Reduction of iron loss in thin grain-oriented silicon steel sheets

We investigated the effect of the intermediate annealing conditions on the grain textures and the magnetic properties in thin grain-oriented silicon steel sheets produced by the three-stage rolling method. It was found that the lower the intermediate annealing temperature is, the better the [001] orientation is achieved. In addition, the reduction of the intermediate annealing temperatures improves dc magnetic properties (B₈, H_c) and enables to reduce the iron loss in thin silicon steels. The measured iron loss W13/50 under the applied tensile strength of 2 kg/mm² was 0.28 W/kg, which is less than that of the conventional (300 μm) grain-oriented silicon steels by about 50%