公开(公告)号：US20120285584A1

公开(公告)日：2012-11-15

申请号：US13492984

申请日：2012-06-11

申请人： Zitao Wang ,  Bo Wang ,  Shishu Xie ,  Bingzhong Jin ,  Aihua Ma ,  Liang Zou ,  Yuhua Zhu ,  Zhanyuan Hu ,  Xiao Chen

发明人： Zitao Wang ,  Bo Wang ,  Shishu Xie ,  Bingzhong Jin ,  Aihua Ma ,  Liang Zou ,  Yuhua Zhu ,  Zhanyuan Hu ,  Xiao Chen

IPC分类号： C21D8/00

CPC分类号： C22C38/00 ,  C21D1/00 ,  C21D6/008 ,  C21D8/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  H01F1/16

摘要： A manufacture process of non-oriented silicon steel with high magnetic induction includes smelting and casting steel having a chemical composition by weight percent: Si 0.1˜1%, Al 0.005˜1.0%, C≦0.004%, Mn=0.10˜1.50%, P≦0.2%, S≦0.005%, N≦0.002, Nb+V+Ti≦0.006%, and the rest is Fe. The steel is cast into a billet, which is heated and hot-rolled to 1150˜1200° C. into a plate at a finish-rolling temperature 830˜900° C. The plate is cooled to a temperature ≧570° C. and cold-roll flattened at compression ratio 2˜5%. The flattened plate is normalized at temperature not below 950° C. for 30˜180s, and then pickled and cold-rolled into a sheet with thickness of the finished product. The sheet is finish-annealed quickly heating the sheet to 800˜1000° C. at temperature rise rate ≧100° C./s, soaking the heated sheet for 5˜60s at the temperature, and then slowly cooling the sheet to 600˜750° C.

摘要翻译： 具有高磁感应性的非取向硅钢的制造方法包括以重量％计的化学组成的熔炼和铸造钢：Si 0.1〜1％，Al 0.005〜1.0％，C n N eE 0.004％，Mn = 0.10〜1.50％ Pnn; 0.2％，S＆NlE; 0.005％，N＆amp; NlE; 0.002，Nb + V + Ti＆NlE; 0.006％，其余为Fe。 钢被铸造成坯料，将其在830〜900℃的精轧温度下进行加热并热轧至1150〜1200℃。将板冷却至570℃以上的温度， 冷轧压扁比为2〜5％。 将扁平板在不低于950℃的温度下归一化30至180秒，然后酸洗并冷轧成具有成品厚度的片材。 该片材经过完全退火，将片材快速加热至800〜1000℃，升温速度≥100℃/ s，在加热的温度下浸泡5〜60s，然后缓慢冷却至600〜 750°C

公开(公告)号：US20130199675A1

公开(公告)日：2013-08-08

申请号：US13637611

申请日：2011-04-27

申请人： Aihua Ma ,  Bo Wang ,  Shishu Xie ,  Zhanyuan Hu ,  Liang Zou ,  Zitao Wang ,  Yuhua Zhu ,  Jie Huang ,  Bingzhong Jin ,  Xiandong Liu

发明人： Aihua Ma ,  Bo Wang ,  Shishu Xie ,  Zhanyuan Hu ,  Liang Zou ,  Zitao Wang ,  Yuhua Zhu ,  Jie Huang ,  Bingzhong Jin ,  Xiandong Liu

IPC分类号： C21D8/00

CPC分类号： C21D8/005 ,  C21D8/1261 ,  C21D8/1272 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/60 ,  H01F1/16

摘要： A manufacture method of high-efficiency non-oriented silicon steel with excellent magnetic property, which comprises the following steps: 1) smelting and casting; chemical compositions of non-oriented silicon steel, by weight percent, are: C≦0.0040%, Si: 0.1˜0.8%, Al: 0.002˜1.0%, Mn: 0.10˜1.50%, P: ≦0.2%, Sb: 0.04˜0.08%, S≦0.0030%, N≦0.0020%, Ti≦0.0020%, and the rest is Fe and unavoidable inclusions; molten steel in accordance with the above compositions is smelted and then casted into billets; 2) hot-rolling and pickling; heating temperature for slab is 1100° C.˜1150° C. and finish-rolling temperature is 860° C.˜920° C.; after rolling, the hot-rolled product is air cooled, during which air cooling time t: (2+30×Sb %)s≦t≦7 s; thereafter reeling at a temperature ≧720° C. ; 3) cold-rolling; rolling to form cold-rolled plate with target thickness at a reduction ratio of 70˜18%; 4) annealing; heating up the cold-rolled plate to 800˜1000° C. at heating rate of ≧15° C./s, and holding time is 10 s˜25 s. Under the precondition to ensure magnetic properties, this invention implements low cost manufacture of high efficiency electric steel by adding elements advantageous to favorable texture during steel making, controlling contents of adverse elements and coordinating air cooling time control during hot-rolling with high temperature reeling.

