DE102016209618A1 - Method and device for the additive production of at least one component region of a component - Google Patents

Abstract

The invention relates to a method for the additive production of at least one component region of a component, in particular of a component of a turbomachine. The method comprises the steps of a) coating at least one powder layer (40) of a powdered component material (22, 38) in layers on a building platform (12) in the region of a buildup and joining zone (46); b) local solidification of the powder layer (40) by selective exposure by means of at least one high-energy beam (34) in the region of the assembly and joining zone (46) to form a component layer (24); c) at least partially discharging non-solidified component material (38) at least in the region of the component layer (24) formed in step b) via at least one opening (18) formed in the construction platform (12); d) re-melting and solidifying at least one edge contour (42) of the at least one component layer (24) by means of the high-energy beam (34); and e) repeating steps a) to d) until completion of the component area or component (26). The invention further relates to a device (10) for carrying out such a method.

Description

The invention relates to a method and a device for the additive production of at least one component region of a component.

Methods and apparatus for making individual component areas or complete components are known in a wide variety. In particular, additive or additive manufacturing methods (so-called rapid manufacturing or rapid prototyping methods) are known in which the component, which may be, for example, a component of a turbomachine or an aircraft engine, is built up in layers. Predominantly metallic components can be produced, for example, by laser or electron beam melting methods. In this case, at least one powdered component material is initially applied in layers in the region of a buildup and joining zone, in order to form a powder layer. Subsequently, the component material is locally solidified by supplying energy to the component material in the region of the assembly and joining zone by means of at least one high-energy beam, whereby the component material melts and forms a component layer. The high-energy beam is controlled in dependence on a layer information of the component layer to be produced in each case. The layer information is usually generated from a 3D CAD body of the component and subdivided into individual component layers. After solidification of the molten component material, the construction platform is lowered in layers by a predefined layer thickness. Thereafter, the said steps are repeated until the final completion of the desired component area or the entire component. The component region or the component can in principle be produced on a construction platform or on an already produced part of the component or component region. The advantages of this additive manufacturing are, in particular, the possibility of being able to produce very complex component geometries with cavities, undercuts and the like within the scope of a single method.

In this type of additive manufacturing, however, powder particles are often baked or sintered on the surface of the components to be produced, in particular in the contour region of the components. This leads to very rough surfaces, which in turn can adversely affect the strength of the manufactured components or component areas. By optimizing the process parameters, an attempt is made to smooth the surface. However, this is not sufficient for a variety of applications, in particular for components for the aerospace industry. Therefore, the manufactured components or component areas must often be mechanically or chemically reworked, which is associated with a high expenditure of time and money. In addition, interior surfaces in particular are sometimes difficult or impossible to access for conventional smoothing methods.

Object of the present invention is to provide a generic method and a generic device, which allows the additive production of component areas or complete components with improved surface quality. Another object of the invention is to provide an additively manufactured component with improved surface quality.

The objects are achieved by a method having the features of claim 1, by a device having the features of claim 10 and by a component according to claim 15. Advantageous embodiments with expedient developments of the invention are specified in the respective subclaims, wherein advantageous embodiments of each invention aspect are to be regarded as advantageous embodiments of the respective other aspects of the invention.

A first aspect of the invention relates to a method for the additive production of at least one component region of a component, in particular a component of a turbomachine, in which at least the steps a) applying in layers a layer of powdered component material to a construction platform in the region of a buildup and joining zone; b) local solidification of the powder layer by selective exposure by means of at least one high-energy beam in the region of the assembly and joining zone to form a component layer; c) at least partially discharging unconsolidated component material at least in the region of the component layer formed in step b) via at least one opening formed in the construction platform; d) repeated melting and / or heating to a temperature greater than a solidus temperature of the component material and solidification of at least one edge contour of the at least one component layer by means of the high-energy beam and e) repeating steps a) to d) until completion of the component region or component become. An improved surface quality is achieved according to the invention in that non-solidified powder particles of the component material, which are not fused with a contour or a surface of the component, are drained via the opening (s) in the construction platform. Thus, only the material powder particles melted on the contour or surface of the component layer formed or of the component formed remain only longer. By re-melting and / or repeated heating to a temperature greater than the solidus temperature of the component material and solidifying These areas, in particular the edge contour of the component layer or of the component by means of the high energy beam results after cooling these areas a smooth surface. There can be no further rough surfaces caused by excess powder particles. The term "solidus temperature" is also understood to mean solidus temperature ranges of component materials, as they occur in particular with metal alloys.

