Title:
STEEL SHEET FOR ROTOR IRON CORE FOR IPM MOTOR, PRODUCTION METHOD THEREFOR, ROTOR IRON CORE FOR IPM MOTOR, AND IMP MOTOR
Document Type and Number:
WIPO Patent Application WO/2017/138181
Kind Code:
A1
Abstract:
This steel sheet for a rotor iron core for an IPM motor is characterized by having: a component composition containing 0.01 exclusive-0.90% by mass of C, 0-3.0% by mass of Si, 0.05-2.5 % by mass of Mn, not more than 0.05% by mass of P, not more than 0.02% by mass of S, 0.005-3.0% by mass of acid-soluble Al, and not more than 5.0% by mass of Si + Al with the remainder consisting of Fe and inevitable impurities; a flux density B8000 of no less than 1.75 T when the strength of a magnetic field is 8000 A/m; a residual magnetic flux density Br of more than 1.30 T after magnetization to 8000 A/m; and a maximum peak height of no more than 1.0 mm when a steel sheet or steel strip having a length of no less than 1 m is placed on a surface plate.
Inventors:
FUJIWARA SUSUMU (JP)
KATAGIRI YUKIO (JP)
IWATSU TOMONAGA (JP)
KATAGIRI YUKIO (JP)
IWATSU TOMONAGA (JP)
Application Number:
PCT/JP2016/076866
Publication Date:
August 17, 2017
Filing Date:
September 12, 2016
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
International Classes:
C22C38/00; C21D8/12; C22C38/06; C22C38/58; H01F1/16
Domestic Patent References:
| WO2013146886A1 | 2013-10-03 |
Foreign References:
| JPS5837122A | 1983-03-04 | |||
| JP2014196535A | 2014-10-16 | |||
| JP2013076159A | 2013-04-25 | |||
| JP2012177188A | 2012-09-13 | |||
| JP2011084761A | 2011-04-28 | |||
| JPS60106915A | 1985-06-12 | |||
| EP2385147A2 | 2011-11-09 | |||
| JP2016180176A | 2016-10-13 |
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
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