摘要翻译： 一种具有优异磁性的高效无取向硅钢的制造方法，包括以下步骤：1）熔炼和铸造; 无取向硅钢的化学组成按重量百分比分别为：C@0.0040％，Si：0.1〜0.8％，Al：0.002〜1.0％，Mn：0.10〜1.50％，P：@ 0.2％，Sb：0.04 〜0.08％，S@0.0030%，N@0.0020%，Ti@0.0020%，其余为Fe和不可避免的夹杂物; 根据上述组成的钢水熔炼，然后铸成坯料; 2）热轧酸洗; 板坯加热温度为1100℃〜1150℃，精轧温度为860℃〜920℃。 轧制后，将热轧制品进行空气冷却，在此空气冷却时间t：（2 + 30×Sb％）s @ t @ 7 s; 然后在> 720℃的温度下卷曲; 3）冷轧; 轧制成型，目标厚度为70〜18％的冷轧板; 4）退火; 将冷轧板加热至800〜1000℃，加热速率> 15℃/ s，保温时间为10秒〜25秒。 在确保磁性能的前提下，本发明通过添加有利于钢铁制造中有利组织的元素，控制不利元素的含量和在高温卷取的热轧过程中协调空气冷却时间控制来实现低成本电钢的低成本制造。

公开(公告)号：US09816152B2

公开(公告)日：2017-11-14

申请号：US13637611

申请日：2011-04-27

申请人： Aihua Ma ,  Bo Wang ,  Shishu Xie ,  Zhanyuan Hu ,  Liang Zou ,  Zitao Wang ,  Yuhua Zhu ,  Jie Huang ,  Bingzhong Jin ,  Xiandong Liu

发明人： Aihua Ma ,  Bo Wang ,  Shishu Xie ,  Zhanyuan Hu ,  Liang Zou ,  Zitao Wang ,  Yuhua Zhu ,  Jie Huang ,  Bingzhong Jin ,  Xiandong Liu

IPC分类号： C21D8/00 ,  C22C38/60 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C21D8/12 ,  H01F1/16

CPC分类号： C21D8/005 ,  C21D8/1261 ,  C21D8/1272 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/60 ,  H01F1/16

摘要： A manufacture method of high-efficiency non-oriented silicon steel with excellent magnetic property includes the steps of smelting a chemical composition of non-oriented silicon steel, by weight percent, is: C≦0.0040%, Si:0.1˜0.8%, Al:0.002˜1.0%, Mn:0.10˜1.50%, P:≦0.2%, Sb:0.04˜0.08%, S≦0.0030%, N≦0.0020%, Ti≦0.0020%, and the rest is Fe and unavoidable inclusions. The molten steel is then cast into billets which are hot-rolled into a hot-rolled product. The heating temperature for the billet is 1100°˜1150° and the finish-rolling temperature is 860°˜920°. The hot-rolled product is then air cooled for a period of time within a range determined by air cooling time t: (2+30xSb %)s≦t≦7 s. The hot-rolled product is reeled at a temperature ≧720° and cold-rolled to form cold-rolled plate with a target thickness at a reduction ratio of 70˜78% followed by heating up the cold-rolled plate to 800˜1000° at heating rate of ≧15°/s, and holding time of 10 s˜25 s.

公开(公告)号：US20130233450A1

公开(公告)日：2013-09-12

申请号：US13823424

申请日：2011-04-14

申请人： Qi Xu ,  Kanyi Shen ,  Guobao Li ,  Weizhong Jin ,  Bingzhong Jin ,  Dejun Su ,  Renbiao Zhang ,  Hai Liu

发明人： Qi Xu ,  Kanyi Shen ,  Guobao Li ,  Weizhong Jin ,  Bingzhong Jin ,  Dejun Su ,  Renbiao Zhang ,  Hai Liu

IPC分类号： C21D8/02

CPC分类号： C21D8/0284 ,  C21D8/0263 ,  C21D8/12 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1261 ,  C21D8/1272 ,  C21D8/1283 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  H01F1/16

摘要： A method for manufacturing an oriented silicon steel product with high magnetic-flux density comprises the following procedures: 1) smelting and casting, wherein the oriented silicon steel is composed of, by weight, 0.035˜0.065% of C, 2.9˜4.0% of Si, 0.05˜0.20% of Mn, 0.005˜0.01% of S, 0.015˜0.035% of Al, 0.004˜0.009% of N, 0.005˜0.090% of Sn, 0.200˜0.800% of Nb, the rest being Fe; and after being smelted, molten steel is secondarily refined and continuous casted into steel slabs; 2) hot rolling; 3) normalizing; 4) cold rolling; 5) decarburization annealing; 6) MgO coating; 7) high temperature annealing: said sheets are firstly heated to 700˜900° C. and then secondarily heated to 1200° C. at temperature rise rate of 9˜17° C./hr and maintained at 1200° C. for 20 hr; 8) coating an insulation layer. According to the present invention, steel sheets can be fully nitrided during high temperature annealing, which can ensure a secondary re-crystallization to take place perfectly, thereby, the oriented silicon steel sheets with high magnetic-flux density can be achieved. The present invention solves the problem of nitriding that is encountered in production of high-magnetic-induction oriented silicon steel by the technique to heat steel slabs to a lower temperature.

摘要翻译： 制造具有高磁通密度的取向硅钢产品的方法包括以下步骤：1）熔炼和铸造，其中取向硅钢的重量为0.035〜0.065％的C，2.9〜4.0％的 Si，0.05〜0.20％的S，0.005〜0.01％的S，0.015〜0.035％的Al，0.004〜0.009％的N，0.005〜0.090％的Sn，0.200〜0.800％的Nb，其余为Fe; 冶炼后，将钢水二次精炼并连续铸造成钢板; 2）热轧; 3）归一化; 4）冷轧; 5）脱碳退火; 6）MgO涂层; 7）高温退火：首先将所述片材加热至700〜900℃，然后以9〜17℃/小时的升温速度二次加热至1200℃，并保持在1200℃20小时 ; 8）涂覆绝缘层。 根据本发明，可以在高温退火时对钢板进行全面的氮化处理，从而能够进行二次再结晶化，从而能够实现高磁通密度的取向硅钢板。 本发明解决了通过将钢板加热到较低温度的技术在生产高磁感应取向硅钢时遇到的氮化问题。