In this way, smooth surfaces are already achieved during the additive manufacturing process, so that can be advantageously dispensed with additional post-processing. In addition, internal or closed surfaces are directly accessible. Further advantages are that any contamination by chemical aids or other foreign materials can be excluded and there is no risk of undesired material removal (dimensional stability). In addition, the strength of the resulting component is advantageously increased. In addition, the inventive method simplifies the powder handling in the corresponding device, since it is possible to discharge the unincorporated material powder at the end of the process from the system. In addition, the unassembled material powder can be processed and used for the next additive manufacturing process. Furthermore, it is possible to form a circulating powder circuit during the process for additive manufacturing.

In advantageous embodiments of the method according to the invention, it is provided that the discharge of the non-solidified component material according to step c) after the formation of one or more component layers according to step b) is performed. In this case, the discharge of the non-solidified component material according to step c) can be carried out in uniform or irregular intervals. The inventive method can thus be advantageously adapted to the complexity of the component to be produced. The discharge of the non-solidified component material only after formation of a plurality of component layers can be carried out, for example, with less complex components. This significantly increases the process speed.

In further advantageous embodiments of the method according to the invention, the layered application of the powder layer according to step a) takes place by means of a coater, wherein the opening (s) is closed in the building platform at least in an application of the first powder layer at least in the region of the component to be formed. This makes it possible to use the method according to the invention in conventional devices for the additive production of components. However, it is also possible for the layered application of the powder layer according to step a) to take place by means of a transfer of the component material from a material reservoir arranged below the build platform through the opening (s) onto the build platform at least in the region of the buildup and joining zone. The movement of the component material can take place by means of a lifting and lowering device, which is arranged within the material reservoir. By bringing the component material from the material reservoir onto the construction platform, a space-saving possibility of applying the powder layer to the construction platform results. In this case, for uniform distribution of the component material on the building platform before local solidification of the correspondingly formed powder layer according to step b) they are smoothed by a mechanical smoothing device and / or by vibrating the construction platform and / or vibrating the powder layer. The mechanical smoothing device may be a coater or a squeegee. The vibration of the building platform and / or the powder layer can be effected by means of an ultrasonic device.

Spending the component material from a material reservoir arranged under the build platform onto the build platform can be regarded as an independent invention independently of the first invention aspect and has a correspondingly independent inventive content. A corresponding method for the additive production of at least one component region of a component, in particular of a component of a turbomachine, may comprise the following steps: a) coating at least one powder layer of a powdered component material on a construction platform by means of a transfer of the component material from a material reservoir arranged below the construction platform via at least an opening formed in the building platform on the building platform at least in a region of a building and joining zone; b) local solidification of the powder layer by selective exposure by means of at least one high-energy beam in the region of the assembly and joining zone to form a component layer and c) repeating steps a) and b) until completion of the component region or component. Furthermore, there is the possibility that, in a further intermediate step, an at least partial discharge of non-solidified component material takes place via the opening at least in the region of the component layer formed in step b). The discharge of the non-solidified component material can be carried out after the formation of one or more component layers according to step b). In addition, the discharge of the non-solidified component material may be performed at regular intervals or at irregular intervals. Finally, there is the possibility of re-melting and / or heating to a temperature greater than that Solidus temperature of the component material and solidifying at least one edge contour of the at least one component layer by means of the high energy beam. The movement of the component material can take place by means of a lifting and lowering device, which is arranged within the material reservoir. There is also the possibility that the transfer of the component material to the build platform is assisted or entirely carried out by a purge gas, in particular an inert gas. For this purpose, a purge gas stream is adjusted such that it is directed into and through the material reservoir in the direction of the opening (s) of the component platform. By bringing the component material from the material reservoir onto the construction platform, a space-saving possibility of applying the powder layer to the construction platform results. In this case, for uniform distribution of the component material on the building platform before local solidification of the correspondingly formed powder layer according to step b) they are smoothed by a mechanical smoothing device and / or by vibrating the construction platform and / or vibrating the powder layer. The mechanical smoothing device may be a coater or a squeegee. The vibration of the building platform and / or the powder layer can be effected by means of an ultrasonic device. Further features and their advantages will become apparent from the description of the first aspect of the invention.

