Abstract: The invention relates to a process for cleaning passages in workpieces, in particular cooling-air passages in turbine components, such as transition pieces or turbine blades or vanes, wherein the workpiece having the passages is immersed in a liquid bath and a liquid is suddenly forced under pressure through the passages.

Abstract: Masking layers for components according to the prior art react with the base material of the component and/or are difficult to remove again. The component according to the invention has a masking layer which can very easily be removed following coating of the components, since on the one hand the bonding between the masking layer and the base material of the component is poor, or the masking layer can easily be removed through penetration of a liquid.

Abstract: The invention relates to a material composition that is used for producing a coating for a component, especially a turbine component, which is made of a metallic basic material, i.e. a metal or a metal alloy. Said material composition comprises a matrix material for forming a basic coating matrix and at least one filler for adjusting desired coating proportions or coating characteristics. The matrix material can be provided especially with basic glass ceramic properties. The inventive material composition is characterized in that the matrix material and/or the filler contains nanoparticles.

Abstract: A process is intended to allow simple and particularly reliable electrolyte generation and conditioning from metal-containing used electrolytes and/or used process solutions and/or pulverulent metal wastes. For this purpose, waste products containing metal ions from metal surface treatment processes are to be treated by producing and/or using a metal ion mixed solution, replacing anions contained in the metal ion mixed solution with anions selected for an intended use selected and selectively removing metal ions which are categorized as unsuitable for the intended use selected from the metal ion mixed solution prepared in this way.

Abstract: Cracks are conventionally difficult to clean which often leads to damage to other regions of the component for cleaning. According to the invention, a plasma cleaning method is used, whereby a pressure and/or a separation of an electrode to the component are varied, in order to achieve a plasma cleaning in the crack.

Abstract: The cold spraying process according to the invention uses cold gas streams whose properties (temperature (T), particle density (p), pressure (p), particle velocity (v)) are variably changed such that they can be adapted to the desired properties of the coatings.

Abstract: Components comprising corrosion products are often reused, in which case the corrosion product has to be removed. According to the prior art, this takes a very long time since the reaction times with the corrosion product are often very long. According to the invention, the corrosion product is pretreated in order to produce a larger attackable surface area, so that the corrosion product can be removed more quickly.

Abstract: A method for removing a layer area of a component in which the component is firstly treated in at least one salt bath, and then, in a further method step, treated at least once in an acid bath. The method can include adding sodium oxide to a salt bath as an oxygen donor treating the component with a salt bath wherein the salt bath is selected from the group consisting of: sodium hydroxide and potassium hydroxide and treating the component with an acid bath wherein the acid bath is selected from the group consisting of: nitric acid and phosphoric acid.

Abstract: In the process according to the invention for protecting openings in a component made from an electrically conductive base material, in particular from metal or from a metal alloy, during a treatment process, preventing penetration of material, prior to the treatment process the openings are closed up using a filling material which is removed again following the treatment process. The process according to the invention is distinguished by the fact that chains of Si—O—Si and/or Si—O—C are used as filling material.

Abstract: Operationally-stressed components are often returned to use by means of an acid treatment. The duration during which the component remains in the acid is conventionally fixed at a standard value, such that individual stresses are not taken into account.

Abstract: The invention relates to a method for removing an area of a layer of a component consisting of metal or a metal compound. According to prior art, corrosion products of a component are removed in a first step by applying a molten mass or by heating in a voluminous powder bed. This requires high temperatures or a large amount of space. The inventive method for removing corrosion products of a component is characterized in that a cleaning agent is applied locally, which removes the corrosion products by means of a gaseous reaction product.

Abstract: Masking layers for components according to the prior art react with the base material of the component and/or are difficult to remove again. The component according to the invention has a masking layer which can very easily be removed following coating of the components, since on the one hand the bonding between the masking layer and the base material of the component is poor, or the masking layer can easily be removed through penetration of a liquid.

Abstract: In prior art, through holes often have to be after-treated manually. Disclosed is a method allowing through holes to be after-treated in a chemical or electrochemical manner with the aid of a material-removing agent, the outer surface located around a discharge port of the through hole being protected accordingly from being attacked by the agent that is to be removed.

Abstract: Short fibers in a solder or a welding material often do not have the desired strength. The invention uses fiber mats which have been introduced onto a surface or into a recess of a metallic component.

Abstract: The invention relates to a method for removing an area of a layer of a component consisting of metal or a metal compound. According to prior art, corrosion products of a component are removed in a first step by applying a molten mass or by heating in a voluminous powder bed. This requires high temperatures or a large amount of space. The inventive method for removing corrosion products of a component is characterized in that a cleaning agent is applied locally, which removes the corrosion products by means of a gaseous reaction product.

Abstract: The invention provides a method for determining the position of a channel which has been electrochemically machined in a workpiece by an electrolyte and/or the wall thickness which is present between the electrochemically machined channel and the surface of the component, in which magnetic particles are added to the electrolyte used during the machining, the magnetic fields associated with the magnetic particles are detected, and the position of the electrochemically machined channel and/or the wall thickness which is present between the electrochemically machined channel and the surface of the component is determined on the basis of the detected magnetic fields.

Abstract: Prior art methods for removing a layer area of a component (stripping) lead to poor results since a removal, for example, ensues in a nonuniform manner. In addition, these prior art methods are time intensive. An inventive method for removing a layer area of a component consists of firstly treating the layer areas to be removed with a salt solution and then with acid, whereby in an intermediate or final step, the component is treated with a complexing agent.

Abstract: In previously known electrodeposition methods, alloys can be deposited only badly on a substrate from the components thereof. The inventive method allows an alloy layer to be deposited on a substrate by pulsing the current/voltage used for electrode position.

Abstract: The invention relates to a method for removing at least one layer area of a component made of metal or a metal compound. When components are used in high temperature areas, they acquire degraded areas which are removed by means of an acid attack. Removal during said acid treatment is uneven since areas having different acidic solubility behavior arise as a result of said degradation. According to the inventive method, the chemical composition and the phase composition of the component can be altered in such a matter that an even removal can take place during the acid treatment.

Abstract: Components which are subject to operating loads can often be passed for refurbishment by means of an acid treatment. The time for which the components remain in the acid has hitherto been determined empirically, which means that individual loads are not taken into account. The process according to the invention for the surface treatment of a component proposes that at least repeatedly a measurement voltage be applied to the component, resulting in the flow of a current, the time profile of which represents the state of the surface treatment and is used to decide upon when to terminate or interrupt the acid treatment.