公开(公告)号：US20130299049A1

公开(公告)日：2013-11-14

申请号：US13988738

申请日：2011-04-28

申请人： Meihong Wu ,  Weizhong Jin ,  Huande Sun ,  Guohua Yang ,  Kanyi Shen ,  Jie Huang ,  Deyang Hu ,  Guobao Li

发明人： Meihong Wu ,  Weizhong Jin ,  Huande Sun ,  Guohua Yang ,  Kanyi Shen ,  Jie Huang ,  Deyang Hu ,  Guobao Li

IPC分类号： C21D8/00

CPC分类号： C21D8/005 ,  C22C38/02

摘要： A method for manufacturing a grain-oriented silicon steel having excellent magnetic performance, comprising steps as follows 1)conventionally melting and casting into a steel blank; 2) heating the steel blank and hot rolling the same into a strip of steel; 3)normalizing process; carrying out the normalizing process having two stages, wherein the strip is firstly heated to 1100˜1200° C., then cooled to 900˜1000° C. within 50˜200 s; and next, the strip is rapidly cooled in water having a temperature of 10-100; in this period, a tension force is applied to the strip of steel, the strip of steel in the temperature range of 900 ° C.˜500° C. has a stress of 1˜200N/mm2; 4)cold rolling, i.e. carrying out a primary cold rolling, or a double cold rolling with intermediate annealing; 5)carrying out primary recrystallizing annealing, then coating an annealing separator, whose main composition is MgO, to carry out final product annealing comprising secondary recrystallizing annealing and purifying annealing. The invention optimizes the content and distribution of martensite in the steel plate after normalization by adjusting the tension force applied to the steel plate while normalization transformation, so as to make the content of martensite in the range ensuring a better magnetic performance of the final product and to optimize the magnetic performance of final products.

摘要翻译： 一种具有优异磁性能的晶粒取向硅钢的制造方法，包括以下步骤：1）通常熔融铸造成钢坯; 2）加热钢坯，并将其热轧成钢带; 3）归一化过程; 进行两阶段的归一化处理，首先将条带加热至1100〜1200℃，然后在50〜200s内冷却至900〜1000℃; 然后将条带在温度为10-100℃的水中快速冷却; 在这段时间内，对钢带施加张力，在900〜500℃的温度范围内，钢带的应力为1〜200N / mm2; 4）冷轧，即进行一次冷轧，或进行中间退火的双层冷轧; 5）进行一次再结晶退火，然后涂覆其主要组成为MgO的退火分离剂，进行包括二次再结晶退火和纯化退火的最终产品退火。 本发明通过调整在正常化转变时施加到钢板上的张力来使标准化后的钢板中马氏体的含量和分布优化，从而使得马氏体含量在确保最终产品的更好磁性能的范围内; 以优化最终产品的磁性能。

公开(公告)号：US20130090876A1

公开(公告)日：2013-04-11

申请号：US13643371

申请日：2011-04-12

申请人： Meihong Wu ,  Weizhong Jin ,  Huande Sun ,  Guohua Yang ,  Kanyi Shen ,  Jie Huang ,  Guobao Li

发明人： Meihong Wu ,  Weizhong Jin ,  Huande Sun ,  Guohua Yang ,  Kanyi Shen ,  Jie Huang ,  Guobao Li

IPC分类号： G06F17/13

CPC分类号： G06F17/13 ,  G01N27/72 ,  G01R33/0064

摘要： A method for detecting electromagnetic property of oriented silicon steel, the method comprises: measuring Euler angles of each of crystal grains in a specimen by use of metallographic etch-pit method; calculating orientation deviation angle θi (degree) of the crystal grain; combining area Si (mm2) of the crystal grain and correction coefficient X of element Si (X=0.1˜10 T/degree); correcting on the basis of the magnetic property B0 (saturation magnetic induction, T) of single-crystal material by using these parameters (θi, Si, X), formula for correcting is B 8 = - 0.015 × X × ∑ n = 1 i  S i   θ i  ∑ n = 1 i  S i + ( B 0 - 0.04 ) ( 1 ) ; obtaining electromagnetic property B8 of the oriented silicon steel by the above calculations. The present invention can implement detection of electromagnetic property of a specimen under the circumstances that there is no magnetism measuring device or that magnetism measuring devices cannot be used due to reasons such as weight and size of the specimen being too small or surface quality of the specimen being poor.