In further advantageous embodiments of the method according to the invention, during the discharge of the non-solidified component material according to step c), the component material is set in vibration and / or a purge gas, in particular an inert gas, directed onto the component material. This ensures a safe and complete draining of the uninstalled component material through the opening (s) of the construction platform.

Furthermore, there is the possibility that, after one of the steps b), c) and / or d), the building platform is lowered by a predefined layer thickness. Such a lowering ensures a uniform coating order of the material powder.

Further advantages arise when an electron beam and / or a laser beam is used as the high-energy beam. As a result, component regions or components can be produced whose mechanical properties at least substantially correspond to those of the component material. For generating the laser beam, for example CO ₂ laser, Nd: YAG laser, Yb fiber laser, diode laser or the like may be provided. It can also be provided that two or more electron or laser beams are used in order to reduce the processing time and / or to be able to produce particularly large-area component layers.

A second aspect of the invention relates to a device for the additive production of at least one component region of a component, in particular of a component of a turbomachine, wherein the device comprises at least one radiation source for generating at least one high energy beam, by means of which at least one powder layer of a component material in the region of a buildup and joining zone Building platform locally to at least one component layer is solidified comprises. In addition, the construction platform has at least one closable or non-closable opening for the at least partial release of non-solidified component material at least in the region of the component layer formed. Furthermore, the device according to the invention comprises a control device, which is designed to control the radiation source such that a further melting and / or heating to a temperature greater than the solidus temperature of the component material and solidifying at least one edge contour of the at least one component layer by means of the high energy beam is carried out. An improved surface quality of the additively produced component region or component is made possible in accordance with the invention in that non-solidified powder particles of the component material, which are not fused with the contour or the surface of the component, are discharged via the opening (s) in the construction platform. These do not stand in the way of the subsequent, subsequent melting and / or reheating to a temperature greater than the solidus temperature of the component material and solidifying at least the edge contour of the at least one component layer by means of the high energy beam performed smoothing or revision in the way. There can be no further rough surfaces caused by excess powder particles. In the context of the present invention, the expression "designed to be" or "designed" is understood to mean not only a control device which has the fundamental property for carrying out the said steps, but which is specifically designed and set up, namely the steps mentioned above perform. By means of these additional steps according to the invention during the build-up process, the surface roughness of the respective component layer (s) and thereby of the component as a whole can be significantly reduced overall. The term "solidus temperature" is also understood to mean solidus temperature ranges of component materials, as they occur in particular with metal alloys. In principle, the device can comprise a controllable and / or controllable radiation source or a plurality of controllable and / or controllable radiation sources in order to generate the respectively required high-energy beams. Particular advantages arise when the device is designed to a method according to the first aspect of the invention perform. The resulting features and their advantages will become apparent from the description of the first aspect of the invention, advantageous embodiments of the first aspect of the invention are to be regarded as advantageous embodiments of the second aspect of the invention and vice versa.

In advantageous embodiments of the device according to the invention, this comprises a material reservoir arranged underneath the construction platform and designed for the component material. In addition, the device may comprise a lifting and lowering device arranged in the material reservoir. The material reservoir ensures that non-solidified component material is collected and is accessible for reprocessing. On the one hand, it is possible via the lifting and lowering device to transfer the unincorporated material powder at a defined speed from the area of the construction platform into the material reservoir. Furthermore, the component material can be transported out of the material reservoir via the opening (s) onto the construction platform at least in the region of the assembly and joining zone. In this case, can be dispensed with an additional coater for applying the powder layer on the build platform. However, there is also the possibility that the device comprises a coater for coating the powder layer in layers.

In further advantageous embodiments of the device according to the invention, this has at least one mechanical smoothing device and / or at least one vibrating device and / or at least one purge gas supply line and / or a powder-conducting connection extending between the material reservoir and the coater or a further material reservoir. The mechanical smoothing device and the vibrating device are used for uniform application and smoothing of the respective powder layer of the component material applied to the construction platform. The mechanical smoothing device may be a coater or a squeegee. As a vibration device can be provided an ultrasonic device. This and another vibratory device may also be used to vibrate the component material. This facilitates the discharge of the uninstalled component material through the openings of the build platform. For this purpose, a purge gas, in particular an inert gas can be used, which is directed over the at least one purge gas supply line on the component material. By means of a powder-conducting connection running between the material reservoir and the coater or a further material reservoir, it is possible to form a so-called powder circuit in the device. As a result, non-solidified, that is not used, material powder can be used for the formation of further powder layers.

