公开(公告)号：US06733599B2

公开(公告)日：2004-05-11

申请号：US10312115

申请日：2002-12-20

申请人： Hiroyasu Fujii ,  Yoshiyuki Ushigami ,  Shuichi Nakamura ,  Kenichi Murakami ,  Norihiro Yamamoto ,  Kiyoshi Sawano ,  Shuichi Yamazaki

发明人： Hiroyasu Fujii ,  Yoshiyuki Ushigami ,  Shuichi Nakamura ,  Kenichi Murakami ,  Norihiro Yamamoto ,  Kiyoshi Sawano ,  Shuichi Yamazaki

IPC分类号： H01F114

CPC分类号： C21D8/1283 ,  C21D1/70 ,  C21D3/04 ,  C21D8/1255 ,  C21D8/1272

摘要： The present invention provides a method for producing a grain-oriented silicon steel sheet not having inorganic mineral films by using an annealing separator capable of preventing the inorganic mineral films composed of forsterite (Mg2SiO4), and so on, from forming during final annealing, comprising the steps of decarburization annealing followed by coating of annealing separator and final annealing, wherein alumina powder calcined at a calcination temperature of 900 to 1,400° C., or further having a BET specific surface area of 1 to 100 m2/g, an oil absorption of 1 to 70 ml/100 g, and/or having a gamma ratio of 0.001 to 2.0, is used as the annealing separator. Magnesia having a BET specific surface area of 0.5 to 5 m2/g may be added to said alumina powder.

摘要翻译： 本发明提供一种通过使用能够防止由最终退火形成的镁橄榄石（Mg 2 SiO 4）等的无机矿物膜的退火隔板而制造不具有无机矿物膜的晶粒取向硅钢板的方法，包括 脱碳退火的步骤，然后进行退火分离剂的涂布和最终退火，其中在煅烧温度为900〜1400℃或BET比表面积为1〜100m 2 / g的条件下煅烧的氧化铝粉末， 使用1〜70ml / 100g的吸油量和/或具有0.001〜2.0的γ比值的退火分离剂。 可以向所述氧化铝粉末添加BET比表面积为0.5-5m 2 / g的氧化镁。

公开(公告)号：US06322688B1

公开(公告)日：2001-11-27

申请号：US09319209

申请日：1999-06-01

申请人： Shuichi Yamazaki ,  Masao Kurosaki ,  Kenichi Murakami ,  Yoshiyuki Ushigami

发明人： Shuichi Yamazaki ,  Masao Kurosaki ,  Kenichi Murakami ,  Yoshiyuki Ushigami

IPC分类号： C25D900

CPC分类号： C21D8/1288 ,  C25D9/06 ,  H01F1/18

摘要： In order to improve the adhesion property of an electrical steel sheet with no film of inorganic mineral matter on its surface, especially with respect to a tension-imparting insulating film, anodic electrolysis in an aqueous solution of silicate is carried out before insulating film formation to form a silicic film excellent in adhesion property with respect to the insulating film in a thin and strongly attached condition on the steel sheet surface. By this, a tension-imparting insulating film can be formed on a grain-oriented electrical steel sheet with excellent adhesion property to reduce the iron loss of the oriented electrical steel sheet. Also in the case of an insulating film that is not of the tension-imparting type, enhancement of film heat resistance and improvement of insulating property by increasing a film thickness are possible.

摘要翻译： 为了提高其表面没有无机矿物质膜的电工钢板的粘合性，特别是对于赋予张力的绝缘膜，在硅酸盐水溶液中进行阳极电解，在绝缘膜形成之前进行 在钢板表面上形成薄而坚固的条件下的绝缘膜的粘附性优异的硅膜。 由此，可以在具有优异的粘附性的方向性电磁钢板上形成张力赋予绝缘膜，以降低取向电工钢板的铁损。 另外，在不具有张力赋予型的绝缘膜的情况下，也可以通过增加膜厚来提高膜的耐热性和提高绝缘性。

公开(公告)号：US5509976A

公开(公告)日：1996-04-23

申请号：US503112

申请日：1995-07-17

申请人： Shuichi Yamazaki ,  Yoshiyuki Ushigami ,  Hiroyasu Fujii ,  Kenichi Murakami

