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1. 发明专利

JP2014116527A Method for manufacturing dust core 有权
标题翻译：制造粉芯的方法
公开(公告)号：JP2014116527A
公开(公告)日：2014-06-26
申请号：JP2012270967
申请日：2012-12-12
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： KATO TETSURO , NOGUCHI SHIN , NISHIMURA KAZUNORI
IPC分类号： H01F41/02 , B22F1/02 , B22F3/00 , B22F3/02 , C22C38/00 , C22C45/02 , H01F1/26
摘要： PROBLEM TO BE SOLVED: To provide a configuration suitable for improving a space factor while suppressing an increase in core loss in a method for manufacturing a dust core configured using a soft magnetic material powder.SOLUTION: A method for manufacturing a dust core configured using a soft magnetic material powder comprises: a first step of mixing the soft magnetic material powder, a thermoplastic resin, and a silicone resin; a second step of heating the mixture which has passed the first step and pressing the heated mixture at a molding temperature not less than a glass transition temperature of the thermoplastic resin and a glass transition temperature of the silicone resin; and a third step of thermally processing a compact which has passed the second step at a temperature higher than the molding temperature.
摘要翻译：要解决的问题：提供一种适于提高空间系数的结构，同时抑制在使用软磁性材料粉末构成的压粉磁芯的制造方法中铁损的增加。解决方案：一种制造使用软磁性材料粉末包括：混合软磁性材料粉末，热塑性树脂和硅树脂的第一步骤; 加热已经经过第一步骤的混合物并在不低于热塑性树脂的玻璃化转变温度的模塑温度和硅树脂的玻璃化转变温度下加压混合物的第二步骤; 以及在比成形温度高的温度下热处理已经通过第二工序的坯料的第三工序。

