中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.008 seconds)

    MANUFACTURING OF SINTERED CERAMIC MOULDED BODIES
    2.
    发明申请
    MANUFACTURING OF SINTERED CERAMIC MOULDED BODIES 审中-公开
    烧结陶瓷成型体的制造

    公开(公告)号：WO1985000130A1

    公开(公告)日：1985-01-17

    申请号：PCT/EP1984000187

    申请日：1984-06-22

    Applicant: RIESER, Udo

    IPC: B24D16/00

    CPC classification number: B24D18/00 ,  B22F3/222 ,  B28B1/007

    Abstract: For manufacturing sintered ceramic moulded bodies and particularly moulded bodies of abrasive material including an abrasive material with relatively coarse grains such as corundum or carborundum, an aqueous mixture of raw material in question is cast into a mould for example of rubber, and withdrawn from the mould. The cooled moulded mixture is subjected to a freeze-drying process before it is fired. A particularly convenient mixture for a moulded body of abrasive material is a mixture comprised of (with respect to the dry mixture) about 70% by weight of refined corundum of which the grain size varies between 50 and 280 mesh, and of a base substance consisting substantially of pulverulent alpha-aluminium oxide with addition of potash feldspar, zirconium silicate and dextrine, and having a sintering temperature of 1770oC (2043oK).

    PROCESS OF PREPARING SINTERED SHAPES CONTAINING REINFORCEMENT
    3.
    发明申请
    PROCESS OF PREPARING SINTERED SHAPES CONTAINING REINFORCEMENT 审中-公开
    制备加固的烧结形状的工艺

    公开(公告)号：WO1989004735A1

    公开(公告)日：1989-06-01

    申请号：PCT/US1988004691

    申请日：1988-11-23

    Applicant: CERAMICS PROCESS SYSTEMS CORPORATION

    Inventor： CERAMICS PROCESS SYSTEMS CORPORATION ,  WEI, Wen-Cheng ,  NOVICH, Bruce, E.

    IPC: B22F03/16

    CPC classification number: B22F3/225 ,  B22F3/222 ,  B22F2998/00 ,  C04B35/632 ,  C04B35/80 ,  C22C47/14

    Abstract: Dense, flaw-free, complex shaped, three-dimensional, reinforced inorganic articles are formed by a process including the steps of providing a low viscosity suspension of solids, generally either ceramic or metallic, present at least at about 35 vol.%, reinforcement material having a high aspect ratio (e.g., fibers, whiskers, platelets), and dispersant, and shaping the suspension under low shear forces to produce a green article that can be pressureless sintered to net shape with minimal distortion. Shaping can be accomplished by casting or low pressure injection molding (less than about 100 psi) or by a freeze-forming and freeze-drying process. The low viscosity of the molding slurry and forming under low shear stress avoids reinforcement particle alignment. Accordingly, sintered articles exhibit a high tolerance to the originally molded shape and very little distortion during densification.

    Abstract translation: 通过包括以下步骤的方法形成密集，无瑕疵，复杂形状的三维增强无机制品，所述方法包括提供至少存在至少约35体积％的增强剂的通常为陶瓷或金属的固体的低粘度悬浮液 具有高纵横比的材料（例如，纤维，晶须，血小板）和分散剂，以及在低剪切力下成型悬浮液以产生可以以最小变形无压力地烧结成网状的绿色制品。 成型可以通过铸造或低压注射成型（小于约100psi）或通过冷冻干燥和冷冻干燥来实现。 成型浆料的低粘度和低剪切应力下的成形避免了增强粒子的对齐。 因此，烧结制品表现出对原始模制形状的高耐受性和致密化期间的非常小的变形。

    COMPLEX CERAMIC AND METALLIC SHAPES BY LOW PRESSURE FORMING AND SUBLIMATIVE DRYING
    4.
    发明申请
    COMPLEX CERAMIC AND METALLIC SHAPES BY LOW PRESSURE FORMING AND SUBLIMATIVE DRYING 审中-公开
    通过低压成型和次级干燥的复合陶瓷和金属形状

    公开(公告)号：WO1988007903A1

    公开(公告)日：1988-10-20

    申请号：PCT/US1988001259

    申请日：1988-04-11

    Applicant: CERAMIC SYSTEMS CORPORATION

    Inventor： CERAMIC SYSTEMS CORPORATION ,  SUNDBACK, Cathryn, A. ,  NOVICH, Bruce, E. ,  KARAS, Angelica, E.

