Polycrystalline superhard material
    71.
    发明授权
    Polycrystalline superhard material 有权
    多晶超硬材料

    公开(公告)号:US09120204B2

    公开(公告)日:2015-09-01

    申请号:US13641390

    申请日:2011-04-20

    申请人: Robert Fries

    发明人: Robert Fries

    摘要: A polycrystalline superhard material comprises a sintered mass of superhard grains having a mean superhard grain contiguity of at least 62 percent and at most 92 percent. There is also disclosed a method of making such a polycrystalline superhard material. The method comprises providing a precursor body comprising superhard grains and interstices between the superhard grains, and introducing additive particles into the interstices to form a pre-sinter body. The pre-sinter body is submitted to a temperature and pressure at which superhard material is thermodynamically stable, sintering it and forming polycrystalline superhard material.

    摘要翻译: 多晶超硬材料包括具有至少62%且至多92%的平均超硬颗粒接近度的超硬颗粒的烧结块。 还公开了制造这种多晶超硬材料的方法。 该方法包括提供包含超硬颗粒和超硬颗粒之间的间隙的前体体,并将添加剂颗粒引入到间隙中以形成预烧结体。 预烧结体承受超硬材料在热力学上稳定的温度和压力,烧结并形成多晶超硬材料。

    Method for making cemented carbide products
    73.
    发明授权
    Method for making cemented carbide products 有权
    制造硬质合金产品的方法

    公开(公告)号:US09029456B2

    公开(公告)日:2015-05-12

    申请号:US13201951

    申请日:2010-02-16

    摘要: The invention relates to a method for making cemented carbide or cermet parts, comprises mixing a binder system with cemented carbide powder or cermet powder to form a feedstock, and injection molding or extruding the feedstock to form the cemented carbide or cermet parts, wherein the binder system comprises 30-60 wt % olefinic polymers, 40-70 wt % waxes, and 2.5-10 wt % petroleum jelly CAS 8009-03-8, the feedstock has a solids loading of φ=0.54-0.56.

    摘要翻译: 本发明涉及一种用于制造硬质合金或金属陶瓷部件的方法,包括将粘合剂体系与硬质合金粉末或金属陶瓷粉末混合以形成原料,以及注射成型或挤出原料以形成硬质合金或金属陶瓷部件,其中粘合剂 系统包含30-60重量%的烯烃聚合物,40-70重量%的蜡和2.5-10重量%的果冻CAS 8009-03-8,原料具有< 0.54-0.56的固体负载。

    Cermet body and a method of making a cermet body
    74.
    发明授权
    Cermet body and a method of making a cermet body 有权
    金属陶瓷体和制造金属陶瓷体的方法

    公开(公告)号:US08968642B2

    公开(公告)日:2015-03-03

    申请号:US13325086

    申请日:2011-12-14

    CPC分类号: C22C1/051 C22C29/10

    摘要: A TiC-based cermet body includes TiC and WC so that the atomic ratio Ti/W is between 2 to 5, and cobalt as the binder phase is present in an amount of between 5 to 25 vol %. Further, the cermet body has at least one element from group V of the periodic table, Mx, so that the atomic ratio Ti/Mx is between 4 to 20 and the atomic ratio W/Mx is between 1 to 6. The cermet body also has Cr in an amount such that the atomic Cr/Co ratio is from 0.025 to 0.14. The cermet body includes both undissolved TiC cores with a rim of (Ti,W,Mx)C alloy as well as (Ti,W,Mx)C grains which have been formed during sintering. A method of making a cermet body is also disclosed.

    摘要翻译: TiC基金属陶瓷体包括TiC和WC,原子比Ti / W为2〜5,作为粘结相的钴的存在量为5〜25体积%。 此外,金属陶瓷体具有至少一种来自元素周期表V的元素Mx,使得原子比Ti / Mx为4〜20,原子比W / Mx为1〜6。金属陶瓷体也 具有使原子Cr / Co比为0.025〜0.14的量的Cr。 金属陶瓷体包括具有(Ti,W,Mx)C合金边缘的未溶解的TiC芯以及在烧结期间形成的(Ti,W,Mx)C晶粒。 还公开了制造金属陶瓷体的方法。

    Metal nanodisks using bicellar templates
    76.
    发明授权
    Metal nanodisks using bicellar templates 有权
    金属纳米盘使用双相模板

    公开(公告)号:US08597396B1

    公开(公告)日:2013-12-03

    申请号:US12185153

    申请日:2008-08-04

    IPC分类号: B22F1/00 B22F1/02 C22C1/05

    摘要: Metallic nanodisks and a method of making them. The metallic nanodisks are wheel-shaped structures that that provide large surface areas for catalytic applications. The metallic nanodisks are grown within bicelles (disk-like micelles) that template the growth of the metal in the form of approximately circular dendritic sheets. The zero-valent metal forming the nanodisks is formed by reduction of a metal ion using a suitable electron donor species.

