PROCESS FOR PRODUCTION OF ORIENTED ELECTROMAGNETIC STEEL SHEET

摘要

A nitriding treatment (step S6) for increasing the N content in a decarburization-annealed steel strip is carried out between the initiation of decarburization annealing (step S4) and the development of secondary re-crystals in finishing decarburization (step S5). In a hot-rolling (step S1), a silicon steel material is maintained at a temperature of 1000 to 800°C for 300 seconds or longer, and subsequently finishing rolling is carried out.