Siemens Aktiengesellschaft

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Chromalloy Gas Turbine Corporation

Torsten Melzer-Jokisch

Georg Bostanjoglo

Rolf Wilkenhöner

Nikolai Arjakine

Michael Ott

Bernd Burbaum

Norbert Pirch

Andres Gasser

Dimitrios Thomaidis

Stefanie Linnenbrink

Torsten Jambor

Andreas Oppert

Francis-Jurjen Ladru

Andrea Massa

Selim Mokadem

Ralf Motzkus

A method is provided for treating turbine blades having holes for discharging cooling air. A protective layer is provided and then the holes that are partly or completely closed by the protective layer are opened again. Coordinates concerning the position of the holes are acquired before the protective layer is applied using a laser triangulation sensor using a light source generating a light beam and a light detector. The data obtained is used after application of the protective layer to control a removal device for removing protective layer partly or wholly covering the holes. Each hole is measured by the light beam being shone into the hole in different positions in relation to the longitudinal mid-axis of the latter. The light beam is shone into the respective hole in a plane at at least three different angles to the longitudinal mid-axis thereof.

Method for treating turbine blades and device therefor

A method of welding workpieces of high-temperature superalloys is provided. Welding filler is applied in a plurality of layers to a surface of the workpiece via a heat input zone and a supply zone for supplying the welding filler into the heat input zone. The heat input zone and the supply zone on the one hand and the workpiece surface on the other hand are moved in relation to one another. A polycrystalline weld seam is generated by remelting a previously applied layer of the plurality of layers. Welding parameters are chosen such that a cooling rate during a solidifying of the material is at least 8000 Kelvins per second. Further, a welding apparatus for carrying out such a method is provided.

Method and device for welding workpieces made of high-temperature resistant super alloys

A welding method for welding workpieces made of highly heat-resistant superalloys is provided. The method includes generating a heat input zone on the workpiece surface by means of a heat source, feeding welding filler material into the heat input zone by means of a feeding device, and generating a relative motion between the heat source and the feeding device on one hand and the workpiece surface on the other hand by means of a conveying device. Furthermore, according to the welding method, the mass feed rate is &#x2266;350 mg/min.

Method for welding workpieces made of highly heat-resistant superalloys, including a particular mass feed rate of the welding filler material

A method and system for automated repair of a machine component is provided. According to the proposed method, a first geometry of the component, including a damaged portion of the component, is digitalized. A trough is then machined over the damaged portion of the component. The machining is numerically controlled using digitalized geometrical data of the first geometry of the component. A second geometry of the component is then digitalized subsequent to the machining, the second geometry including the trough. Subsequently, a material is deposited over the trough. The deposition of the material is numerically controlled digitalized geometrical data of the second geometry of the component.

Automated repair method and system

During the coating of a component including cooling-air holes, it is necessary, when remachining the coated cooling-air holes, to determine the correct alignment of the cooling-air row. A process is provided in that at least two cooling-air holes are kept clear by a masking material during the coating and the alignment of the cooling-air row is effected on the basis of these two unclosed cooling-air hole.

Process for coating a component having partially closed holes and process for opening the holes

A process for welding a component in which a recess is filled by welding tracks is provided. The process includes providing a recess with a contour which delimits an outer upper surface of the component with respect to the recess. The welding tracks are laid such that the welding tracks also reach the surface outside a contour of the recess and that a plurality of welding layers are used in order to fill the recess until a last layer protrudes completely beyond the surface.

Welding method and component

A process for determining the position of closed holes in a component is provided. By carrying out laser triangulation measurements on an uncoated component and a coated component with holes, the exact position of the holes to be reopened may be detected following the coating. A device used to carry out this process is also provided.

Surface analysis for detecting closed holes, and device

A welding apparatus for welding workpieces of high-temperature superalloys is provided. The welding apparatus includes a heat source for producing a heat input zone on the workpiece surface, a supplying device for supplying welding filler into the heat input zone and a transporting device for producing a relative movement between the heat source and the supplying device on the one hand and the workpiece surface on the other hand. The welding apparatus further includes a control unit with a control program, which carries out the relative movement in such a way that the welding power and the diameter of the heat input zone are set such that the cooling rate during the solidifying of the material is at least 8000 Kelvins per second.

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Berlin, Germany

Torsten Melzer-Jokisch