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1. 发明专利

JP2005226152A Method of producing powder magnetic core, and powder magnetic core 有权
标题翻译：生产粉末磁芯的方法和粉末磁芯
公开(公告)号：JP2005226152A
公开(公告)日：2005-08-25
申请号：JP2004038851
申请日：2004-02-16
申请人： Toyota Central Res & Dev Lab Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社豊田中央研究所
发明人： OKAJIMA HIROSHI , SUGIYAMA MASAKI , YAMAGUCHI TOSHIYA , KIKKO TADAYOSHI , KONDO MIKIO
IPC分类号： B22F3/00 , B22F1/02 , B22F3/02 , B22F3/24 , H01F27/255 , H01F41/02 , H02K1/02
摘要： PROBLEM TO BE SOLVED: To reduce burrs and to modify the outer shape in a powder magnetic core obtained by subjecting iron based magnetic powder coated with an insulating film to compacting. SOLUTION: The fact that a green compact 110 obtained by coating each inside face of dies 100, 102, 104 for compacting with a higher fatty acid based lubricant 106 and covering the same with an insulating film, and performing compacting (stages (a) to (d)) to the iron based magnetic powder 108 under high pressure can be subjected to plastic working has been found. Then, using upper and lower dies 120, 122 for shape modification whose inside shapes are bulged in accordance with the parts at which burrs 112 are produced in the green compact 110, plastic working (stages (f), (g)) is performed by compacting for shape modification. In the powder magnetic core 130 subjected to the shape modification, the burrs are removed, and the one having roundness can be obtained. It is also possible that preliminary annealing is performed before the shape modification stage. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过对涂覆有绝缘膜的铁基磁性粉末进行压实而获得的粉末磁芯中的毛刺和外部形状的改变来减少。解决方案：通过涂覆模具100,102,104的每个内表面以与高级脂肪酸基润滑剂106进行压实并用绝缘膜覆盖而进行压实（阶段（ a）至（d））到铁基磁粉108在高压下可以进行塑性加工已被发现。然后，使用上下模具120,122进行形状修改，其内部形状根据在压坯110中产生毛刺112的部分而膨胀，塑性加工（阶段（f），（g））通过压实形状修改。在进行形状变形的粉末磁芯130中，除去毛刺，得到具有圆度的毛刺。也可以在形状修饰阶段之前进行预退火。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2003082401A Sintered soft magnetic body, and production method therefor 有权
标题翻译：烧结软磁体及其生产方法
公开(公告)号：JP2003082401A
公开(公告)日：2003-03-19
申请号：JP2002172394
申请日：2002-06-13
申请人： Toyota Central Res & Dev Lab Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社豊田中央研究所
发明人： KONDO MIKIO , TAJIMA SHIN , HATTORI TAKESHI , OKAJIMA HIROSHI
IPC分类号： B22F3/00 , B22F1/00 , C22C38/00 , C22C38/14 , H01F1/22 , H01F41/02
CPC分类号： H01F41/0246
摘要： PROBLEM TO BE SOLVED: To provide a sintered soft magnetic body which has excellent magnetic properties at a relatively low cost. SOLUTION: A die for compacting whose inside face is coated with a higher fatty acid based lubricant is filled with magnetic powder essentially consisting of Fe, and hot compacting is performed under compacting pressure of >=784 MPa, and the obtained compact is sintered. Thus, the sintered soft magnetic body in which sintered compact density satisfies d>=7.4 g/cm , and saturation magnetization in the magnetic field of 1.6 MA/m satisfies Ms>=1.9 T, and magnetic flux density in the magnetic field of 1 kA/m satisfies B1k>=1.4 T can be obtained. In particular, when sintering temperature is controlled to a γ transformation point or higher, a metallic structure in which crystal grains are preferentially grown in a pressurizing direction on a compacting stage can be obtained.
摘要翻译：要解决的问题：提供以相对低的成本具有优异的磁特性的烧结软磁体。解决方案：一种用高压脂肪酸润滑剂涂覆内表面的压实用模具，填充有基本上由Fe组成的磁性粉末，在压实压力> 784MPa下进行热压实，烧结。因此，烧结体密度满足d> = 7.4g / cm 3，磁场饱和磁化强度为1.6MA / m的烧结软磁体满足Ms> = 1.9T，磁性体的磁通密度 1kA / m的场满足B1k> = 1.4T。特别是当将烧结温度控制在γ相变点以上时，可以得到在压实阶段优先沿加压方向生长晶体的金属结构体。

3. 发明专利

JPH11104893A METHOD AND APPARATUS FOR CHARGING WITH POWDER 失效
公开(公告)号：JPH11104893A
公开(公告)日：1999-04-20
申请号：JP27070797
申请日：1997-10-03
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： URATA ISAMU , TAKEMOTO YOSHIHIDE , OKAJIMA HIROSHI , KONDO MIKIO
IPC分类号： B30B11/00 , B22F3/02 , B22F3/035 , B30B15/30
摘要： PROBLEM TO BE SOLVED: To provide the method and the device for charging with the powder, by which the fluidity of the powder can be maintained to a prescribed value. SOLUTION: The powder 6 is supplied in a powder box 2 in which at least one tube 3 having plural holes 3a for discharging gas, is provided. The gas is made to flow into the powder box 2 from the holes 3a for discharging the gas of the tube 3, and the fluidity of the powder 6 in the powder box 2 is measured. Next, according to measured fluidity, the amount of the gas to be supplied to the tube 3 is controlled. And, by making the powder box 2 advance onto a cavity, the cavity is charged with the powder. The charging apparatus for the powder is equipped with a measuring device 4 measuring the fluidity of the powder 6 in the powder box 2 and a controller 5 for the amount of the gas, which controls the amount of the gas to be supplied to the tube 3 according to the measured fluidity.

