Patent application number | Description | Published |
20080202650 | Heat Treatment Method For Monocrystalline or Directionally Solidified Structural Components - The invention relates to a heat treatment method for monocrystalline or directionally solidified structural components. Said method comprises a heat treatment which results in dissolving at least one crystalline phase of the material of the structural component, referred to in the following as component material. The inventive method is characterized by carrying out the heat treatment by heating the structural component to a dissolution temperature required for dissolving the crystalline phase only in at least one first component area in which the stresses within the component material do not exceed a predetermined value. In at least one second component area in which the stresses within the component material exceed the predetermined value the material is only heated to a temperature below the dissolution temperature. | 08-28-2008 |
20080229567 | Method for Repairing a Component of a Turbomachine - The invention relates to a method for repairing a damaged and/or aged component of a turbomachine, which is made at least in part of a ceramic composite material. The aim of the invention is to create a method which allows the downtime of the turbomachine caused by damaged components to be reduced while making it possible to repair damaged components. Said aim is achieved by a generic method for repairing a damaged component ( | 09-25-2008 |
20090107003 | Technology for Cleaning Thermal Fatigue Cracks in Nickel-Based Superalloys With a High Chromium Content - There is described a method for cleaning components that comprise cracks that are polluted with oxides, in particular gas turbine part. In said method, the components to be cleaned are exposed in a cleaning chamber at high temperature to a cleaning gas containing gaseous halogen compounds, which ionize to form halide ions. A cleaning gas is used containing 18 to 30% by volume hydrogen halide. | 04-30-2009 |
20090297701 | Process for Repairing a Component with a Directional Microstructure - A method of repairing a component, in particular a gas turbine component, which is produced from a base material with an oriented microstructure, comprises the steps of: cleaning the repair site, filling the repair site with a filling material corresponding to the composition of the base material, carrying out a heat treatment in the region of the filled repair site, wherein the filling material has micro- and/or nano-scale particles, during the filling of the repair site measures which prevent the oxidation of the filling material are taken, an the temperatures and holding times of the heat treatment are set appropriately for the composition of the filling material and of the base material of the component in such a way that an epitaxial attachment of the filling material to the surrounding bas material takes place. | 12-03-2009 |
20100000976 | Process for Repairing a Component Comprising a Directional Microstructure by Setting a Temperature Gradient During the Laser Heat Action, and a Component Produced by Such a Process - In one aspect, a repair method for repairing components comprising a base material with a directed microstructure is provided. The repair is performed in such a way that the repaired location correspondingly has a directed microstructure like the surrounding base material. A solder is applied in the region of a location to be repaired and is soldered to the component via heat exposure, a temperature gradient, i.e., for instance a temperature variation from a higher temperature to a lower temperature, is thereby produced in the region of the location to be repaired. | 01-07-2010 |
20100119859 | COMPONENT AND A SOLDER - A component and a solder are provided. The solder is used to repair the component including a base material with a directional microstructure. The solder used includes two constituents, a first constituent and a second constituent, including different grain size distributions. The first constituent of the solder includes a composition that corresponds to or is similar to the base material. | 05-13-2010 |
20100129544 | Polymer-Based Ceramic Coatings for Protecting Surfaces Against Fluoride Ions During a Cleaning Process - A process for the gentle cleaning of partially corroded or oxidized surfaces with fluoride ions is provided. The parts of the surface which are not corroded or oxidized are coated with polymer-based ceramics before the start of the cleaning process. The coating process includes applying a precursor of the polymer-based ceramic and then ceramicizing the precursor. | 05-27-2010 |
20100163142 | OSCILLATING HEAT TREATMENT METHOD FOR A SUPERALLOY - Superalloy solidified in a directional manner often cannot be subjected to heat treatment because the heat treatment leads to recrystallization. As a result of the temperature profile during a heat treatment according to the invention which oscillates in the manner of a pendulum, a recrystallization during heat treatment can be avoided because mechanical stresses are reduced thanks to the recurring succession of dissolutions and precipitations of the precipitate. The method can be applied to a Ni-based superalloy with γ-precipitates. After the cyclic heat treatment, the temperature can be adjusted to and maintained at a temperature which is the same as or higher than the complete dissolution temperature. An oscillating movement can also take place above the complete dissolution temperature. | 07-01-2010 |
20100192589 | Method for Production of a Coating System - Conventionally, cavities and cracks are filled with a solder metal which forms brittle phases with a subsequently applied coating, which have a negative effect on the mechanical properties. According to the invention, the components which form brittle phases are removed from the solder metal. The above is achieved, whereby a second material is applied which reacts with said component and which is removed again with the brittle phases, before the coating. | 08-05-2010 |
20100218787 | FIC Installation and Method for Operating a FIC Installation in the Pressure Range Above Atmospheric Pressure - A method of Fluoride Ion Cleaning (FIC) of a component is provided. A FIC installation includes a reaction chamber and a reactive gas or a reactive gas mixture. A pressure of the reactive gas or the reactive gas mixture in the reaction chamber is set at least occasionally above atmospheric pressure, wherein the pressure in the reaction chamber is periodically lowered and raised. | 09-02-2010 |
