DE102018203877A1 - Method for generatively manufacturing components from material-hardened materials - Google Patents

Method for generatively manufacturing components from material-hardened materials Download PDF

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Publication number
DE102018203877A1
DE102018203877A1 DE102018203877.5A DE102018203877A DE102018203877A1 DE 102018203877 A1 DE102018203877 A1 DE 102018203877A1 DE 102018203877 A DE102018203877 A DE 102018203877A DE 102018203877 A1 DE102018203877 A1 DE 102018203877A1
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Prior art keywords
component
layers
heat treatment
solid
temperature
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DE102018203877.5A
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German (de)
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Johannes Casper
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MTU Aero Engines GmbH
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MTU Aero Engines GmbH
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Priority to DE102018203877.5A priority Critical patent/DE102018203877A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10Sintering only
    • B22F3/105Sintering only by using electric current other than for infra-red radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B22F3/1055Selective sintering, i.e. stereolithography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00Processes of additive manufacturing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00Auxiliary operations or equipment, e.g. for material handling
    • B33Y40/20Post-treatment, e.g. curing, coating or polishing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00Data acquisition or data processing for additive manufacturing
    • B33Y50/02Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F2202/00Treatment under specific physical conditions
    • B22F2202/07Treatment under specific physical conditions by induction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F5/00Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/009Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine components other than turbine blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00Materials specially adapted for additive manufacturing
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/04Making alloys by powder metallurgy
    • C22C1/0433Nickel- or cobalt-based alloys

Abstract

The present invention relates to a method for the generative production of a component of a precipitation-hardenable material, wherein by layering of powder material and cohesive bonding of powder particles with each other and / or with a substrate or a previously manufactured part of a component, the component by forming several superimposed arranged solid layers of the precipitation-hardenable material is constructed, wherein the solid state layers corresponding component sectional contours of the component and wherein the cohesive connection of the powder material by melting with a high-energy beam, wherein one or more of the deposited solid layers immediately after the deposition and / or before the deposition of a subsequent solid-state layer of a heat treatment at a temperature above the solution temperature, wherein at least one excretion the precipitation hardenable material goes into solution.

Description

  • BACKGROUND OF THE INVENTION
  • FIELD OF THE INVENTION
  • The present invention relates to a method for the generative production of components by layerwise joining of powder particles to one another and / or with an already produced semifinished product or substrate, in particular by selective interaction of the powder particles with a high energy beam, as in selective laser or electron beam melting, preferably a method by selectively irradiating a powder bed, wherein the material used for the production of the components is a material which is curable by producing precipitates in the material structure.
  • STATE OF THE ART
  • Generative manufacturing processes for manufacturing a device, such as selective laser melting (SLM), selective laser sintering, Direct Metal Laser Sintering (DMLS), selective electron beam melting, selective electron beam sintering, or hardfacing, especially laser deposition welding, where the device is layered using Powder material is used in the industry for the so-called rapid tooling, rapid prototyping or for the production of series products in the context of rapid manufacturing. An example of a method and a device for the additive production of components can be found in US Pat DE 10 2010 050 531 A1 ,
  • Generative manufacturing processes are fundamentally also of interest in the production of components of turbomachines, such as stationary gas turbines or aircraft engines, since the components of turbomachines sometimes have complex shapes, so that the expense and the costs of production can be reduced by generative manufacturing processes. However, with components of turbomachines, the problem is that such components require due to the complex requirement profile with resistance to high temperatures and aggressive environmental conditions and high mechanical loads and especially in aircraft engines additional requirements for low weight specially adjusted materials whose microstructure by generative process not or only difficult to produce. Nevertheless, it would be advantageous to be able to produce consuming components of turbomachines by generative manufacturing process.
  • From the prior art, in particular also generative manufacturing processes for the production of components of a turbomachine, such as components of an aircraft engine or a gas turbine are known, for example, in the DE 10 2009 051 479 A1 described method.
