METHOD AND APPARATUS FOR INCREASING THE RESOLUTION IN ADDITIVELY MANUFACTURED THREE-DIMENSIONAL ARTICLES
    241.
    发明申请
    METHOD AND APPARATUS FOR INCREASING THE RESOLUTION IN ADDITIVELY MANUFACTURED THREE-DIMENSIONAL ARTICLES 有权
    增加制造三维文章中分辨率的方法和装置

    公开(公告)号:US20140370323A1

    公开(公告)日:2014-12-18

    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, method of manufacturing a component and component
    242.
    发明授权
    Powder, method of manufacturing a component and component 有权
    粉末,制造组分和组分的方法

    公开(公告)号:US08911662B2

    公开(公告)日:2014-12-16

    申请号:US12519367

    申请日:2007-12-28

    Applicant: Mats Larsson

    Inventor: Mats Larsson

    Abstract: A powder for use in the powder metallurgical manufacture of components is provided. Particularly the subject matter concerns an iron or iron based powder intended for the powder metallurgical manufacturing of components. It is especially suitable for manufacturing of components wherein self-lubricating properties are desired. The subject matter further relates to a method of manufacturing a component from said powder and an accordingly produced component. A diffusion-bonded powder comprising iron or iron-based particles, and particles diffusion-bonded to the iron or iron-based particles is provided. The said particles diffusion-bonded to the iron or iron-based particles may comprise an alloy of Cu and 5% to 15% by weight of Sn. A component is provided which is at least partly formed from such a diffusion-bonded powder.

    Abstract translation: 提供用于粉末冶金制造组分的粉末。 特别地,主题涉及用于组分的粉末冶金制造的铁或铁基粉末。 特别适用于需要自润滑性能的部件的制造。 主题还涉及从所述粉末和相应产生的组分制造组分的方法。 提供了包含铁或铁基颗粒的扩散粘合粉末和扩散粘合到铁或铁基颗粒的颗粒。 扩散接合到铁或铁基颗粒的所述颗粒可以包含Cu和5重量%至15重量%的Sn的合金。 提供了至少部分地由这种扩散粘合粉末形成的部件。

    Beryllium microspheres
    245.
    发明授权
    Beryllium microspheres 有权
    铍微球

    公开(公告)号:US08852498B1

    公开(公告)日:2014-10-07

    申请号:US13451695

    申请日:2012-04-20

    Abstract: A process for fabricating hollow metal shells such as Be or Al filled with a selected gas such as D or T. An organic preform is coated with a slurry of organic binder and metal powder of Be or Al. The coated preform is heated to remove the preform and any organics to form a hollow shell which is then fired at an elevated temperature in a gas so as to seal the shell and capture the gas inside the sealed shell.

    Abstract translation: 用于制造填充有选定气体如D或T的中空金属壳(例如Be或Al)的方法。用有机粘合剂和Be或Al的金属粉末的浆料涂覆有机预制件。 加热涂覆的预成型件以除去预型体和任何有机物以形成中空壳体,然后在高温下在气体中烧制,以密封壳体并捕获密封壳体内的气体。

    First-order phase-transition La(Fe,Si)13-based magnetocaloric material showing small hysteresis loss and preparation and use thereof
    246.
    发明申请
    First-order phase-transition La(Fe,Si)13-based magnetocaloric material showing small hysteresis loss and preparation and use thereof 有权
    一阶相变La(Fe,Si)13型磁热材料,其磁滞损耗小,其制备及应用

    公开(公告)号:US20140290274A1

    公开(公告)日:2014-10-02

    申请号:US14353618

    申请日:2011-10-24

    Abstract: The invention provides a first-order phase-transition La(Fe,Si)13-based magnetocaloric material showing small hysteresis loss, and preparation and use thereof. The material has a NaZn13-type structure, is composed of granules with a particle size in the range of 15˜200 μm and not less than 15 μm, and is represented by chemical formula La1-xRx(Fe1-p-qCopMnq)13-ySiyAα. The method for preparing the material comprises steps of preparing the material La1-xRx(Fe1-p-qCopMnq)13-ySiyAα by smelting and annealing; and then crushing the material into powder with a particle size in the range of 15˜200 μm. Without changing the components, a La(Fe,Si)13-based magnetocaloric material showing small hysteresis loss and strong magnetocaloric effect can be obtained by adjusting the particle size within the range of 15˜200 μm. Utilization of this type of materials in the practical magnetic refrigeration application is of great significance. When the particle size is 10 μm or less, the stability of the magnetocaloric material is lost; the magnitude of magnetic entropy change is reduced dramatically; and thus it is no longer suitable for the practical application in magnetic refrigeration technology. Therefore, the giant magnetocaloric effect of the material can be maintained to the max if the granules with a particle size of less than 10 μm are removed by screening.

    Abstract translation: 本发明提供了一种显示小磁滞损耗的一阶相变La(Fe,Si)13基磁热材料及其制备和应用。 该材料具有NaZn13型结构,由粒径在15〜200μm且不小于15μm的颗粒组成,并由化学式La1-xRx(Fe1-p-qCopMnq)13- ySiyAα。 制备材料的方法包括通过熔炼和退火制备材料La1-xRx(Fe1-p-qCopMnq)13-ySiyAα的步骤; 然后将材料粉碎成粒径在15〜200μm的粉末。 通过调整15〜200μm范围内的粒径,可以得到不含有成分的La(Fe,Si)13系磁热材料,具有较小的磁滞损耗和强磁热效应。 这种材料在实用磁致冷应用中的应用具有重要意义。 当粒径为10μm以下时,磁热材料的稳定性将丧失; 磁熵变的幅度急剧下降; 因此不再适用于磁性制冷技术的实际应用。 因此,如果通过筛选除去粒径小于10μm的颗粒,则材料的巨磁热效应可以保持在最大值。

    Composite sintered powder metal articles
    250.
    发明授权
    Composite sintered powder metal articles 有权
    复合烧结粉末金属制品

    公开(公告)号:US08790439B2

    公开(公告)日:2014-07-29

    申请号:US13558769

    申请日:2012-07-26

    Abstract: A composite sintered powder metal article including a first region including a cemented hard particle material such as, for example, cemented carbide. The article includes a second region including: a metallic material selected from a steel, nickel, a nickel alloy, titanium, a titanium alloy, molybdenum, a molybdenum alloy, cobalt, a cobalt alloy, tungsten, a tungsten alloy; and from 0 up to 30 percent by volume of hard particles. The first region is metallurgically bonded to the second region, and each of the first region and the second region has a thickness of greater than 100 microns. The second region comprises at least one mechanical attachment feature so that the composite sintered powder metal article can be attached to another article. The article comprises one of an earth boring article, a metalcutting tool, a metalforming tool, a woodworking tool, and a wear article.

    Abstract translation: 一种复合烧结粉末金属制品,其包括第一区域,该第一区域包括例如硬质合金的粘结硬质颗粒材料。 该制品包括第二区域,其包括:选自钢,镍,镍合金,钛,钛合金,钼,钼合金,钴,钴合金,钨,钨合金的金属材料; 和0至30体积%的硬颗粒。 第一区域冶金地结合到第二区域,并且第一区域和第二区域中的每一个具有大于100微米的厚度。 第二区域包括至少一个机械附接特征,使得复合烧结粉末金属制品可以附着到另一个制品上。 该制品包括镗孔制品,金属切削工具,金属成型工具,木工工具和磨损制品中的一种。

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