Prodn. of a mould for powdered ceramic or metallic materials

    公开(公告)号:DE4340001A1

    公开(公告)日:1995-06-01

    申请号:DE4340001

    申请日:1993-11-24

    Inventor: FRIED REINHARD

    Abstract: A mould is mfd. by the following process: a) mixing of a dross; b) incorporation of an organic binder in said dross; c) immersion of a wax model in the resulting applicable substance; d) deposition of solid particles from the applicable substance in layers onto the wax model; e) removal of the coated wax model from the applicable substance; f) repetition of steps c), d) and e) until a multi-layer coating of the required thickness is achieved; g) drying of the coated wax model; h) removal of the wax model from the multi-layer, unfinished mould by melting; and i) sintering the unfinished mould to give the finished product. Also claimed is a mould mfd. by the claimed process.

    METHOD OF APPLYING A METALLIC ADHESIVE LAYER ONTO METAL STRUCTURAL MEMBERS AS A SUBSTRATE FOR A HOT-SPRAYED CERAMIC THERMALY INSULATING LAYERS AND METALLIC ADHESIVE LAYER AS SUCH

    公开(公告)号:PL182552B1

    公开(公告)日:2002-01-31

    申请号:PL34435196

    申请日:1996-12-02

    Inventor: FRIED REINHARD

    Abstract: A method of applying a metallic bonding layer for thermally sprayed ceramic heat insulating layers (6) on metallic components involves (a) applying a binder onto the degreased and oxide-free metallic surface of the substrate material (2); (b) applying metallic bonding powder (4) uniformly onto the binder; (c) applying solder powder (5), of smaller particle size than the bonding powder (4), uniformly onto the binder; and (d) drying the binder and heat treating to effect soldering. In an alternative method, an oxidation and corrosion resistant layer is produced on the cleaned metallic surface by gas-shielded plasma spraying prior to step (a), the bonding powder is a coarse powder having the same composition as this oxidation and corrosion resistant layer, step (c) is omitted and step (d) comprises drying the binder and then heat treating (solution annealing) to form a sintered bond between the metallic component and the oxidation and corrosion resistant layer and between the oxidation and corrosion resistant layer and the bonding powder. Also claimed are metallic bonding layers produced by the above methods.

    Method for the production of a moulding from a powder material

    公开(公告)号:DE4322085A1

    公开(公告)日:1995-01-12

    申请号:DE4322085

    申请日:1993-07-02

    Inventor: FRIED REINHARD

    Abstract: This method for the production of a moulding from a powder material comprises the following steps: a) introduction of the powder material into a rough mould, b) compaction of the material by mechanical tapping, c) presintering of the blank in the rough mould, d) removal of the blank from the rough mould, e) machining of the blank and f) shot-blasting of the blank g) final sintering of the blank to give the definitive moulding. With this method for the production of a moulding from a powder material, the energy consumption for the sintering process can be kept at an advantageously low level while maintaining the same quality of surface finish of the moulding.

    Method for the production of a moulding from a powder material

    公开(公告)号:DE4322083A1

    公开(公告)日:1995-01-12

    申请号:DE4322083

    申请日:1993-07-02

    Abstract: This method for the production of a moulding from a powder material comprises the following steps: a) introduction of the powder material into a rough mould, b) compaction of the material by mechanical tapping, c) presintering of the blank in the rough mould, d) removal of the blank from the rough mould, e) machining of the blank and f) final sintering of the blank to give the definitive moulding. The fully sintered moulding no longer requires to be finished. In this method, the effect of shrinkage during final sintering is kept small and this is advantageous.

    18.
    发明专利
    未知

    公开(公告)号:DE19709607A1

    公开(公告)日:1998-09-10

    申请号:DE19709607

    申请日:1997-03-08

    Abstract: The guide blade has a cavity (18) under low pressure, e.g. connected directly to the condenser, inside it, and has an aperture (3) for fluid suction in the region of its rear edge. This aperture has a porous cover (7) with capillaries which are filled with the fluid being sucked during operation. The porous cover is anchored in the blade by a mechanical fixing element (20) in the form of a spring-loaded quick lock. It consists of a bush (21) which locates the cover in the blade aperture. The cylindrical part (24) projects into the blade cavity. A movable mandrel (25) in the bush is loaded by a spring (26) and has a cap (28) on the inner wall of the blade.

    PROCESS FOR APPLYING A METALLIC ADHESION LAYER FOR CERAMIC THERMAL BARRIER COATINGS TO METALLIC COMPONENTS

    公开(公告)号:CA2188614A1

    公开(公告)日:1997-06-03

    申请号:CA2188614

    申请日:1996-10-23

    Inventor: FRIED REINHARD

    Abstract: In a process for applying a metallic adhesion layer for thermally sprayed ceramic thermal barrier coatings (6) to metallic components (1), the surface which is to be coated being cleaned in a first process step, so that the metallic surface is free of grease and oxide, a binder (3) is applied to the metallic surface of the base material (2) in a second process step. Metallic adhesive powder (4) is applied uniformly to the binder (3) in a third process step and solder powder (5), which has a smaller particle size than the adhesive powder (4), is applied uniformly to the binder (3) in a fourth process step. After drying the binder (3), a heat treatment is carried out for the purpose of soldering. The adhesion layers produced in this way are rough and provide a considerable positive lock for the ceramic thermal barrier coatings (6) which are to be sprayed thereon.

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