Abstract: A method is used for laser welding a workpiece along a welding line. At least two laser beams, which are offset in relation to one another, are guided along the welding line by moving an optical deflector unit. The method may be used for welding closure pins and casting induced openings of gas turbine blades.

Abstract: Coatings which are applied to a component have to be removed again in a complex way in certain regions, since a coating was not desired to be present in those regions. The subsequent removal of this layer adversely affects the component, for example its geometry. The method according to the invention for coating a component includes a masking which at least partially comprises a ceramic powder and can therefore easily be removed after the component has been coated.

Abstract: On account of their type of coating, layer systems of the prior art often exhibit poor adhesion to the substrate. If the components are subject to high mechanical stresses, the layer can then become detached. The layer system according to the invention has separately produced anchoring means which allow stronger attachment to the substrate than the attachment of the outer layer to the substrate.

Abstract: Methods according to prior art for producing three-dimensional moulded bodies generally require outer moulds which define the geometry of a component to be produced. The inventive method for producing three-dimensional moulded bodies renders one such mould redundant. The geometry of a component to be produced is defined by a pre-determined laser guidance or by the geometry of the partial quantities used.

Abstract: On account of their form of coating, layer systems according to the prior art often only have a low level of attachment to the substrate. The layer may then become detached in the event of high mechanical loads being applied to the components. The layer system according to the invention has separately produced anchoring means which are more strongly attached to the substrate than the attachment of the layer to the substrate.

Abstract: Coatings that are applied to a component have to be removed again from certain areas using costly methods, because coating was not required in those areas. The subsequent removal of this layer can impair the component, for example in terms of its geometry. The inventive method for coating a component uses a mask, which consists at least partially of a ceramic powder and can therefore easily be removed after the component has been coated.

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: 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 (9, 10) in a particularly simple way by assembling a turbine component (9, 10) at least from a first base part (1) and a build-up material (8), the subregion (7) of the joining zone having a preferred crystal orientation (2), so that disadvantageous properties of a joining zone without a preferred crystal orientation (2) which have hitherto been encountered are avoided.

Abstract: Coatings which are applied to a component have to be removed again in a complex way in certain regions, since a coating was not desired to be present in those regions. The subsequent removal of this layer adversely affects the component, for example its geometry.

Abstract: In the case of the epitaxial growth according to the prior art, a number of strips often have to be produced in a plane in order to restore an area to be repaired. This leads to overlapping and misorientation of crystalline structures.

Abstract: The invention relates to a method for laser welding a workpiece (1) along a welding line (20). A laser beam (13) is guided along the welding line (20) by moving an optical deflector unit (17). High movement speeds can be obtained using only a limited amount of machinery. The invention is particularly suitable for welding closure pins and casting induced openings (7) of gas turbine blades (1).