发明人： Shuichi Yamazaki ,  Yoshiyuki Ushigami ,  Hiroyasu Fujii ,  Kenichi Murakami

IPC分类号： C21D8/12 ,  H01F1/14

CPC分类号： C21D8/1283 ,  C21D8/1272

摘要： Disclosed is a method for producing a grain-oriented electrical steel sheet having mirror surface containing 0.8 to 4.8% of Si in the form of a strip which has been subjected to a conventional series of operations including hot rolling with or without annealing, cold rolling once or at least twice with intermediate annealing to obtain a final thickness, decarburization annealing with or without nitriding treatment, coating the steel sheet with an annealing separator mainly containing non-hydrating oxide and final annealing, the improvement comprising:satisfying the relationship A!>0.2.times. O!where A! is the total concentration of alkali metal impurity in the annealing separator (weight %), and O! is the amount of oxygen contained in the steel sheet just prior to the final annealing (g/m.sup.2).

摘要翻译： 公开了一种具有镜面的晶面取向电工钢板的制造方法，其具有含有带状的0.8〜4.8％的Si的方式，该钢带经过常规的一系列操作，包括或不进行退火的热轧，冷轧一次 或至少两次中间退火以获得最终厚度，或者不进行氮化处理的脱碳退火，用主要包含非水合氧化物和最终退火的退火分离器涂覆钢板，改进包括：满足关系[A]> 0.2×[O]其中[A]为退火分离剂中碱金属杂质的总浓度（重量％），[O]为最终退火前的钢板中所含的氧的量（g / m 2 ）。

公开(公告)号：US09273371B2

公开(公告)日：2016-03-01

申请号：US13635172

申请日：2011-03-15

申请人： Kenichi Murakami ,  Chie Hama ,  Kazumi Mizukami ,  Yoshiyuki Ushigami ,  Shuichi Nakamura

发明人： Kenichi Murakami ,  Chie Hama ,  Kazumi Mizukami ,  Yoshiyuki Ushigami ,  Shuichi Nakamura

IPC分类号： C23C8/02 ,  C23C8/26 ,  C21D8/12 ,  C21D3/04 ,  C21D6/00 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/60 ,  H01F1/18 ,  C23C8/80 ,  B21B3/00 ,  B21B3/02

CPC分类号： C21D8/1222 ,  B21B3/00 ,  B21B3/02 ,  C21D3/04 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/60 ,  C23C8/02 ,  C23C8/80 ,  H01F1/18

摘要： A predetermined steel containing Te: 0.0005 mass % to 0.0050 mass % is heated to 1320° C. or lower to be subjected to hot rolling, and is subjected to annealing, cold rolling, decarburization annealing, and nitridation annealing, and thereby a decarburized nitrided steel sheet is obtained. Further, an annealing separating agent is applied on the surface of the decarburized nitrided steel sheet and finish annealing is performed, and thereby a glass coating film is formed. The N content of the decarburized nitrided steel sheet is set to 0.0150 mass % to 0.0250 mass % and the relationship of 2×[Te]+[N]≦0.0300 mass % is set to be established. Note that [Te] represents the Te content and [N] represents the N content.

摘要翻译： 将含有Te：0.0005质量％至0.0050质量％的预定钢加热至1320℃以下进行热轧，进行退火，冷轧，脱碳退火和氮化退火，由此进行脱碳氮化 得到钢板。 此外，在脱碳氮化钢板的表面上涂布退火分离剂，进行最终退火，形成玻璃涂膜。 将脱碳氮化钢板的N含量设定为0.0150质量％〜0.0250质量％，设定2×[Te] + [N] / nlE; 0.0300质量％的关系。 注意，[Te]表示Te含量，[N]表示N含量。

公开(公告)号：US09175362B2

公开(公告)日：2015-11-03

申请号：US13579692

申请日：2011-02-18

申请人： Kenichi Murakami ,  Yoshiyuki Ushigami

发明人： Kenichi Murakami ,  Yoshiyuki Ushigami

IPC分类号： C21D8/12 ,  C21D3/04 ,  C21D9/46 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C23C8/02 ,  C23C8/80 ,  H01F1/16 ,  C22C38/02 ,  C22C33/04 ,  C22C38/14 ,  C22C38/16 ,  C23C8/00 ,  C21D8/00

