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1. 发明专利

JP2014210966A 圧粉磁芯用鉄粉有权
标题翻译：铁粉铁粉
公开(公告)号：JP2014210966A
公开(公告)日：2014-11-13
申请号：JP2013088720
申请日：2013-04-19
申请人： Jfeスチール株式会社 , Jfe Steel Corp
发明人： TAKASHITA TAKUYA , NAKAMURA NAOMICHI
IPC分类号： B22F1/00 , C22C38/00 , H01F1/24
CPC分类号： H01F3/08 , B22F1/00 , B22F1/0011 , C22C38/00 , C22C38/001 , C22C38/004 , C22C2202/02 , H01F1/147 , H01F1/20 , H01F1/24
摘要：【課題】鉄粉を成形し歪取焼鈍した後であっても、ヒステリシス損が低い圧粉磁芯を製造するための圧粉磁芯用鉄粉を提供する。【解決手段】圧粉磁芯用鉄粉を、見掛密度:3.8g/cm3以上で、平均粒子径(D50):80μm以上とし、さらに、粒子径100μm以上の粉末のうち、60%以上の粉末内部の結晶粒径を80μm以上とし、粉末の母相の面積に占める介在物の面積分率を0.4%以下として、粉末断面のマイクロビッカース硬度(試験力:0.245N)を90Hv以下とする。【選択図】なし
摘要翻译：要解决的问题：即使在形成铁粉后，即使在形成铁粉和退火以后，也可以提供用于制造磁滞损失低的粉尘芯的铁粉的铁粉，并且对应变去除进行退火。解决方案：粉芯的铁粉的表观密度为3.8 g / cm 3以上，平均粒径（D50）为80μm以上，晶粒尺寸为80μm以上的晶粒尺寸为60％以上，晶粒尺寸为100μm以上的粉末部分的晶粒尺寸为60μm以上，夹杂物的面积分数占据在粉末的主体相中为0.4％以下，微维氏硬度为90Hv以下的粉末截面，试验力为0.245N。

2. 发明专利

JP2014118630A Iron powder for dust core 有权
标题翻译：铁粉铁粉
公开(公告)号：JP2014118630A
公开(公告)日：2014-06-30
申请号：JP2012277424
申请日：2012-12-19
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKASHITA TAKUYA , NAKAMURA NAOMICHI
IPC分类号： B22F1/00 , C22C38/00 , H01F1/20
CPC分类号： B22F1/0062 , B22F1/0014 , B22F9/082 , B22F9/20 , B22F2009/0828 , B22F2301/35 , B22F2304/10 , B22F2998/10 , C21D1/26 , C21D3/02 , C21D3/04 , C22C33/02 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C2202/02 , H01F1/20 , H01F3/08
摘要： PROBLEM TO BE SOLVED: To provide iron powder for dust core having excellent compressibility and also having low core loss after molding.SOLUTION: In the iron powder for a dust core, the content of Si is 0.01 mass% or lower, apparent density is 3.8 g/cmor higher, the ratio of iron powder grain size that is 45 μm or smaller is 10 mass% or lower, the ratio of iron powder grain size that is larger than 180 and 250 μm or smaller is below 30 mass%, the ratio of iron powder grain size that is larger than 250 μm is 10 mass% or lower, and the Vickers hardness (test force: 0.245 N) of the cross section of the powder is 80 Hv or lower.
摘要翻译：要解决的问题：提供具有优异的压缩性和成型后的低铁损的粉芯的铁粉。解决方案：在粉芯的铁粉中，Si的含量为0.01质量％以下，表观密度为3.8 g / cm 3以下，铁粉粒径在45μm以下的比例为10质量％以下，铁粉粒径比180以上且250μm以下的铁粉比例低于30质量％，则比例大于250μm的铁粉粒径为10质量％以下，粉末截面的维氏硬度（试验强度：0.245N）为80Hv以下。

