Tungsten heavy alloy for penetrating splinter shell and forming method thereof

    公开(公告)号:US20040033155A1

    公开(公告)日:2004-02-19

    申请号:US10345968

    申请日:2003-01-17

    IPC分类号: C22C027/04

    摘要: Disclosed are a tungsten material for a penetrating splinter shell and forming method thereof enabling a penetrator to perforate a hard target on high-speed impact as well as having the following splinter cause a severe damage on an inner component by changing a breakage characteristic of the material into brittle fracture from ductile fracture in a manner that a mechanical characteristic of the material is adjusted by controlling a sintering condition and a composition ratio of a tungsten heavy alloy material having Mo added thereto. The present invention includes the steps of mixing 90null95 wt % W powder, 3.0null8.0 wt % Mo powder, 0.5null3.0 wt % Ni powder, and 1.0null4.0 wt % Fe powder with each other, molding the mixed powders, and sintering the molded powders.

    Ductile medium-and high-density, non-toxic shot and other articles and method for producing the same
    2.
    发明申请
    Ductile medium-and high-density, non-toxic shot and other articles and method for producing the same 有权
    球墨铸铁中高密度,无毒喷丸等制品及其制造方法

    公开(公告)号:US20020121317A1

    公开(公告)日:2002-09-05

    申请号:US09923927

    申请日:2001-08-06

    发明人: Darryl D. Amick

    摘要: Medium- and high-density articles are formed from melting and casting alloys containing tungsten, iron, nickel and optionally manganese and/or steel. In some embodiments, the articles have densities in the range of 8-10.5 g/cm3, and in other embodiments, the articles have densities in the range of 10.5-15 g/cm3. In some embodiments, the articles are ferromagnetic, and in others the articles are not ferromagnetic. In some embodiments, tungsten forms the largest weight percent of the alloy, and in other embodiments the alloy contains no more than 50 wt % tungsten. In some embodiments, the articles are shell shot.

    摘要翻译: 中,高密度制品由含钨,铁,镍和任选的锰和/或钢的熔融和铸造合金形成。 在一些实施方案中,制品的密度在8-10.5g / cm 3的范围内,在其它实施方案中,制品的密度在10.5-15g / cm 3的范围内。 在一些实施例中,制品是铁磁性的,而在另一些实施例中,制品不是铁磁性的。 在一些实施方案中,钨形成合金的最大重量百分比,在其它实施方案中,合金含有不超过50wt%的钨。 在一些实施例中,物品是炮弹的。

    High strength alloys and methods for making same
    3.
    发明申请
    High strength alloys and methods for making same 失效
    高强度合金及其制造方法

    公开(公告)号:US20020088508A1

    公开(公告)日:2002-07-11

    申请号:US10035683

    申请日:2001-11-01

    IPC分类号: C22C027/04

    摘要: A family of extremely fine-grained alloys are used to make coatings or free-standing bodies having desirable properties for use as a heat-resistant and wear-resistant material. In an illustrative embodiment, the alloys are comprised of a multiplicity of alternate, microcrystalline or nanocrystalline films of tungsten metal and tungsten compound. The tungsten compound film may be comprised of a tungsten carbide or a tungsten boride. The tungsten films are the primary films. Their desirable characteristics, in addition to their very fine crystalline habit, per se, are the high strength, high hardness, high resilience, and high fracture energy which these fine crystallites foster. They may be manufactured by a chemical vapor deposition process in which reactive gas flows are rapidly switched to produce alternate films with abrupt hetero-junctions and thereby to produce the useful micro-crystalline habit. The unique synthesis method allows effective control of critical flaw size. The structure is such that the primary films may be made sufficiently thick so as to assure some desirable ductile behavior, but sufficiently thin so as to have high yield strength by dint of their microcrystalline size, and as to limit the size of any flaws. The secondary films are made of enough thickness to prevent the epitaxial growth from one primary film to the next-deposited primary film and thin enough so that they can not contain a flaw of critical size. In addition, the exterior surface of any body made by this method may have a sufficiently smooth surface that the strength of the body is determined by the bulk properties of the material and not by surface flaws.

