Title:
MOTOR CORE ANNEALING APPARATUS AND MOTOR CORE ANNEALING METHOD
Document Type and Number:
Japanese Patent JP2020117768
Kind Code:
A
Abstract:
To remove more reliably and in a short time strain having generated by punching, and fixing by swaging, fastening with screws and welding, etc. of an electromagnetic steel sheet that composes a motor core.SOLUTION: An annealing apparatus 1 includes: an annular induction coil 10 arranged inside a motor core C to be annealed and concentrically with the motor core C to be annealed; an AC power source 20 for applying alternating current to the induction coil 10; a moving mechanism for changing a relative position of the induction coil 10 and the motor core C to be annealed on a horizontal plane; and a temperature measuring mechanism 16 for measuring a temperature of the motor core C to be annealed, in which the moving mechanism changes the relative position according to a circumferential temperature distribution of the motor core C being annealed which is obtained based on a measuring result by the temperature measuring mechanism 16.SELECTED DRAWING: Figure 3
Inventors:
TAIRA MASATO
Application Number:
JP2019009919A
Publication Date:
August 06, 2020
Filing Date:
January 24, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
C21D9/00; H01F41/02; H05B6/10
Domestic Patent References:
| JP2017110243A | 2017-06-22 | |||
| JPS63248086A | 1988-10-14 | |||
| JP2011225998A | 2011-11-10 | |||
| JPS5815471U | 1983-01-31 | |||
| JPS6074417A | 1985-04-26 | |||
| JPH11216729A | 1999-08-10 |
Attorney, Agent or Firm:
Tetsuo Kanamoto
Koji Hagiwara
Naoki Ogita
Takashi Saito
Takuya Mine
Koji Hagiwara
Naoki Ogita
Takashi Saito
Takuya Mine