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    Electromagnetic wave absorber
    15.
    发明专利
    Electromagnetic wave absorber 审中-公开
    电磁波吸收器

    公开(公告)号：JP2006073949A

    公开(公告)日：2006-03-16

    申请号：JP2004258670

    申请日：2004-09-06

    Applicant: Showa Denko Kk ,  昭和電工株式会社

    Inventor： HIRATA MOTOYUKI ,  UTSUNOMIYA MASAHIDE

    IPC: H05K9/00 ,  C08K3/00 ,  C08K5/00 ,  C08L63/00 ,  C08L101/08 ,  H01F1/00 ,  H01F1/26 ,  H01F1/37

    Abstract: PROBLEM TO BE SOLVED: To provide an electromagnetic wave absorber which has a sufficient flame resistance, an electromagnetic wave absorbing characteristic, a flexibility and an excellent chemical resistance. SOLUTION: A flame resistance electromagnetic wave absorbing material composition contains (A) a compound having two pieces or more of carboxyl group and/or acid anhydride group thereof in one molecule, (B) a compound having two pieces or more epoxy group in one molecule, (C) a soft magnetic powder, and (D) a fire retarding material. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：提供具有足够的阻燃性，电磁波吸收特性，柔韧性和优异的耐化学性的电磁波吸收体。 解决方案：阻燃电磁波吸收材料组合物包含（A）在一个分子中具有两个或更多个羧基和/或酸酐基团的化合物，（B）具有两个或更多个环氧基的化合物 在一分子中，（C）软磁性粉末，（D）阻燃材料。 版权所有（C）2006，JPO＆NCIPI

    SOLDER PASTE
    16.
    发明专利
    SOLDER PASTE 失效

    公开(公告)号：JPH10128573A

    公开(公告)日：1998-05-19

    申请号：JP30086396

    申请日：1996-10-28

    Applicant: SHOWA DENKO KK

    Inventor： SAEDA SHIGERU ,  SAKURAI TETSURO ,  TAGUCHI ISAMU ,  UTSUNOMIYA MASAHIDE

    IPC: B23K35/22 ,  B23K35/363 ,  C09J11/06 ,  C09J201/04

    Abstract: PROBLEM TO BE SOLVED: To provide a solder paste in which the organic halide compound to be blended to improve the solder wettability is sufficiently decomposed under the reflow condition without generating any ionic halogen, the performance as the solder paste is kept, and further the solder wettability is kept in a excellent condition, and the reliability of the product is excellent for a long time even without any cleaning. SOLUTION: In the solder paste in which the organic halide compound is blended as the activator, the flux in which 0.005-2.0wt.% polymer containing at least one of polyethylene glycol, poly-N-vinyl acetamide and poly-acrylic acid having the complex forming ability to the metal is added to the total weight of the flux, is blended.

    CREAM SOLDER
    17.
    发明专利
    CREAM SOLDER 失效

    公开(公告)号：JPH02175095A

    公开(公告)日：1990-07-06

    申请号：JP32997788

    申请日：1988-12-27

    Applicant: SHOWA DENKO KK

    Inventor： HARITA HARUHISA ,  UTSUNOMIYA MASAHIDE ,  SHOJI TAKASHI

    IPC: B23K35/363 ,  B23K35/36

    Abstract: PURPOSE:To prevent sagging and balling of solder by adding glyceride having the b. p. of a specific temp. or above at a specific ratio into a flux of the cream solder, the solder powder of which is spherical powder. CONSTITUTION:The solder powder is oxygenfree solder powder, for which the spherical powder having about =200 deg.C b. p. as the thixotropic agent, and kneading the mixture. The thixotropic property of the cream solder is lost at the time of reflow when the b. p. of the glyceride is =10%. The sagging and balling of the solder at the time of reflow are thus obviated.

    CREAM SOLDER
    18.
    发明专利
    CREAM SOLDER 失效

    公开(公告)号：JPH02175094A

    公开(公告)日：1990-07-06

    申请号：JP32997688

    申请日：1988-12-27

    Applicant: SHOWA DENKO KK

    Inventor： HARITA HARUHISA ,  UTSUNOMIYA MASAHIDE ,  SHOJI TAKASHI

    IPC: B23K35/363 ,  B23K35/36

    Abstract: PURPOSE:To prevent balling at the time of reflow by adding a fatty acid amine compd. at a specific ratio into a flux of the cream solder, the solder powder of which is spherical powder. CONSTITUTION:The solder powder is oxygenfree solder powder, for which the spherical powder having about =24 hours after printing. The sufficient protection of the solder surface is not possible when content of the antioxidant is =5%. The balling is obviated at the time of reflow and the workability in a mounting line is improved.

