| 摘要 |
<p>PURPOSE:To make it possible to pass an extremely brittle ultrahigh silicon steel sheet into various lines, to enable cold rolling, and to obtain superior magnetic flux density by industrial mass production. CONSTITUTION:A hot rolling plate having a composition consisting of <=0.006% C, 3.7-7.1% Si, <=0.007% S, <=0.0035% total N, and the balance Fe with inevitable impurities is rolled in a scaled state at 150-720 deg.C, box-annealed in a coiled state, descaled, and subjected to annealing for the purpose of recrystallization and grain growth. By this method, an ultrahigh silicon steel sheet used for iron core of electrical equipment as soft-magnetic material and having superior magnetism can stably and efficient be obtained.</p> |