    IPC: B22F03/22

    CPC classification number: B22F3/22 ,  B22F3/222 ,  B22F3/225 ,  B22F2998/00 ,  C04B35/622 ,  C04B35/632

    Abstract: A process for forming articles from inorganic sinterable particulates includes providing a well-dispersed, low pressure injectable slurry, freeze-forming the slurry into a desired geometry, and drying the piece so formed by a predominantly sublimative process, to produce a green article that can be conventionally sintered. The slurries preferably have a solids content of at least about 35 v/o, a viscosity of preferably not more than about 1000 cP at 100 s , and are preferably injectable at not more than about 1000 psi.

    Abstract translation: 从无机可烧结颗粒形成制品的方法包括提供良好分散的低压可注浆料，将浆料冻结成所需的几何形状，并通过主要升华的方法干燥形成的片材，以产生可以 通常烧结。 浆料优选具有至少约35v / o的固体含量，在100s -1下的粘度优选不大于约1000cP，并且优选在不超过约1000psi下注射。

    PROCESS FOR THE MANUFACTURE OF SINTERED PRODUCTS
    7.
    发明申请
    PROCESS FOR THE MANUFACTURE OF SINTERED PRODUCTS 审中-公开
    烧结产品的制造工艺

    公开(公告)号：WO2011141796A1

    公开(公告)日：2011-11-17

    申请号：PCT/IB2011/000990

    申请日：2011-05-10

    Applicant: K4SINT S.R.L. ,  CASARI, Francesco ,  GIRARDINI, Luca ,  ZADRA, Mario

    Inventor： CASARI, Francesco ,  GIRARDINI, Luca ,  ZADRA, Mario

    IPC: B22F3/22

    CPC classification number: B29C45/0001 ,  B22F3/02 ,  B22F3/222

    Abstract: The process for the manufacture of sintered products (5), comprising the steps of: mixing a sinterable powder material (1), a liquid carrier (2) and a gelling agent (3) to form a mix (4) for the manufacture of a sintered product (5), the gelling agent (3) having a gelling temperature below which the mix (4) is substantially rigid and a sol temperature above which the mix (4) is substantially fluid; introducing the mix (4) into a forming mould (6) having filtering means (7) suitable for being crossed at least by the liquid carrier (2) and trapping at least the sinterable powder material (1); applying a pressure in the forming mould (6) with the mix (4) which has a temperature substantially higher than the gelling temperature and is substantially fluid, applying a pressure being suitable for allowing the liquid carrier (2) to come out at least partially from the forming mould (6) through the filtering means (7); lowering the temperature of the mix (4) in the forming mould (6) below the gelling temperature to obtain a substantially rigid semi-finished product (8); sintering the semi-finished product (8) to obtain the sintered product (5).

    Abstract translation: 制造烧结产品（5）的方法，包括以下步骤：将可烧结粉末材料（1），液体载体（2）和胶凝剂（3）混合以形成混合物（4），以制备 烧结产物（5），胶凝剂（3）具有胶凝温度，低于该条件下，混合物（4）基本上是刚性的，溶胶温度高于其上，混合物（4）基本上是流体; 将混合物（4）引入到具有适于至少由液体载体（2）交叉并且至少捕获可烧结粉末材料（1）的过滤装置（7）的成型模具（6）中; 在所述成形模具（6）中施加压力，所述混合物（4）的温度基本上高于所述胶凝温度并且基本上是流体，施加适于允许所述液体载体（2）至少部分地出来的压力 从成形模具（6）通过过滤装置（7）; 将成型模具（6）中的混合物（4）的温度降低到凝胶化温度以下，以获得基本刚性的半成品（8）; 烧结半成品（8）以获得烧结产品（5）。

    COMPOSITE MONOLITHIC LAP AND A METHOD OF MAKING THE SAME
    9.
    发明申请
    COMPOSITE MONOLITHIC LAP AND A METHOD OF MAKING THE SAME 审中-公开
    复合单片玻璃及其制造方法

