Method and atmosphere for extending belt life in sintering furnace
    41.
    发明授权
    Method and atmosphere for extending belt life in sintering furnace 有权
    烧结炉延长带寿命的方法和气氛

    公开(公告)号:US08986605B2

    公开(公告)日:2015-03-24

    申请号:US12966440

    申请日:2010-12-13

    Abstract: Disclosed herein is a method and gas atmosphere for a metal component in a continuous furnace. In one embodiment, the method and gas atmosphere comprises the use of an effective amount, or about 1 to about 10 percent volume of endo-gas, into an atmosphere comprising nitrogen and hydrogen. In another embodiment, there is provided a method sintering metal components in a furnace at a one or more operating temperatures comprising: providing a furnace comprising a belt comprising a wire mesh material wherein the metal components are supported thereupon; and sintering the components in the furnace in an atmosphere comprising nitrogen, hydrogen, and effective amount of endothermic gas at the one or more operating temperatures ranging from about 1800° F. to about 2200° F. wherein the amount of endothermic gas in the atmosphere is such that it is oxidizing to the wire mesh material and reducing to the metal components.

    Abstract translation: 本文公开了连续炉中的金属成分的方法和气体气氛。 在一个实施方案中,所述方法和气体气氛包括使用有效量(或约1至约10体积%的内含气体)到包含氮气和氢气的气氛中。 在另一个实施方案中,提供了一种在一个或多个操作温度下在炉中烧结金属组分的方法,包括:提供包括包含金属丝网材料的带的炉子,其中金属组分被支撑在其上; 以及在约1800°F至约2200°F的一个或多个操作温度下,在包括氮气,氢气和有效量的吸热气体的气氛中烧结炉中的组分。其中吸入气体在大气中的量 使得其对金属丝网材料氧化并且还原成金属成分。

    Dispersoid reinforced alloy powder and method of making
    43.
    发明授权
    Dispersoid reinforced alloy powder and method of making 有权
    分散增强合金粉末及其制造方法

    公开(公告)号:US08864870B1

    公开(公告)日:2014-10-21

    申请号:US13506683

    申请日:2012-05-09

    Abstract: A method of making dispersion-strengthened alloy particles involves melting an alloy having a corrosion and/or oxidation resistance-imparting alloying element, a dispersoid-forming element, and a matrix metal wherein the dispersoid-forming element exhibits a greater tendency to react with a reactive species acquired from an atomizing gas than does the alloying element. The melted alloy is atomized with the atomizing gas including the reactive species to form atomized particles so that the reactive species is (a) dissolved in solid solution to a depth below the surface of atomized particles and/or (b) reacted with the dispersoid-forming element to form dispersoids in the atomized particles to a depth below the surface of said atomized particles. Bodies made from the dispersion strengthened solidified particles exhibit enhanced fatigue and creep resistance and reduced wear as well as enhanced corrosion and/or oxidation resistance at high temperatures.

    Abstract translation: 制造分散强化合金颗粒的方法包括熔化具有腐蚀和/或抗氧化性赋予合金元素,分散质形成元素和基质金属的合金,其中分散质形成元素表现出更大的与 从雾化气体获得的反应物质比合金元素。 熔化的合金与包括反应性物质的雾化气体雾化以形成雾化颗粒,使得反应性物质(a)溶解在固溶体中至雾化颗粒表面下方的深度和/或(b)与分散质 - 形成元素以在雾化颗粒中形成分散质,使其在所述雾化颗粒的表面下方的深度。 由分散体增强的固化颗粒制成的体表现出增强的疲劳和抗蠕变性和降低的磨损以及在高温下增强的耐腐蚀和/或抗氧化性能。

    Free-machining powder metallurgy steel articles and method of making same
    45.
    发明授权
    Free-machining powder metallurgy steel articles and method of making same 有权
    自由加工粉末冶金钢制品及其制造方法

    公开(公告)号:US08795584B2

    公开(公告)日:2014-08-05

    申请号:US13592541

    申请日:2012-08-23

    Abstract: A small diameter, elongated steel article, comprising fully consolidated, prealloyed metal powder is disclosed. The consolidated metal powder has a microstructure that has a substantially uniform distribution of fine grains having a grain size of not larger than about 9 when determined in accordance with ASTM Standard Specification E 112. The microstructure of the consolidated metal powder is further characterized by having a plurality of substantially spheroidal carbides uniformly distributed throughout the consolidated metal powder that are not greater than about 6 microns in major dimension and a plurality of sulfides uniformly distributed throughout the consolidated metal powder wherein the sulfides are not greater than about 2 microns in major dimension. A process for making the elongated steel article is also disclosed.