2. 发明专利

JP2004260041A Ceramics composite material 有权
公开(公告)号：JP2004260041A
公开(公告)日：2004-09-16
申请号：JP2003050408
申请日：2003-02-27
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： NISHIMURA KAZUNORI , KOYUHARA TOKUKAZU , TANAKA MUNEYUKI
IPC分类号： B32B18/00 , C04B35/111 , C04B35/26 , H01F27/24 , H01F27/255 , H01F37/00
摘要： PROBLEM TO BE SOLVED: To provide a magnetic core that is comprised of an inductance element wherein its electrical characteristic is stable for a long time while the variation of an inductance value is suppressed, its assembling is easy and d.c. superimposing characteristics are superior, and provide a ceramics compound material comprising the same. SOLUTION: The ceramic composite material includes a ferrite layer, a ceramic layer made mainly of alumina, and a gradient composition layer having a gradient composition wherein Fe and Al are opposite to each other. COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2006278432A Electronic component 有权
标题翻译：电子元件
公开(公告)号：JP2006278432A
公开(公告)日：2006-10-12
申请号：JP2005091519
申请日：2005-03-28
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： NISHIMURA KAZUNORI , TANAKA MUNEYUKI
IPC分类号： H01F27/24 , H01F3/08
摘要： PROBLEM TO BE SOLVED: To provide a magnetic core which will not suffer from internal defects such as cracks, even if a non-magnetic layer is formed thick and is reduced in internal residual strain due to burning shrinkage percentage and shrinkage behavior, and also to provide an electronic component that uses the core.
SOLUTION: The electronic component includes a ferrite magnetic core with legs, a ferrite magnetic core to be abutted against the ferrite magnetic core with legs, and a winding arranged around the ferrite magnetic core with legs and/or the butt ferrite magnetic core. The butt ferrite magnetic core is made, by integrally forming a first ferrite magnetic material having a Curie temperature of 100°C or higher, and a second ferrite magnetic material having a Curie temperature of -40°C or lower, and then integrally sintering to joint a first ferrite portion formed of the first ferrite magnetic material, and a second ferrite portion formed of the second ferrite magnetic material together. At least in the abutted face between the butt ferrite magnetic core and the ferrite magnetic core with legs, a magnetic gap is formed of the second ferrite magnetic material.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供不会产生诸如裂纹的内部缺陷的磁芯，即使非磁性层形成较厚并且由于燃烧收缩率和收缩行为而导致内部残余应变减小，并且还提供使用该核心的电子部件。解决方案：电子部件包括具有腿部的铁氧体磁芯，与腿部抵接在铁氧体磁芯上的铁氧体磁芯，以及布置在具有腿和/或对接铁氧体磁芯的铁氧体磁芯周围的绕组。通过将居里温度为100℃以上的第一铁素体磁性材料和居里温度为-40℃以下的第二铁素体磁性体一体地形成，对接铁氧体磁心，接合由第一铁氧体磁性材料形成的第一铁氧体部分和由第二铁氧体磁性材料形成的第二铁氧体部分。至少在对接铁氧体磁芯与具有支腿的铁氧体磁芯之间的邻接面上，由第二铁氧体磁性材料形成磁隙。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2014175580A Dust core, coil component using the same and method of producing dust core 有权
标题翻译：粉芯，使用它的线圈组件和生产粉芯的方法
公开(公告)号：JP2014175580A
公开(公告)日：2014-09-22
申请号：JP2013048908
申请日：2013-03-12
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： KATO TETSURO , NOGUCHI SHIN , NISHIMURA KAZUNORI
IPC分类号： H01F1/22 , B22F1/00 , B22F3/00 , H01F1/153 , H01F1/20 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a configuration suitable for reducing core loss, in a dust core composed of soft magnetic material powder and a coil component using the same.SOLUTION: In a dust core composed of soft magnetic material powder 1, the soft magnetic material powder 1 is Fe-based amorphous alloy atomization powder, and Cu2 is dispersed between the soft magnetic material powder. A method of producing a dust core composed of soft magnetic material powder includes a first step for mixing the soft magnetic material powder, i.e., Fe-based amorphous alloy atomization powder, and Cu powder, and a second step for pressure molding a mixed powder obtained in the first step. A dust core in which Cu is dispersed between the Fe-based amorphous alloy atomization powder is obtained.
摘要翻译：要解决的问题：提供一种适合于减少铁芯损耗的构造，在由软磁性材料粉末构成的压粉磁心和使用其的线圈部件中。解决方案：在由软磁性材料粉末1构成的压电芯中，软磁性材料粉末1是Fe基非晶合金雾化粉末，Cu2分散在软磁性材料粉末之间。由软磁性材料粉末构成的压粉磁心的制造方法包括将软磁性体粉末即Fe系非晶态合金雾化粉末与Cu粉末混合的第一工序，以及将得到的混合粉末进行加压成型的第二工序在第一步。得到Cu分散在Fe系非晶合金雾化粉末之间的防尘芯。