    公开(公告)号：WO1992010441A2

    公开(公告)日：1992-06-25

    申请号：PCT/US1991009136

    申请日：1991-12-04

    Applicant: UNITED TECHNOLOGIES CORPORATION

    Inventor： UNITED TECHNOLOGIES CORPORATION ,  HALPERT, Pinke ,  O'CONNELL, Thomas ,  PLATT, Royce

    IPC: C04B35/56

    CPC classification number: C04B41/5166 ,  B22F3/222 ,  B22F3/26 ,  B24D18/0027 ,  C04B35/565 ,  C04B41/478 ,  C04B41/5096

    Abstract: A composite yet monolithic abrasive material-removing lap includes a sintered porous matrix of ceramic or metal material and a quantity of an impregnating material substantially completely filling the pores of the sintered porous matrix preform at least throughout an effective region of the lap that is to come in contact with a workpiece to be acted upon by the lap. The lap is made by first slip-casting a preform, then freezing and freeze-drying the same, followed by lightly sintering the dry preform into a porous matrix preform, bringing the temperature of the preform to above the temperature at which the impregnating material is flowable, and filling the pores with the impregnating material.

    Abstract translation: 复合且整体式的研磨材料去除圈包括陶瓷或金属材料的烧结多孔基体和一定量的浸渍材料，至少在整个整个有效区域内基本上完全填充烧结的多孔基体预制件的孔 与由膝盖作用的工件接触。 该搭接是通过首先将预成型坯成型而制成的，然后冷冻并冷冻干燥，然后将干预型坯轻轻烧结成多孔基体预制件，使预成型件的温度高于浸渍材料的温度 可流动的，并用浸渍材料填充孔。

    MANUFACTURE OF MONOLITHIC, STIFF, LIGHTWEIGHT CERAMIC ARTICLES
    10.
    发明申请
    MANUFACTURE OF MONOLITHIC, STIFF, LIGHTWEIGHT CERAMIC ARTICLES 审中-公开
    单晶，STIFF，轻质陶瓷制品的制造

    公开(公告)号：WO1992005022A1

    公开(公告)日：1992-04-02

    申请号：PCT/US1990005278

    申请日：1990-09-17

    Applicant: UNITED TECHNOLOGIES CORPORATION

    Inventor： UNITED TECHNOLOGIES CORPORATION ,  VIVALDI, Alexander, M. ,  DUSTON, Christopher, J. ,  HALPERT, Pinke

    IPC: B28B07/34

    CPC classification number: C04B35/622 ,  B22F3/222 ,  B28B1/007 ,  B28B7/342 ,  C04B38/04 ,  C04B35/00 ,  C04B35/565 ,  C04B40/02

    Abstract: A light-weight yet sturdy ceramic article, is manufactured by initially forming at least one fugitive core (14) including a main portion (15) and at least one holding portion (16) projecting from the main portion and then positioning the fugitive core (14) in a mold cavity bounded by a multitude of bounding surfaces (11, 12) so that the holding portion (16) holds the main portion (15) at predetermined spacings from all of the bounding surfaces (11, 12). This is followed by filling the mold cavity around the fugitive core (14) with a dense slip constituted by ceramic or metal particles in mixture with a liquid medium to form a ceramic or metal preform (19) embedding the fugitive core (14) in its interior and freezing the ceramic or metal preform, then the fugitive core (14) is dissolved and escapes from the interior of the frozen ceramic or metal preform and finally the ceramic preform is converted into the ceramic article.

    Abstract translation: 通过初始形成至少一个包括主要部分（15）的至少一个短暂的芯体（14）和从主要部分突出的至少一个保持部分（16），然后将短暂的芯子（ 14）在由多个边界表面（11,12）限定的模具腔中，使得保持部分（16）将主要部分（15）保持在与所有边界表面（11,12）预定间隔。 随后，以与液体介质混合的陶瓷或金属颗粒构成的致密滑动物填充短纤芯（14）周围的模腔，以形成将其中的短暂核心（14）嵌入其中的陶瓷或金属预制件（19） 内部并冷冻陶瓷或金属预成型件，然后将短纤芯（14）溶解并从冷冻陶瓷或金属预制件的内部逸出，最后将陶瓷预制件转化成陶瓷制品。

Patent Agency Ranking