Abstract: A method for cleaning, method and device for the application of a protective medium to a turbine blade, and a method for placing cooling bores in a turbine blade is disclosed. For this purpose, hot supercritical carbon dioxide is used as a tempering and/or cleaning medium and compressed and decompressed one or more successive times. The cleaning medium is decompressed to a pressure at which the gas assumes a volume that is a multiple of the volume of the compressed cleaning medium in the pressure tank. In so doing, it is possible to remove particulate and other impurities, even from recesses, blind holes, or open hollow spaces.

Abstract: A method and apparatus for the fabrication and/or repair of an integrally bladed rotor, specifically of an integrally bladed gas turbine rotor, is disclosed. At least one rotor blade is joined to a main rotor body for fabrication and/or repair. The joining is carried out by diffusion welding.

Abstract: A method for electrochemically stripping components, especially gas turbine components, is provided. According to the method, the component from which a coating is to be removed is connected to a positive terminal of a voltage source or current source while an electrode is connected to a negative terminal thereof. An electrode is used that is precisely adapted to a region of the component to be stripped such that a gap between the region of the component to be stripped and the electrode is approximately constant over the entire region to be stripped.

Abstract: A rotor for a turbo engine is disclosed including a rotor base body and a plurality of rotor blades distributed over the circumference of the rotor base body. The rotor base body is formed by at least one ring-shaped element made of a metal matrix composite material. The rotor blades are attached by footing to the rotor base body in such a way that the footing is positioned in a fiber-free area of the rotor base body.

Abstract: A manufacturing plant, in particular, a rotational friction welding plant for the joining of two components, with two part systems for mutual alignment is disclosed. According to the invention, at least one of both part systems for mutual alignment is provided with an adjustment device, comprising two interleaved frames, whereby two groups, each with at least three adjustment devices, are arranged between the two frames of the adjustment device at an axial separation from each other.

Abstract: The invention relates to a method and an apparatus for the surface blasting, especially for the ultrasonic shot peening, of gas turbine blades in the area of their blade roots. The apparatus encompasses at least one vibrator, especially at least one ultrasonic sonotrode (12), comprising an oscillating surface (13), whereby the or each vibrator is oriented in such a manner so that the oscillating surface (13) of the or each vibrator extends essentially in the horizontal direction, whereby a processing chamber (14), for receiving the or each blade root (15) to be processed, adjoins the or each oscillating surface (13).

Abstract: Pulsed laser drilling is used to produce bore holes having a small diameter, for example, in hollow workpieces. Turbine blades, e.g., have a multitude of fine cooling air bore holes, which are able to be produced by this method, e.g., with high positional accuracy and in an automated manner. A checking method is provided by which drilling faults, e.g., with regard to piercing and bore-hole geometry, may be detected in a more reliable manner. A method is for checking a bore hole introduced in a workpiece by laser pulses, in which characteristic signals from the area of the bore hole are received with the aid of a sensor and compared to setpoint values and only signals received in a characteristic time interval following a laser pulse are taken into account.

Abstract: A wear protection coating, in particular an erosion protection coating for gas turbine components is disclosed. The wear protection coating is applied to a to-be-protected surface of a flow mechanically stressed component. The wear protection coating has an at least double-layer structure, where a first layer is applied to the to-be-protected surface of the component and has a material composition that is adapted to the material composition of the component and where a second layer forms an outer cover coat.

Abstract: A rotary friction welding system is provided comprising a first rotary spindle (14) and a second dead spindle (15), wherein the first spindle (14) carries a first mutually connectable component (11) and the second spindle (15) carries a second mutually connectable component (12). The rotary friction welding system also comprises a positioning device (25) for orienting the component (12) arranged on the second spindle (15) with respect to the component (11) arranged on the first rotary spindle (14) and a contact force device (26) for providing a spin welding with the required contact force. The positioning device (25) and contact force device (26) are coupled to each other in such a way that the component (12) arranged on the second spindle (15) is orientable with respect to the component (11) arranged on the first rotary spindle (14) before and/or during the spin welding process.

Abstract: A method is provided for purifying gases, particularly gases contaminated by environmentally harmful substances, by way of plasma discharge. The gas to be purified is guided through a thermal plasma, which is generated by electrodeless ignition of a process gas, so that, by way of the thermal plasma, the harmful substances contained in the gas to be purified are converted to environmentally neutral, fully oxidized substances.

Abstract: A process and a device for the pulsed plasma strengthening of a metallic component, in which the surface to be strengthened is not acted on in a merely punctiform manner and the roughness of the surfaces is not adversely effected, comprising the steps of: providing a metallic component (1, 8, 18), coating a surface section (7, 7?) of the metallic component (1, 8, 18) with a sublimable material (22), applying a pulsed plasma jet (20) to the surface section (7, 7?) in such a way that the material is sublimed and as a result a shock wave is introduced into the component (1, 8, 18) in order to form residual compressive stresses in a region which extends from the surface section (7, 7?) into the component (1, 8, 18).

