| 摘要 |
<p>Ultra-rapid annealing of nonoriented electrical steel is conducted at a rate above 100 DEG C per second on prior to or as part of the strip decarburization and/or annealing process to provide an improved texture and, thereby, improved permeability and reduced core loss. During the ultra-rapid heating of cold-rolled strip, the recrystallization texture is enhanced by more preferential nucleation of {100}<uvw> and {110}<uvw> oriented crystals and reduced formation of {111}<uvw> oriented crystals. The preferred practice has a heating rate above 262 DEG C per second to a peak temperature between 750 DEG C and 1150 DEG C and held at temperature for 0 to 5 minutes.</p> |