3. 发明专利

JP2017092255A 軟磁性粉末用の原料粉末並びに圧粉磁芯用軟磁性粉末およびその製造方法有权
公开(公告)号：JP2017092255A
公开(公告)日：2017-05-25
申请号：JP2015220645
申请日：2015-11-10
申请人： Jfeスチール株式会社 , Jfe Steel Corp
发明人： TAKASHITA TAKUYA , KOBAYASHI SATOO , NAKAMURA NAOMICHI , TAKAHASHI TOSHIMITSU , TAKEUCHI YOSHITO , OKAMOTO DAISUKE , SAEGUSA SHINJIRO , ISHII KOHEI
IPC分类号： H01F1/20 , B22F1/00 , B22F1/02 , C22C38/00
摘要：【課題】従来技術の課題を解消して、渦電流損の低い圧粉磁芯が得られる圧粉磁芯用軟磁性粉末の原料粉末を提供する。【解決手段】γ安定化元素、Si:1.0〜6.5mass%、およびC:1.0〜2.0mass%を含み、残部Feおよび不可避的不純物からなる粉末とする。【選択図】なし

4. 发明专利

JP2013187481A Method for manufacturing powder-compact magnetic core, and powder-compact magnetic core 有权
标题翻译：制造粉末磁芯和粉末磁芯的方法
公开(公告)号：JP2013187481A
公开(公告)日：2013-09-19
申请号：JP2012053341
申请日：2012-03-09
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKASHITA TAKUYA , NAKAMURA NAOMICHI
IPC分类号： H01F41/02 , B22F1/00 , B22F1/02 , B22F3/00 , B22F3/02 , H01F1/26 , H01F27/255
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a powder-compact magnetic core with a high green density and a low iron loss.SOLUTION: The method comprises: mixing pure iron powder having an average particle diameter of 63-150 μm with a silicone resin, followed by heating at a temperature of 100-200°C provided that when the pure iron powder has an apparent density larger than 4.0 g/cmbelow 4.2 g/cm, the amount of the mixed silicone resin is 0.1-0.2 mass%, and when the pure iron powder has an apparent density of 4.2 g/cmor larger, the amount of the mixed silicone resin is 0.05-0.2 mass%; and compacting the mixture, followed by heating at a temperature of 650°C or higher.
摘要翻译：要解决的问题：提供一种具有高生密度和低铁损的粉末 - 致密磁芯的制造方法。溶液：该方法包括：将平均粒径为63-150微米的纯铁粉与硅树脂，然后在100-200℃的温度下加热，条件是当纯铁粉末的表观密度大于4.0g / cmbe以下4.2g / cm 2时，混合有机硅树脂的量为0.1-0.2质量％当纯铁粉的表观密度为4.2g / cm 3以上时，混合有机硅树脂的含量为0.05〜0.2质量％。并将混合物压实，然后在650℃或更高的温度下加热。

5. 发明专利

JP2013187480A Powder for dust magnetic core 有权
标题翻译：粉尘磁粉
公开(公告)号：JP2013187480A
公开(公告)日：2013-09-19
申请号：JP2012053335
申请日：2012-03-09
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKASHITA TAKUYA , NAKAMURA NAOMICHI
IPC分类号： H01F1/24 , B22F1/00 , B22F1/02 , H01F1/26
摘要： PROBLEM TO BE SOLVED: To provide a powder for dust magnetic core having excellent compressibility and exhibiting low iron loss after molding.SOLUTION: In the powder, mass ratio of 150-75 μm is highest, mass ratio of 300-150 μm is next, mass ratio of less than 75 μm is lowest, and apparent density of the powder is 3.5 g/cmor more. Furthermore, average crystal grain diameter in the powder is 50 μm or more, for an arbitrary powder of 40 pieces or more.
摘要翻译：要解决的问题：为了提供压缩性优异，成型后铁损低的粉尘磁心粉末。解决方案：在粉末中，质量比为150-75μm最高，质量比为300-150μm，小于75μm的质量比最低，粉末的表观密度为3.5g / cm 3以上。此外，粉末中的平均晶粒直径为40μm以上的任意粉末的50μm以上。

