| 摘要 |
Disclosed is a method for producing oriented electrical steel sheets which contain, by mass percent, C: 0.01-0.10%, Si: 2.5-4.5%, Mn: 0.02-0.12%, Al: 0.005-0.10%, N: 0.004-0.015%, and which further contain Se: 0.005-0.06% and/or S: 0.005-0.06%. In the method, the steel sheet temperature of the full length of coil during cooling after the finish rolling part of hot rolling fulfills T(t) < FDT-(FDT-700) × t / 6 (wherein T(t): steel sheet temperature (degrees Celsius); FDT: end temperature of finish rolling (degrees Celsius); t: time elapsed from the end of finish rolling (seconds)). By means of controlling the steel sheet temperature three seconds after completion of hot rolling to be 650C or greater in the forwardmost 10% of the coil length, an oriented electrical steel sheet with excellent magnetic properties can be obtained across the entire coil length. |