    Method for manufacturing rare earth alloy, alloy lump for r-t-b magnet, r-t-b magnet, r-t-b bonded magnet, alloy lump for r-t-b exchangeable spring magnet, r-t-b exchangeable spring magnet and r-t-b exchangeable spring bonded magnet
    19.
    发明专利
    Method for manufacturing rare earth alloy, alloy lump for r-t-b magnet, r-t-b magnet, r-t-b bonded magnet, alloy lump for r-t-b exchangeable spring magnet, r-t-b exchangeable spring magnet and r-t-b exchangeable spring bonded magnet 有权
    用于制造R-T-B磁铁的R-T-B磁铁，R-T-B磁铁，R-T-B键合磁铁，用于R-T-B可交换弹簧的合金线，R-T-B可交换弹簧磁铁和R-T-B可交换弹簧连接磁铁的方法

    公开(公告)号：JP2003334643A

    公开(公告)日：2003-11-25

    申请号：JP2002195404

    申请日：2002-07-04

    Applicant: Showa Denko Kk ,  昭和電工株式会社

    Inventor： HASEGAWA HIROSHI ,  UTSUNOMIYA MASAHIDE

    IPC: B22D13/10 ,  B22F1/00 ,  B22F3/00 ,  B22F9/08 ,  C21D6/00 ,  C22C38/00 ,  H01F1/053 ,  H01F1/08

    Abstract: PROBLEM TO BE SOLVED: To provide a method for raising the heat transfer rate of a cast lump from a casting mold surface to the inner wall surface of a casting mold when a rare earth alloy or particularly an alloy for an R-T-B magnet is manufactured by a centrifugal casting method and to thereby manufacture the alloy for the R-T-B magnet having microcrystalline grains which have not heretofore been. SOLUTION: The method for manufacturing a rare earth alloy by a centrifugal casting method comprises a step of mounting a film having a small thermal conductivity than that of a casting mold material on the inner wall surface of a cylindrical casting mold. The thermal conductivity of the film is 80 W/mK or less. COPYRIGHT: (C)2004,JPO

    Abstract translation: 要解决的问题：提供一种当铸态模具表面向铸模内壁表面提高铸块的传热速率的方法，当稀土合金或特别是RTB磁体的合金为 通过离心铸造法制造，从而制造具有未经过微晶晶粒的RTB磁体的合金。 解决方案：通过离心铸造方法制造稀土合金的方法包括将具有小于铸模材料的导热性小的膜安装在圆柱形铸模的内壁表面上的步骤。 膜的导热率为80W / mK以下。 版权所有（C）2004，JPO

    Rare-earth magnetic alloy agglomeration, its manufacturing method and sintered magnet
    20.
    发明专利
    Rare-earth magnetic alloy agglomeration, its manufacturing method and sintered magnet 有权
    稀土磁合金，其制造方法和烧结磁铁

    公开(公告)号：JP2003077717A

    公开(公告)日：2003-03-14

    申请号：JP2001266278

    申请日：2001-09-03

    Applicant: Showa Denko Kk ,  昭和電工株式会社

    Inventor： UTSUNOMIYA MASAHIDE ,  HASEGAWA HIROSHI ,  ITO TADANAO

    IPC: C22C38/00 ,  C22C38/08 ,  H01F1/053 ,  H01F1/057 ,  H01F1/08

    CPC classification number: H01F1/0571

    Abstract: PROBLEM TO BE SOLVED: To solve the problem that, as when shifting to a component side of R of low concentration in a R-T-B-based magnet alloy, a ratio that a R-rich phase is present is decreased, densification cannot be expected when sintered to a magnet, and further an improvement cannot be expected in coercive force. SOLUTION: In a rare-earth magnet alloy agglomeration, an R-T-B-based magnet alloy contains an element of a type or more of Nd, Pr and Dy having 11.8 to 15.2 atomic % in all and B of 5.6 to 7.9 atomic % (R is of a type out of rare-earth elements containing Y, T has Fe as a main component, and a part thereof can be replaced with Co, Ni, or the like). Still, in a state of being cast, an R-rich phase of length 100 μm or more is not found substantially in cross section. In a method for manufacturing the rare-earth magnet alloy agglomeration, a melt 31 is received by a rotator 5 and is scattered by rotation of the rotator, and the scattered melt is deposited and fixed 7 on an inner plane of a rotating cylindrical die 4 of which the inner plane has a recessed and/or projected unsmoothed surface.

    Abstract translation: 要解决的问题为了解决当在RTB系磁铁合金中向低浓度的R的成分侧移动时，存在富R相的比例降低，当烧结时不能预期致密化 并且在矫顽力方面不能期待改善。 解决方案：在稀土磁体合金凝聚体中，RTB系磁铁合金含有Nd，Pr，Dy等级以上的元素全部为11.8〜15.2原子％，B为5.6〜7.9原子％（R为 是含有Y的稀土类元素的一种，T以Fe为主成分，其一部分可以被Co，Ni等取代）。 然而，在铸造状态下，基本上没有发现长度为100μm以上的富R相。 在稀土类磁铁合金凝聚体的制造方法中，熔融体31被旋转体5收纳，通过旋转体的旋转而散射，将散射的熔融物7沉积固定在旋转的圆筒状模具4的内侧面 其中内平面具有凹入和/或投影的未平滑表面。

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