    Abstract translation: 公开了一种包括完全固结的预合金金属粉末的小直径细长钢制品。 固结的金属粉末具有根据ASTM标准规范E 112确定时具有基本均匀分布的具有不大于约9的粒度的微细颗粒的微结构。固结金属粉末的微结构进一步的特征在于具有 多个基本上球形的碳化物均匀分布在整个金属粉末中,其主要尺寸不大于约6微米,并且多个硫化物均匀分布在整个固结的金属粉末中,其中硫化物在主要尺寸上不大于约2微米。 还公开了制造细长钢制品的方法。

    TITANIUM ALLOY MEMBER AND PRODUCTION METHOD THEREFOR
    47.
    发明申请
    TITANIUM ALLOY MEMBER AND PRODUCTION METHOD THEREFOR 有权
    钛合金会员及其生产方法

    公开(公告)号:US20140112819A1

    公开(公告)日:2014-04-24

    申请号:US14123620

    申请日:2012-04-27

    Abstract: A titanium alloy member with high strength and high proof stress not only in the surface but also inside, using a general and inexpensive α-β type titanium alloy, and a production method therefor, are provided. The production method includes preparing a raw material made of titanium alloy, nitriding the raw material to form a nitrogen-containing raw material by generating a nitrogen compound layer and/or a nitrogen solid solution layer in a surface layer of the raw material, mixing the raw material and the nitrogen-containing raw material to yield a nitrogen-containing mixed material, sintering the nitrogen-containing mixed material to obtain a sintered titanium alloy member by bonding the material together and uniformly diffusing nitrogen in solid solution from the nitrogen-containing raw material to the entire interior portion of the sintered titanium alloy member, and hot plastic forming the sintered titanium alloy member.

    Abstract translation: 一种钛合金元件,不仅在表面而且内部具有高强度和高的应力应变,而且具有普遍和便宜的α- 型钛合金及其制造方法。 制造方法包括:制备钛合金原料,通过在原料的表面层中产生氮化合物层和/或氮固溶体层,将原料渗氮以形成含氮原料,将 原料和含氮原料混合,得到含氮混合材料,烧结含氮混合材料,通过将该材料粘合在一起并将固氮中的氮均匀地从含氮原料 材料到钛烧结合金构件的整个内部,以及形成烧结钛合金构件的热塑性材料。

    Recycling of tungsten carbides
    48.
    发明授权
    Recycling of tungsten carbides 失效
    回收碳化钨

    公开(公告)号:US08685137B2

    公开(公告)日:2014-04-01

    申请号:US13500313

    申请日:2010-10-26

    Inventor: Johan Arvidsson

    Abstract: The invention relates to a process for producing an iron-and/or tungsten containing powder or powder agglomerate including the steps of: a) mixing at least a first powder fraction comprising a tungsten carbide containing powder, and at least a second powder fraction comprising an iron oxide powder and/or a tungsten oxide containing powder and optionally an iron powder, the weight of the first fraction being in the range of 50-90% by weight of the mix and the weight of the second fraction being in the range of 10-50% by weight of the mix, b) heating the mix of step a) to a temperature in the range of 400-1300° C., preferably 1000-1200° C. The invention also relates to an iron-and/or tungsten containing powder or powder agglomerate.

    Abstract translation: 本发明涉及一种生产含铁和/或钨的粉末或粉末附聚物的方法,包括以下步骤:a)将包含含碳化钨的粉末的至少第一粉末部分和至少包含第 氧化铁粉末和/或含氧化钨粉末和任选的铁粉末,第一部分的重量在混合物的50-90重量%的范围内,第二部分的重量在10 -50重量%的混合物,b)将步骤a)的混合物加热至400-1300℃,优选1000-1200℃的温度。本发明还涉及铁和/或 含钨粉末或粉末附聚物。

    Dispersoid reinforced alloy powder and method of making
    49.
    发明授权
    Dispersoid reinforced alloy powder and method of making 有权
    分散增强合金粉末及其制造方法

    公开(公告)号:US08603213B1

    公开(公告)日:2013-12-10

    申请号:US12072298

    申请日:2008-02-25

    Abstract: A method of making dispersion-strengthened alloy particles involves melting an alloy having a corrosion and/or oxidation resistance-imparting alloying element, a dispersoid-forming element, and a matrix metal wherein the dispersoid-forming element exhibits a greater tendency to react with an introduced reactive species than does the alloying element and wherein one or more atomizing parameters is/are modified to controllably reduce the amount of the reactive species, such as oxygen, introduced into the atomized particles so as to reduce anneal times and improve reaction (conversion) to the desired strengthening dispersoids in the matrix. The atomized alloy particles are solidified as solidified alloy particles or as a solidified deposit of alloy particles. Bodies made from the dispersion strengthened alloy particles, deposit thereof, exhibit enhanced fatigue and creep resistance and reduced wear as well as enhanced corrosion and/or oxidation resistance at high temperatures by virtue of the presence of the corrosion and/or oxidation resistance imparting alloying element in solid solution in the particle alloy matrix.

    Abstract translation: 制造分散强化合金颗粒的方法包括熔化具有腐蚀和/或抗氧化性赋予合金元素,分散质形成元素和基质金属的合金,其中分散质形成元素表现出更大的与 引入反应性物质,并且其中一个或多个雾化参数被修饰以可控地减少引入到雾化颗粒中的反应物质如氧的量,以减少退火时间并改善反应(转化) 到基质中所需的强化分散体。 雾化的合金颗粒作为固化合金颗粒固化,或作为合金颗粒的固化沉积物固化。 由分散强化的合金颗粒,其沉积物,由于存在耐腐蚀和/或抗氧化性赋予的合金元素,在高温下表现出增强的疲劳和抗蠕变性和降低的磨损以及增强的耐腐蚀和/或耐氧化性。 在颗粒合金基质中的固溶体。

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