20110073636 | Method and device for welding workpieces made of high-temperature resistant super Alloys - 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. | 03-31-2011 |
20110089150 | Method and Apparatus for Welding Workpieces of High-Temperature Superalloys - 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. | 04-21-2011 |
20110244264 | Mould for soldering, arrangement of moulds, a method and a component - The use of pre-sintered soldering plates, referred to as PSPs, frequently proceeds without a continuous, cohesive soldering connection between individual grains in the sinter material and between the sinter and base material. A process soldering of prefabricated, perforated, porous or drilled plates or porous, spongy, laminar material that, can be laid full-surfaced on a base element as a plurality of tiles or as individual porous, drilled or perforated inlay elements designed contour-close on a recess in the base material is provided. To this end, the selected plate materials can be mechanically equal to the base material or otherwise set off for the particular requirements of the component insert. The solder can be offset by specific diffusible, melting-point-lowering components. A mould that has an open, continuous porosity so that melted or fluid solder can flow through from the one surface to the other surface is also provided. | 10-06-2011 |
20120103950 | WELDING METHOD AND COMPONENT - 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. | 05-03-2012 |
20120267347 | Method for welding workpieces made of highly heat-resistant superalloys, including a particular mass feed rate of the welding filler material - 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 ≦350 mg/min. | 10-25-2012 |
20120273468 | SINGLE CRYSTAL WELDING OF DIRECTIONALLY SOLIDIFIED MATERIALS - A process for the directional solidification of a weld seam during build up welding is provided which includes the targeted selection of process parameters for laser welding, feeding, laser power beam diameter, and powder mass flow. The temperature gradient substantially decisive for single crystal growth during laser application welding can be set deliberately. | 11-01-2012 |
20120285933 | MONOCRYSTALLINE WELDING OF DIRECTIONALLY COMPACTED MATERIALS - A method for directionally compacting a weld seam during build-up welding is provided. The method is used for the build-up welding of a component substrate that is compacted in a directional manner and comprises dendrites which extend in a substrate dendrite direction. The method parameters with respect to feed, laser power, weld beam diameter, powder beam focus and/or powder mass flow are designed such that they result in a local orientation of the temperature gradient to the solidification front, which is smaller than 45° with respect to the substrate dendrite direction of the dendrites in the substrate, wherein the relative speed is between 30 mm/mm and 100 mm/mm, and/or the power is between 200 W and 500 W, and/or the diameter of the laser beam on the surface of the substrate is between 3 mm and 6 mm, and/or the mass feed rate is between 30 mg/mm and 600 mg/mm. | 11-15-2012 |
20120308843 | METHOD OF MANUFACTURING A HOT-GAS COMPONENT WITH A COOLING CHANNEL AND A HOT-GAS COMPONENT THEREOF - A method of manufacturing a hot-gas component with cooling channels and a hot gas component manufactured by the method is provided. Pre-sintered preform materials are used for the manufacturing of a hot-gas component with a cooling channel. The method initially involves providing a carrier substrate for the hot-gas component and then providing a sheet of pre-sintered preform material. The sheet is then arranged on the carrier substrate so as to form the cooling channel. The sheet and the carrier substrate are then brazed to manufacture the hot-gas component with the cooling channel. | 12-06-2012 |
20130142965 | LASER MICROCLADDING USING POWDERED FLUX AND METAL - A laser microcladding process utilizing powdered flux material ( | 06-06-2013 |
20130199304 | CLAMPING DEVICE - A clamping device for clamping a flat material test sample while a material test is carried out is provided. The clamping device includes a substantially cylindrical clamping part, from the free end of which there extends a receiving slot for receiving the material test sample, a pressure ring surrounding the clamping part in the region of the receiving slot, and a pressure sleeve provided between the clamping part and the pressure ring, the pressure sleeve is formed and actuable such that, under radial expansion, it connects the clamping part and the pressure ring together and clamps the material test sample held in the receiving slot. | 08-08-2013 |
20140099476 | ADDITIVE MANUFACTURE OF TURBINE COMPONENT WITH MULTIPLE MATERIALS - A method for additive manufacturing with multiple materials. First ( | 04-10-2014 |
20140123890 | SINGLE-CRYSTAL WELDING OF DIRECTIONALLY COMPACTED MATERIALS - 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. | 05-08-2014 |
20140191017 | NICKEL-BASED ALLOY, USE AND METHOD - The invention relates to a novel alloy which comprises the elements carbon (C), chromium (Cr), cobalt (Co), molybdenum (Mo), tungsten (W), titanium (Ti), aluminium (Al), boron (B), and zirconium (Zr), based on nickel, and which has a very low tendency to form cracks during welding. | 07-10-2014 |
20140339206 | REMELTING METHOD AND SUBSEQUENT REFILLING AND COMPONENT - A method for re-melting and refilling a defect ( | 11-20-2014 |
20150047168 | REPAIR CHAIN FOR TURBOMACHINERY COMPONENTS USING ADDITIVE MANUFACTURING TECHNOLOGY - In a method for repairing a machinery component, one or more defects are detected on the machinery component. At least one portion of the component is removed, wherein the at least one portion includes at least one of the one or more defects. One or more data points are determined for at least one slot, wherein the at least one slot is created by removing the at least one portion of the component. At least one repair coupon is generated from the one or more data points. The at least one repair coupon is attached with the at least one slot. | 02-19-2015 |