6. 发明专利

JP2012162773A Method for manufacturing grain-oriented electrical steel sheet 有权
标题翻译：制造面向导电电工钢板的方法
公开(公告)号：JP2012162773A
公开(公告)日：2012-08-30
申请号：JP2011024633
申请日：2011-02-08
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKAMIYA TOSHITO , TAKENAKA MASANORI , TAKASHITA TAKUYA , TAKASHIMA MINORU
IPC分类号： C21D8/12 , C22C38/00 , C22C38/60
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a grain-oriented electrical steel sheet by which the existing shape of C before cold rolling is optimized and an excellent magnetic characteristic can stably be obtained after applying secondary recrystallization annealing.SOLUTION: The method for manufacturing the grain-oriented electrical steel sheet is performed as follows: after reheating a steel material containing, by mass%, 0.005 to 0.15% C, 2.5 to 7.0% Si, 0.005 to 0.3% Mn, 0.01 to 0.05% sol.Al, 0.002 to 0.012% N and 0.005 to 0.05% by the total of one or two kinds among S and Se, hot rolling is applied, a winding temperature is brought into a range of 760 to 460°C to generate an oxide mainly comprising FeOon the surface of a steel sheet, and then after heated to ≥800°C under an oxidizing atmosphere, cooling is performed at 10 to 100°C/s average cooling speed up to a cooling stop temperature from 800°C to 350-200°C, and then hot rolling steel sheet annealing is applied so that cooling is gradually performed at ≤5°C/s cooling speed from the cooling stop temperature for 40 to 200 s.
摘要翻译：解决问题的方案：提供一种制造方向性电磁钢板的方法，其中在冷轧后C的现有形状被优化，并且在进行二次再结晶退火之后可以稳定地获得优异的磁特性。解决方案：晶粒取向电工钢板的制造方法如下进行：将以质量％计含有0.005〜0.15％的C，2.5〜7.0％的Si，0.005〜0.3％的Mn，在S和Se中，0.01〜0.05％的溶胶，0.002〜0.012％的N和0.005〜0.05％的总和为1〜2种，进行热轧，卷绕温度为760〜460℃ 在钢板表面产生主要包含Fe 3 O 4 的氧化物，然后加热至≥800° 在10〜100℃/ s的平均冷却速度下进行冷却至800〜350〜200℃的冷却停止温度，然后进行热轧钢板退火，冷却为在冷却停止温度下以≤5℃/ s的速度逐渐进行40秒至200秒。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2012102344A Grain-oriented electromagnetic steel sheet 有权
标题翻译：面向导电电磁钢板
公开(公告)号：JP2012102344A
公开(公告)日：2012-05-31
申请号：JP2010249052
申请日：2010-11-05
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： IMAMURA TAKESHI , MURAKI MINEO , ARAGAKI YUKIHIRO , TAKASHITA TAKUYA
IPC分类号： C22C38/00 , C21D8/12 , C22C38/14 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet capable of being reduced in deterioration of magnetic properties after being sheared even when the electromagnetic steel sheet has a thickness of 0.220 mm or less, in the electromagnetic steel sheet used for a large transformer of a size as large as several meters.SOLUTION: The electromagnetic steel sheet has a composition containing, by mass, 0.005% or less C, 1.0-8.0% Si, and 0.005-1.0% Mn, further 10-50 mass ppm, in total, of one or more elements selected from among Nb, Ta, V and Zr, with the balance consisting of Fe and inevitable impurities, and is characterized in that at least 10% of each content of the Nb Ta, V and Zr is present in a precipitated state, the precipitated objects have diameters (circle-equivalent diameters) of 0.02-3 μm on the average, the number of intervening objects having diameters of 10 μm or more is less than 1 piece/mm, and the average grain diameter of the secondary recrystallization grains in the steel sheet is 5 mm or more.
摘要翻译：要解决的问题：为了提供即使在电磁钢板的厚度为0.220mm以下的剪切后也能够降低磁特性的劣化的钢板，在用于大型变压器的电磁钢板尺寸大到几米。＆lt; P＆gt;解决方案：电磁钢板具有以下组成：将含有0.005％以下的C，1.0〜8.0％的Si，0.005〜1.0％的Mn，进一步的10〜50质量ppm，选自Nb，Ta，V和Zr中的元素，余量由Fe和不可避免的杂质组成，其特征在于Nb Ta，V和Zr的每种含量的至少10％以沉淀状态存在，沉淀物的平均直径（圆当量直径）为0.02-3μm，直径为10μm以上的中间物体的数量少于1片/ mm 2 ，钢板中的二次再结晶晶粒的平均粒径为5mm以上。版权所有（C）2012，JPO＆INPIT