Furthermore, a device for the additive production of at least one component region of a component, in particular a component of a turbomachine comprising at least one radiation source for generating at least one high-energy beam, by means of which at least one powder layer of a component material in the region of a building and joining zone of a building platform locally to at least one Component layer is solidifiable, considered as an independent invention regardless of the second aspect of the invention and has a corresponding independent inventive content. For this purpose, the device has at least one arranged below the build platform material reservoir and at least one arranged in the material reservoir lifting and lowering device, at least one in the build platform closable or non-closable opening formed the powdered component material from the material reservoir on the build platform at least in one Area of the construction and joining zone can be brought. There is also the possibility that the transfer of the component material to the build platform is assisted or entirely carried out by a purge gas, in particular an inert gas. For this purpose, a purge gas stream is adjusted such that it is directed into and through the material reservoir in the direction of the opening (s) of the component platform. An at least partial discharge of non-solidified component material at least in the region of the formed component layer can also take place via the at least one opening in the construction platform. Thus, non-solidified component material can be collected in the material reservoir and made available for reprocessing. About the lifting and lowering device, it is possible to convert the unincorporated material powder with a defined speed of the construction platform in the material reservoir or vice versa on the component platform. In addition, the device may have at least one mechanical smoothing device and / or at least one vibrating device and / or at least one purge gas feed line and / or a powder-conducting connection extending between the material reservoir and the coater or a further material reservoir. The mechanical smoothing device and the vibrating device are used for uniform application and smoothing of the respective powder layer of the component material applied to the construction platform. As a vibration device can be provided an ultrasonic device. This and another vibratory device may also be used to vibrate the component material. This facilitates the discharge of the uninstalled component material through the openings of the build platform. For this purpose, a purge gas, in particular an inert gas can be used, which is directed over the at least one purge gas supply line on the component material. By means of a powder-conducting connection running between the material reservoir and the coater or a further material reservoir, it is possible to form a so-called powder circuit in the device. As a result, non-solidified, that is not used, material powder can be used for the formation of further powder layers.

Furthermore, a construction platform, as has been described in detail in the second aspect of the invention as part of a device, as an individual element on an independent inventive content and be considered as an independent invention.

A third aspect of the invention relates to a component for a turbomachine, in particular a compressor or turbine component, wherein a high surface quality of the component is ensured according to the invention that this at least partially or completely by a method according to the first aspect of the invention and / or by means of a device according to obtained in the second aspect of the invention. The resulting features and advantages thereof will become apparent from the description of the first and second aspects of the invention, with advantageous embodiments of the first and second aspects of the invention to be regarded as advantageous embodiments of the third aspect of the invention and vice versa.

Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description, as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respectively specified combination but also in other combinations without the scope of the invention leave. Thus, embodiments of the invention are to be regarded as encompassed and disclosed, which are not explicitly shown and explained in the figures, however, emerge and can be produced by separated combinations of features from the embodiments explained. Embodiments and combinations of features are also to be regarded as disclosed, which thus do not have all the features of an originally formulated independent claim. Showing:

1 a schematic plan view of a construction platform of a device according to the invention;

2 a schematic sectional view of a device according to the invention in a first working position;

3 a schematic sectional view of a device according to the invention in a second working position; and

4 a schematic sectional view of a device according to the invention in a third working position.

1 shows a schematic plan view of a construction platform 12 a device 10 for the additive production of at least one component region of a component 26 , You realize that the build platform 12 a variety of openings 18 includes. In the illustrated embodiment, the openings 18 circular shaped. But it is also possible that the openings assume other geometric shapes. For example, semicircular, oval, ellipsoid, rectangular, strip, and other geometric shapes of the openings 18 conceivable. There is also the possibility that the openings 18 by means of a closure mechanism (not shown) are at least partially closed. This can be done for example by means of a second plate member (not shown), which, for example, on a bottom, that is, the component 26 opposite side of the build platform 12 is movably arranged. To close the openings 18 This second plate element is in abutment with the underside of the build platform 12 brought and thus closes the openings 18 , Furthermore, there is the possibility that shutter-like closure elements, for example, strip-shaped openings 18 close and open. A variety of other closure mechanisms is conceivable.

