| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a carburized annealed sheet capable of stably producing a product sheet on an industrial scale and a method for producing the same, regarding a method for producing a grain oriented electrical steel sheet used as the material for the iron core of an electrical component. <P>SOLUTION: In the carburized annealed sheet, provided that the number density and average grain diameter of the crystal grains in the ä110}<001> orientation are denoted as N and D, respectively, and the number density and average grain diameter of the crystal grains dispersed from the grains in the ä110}<001> are defined as n and d, 8×N×D<SP>3</SP>>n×d<SP>3</SP>is satisfied. The draft in the final cold rolling is controlled to 85 to 93%, and heating speed at 600 to 800°C in carburizing annealing is controlled to ≥80°C/s. <P>COPYRIGHT: (C)2009,JPO&INPIT |
