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GRAIN ORIENTED SILICON STEEL SHEET EXCELLENT IN COATING FILM PROPERTY AND MAGNETIC PROPERTY, ITS PRODUCTION AND DECARBURIZATION ANNEALING EQUIPMENT USED THEREFOR
GRAIN ORIENTED SILICON STEEL SHEET EXCELLENT IN COATING FILM PROPERTY AND MAGNETIC PROPERTY, ITS PRODUCTION AND DECARBURIZATION ANNEALING EQUIPMENT USED THEREFOR
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机译：用作薄膜特性和磁性特性的晶粒取向硅钢片，其生产和脱碳退火设备均用于此
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PROBLEM TO BE SOLVED: To provide a grain oriented silicon steel excellent in coating film property and iron loss property, its production method and decarburization annealing equipment used for the method. ;SOLUTION: The grain oriented silicon steel sheet, which has a composition consisting of, by weight, ≤0.005% C, 2.0-7.0% Si, the blance Fe with inevitable impurities, is formed on a surface with an oxidized coating film essentially made of forsterite and an insulation coating film further on its surface. A coating film quantity of the oxidized coating film is 1-4 g/m2 per one face, a Si peak intensity obtained by a glow discharge emission analysis conducted from the oxidized coating film surface is ≥1/2 of an Al peak intensity. Further, a depth from an oxidized coating film surface down to a Si peak position is ≥1/10 of depth from an oxidized coating film surface down to a Si peak position, a rate (y%) not causing coating film peeling by 20 mm radius bending and an iron loss property (W) (w/kg) satisfy formula in the following. (y%)≥-122.45 t+112.55 ((t): sheet thickness mm) W (w/kg)≤2.37 t+0.280 ((t): sheet thickness mm).;COPYRIGHT: (C)1999,JPO
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