  • In this method, a corresponding component is produced by coating layers of at least one powdered component material on a component platform in the region of a buildup and joining zone as well as layer by layer and local melting or sintering of the component material by means of energy supplied in the region of the buildup and joining zone. The supply of energy takes place here via laser beams, such as CO 2 laser, Nd: YAG laser, Yb fiber laser and diode laser, or by electron beams. In the in the DE 10 2009 051 479 A1 described method, the produced component or the assembly and joining zone is further heated to a temperature just below the melting point of the component material by means of a zone furnace to maintain a directionally solidified or monocrystalline crystal structure.
  • From the WO 2017/053480 A1 For example, there is known an additive manufacturing process for producing a medical product from a nickel-containing metal alloy in which the generatively-produced product is subjected to aging heat treatment to increase the tensile strength of the manufactured component by the formation of precipitates.
  • From the DE 10 2004 022 385 A1 Also, an apparatus and a method for the rapid production of microbodies is known in which in addition to the selective melting or sintering of particles by means of laser beams, a magnetic field in the region of the assembly and joining zone for densifying the particles of the applied layers is provided. In addition, a radiant heater, which acts on the surface of the particles, for example in the form of powerful halogen lighting and heating of the component carrier is provided.
  • The DE 10201 3108111A1 describes a method for additive fabrication of a superalloy device wherein compressive stress treatment is applied to the surface of the final device. In addition, this document describes the beam guidance in selective laser melting. In addition, this document describes that in generatively produced components of nickel base superalloys, after shaping, a solution annealing treatment is performed followed by precipitation hardening. For the material CM 247 LC, for example, a solution annealing for 2 hours at 1260 ° C and a subsequent aging treatment for 20 hours at 871 ° C.
  • The WO 2008/071165 A1 again describes an apparatus and a method for repairing turbine blades of gas turbines by means of powder build-up welding, wherein a radiation source, such as a laser or an electron beam, is used for the build-up welding. At the same time, a heating device for heating the blade to be repaired is provided via an induction coil. The additional heating should counteract possible cracking.
  • Although it is thus known from the prior art to provide various measures, such as providing additional heating of the component in generative manufacturing processes, in which powder particles are melted or sintered by means of irradiation to form a component, and to realize this additional heating by means of inductive heating, there continue to exist To use such generative manufacturing methods for high temperature alloys that are not or difficult to melt or weld. In particular, corresponding methods for the generative production of components from high-strength high-temperature alloys, such as nickel-base superalloys, due to the required post-processing in the form of heat treatments are also very expensive.
  • DISCLOSURE OF THE INVENTION
  • OBJECT OF THE INVENTION
  • It is therefore an object of the present invention to provide a method in which complex components, in particular for gas turbines, can be produced efficiently with generative methods, wherein at the same time it can be ensured that the finished component has a corresponding property profile with sufficiently high mechanical strength and high temperature resistance. In particular, it is an object of the present invention to provide a method by which materials which are curable by precipitation hardening can be efficiently produced by generative processes.
  • TECHNICAL SOLUTION
  • This object is achieved by a method having the features of claim 1. Advantageous embodiments are the subject of the dependent claims.
  • In order to achieve the abovementioned object, in a method for the generative production of a component from a material that is curable by the formation of precipitates, the invention proposes one or more of the layered solid layers immediately after the deposition and / or before the deposition of a subsequent one or a plurality of subsequent solid layers of a heat treatment at a temperature above the solution temperature at which at least one precipitate that can be formed in the material, in solid solution in the material goes. By directly carrying out solution annealing for localized regions in the range of one or more last deposited solid layers, homogenization of the deposited solid layers can be realized, so that a subsequent solution annealing of the completely manufactured component can be dispensed with, thus reducing the processing times and the cost of a complete heating of the component to a solution annealing temperature can be avoided.
  • Although it is sufficient to carry out the heat treatment of the one or more last-deposited solid layers at a temperature at which at least one precipitate which can be produced in the material is present in solid solution, it is advantageous if a plurality of different types of precipitates which can be produced in the material, in solid solution. In particular, the heat treatment of the one or more finally deposited solid layers can be carried out at a temperature at which the precipitates, which represent the predominant proportion by volume of the precipitates in the material, are present in solid solution in the material.