摘要翻译： 一种用于检测取向硅钢的电磁特性的方法，该方法包括：使用金相蚀刻法测量样品中每个晶粒的欧拉角; 计算取向偏差角度;晶粒i（度）; 晶粒的面积Si（mm2）和元素Si的校正系数X（X = 0.1〜10T /度）; 通过使用这些参数（＆amp; i，Si，X），基于单晶材料的磁特性B0（饱和磁感应，T）进行校正，校正公式为B 8 = -0.015×X×Σn = 1我是我的老师 i≒Σn = 1 i S i +（B 0 - 0.04）（1）; 通过上述计算得到取向硅钢的电磁特性B8。 本发明可以在没有磁测量装置的情况下实现试样的电磁特性的检测，或者由于试样的重量和尺寸或样品的表面质量等原因，不能使用磁性测定装置 穷人

公开(公告)号：US09038429B2

公开(公告)日：2015-05-26

申请号：US13142955

申请日：2009-12-31

申请人： Guobao Li ,  Pijun Zhang ,  Yongjie Yang ,  Kanyi Shen ,  Zhuochao Hu ,  Peiwen Wu ,  Weizhong Jin ,  Quanli Jiang

发明人： Guobao Li ,  Pijun Zhang ,  Yongjie Yang ,  Kanyi Shen ,  Zhuochao Hu ,  Peiwen Wu ,  Weizhong Jin ,  Quanli Jiang

IPC分类号： C21D8/12 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  H01F1/147 ,  B21B1/36 ,  B21B3/00 ,  B21B9/00 ,  C21D1/28

CPC分类号： C21D8/12 ,  B21B1/36 ,  B21B3/00 ,  B21B9/00 ,  C21D1/28 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  H01F1/14775

摘要： The invention provides a method for producing grain-oriented silicon steel with single cold rolling, comprising: 1) smelting, refining and continuous casting to obtain a casting blank; 2) hot rolling; 3) normalization, i.e. normalizing annealing and cooling; 4) cold-rolling, i.e. single cold rolling at a cold rolling reduction rate of 75-92%; 5) decarburizing annealing at 780-880° C. for 80-350 s in a protective atmosphere having a due point of 40-80° C., wherein the total oxygen [O] in the surface of the decarburized sheet: 171/t≦[O]≦313/t (t represents the actual thickness of the steel sheet in mm), the amount of absorbed nitrogen: 2-10 ppm; 6) high temperature annealing, wherein the dew point of the protective atmosphere: 0-50° C., the temperature holding time at the first stage: 6-30 h, the amount of absorbed nitrogen during high-temperature annealing: 10-40 ppm; 7) hot-leveling annealing. The invention may control the primary recrystallization microstructure of steel sheet effectively by controlling the normalization process of hot rolled sheet to form sufficient favorable (Al, Si)N inclusions from nitrogen absorbed by slab during decarburizing annealing and low-temperature holding of high-temperature annealing, facilitating the generation of stable, perfect secondary recrystallization microstructure of the final products. In addition, the invention avoids the impact of nitridation using ammonia on the underlying layer in prior art, and thus the formation of a good glass film underlying layer is favored.

摘要翻译： 本发明提供一种单次冷轧生产晶粒取向硅钢的方法，包括：1）熔炼，精炼和连续铸造得到铸坯; 2）热轧; 3）归一化，即归一化退火和冷却; 4）冷轧，即以75-92％的冷轧压下率进行单次冷轧; 5）在适当点为40-80℃的保护气氛中，在780-880℃下进行80-350秒的脱碳退火，其中脱碳片表面的总氧[O]为171 / t·nlE ; [O]＆nlE; 313 / t（t表示钢板的实际厚度，单位为mm），吸附氮量：2-10ppm; 6）高温退火，其中保护气氛的露点为0-50℃，第一阶段的保温时间为6-30h，高温退火时吸收的氮量为10-40 ppm; 7）热水平退火。 本发明可以通过控制热轧板的归一化过程来控制钢板的一次再结晶微观结构，从而在脱碳退火和低温保持低温退火过程中形成足够的（Al，Si）N夹杂物， ，促进了最终产品的稳定，完美的二次再结晶微观结构的产生。 此外，本发明避免了使用氨氮在现有技术中对下层的影响，因此有利于形成良好的玻璃膜下层。

公开(公告)号：US20120000262A1

公开(公告)日：2012-01-05

申请号：US13142955

申请日：2009-12-31

申请人： Guobao Li ,  Pijun Zhang ,  Yongjie Yang ,  Kanyi Shen ,  Zhuochao Hu ,  Peiwen Wu ,  Weizhong Jin ,  Quanli Jiang