    摘要翻译: 一类非常细小的合金被用于制造具有期望性能的涂层或独立体,用作耐热和耐磨材料。 在说明性实施例中,合金由钨金属和钨化合物的多个交替的微晶或纳米晶体膜组成。 钨化合物膜可以由碳化钨或硼化钨组成。 钨膜是初级膜。 除了它们非常细的结晶习性之外,它们的理想特性本身是这些微晶所促成的高强度,高硬度,高弹性和高断裂能。 它们可以通过化学气相沉积工艺制造,其中反应气体流动快速切换以产生具有突变异质结的交替膜,从而产生有用的微晶习性。 独特的合成方法可以有效控制关键缺陷大小。 该结构使得初级膜可以制得足够厚,以确保一些期望的延展性,但是足够薄,以便通过它们的微晶尺寸具有高屈服强度,并限制任何缺陷的尺寸。 二次膜由足够的厚度制成,以防止从一个初级膜到下一次沉积的初级膜的外延生长,并且足够薄,使得它们不能包含临界尺寸的缺陷。 此外,通过该方法制造的任何主体的外表面可以具有足够光滑的表面,使得身体的强度由材料的整体性质而不是表面缺陷确定。

    Tunsten wire, cathode heater, and filament for vibration service lamp
    4.
    发明申请
    Tunsten wire, cathode heater, and filament for vibration service lamp 审中-公开
    Tunsten线,阴极加热器和振动服务灯丝

    公开(公告)号:US20040244879A1

    公开(公告)日:2004-12-09

    申请号:US10491793

    申请日:2004-04-06

    IPC分类号: C22C027/04

    摘要: A tungsten wire containing 1 to 10% by mass of rhenium has a point which indicates a 2% elongation within a quadrangle formed by joining points with straight lines, where the values of x and y are point (20, 75), point (20, 87), point (90, 75), and point (90, 58), in this order, wherein the wire diameter of the aforementioned tungsten wire is represented by x nullm, and the elongation of the tungsten wire is 2% after electrically heating with an electrical current which is a ratio of y % to the fusion current (FC) at the wire diameter x nullm, and wherein a semi-logarithmic system of coordinates is expressed by a horizontal axis using a logarithmic scale of the aforementioned wire diameter x and a vertical axis using a normal scale of ratio y to the fusion current. According to the above-described configuration, a tungsten wire having a great elongation even under conditions of high temperature can be provided, and the tungsten wire can exhibit an excellent durability when used as component material for constituting cathode heaters and so forth, and the tungsten wire can be manufactured efficiently.

    摘要翻译: 含有1〜10质量%铼的钨丝具有表示在通过连接点与直线形成的四边形内的2%伸长率的点,其中x和y的值为点(20,75),点(20 ,87),点(90,75)和点(90,58),其中上述钨丝的线直径由x mum表示,并且在钨电极之后,钨丝的伸长率为2% 以线径x mum的y%与熔融电流(FC)的比例的电流进行加热,并且其中使用上述线径的对数标度由水平轴表示坐标的半对数系统 x和垂直轴,使用与融合电流的比率y的正常刻度。 根据上述结构,能够提供即使在高温条件下具有大的伸长率的钨丝,并且当用作构成阴极加热器等的组分材料时,钨丝可以表现出优异的耐久性,钨 电线可以有效地制造。

    Large diameter tungsten-lanthana rod
    5.
    发明申请
    Large diameter tungsten-lanthana rod 失效
    大直径钨 - 镧棒

    公开(公告)号:US20030221755A1

    公开(公告)日:2003-12-04

    申请号:US10160751

    申请日:2002-05-31

    IPC分类号: C22C027/04

    摘要: A large-diameter tungsten-lanthana rod having an elongated grain structure substantially parallel to the longitudinal axis of the rod is described. The large diameter rod is produced by rolling at a temperature greater than 1400null C. and less than 1700null C. to achieve at least about a 40% reduction in cross-sectional area. The high strength of the longitudinally elongated grain structure is desirable for applications such as rocket nozzles.

    摘要翻译: 描述了具有基本上平行于棒的纵向轴线的细长晶粒结构的大直径钨 - 镧棒。 大直径杆通过在大于1400℃和小于1700℃的温度下轧制而产生,以实现至少约40%的横截面积减小。 纵向细长的晶粒结构的高强度对于诸如火箭喷嘴的应用是理想的。