  • The heat treatment can be carried out in particular at a temperature below the solidus temperature of the material, so that it is avoided that parts of the deposited solid layers melt again.
  • The heat treatment may begin immediately after the deposition of the one or more solid layers, ie immediately after solidification of the last deposited solid layer.
  • The heat treatment can be carried out until the completion of the deposition of one or more subsequent solid layers, which are then themselves subjected to a corresponding heat treatment. This means that the heat treatment of the one or more deposited solid layers can be carried out during the deposition of one or more subsequent solid layers or at least partially during the deposition of one or more subsequent solid layers can be made. Alternatively, however, it is also possible first to carry out the heat treatment of the last-deposited solid-state layers and to begin the deposition of a subsequent solid-state layer only after a part of the heat treatment or after completion of the heat treatment. The duration of the heat treatment can be in the range of a few seconds to a few minutes.
  • The heat treatment can be carried out in particular flat over the entire or at least a predominant part of the layer expansion of the one or more solid layers, so that over the areal dimension of the solid layers, so the length and width, as possible no temperature gradients are introduced by the heat treatment.
  • With regard to the thickness of the part of the already produced component which is subjected to solution heat treatment, however, the heat treatment may be limited to one or more solid layers arranged on the surface of the semifinished product, ie the last deposited solid layers. In this way, it is possible to limit the heat treatment time for the solution annealing treatment of the last or several last solid layers to short heat treatment times, so that the production process of the generative production can continue to be carried out quickly.
  • In the method, one or more solid-state layers can thus be repeatedly deposited and subsequently heat-treated above the solution temperature, after which one or more further layers are deposited after or during the heat treatment until the component to be produced is finished. At the end of the deposition process, the surface of the component may be remelted so that the material in a surface layer is remelted to further improve the homogenization and densification of the material deposited in the surface region. Even after such a remelting process, the remelted surface layer after solidification may in turn be subjected to a localized solution heat treatment for the area of the remelted surface layer.
  • In addition to the melting of the powder material and the bonding of the powder particles to each other and to a substrate or already produced semifinished product after solidification, the deposition of the individual or several solid-state layers may also comprise a remelting process in which the one or more deposited solid layers for homogenization and densification once again be melted. Accordingly, the heat treatment above the solution temperature for the single or multiple deposited solid state layers can only take place when the solid state layer is completely separated, that is to say, for example, after a remelting process. This means that a solid-state layer is first produced by melting the powder material, and the solid-state layer produced in this way is remelted once it solidifies by the layer being melted a second time. After this remelting, the heat treatment can then take place above the solution temperature, based on the one or more deposited solid state layers.
  • During the deposition of the solid state layers and / or during the heat treatment above the solution temperature, the substrate and / or an already produced part of the component (semifinished product) can be preheated, in order not to large temperature differences between the deposited solid layers or the molten bath in the deposition of the solid state layers and to produce the substrate or the already produced semi-finished product. In addition, the preheating in the heat treatment between the deposition of the solid layers allows easier heating of the one or more deposited solid layers to the temperature above the solution temperature, so that the heat treatment is simplified. The preheating temperature may be close to the solution temperature, preferably in a range of 150 ° C to 10 ° C, in particular 100 ° C to 50 ° C below the solution temperature.
  • The local heating of the one or more solid layers, which are subjected to the heat treatment above the solution temperature, can be carried out by means of inductive heating. In particular, for this purpose, one or more coils can be arranged, to which at least one, preferably two or more alternating voltages can be applied with different frequencies to the local limitation of the heating on the one or more deposited by the arrangement and operation of the coils with the AC voltages To realize solid state layers. The frequencies that are applied to the coils with AC voltage can be in the range of greater than or equal to 10 kHz.