4. 发明专利

JP2000172342A GRANULAR PARTICLE FILLING METHOD AND DEVICE 失效
公开(公告)号：JP2000172342A
公开(公告)日：2000-06-23
申请号：JP34440298
申请日：1998-12-03
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： KONDO MIKIO , TAKEMOTO YOSHIHIDE , OKAJIMA HIROSHI
IPC分类号： G05D7/00
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for improving the fluidity of a granular particle and precisely filling a packaged member with the prescribed amount of granular particles at high speed at the same time as the opening of an opening/closing member. SOLUTION: Gas introduction ports 20, 20... introducing gas into a granular particle storage container 14 where granular particles P are stored when a packaged member is filled with the granular particles P stored in the storage container 14 are installed and an opening/closing member 26 opening/closing a flow-out port 16 is installed. The opening time or the opening area of the flow-out port 16 in the opening part of the storage container by the opening/ closing member 26 is controlled. Thus, the filling amount is made to be constant and filling at high speed is realized.

5. 发明专利

JPH09267195A POWDER FILLING METHOD AND POWDER FILLING STATE OBSERVING METHOD 失效
公开(公告)号：JPH09267195A
公开(公告)日：1997-10-14
申请号：JP7594596
申请日：1996-03-29
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： TAKEMOTO YOSHIHIDE , OKAJIMA HIROSHI , KONDO MIKIO
IPC分类号： B65G65/32 , B22F3/00 , B22F3/02 , B22F3/035 , B30B11/00 , B30B15/30 , G01F11/18
摘要： PROBLEM TO BE SOLVED: To uniformly fill a powder for the powder metallurgy in a cavity and to suppress the dispersion of a bulk density. SOLUTION: The powder filling method is composed of a process to supply a powder 1 in a powder box and to float the powder 1 by passing a flowing gas 2 from a gas releasing hole 14a formed on the front face of a tube 14 installed inside the powder box 11, and a process to make the powder box 11 advance onto a cavity 20 and to make the powder 1 fill inside powder box 11 in the inside of cavity 20. In this powder filling method, the displacement of the powder 1 with the air inside the cavity box 20 is executed smoothly due to floating the powder 1 with the gas 2, flying up of the powder 1 in the filling time can be controlled and the dispersion of the bulk density can be suppressed.

6. 发明专利

JP2003080337A Press forming method and press forming member 有权
标题翻译：压制成型方法和压制成型
公开(公告)号：JP2003080337A
公开(公告)日：2003-03-18
申请号：JP2002172387
申请日：2002-06-13
申请人： Finesinter Co Ltd , Toyota Central Res & Dev Lab Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社ファインシンター , 株式会社豊田中央研究所
发明人： KONDO MIKIO , SEKIGUCHI AKIRA , MIYAGAWA NAOKI , TAKEMOTO YOSHIHIDE , OKAJIMA HIROSHI
IPC分类号： B21C23/32 , B21C9/00 , B21J3/00 , B21J5/00 , B21J13/02
摘要： PROBLEM TO BE SOLVED: To provide a press forming method which allows reduction of environmental load and, efficiently produces press-formed body.
SOLUTION: This press forming method comprises an attaching process of attaching a higher fatty acid type lubricant to the surface of metal blank and/or the formed surface of forming hardware, a heating process of heating the metal blank and/or the forming hardware and a forming process of press- forming the metal blank with the forming hardware in a warm condition.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种能够降低环境负荷并有效地生产压制成形体的冲压成形方法。解决方案：该压制成型方法包括将高级脂肪酸型润滑剂附着在金属坯料的表面和/或成形硬件的成形表面上的附着工艺，加热金属坯料和/或成形硬件的加热工艺和在成型硬件处于温暖状态下压制成型金属坯料的成型工艺。

7. 发明专利

JP2002329626A DUST CORE AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002329626A
公开(公告)日：2002-11-15
申请号：JP2001132238
申请日：2001-04-27
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： KONDO MIKIO , TAJIMA SHIN , HATTORI TAKESHI , OKAJIMA HIROSHI
IPC分类号： B22F1/00 , B22F3/02 , H01F1/24 , H01F27/255 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive dust core that is excellent in electric characteristics and magnetic characteristics. SOLUTION: This dust core is manufactured by press-molding iron-based magnetic powder having an oxide coating film on its surface. The saturation magnetization Ms and specific resistance ρ of the dust core in a magnetic field of 1.6 MA/m are respectively adjusted to Ms>=1.9 T and ρ>=0.7 μΩm and the magnetic flux density B2k of the core in a magnetic field of 2 kA/m is adjusted to B2k>=0.9 T. In addition, the magnetic flux density B10k and four-point bending strength σ of the core in a magnetic field of 10 kA/m are respectively adjusted to B10k>=1.6 T and σ>=50 MPa. Since the oxide coating film is formed on the surface of the magnetic powder, the electric characteristics and magnetic characteristics of the dust core are improved and the manufacturing cost of the core is reduced.