Abstract: A method and a device for manufacturing microstructured metal foils for heat transfer reactors. The microstructures in the metal foils are produced using an ECM/PECM dipping process.

Abstract: A method for producing an erosion-resistant protective coating is disclosed. At least one lacquer material is provided wherein the lacquer material is a phosphate or silicate mixed with particles. Then, at least one layer of the lacquer material or each lacquer material is applied to a component that is to be protected from erosion. Then the applied lacquer layer or each applied lacquer layer is converted to a glass layer.

Abstract: A method and device for the production of components having a three-dimensionally formed surface by a lowering operation with an electrochemical ablation process, namely a Precise Electro Chemical Machining (PECM) process, is disclosed. The method includes the steps of: a) providing a specially pre-formed workpiece featuring a specific dimensional allowance; b) providing at least one working electrode, in which case the contour of the working electrode, or of each working electrode, is adapted to the contour of the three-dimensionally formed surface to be produced; and c) lowering the three-dimensionally formed surface by placing the pre-formed workpiece and the working electrode, or each working electrode, in an electrolyte and by applying an electrical voltage or an electrical current, in which case the working electrode, or each working electrode, is moved in the sense of a circular advance motion in the direction toward the workpiece.

Abstract: A friction-welding device for the integral joining of components, having an oscillator, which generates a periodic movement of a component and a welding surface provided thereon relative to another, static component and a welding surface provided thereon, with directions of movement parallel to the welding surfaces, having a compression device which presses the welding surfaces together, and a cartridge which accommodates the moved component. The oscillator includes two or a greater, even number of piezoactuators, which are arranged in pairs on a line of application and are able to be prestressed with respect to the cartridge from opposite sides under pressure generation and are able to be moved in a synchronous, oscillating manner together therewith and the component.

Abstract: A device for surface blasting, e.g., for ultrasonic shot blasting, components, e.g., gas turbine components, includes at least one vibrator having an oscillating surface, e.g., having at least one ultrasonic sonotrode, the or each oscillating surface of the or each vibrator being adjoined by a machining chamber for receiving a section to be blasted of the component to be machined. The machining chamber is bounded in its cross-section by at least three sides, e.g., by at least two substantially vertical sides and by at least one substantially horizontal side. At least the substantially vertical sides of the machining chamber are formed by oscillating surfaces of in each case one vibrator.

Abstract: A method for manufacturing integrally bladed rotors (preferably gas turbine rotors) is provided. The method includes the steps of a) providing a basic rotor body; b) placing the basic rotor body into an electrolyte; c) electrochemically machining the basic rotor body by simultaneously manufacturing a plurality of unmachined blades; and d) subsequently machining the unmachined blades to provide hydrodynamic surfaces, in particular a suction side and a pressure side, in the area of each unmachined blade.

Abstract: A method for machining workpieces provides a machining electrode, which is guided at a specific distance to the workpiece. An electrolyte is provided between the workpiece and the machining electrode, through which an operating current flows between the machining electrode and the workpiece. The operating current results from an operating voltage (UA), which is produced at the machining electrode, the workpiece being connected to ground. To perform the machining procedure, the distance between the machining electrode and the workpiece is regulated and the operating voltage (UA) is determined in such a way that the resulting operating current is a DC current or a pulsed DC current—i.e., the operating voltage is a DC voltage of fixed or specific dimension. A measuring voltage (UM) is superimposed on the operating voltage (UA) for producing the operating current.

Abstract: An electrode and method for the electrochemical machining of a workpiece is disclosed. The electrode is designed as a cathodically polarized tool electrode. It has a geometry that corresponds to the geometry to be removed from the workpiece, at least in a machining range, and perviousnesses in the electrode to allow an electrolyte to flow through and exit at the electrode surface, at least in the area of the machining range. The perviousnesses are formed by a porous design of the electrode and/or by artificially created openings in the electrode or the electrode surface. The porosity distribution and/or the number, arrangement and configuration of the openings is selected such that a uniform electrolyte flow and/or electrolyte exchange at the electrode surface is ensured at least in the machining range of the electrode.

Abstract: A device for electrochemical reduction of a workpiece (10) includes a workpiece (10), an electrode (20), and an electrolyte (30), which is located between electrode (20) and workpiece (10). The electrode (20) is moved close to the workpiece (10) with a small gap dimension (21), and a processing of the workpiece (10) occurs through a flow of current between electrode (20) and workpiece (10) through the electrolyte (30). In addition, a sonotrode is positioned to introduce sound waves.