NON-GRAIN-ORIENTED ELECTRICAL STEEL STRIP OR SHEET COMPONENT PRODUCED THEREFROM AND METHOD FOR PRODUCING A NON-GRAIN-ORIENTED ELECTRICAL STEEL STRIP OR SHEET

摘要

The present invention relates to a ferritic steel comprising 1.0 to 4.5% of Si, 2.0% or less of Al, 1.0% or less of Mn, 0.01% or less of C, 0.01% or less of N, % Ti, 0.1% to 0.5% of Ti, 0.1% to 0.3% of P, and the ratio of Ti content (% Ti) to P content (% P) /% P / = 2.0. / RTI The non-oriented electrical steel strip or sheet according to the invention and the parts made from such a sheet or strip for electrical engineering purposes are characterized by increased strength and at the same time good magnetic properties. An NGO sheet or strip according to the present invention can be produced by cold-rolling a hot strip made of steel having the above composition into a cold strip and annealing the cold strip by a final annealing process. In order to emphasize particular properties of the NGO strip or sheet, the present invention provides several variants of this final annealing process.