| 摘要 |
PURPOSE: To attain low core loss and high magnetic flux density by forming the compsn. of a steel into the one contg. specified amounts of C, Si, Mn, Ti, Sb, Zr, Al and rare earth metals, and the balance iron with inevitable impurities. CONSTITUTION: The componental compsn. of a steel is formed of, by weight, <=0.001% C, 1.0 to 2.5% Si, 0.10 to 1.5% Mn, <=15ppm Ti, 0.002 to 0.5% Sb, <=80ppm Zr, 0.2 to 1.5% Al, 2 to 80ppm rare earth metals, and the balance iron with inevitable impurities. This steel is cast to form into a slab, which is, directly or after cooling, reheated, is thereafter subjected to hot rolling, is subjected to cold rolling for one time or >= two times including process annealing and is subsequently subjected to finish annealing. Thus, it can sufficiently meet the requirement of improving the characteristics of the quality of the nonoriented silicon steel sheet. |
