METHOD FOR PRODUCING POWDER FOR MAGNET
    262.
    发明申请
    METHOD FOR PRODUCING POWDER FOR MAGNET 有权
    制造磁粉用粉末的方法

    公开(公告)号:US20160108502A1

    公开(公告)日:2016-04-21

    申请号:US14979111

    申请日:2015-12-22

    Inventor: Toru MAEDA

    Abstract: Provided are a method for producing powder for a magnet, and methods for producing a powder compact, a rare-earth-iron-based alloy material, and a rare-earth-iron-nitrogen-based alloy material. Magnetic particles constituting the powder each have a texture in which grains of a phase of a hydride of a rare-earth element are dispersed in a phase of an iron-containing material. The uniform presence of the phase of the iron-containing material in each magnetic particle results in powder having excellent formability, thereby providing a powder compact having high relative density. The powder is produced by heat-treating rare-earth-iron-based alloy powder in a hydrogen atmosphere to separate the rare-earth element and the iron-containing material and then forming a hydride of the rare-earth element. The powder is compacted. The powder compact is heat-treated in vacuum to form a rare-earth-iron-based alloy material. The rare-earth-iron-based alloy material is heat-treated in a nitrogen atmosphere to form a rare-earth-iron-nitrogen-based alloy material.

    Abstract translation: 提供一种用于制造用于磁体的粉末的方法,以及制造粉末压块,稀土 - 铁基合金材料和稀土 - 铁 - 氮基合金材料的方法。 构成粉末的磁性颗粒各自具有将稀土元素的氢化物的相的粒子分散在含铁材料的相中的结构。 每个磁性颗粒中含铁材料相的均匀存在导致具有优异成形性的粉末,从而提供具有高相对密度的粉末压块。 通过在氢气氛中热处理稀土 - 铁基合金粉末来分离稀土元素和含铁材料,然后形成稀土元素的氢化物来制造粉末。 粉末被压实。 粉末压片在真空中热处理以形成稀土 - 铁基合金材料。 稀土 - 铁基合金材料在氮气气氛中进行热处理,形成稀土 - 铁 - 氮基合金材料。

    SELECTIVE LASER SOLIDIFICATION APPARATUS AND METHOD
    264.
    发明申请
    SELECTIVE LASER SOLIDIFICATION APPARATUS AND METHOD 审中-公开
    选择性激光固化装置和方法

    公开(公告)号:US20160001401A1

    公开(公告)日:2016-01-07

    申请号:US14766627

    申请日:2014-02-13

    Applicant: RENISHAW PLC

    Abstract: Selective laser solidification apparatus is described that includes a powder bed onto which a powder layer can be deposited and a gas flow unit for passing a flow of gas over the powder bed along a predefined gas flow direction. A laser scanning unit is provided for scanning a laser beam over the powder layer to selectively solidify at least part of the powder layer to form a required pattern. The required pattern is formed from a plurality of stripes or stripe segments that are formed by advancing the laser beam along the stripe or stripe segment in a stripe formation direction. The stripe formation direction is arranged so that it always at least partially opposes the predefined gas flow direction. A corresponding method is also described.

    Abstract translation: 描述了选择性激光凝固装置,其包括可以沉积粉末层的粉末床和用于使气流沿着预定的气体流动方向通过粉末床的气流单元。 提供激光扫描单元,用于扫描粉末层上的激光束,以选择性地固化至少部分粉末层以形成所需图案。 所需的图案由通过沿着条纹形成方向沿着条纹或条纹段推进激光束而形成的多个条纹或条带形成。 条纹形成方向被布置成使得其总是至少部分地与预定的气体流动方向相对。 还描述了相应的方法。

    Method for preparing vanadium-nitrogen alloy
    265.
    发明授权
    Method for preparing vanadium-nitrogen alloy 有权
    制备钒 - 氮合金的方法

    公开(公告)号:US09227847B2

    公开(公告)日:2016-01-05

    申请号:US14049242

    申请日:2013-10-09

    Applicant: Jianwei Zheng

    Abstract: A method for preparing vanadium-nitrogen alloy, the method including: 1) mixing and pressing a vanadium-containing compound, an agglutinant, and a carbon-premixed reducing agent to yield a spherical raw material, and air drying the spherical raw material; and 2) mixing the spherical raw material with a granular carbonaceous reducing agent to yield a mixture, and continually feeding the mixture into a shaft kiln of a medium frequency induction furnace, purging the shaft kiln with pure nitrogen and maintaining a furnace pressure at between 0.01 and 0.03 mPa, drying the mixture at a temperature of between 100 and 600° C., carbonizing and nitriding at a temperature of between 900 and 1350° C., cooling the resulting product to less than 100° C., and discharging the product.