发明人： Guobao Li ,  Pijun Zhang ,  Yongjie Yang ,  Kanyi Shen ,  Zhuochao Hu ,  Peiwen Wu ,  Weizhong Jin ,  Quanli Jiang

IPC分类号： B21B27/06

CPC分类号： C21D8/12 ,  B21B1/36 ,  B21B3/00 ,  B21B9/00 ,  C21D1/28 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  H01F1/14775

摘要： The invention provides a method for producing grain-oriented silicon steel with single cold rolling, comprising: 1) smelting, refining and continuous casting to obtain a casting blank; 2) hot rolling; 3) normalization, i.e. normalizing annealing and cooling; 4) cold-rolling, i.e. single cold rolling at a cold rolling reduction rate of 75-92%; 5) decarburizing annealing at 780-880° C. for 80-350 s in a protective atmosphere having a due point of 40-80° C., wherein the total oxygen [0] in the surface of the decarburized sheet: 171/t≦[O]≦313/t (t represents the actual thickness of the steel sheet in mm), the amount of absorbed nitrogen: 2-10 ppm; 6) high temperature annealing, wherein the dew point of the protective atmosphere: 0-50° C., the temperature holding time at the first stage: 6-30 h, the amount of absorbed nitrogen during high-temperature annealing: 10-40 ppm; 7) hot-leveling annealing. The invention may control the primary recrystallization microstructure of steel sheet effectively by controlling the normalization process of hot rolled sheet to form sufficient favorable (Al, Si)N inclusions from nitrogen absorbed by slab during decarburizing annealing and low-temperature holding of high-temperature annealing, facilitating the generation of stable, perfect secondary recrystallization microstructure of the final products. In addition, the invention avoids the impact of nitridation using ammonia on the underlying layer in prior art, and thus the formation of a good glass film underlying layer is favored.

摘要翻译： 本发明提供一种单次冷轧生产晶粒取向硅钢的方法，包括：1）熔炼，精炼和连续铸造得到铸坯; 2）热轧; 3）归一化，即归一化退火和冷却; 4）冷轧，即以75-92％的冷轧压下率进行单次冷轧; 5）在正常点为40-80℃的保护气氛中，在780-880℃下进行80-350秒的脱碳退火，其中脱碳薄片表面的总氧[0]为171 / t＆ ; [O]＆nlE; 313 / t（t表示钢板的实际厚度，单位为mm），吸附氮量：2-10ppm; 6）高温退火，其中保护气氛的露点为0-50℃，第一阶段的保温时间为6-30h，高温退火时吸收的氮量为10-40 ppm; 7）热水平退火。 本发明可以通过控制热轧板的归一化过程来控制钢板的一次再结晶微观结构，从而在脱碳退火和低温保持低温退火过程中形成足够的（Al，Si）N夹杂物， ，促进了最终产品的稳定，完美的二次再结晶微观结构的产生。 此外，本发明避免了使用氨氮在现有技术中对下层的影响，因此有利于形成良好的玻璃膜下层。

公开(公告)号：US09460054B2

公开(公告)日：2016-10-04

申请号：US13643371

申请日：2011-04-12

申请人： Meihong Wu ,  Weizhong Jin ,  Huande Sun ,  Guohua Yang ,  Kanyi Shen ,  Jie Huang ,  Guobao Li

发明人： Meihong Wu ,  Weizhong Jin ,  Huande Sun ,  Guohua Yang ,  Kanyi Shen ,  Jie Huang ,  Guobao Li

IPC分类号： G06F17/13 ,  G01N27/72 ,  G01R33/00

CPC分类号： G06F17/13 ,  G01N27/72 ,  G01R33/0064

摘要： A method for detecting electromagnetic property of oriented silicon steel, the method comprises: measuring Euler angles of each of crystal grains in a specimen by use of metallographic etch-pit method; calculating orientation deviation angle θi (degree) of the crystal grain; combining area Si (mm2) of the crystal grain and correction coefficient X of element Si (X=0.1˜10 T/degree); correcting on the basis of the magnetic property B0 (saturation magnetic induction, T) of single-crystal material by using these parameters (θi, Si, X), formula for correcting is B 8 = - 0.015 × X × ∑ n = 1 i ⁢ S i ⁢  θ i  ∑ n = 1 i ⁢ S i + ( B 0 - 0.04 ) ( 1 ) obtaining electromagnetic property B8 of the oriented silicon steel by the above calculations. The present invention can implement detection of electromagnetic property of a specimen under the circumstances that there is no magnetizm measuring device or that magnetizm measuring devices cannot be used due to reasons such as weight and size of the specimen being too small or surface quality of the specimen being poor.

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。