COATING FOR ORIENTED SILICON STEEL COATING LAYER, AND ORIENTED SILICON STEEL PLATE AND MANUFACTURING METHOD THEREFOR

WIPO Patent Application WO/2023/134740

A1

Provided is a coating, which comprises a phosphate, colloidal silicon dioxide and a chromate compound, wherein the phosphate comprises magnesium dihydrogen phosphate and aluminum dihydrogen phosphate, and the molar ratio of Al to Mg in the phosphate is 0.02-0.15. Provided is an oriented silicon steel plate, which comprises a substrate and a coating layer on a surface of the substrate, wherein the coating layer is formed by the coating. Provided is a manufacturing method for the oriented silicon steel plate, which method comprises the steps of: coating the surface of a substrate with a coating, and then subjecting same to a sintering treatment, wherein the plate temperature during the sintering treatment is 800-880ºC. The coating layer formed by the coating can endow the oriented silicon steel plate with higher tension and better heat resistance, and has good promotion prospects and application effects.

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JI YAMING (CN)
LING CHEN (CN)
LI GUOBAO (CN)
YANG YONGJIE (CN)
WU MEIHONG (CN)
ZHAO ZIPENG (CN)
MA CHANGSONG (CN)

PCT/CN2023/072059

July 20, 2023

January 13, 2023

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BAOSHAN IRON & STEEL (CN)

C09D1/00; C23C22/07; C23C22/20

WO2017105111A1

2017-06-22

KR20130055912A	2013-05-29
CN106243791A	2016-12-21
CN104530782A	2015-04-22
CN111961359A	2020-11-20
JP2006142642A	2006-06-08

WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)

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