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1. 发明授权

EP2902507B1 MANUFACTURING METHOD OF COMMON GRAIN-ORIENTED SILICON STEEL WITH HIGH MAGNETIC INDUCTION 有权
公开(公告)号：EP2902507B1
公开(公告)日：2018-11-28
申请号：EP12885574.9
申请日：2012-12-11
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
IPC分类号： C21D8/12 , C22C38/04 , H01F1/16
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 1.88T, 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.

2. 发明公开

EP2826871A1 HOT ROLLED SILICON STEEL PRODUCING METHOD 有权
标题翻译： HERSTELLUNGSVERFAHRENFÜRWARMGEWALZTEN SILICIUMSTAHL
公开(公告)号：EP2826871A1
公开(公告)日：2015-01-21
申请号：EP12871183.5
申请日：2012-03-29
申请人： Baoshan Iron & Steel Co., Ltd.
发明人： ZHANG, Huawei , WU, Yaping , GONG, Yu , SUN, Yezhong , HEI, Hongxu
IPC分类号： C21D8/02 , B21B37/74
CPC分类号： H01F1/14766 , C21D1/26 , C21D6/00 , C21D6/008 , C21D8/021 , C21D8/041 , C21D8/1205 , C21D8/1216 , C21D8/1244 , C21D9/0081 , C21D9/70 , C21D2201/05 , C22C38/02 , H01F41/00
摘要： A hot rolled silicon steel producing method comprises: silicon steel slab heating process, rough rolling process and finish rolling process. The heating process comprises a pre-heating stage, a heating stage and a soaking stage. The pre-heating stage satisfies the following formula (1). In the formula, VTp is a temperature increasing rate, in the pre-heating stage, whose unit is °C/min; t is a total heating time of the slab in the heating furnace, and t=180-240min; and Tc is an initial temperature when the slab is put into the furnace, whose unit is °C. By using the foregoing formula, the heating process and the rough rolling process are changed, an occurrence rate of edge defects during the production of the hot rolled silicon steel can be reduced, and the hot rolled silicon steel with good surface quality can be produced. V Tp > 220 ⁢ min t × 100 ⁢ ° ⁢ C T C + 200 ⁢ ° ⁢ C × 25 ⁢ ° ⁢ C / min
摘要翻译：热轧硅钢的制造方法包括：硅钢板坯加热工序，粗轧工序和精轧工序。加热过程包括预热阶段，加热阶段和均热阶段。预热阶段满足下式（1）。在配方中，VTp为预热阶段的升温速度，单位为℃/ min; t是加热炉中板坯的总加热时间，t = 180〜240min; Tc是板坯放入炉内时的初始温度，单位为℃。通过使用上述公式，可以改变加热处理和粗轧工序，能够降低热轧硅钢的制造时的边缘缺陷的发生率，能够制造出具有良好的表面质量的热轧硅钢。 V Tp> 220 ¢min t×100 ¢¢¢¢C T C + 200 ¢° ¢C×25 ¢¢¢¢C / min

3. 发明授权

EP2826871B1 HOT ROLLED SILICON STEEL PRODUCING METHOD 有权
公开(公告)号：EP2826871B1
公开(公告)日：2018-10-17
申请号：EP12871183.5
申请日：2012-03-29
申请人： Baoshan Iron & Steel Co., Ltd.
发明人： ZHANG, Huawei , WU, Yaping , GONG, Yu , SUN, Yezhong , HEI, Hongxu
IPC分类号： C21D8/02 , B21B37/74 , C21D6/00 , C21D8/04 , C21D9/00 , C21D9/70
CPC分类号： H01F1/14766 , C21D1/26 , C21D6/00 , C21D6/008 , C21D8/021 , C21D8/041 , C21D8/1205 , C21D8/1216 , C21D8/1244 , C21D9/0081 , C21D9/70 , C21D2201/05 , C22C38/02 , H01F41/00
摘要： A hot rolled silicon steel producing method comprises: silicon steel slab heating process, rough rolling process and finish rolling process. The heating process comprises a pre-heating stage, a heating stage and a soaking stage. The pre-heating stage satisfies the following formula (1). In the formula, VTp is a temperature increasing rate, in the pre-heating stage, whose unit is °C/min; t is a total heating time of the slab in the heating furnace, and t=180-240min; and Tc is an initial temperature when the slab is put into the furnace, whose unit is °C. By using the foregoing formula, the heating process and the rough rolling process are changed, an occurrence rate of edge defects during the production of the hot rolled silicon steel can be reduced, and the hot rolled silicon steel with good surface quality can be produced. V Tp > 220 �¢ min t × 100 �¢ ° �¢ C T C + 200 �¢ ° �¢ C × 25 �¢ ° �¢ C / min

4. 发明公开

EP2902507A1 MANUFACTURING METHOD OF COMMON GRAIN-ORIENTED SILICON STEEL WITH HIGH MAGNETIC INDUCTION 有权
标题翻译：产粮大取向硅钢高磁感过程
公开(公告)号：EP2902507A1
公开(公告)日：2015-08-05
申请号：EP12885574.9
申请日：2012-12-11
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
IPC分类号： C21D8/12 , C22C38/04 , H01F1/16
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 1.88T, 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.