The size or diameter of the openings 18 is usually fifty to five hundred times, more preferably fifty to one hundred and fifty times, the average grain diameter of the powdery component material to be applied. Other sizes and diameters are conceivable.

2 shows a schematic sectional view of the device 10 in a first working position. It can be seen that the device 10 a radiation source 32 for generating a high energy beam 34 , in the embodiment shown, a laser beam, by means of which a powder layer 40 a component material 22 . 38 in the area of a construction and joining zone 46 the build platform 12 local to at least one component layer 24 of the component 26 fused or sintered. In the component 26 it may, for example, be a component of a turbomachine.

It can be seen that within the build platform 12 through openings 18 are formed, through which the component material 22 . 38 emotional can be. The arrows 28 suggest that on the one hand the in a material reservoir 48 mounted component material 22 through the openings 18 on the build platform 12 in the area of the assembly and joining zone 46 for building up the powder layers 40 can be promoted. In the reverse direction of movement there is the possibility that non-solidified component material 38 over the openings 18 into the material reservoir 48 is drained. In order to carry out these material movements, is within the material reservoir 48 a lifting and lowering device 20 arranged, the appropriate lifting and lowering movements (see arrow 30 ).

Furthermore one recognizes that the device 10 side walls 14 . 16 includes, on the one hand, the build platform 12 , the material reservoir 48 and the lifting and lowering device 20 include.

Furthermore, the device comprises 10 a mechanical smoothing device 36 for spreading and even application of the component material 38 to a powder layer 40 , In the illustrated embodiment, the mechanical smoother 36 around a squeegee. But it is also possible, the construction platform 12 For example, by means of an ultrasonic generator to vibrate, so as to apply a uniform layer of the powder layer 40 to ensure.

Out 2 It also becomes clear that the component area of the component 26 or the component 26 layer by layer over component layers 24 is built. The local, layer-by-layer merging of the individual powder layers 40 leads in particular in the area of a component contour 42 to surfaces 44 that due to a melting of surrounding powder grains of the component material 38 to the component contour 42 or their surface 44 are very rough.

From the in 3 in a second working position in a schematic sectional view of the device shown 10 it becomes clear that after producing one or more component layers 24 non-solidified, that is not built-up and fused powder of the component material 38 over the openings 18 into the material reservoir 48 is drained. This advantageously the component contours 42 and their surfaces 44 exposed. By means of a corresponding laser processing over the laser beam 34 can the component contours 42 and their surfaces 44 be smoothed now without further ado. Disturbing, in the area of the component contour 42 located further powder grains of the component material 38 are no longer available.

Also in 4 is this step in a schematic sectional view of the device 10 shown in a third working position. In contrast to the representation in 3 the laser beams hit here 34 temporally on the surfaces 44 the component contours 42 two component layers 24 , In particular from 4 it becomes clear that surfaces of the component 26 can be edited, which may later become inaccessible.

In this way, smooth surfaces are already achieved during the additive manufacturing process, so that can be advantageously dispensed with additional post-processing. In addition, internal or closed surfaces are directly accessible. Further advantages are that any contamination by chemical aids or other foreign materials can be excluded and there is no risk of undesired material removal (dimensional stability). In addition, the strength of the resulting component is advantageously increased.

After processing the surfaces 44 the component contours 42 of the component 26 becomes another powder layer 40 by moving the component material 22 from the material reservoir 48 into an area of the assembly and joining zone 46 and in particular via the last built-up component layer 24 performed (see also 2 ). These processes are repeated until the component 26 is finished.

The parameter values given in the documents for the definition of process and measurement conditions for the characterization of specific properties of the subject invention are also to be regarded as included within the scope of deviations - for example due to measurement errors, system errors, DIN tolerances and the like.

