EP4058226A1 - Verfahren zum herstellen einer stützstruktur in der additiven herstellung - Google Patents
Verfahren zum herstellen einer stützstruktur in der additiven herstellungInfo
- Publication number
- EP4058226A1 EP4058226A1 EP21704416.3A EP21704416A EP4058226A1 EP 4058226 A1 EP4058226 A1 EP 4058226A1 EP 21704416 A EP21704416 A EP 21704416A EP 4058226 A1 EP4058226 A1 EP 4058226A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support structure
- component
- irradiation
- layers
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- 239000000654 additive Substances 0.000 title claims abstract description 26
- 230000000996 additive effect Effects 0.000 title claims abstract description 26
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- 238000000034 method Methods 0.000 claims description 41
- 238000010276 construction Methods 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 18
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 230000005855 radiation Effects 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 8
- 238000010894 electron beam technology Methods 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- 230000012447 hatching Effects 0.000 description 7
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/40—Structures for supporting workpieces or articles during manufacture and removed afterwards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/40—Structures for supporting workpieces or articles during manufacture and removed afterwards
- B22F10/47—Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
- B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/80—Data acquisition or data processing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/80—Data acquisition or data processing
- B22F10/85—Data acquisition or data processing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE 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
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/38—Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
- B22F10/385—Overhang structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/009—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine components other than turbine blades
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
- G05B19/4099—Surface or curve machining, making 3D objects, e.g. desktop manufacturing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the present invention relates to a method for the manufacture of a support structure in the additive manufacturing of a component or a novel irradiation strategy for the support structure. Furthermore, a corresponding computer program product, a device and a control are specified.
- the component is preferably intended for use in a flow machine, preferably in the hot gas path of a stationary gas turbine for generating energy.
- the component preferably consists of a superalloy, in particular a nickel- or cobalt-based superalloy.
- thermal energy and / or flow energy of a hot gas generated by the combustion of a fuel is converted into kinetic energy (rotational energy) of a rotor.
- a flow channel is formed in the gas turbine, in the axial direction of which the rotor or a shaft is mounted. If a hot gas flows through the flow channel, a force is applied to the rotor blades, which is converted into a torque acting on the shaft, which drives the turbine rotor, whereby the rotational energy can be used, for example, to operate a generator.
- the component can be another component, such as a high-performance component for aerospace or automotive applications.
- Additive manufacturing processes include, for example, as powder bed processes, selective laser melting (SLM) or selective laser sintering (SLS), or electron beam melting (EBM).
- Other additive processes are, for example, “Directed Energy Deposition (DED)” “Method, in particular laser deposition welding, electron beam or plasma powder welding, wire welding, metallic powder injection molding, so-called” sheet lamination "method, or thermal spraying method (VPS LPPS, GDCS).
- DED Directed Energy Deposition
- a method for selective laser melting is known, for example, from EP 2 601 006 Bl.
- Additive manufacturing processes have also proven to be particularly advantageous for complex or filigree construction parts, for example labyrinth-like structures, cooling structures and / or lightweight structures.
- additive manufacturing is advantageous due to a particularly short chain of process steps, since a manufacturing or manufacturing step of a component can largely take place on the basis of a corresponding CAD file (“Computer-Aided Design”) and, if necessary, the selection of corresponding manufacturing parameters.
- a computer program product - as described here - can be used, for example, as a (volatile or non-volatile) storage medium, such as a memory card, a USB stick, a CD-ROM or DVD, or also in the form of a downloadable file from a server and / or in a network provided or included. The provision can also take place, for example, in a wireless communication network by transmitting a corresponding file with the computer program product.
- a computer program product can contain program code, machine code or numerical control instructions such as G-code and / or other executable program instructions in general.
- support structures with an advantageously great freedom in the design of the achievable components. These become necessary as soon as an area to be supported or a critical overhang angle of a section of the component is undercut by, for example, 40 ° to the surface of a construction platform.