5. 发明公开

EP2623626A1 NON-ORIENTED ELECTRIC STEEL PLATE WITHOUT CORRUGATED FAULT AND PRODUCTION METHOD THEREOF 有权
标题翻译： NICHTORIENTIERTE ELEKTRISCHE STAHLPLATTE OHNE WELLUNGSFEHLER UND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP2623626A1
公开(公告)日：2013-08-07
申请号：EP11827949.6
申请日：2011-04-14
申请人： Baoshan Iron & Steel Co., Ltd.
发明人： ZHANG, Feng , CHEN, Xiao , CAO, Wei , SUN, Yezhong , MA, Changsong , ZHU, Jianru , CHEN, Zhuolei , LIU, Xiandong
IPC分类号： C22C38/06 , C21D8/12 , C21D8/02
摘要： A non-oriented electrical steel sheet without corrugated defect and a manufacturing method thereof is provided, the weight percentage of the chemical composition of the non-oriented electrical steel sheet is that C is no more than 0.005%, Si is 1.2-2.2%, Mn is 0.2-0.4%, P is no more than 0.2%, S is no more than 0.005%, Al is 0.2-0.6%, N is no more than 0.005%, O is no more than 0.005%, and a balance substantially being Fe, a slab can be obtained by hot metal preprocessing, smelting with converter, RH refining, and continuous casting and pouring, wherein a secondary cooling water amount is controlled, the water flowrate of cooling water is controlled to 100-190 1/min, the average superheat of liquid steel in the continuous casting process is controlled to 10-45°C ,the slab is heated and hot rolled; wherein the furnace tap temperature of the slab is 1050-1150 °C , the temperature difference between random two points in the length direction when the slab is heated, is lower than 25 °C , the hot rolling process includes a rough rolling process and a planishing process, the entry temperature in the planishing process is no lower than 970 °C ; the finished non-oriented electrical steel sheet is obtained by acid pickling, cold rolling, annealing and coating. No corrugated defect can be accomplished by controlling the cooling speed of the slab in continuous casting and pouring process, the temperature difference in the length direction of the slab in the heating furnace, and by controlling the temperature drop before planishing the slab.
摘要翻译：本发明提供一种无波纹状缺陷的无方向性电磁钢板及其制造方法，其特征在于，所述无方向性电工钢板的化学组成的重量百分比为C为0.005％以下，Si为1.2〜2.2％ Mn为0.2〜0.4％，P为0.2％以下，S为0.005％以下，Al为0.2〜0.6％，N为0.005％以下，O为0.005以下，余量基本上为是Fe，可以通过热金属预处理，转炉熔炼，RH精炼，连续铸造和浇注获得板坯，其中控制二次冷却水量，将冷却水的水流量控制在100-190 1 / min ，连铸过程中液态钢的平均过热度控制在10-45℃，板坯加热热轧; 其特征在于，板坯的炉膛温度为1050〜1150℃，板坯加热时的长度方向的随机两点之间的温度差低于25℃，热轧工序包括粗轧工序和平整过程中，平整过程中的入口温度不低于970℃; 通过酸洗，冷轧，退火和涂覆获得成品的无取向电工钢板。通过控制连续铸造和浇注过程中板坯的冷却速度，加热炉中板坯长度方向的温差，以及通过控制板坯平整之前的温度降低，可以实现瓦楞纸不良。

6. 发明公开

EP3719160A1 NON-ORIENTED ELECTRICAL STEEL SHEET WITH EXCELLENT MAGNETISM AND MANUFACTURING METHOD THEREFOR 有权
公开(公告)号：EP3719160A1
公开(公告)日：2020-10-07
申请号：EP18884597.8
申请日：2018-07-11
申请人： Baoshan Iron & Steel Co., Ltd.
发明人： ZHANG, Feng , LV, Xuejun , WANG, Bo , LIU, Baojun , ZONG, Zhenyu , SHEN, Kanyi , SUN, Yezhong
IPC分类号： C22C38/02 , C21D8/02
摘要： Disclosed are a non-oriented electrical steel sheet with excellent magnetic properties and a manufacturing method thereof, wherein the mass percentage of the chemical components thereof are: C: 0-0.005%; Si: 2.1-3.2%, Mn: 0.2-1.0%, P: 0-0.2%, Al: 0.2-1.6%, N: 0-0.005%, Ti: 0-0.005%, Cu: 0-0.2%, and the balance of Fe and inevitable impurities; and at the same time, (the S content for forming MnS + the S content for forming Cu x S)/the S content in the steel is required to be less than or equal to 0.2. The process for manufacturing the non-oriented electrical steel sheet of the present invention is simple and convenient, the chemical components of the steel are easy to control, the manufacturing process is stable, and the technical requirements are easy to realize.

7. 发明授权

EP2623626B1 NON-ORIENTED ELECTRIC STEEL PLATE WITHOUT CORRUGATED FAULT AND PRODUCTION METHOD THEREOF 有权
公开(公告)号：EP2623626B1
公开(公告)日：2019-11-20
申请号：EP11827949.6
申请日：2011-04-14
申请人： Baoshan Iron & Steel Co., Ltd.
发明人： ZHANG, Feng , CHEN, Xiao , CAO, Wei , SUN, Yezhong , MA, Changsong , ZHU, Jianru , CHEN, Zhuolei , LIU, Xiandong
IPC分类号： C22C38/06 , C21D8/12 , C21D8/02 , B22D11/18 , B22D11/22 , C21D6/00 , C22C38/00 , C22C38/02 , C22C38/04 , H01F1/16

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