Abstract: A method for deposition of at least one electrically conducting film on a substrate, wherein the method includes the steps of: selecting a layer of a film material, wherein the layer includes a mask on a front side, and wherein the layer and the mask are one piece; positioning the front side of the layer upon the substrate; applying at least one laser pulse onto a back side of the layer, so as to melt and to vaporize at least parts of the layer such that melt droplets are propelled toward and deposited upon the substrate; and forming the film, wherein at least one slot of the mask limits the distribution of the melt droplets.

Abstract: 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.

Abstract: During welding, frequently cracks develop at the end of the weld seam. A method is provided in which the power is reduced at the end of the weld seam, reducing the development of cracks. For the method, a welding appliance is used wherein the welding appliance may be a laser.

Abstract: A thin film manufacturing apparatus is disclosed, including a liquid ejecting unit which ejects a liquid onto an object on which a film is to be formed and which forms a coating film; a first laser irradiating unit which continuously irradiates a laser light onto the coating film and which evaporates a solvent of the coating film; and a second laser irradiating unit which irradiates a laser light pulse onto the coating film of which the solvent is evaporated and which crystallizes the coating film of which the solvent is evaporated.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a method for deposition of at least one electrically conducting film (20) on a substrate (30), comprising the steps: selecting a layer (10) of a film material, wherein the layer (10) comprises a mask (40) on a front side (11) and wherein the layer (10) and the mask (40) are one piece, positioning the front side (11) of the layer (10) upon the substrate (30), applying at least one laser pulse (120) onto a back side (12) of the layer (10), so as to melt and to vaporize at least parts of the layer (10) such that melt droplets (110) are propelled toward and deposited upon said substrate (30), forming the film (20), wherein at least one slot (45) of the mask (40) limits the distribution of said melt droplets (110).

Abstract: During welding, frequently cracks develop at the end of the weld seam. A method is provided in which the power is reduced at the end of the weld seam, reducing the development of cracks. For the method, a welding appliance is used wherein the welding appliance may be a laser.

Abstract: A welding method in which the power is controlled in accordance with the temperature of the welding point is provided. The temperature of the welding point is lowered in a controlled manner at the end of the method and the temperature of this welding point is measured by a temperature measuring appliance.

Abstract: 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.

Abstract: 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.

Abstract: A device and a method for welding a component are provided. The component is arranged and welded in a chamber. A welding appliance is provided, the welding appliance being arranged outside the chamber.

Abstract: A method for fusing a curved surface of a substrate is provided. An energy beam with an energy source and a curved surface of a substrate are provided. The energy beam and/or the substrate are moved toward one another in order to fuse the curved surface and an orientation of the energy beam in relation to the curved surface is varied during the fusing of the curved surface.

Abstract: Welding repairs are often carried out on directionally solidified components that nevertheless do not possess the desired crystallographic surface alignment, which reduces mechanical strength. The method provided selects the direction of travel depending on the crystallographically preferred direction of the substrate such that no more misorientations occur. A laser beam may be used for remelting.

Abstract: A turbine blade or vane with a platform and two overlapping weld seams, each weld seam having a width, is provided. An overlapping region of the two weld seams is 40% to 60% of the width of one weld seam. The weld seams run parallel or perpendicularly to the platform of the turbine blade or vane. Further, a method for welding a turbine blade or vane is provided.

Abstract: During the welding of components, the components are preheated to avoid stresses. A device is provided for heating a turbine blade or vane in that a heating coil is arranged in a particular manner to obtain a temperature gradient in a component. A process for welding a turbine blade or vane is also provided.

Abstract: The present invention relates to a method for smoothing and polishing surfaces by treating them with energetic radiation, in particular laser radiation, in which the to-be-smoothed surface is remelted in a first treatment step using said energetic radiation and employing first treatment parameters at least once down to a first remelting depth of approx. 5 to 100 ?m, which is greater than a structural depth of the to-be-smoothed structures of said to-be-smoothed surface, wherein continuous radiation or pulsed radiation with a pulse duration of ?100 ?s is employed. The method makes it possible to automatically polish any three-dimensional surface fast and cost effective.