公开(公告)号：US20150255211A1

公开(公告)日：2015-09-10

申请号：US14430463

申请日：2012-12-11

申请人： BAOSHAN IRON & STEEL CO., LTD.

发明人： Kanyi Shen ,  Guobao Li ,  Shuangjie Chu ,  Yezhong Sun ,  Huabing Zhang ,  Yongjie Yang ,  Zhuochao Hu ,  Bin Zhao ,  Qi Hu ,  Jie Huang ,  Peili Zhang

IPC分类号： H01F41/02 ,  C21D6/00 ,  C21D3/04 ,  C22C38/02 ,  C23C8/26 ,  C22C38/06 ,  C22C38/00 ,  H01F1/147 ,  H01F1/18 ,  H01F41/32 ,  C21D8/12 ,  C22C38/04

CPC分类号： H01F41/02 ,  C21D3/04 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1205 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1261 ,  C21D8/1272 ,  C21D8/1277 ,  C21D8/1283 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C8/26 ,  H01F1/14783 ,  H01F1/14791 ,  H01F1/18 ,  H01F41/32

摘要： A manufacturing method of oriented silicon steel with magnetic induction B8 of not less than 1.88 T, comprising the following steps: 1) smelting and continuous casting to obtain a slab, wherein the content of N is controlled at 0.002-0.014 wt % 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 steel's surfaces with a magnesium oxide layer and annealing; and 7) applying an insulating coating.

摘要翻译： 具有不低于1.88T的磁感应B8的取向硅钢的制造方法，包括以下步骤：1）熔炼和连铸以获得板坯，其中N的含量在熔炼中控制在0.002-0.014重量％ 阶段; 2）热轧; 3）冷轧; 4）脱碳退火; 5）氮化处理，其中渗透氮含量[N] D被控制以满足下式：328-0.14a-0.85b-2.33c＆nlE; [N] D＆nlE; 362-0.16a-0.94b-2.57c，其中a是 冶炼步骤中Al的含量，单位为ppm; b是N元素的含量，单位为ppm; c为初级晶粒尺寸，单位为μm; 6）用氧化镁层涂覆钢表面并退火; 和7）施加绝缘涂层。