Title:
GLUE LAMINATION CORE FOR STATORS AND METHOD FOR MANUFACTURING SAME, AND ROTATING ELECTRICAL MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/129946
Kind Code:
A1
Abstract:
Provided is a glue lamination core for stators, which can reduce the iron loss in a rotating electrical machine and has excellent productivity. A glue lamination core for stators, comprising: a plurality of electromagnetic steel sheets which are laminated on each other, and each of which is coated on both surfaces with an insulating coating film; and bonding parts each of which is provided between a set of the electromagnetic steel sheets adjacent to each other in the lamination direction, and can bond the set of the electromagnetic steel sheets to each other. In the glue lamination core for stators, all sets of the electromagnetic steel sheets adjacent to each other in the lamination direction are bonded to one another respectively through the bonding parts, an adhesive agent forming the bonding parts comprises an acrylic compound, an oxidizing agent and a reducing agent and is a two-part acrylic adhesive agent (SGA) composed of a first preparation containing a portion of the acrylic compound and the oxidizing agent and a second preparation containing the remainder of the acrylic compound and the reducing agent, and each of the bonding parts is provided partially between each set of the electromagnetic steel sheets adjacent to each other in the lamination direction.
Inventors:
TAKEDA KAZUTOSHI (JP)
FUJII HIROYASU (JP)
TAKATANI SHINSUKE (JP)
FUJII HIROYASU (JP)
TAKATANI SHINSUKE (JP)
Application Number:
PCT/JP2019/049303
Publication Date:
June 25, 2020
Filing Date:
December 17, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
H02K1/18; H02K15/02
Domestic Patent References:
| WO2017170957A1 | 2017-10-05 |
Foreign References:
| JP2017011863A | 2017-01-12 | |||
| JP2016140134A | 2016-08-04 | |||
| JP2018107852A | 2018-07-05 | |||
| JP2017075279A | 2017-04-20 | |||
| JP2015076970A | 2015-04-20 | |||
| JPH0453937Y2 | 1992-12-18 | |||
| JP2018235869A | 2018-12-17 | |||
| JP2017046442A | 2017-03-02 |
Other References:
JOURNAL OF THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN, 1992
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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