    Abstract translation: 一种制备钒 - 氮合金的方法,该方法包括:1)将含钒化合物,凝集剂和碳预混合还原剂混合并压制得到球形原料,并对球形原料进行空气干燥; 2)将球形原料与粒状碳质还原剂混合,得到混合物,并将混合物连续送入中频感应炉的竖窑中,用纯氮气吹扫竖窑,保持炉内压力在0.01 和0.03mPa,在100-600℃的温度下干燥混合物,在900-1350℃的温度下进行碳化和氮化,将所得产物冷却至小于100℃,并将产物 。

    ADSORBED WATER REMOVAL FROM TITANIUM POWDERS VIA WATER ACTIVATION
    266.
    发明申请
    ADSORBED WATER REMOVAL FROM TITANIUM POWDERS VIA WATER ACTIVATION 审中-公开
    通过水活化从钛粉中去除水分

    公开(公告)号:US20150260454A1

    公开(公告)日:2015-09-17

    申请号:US14206398

    申请日:2014-03-12

    Inventor: Thomas R. MUTH

    Abstract: A process for the removal of adsorbed water from the surface of powder materials includes the step of flowing a heated gas over the powder. The temperature of the gas is below the cracking temperature of the water. The gas is inert with the powder. An ultraviolet light is applied to the powder at a wavelength that will pass through the gas, heat the adsorbed water and desorb it, and reflect from the powder. The ultraviolet light has a wavelength between 10-185 nm. Water is removed from the powder with the flowing gas.

    Abstract translation: 从粉末材料表面去除吸附水的方法包括将加热气体流过粉末的步骤。 气体的温度低于水的裂解温度。 气体与粉末是惰性的。 将紫外线以将通过气体的波长施加到粉末,加热吸附的水并解吸,并从粉末反射。 紫外光的波长在10-185nm之间。 用流动的气体从粉末中除去水。

    Method and apparatus for increasing the resolution in additively manufactured three-dimensional articles
    269.
    发明授权
    Method and apparatus for increasing the resolution in additively manufactured three-dimensional articles 有权
    用于增加附加制造的三维制品中的分辨率的方法和装置

    公开(公告)号:US09079248B2

    公开(公告)日:2015-07-14

    申请号:US14349052

    申请日:2012-12-04

    Applicant: Arcam AB

    Inventor: Ulf Ackelid

    Abstract: A method for increasing the resolution when forming a three-dimensional article through successive fusion of parts of a powder bed, said method comprising providing a vacuum chamber, providing an electron gun, providing a first powder layer on a work table inside said vacuum chamber, directing an electron beam from said electron gun over said work table causing the powder layer to fuse in selected locations to form a first cross section of said three-dimensional article, providing a second powder layer on said work table, directing the electron beam over said work table causing said second powder layer to fuse in selected locations to form a second cross section of said three-dimensional article, reducing the pressure in the vacuum chamber from a first pressure level to a second pressure level between the providing of said first powder layer and said second powder layer.

    Abstract translation: 一种用于通过粉末床部分的连续融合来形成三维制品时的分辨率的方法,所述方法包括提供真空室,提供电子枪,在所述真空室内的工作台上提供第一粉末层, 将来自所述电子枪的电子束引导到所述工作台上,使粉末层在所选择的位置熔化以形成所述三维制品的第一横截面,在所述工作台上提供第二粉末层, 使所述第二粉末层在所选择的位置熔合以形成所述三维制品的第二横截面,从而在提供所述第一粉末层之间将真空室中的压力从第一压力水平降低到第二压力水平 和所述第二粉末层。

    Powder for magnet
    270.
    发明授权
    Powder for magnet 有权
    磁粉粉

    公开(公告)号:US09076584B2

    公开(公告)日:2015-07-07

    申请号:US13513677

    申请日:2010-12-02

    Applicant: Toru Maeda

    Inventor: Toru Maeda

    Abstract: Provided are a powder for a magnet, which provides a rare-earth magnet having excellent magnet properties and which has excellent formability, a method for producing the powder for a magnet, a powder compact, a rare-earth-iron-based alloy material, and a rare-earth-iron-nitrogen-based alloy material which are used as materials for the magnet, and methods for producing the powder compact and these alloy materials. Magnetic particles 1 constituting the powder for a magnet each have a texture in which grains of a phase 3 of a hydride of a rare-earth element are dispersed in a phase 2 of an iron-containing material, such as Fe. The uniform presence of the phase 2 of the iron-containing material in each magnetic particle 1 results in the powder having excellent formability, thereby providing a powder compact 4 having a high relative density. The powder for a magnet is produced by heat-treating a rare-earth-iron-based alloy powder in a hydrogen atmosphere to separate the rare-earth element and the iron-containing material from each other and then forming a hydride of the rare-earth element. The powder for a magnet is subjected to compacting to form the powder compact 4. The powder compact 4 is subjected to heat treatment in vacuum to form a rare-earth-iron-based alloy material 5. The rare-earth-iron-based alloy material 5 is subjected to heat treatment in a nitrogen atmosphere to form a rare-earth-iron-nitrogen-based alloy material 6.

    Abstract translation: 提供一种用于磁体的粉末,其提供具有优异的磁性能并且具有优异的成形性的稀土磁体,用于制造用于磁体的粉末的方法,粉末压块,稀土 - 铁基合金材料, 以及作为磁铁材料使用的稀土 - 铁 - 氮系合金材料以及这些合金材料的制造方法。 构成磁体用粉末的磁性粒子1具有将稀土类元素的氢化物的相3的粒子分散在Fe等含铁材料的相2中的结构。 每个磁性颗粒1中含铁材料的相2的均匀存在导致具有优异成形性的粉末,从而提供具有高相对密度的粉末压块4。 通过在氢气氛中对稀土类铁系合金粉末进行热处理,将稀土类元素和含铁物质分离,然后形成稀土类铁系合金粉末, 地球元素 对磁体粉末进行压实以形成粉末压块4.粉末压块4在真空中进行热处理以形成稀土 - 铁基合金材料5.稀土 - 铁基合金 材料5在氮气气氛中进行热处理,形成稀土 - 铁 - 氮基合金材料6。

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