8. 发明专利

JP2014103267A Method of producing powder for dust core and powder for dust core 有权
标题翻译：生产用于粉剂的粉末和粉末的方法
公开(公告)号：JP2014103267A
公开(公告)日：2014-06-05
申请号：JP2012254490
申请日：2012-11-20
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKASHITA TAKUYA , NAKAMURA NAOMICHI
IPC分类号： H01F41/02 , B22F1/00 , B22F1/02 , C22C33/02 , C22C38/00 , H01F1/24
摘要： PROBLEM TO BE SOLVED: To provide a method of producing powder for dust core which can give the characteristics of high magnetic flux density and low iron loss to a dust core molded.SOLUTION: A method of producing powder for dust core includes a step for obtaining ferrous soft magnetic powder by atomization, a reduction heat treatment step for heat treating the ferrous soft magnetic powder in a hydrogen atmosphere of 950°C or more, a pulverization step for performing pulverization after the reduction heat treatment step, a crushing step for crushing the powder passed through the pulverization step by giving a shear force with a body of rotation, a strain relief step for performing strain relief at a temperature of 500°C or higher and less than 900°C after the crushing step, and a step for applying an insulation coating of 0.05 mass% or more and less than 0.3 mass% of the powder mass on the surface of the powder after the strain relief step. The crushing step is carried out under conditions that the product of the peripheral velocity (m/s) of the body of rotation and the crushing time (s) is 1000-22000 m.
摘要翻译：要解决的问题：提供一种粉尘芯的粉末的制造方法，其能够赋予成型的压粉芯具有高的磁通密度和低的铁损的特性。解决方案：一种制备粉尘芯的粉末的方法包括获得通过雾化的亚铁软磁性粉末，在950℃以上的氢气气氛中对亚铁软磁性粉末进行热处理的还原热处理工序，在还原热处理工序后进行粉碎的粉碎工序，粉碎工序通过赋予旋转体剪切力通过粉碎步骤的粉末，在破碎步骤后在500℃以上且小于900℃的温度下进行应变消除的应变消除步骤，以及施加步骤在应变消除工序之后的粉末表面的粉末质量为0.05质量％以上且小于0.3质量％的绝缘涂层。破碎步骤在旋转体的圆周速度（m / s）与破碎时间（s）为1000〜2200m的条件下进行。