  • The one or more coils for the inductive heating in the solution heat treatment of the individual deposited solid layers may be above the plane in which the last or last deposited solid layers are present, and / or it may be the at least one coil to the semi-finished already manufactured be arranged. The coils for inductive heating can also be arranged one inside the other or one after the other along the coil axis. It is only important that by the arrangement of the coils and / or the selection of the operating frequencies of the alternating voltages, the effective ranges of inductive heating in the range of one or more last deposited solid layers are to be subjected to a solution annealing.
  • After molding the component, ie, depositing all solid state layers and optionally reflowing a surface layer, the component may be directly subjected to an aging heat treatment to achieve adjustment of a desired morphology of the precipitates. However, it is no longer necessary to subject the entire component to a solution annealing treatment above a solution temperature.
  • In particular, nickel-base superalloys which have a high strength and high-temperature strength due to γ 'precipitations can be used for the process. Examples of such materials are MAR 247 and IN718.
  • list of figures
  • The accompanying drawings show in a purely schematic manner in FIG
    • 1 a schematic representation of an apparatus for the generative production of components using the example of selective laser melting and in
    • 2 a schematic representation of another device similar to the device 1 However, using a different coil arrangement for an inductive heat treatment is used.
  • EMBODIMENTS
  • Further advantages, characteristics and features of the present invention will become apparent in the following detailed description of embodiments, wherein the invention is not limited to these embodiments.
  • The 1 shows in a purely schematic representation of a device 1 as can be used, for example, for the selective laser melting for the generative production of a component. The device 1 includes a lift table 2 on whose platform a semi-finished product 3 is arranged, is deposited on the layered material to produce a three-dimensional component. For this purpose, by means of the slider 8th Powder, which is above a lifting table 9 in a powder supply 10 is in layers over the semifinished product 3 pushed and then by the laser beam 6 a laser 4 by melting with the already existing semi-finished product 3 connected. After complete application of a layer 5 becomes the lift table 2 according to the arrow 7 indicated movement possibility lowered to the slider 8th to be able to apply a new layer of powder.
  • The compound of the powder material in a powder layer 5 with the semi-finished product 3 done by the laser 4 depending on the desired contour of the component to be manufactured, so that any three-dimensional shapes can be generated. Accordingly, the laser beam becomes 6 over the powder bed 12 guided to melt by different impact points on the powder bed according to the contour of the three-dimensional component in the powder layer plane corresponding cutting plane of the component to be produced powder material and to connect with the already generated part of a component or an initially provided substrate materially. Here, the laser beam 6 by a suitable deflection unit over the surface of the powder bed 12 be guided and / or the powder bed could be compared to the laser beam 6 to be moved. By the mutual connection of the powder particles with each other and with a substrate or the previously produced semi-finished product 3 by melting and subsequent solidification of the powder material becomes a solid layer on the semifinished product 3 deposited so that the entire component can be built up layer by layer by repeatedly performing the process.
  • The powder bed 12 comprises powder particles of a material which is curable by the formation of precipitates. For example, the powder particles may be formed of a nickel-based alloy in which γ'-precipitates may be precipitated for the purpose of precipitation hardening. Examples of such materials are under the designations MAR M-247 or IN 718 known. Other precipitation-hardenable materials can also be used.
  • After the melting of the powder particles and the joining of the powder particles with each other and with the semifinished product or substrate arranged underneath, a further melting in the form of remelting of the powder material deposited on the semifinished product can be carried out in order to homogenize and densify the deposited material in the deposited solid layer to reach.
  • In addition, according to the invention, the last deposited solid state layer or more solid layers, which have been deposited last, by means of inductive Heating heated, preferably wherein the entire deposited solid state layer or the plurality of deposited solid state layer are heated in its entire dimension to a heat treatment temperature. The heat treatment is carried out limited to the thickness of the last deposited solid state layer or more lying on the processing surface solid state layers, but flat over a majority or preferably over the entire areal dimension of the solid state layer (s).