5. 发明专利

JP2008192896A Dust core 有权
标题翻译： DUST CORE
公开(公告)号：JP2008192896A
公开(公告)日：2008-08-21
申请号：JP2007026752
申请日：2007-02-06
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： NISHIMURA KAZUNORI , NISHIO YOSHIMASA , OGURA KATSUHIRO
IPC分类号： H01F1/153 , B22F3/00 , C22C33/02 , C22C45/02 , C22C45/04 , H01F1/22 , H01F27/255
摘要： PROBLEM TO BE SOLVED: To provide a dust core which has a high mechanical strength, low noise and good magnetic characteristics over the prior art. SOLUTION: The dust core contains a mixture of amorphous alloy powder of at least one selected from Fe-Si-B, Fe-Si-B-Cu-Nb, Fe-Zr-B and Co-Fe-Si-B and pure Fe powder having Fe exceeding 99.5% by mass. The amorphous alloy powder is preferably in a weight ratio of 10 to 50% to the entirety. The dust core has a resistivity of 1×10 3 Ωm or more and a permeability higher than the pure Fe powder alone at a magnetic field of 10,000 A/m. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种与现有技术相比具有高机械强度，低噪声和良好磁特性的防尘芯。解决方案：粉尘芯包含选自Fe-Si-B，Fe-Si-B-Cu-Nb，Fe-Zr-B和Co-Fe-Si-B中的至少一种的非晶合金粉末的混合物 Fe超过99.5质量％的Fe粉末。非晶态合金粉末的重量比优选为10〜50％。在10,000A / m的磁场下，该防尘芯的电阻率为1×10 3Ω/Ω以上，透过率高于纯Fe粉末。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2004064057A Small-loss nickel-copper-zinc ferrite having high magnetic flux density and transformer for dc-dc converter 有权
公开(公告)号：JP2004064057A
公开(公告)日：2004-02-26
申请号：JP2003157079
申请日：2003-06-02
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： KOYUHARA TOKUKAZU , NISHIMURA KAZUNORI , UEDA HITOSHI
IPC分类号： C04B35/30 , C04B35/26 , H01F1/34 , H01F30/00
摘要： PROBLEM TO BE SOLVED: To provide ferrite which can be used for a transformer of a heat-shock-resistant DC/DC converter, having large saturation magnetic flux density, being small in loss at a core. SOLUTION: The ferrite composition comprises 46.0 to 50.5 mol% of Fe 203, 18.0 to 28.0 mol% of ZnO, more than 0 to 12.0 mol% of CuO (0 mol% is not included), and NiO for the rest as main components. An additive component of V 205 is also included by 0.1 to 0.6 wt.%. COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2015053491A 圧粉磁心有权
标题翻译：粉末磁芯
公开(公告)号：JP2015053491A
公开(公告)日：2015-03-19
申请号：JP2014202989
申请日：2014-10-01
申请人：日立金属株式会社 , Hitachi Metals Ltd
发明人： NISHIO YOSHIMASA , NOGUCHI SHIN , NISHIMURA KAZUNORI , KATO TETSURO , MIHARA TOSHIO
IPC分类号： H01F1/24 , B22F3/00 , H01F27/255
CPC分类号： H01F41/02 , B22F1/02 , B22F3/1039 , B22F3/16 , B22F2201/03 , B22F2201/05 , B22F2302/253 , B22F2304/10 , C22C33/02 , C22C38/00 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/18 , C22C38/34 , C22C2202/02 , H01F1/147 , H01F1/22 , H01F1/24 , H01F1/33 , H01F27/255 , H01F27/2823 , H01F41/0246
摘要：【課題】簡易な加圧成形による製造方法でも高い強度が得られる圧粉磁心を提供する。【解決手段】軟磁性材料粉を用いた圧粉磁心であって、その軟磁性材料粉同士が、質量比で内部の合金相よりもFe、CrおよびAlの和に対するAlの比率が高い酸化物層を介して結合され、軟磁性材料粉の占積率が80%以上であるとともに、電気抵抗率が1?103&OHgr;・m以上である。【選択図】図3
摘要翻译：要解决的问题：提供即使使用通过简单加压成型的制造方法也能够获得高强度的粉末磁芯。解决方案：粉末磁芯是使用软磁性材料粉末的粉末磁芯。软磁性材料粉末通过氧化物层以相对于内部合金相的质量比高于Fe，Cr和Al与Al的比例相互结合。软磁性材料粉末的空间因子不小于80％，电阻率不小于1×10 ^ OHgr * * m。