CPC分类号： C21D8/12 ,  C21D3/04 ,  C21D9/46 ,  C22C33/04 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/16 ,  C22C38/34 ,  C23C8/02 ,  C23C8/80 ,  H01F1/16

摘要： Hot rolling is performed on a steel with a predetermined composition containing Ti: 0.0020 mass % to 0.010 mass % and/or Cu: 0.010 mass % to 0.50 mass % to obtain a hot-rolled steel sheet. Annealing is performed on the hot-rolled steel sheet to obtain an annealed steel sheet. Cold rolling is performed on the annealed steel sheet to obtain a cold-rolled steel sheet. Decarburization annealing and nitridation annealing are performed on the cold-rolled steel sheet to obtain a decarburized nitrided steel sheet. Then, finish annealing is performed on the decarburized nitrided steel sheet. When obtaining the decarburized nitrided steel sheet, heating on the cold-rolled steel sheet is started in a decarburizing and nitriding atmosphere, then first annealing is performed at a first temperature within a predetermined range, and then second annealing is performed at a second temperature within a predetermined range.

摘要翻译： 对含有Ti：0.0020质量％至0.010质量％和/或Cu：0.010质量％至0.50质量％的预定组成的钢进行热轧，得到热轧钢板。 在热轧钢板上进行退火，得到退火钢板。 在退火钢板上进行冷轧，得到冷轧钢板。 在冷轧钢板上进行脱碳退火和氮化退火，得到脱碳氮化钢板。 然后，对脱碳氮化钢板进行最终退火。 当获得脱碳氮化钢板时，在脱碳氮化气氛中开始对冷轧钢板进行加热，然后在规定范围内的第一温度进行第一次退火，然后在第二温度下进行第二次退火 预定范围。

公开(公告)号：US08778095B2

公开(公告)日：2014-07-15

申请号：US13699526

申请日：2011-05-19

申请人： Isao Iwanaga ,  Yoshiyuki Ushigami ,  Norikazu Fujii ,  Norihiro Yamamoto ,  Masahide Uragoh ,  Kenichi Murakami ,  Chie Hama

发明人： Isao Iwanaga ,  Yoshiyuki Ushigami ,  Norikazu Fujii ,  Norihiro Yamamoto ,  Masahide Uragoh ,  Kenichi Murakami ,  Chie Hama

IPC分类号： C23C8/26 ,  C23C8/02

CPC分类号： C23C8/00 ,  B21B3/02 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C8/02 ,  C23C8/26 ,  C23C8/80 ,  H01F1/14775 ,  H01F1/16

摘要： In a method of manufacturing a grain-oriented electrical steel sheet including a nitriding treatment (step S7) and adopting so-called “low-temperature slab heating”, the finish temperature of finish rolling in hot rolling (step S2) is set to 950° C. or below, the cooling is started within 2 seconds after completion of the finish rolling, and a steel strip is coiled at 700° C. or below. The cooling rate over the duration from the end of finish rolling to the start of coiling is set to 10° C./sec or above. In annealing (step S3) of the hot-rolled steel strip, the heating rate in the temperature range from 800° C. to 1000° C. is set to 5° C./sec or above.

摘要翻译： 在制造包括氮化处理（步骤S7）并采用所谓的“低温板坯加热”的方向性电磁钢板的方法中，将热轧中的精轧最终温度（步骤S2）设定为950 ℃以下，在精轧结束后2秒内开始冷却，钢带在700℃以下卷取。 从精轧结束到卷取开始的持续时间的冷却速度设定为10℃/秒以上。 在热轧钢带的退火（步骤S3）中，在800℃〜1000℃的温度范围内的加热速度设定为5℃/秒以上。

公开(公告)号：US07857915B2

公开(公告)日：2010-12-28

申请号：US11921369

申请日：2006-05-19

申请人： Tomoji Kumano ,  Kenichi Murakami ,  Yoshiyuki Ushigami

发明人： Tomoji Kumano ,  Kenichi Murakami ,  Yoshiyuki Ushigami

IPC分类号： H01F1/147 ,  H01F1/18

CPC分类号： H01F1/16 ,  C21D8/12 ,  C21D8/1205 ,  C21D8/1244 ,  C21D8/1261 ,  C21D8/1272 ,  C21D2201/05 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/16 ,  C22C38/60 ,  C23C8/02 ,  C23C8/80 ,  H01F1/14791

