摘要 |
A manufacturing method of oriented silicon steel with magnetic induction B8 of not less than 1.88T, comprising the following steps: 1) smelting and continuously casting to obtain a slab, wherein the content of N is controlled at 0.002-0.014wt% in the smelting stage; 2) hot-rolling; 3) cold-rolling; 4) decarbonizing and annealing; 5) nitriding treatment, wherein infiltrated nitrogen content [N] D is controlled to satisfy the formula: 328-0.14a-0.85b-2.33c‰¤[N] D ‰¤362-0.16a-0.94b-2.57c, wherein a is the content of Als in the smelting step, with the unit of ppm; b is the content of N element, with the unit of ppm; and c is primary grains size, with the unit of µm; 6) coating a surface with a magnesium oxide coating and annealing; and 7) applying an insulating coating. |
申请人 |
BAOSHAN IRON & STEEL CO., LTD. |
发明人 |
SHEN, KANYI;LI, GUOBAO;CHU, SHUANGJIE;SUN, YEZHONG;ZHANG, HUABING;YANG, YONGJIE;HU, ZHUOCHAO;ZHAO, BIN;XU, QI;HUANG, JIE;ZHANG, PEILI |