  • The heat treatment temperature is a temperature above the solution temperature at which the components contained in the material required to form the precipitates are dissolved in solid solution in the matrix of the material. Thereby, a further homogenization of the deposited material can be achieved and it can be ensured that a uniform fine distribution of precipitates can be produced, which give the component the desired strength. Since several different types of precipitates can be formed in a material which is curable by means of precipitates, it may be sufficient to carry out a heat treatment above a solution temperature at least one type of possible precipitates in solid solution and for the uniform, finely divided Formation of excretions is available. Preferably, however, the solution temperature is selected in a range in which there are a plurality of, and in particular the most voluminous, precipitates in solid solution.
  • In the case of nickel-base superalloys, for example, besides the γ "phase, which is based on the structure of Ni 3 Al, the formation of γ", δ and Laves phases as well as the precipitation of carbides, nitrides and borides may be considered. Accordingly, it is sufficient if the heat treatment is carried out at a solution temperature in which at least one of said precipitates is in solution. Preferably, however, the solution temperature is chosen so that the γ'-precipitates which are essential for the precipitation hardening are present in solid solution.
  • For heating the surface area, under which the last or the last deposited solid layers are arranged and on which the deposition of further solid layers takes place, is in the device which in the 1 for performing the method, a coil for inductive heating is arranged above the surface region. The sink 14 is with an AC source 13 connected, which can provide high-frequency alternating currents, for example, with frequencies in the range of 10 kHz or more. In particular, on the coil 14 Alternating currents are superimposed with several different frequencies, so that a locally limited heating of the surface region of the semifinished product 3 becomes possible, so that a surface heating of the one or more last deposited solid layers can be made over the entire surface.
  • The process of depositing one or more solid layers by applying powder particles, melting and optionally remelting them and subsequent heat treatment of the deposited solid layer (s) at a temperature above the solution temperature is repeated until the finished component is composed of a plurality of solid state layers. Finally, a remelting of the surface can also be carried out with a subsequent heat treatment of the remelted surface layer at a temperature above the solution temperature.
  • After the complete deposition of the solid state layers and thus the shaping of the component, however, it is no longer necessary to subject the entire component to a solution annealing treatment, since the corresponding homogenization and dissolution of precipitates has already taken place during the production of the individual solid state layers. Only a swelling heat treatment in which a one- or multi-stage heat treatment at temperatures well below the solution temperature influences the morphology of the precipitates, can be carried out at the end of the manufacturing process.
  • During the deposition of the solid state layer (s) and / or the heat treatment of the last deposited solid state layer (s), the substrate or the semifinished product 3 are preheated, so that the temperature difference between the molten powder or the solidified solid state layer (s) and the rest of the semifinished product or the substrate is reduced. Accordingly, a preheating of the semi-finished supports 3 or the substrate and the heat treatment of the last deposited solid state layer (s).
  • For preheating the substrate or semifinished product 3 For example, a separate heater may be used, such as a resistance heater 15 in the lift table 2 is arranged. However, other heaters or types of heating, which are a preheating of the substrate or the semi-finished product 3 allow, conceivable.
  • The preheating temperature of the substrate or semifinished product 3 can be selected in a range below the solution temperature, for example in a range of 150 ° C to 10 ° C or 100 ° C to 50 ° C below the solution temperature. This can be achieved by an additional surface heating of the surface area in the last applied solid state layer (s) in a simple manner, a temperature above the solution temperature.
  • The 2 shows a further embodiment of an apparatus for performing the method according to the invention, wherein in 2 only part of the device is shown. In the 2 The device shown is similar to the device 1 , wherein by means of a laser, a powder layer 5 on a semi-finished product 3 is selectively fused according to the component cross-section corresponding to the powder layer, to produce a new, deposited solid state layer. After depositing the solid state layer by selective laser melting, the last or more recently deposited solid state layers are inductively heat treated by inductive heating at a temperature above the solution temperature for the precipitates contained in the material. Instead of in 1 shown coil 14 the device according to 2 a coil assembly of two coils 14 and 15 which are arranged inside each other and both with the high frequency AC power source 13 are connected so that one or more high-frequency AC voltages can be applied to each coil, so that a targeted heat treatment in the surface region of the semifinished product 3 in the area of the last deposited solid state layer (s) can take place. This embodiment thus shows that by the appropriate choice of the number and the arrangement of the coils 14 . 15 and the operation of the coils specifically a local heat treatment in the surface region of the semi-finished product produced 3 can be carried out. In the embodiment shown the 2 is accordingly one of the coils, namely the coil 15 in an area around the semi-finished product 3 arranged around.
  • Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that the invention is not limited to these embodiments, but rather modifications are possible in the manner that individual features omitted or other combinations of features can be realized without departing from the scope of the appended claims. In particular, the present disclosure includes all combinations of the individual features shown in the various embodiments, so that individual features that are described only in connection with an embodiment can also be used in other embodiments or combinations of individual features not explicitly shown.
  • LIST OF REFERENCE NUMBERS
  • 1
    Device for selective laser melting
    2
    Lift table
    3
    Workpiece
    4
    laser
    5
    powder layer
    6
    laser beam
    7
    Movement of the lifting table
    8th
    pusher
    9
    Lift table
    10
    powder storage
    11
    casing
    12
    powder bed
    13
    High frequency AC source
    14
    Kitchen sink
    15
    Kitchen sink
    16
    resistance heating
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 102010050531 A1 [0002]
    • DE 102009051479 A1 [0004, 0005]
    • WO 2017/053480 A1 [0006]
    • DE 102004022385 A1 [0007]
    • DE 102013108111 A1 [0008]
    • WO 2008/071165 A1 [0009]

Claims (15)

  1. A process for the generative production of a component of a precipitation-hardenable material, wherein by layered application of powder material and cohesive bonding of powder particles with each other and / or with a substrate or a previously prepared part of a component in layers the component by forming a plurality of superposed solid layers of the precipitation hardenable Material is constructed, wherein the solid state layers correspond to respective component sectional contours of the component and wherein the cohesive connection of the powder material takes place by melting with a high-energy beam, characterized in that one or more of the deposited solid layers immediately after deposition and / or before the deposition of a subsequent solid state layer a heat treatment at a temperature above the solution temperature at which at least one precipitate of ausscheidun gskärtbaren material goes into solution.
  2. Method according to Claim 1 , characterized in that the heat treatment takes place at a temperature below the solidus temperature of the material.
  3. Method according to one of the preceding claims, characterized in that the heat treatment until the completion of the deposition of one or more subsequent solid layers.
  4. Method according to one of the preceding claims, characterized in that the heat treatment takes place simultaneously for the one or more solid layers over the entire layer extent.
  5. Method according to one of the preceding claims, characterized in that the heat treatment is limited to the one or more solid state layers.
  6. Method according to one of the preceding claims, characterized in that repeatedly deposited one or more solid state layers and subsequently heat treated above the solution temperature, wherein after or during the heat treatment, one or more further layers are deposited.
  7. Method according to one of the preceding claims, characterized in that the substrate and / or an already produced part of the component or the entire component are preheated, in particular to a temperature below the solution temperature, preferably to a temperature in the range of 150 ° C to 10 ° C, in particular 100 ° C to 50 ° C below the solution temperature.
  8. Method according to one of the preceding claims, characterized in that the local heating of the one or more solid state layers for the heat treatment above the solution temperature by means of inductive heating takes place.
  9. Method according to one of the preceding claims, characterized in that the induction excitation takes place by means of alternating voltage, which preferably has at least two different frequencies, wherein at least one coil (14) is provided, to which two or more alternating voltages with different frequencies are applied, or more Coils (14,15) are provided, in which for each part of the coils or for each coil individual AC voltages are applied, which are different from each other, and / or in which for a part of the coils or for all coils more AC voltages with different Frequencies are applied to one coil.
  10. Method according to one of the preceding claims, characterized in that the arrangement of coils (14, 15) for inductive heating and / or the selection of the frequencies of the alternating voltages is effected in such a way that the areas of effect of the inductive heating lie in the region of the one or more solid-state layers, wherein in particular at least one coil (14) is provided for inductive heating, which is arranged so that it is at least partially disposed above a plane below which the one or more solid layers for heat treatment lie, and / or at least one coil (14,15 ) is provided for inductive heating, which is arranged so that it is at least partially disposed around the component produced.