摘要： Reheating a grain-oriented electrical steel sheet slab comprising predetermined components to 1280° C. or more and a solid solution temperature of inhibitor substances or more, hot rolling, annealing, and cold rolling it, decarburization annealing it, nitriding it in a strip running state, coating an annealing separator, and finish annealing it during which making a precipitation ratio of N as AlN after hot rolling 20% or less, making a mean grain size of primary recrystallization 7 μm to less than 20 μm, and making a nitrogen increase ΔN in the nitridation within a range of Equation (1) and making nitrogen contents σN1 and σN2 (front and back, mass %) of a 20% thickness portion of one surface of the steel strip (sheet) within a range of Equation (2): 0.007−([N]−14/48×[Ti])≦ΔN≦[solAl]×14/27−([N]−14/48×[Ti])+0.0025  Equation (1) |σN1−σN2|/ΔN≦0.35  Equation (2).

摘要翻译： 将包含预定成分的晶粒取向电工钢板坯加热至1280℃以上，抑制物质的固溶温度以上，热轧，退火，冷轧后，进行脱碳退火，将其在条带运行中氮化 状态，涂布退火分离剂，并且在热轧后使NN作为AlN的析出比为20％以下进行最终退火，使一次再结晶的平均粒径为7μm〜小于20μm，并使氮增加 ＆Dgr; N在等式（1）的范围内的氮化中，并且使钢带（片材）的一个表面的20％厚度部分的氮含量和N1和＆lt; N 2（前和后质量％）在 方程式（2）的范围：0.007 - （[N] -14 / 48×[Ti]）＆nlE;＆Dgr; N＆nlE; [solAl]×14/27 - （[N] -14 / 48×[Ti] +0.0025等式（1）|＆sgr; N1-＆sgr; N2 | /＆Dgr; N＆nlE; 0.35等式（2）。

公开(公告)号：US20130000786A1

公开(公告)日：2013-01-03

申请号：US13635172

申请日：2011-03-15

申请人： Kenichi Murakami ,  Chie Hama ,  Kazumi Mizukami ,  Yoshiyuki Ushigami ,  Shuichi Nakamura

发明人： Kenichi Murakami ,  Chie Hama ,  Kazumi Mizukami ,  Yoshiyuki Ushigami ,  Shuichi Nakamura

IPC分类号： C23C8/02 ,  C23C8/26

CPC分类号： C21D8/1222 ,  B21B3/00 ,  B21B3/02 ,  C21D3/04 ,  C21D6/008 ,  C21D8/12 ,  C21D8/1255 ,  C21D8/1272 ,  C21D8/1283 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/60 ,  C23C8/02 ,  C23C8/80 ,  H01F1/18

摘要： A predetermined steel containing Te: 0.0005 mass % to 0.0050 mass % is heated to 1320° C. or lower to be subjected to hot rolling, and is subjected to annealing, cold rolling, decarburization annealing, and nitridation annealing, and thereby a decarburized nitrided steel sheet is obtained. Further, an annealing separating agent is applied on the surface of the decarburized nitrided steel sheet and finish annealing is performed, and thereby a glass coating film is formed. The N content of the decarburized nitrided steel sheet is set to 0.0150 mass % to 0.0250 mass % and the relationship of 2×[Te]+[N]≦0.0300 mass % is set to be established. Note that [Te] represents the Te content and [N] represents the N content.

摘要翻译： 将含有Te：0.0005质量％至0.0050质量％的预定钢加热至1320℃以下进行热轧，进行退火，冷轧，脱碳退火和氮化退火，由此进行脱碳氮化 得到钢板。 此外，在脱碳氮化钢板的表面上涂布退火分离剂，进行最终退火，形成玻璃涂膜。 将脱碳氮化钢板的N含量设定为0.0150质量％〜0.0250质量％，设定2×[Te] + [N] / nlE; 0.0300质量％的关系。 注意，[Te]表示Te含量，[N]表示N含量。

