中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

466 records (took 0.023 seconds)

    COMPOSITE MATERIAL
    134.
    发明公开
    COMPOSITE MATERIAL 有权
    的复合材料的制造方法

    公开(公告)号：EP1581662A1

    公开(公告)日：2005-10-05

    申请号：EP03769718.2

    申请日：2003-10-29

    Applicant: ELEMENT SIX (PTY) LTD

    Inventor： SIGALAS, Iakovos ,  DAVIES, Geoffrey, John ,  MASETE, Mosimanegape, Stephen,190 Leopard Rock ,  CHAPMAN, Raymond, Albert

    IPC: C22C26/00 ,  B22F7/06 ,  B01J3/06 ,  B24D3/06 ,  E21B10/56

    CPC classification number: E21B10/567 ,  B01J3/062 ,  B01J3/065 ,  B01J2203/063 ,  B01J2203/066

    Abstract: A composite material comprises a plurality of cores of material selected from the group comprising carbides, nitrides, carbonitrides, cemented carbides, cemented nitrides, cemented carbonitrides and mixtures thereof, dispersed in a matrix. The matrix comprises the components for making an ultra-hard material, such as diamond or cBN abrasive particles, and a suitable binder. The ultra-hard material is polycrystalline in nature and is typically PCD or PcBN. The cores are typically provided as individual particles or in the form of granules. The granules may be further coated with a second coating, which may be a similar material to that of the cores or of an ultra-hard material of a different grade to that of the first coating. The composite material typically takes on a honeycomb structure of a hard material and cores within the pores of the honeycomb structure bonded to the honeycomb structure. The pores of the honeycomb structure may be ordered or random. A method of producing the composite material and a method of producing a tool component incorporating such a material are also provided.

    Supported polycrystalline compacts and method of manufacture
    137.
    发明公开
    Supported polycrystalline compacts and method of manufacture 失效
    关于多晶压块和方法的基础及其制备布置。

    公开(公告)号：EP0680781A2

    公开(公告)日：1995-11-08

    申请号：EP95302870.1

    申请日：1995-04-27

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Cerutti, David Bruce ,  Marek, Henry Samuel

    IPC: B01J3/06

    CPC classification number: B01J3/062 ,  B01J3/065 ,  B01J2203/062 ,  B01J2203/0635 ,  B01J2203/0645 ,  B01J2203/0655 ,  B01J2203/066 ,  B01J2203/0685 ,  Y10T428/12056 ,  Y10T428/26 ,  Y10T428/30 ,  Y10T428/31678

    Abstract: Supported polycrystalline compacts having improved shear strength, impact, and fracture toughness properties, and methods for making the same under high temperature/high pressure (HT/HP) processing conditions. The method involves a HT/HP apparatus formed of a generally cylindrical reaction cell assembly having an inner chamber of predefined axial and radial extents and containing pressure transmitting medium, and a charge assembly having axial and radial surfaces and formed of at least one sub-assembly comprising a mass of crystalline particles adjacent a metal carbide support layer. The charge assembly is disposed within the chamber of the reaction cell assembly, with the pressure transmitting medium being interposed between the axial and radial surfaces of the charge assembly and the extents of the reaction cell chamber to define an axial pressure transmitting medium thickness, L h , and a radial pressure transmitting medium thickness, L r , the ratio of which, L h /L r being selected as less than 1. The reaction cell assembly (100) containing the charge assembly then is subjected to HT/HP conditions selected as effective to sinter the crystalline particles into a polycrystalline compact layer and to bond the polycrystalline compact layer at an interface to the metal carbide support layer for forming a metal carbide supported polycrystalline compact. The supported compact is characterized as having an essentially constant or increasing residual compressive stress on the surface of its compact layer as portions of a predefined thickness, W, of its support layer, as measured from the interfaced, are incrementally removed.

    Abstract translation: 支承的多晶压块具有改进的剪切强度，冲击，和断裂韧性的特性，以及用于制造高温/高压（HT / HP）的处理条件下的相同方法。 该方法包括形成一个基因反弹圆柱形反应池在预定轴向和径向范围的内部腔室组件，其具有与含有压力传输介质中的HT / HP装置，以及组件，其具有轴向和径向表面的电荷和形成的至少一个子组件的 包含结晶颗粒相邻的金属碳化物支承层的质量。 充电组件被反应池组件的腔室内设置，与所述压力传递介质介于所述充电组件的轴向和径向表面和反应池室的边界之间在轴向压力传递介质的厚度，Lh的定义， 和径向压力传递介质的厚度，LR，其中的比率，LH / LR被选定为小于1的反应室组件含有电荷组件然后进行HT / HP选择条件有效地使结晶颗粒烧结成 多晶致密层和粘结多晶致密层在接口到金属碳化物支承层用于形成金属碳化物支承的多晶形体。 带支承压块的特征是当从接口，递增地去除测量具有基本恒定或为一个预定义的厚度，W，它的支持体层的部分其致密层的表面上增加残余压缩应力。

    ELECTRIC PULSED POWER VACUUM PRESS
    138.
    发明公开
    ELECTRIC PULSED POWER VACUUM PRESS 失效
    带脉冲电源电真空PRESS。

    公开(公告)号：EP0575335A1

    公开(公告)日：1993-12-29

    申请号：EP92902656.0

    申请日：1991-12-02

    Applicant: MATTHEWS, M., Dean

    Inventor： MATTHEWS, M., Dean

    IPC: B01J3 ,  B30B11 ,  B30B12

    CPC classification number: C04B35/52 ,  B01J3/006 ,  B01J3/065 ,  B30B11/004 ,  B30B11/027 ,  B30B15/34 ,  C04B2235/422 ,  C04B2235/425 ,  C04B2235/427 ,  C04B2235/6581 ,  C04B2235/666

    Abstract: L'invention se rapporte à un ensemble presse à vide à courant électrique pulsé (10), qui fournit des impulsions électriques de courte durée et de puissance élevée à un échantillon sélectionné (11), lequel est simultanément soumis à une compression mécanique. Une presse hydraulique (14) applique une force compressive mécanique à un élément de presse rapporté (12) contenant l'échantillon (11). Le courant électrique pulsé est fourni par une unité d'alimentation (16) et le vide est produit par une unité (18) prévue à cet effet. Le courant électrique pulsé est appliqué à travers l'échantillon (11) le long d'une voie électrique (49) se caractérisant par une inductance et une résistance très basses. La voie électrique préférée (49) utilise exclusivement des parties conductrices à plaques parallèles et des parties de lignes coaxiales. L'ensemble (10) est destiné à fournir des températures très élevées de courte durée et est conçu notamment pour la production de diamant synthétique.

Patent Agency Ranking