| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing grain oriented silicon steel by which the generation of buckling, crushing, telescoping, adverse, or the like, is prevented without exerting an influence on its magnetic properties, in its turn, crop loss is reduced, and the yield can be improved. SOLUTION: As main agent of a separation agent for annealing to be applied, the one in which, as powder characteristics before slurrying, the angle of repose is 0.61 rad (35 deg.) to 1.17 rad (67 deg.), bulk height is 0.0027 m3/kg (2.7 ml/g) to 0.00733/kg (7.3 ml/g) and the tapping coefficient is 0.47 to 0.68 and, after slurrying, the ratio of the grains with a grain size of >=40 μm is <=5 mass % is used. The coiling tension of a coil after the application of the separation agent for annealing is controlled to 49 MPa (5 kgf/mm2) to 147 MPa (15 kgf/mm2). |