公开(公告)号：US20090044881A1

公开(公告)日：2009-02-19

申请号：US11921369

申请日：2006-05-19

申请人： Tomoji Kumano ,  Kenichi Murakami ,  Yoshiyuki Ushigami

发明人： Tomoji Kumano ,  Kenichi Murakami ,  Yoshiyuki Ushigami

IPC分类号： C21D8/00 ,  C22C38/02

CPC分类号： H01F1/16 ,  C21D8/12 ,  C21D8/1205 ,  C21D8/1244 ,  C21D8/1261 ,  C21D8/1272 ,  C21D2201/05 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/16 ,  C22C38/60 ,  C23C8/02 ,  C23C8/80 ,  H01F1/14791

摘要： Reheating a grain-oriented electrical steel sheet slab comprising predetermined components to 1280° C. or more and a solid solution temperature of inhibitor substances or more, hot rolling, annealing, and cold rolling it, decarburization annealing it, nitriding it in a strip running state, coating an annealing separator, and finish annealing it during which making a precipitation ratio of N as AlN after hot rolling 20% or less, making a mean grain size of primary recrystallization 7 μm to less than 20 μm, and making a nitrogen increase ΔN in the nitridation within a range of Equation (1) and making nitrogen contents σN1 and σN2 (front and back, mass %) of a 20% thickness portion of one surface of the steel strip (sheet) within a range of Equation (2): 0.007−([N]−14/48×[Ti])≦ΔN≦[solAl]×14/27−([N]−14/48×[Ti])+0.0025  Equation (1) |σN1−σN2|/ΔN≦0.35  Equation (2)

摘要翻译： 将包含预定成分的晶粒取向电工钢板坯加热至1280℃以上，抑制物质的固溶温度以上，热轧，退火，冷轧后，进行脱碳退火，将其在条带运行中氮化 状态，涂覆退火分离剂，并且在热轧后使NN作为AlN的析出比为20％以下进行最终退火，使一次再结晶的平均粒径为7μm〜小于20μm，并使氮增加 在等式（1）的范围内的氮化中的ΔN和在钢带（片材）的一个表面的20％厚度部分的氮含量σigmaN1和σN2（前后质量％）在等式（2）的范围内 ）：<？in-line-formula description =“In-line Formulas”end =“lead”？> 0.007 - （[N] -14 / 48x [Ti]）<= DeltaN <= [solAl] x14 / （[N] -14 / 48x [Ti]）+ 0.0025等式（1）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formul ae description =“In-line Formulas”end =“lead”？> | sigmaN1-sigmaN2 | / DeltaN <= 0.35等式（2）<？in-line-formula description =“In-line Formulas”end =“tail” ？>

公开(公告)号：US06613160B2

公开(公告)日：2003-09-02

申请号：US09924353

申请日：2001-08-07

申请人： Yoshiyuki Ushigami ,  Shuichi Nakamura ,  Kenichi Murakami ,  Hiroyasu Fujii ,  Norihiro Yamamoto

发明人： Yoshiyuki Ushigami ,  Shuichi Nakamura ,  Kenichi Murakami ,  Hiroyasu Fujii ,  Norihiro Yamamoto

IPC分类号： H01F1147

CPC分类号： C23C8/02 ,  C21D1/76 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1272 ,  C21D2201/05 ,  C22C38/008 ,  C22C38/02 ,  C22C38/18 ,  C23C8/26 ,  Y02P10/212

摘要： The present invention, in a method to produce a grain-oriented electrical steel sheet, proposes conditions for stable production by clarifying the causes by which secondary recrystallization is rendered unstable when primary recrystallization is controlled by raising the heating rate of decarburization annealing. The primary recrystallization structure is controlled by changing the heating rate and the oxide layer of a steel sheet is controlled by changing the conditions of soaking annealing in the decarburization annealing. The composition of the (Al, Si)N inhibitor is also controlled in the nitriding treatment thereafter.

摘要翻译： 本发明在制造方向性电磁钢板的方法中，提出了通过提高脱碳退火的加热速度来控制一次再结晶时二次再结晶化的原因的稳定化的条件。一次再结晶 通过改变加热速度控制结构，通过改变脱碳退火中的均热退火条件来控制钢板的氧化物层。 此后，氮化处理也控制（Al，Si）N抑制剂的组成。