METHOD AND APPARATUS FOR INCREASING THE RESOLUTION IN ADDITIVELY MANUFACTURED THREE-DIMENSIONAL ARTICLES
    41.
    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。

    Carburization of metal articles
    42.
    发明授权
    Carburization of metal articles 有权
    金属制品渗碳

    公开(公告)号:US08871036B1

    公开(公告)日:2014-10-28

    申请号:US12868233

    申请日:2010-08-25

    Abstract: The present invention relates to a process for carburizing a metal article comprising: (1) heating the metal article to an elevated temperature, (2) coating the heated metal article with a graphite suspension to produce a graphite coated metal article, wherein the graphite suspension is comprised of graphite and an organic or inorganic liquid having a boiling point of at least 50° F. (28° C.) less than the elevated temperature to which the metal article is heated, (3) heat treating the graphite coated metal article under a non-oxidizing environment at a temperature which is sufficient to promote the diffusion of carbon into the metal structure of the article to produce a carburized metal article, and (4) cooling the carburized metal article to ambient temperature.

    Abstract translation: 本发明涉及一种金属制品的渗碳方法,包括:(1)将金属制品加热到升高的温度,(2)用石墨悬浮液涂覆加热的金属制品以制备石墨涂覆的金属制品,其中石墨悬浮液 由石墨和沸点低于金属制品加热的高温至少50°F(28℃)的有机或无机液体组成,(3)对石墨涂覆的金属制品进行热处理 在足以促进碳扩散到制品的金属结构中以产生渗碳金属制品的温度下的非氧化环境下,和(4)将渗碳的金属制品冷却至环境温度。

    Mixture for Preventing Surface Stains
    44.
    发明申请
    Mixture for Preventing Surface Stains 有权
    防止表面污渍的混合物

    公开(公告)号:US20120001129A1

    公开(公告)日:2012-01-05

    申请号:US13180933

    申请日:2011-07-12

    Abstract: In order to achieve the object of providing a mixture by means of which, in particular, sintered moldings can be obtained that are virtually free of surface stains produced by soot particles, a mixture is proposed which comprises at least one pressing aid and at least one additive, wherein the additive is selected from a group of substances which have releasable carbon dioxide.

    Abstract translation: 为了实现提供混合物的目的,特别地,可以获得基本上不含烟灰颗粒产生的表面污渍的烧结模制品,提出了一种混合物,其包含至少一种压制助剂和至少一种 添加剂,其中添加剂选自具有可释放二氧化碳的一组物质。

    PHLEGMATIZED METAL POWDER OR ALLOY POWDER AND METHOD AND REACTION VESSEL FOR THE PRODUCTION THEREOF
    47.
    发明申请
    PHLEGMATIZED METAL POWDER OR ALLOY POWDER AND METHOD AND REACTION VESSEL FOR THE PRODUCTION THEREOF 有权
    有色金属粉末或合金粉末及其生产方法和反应容器

    公开(公告)号:US20100272999A1

    公开(公告)日:2010-10-28

    申请号:US12746985

    申请日:2009-01-08

    Abstract: A method and a device are described for the production of metal powder or alloy powder of a moderate grain sizes less than 10 μm, comprising or containing at least one of the reactive metals zirconium, titanium, or hafnium, by metallothermic reduction of oxides or halogenides of the cited reactive metals with the aid of a reducing metal, wherein said metal powder or alloy powder is phlegmatized by adding a passivating gas or gas mixture during and/or after the reduction of the oxides or halogenides and/or is phlegmatized by adding a passivating solid before the reduction of the oxides or halogenides, wherein both said reduction and also said phlegmatization are performed in a single gas-tight reaction vessel which can be evacuated.

    Abstract translation: 描述了通过金属热还原氧化物或卤化物来生产中等粒度小于10μm的金属粉末或合金粉末的方法和装置,其包含或含有至少一种活性金属锆,钛或铪 的所述反应性金属,其中所述金属粉末或合金粉末通过在氧化物或卤化物还原期间和/或之后添加钝化气体或气体混合物和/或通过加入钝化气体或气体混合物而被钝化 在还原氧化物或卤化物之前钝化固体,其中所述还原和所述钝化都在可以抽空的单个气密反应容器中进行。

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