- support structures can also be required for mechanical support or fixing of a component in the installation space during the construction process, in order not only to achieve a certain construction result, but also to achieve mechanical detachment ( "Tear off”) of the component from the building platform. This can occur in particular with large components and strong mechanical or thermo-mechanical stresses in the built-up structure. Such stresses continue to occur primarily in the vertical direction, i.e. along a direction of construction of the structure.
- One aspect of the present invention relates to a method for producing a support structure in the additive, in particular special layer-wise, production of a component, for example based on a powder bed by selective laser melting or electron beam melting.
- the method comprises providing a geometry for the component with an area to be supported, for example an overhang.
- the geometry is usually provided via a CAD file (digital).
- the method further comprises the provision of a support structure for the area of the component to be supported, in particular for its mechanical support.
- a support structure for the area of the component to be supported, in particular for its mechanical support.
- support structures supporting at least one overhang also have the effect of dissipating heat significantly more efficient or - in contrast to loose powder, which is located under an overhanging structural area - can be done in the first place.
- the component geometry has overhangs.
- the method further comprises establishing an irradiation pattern for irradiating layers of a raw material, in particular powder, for the support structure and / or the component, with area or area irradiation vectors or hatching vectors (so-called "hatching") for irradiation of Layers for a structure of or for the component extend in a region of the support structure or are extended into this.
- a raw material in particular powder
- hatching hatching vectors
- the definition of the irradiation pattern as described in the present case can be done, for example, using CAM means (“Computer Aided Manufacturing”).
- the area of the support structure preferably represents a lateral area or surface area of the support structure, in particular in layers next to the actual component contour.
- the surface irradiation vectors mentioned describe preferably irradiation trajectories for inner regions of a layer to be irradiated.
- so-called contour radiation vectors are usually required for additive component manufacture in the context described, in particular in order to realize a contour of the component with the required structure or surface quality.
- the method further comprises the selective irradiation of layers of the raw material for the component and the provided support structure in accordance with the defined irradiation pattern.
- the said irradiation is expediently carried out powder bed based via SLM or EBM with a laser or electron beam and a corresponding control and / or optics.
- the described extension of the surface vectors into the region of the support structure can advantageously ensure that a temporal offset of the irradiation of the component region on the one hand and the region of the support structure on the other hand can be minimized.
- This advantageously brings about an improved structural connection between the two areas and the reduction of thermal stresses and / or structural defects that can arise from too high or too low an energy input and / or large inherent temperature gradients.
- Such an irradiation strategy for surface irradiation of individual layers in additive manufacturing cannot be mapped by conventional means, since when selecting an irradiation strategy for a support structure, for example, it is not possible to intervene in a corresponding irradiation for the component, and vice versa.
- the present invention advantageously offers the possibility that the component and a corresponding volume support can be output and / or irradiated as one and the same component when defining the required hatching vectors.
- the additive manufacturing process is a powder-bed-based process, for example selective laser melting or electron beam melting.
- the area to be supported or a tangent or surface tangent of this area encloses an angle of less than 40 ° to a building platform or its surface.
- the area to be supported represents a (relatively strong) overhanging area of the component which, for example, has to be mechanically and / or thermally supported during additive manufacturing. This was also the case described geometry around an area which is particularly suitable as a starting point for the support structure as a volume support. If the "support" or the support structure starts here, a stabilization of the entire built-up structure of the component and / or a tearing of the structure from the building platform due to a particularly strong state of tension can be prevented particularly expediently and advantageously.
- the support structure - as indicated above - represents a volume support.
- the volume support or the support structure are designed free from grids or latticework and / or free from toothing. This configuration enables a particularly robust and firm support of the area to be supported.
- the support structure is preferably also formed from solid material, which can only have a slight porosity.
- common hatching vectors are defined for the component and for the support structure.
- a strategy for irradiating the contour of the component is preferably different from the exposure of the support structure.
- the irradiation for the layers of the support structure is carried out free of contour vectors.
