METHOD OF MAKING FLAT ARTICLE FROM ELECTRIC STEEL AND FLAT ARTICLE MADE FROM ELECTRIC STEEL

摘要

FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy. Method for producing a grain-oriented electrical steel flat product with minimised magnetic loss values comprises following steps: a) preparation of flat article from electrical steel, b) applying a layer of insulation phosphate-containing solution on at least one surface of flat article from electrical steel and annealing deposited layer, after first of step b), said step b) is repeated at least once, as a result of which stacked and annealed phosphate-containing layers of insulation solution form insulation coating, with coating thickness D of up to 3 mcm, specific density r of coating is ≥ 5 g/m, and if thickness D is greater than 3 mcm specific density r of coating is equal to r [g/m] > 3/5 g/mcm/m·D [mcm].EFFECT: to increase tensile stress on surface of flat article from electrical steel and providing optimum magnetic properties.14 cl, 1 tbl, 2 dwg