公开(公告)号：US20150206633A1

公开(公告)日：2015-07-23

申请号：US14422991

申请日：2012-12-11

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Huabing Zhang ,  Guabao Li ,  Xijiang Lu ,  Yongjie Yang ,  Zhuochao Hu ,  Kanyi Shen ,  Jiaqiang Gao ,  Meihong Wu

IPC: H01F1/147 ,  C23C8/26 ,  C23F17/00 ,  C21D6/00 ,  C22C38/00 ,  C22C38/28 ,  C22C38/06 ,  C22C38/04 ,  C22C38/24 ,  C21D8/12 ,  C22C38/34

CPC classification number: H01F1/14783 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/34 ,  C22C38/60 ,  C23C8/26 ,  C23F17/00 ,  H01F1/18

Abstract: The invention relates to high magnetic induction oriented silicon steel and a preparation method thereof. The oriented silicon steel comprises the following chemical elements by weight percent: 0.035-0.120% of C, 2.9-4.5% of Si, 0.05-0.20% of Mn, 0.005-0.050% of P, 0.005-0.012% of S, 0.015-0.035% of Als, 0.001-0.010% of N, 0.05-0.30% of Cr, 0.005-0.090% of Sn, not more than 0.0100% of V, not more than 0.0100% of Ti, at least one of trace elements of Sb, Bi, Ni and Mo, and the balance of Fe and other inevitable impurities, wherein Sb+Bi+Nb+Mo is 0.0015-0.0250% and (Sb/121.8+Bi/209.0+Nb/92.9+Mo/95.9)/(Ti/47.9+V/50.9) ranges from 0.1 to 15.

Abstract translation: 本发明涉及高磁感应定向硅钢及其制备方法。 取向硅钢按重量百分比计含有以下化学元素：C：0.035-0.120％，Si：2.9-4.5％，Mn：0.05-0.20％，P：0.005-0.050％，S：0.005-0.012％ 0.035％的Al，0.001-0.010％的N，0.05-0.30％的Cr，0.005-0.090％的Sn，不大于0.0100％的V，不大于0.0100％的Ti，Sb中的至少一种微量元素 ，Bi，Ni和Mo，余量为Fe等不可避免的杂质，其中Sb + Bi + Nb + Mo为0.0015〜0.0250％，（Sb / 121.8 + Bi / 209.0 + Nb / 92.9 + Mo / 95.9）/（ Ti / 47.9 + V / 50.9）为0.1〜15。

公开(公告)号：US11459634B2

公开(公告)日：2022-10-04

申请号：US16963334

申请日：2018-06-21

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Shuangjie Chu ,  Guobao Li ,  Yongjie Yang ,  Zipeng Zhao ,  Changsong Ma ,  Kanyi Shen ,  Meihong Wu ,  Yaming Ji ,  Huabing Zhang ,  Zhuochao Hu

IPC: C21D9/46 ,  C21D1/30 ,  C21D8/12 ,  B23K26/0622 ,  B23K26/082 ,  B23K26/06 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  H01F41/02

Abstract: Disclosed is a method for manufacturing stress-relief-annealing-resistant, low-iron-loss grain-oriented silicon steel, the method comprising: carrying out, by means of a pulse laser, scanning grooving on a single surface or two surfaces of a silicon steel sheet after cold rolling, or after decarburizing annealing, or after high temperature annealing or after hot stretching, temper rolling and annealing, and forming several grooves parallel with each other in a rolling direction of the silicon steel sheet, wherein a single pulse time width of the pulse laser is 100 ns or less, and a single pulse peak energy density is 0.05 J/cm2 or more; the energy density of a single scan of a single laser beam is 1 J/cm2 to 100 J/cm2; a beam spot of the pulse laser is a single beam spot or a combination of a plurality of beams spots, the shape of the beam spot is circular or elliptic, and the diameter of the beam spot in a scanning direction is 5 μm to 1 mm, and the diameter thereof in a direction perpendicular to the scanning direction is 5 μm to 300 μm; and when scanning grooving is carried out at the same position on the silicon steel sheet, the product of the number of beam spots of the pulse laser and the scan times is 5 or more.

