| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of producing a stable 100} texture silicon steel sheet in which the 100} texture is stably and sufficiently developed and excel lent in magnetic properties in a producing method in which final annealing by high temperature annealing followed by decarburization or decarburization and the removal of Mn is executed after cold rolling for obtaining a 100} texture silicon steel sheet. SOLUTION: Steel containing 1.5 to 4.5% Si, 0.20 to 2.0% Mn and 0.01 to 0.20% C is cold-rolled into a steel sheet whose surface roughness is <=0.3μm by the arithmetic average roughness Ra and is subjected to tight coil annealing or laminate annealing by using a separation material for annealing containing decarburization promoting substance or decarburization promoting substance and Mn removal promoting substance. Preferably, the cold rolling stage includes process annealing, and, more preferably, the atmosphere at the time of the final annealing is controlled the pressure-reduced state. |
