FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, namely to textured electrical steel sheet used as material of iron core for low-noise transformers. Steel surface is coated with insulating film with chemical composition containing Si, P, O and at least one element selected from Mg, Ca, Ba, Sr, Zn, Al, Mn and Co. Insulating film has degree of crystallinity equal to 20 % or more. Minimum tension applied to sheet steel by insulating film at temperature in range from 100 °C to 200 °C is 10 MPa or more, and static friction coefficient of insulating film makes 0.21 to 0.50.
EFFECT: reduced level of transformer noise.
7 cl, 3 tbl, 3 ex
| Title |
Year |
Author |
Number |
| TEXTURED ELECTROMAGNETIC STEEL SHEET AND METHOD OF FABRICATED TEXTURED ELECTROMAGNETIC STEEL SHEET |
2017 |
- Umada Takumi
- Takajo Shigehiro
- Terashima Takashi
- Takashima Minoru
- Hayakawa Yasuyuki
|
RU2706941C1 |
| TEXTURED ELECTRICAL STEEL SHEET AND METHOD OF ITS PRODUCTION |
2018 |
- Terashima Takashi
- Kokufu Karin
- Takamiya Toshito
|
RU2736247C1 |
| TEXTURED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCTION OF TEXTURED ELECTRICAL STEEL SHEET |
2017 |
- Umada Takumi
- Takajo Shigehiro
- Terashima Takashi
|
RU2716271C1 |
| ELECTROTECHNICAL STEEL SHEET WITH ORIENTED STRUCTURE, ITS MANUFACTURING METHOD AND THE TRANSFORMER NOISE CHARACTERISTICS PREDICTION METHOD |
2016 |
- Omura, Takeshi
- Inoue, Hirotaka
- Okabe, Seiji
|
RU2676372C1 |
| TEXTURED ELECTRIC STEEL PLATES AND METHOD OF ITS MANUFACTURING |
2014 |
- Toda, Hiroaki
- Takajo, Shigehiro
|
RU2661696C1 |
| METAL WITH APPLIED COATING, WORKING SOLUTION FOR PRODUCING COATING AND METHOD FOR PRODUCTION OF METAL WITH APPLIED COATING |
2017 |
- Terashima Takashi
- Watanabe Makoto
- Takamiya Toshito
|
RU2717618C1 |
| TEXTURED ELECTROMAGNETIC STEEL SHEET AND METHOD OF PRODUCING TEXTURED ELECTROMAGNETIC STEEL SHEET |
2017 |
- Umada Takumi
- Takajo Shigehiro
- Terashima Takashi
|
RU2709911C1 |
| TREATMENT SOLUTION FOR PRODUCING AN INSULATING COATING AND A METHOD OF PRODUCING A METAL HAVING AN INSULATING COATING |
2016 |
- Terashima, Takashi
- Suehiro, Ryuichi
- Watanabe, Makoto
- Takamiya, Toshito
|
RU2689353C1 |
| TRANSFORMER CORE |
2018 |
- Okabe Seiji
- Omura Takeshi
- Inoue Hirotaka
|
RU2724649C1 |
| IRON CORE OF TRANSFORMER |
2019 |
- Omura Takeshi
- Inoue Hirotaka
- Okabe Seiji
|
RU2744690C1 |