8. 发明专利

JP2008192897A Dust core and reactor 审中-公开
标题翻译：粉尘和反应器
公开(公告)号：JP2008192897A
公开(公告)日：2008-08-21
申请号：JP2007026753
申请日：2007-02-06
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： HAMAKAKE HIROTAKA , NISHIMURA KAZUNORI , NISHIO YOSHIMASA , OGURA KATSUHIRO , USHIJIMA MAKOTO
IPC分类号： H01F1/22 , B22F1/00 , C22C38/00 , H01F27/255
摘要： PROBLEM TO BE SOLVED: To provide a dust core and a reactor which can be suitable for a large current reactor dust core, good in inductance current characteristic, suppress increase in the reactor loss caused by gap fringing field and minimize deterioration of characteristics with low noise even when driven for a long time.
SOLUTION: The dust core is used, which comprises Fe-Si-based alloy powder containing 5-8% of Si by mass, pure Fe powder having Fe exceeding 99.5% by mass, and inorganic insulating binder uniformly present between these mixed powder particles. The pure Fe powder is in a weight ratio of 10 to 55% to the entirety.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供可以适用于大电流反应堆堆芯的集尘芯和电抗器，具有良好的电感电流特性，抑制了由间隙边缘引起的电抗器损耗的增加并使特性的劣化最小化噪音低，即使长时间驱动。
解决方案：使用防尘芯，其包含含有5-8质量％的Fe-Si基合金粉末，Fe超过99.5质量％的纯Fe粉末和在这些混合物之间均匀存在的无机绝缘粘合剂粉末颗粒。纯Fe粉末的重量比为10〜55％。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2008214161A Ni BASED SPINEL FERRITE SINTERED COMPACT AND METHOD FOR PRODUCING THE SAME 审中-公开
标题翻译：镍基螺旋铁素体烧结紧凑型及其制造方法
公开(公告)号：JP2008214161A
公开(公告)日：2008-09-18
申请号：JP2007056710
申请日：2007-03-07
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： NOGUCHI SHIN , NISHIMURA KAZUNORI
IPC分类号： C04B35/30 , C01G53/00 , C04B35/26 , H01F1/34
摘要： PROBLEM TO BE SOLVED: To provide an Ni based spinel ferrite sintered compact having a high saturation magnetic flux density and a low core loss, and to provide a method for producing the same. SOLUTION: The Ni based spinel ferrite sintered compact comprises Fe 2 O 3 , NiO, ZnO and CuO as principal elements, and has a maximum magnetic flux density of ≥420 mT at 23°C, and when the number of vacancies present in the crystal grains in the cross-section of the sintered compact is defined as N ig , the number of vacancies present on the crystal grain boundaries is defined as N gb , and the average crystal grain diameter is defined as D (μm), the Ni based spinel ferrite sintered compact has a ratio of the vacancies in the grains/the vacancies on the crystal grain boundaries η (μm -1 ) expressed by η=N ig /(N gb ×D) of ≤0.05. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供具有高饱和磁通密度和低铁损的Ni型尖晶石型铁氧体烧结体，并提供其制造方法。
解决方案：Ni基尖晶石铁氧体烧结体包含Fe 2 O 3 ，NiO，ZnO和CuO作为主要元素，其最大磁通密度≥ 在23℃下为420mT，并且当烧结体的截面中存在于晶粒中的空位数定义为N ig 时，存在于晶界的空位数被定义为N gb ，平均晶粒直径定义为D（μm），Ni基尖晶石型铁氧体烧结体具有晶粒中的空位/晶体上的空位比由η= N /（N gb ×D）表示的边界η（μm -1 ）≤0.05。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2008024974A Iron powder for powder magnetic core and manufacturing method therefor 审中-公开
标题翻译：用于粉末磁芯的铁粉及其制造方法
公开(公告)号：JP2008024974A
公开(公告)日：2008-02-07
申请号：JP2006197176
申请日：2006-07-19
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： MIYAMOTO TAKU , TANIGAWA SHIGEO , NISHIO YOSHIMASA , NISHIMURA KAZUNORI , UEDA HITOSHI
IPC分类号： B22F1/00 , C21D6/00 , C22C38/00 , H01F1/22 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a powder magnetic core with low core loss suitable for a motor core and an electric reactor core, which have reduced hysteresis loss and are used at a comparatively low frequency, and to provide a manufacturing method therefor. SOLUTION: The method for manufacturing an iron powder for the powder magnetic core comprises the steps of: preparing an FeSi-based iron powder containing 100 ppm or less C; applying a mechanical stress to the powder to distort it; and heat-treating the iron powder by keeping it at 500 to 1,200°C. The iron powder preferably includes at least one element of Al, Ti, V, Cr, Mn, Nb and Sb in an amount of 1,000 ppm or less. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种低磁芯损耗的粉末磁芯，其适用于具有减小的磁滞损耗并且以较低频率使用的电机芯和电抗器芯，并提供其制造方法。解决方案：用于制造粉末磁芯的铁粉的方法包括以下步骤：制备含有100ppm或更低C的FeSi基铁粉; 对粉末施加机械应力使其变形; 并将铁粉保持在500〜1200℃下进行热处理。铁粉末优选包含1,000ppm以下的Al，Ti，V，Cr，Mn，Nb，Sb中的至少一种元素。版权所有（C）2008，JPO＆INPIT

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