LIST OF REFERENCE NUMBERS

10

contraption

12

building platform

14

Side wall

16

Side wall

18

openings

20

Lifting and lowering mechanism

22

Component material

24

device layer

26

component

28

movement direction

30

movement direction

32

radiation source

34

laser beam

36

smoothing device

38

Component material

40

powder layer

42

component contour

44

surface

46

Assembly and joining zone

48

Material reservoir

Claims (15)

Method for the additive production of at least one component region of a component ( 26 ), in particular a component of a turbomachine, comprising at least the following steps: a) layer-by-layer application of at least one powder layer ( 40 ) of a powdered component material ( 22 . 38 ) on a building platform ( 12 ) in the region of a buildup and joining zone ( 46 ); b) local solidification of the powder layer ( 40 ) by selective exposure by means of at least one high-energy beam (US Pat. 34 ) in the area of the assembly and joining zone ( 46 ) with formation of a component layer ( 24 ); c) at least partially discharging unconsolidated component material ( 38 ) at least in the region of the component layer formed in step b) ( 24 ) over at least one in the build platform ( 12 ) formed opening ( 18 ); d) repeated melting and / or heating to a temperature greater than a solidus temperature of the component material and solidification of at least one edge contour ( 42 ) the at least one component layer ( 24 ) by means of the high-energy beam ( 34 ); and e) repeating steps a) to d) until completion of the component region or component ( 26 ). A method according to claim 1, characterized in that the discharge of the non-solidified component material ( 38 ) according to step c) after the formation of one or more component layers ( 24 ) is performed according to step b). A method according to claim 1 or 2, characterized in that the discharge of the non-solidified component material ( 38 ) according to step c) is carried out at regular or irregular intervals. Method according to one of the preceding claims, characterized in that the layered application of the powder layer ( 40 ) according to step a) by means of a coater, wherein the opening ( 18 ) in the build platform ( 12 ) at least during an application of the first powder layer ( 40 ) at least in the region of the component to be formed ( 26 ) is closed. Method according to one of claims 1 to 4, characterized in that the layered application of the powder layer ( 40 ) according to step a) by means of a transfer of the component material ( 22 ) from one below the build platform ( 12 ) arranged material reservoir ( 48 ) through the opening ( 18 ) on the build platform ( 12 ) at least in the region of the assembly and joining zone ( 46 ) he follows. Method according to claim 5, characterized in that the movement of the component material ( 22 ) by means of a lifting and lowering device ( 20 ) he follows. A method according to claim 5 or 6, characterized in that prior to the local solidification of the powder layer ( 40 ) according to step b) by means of a mechanical smoothing device ( 36 ) and / or by vibrating the build platform ( 12 ) and / or vibrating the powder layer ( 40 ) is smoothed. Method according to one of the preceding claims, characterized in that during the discharge of the non-solidified component material ( 38 ) according to step c) the component material ( 38 ) is put into vibration and / or a purge gas, in particular an inert gas, on the component material ( 38 ). Method according to one of the preceding claims, characterized in that after one of the steps b), c) and / or d) lowering of the building platform ( 12 ) takes place by a predefined layer thickness. Device for the additive production of at least one component region of a component ( 26 ), in particular a component of a turbomachine, comprising at least one radiation source ( 32 ) for generating at least one high-energy beam ( 34 ), by means of which at least one powder layer ( 40 ) of a component material ( 22 . 38 ) in the region of a buildup and joining zone ( 46 ) of a build platform ( 12 ) locally to at least one component layer ( 24 ) is solidified, characterized in that the building platform ( 12 ) at least one closable or non-closable opening ( 18 ) for at least partially discharging non-solidified component material ( 38 ) at least in the region of the formed component layer ( 24 ) and the device ( 10 ) comprises a control device, which is designed to control the radiation source ( 32 ) in such a way that a repeated melting and / or heating to a temperature greater than a solidus temperature of the component material and solidification of at least one edge contour ( 42 ) the at least one component layer ( 24 ) by means of the high-energy beam ( 34 ) is carried out. Device according to claim 10, characterized in that the device ( 10 ) one below the build platform ( 12 ) arranged and formed material reservoir ( 48 ) for the component material ( 22 . 38 ). Device according to claim 11, characterized in that the device ( 10 ) one in the material reservoir ( 48 ) arranged lifting and lowering device ( 20 ). Device according to one of claims 10 to 12, characterized in that the device ( 10 ) a coater for layering the powder layer ( 40 ). Device according to one of claims 10 to 13, characterized in that the device ( 10 ) at least one mechanical smoothing device ( 36 ) and / or at least one vibration device and / or at least one purge gas supply line and / or one between the material reservoir ( 48 ) and the coater or another material reservoir extending powder conductive compound. Component for a turbomachine, in particular compressor or turbine component, characterized in that it is at least partially or completely obtained by a method according to one of claims 1 to 9 and / or by means of a device according to one of claims 10 to 14.

Images