FIELD: metallurgy.
SUBSTANCE: invention relates to fabrication of textured sheets from electrotechnical steels. A sheet from electrotechnical steel containing wt %: Si - 0,8 … 7 by quantity, Mn - 0,05 … 1, V - 0,0005 … 0,0080, and the content of each of Al, C, N, S and Se is 0,005 or less, the rest - Fe and inevitable impurity, it has the glass film coating obtained from the mixed oxide consisting mainly of forsterite, on the steel sheet surface. When the surface of the secondary film coating formed on the glass film coating surface in the pre-set conditions is studied by method of optical emission spectroscopy in the glow discharge (GDS), it is found that there is the radiation intensity peak B the position of which differs from that of the radiation intensity peak Mg, and the position of the radiation intensity peak B is more far from the steel sheet surface, than that of the radiation intensity peak Mg. The method of sheet fabrication includes the sheet heating at the pre-set temperature of sheet material. And the invention relates to fabrication of textured sheets from electrotechnical steels. A sheet from electrotechnical steel containing wt %: Si - 0,8 … 7 by quantity, Mn - 0,05 … 1, V - 0,0005 … 0,0080, and the content of each of Al, C, N, S and Se is 0,005 or less, the rest - Fe and inevitable impurity, it has the glass film coating obtained from the mixed oxide consisting mainly of forsterite, on the steel sheet surface. When the surface of the secondary film coating formed on the glass film coating surface in the pre-set conditions is studied by method of optical emission spectroscopy in the glow discharge (GDS), it is found that there is the radiation intensity peak B the position of which differs from that of the radiation intensity peak Mg, and the position of the radiation intensity peak B is more far from the steel sheet surface, than that of the radiation intensity peak Mg. The method of sheet fabrication includes the sheet heating at the pre-set temperature of sheet material. And the pre-set temperature value depends on the chemical composition of steel.
EFFECT: increase of adhesion of the glass film coating located on the surface of steel sheet from electrotechnical steel with the strengthened magnetic properties.
5 cl, 13 tbl, 32 dwg