公开(公告)号：US10236105B2

公开(公告)日：2019-03-19

申请号：US14422991

申请日：2012-12-11

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Huabing Zhang ,  Guobao Li ,  Xijiang Lu ,  Yongjie Yang ,  Zhuochao Hu ,  Kanyi Shen ,  Jiaqiang Gao ,  Meihong Wu

IPC: C21D6/00 ,  C23C8/26 ,  H01F1/147 ,  C21D8/12 ,  C22C38/34 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/24 ,  C22C38/28 ,  H01F1/18 ,  C23F17/00 ,  C22C38/22 ,  C22C38/26 ,  C22C38/60

Abstract: The invention relates to high magnetic induction oriented silicon steel and a preparation method thereof. The oriented silicon steel comprises the following chemical elements by weight percent: 0.035-0.120% of C, 2.9-4.5% of Si, 0.05-0.20% of Mn, 0.005-0.050% of P, 0.005-0.012% of S, 0.015-0.035% of Als, 0.001-0.010% of N, 0.05-0.30% of Cr, 0.005-0.090% of Sn, not more than 0.0100% of V, not more than 0.0100% of Ti, at least one of trace elements of Sb, Bi, Nb and Mo, and the balance of Fe and other inevitable impurities, wherein Sb+Bi+Nb+Mo is 0.0015-0.0250% and (Sb/121.8+Bi/209.0+Nb/92.9+Mo/95.9)/(Ti/47.9+V/50.9) ranges from 0.1 to 15.

公开(公告)号：US11638971B2

公开(公告)日：2023-05-02

申请号：US16496541

申请日：2018-01-24

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Meihong Wu ,  Zipeng Zhao ,  Guobao Li ,  Kanyi Shen ,  Zhuochao Hu ,  Chen Ling ,  Huande Sun ,  Huabing Zhang

IPC: B23K26/364 ,  B23K26/359 ,  B23K26/40 ,  C22C38/02 ,  B23K103/04

Abstract: A grain-oriented silicon steel with low iron loss, wherein the silicon steel is provided with a plurality of grooves on its surface, each of the grooves is 10-60 μm in width and 5-40 μm in depth, and the spacing between adjacent grooves is 1-10 mm. The manufacturing method therefor comprises: scoring the surface of the grain-oriented silicon steel with low iron loss by using a laser in order to form the grooves. The grain-oriented silicon steel with low iron loss can maintain the magnetic domain refining effect in a stress-relief annealing process, and avoid the introduction of more residual stress.

公开(公告)号：US10566119B2

公开(公告)日：2020-02-18

申请号：US14646985

申请日：2012-12-11

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Guohua Yang ,  Xiandong Liu ,  Guobao Li ,  Yongjie Yang ,  Zhuochao Hu ,  Hongxu Hei ,  Jun Zhang ,  Dejun Su ,  Huande Sun ,  Meihong Wu

IPC: H01F1/147 ,  C21D8/12 ,  H01F1/18 ,  C22C38/02 ,  C22C38/00 ,  C22C38/06 ,  C22C38/04 ,  C23C8/80 ,  C21D1/26 ,  C21D3/04 ,  C21D6/00 ,  C21D9/46 ,  C23C8/02 ,  C23C8/26 ,  H01F1/16 ,  H01F41/02 ,  H01F41/32

Abstract: The invention discloses an oriented silicon steel with excellent magnetic properties and a manufacturing method thereof. The present invention obtains the oriented silicon steel with excellent magnetic properties by controlling the area ratio of small crystal grains of D

公开(公告)号：US09905361B2

公开(公告)日：2018-02-27

申请号：US14430463

申请日：2012-12-11

Applicant: BAOSHAN IRON & STEEL CO., LTD.

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

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

CPC classification number: 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

Abstract: 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.

公开(公告)号：US20150255211A1

公开(公告)日：2015-09-10

申请号：US14430463

申请日：2012-12-11

Applicant: BAOSHAN IRON & STEEL CO., LTD.

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

IPC: 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 classification number: 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

Abstract: 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.

Abstract translation: 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。