GRAIN-ORIENTED ELECTROMAGNETIC STEEL PLATE AND PRODUCTION METHOD THEREFOR
摘要:
Disclosed is a grain-oriented electrical steel sheet capable of obtaining excellent magnetic properties stably over the entire coil length. A grain-oriented electrical steel sheet includes: a chemical composition containing, in mass%, C: 0.005 % or less, Si: 2.0 % to 4.5 %, and Mn: 0.01 % to 0.5 %, and, in mass ppm, N: 20 ppm or less, each of Se, Te, and O: less than 50 ppm, S: less than 30 ppm, and acid-soluble Al: less than 40 ppm, and Ti: less than 30 ppm, of which 5 ppm or more and 25 ppm or less is acid-soluble Ti, with the balance being Fe and inevitable impurities; and precipitates containing Ti and N with a grain size of 200 nm or more at a frequency of 0.05 grains/mm 2 or more.
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