method of manufacturing a grain oriented electrical steel strip of high intensity magnetic field, and

摘要

Process for producing a high magnetic flux density grain-oriented electrical steel sheet comprising; subjecting silicon steel ingot containing 0.005 to 0.1% of carbon, 2.5 to 4.0% of silicon, 0.01 to 0.10% of selenium and one of 0.01 to 0.15% of arsenic, 0.02 to 0.3% of bismuth, 0.02 to 0.3% of lead, and 0.02 to 0.2% of antimony with a sulfur content low enough to be non-harmful to desired magnetic properties to cold rolling in which the reduction of the final cold rolling step is not less than 70%, and then to decarburization and final annealing.