8. 发明专利

JPH11104894A METHOD FOR CHARGING WITH POWDER 失效
公开(公告)号：JPH11104894A
公开(公告)日：1999-04-20
申请号：JP27072897
申请日：1997-10-03
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： URATA ISAMU , TAKEMOTO YOSHIHIDE , OKAJIMA HIROSHI , KONDO MIKIO
IPC分类号： B30B11/00 , B22F3/02 , B22F3/035
摘要： PROBLEM TO BE SOLVED: To provide the method for charging with the powder, by which charging a cavity uniformly with the powder is further secured. SOLUTION: By inserting a tube 3 into the powder 6 after charging the cavity 5, making gas flow out through the gas flowing-out ports 4 of the tube and giving again fluidity to the powder 6 in the cavity, the charging is made uniform. Next, by making the diameters of the gas flowing-out ports 4 formed on the tube 3 larger on the outlet side than those on the inlet side to make the flow rate of the gas at an outlet lower and controlling dispersion and flying up of the powder 6 in a powder box 2, the uniform charging is promoted.

9. 发明专利

JP2006278470A Nano composite magnet 审中-公开
标题翻译：纳米复合磁铁
公开(公告)号：JP2006278470A
公开(公告)日：2006-10-12
申请号：JP2005092015
申请日：2005-03-28
申请人： Tohoku Univ , Toyota Motor Corp , トヨタ自動車株式会社 , 国立大学法人東北大学
发明人： OKAJIMA HIROSHI , SHOJI TETSUYA , SUGIMOTO SATOSHI
IPC分类号： H01F1/053 , B22F1/00 , B22F9/24 , C22C1/04 , C22C33/02 , H01F1/11 , H01F1/147 , H01F1/34
摘要： PROBLEM TO BE SOLVED: To provide a nano composite magnet having a high maximum energy product obtained by refining the particle size and the interface of the particles of both phases of a hard phase and a soft phase, a mixed proportion, etc. being controlled optimally, and forming both the particles into a nano composite. SOLUTION: Nano composite magnet is refined by refining a hard magnetic particle (hard phase) by a coprecipitation method contained in a liquid phase process, refining a soft magnetic particle (soft phase) by a reduction method contained in a liquid phase process, and forming both particles into the nano composite. COPYRIGHT: (C)2007,JPO&INPIT

10. 发明专利

JP2005068452A Iron based sintered alloy, and its production method 有权
标题翻译：基于铁的烧结合金及其生产方法
公开(公告)号：JP2005068452A
公开(公告)日：2005-03-17
申请号：JP2003209217
申请日：2003-08-28
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Toyota Motor Corp , トヨタ自動車株式会社
发明人： OKAJIMA HIROSHI , UENOSONO SATOSHI
IPC分类号： C21D1/18 , C21D9/30 , C22C33/02 , C22C38/00
CPC分类号： C22C33/0264 , B22F2003/248 , B22F2998/10 , C21D1/18 , C21D9/30 , C22C33/02 , C22C38/22 , C22C38/24 , B22F1/0003 , B22F3/02 , B22F3/10 , B22F3/24
摘要： PROBLEM TO BE SOLVED: To provide an iron based sintered alloy excellent in shape precision, wear resistance and low hostility to a mating material, and further having sufficient hardness after tempering, and to provide its production method.
SOLUTION: Iron based alloy powder having a composition comprising, by mass, 1 to 3.5% Cr, 0.2 to 0.9% Mo and 0.1 to 0.5% V, and the balance Fe with impurities and carbon powder are mixed so that the occupancy ratio of the carbon powder to the whole lies within the range of 0.8 to 1.1%. The mixture is compacted. The compact is sintered. The temperature of the sintered compact is temporarily reduced, and then, it is heated once more and is quenched. Thus, the iron based sintered alloy in which fine M
7 C
3 carbides are dispersed into a martensitic structure can be obtained.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供形状精度，耐磨性和对配合物的敌对性优异的铁基烧结合金，并且在回火后还具有足够的硬度，并提供其制造方法。＆lt; P＆gt;解决方案：将具有1至3.5重量％的Cr，0.2至0.9摩尔％和0.1至0.5％V的余量的Fe与杂质和碳粉末组成的铁基合金粉末混合，以使其占有率碳粉与整体的比例在0.8〜1.1％的范围内。混合物被压实。压块被烧结。烧结体的温度暂时降低，然后再次加热淬火。因此，可以获得其中细小的碳化物碳化物分散在马氏体组织中的铁基烧结合金。版权所有（C）2005，JPO＆NCIPI

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