- This configuration advantageously enables the process to be carried out efficiently in terms of time and dispenses with the need for costly contour exposure in the manufacture of the "support” This means that the construction of large components can take several days or even weeks to complete in an additive manner.
- irradiation speeds can be continuously optimized or adjusted, the construction of many 1,000 up to several 10,000 layers, for example a layer thickness of 20 mpi to 40 mpi, requires many millions of individual irradiation paths or vectors for a corresponding structure.
- a volume of the component according to the geometry provided includes at least 20% of the construction space of a corresponding manufacturing plant or device.
- the component represents a relatively large-volume component which, in particular during manufacture, tends to detach itself from a building platform, at least in sections, due to thermomechanical stress.
- the support structure is produced in such a way that one or more layers in a layer sequence of the additive structure are omitted. For example, one, two, three, four, five, ten or fifty layers can be omitted accordingly.
- This implementation can also be advantageous in order to carry out the construction of the support structure more efficiently in terms of time and, at the same time, to achieve sufficient stability or support effect.
- further irradiation parameters such as laser power
- a more efficient construction of the support structures can be achieved, the mechanical stability of which is then hardly impaired in relation to proper irradiation of each individual layer.
- the support structure - in contrast to the structure of the component - is carried out with changed irradiation parameters, such as an irradiation power or irradiation speed.
- the layers for the support structure are carried out at an increased irradiation speed. This advantageously also allows a more time-efficient additive build-up process.
- the layers for the support structure are irradiated with an adapted irradiation power, preferably an increased irradiation power in connection with the embodiment described above, in which irradiation of individual layers is omitted.
- Another aspect of the present invention relates to a computer program or computer program product, comprising commands that, when a corresponding program is executed by a computer, cause the computer to carry out at least the described steps of providing, providing the support structure and defining the irradiation pattern.
- Another aspect of the present invention relates to a device comprising at least one irradiation device which is set up to irradiate layers for the component and the support structure in accordance with the defined irradiation pattern.
- Another aspect of the present invention relates to a controller which is set up to control an irradiation device for selectively irradiating layers of the raw material in accordance with the defined irradiation pattern.
- FIG. 1 shows a schematic sectional or side view of a component during its additive manufacture from a powder bed.
- FIG. 2 shows a schematic sectional or side view of a geometry of a component to be produced additively.
- FIG. 2 shows a schematic sectional or side view of a geometry of a component to be produced additively.
- FIG. 2 shows a schematic sectional or side view of a geometry of a component to be produced additively.
- FIG. 2 shows a schematic sectional or side view of a geometry of a component to be produced additively.
- FIG. 2 shows a schematic sectional or side view of a geometry of a component to be produced additively.
- cross-sections of the additive structure irradiation patterns for the production of the component and / or a support structure are indicated.
- FIG. 3 schematically indicates an exemplary embodiment of an irradiation strategy for the component and the support structure.
- FIG. 4 shows a schematic flow diagram, indicating method steps according to the invention.
- FIG. 1 shows an additive manufacturing system or manufacturing device 100.
- the manufacturing system 100 is preferably designed as an LPBF system and for the additive construction of structural parts or components from a powder bed.
- the system 100 can in particular also relate to a system for electron beam melting.
- the device accordingly has a construction platform 1.
- a component 10 'to be produced additively is made of a layer by layer Powder bed made.
- the latter is formed by a powder P which can be distributed in layers on the building platform 1 by a coating device 30.
- regions of the corresponding layer are selectively applied using an energy beam 21, for example a laser or electron beam, from an irradiation device 20 and / or a corresponding controller (cf. . Reference numeral 50) melted and then solidified.
- an energy beam 21 for example a laser or electron beam
- the building platform 1 is preferably lowered by an amount corresponding to the layer thickness L (compare arrow pointing downwards in FIG. 1).
- the layer thickness L is usually only between 20 gm and 40 gm, so that the entire process can easily require irradiation of a number of 1,000 up to several 10,000 layers.
- the geometry of the component is usually provided by a CAD file (see FIG. 4 below).
