HIGH STRENGTH HARD ALLOY AND METHOD OF PREPARING THE SAME
    62.
    发明申请
    HIGH STRENGTH HARD ALLOY AND METHOD OF PREPARING THE SAME 失效
    高强度硬质合金及其制备方法

    公开(公告)号:US20110109020A1

    公开(公告)日:2011-05-12

    申请号:US12983561

    申请日:2011-01-03

    Abstract: A method for producing a cemented carbide material includes producing an M3C type double carbide (wherein M comprises M1 and M2; M1 represents one or more elements selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W; and M2 represents one or more elements selected from the group consisting of Fe, Co and Ni) as a main component of the surface portion; reducing heat treating the compact at a vacuum atmosphere; carburizing the resulting WC—Co compact at a temperature of 800 to 1100° C.; subjecting the carburized compact to liquid phase sintering at a temperature of more than 1350° C. to form a sintered body; and coating a surface layer of the sintered body with a compound containing boron and/or silicon and subjecting the coated sintered body to a diffusion heat treatment at a temperature within a range from 1200 to 1350° C.

    Abstract translation: 制造硬质合金材料的方法包括制造M3C型双碳化物(其中M包括M1和M2; M1表示选自Ti,Zr,Hf,V,Nb,Ta,Cr,Mo中的一种或多种元素 和W; M2表示选自Fe,Co和Ni中的一种或多种元素)作为表面部分的主要成分; 在真空气氛下还原热处理压块; 在800〜1100℃的温度下对得到的WC-Co压坯进行渗碳。 使渗碳压实体在大于1350℃的温度下进行液相烧结以形成烧结体; 并用含有硼和/或硅的化合物涂覆烧结体的表面层,并使涂覆的烧结体在1200〜1350℃的范围内进行扩散热处理。

    PHLEGMATIZED METAL POWDER OR ALLOY POWDER AND METHOD AND REACTION VESSEL FOR THE PRODUCTION THEREOF
    63.
    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。

    Wear resistant sintered member
    65.
    发明授权
    Wear resistant sintered member 有权
    耐磨烧结体

    公开(公告)号:US07575619B2

    公开(公告)日:2009-08-18

    申请号:US11387887

    申请日:2006-03-24

    Abstract: A wear resistant sintered member comprising an Fe base alloy matrix and a hard phase dispersed in the Fe base alloy matrix and having an alloy matrix and hard particles precipitated and dispersed in the alloy matrix. Manganese sulfide particles having particle size of 10 μm or less are uniformly dispersed in crystal grains of the overall Fe base alloy matrix, and manganese sulfide particles having particle size of 10 μm or less are dispersed in the alloy matrix of the hard phase.

    Abstract translation: 一种耐磨烧结构件,其包含Fe基合金基体和分散在Fe基合金基体中的硬相,并且具有沉积并分散在合金基体中的合金基体和硬颗粒。 粒径为10μm以下的硫化锰粒子均匀地分散在Fe基合金基体的整个晶粒中,粒径为10μm以下的硫化锰粒子分散在硬质合金基体中。

    Hard-particle powder for sintered body and sintered body
    66.
    发明申请
    Hard-particle powder for sintered body and sintered body 有权
    用于烧结体和烧结体的硬质颗粒粉末

    公开(公告)号:US20090165595A1

    公开(公告)日:2009-07-02

    申请号:US12314945

    申请日:2008-12-19

    Abstract: The invention provides a hard-particle powder for sintered body, which contains, by mass %, 2% to 3.5% of Si, 6% to 10% of Cr, 20% to 35% of Mo, 0.01% to 0.5% of REM, and the remainder being Co and unavoidable impurities. The invention further provides a sintered body obtained through a mixing step of mixing the above-mentioned hard-particle powder for sintered body with a pure iron powder and a graphite powder to obtain a powder mixture, a forming step of compacting the powder mixture to obtain a compact, and a sintering step of sintering the compact. The hard-particle powder according to the invention has the effect of giving a sintered body having improved wear resistance without substantially impairing powder characteristics and sintering characteristics. Additionally, the sintered body according to the invention has the effect of having excellent wear resistance.

    Abstract translation: 本发明提供一种烧结体用硬质粉末,其以质量%计含有2%〜3.5%的Si,6%〜10%的Cr,20%〜35%的Mo,0.01%〜0.5%的REM ,其余为Co和不可避免的杂质。 本发明还提供一种通过将上述烧结体用硬质粉末与纯铁粉末和石墨粉末混合以获得粉末混合物的混合步骤获得的烧结体,将粉末混合物压实成型步骤 压实和烧结步骤。 根据本发明的硬质颗粒粉末具有赋予具有改善的耐磨性的烧结体,而不会明显损害粉末特性和烧结特性。 此外,根据本发明的烧结体具有优异的耐磨性。

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