| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.22 ( May 1990 ) Advanced Technologies of Iron and Steel, Commemorating the 20th Anniversary of the Technical Research Division ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Developments of Grain-Oriented Silicon Steel Sheets with Low Iron Loss Toshio Sadayori, Yoshiaki Iida, Bunjiro Fukuda, Katsuo Iwamoto, Keiji Sato, Yo Shimizu |
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Synopsis : Two approaches for reducing iron losses in grain oriented Si-steel sheets were described. One is a metallurgical approach with reduces sheet thickness, increases Si content, and optimizes grain diameter without deteriorating texture orientation. Increase in C content, hot rolling at low temperature and low speed, and utilization of very fine carbides have been applied for that purpose. The other is a physical approach and is called the "domain refining technique". Plasma-jet (PJ) irradiation has been found to be effective for refining domain wall spacing without deteriorating surface coatings of sheets. PJ irradiation has enabled further loss reduction in thin gauge grain-oriented Si-steel sheets. |
| TextiPDF: 8p./413kbj |