  11. Method according to one of the preceding claims, characterized in that at least two coils (14,15) are provided for inductive heating, which are arranged so that they are arranged one inside the other and / or successively along the coil axis.
  12. Method according to one of the preceding claims, characterized in that the layered application of solid layers by selective laser beam or electron beam melting, wherein in particular the application of the powder material via a powder bed takes place.
  13. Method according to one of the preceding claims, characterized in that after the deposition of the solid state layers and an optional remelting of a surface layer of the component with the exception of a local heat treatment of the remelted surface layer above the solution temperature, the component is not subjected to a solution annealing treatment as a whole.
  14. Method according to one of the preceding claims, characterized in that the component is subjected to completion of the manufacturing process of an aging treatment for setting a precipitation morphology.
  15. Method according to one of the preceding claims, characterized in that a nickel-base superalloy is selected as precipitation-hardenable material and the component to be produced is a component of a turbomachine.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004022385A1 (en) 2004-05-01 2005-11-24 Laserinstitut Mittelsachsen E.V. Molding apparatus for micro-components has molding chamber in which particles are sintered or melted by laser, permanent magnet or electromagnet being mounted around chamber or forming part of it and piston compressing powder
WO2008071165A1 (en) 2006-12-14 2008-06-19 Mtu Aero Engines Gmbh Device and method for the repair or production of blade tips of blades of a gas turbine, in particular of an aircraft engine
DE102009051479A1 (en) 2009-10-30 2011-05-05 Mtu Aero Engines Gmbh Method and device for producing a component of a turbomachine
DE102010050531A1 (en) 2010-09-08 2012-03-08 Mtu Aero Engines Gmbh Generatively producing portion of component, which is constructed from individual powder layers, comprises heating powder layer locally on melting temperature, forming molten bath, reheating zone downstream to the molten bath
DE102013108111A1 (en) 2012-08-06 2014-02-06 Materials Solutions Additive manufacturing
DE102015214994A1 (en) * 2015-08-06 2017-02-09 MTU Aero Engines AG A method of manufacturing or repairing a component and apparatus for manufacturing and repairing a component
WO2017053480A1 (en) 2015-09-21 2017-03-30 Confluent Medical Technologies, Inc. Superelastic devices made from nitihf alloys using powder metallurgical techniques
DE102017113780A1 (en) * 2016-06-30 2018-01-04 General Electric Company Subject and additive manufacturing process for manufacturing

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004022385A1 (en) 2004-05-01 2005-11-24 Laserinstitut Mittelsachsen E.V. Molding apparatus for micro-components has molding chamber in which particles are sintered or melted by laser, permanent magnet or electromagnet being mounted around chamber or forming part of it and piston compressing powder
WO2008071165A1 (en) 2006-12-14 2008-06-19 Mtu Aero Engines Gmbh Device and method for the repair or production of blade tips of blades of a gas turbine, in particular of an aircraft engine
DE102009051479A1 (en) 2009-10-30 2011-05-05 Mtu Aero Engines Gmbh Method and device for producing a component of a turbomachine
DE102010050531A1 (en) 2010-09-08 2012-03-08 Mtu Aero Engines Gmbh Generatively producing portion of component, which is constructed from individual powder layers, comprises heating powder layer locally on melting temperature, forming molten bath, reheating zone downstream to the molten bath
DE102013108111A1 (en) 2012-08-06 2014-02-06 Materials Solutions Additive manufacturing
DE102015214994A1 (en) * 2015-08-06 2017-02-09 MTU Aero Engines AG A method of manufacturing or repairing a component and apparatus for manufacturing and repairing a component
WO2017053480A1 (en) 2015-09-21 2017-03-30 Confluent Medical Technologies, Inc. Superelastic devices made from nitihf alloys using powder metallurgical techniques
DE102017113780A1 (en) * 2016-06-30 2018-01-04 General Electric Company Subject and additive manufacturing process for manufacturing

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