| 摘要 |
The invention relates to a method for producing a grain-oriented electrical steel strip or sheet. The slab temperature of a thin slab, which consists of a steel comprising (in wt.%) Si: 2 - 6.5%, C: 0.02 - 0.15%, S: 0.01 - 0.1%, Cu: 0.1 - 0.5%, the Cu-to-S content proportion %Cu/%S being > 4, Mn: up to 0.1%, the Mn-to-S content proportion %Mn/%S being < 2.5, and optionally contents of N, Al, Ni, Cr, Mo, Sn, V, Nb, is homogenized at 1000 - 1200 °C. The thin slab is hot-rolled into a hot strip with a thickness of 0.5 - 4.0 mm at an initial hot-rolling temperature <= 1030 °C and a final hot-rolling temperature >= 710 °C and with a respective thickness reduction of >= 40% in both the first as well as the second hot-forming pass. The hot strip is cooled and coiled into a coil, said hot strip being cold-rolled into a cold strip with a final thickness of 0.15 - 0.50 mm. An annealing separator is applied onto the annealed cold strip, and a final annealing process of the cold strip which is provided with the annealing separator is carried out in order to form a Goss texture. |