- the process usually first requires the definition of a suitable irradiation strategy, for example by means of CAM ("Computer-Aided Manufacturing"), which normally also means that the component geometry is divided into the individual layers Ln he follows.
- CAM Computer-Aided Manufacturing
- the manufacturing complexity of the component is usually not always the same.
- a support structure 11 ' is shown, which must support an overhanging area of the component both mechanically and thermally.
- Such overhanging areas are particularly critical because there a molten bath (not explicitly marked), the dimensions of which usually extends over several, for example 5 layer thicknesses, extends downward into a loose powder area.
- FIG. 2 shows parts of a component 10 to be produced additively, which is built up with means of the present invention or provided with a support structure.
- a support structure for the component is correspondingly irradiated by the present invention.
- the component 10 has an area 10a to be supported.
- the area 10a can be an area partially hanging over the building platform 1.
- it can also be an area with a vertical or only slightly overhanging wall (so-called “inskin” area), which requires increased mechanical support during construction, for example to "tear off” the component from Avoid building platform 1.
- a so-called beam offset is usually adjusted or enlarged during process preparation. This can also increase the volume of the support structure and, under certain circumstances, lead to greater overlap and merging between layers of a support structure and the actual component.
- this measure has the disadvantage, among other things, that the area to be illuminated is also enlarged, and thus more material or volume is required, and the construction or process time is extended.
- the component 10 is preferably a complex-shaped component made of a high-performance material, for example a component that is thermally highly stressed and is used, for example, in the automotive sector or in the aerospace sector.
- the component 10 is particularly preferably a component of the hot gas path of a turbomachine, such as a stationary gas turbine, for example.
- the component can be a rotor or guide vane, a ring segment, a burner part or a burner tip, a frame, a shield, a heat shield, a nozzle, a seal, a filter, an orifice or lance, a resonator, a stem or denote a swirler, or a corresponding transition, insert, or a corresponding retrofit part.
- the volume of the component 10 described can, for example, still occupy at least 10%, 20%, 30% or 40% of the installation space of a corresponding manufacturing device 100.
- An overhang angle is also shown in FIG. 2, which is preferably less than 50 °, particularly preferably less than 40 °, relative to a surface of the building platform 1 or a horizontal one.
- the advantages according to the invention are particularly clear in this angular range.
- the proposed irradiation strategy has an advantageous effect on the areas to be supported even at angles greater than the aforementioned or less overhanging structures.
- the region 10a to be supported is therefore provided with a support structure 11 in the present case.
- the support structure is preferably a so-called “volume support”, in particular without cavities, lattice structures or toothing.
- the support structure 11 is not structurally connected to the component 10 directly at the transition to the building platform 1.
- the structures of component 10 and support structure 11 in the example shown converge to a point along the direction z, in which they connect (compare dashed horizontal line). From this point, the overhang of the component also extends in accordance with its specified geometry.
- the dashed line which indicates the point mentioned corresponds here, for example, to the thirtieth built-up layer L30. the overhang of the area to be supported 11 it extends in the example described further up to a layer L60, which corresponds, for example, to the sixtieth built-up layer.
- FIG. 2 At the bottom right in FIG. 2 is a plan view of a layer plane of the built-up structures according to section AA of the illustration on the left. Since the structure of the component according to a predetermined geometry is not yet materially connected to the support structure at this point in time, two separate layer cross-sections or layers are indicated on this. Even if the right part of the illustration is merely a schematic indication of a geometry and a corresponding irradiation pattern for it, for the sake of simplicity the layers shown are labeled with the reference “10” for the component and “11” for the support structure . On the left in the layer plan, hatching vectors or surface irradiation vectors Vh are indicated for the irradiation or build-up result covering the area as possible.
- Contour radiation vectors Vk are shown on a contour of the layer or the hatching vectors Vh including.
- An edge area of the built-up component structure is to be improved with regard to its structure and surface via a corresponding contour irradiation - usually downstream of the surface irradiation.
