Abstract:
A foam for use in a lost-foam casting process utilized in the manufacture of a component for a gas turbine engine, the foam having a void fraction less than or equal to ninety five percent, is disclosed. The foam may include a first layer comprising polymer foam having an open-cell structure and a void fraction greater than ninety five percent. A second layer, comprising adhesive, may be adhered to the first layer. A third layer comprising particulate material may be adhered to the second layer.
Abstract:
A foam for use in a lost-foam casting process utilized in the manufacture of a component for a gas turbine engine, the foam having a void fraction less than or equal to ninety five percent, is disclosed. The foam may include a first layer comprising polymer foam having an open-cell structure and a void fraction greater than ninety five percent. A second layer, comprising adhesive, may be adhered to the first layer. A third layer comprising particulate material may be adhered to the second layer.
Abstract:
The invention relates to a method for coating a surface of an electrically non-conductive substrate with powder coatings, comprising the following steps: providing a substrate to be coated, pre-heating the substrate to be coated to 40 to 140 °C in order to decrease the surface resistance of the substrate to less than 10 12 ohms, preferably to within the range of 10 10 to less than 10 12 ohms, electrostatically coating the surface with powder coating in a single layer, which powder coating comprises a reactive system, which in particular cures into a thermoset, curing the powder coating layer at 170 °C or less.
Abstract:
Es wird ein Wischerblatt für einen Scheibenwischer, insbesondere für einen Scheibenwischer eines Kraftfahrzeuges, vorgeschlagen, das einen Wischgummi mit einer Wischgummilippe (2) aufweist. Um einen niedrigen Trockenreibwert zu erreichen, ist die Wischgummilippe (2) teilweise aus Polyethylen gefertigt (Figur 1).
Abstract:
A process for forming a coating on a substrate, including the steps of effecting tribostatic charging of a body of powder by establishing a fluidised-bed of the body of powder in a fluidising chamber at least a part of which is conductive, applying a voltage to the conductive part of the fluidising chamber, immersing a substrate which is electrically non-conductive or poorly conductive, either electrically isolated or earthed, wholly or partly in the fluidised bed, withdrawing the substrate from the fluidised-bed and forming adherent particles of the powder into a continuous coating over at least part of the substrate.
Abstract:
The invention concerns a method for covering an object with a film obtained by melting a thin layer of powder, which consists in: (a) providing an electrostatic fluidised bed of powder in a vat, said powder being essentially charged with a triboelectric charging device, other than the vat walls, located in the vat and/or outside the vat; (b) soaking in the vat the object connected to a zero potential or sufficient for covering it with powder; (c) then placing the powder coated object in an oven at a sufficient temperature until the coating film is obtained by the melting of the powder. The triboelectric charging device is for example a honey comb weave vertically arranged at the bottom of the vat.
Abstract:
Solders, fluxing agents or binders are applied at a high speed on surfaces to be subjected to brazing, especially on the surfaces of extruded components (10) produced from aluminum and its alloys. Heat is used to melt these agents. According to a known method, solders and fluxing agents are applied in pulverized form while binders are applied in liquid or pasty form. The aim of the invention is to reduce the amount of binders and especially to obtain a uniform coating of the substrate. To this end, in addition to the pulverized solders and fluxing agents, the binder, too, is applied in pulverized form.