Process for producing a grain-oriented electrical steel sheet having improved magnetic properties.

摘要

In the production of a grain-oriented electrical steel sheet by utilizing an AIN main inhibitor and at least twice cold-rolling with a heavy final reduction, improved magnetic properties are stably obtained by controlling the cooling speed (R) in the cooling process of a hot-rolled sheet annealing (R ≧ = 5°C/sec from 600 -200°C) and by inter-pass aging (50 -500°C for I minute or more) during the first cold-rolling.