| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique to implement magnetic domain subdivision more securely in a method for manufacturing a grain-oriented electromagnetic steel sheet that reduces an iron loss by magnetic domain subdivision.SOLUTION: When performing magnetic region subdivision processing in which a laser is irradiated in a direction intersecting a rolling direction of a grain-oriented electromagnetic steel sheet after performing finish annealing on the steel sheet wound into the form of a coil and then performing flattening annealing, the energy density of the laser with which the steel sheet part is irradiated is increased from an inner wound part of the coil at the time of flattening annealing toward an outer wound part. |
