya Murakawa
Dai Saito
Hori Makoto
Application Number:
JP2019040276A
Publication Date:
April 28, 2023
Filing Date:
March 06, 2019
Export Citation:
Assignee:
ntn corporation
International Classes:
C21D9/40; C21D1/18; C21D9/00
Domestic Patent References:
| JP2007239043A | ||||
| JP63266019A | ||||
| JP2009084611A | ||||
| JP2010048418A | ||||
| JP2005314756A | ||||
| JP58011742A |
Foreign References:
| WO1997020955A2 |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Takashi Yoshikawa
Tsuyoshi Kumano
Takashi Yoshikawa