SHEET OF ELECTRIC STEEL WITH AN INSULATING COATING Russian patent published in 2019 - IPC C23C22/00 H01F1/18 

Abstract RU 2684797 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to a sheet from electrical steel with an insulating coating, excellent in suturing ability and dust resistance, wherein the insulating coating does not contain any chromium compound. Disclosed sheet comprises a sheet of electrical steel and an insulating coating formed thereon, comprising Si and an organic resin in form of particles, wherein the organic resin contains primary particles having an average size of primary particle of 1.0 mcm or less, and from 5 % or more to 50 % or less of primary particles of organic resin are agglomerated particles. At that, insulating coating contains Fe and ratio of Fe content to Si content, expressed in the form of Fe/Si, ranges from 0.01 to 0.6 in molar ratio, and the ratio of the weight of the organic component in the insulating coating in terms of C to the sum of the Fe weight in the coating in terms of Fe2O3 and weight of Si in coating in terms of SiO2 in insulating coating, expressed in form of C/(Fe2O3+SiO2) ranges from 0.05 or more to 0.8 or less.

EFFECT: sheet from electrical steel with insulating coating is proposed.

6 cl, 4 tbl

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RU 2 684 797 C1

Authors

Muramatsu, Naoki

Nakagawa, Nobuko

Sashi, Kazumichi

Tada, Chiyoko

Dates

2019-04-15Published

2016-04-05Filed