METHOD FOR PRODUCING AN INSULATION COATING ON A GRAIN-ORIENTED ELECTRICAL STEEL FLAT PRODUCT AND ELECTRICAL STEEL FLAT PRODUCT COATED WITH SUCH AN INSULATION COATING

摘要

The invention relates to a method for producing a grain-oriented electrical steel flat product with minimized magnetic loss values wherein the method comprises the following work steps: a) providing an electrical steel flat product, b) applying a layer of a phosphatic insulation solution for at least one surface of the electrical steel flat product and baking the applied layer. In order that the tensile stresses acting on the surface of an electrical steel flat product are increased further by means of such a method, the invention proposes that, after carrying out work step b) for a first time, said work step b) is repeated at least once, such that an insulation layer is obtained from the layers of the phosphatic insulation solution that are successively applied to one another and baked.