Patent ID: 9637805
Date: 2017-05-02
CPC Classifications: C21D,C22C,H01F

Claim:
1. A method for producing a non-grain-oriented electrical steel strip or sheet, in which the following production steps are carried out: a) providing a hot strip which consists of a steel comprising, in addition to iron and unavoidable impurities, (in wt. %) Si: 1.0-4.5%, Al: up to 2.0%, Mn: up to 1.0%, C: up to 0.01%, N: up to 0.01%, S: up to 0.012%, Ti: 0.1-0.5%, P: 0.1-0.3%, wherein 1.0≦% Ti/% P≦2.0 applies for the % Ti/% P ratio of the Ti content % Ti to the P content % P; b) cold rolling the hot strip into a cold strip and c) final annealing the cold strip, wherein during final annealing the cold strip passes through a short-term annealing process performed in a single pass through a single continuous annealing furnace, comprising 1) firstly annealing the cold strip in a first annealing stage over an annealing period of 1-100 seconds at an annealing temperature of at least 900° C. and at most 1150° C., and then 2) annealing the cold strip in a second annealing stage over an annealing period of 30-120 seconds at an annealing temperature of 500-850° C.