- FIG. 2 At the top right in FIG. 2 is a plan view of a layer plane of the built-up structures according to section B - B of the illustration on the left.
- This representation corresponds to an irradiation variant according to the invention, according to which the support structure 11 can preferably be constructed in the present case.
- the surface irradiation vectors for the structure of the component or a corresponding irradiation pattern M have been established in such a way that they extend into an area of the support structure (to the right) or into it were or form common surface irradiation patterns.
- the technical advantages according to the invention described in the present invention can be achieved.
- the support structure 11 at the top right in the illustration in FIG. 2 is preferably irradiated in the same process step with the correspondingly adjacent layer for the component in the area.
- the irradiation of the support structure is preferably carried out without any contour vectors. Therefore, contour radiation vectors Vk are only drawn in the left section of the top view shown.
- FIG. 3 shows a schematic plan view of a layer to be irradiated or a digital model of the same, which partly includes a component area (left) and an area of the support structure 11 (right).
- a single surface irradiation vector is indicated as a diagonal arrow.
- a transition between the construction part 10 and the support structure 11 is indicated by a vertical line.
- the present invention proposes, by way of example, that the support structure 11 - in contrast to the structure of the component 10 - be irradiated with changed irradiation parameters.
- layers for the support structure 11 can be irradiated with an increased irradiation speed v.
- the reference symbol v indicates a radiation speed for the corresponding point.
- the support structure 11 can be produced in such a way that one or more layers Ln in a layer sequence are only omitted for the support area, but are regularly irradiated, for example in the area of the component geometry.
- those layers for the construction of the support structure 11, which are actively irradiated are then irradiated with an adapted, in particular increased irradiation power p, in order to remove the powdery layer areas underneath, which were spared from the irradiation, to melt.
- an increased radiation power or power density also causes a deeper melt pool, which extends downwards, for example, over more than 5 layer thicknesses, and thus also reaches the loose powder areas.
- irradiation parameters can of course be adjusted - either in the component area or in the area of the support structure.
- the parameters mentioned can be, for example, the layer thickness L, a melt bath depth, a radiation power introduced, a laser wavelength, a so-called hatching distance of individual surface irradiation vectors, a beam offset, an irradiation speed, a beam focus, an irradiation angle or other parameters, such as the inert gas used for the irradiation or relate to other environmental conditions, such as an ambient pressure, or the like.
- FIG. 4 shows a schematic flow diagram which indicates and summarizes method steps according to the invention.
- the method described is a method for producing the supporting structure described, or specifying a corresponding irradiation strategy for it.
- the method comprises a) providing the geometry for the component 10 with the region 10a to be supported.
- the method further comprises, b), the provision of the support structure 11 for the region 10a of the component 10.
- the method further comprises, c), determining the radiation pattern M for the irradiation of the powder layers Ln of a raw material P for the support structure 11, surface irradiation vectors Vh for an irradiation for a structure of the component 10 in the (lateral) area of the support structure 11 extend into it.
- the mentioned vectors meet common area vectors for the component 10 and for the support structure 11.
- the method further comprises, d), the selective irradiation of layers Ln for the component 10 and the intended Support structure 11 according to the specified irradiation pattern M, as described above.