    摘要翻译: 金属纳米线及其制造方法。 金属纳米盘是轮形结构,其为催化应用提供大的表面积。 金属纳米盘生长在双晶片(盘状胶束)中,其以大致圆形的树状片的形式模拟金属的生长。 形成纳米盘的零价金属是通过使用合适的电子给体物质还原金属离子形成的。

    METHOD FOR ENHANCING STRENGTH AND HARDNESS OF POWDER METALLURGY STAINLESS STEEL
    78.
    发明申请
    METHOD FOR ENHANCING STRENGTH AND HARDNESS OF POWDER METALLURGY STAINLESS STEEL 审中-公开
    提高粉末冶金不锈钢强度和硬度的方法

    公开(公告)号:US20120251377A1

    公开(公告)日:2012-10-04

    申请号:US13074652

    申请日:2011-03-29

    IPC分类号: C22C1/05

    摘要: A method for enhancing strength and hardness of powder metallurgy stainless steels comprises steps of fabricating a stainless steel powder into a green compact; placing the green compact in a reducing environment and maintaining the green compact at a sintering temperature to form a sintered body; and placing the sintered body in a carbon-bearing atmosphere and maintaining the sintered body at a carburizing temperature below 600° C. to implant carbon atoms into the sintered body and form carburized regions in the sintered body. Thereby, the strength and hardness of powder metallurgy stainless steels can be improved. As the carburizing temperature is lower than 600° C., chromium would not react with carbon. Therefore, the strength and hardness of powder metallurgy stainless steels can be enhanced and the superior corrosion resistance is still preserved.

    摘要翻译: 一种提高粉末冶金不锈钢的强度和硬度的方法包括将不锈钢粉末制成生坯的步骤; 将生坯压坯放置在还原环境中并在烧结温度下保持生坯成型以形成烧结体; 将烧结体置于含碳气氛中,将烧结体保持在600℃以下的渗碳温度,将碳原子注入到烧结体中,在烧结体中形成渗碳区域。 因此,可以提高粉末冶金不锈钢的强度和硬度。 渗碳温度低于600℃时,铬不会与碳反应。 因此,可以提高粉末冶金不锈钢的强度和硬度,并且仍然保持优异的耐腐蚀性。

    High energy treatment of cutter substrates having a wear resistant layer
    79.
    发明授权
    High energy treatment of cutter substrates having a wear resistant layer 有权
    具有耐磨层的切割器基板的高能处理

    公开(公告)号:US08252226B2

    公开(公告)日:2012-08-28

    申请号:US12555947

    申请日:2009-09-09

    摘要: A high-energy treated cutter comprising a substrate having a top surface, an outer region, and an inner core and a wear resistant layer coupled to the top surface. The high-energy treatment alters the substrate's physical properties so that the inner core provides greater toughness and the outer region provides greater hardness, and greater abrasion resistance. The layer is protected prior to commencement of the treatment. In one embodiment, a cover is positioned to surround the layer and then the cutter undergoes treatment, wherein the cutter is subjected to impact forces with other cutters. In another embodiment, the cutter is positioned within a recess formed in a tray table, thereby providing protection to the layer. The cutter is secured in place via vacuum, glue, or weight. A spray nozzle applies shot material directed to the substrate of the cutter, thereby applying the impact forces to alter the substrate's properties.

    摘要翻译: 一种高能量处理的切割器,包括具有顶表面,外部区域和内部芯部的基底以及耦合到顶部表面的耐磨层。 高能量处理改变了基材的物理性能,使得内核提供更大的韧性,外部区域提供更大的硬度和更高的耐磨性。 该层在开始治疗前被保护。 在一个实施例中,盖被定位成围绕层,然后切割器进行处理,其中切割器与其它切割器受到冲击力。 在另一个实施例中,切割器定位在形成在托盘台中的凹槽内,从而为该层提供保护。 切割器通过真空,胶水或重量固定在适当位置。 喷嘴将喷射材料施加到切割器的基板上,从而施加冲击力以改变基板的性能。

    Cemented tungsten carbide rock bit cone
    80.
    发明授权
    Cemented tungsten carbide rock bit cone 有权
    水泥碳化钨岩石钻头

    公开(公告)号:US08043555B2

    公开(公告)日:2011-10-25

    申请号:US12632371

    申请日:2009-12-07

    IPC分类号: C22C1/05 C22C29/00

    CPC分类号: E21B10/50 E21B10/46

    摘要: An earth-boring bit has a steel body and bearing pin for rotatably supporting a cone. The cone has an exterior surface containing rows of cutting elements. The cone and cutting elements are formed of cemented tungsten carbide. The cone may be manufactured by applying pressure to a mixture of hard particles and metal alloy powder to form a billet, then machining the billet to a desired over-sized conical shaped product. Then the conical-shaped product is liquid-phase sintered to a desired density, which causes shrinking to the desired final shape.

    摘要翻译: 钻头具有用于可旋转地支撑锥体的钢体和轴承销。 锥体具有包含一排切割元件的外表面。 锥形和切割元件由粘结碳化钨形成。 可以通过向硬颗粒和金属合金粉末的混合物施加压力以形成坯料,然后将坯料机加工成期望的大尺寸锥形产品来制造锥体。 然后,圆锥形产品被液相烧结至所需的密度,这导致收缩到期望的最终形状。