Siemens Aktiengesellschaft

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

Diffusion Alloys Limited

Rolf Wilkenhöner

Georg Bostanjoglo

Nikolai Arjakine

Michael Ott

Bernd Burbaum

Norbert Pirch

Andres Gasser

Nigel-Philip Cox

Torsten Melzer-Jokisch

Stefanie Linnenbrink

Matthias Jungbluth

Torsten Jambor

Ralph Reiche

Matthias Babey

Gerhard Graumüller

Reinhard Krannig

Carsten Köppen

Volker Tränkle

Gunther Wendt

Thomas Beck

Norbert Czech

Selim Mokadem

Andrea Massa

Andre Jeutter

Adrian Kempster

Adrian Wollnik

Jan Steinbach

Dimitrios Thomaidis

Torsten Jokisch

Sascha Martin Kyeck

Gerhard Reich

Tobias Brett

Mario Felkel

Andreas Oppert

Bahadir Basdere

Diana Felkel

Andy Borchardt

Martin Grohnert

Introducing a through hole into a substrate () before coating, and performing the removal thereafter, shortens the machining times for producing a through hole () with a diffuser () and also subjects the intermediate layers to less stress.

Method for the new production of through holes in a layer system

A shipment packaging for elongate components is provided. Turbine blades must be sent from remote locations of the world to another location. During shipment, the coating of the turbine blades must be protected. The turbine blades are fixed at both ends by means of shipment packaging so that the turbine blades are protected.

Flexible shipment packaging

A process for welding directionally solidified metallic materials is presented. Process parameters are targeted selected with respect to laser welding, advancement, laser power beam diameter and powder mass flow. The temperature gradient, which is fundamentally decisive for the single-crystal growth during laser cladding, may be set in a targeted manner.

Single crystal welding of directionally compacted materials

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 process for reopening cooling-air holes by a laser in order to remove coat down is provided. A nanosecond laser is provided and used for reopening the holes, wherein pulse times between 1 &#x3bc;s and 20 &#x3bc;s and a pulse frequency between 20 kHz and 40 kHz provided by the nanosecond laser are used.

Reopening of cooling-air bores using a nanosecond laser in the microsecond range

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

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 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.

Method and apparatus for welding workpieces of high-temperature superalloys

A method for determining and evaluating eddy-current displays, in particular cracks, in a test object made from an electrically conductive material is provided. The method uses the following steps, applying an alternating electromagnetic field of a predetermined constant or variable frequency to the test object, detecting the eddy currents induced in the test object along predetermined parallel measuring tracks, providing eddy-current signals each eddy-current signal is assigned to a measuring track, conditioning the eddy-current signals and providing conditioned measured variables, interpreting the conditioned measured variables using a predetermined evaluation algorithm, and providing synthetic crack signals.

Method for determining and evaluating eddy-current displays, in particular cracks, in a test object made from an electrically conductive material

The invention relates to a weld filler and to a use of a weld filler which significantly improves the weldability of some nickel-based superalloys and includes the following constituents (in wt %): 17.5%-20.0% chromium (Cr) 10.0%-12.0% cobalt (Co) 9.0%-10.5% molybdenum (Mo) 0.1%-3.3% titanium, in particular 3.0%-3.3% titanium (Ti), 1.4%-1.8% aluminum (Al), 0.04%-0.12% carbon, 0.003%-0.01% boron (B), remainder nickel.

Weld filler, use of the weld filler and welding process

Process and apparatus for producing a turbine component, turbine component and use of the apparatus Turbine components have to withstand high thermal and mechanical loads. It therefore proves advantageous for them to be made from a material with a preferred crystal orientation. Hitherto, the turbine components with a preferred crystal orientation have been produced as a single piece, with relatively high scrap rates. The proposed concept makes it possible to produce a preferred turbine component () in a particularly simple way by assembling a turbine component () at least from a first base part () and a build-up material (), the subregion () of the joining zone having a preferred crystal orientation (), so that disadvantageous properties of a joining zone without a preferred crystal orientation () which have hitherto been encountered are avoided.

Process and apparatus for producing a turbine component, turbine component and use of the apparatus

A method of repairing a crack in a component comprising a base material, in particular in a gas turbine blade, a suspension, which comprises a carrier liquid and at least one solid in the form of nanoparticles of the same material as the base material, being applied to the location to be repaired. A heat treatment of the component is carried out, the solid in the form of nanoparticles being melted and a bond with the base material being formed. During the heat treatment, the component is exposed to a thermal shock, in which a maximum temperature which corresponds to the melting temperature of the nanoparticles is reached. The nano size of the particles in the suspension causes a lowering of the melting point of these particles to take place, so that the structure of the base material does not change even at the melting temperature of the nanoparticles.

Method of repairing a crack in a turbine component

Growing community of inventors

Kleinmachnow, Germany

Rolf Wilkenhöner