Abstract:
A method of applying a wear-resistant coating to aluminum sliding contact wear surfaces is disclosed. The method includes providing a plurality of parts having sliding contact wear surfaces and thermal spray coating at least one of a composite aluminum oxide and PTFE or a blend of aluminum oxide and PTFE. The disclosed method may be used to repair aluminum parts subject to sliding contact wear as well as in the design of new aluminum parts subject to sliding contact wear. Improved compressor bleed valves for gas turbine engines and improved fan exit case assemblies are also disclosed.
Abstract:
A process for applying an insulative coating to a mandrel can be used in an electromagnetic telemetry antenna assembly. One process includes applying a bond coat to at least a portion of an outer radial surface of a mandrel; applying an electrical isolation layer to the bond coat; applying a first sealant layer to the electrical isolation layer; and heat treating the mandrel in an oven.
Abstract:
In a method for a finishing work of a spray-coated surface, an inner surface of an cylindrical hollow member is roughened by forming helical groove thereon, a thermal spray coating is formed on the inner surface that is roughened, and a finishing work is carried out by cutting the thermal spray coating along a helix of the groove by use of a cutting tool. According to the method for a finishing work, a finishing work of a thermal spray coating that has hardness ununiformity can be carried out efficiently.
Abstract:
Die Erfindung betrifft eine Bearbeitungsvorrichtung zur Bearbeitung einer Werkstückoberfläche (10a; 10b), insbesondere zur Innenbeschichtung von Zylinderbohrungen (11a, 12a, 13a; 11 b, 12b, 13b), mit einer Abschirmeinheit (14a; 14b), die dazu vorgesehen ist, einen zur Bearbeitung vorgesehenen Teilbereich (15a; 15b) der Werkstückoberfläche (10a; 10b) und einen benachbart angeordneten Teilbereich (16a, 17a) der Werkstückoberfläche (10a; 10b) zumindest während eines Betriebs voneinander zu trennen, wobei die Abschirmeinheit (14a; 14b) wenigstens eine Absperrdüse (18a, 19a; 18b, 19b) aufweist, die dazu vorgesehen ist, eine Fluidströmung (20a, 21 a; 20b, 21 b) zur Trennung der zumindest zwei Teilbereiche (15a, 16a, 17a; 15b) zu erzeugen, sowie ein Verfahren zur Bearbeitung einer Werkstückoberfläche (10a; 10b).
Abstract:
An improved thermal spray apparatus (100) and method of promotes mixing of axially fed particles in a earner stream with a heated effluent stream without introducing significant turbulence into either the effluent or carrier streams. An axial injection port (114) includes a plurality of chevrons (120) at the distal end of the port. The chevrons (120) are located radially around the circumference of the distal end of the axial injection port to increase the shared area between the two flow streams at the outlet of the port.
Abstract:
A coherent material is formed on a substrate ( 10 ) by providing a precursor suspension ( 14 ) in which particulates are suspended in a carrier fluid, and directing the precursor suspension ( 14 ) at the substrate ( 10 ) from a first source ( 12 ). Generally contemporaneously with application of the deposited precursor suspension ( 14 ) to the surface, hot gases, e.g. hot gases produced by a flame ( 16 ), are directed at the substrate ( 10 ) from a remote second source ( 18 ) to fuse the particulates into the coherent material.
Abstract:
The invention concerns a process for coating an object with a layer of fluorine containing material at elevated temperature. The material applied for coating has a measurable vapour pressure at elevated temperature and contains organic fluorine.
Abstract:
Plasma spraying of particulate thermotropic liquid crystalline polymers onto the surfaces (14) of composite and metallic structures. The present plasma spray process employs a conventional direct current electric arc plasma spray gun (12) in which an inert plasma gas is introduced, caused to swirl, and discharges as a rotating plasma flame having an exceptionally high temperature, above about 14000 DEG K, into which the particulate liquid crystal polymer is discharged for melting and propulsion onto the target surface (14). The target surface (14) preferably is preheated, and the molten particles deposit and cool to form a build up of the desired thickness. Cooling is regulated by post-heating the deposit to a temperature between about 200 DEG F and 500 DEG F.
Abstract:
The invention relates to a coating material on a water basis containing molecules that have hydrophobic groups. The inventive material further comprises smaller, thermally unstable and/or volatile and/or organic molecules that interact with the hydrophobic molecules so as to bring about a stabilization in the aqueous phase.