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- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Automation & Control Theory (AREA)
- Powder Metallurgy (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102020201450.7A DE102020201450A1 (de) | 2020-02-06 | 2020-02-06 | Verfahren zum Herstellen einer Stützstruktur in der additiven Herstellung, Computerprogrammprodukt und Steuerung |
PCT/EP2021/051608 WO2021156087A1 (de) | 2020-02-06 | 2021-01-25 | Verfahren zum herstellen einer stützstruktur in der additiven herstellung |
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EP4058226A1 true EP4058226A1 (de) | 2022-09-21 |
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EP21704416.3A Pending EP4058226A1 (de) | 2020-02-06 | 2021-01-25 | Verfahren zum herstellen einer stützstruktur in der additiven herstellung |
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US (1) | US20230056383A1 (de) |
EP (1) | EP4058226A1 (de) |
CN (1) | CN115052699B (de) |
DE (1) | DE102020201450A1 (de) |
WO (1) | WO2021156087A1 (de) |
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DE102022100701A1 (de) | 2022-01-13 | 2023-07-13 | Amsis Gmbh | Verfahren zur additiven Herstellung eines wenigstens einen überhängenden Abschnitt aufweisenden dreidimensionalen Objekts |
CN118180411B (zh) * | 2024-05-16 | 2024-08-23 | 临沂大学 | 一种基于数据分析的智能增材制造流程控制方法及系统 |
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EP2415552A1 (de) | 2010-08-05 | 2012-02-08 | Siemens Aktiengesellschaft | Verfahren zur Herstellung eines Bauteils durch selektives Laserschmelzen |
EP2848335A1 (de) * | 2013-09-17 | 2015-03-18 | SLM Solutions GmbH | Verfahren und Vorrichtung zur Reparatur einer Komponente |
DE102013218760A1 (de) | 2013-09-19 | 2015-03-19 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum schichtweisen Herstellen eines Bauteils |
US10786865B2 (en) * | 2014-12-15 | 2020-09-29 | Arcam Ab | Method for additive manufacturing |
EP3127635A1 (de) * | 2015-08-06 | 2017-02-08 | TRUMPF Laser-und Systemtechnik GmbH | Zusatzstoffherstellung von down-skin-schichten |
GB201515386D0 (en) * | 2015-08-28 | 2015-10-14 | Materials Solutions Ltd | Additive manufacturing |
DE102016224060A1 (de) | 2016-12-02 | 2018-06-07 | Siemens Aktiengesellschaft | Verfahren zur additiven Herstellung eines Bauteils mit Stützstruktur und reduzierter Energiedichte |
JP6807758B2 (ja) * | 2017-01-17 | 2021-01-06 | 株式会社ミマキエンジニアリング | 三次元造形装置及び三次元造形方法 |
EP3354632A1 (de) * | 2017-01-25 | 2018-08-01 | Siemens Aktiengesellschaft | Verfahren zur herstellung eines generativ gefertigten faserverstärkten keramischen matrixverbundwerkstoffs |
DE102017202843B3 (de) * | 2017-02-22 | 2018-07-19 | SLM Solutions Group AG | Verfahren und Vorrichtung zum Steuern eines Bestrahlungssystems zur Werkstückherstellung |
DE102017108534A1 (de) * | 2017-04-21 | 2018-10-25 | Eos Gmbh Electro Optical Systems | Kontrolle eines additiven Fertigungsprozesses |
EP3425461A1 (de) | 2017-07-07 | 2019-01-09 | Siemens Aktiengesellschaft | Verfahren zum erstellen von anweisungen zum additiven herstellen eines werkstücks, computerprogrammprodukt zur durchführung dieses verfahrens und verfahren zum additiven herstellen eines werkstücks |
EP3459654B1 (de) * | 2017-09-22 | 2020-02-19 | SLM Solutions Group AG | Verfahren und vorrichtung zur herstellung eines einkristallinen werkstücks |
DE102017127148A1 (de) * | 2017-11-17 | 2019-05-23 | Eos Gmbh Electro Optical Systems | Bestrahlungsstreifensortierung |
EP3542927A1 (de) * | 2018-03-20 | 2019-09-25 | Siemens Aktiengesellschaft | Verfahren zum selektiven bestrahlen einer materialschicht, verfahren zum bereitstellen eines datensatzes, vorrichtung und computerprogrammprodukt |
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- 2021-01-25 WO PCT/EP2021/051608 patent/WO2021156087A1/de unknown
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WO2021156087A1 (de) | 2021-08-12 |
CN115052699A (zh) | 2022-09-13 |
CN115052699B (zh) | 2024-03-08 |
DE102020201450A1 (de) | 2021-08-12 |
US20230056383A1 (en) | 2023-02-23 |
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