9. 发明专利

JP2013139629A Method for producing low iron loss grain-oriented magnetic steel sheet 有权
标题翻译：生产低铁损失谷粒磁性钢板的方法
公开(公告)号：JP2013139629A
公开(公告)日：2013-07-18
申请号：JP2012266887
申请日：2012-12-06
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKENAKA MASANORI , TAKASHITA TAKUYA , HANAZAWA KAZUHIRO , TAKAMIYA TOSHITO
IPC分类号： C21D8/12 , B21B1/22 , B21B3/02 , C22C38/00 , C22C38/06 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a grain-oriented magnetic steel sheet which prevents deterioration in integrating degree in Goss orientation of a secondary recrystallized grain in an Al-containing grain-oriented magnetic steel sheet to produce a grain-oriented magnetic steel sheet excellent in magnetic property.SOLUTION: The method for producing a grain-oriented magnetic steel sheet containing 0.01-0.05 mass% sol. Al, includes: a hot-rolled sheet annealing where a steel slab is subjected to annealing at 800°C or higher, and then cooled at a cooling rate of 45°C/s or more while the steel slab has a temperature between 750°C and a cooling end temperature of 200-300°C; a first cold rolling where the steel slab is subjected to cold rolling more than 1 pass to achieve a total reduction of 30-50%, and then to a final pass using a roll with 200 mmφ or more with an initial biting temperature of 100°C or lower; and a second cold rolling after an intermediate annealing, where the steel slab is subjected to cold rolling more than 2 passes to achieve a total reduction of 80-95% while being subjected to an interpass aging at 200-300°C at least during 1 pass.
摘要翻译：要解决的问题：提供一种用于制造晶粒取向电磁钢板的方法，其防止含Al取向电磁钢板中的二次再结晶晶粒的Goss取向积分度的劣化，以产生晶粒取向磁性磁性优异的钢板。解决方案：含有0.01-0.05质量％溶胶的晶粒取向电磁钢板的制造方法。 Al包括：对钢坯进行800℃以上退火，然后以45℃/ s以上的冷却速度进行冷却的热轧板退火，而钢坯的温度为750℃以下 C，冷却终止温度为200-300℃; 第一次冷轧，其中钢坯经受超过1次的冷轧，总共减少30-50％，然后使用200mm＆amp; 或更高，初始咬合温度为100℃或更低; 在中间退火之后进行第二次冷轧，其中钢坯经受2次以上的冷轧，总共减少80-95％，同时在200-300℃下进行至少1次的中间退火通过。

10. 发明专利

JP2012184497A Method for producing grain-oriented electromagnetic steel sheet 有权
标题翻译：生产面向导电电磁钢板的方法
公开(公告)号：JP2012184497A
公开(公告)日：2012-09-27
申请号：JP2011174949
申请日：2011-08-10
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： ARAGAKI YUKIHIRO , OKUBO TOMOYUKI , TAKASHITA TAKUYA
IPC分类号： C21D8/12 , B21B3/02 , C22C38/00 , C22C38/04 , C22C38/60 , H01F1/16
摘要： PROBLEM TO BE SOLVED: To propose a novel method for producing a grain-oriented electromagnetic steel sheet by which texture modification effect same as that of warm rolling can be attained.SOLUTION: Steel slab containing 0.01-0.10 mass% C, 2.0-4.5 mass% Si and 0.01-0.5 mass% Mn is hot-rolled to produce a hot-rolled plate, and the hot-rolled plate is annealed. Then, the hot-rolled plate is rolled at rolling-reduction ratio of 85% or more by one-time cold rolling, or it is rolled at rolling-reduction ratio of 80% or more by finish cold rolling comprising two or more times cold rolling with intermediate annealing, to produce a cold-rolled plate having a final plate thickness. The cold-rolled plate is subjected to primary recrystallize-annealing and secondary recrystallize-annealing to obtain the grain-oriented electromagnetic steel sheet. In the method for producing the grain-oriented electromagnetic steel sheet, low strain rate cold rolling of 150sor less in strain rate is conducted at least one pass or more in a step of the cold rolling in which a total rolling reduction is 50% or less.
摘要翻译：解决问题的方案：提出一种可以获得与温轧相同的织构修饰效果的方向性电磁钢板的制造方法。
解决方案：将含有0.01-0.10质量％C，2.0-4.5质量％Si和0.01-0.5质量％Mn的钢板热轧制成热轧板，并对该热轧板进行退火。然后，通过一次冷轧，以85％以上的轧制减量率轧制热轧板，或者通过包含2次以上的冷轧的精冷轧以80％以上的轧制减速比进行轧制用中间退火进行轧制，制造具有最终板厚度的冷轧板。对冷轧板进行一次再结晶退火和二次再结晶退火，得到晶粒取向电磁钢板。在晶粒取向电磁钢板的制造方法中，应变速率的150s以下的低应变率冷轧进行至少一次以上的步骤的总压下率为50％以下的冷轧。版权所有（C）2012，JPO＆INPIT

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