EP4225523A1 - Stratégie d'émission en fabrication additive à émission pulsée - Google Patents

Stratégie d'émission en fabrication additive à émission pulsée

Info

Publication number
EP4225523A1
EP4225523A1 EP21824486.1A EP21824486A EP4225523A1 EP 4225523 A1 EP4225523 A1 EP 4225523A1 EP 21824486 A EP21824486 A EP 21824486A EP 4225523 A1 EP4225523 A1 EP 4225523A1
Authority
EP
European Patent Office
Prior art keywords
irradiation
vectors
component
irradiated
additive manufacturing
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
Application number
EP21824486.1A
Other languages
German (de)
English (en)
Inventor
Timo HEITMANN
Jan Pascal Bogner
Ole Geisen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens Energy Global GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Publication of EP4225523A1 publication Critical patent/EP4225523A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B22F10/20—Direct sintering or melting
    • 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
    • B22F10/368—Temperature or temperature gradient, e.g. temperature of the melt pool
    • 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
    • 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
    • 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
    • B33Y50/00—Data acquisition or data processing for 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
    • 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
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/40—Radiation means
    • B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
    • B22F12/43—Radiation means characterised by the type, e.g. laser or electron beam pulsed; frequency modulated
    • 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
    • B22F2203/00—Controlling
    • B22F2203/05—Controlling thermal expansion
    • 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
    • B22F2203/00—Controlling
    • B22F2203/11—Controlling temperature, temperature profile
    • 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
    • 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 powder-bed-based, additive manufacturing of a component or a corresponding (computer-implemented) method for providing manufacturing instructions, for example by way of "computer-aided manufacturing”. Furthermore, a correspondingly manufactured component and an associated computer program (product) are specified.
  • the component is preferably intended for use in the hot gas path of a gas turbine.
  • the component relates to a component to be cooled with a thin-walled or filigree design.
  • the component can be a component for use in automobiles or in the aviation sector.
  • High-performance machine components are the subject of constant improvement, in particular to increase their efficiency in use. In the case of heat engines, in particular gas turbines, however, this leads, among other things, to ever higher operating temperatures.
  • the metallic materials and the component design of heavy-duty components, such as turbine rotor blades, especially in the first stages, are constantly being improved in terms of their strength, service life, creep resistance and thermomechanical fatigue.
  • additive manufacturing colloquially also referred to as 3D printing, to- include selective laser melting (SLM) or laser sintering (SLS), or electron beam melting (EBM) as a powder bed method.
  • SLM selective laser melting
  • SLS laser sintering
  • EBM electron beam melting
  • a method for selective laser melting with pulsed radiation is known, for example, from EP 3 022 008 B1.
  • Additive manufacturing methods have also proven to be particularly advantageous for complex or filigree components, 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 be carried out largely on the basis of a corresponding CAD file and the selection of corresponding manufacturing parameters.
  • Components manufactured in a conventional manner, for example by casting are significantly inferior to the additive manufacturing route, for example in terms of their freedom of design and also in relation to the required throughput time and the associated high costs and the manufacturing effort.
  • an irradiation strategy or scanning strategy in particular the lengthening of corresponding irradiation vectors, in particular hatching irradiation vectors, whereby a cooling time of the correspondingly irradiated powder can be increased and the thermal load can be reduced.
  • this may imply that thin-walled sections cannot be realized.
  • the spatially or temporally introduced heat input can be reduced by so-called "skywriting", whereby vectors of a raster-like irradiation are only mentally extended or an energy beam, such as a laser or electron beam, is switched off during the irradiation process.
  • the cooling time is also effective in this way
  • these approaches also impair process effi ciency In other words, the manufacturing process per irradiated layer takes significantly longer, which causes costs in terms of machine occupancy.
  • One aspect of the present invention relates to a method for powder bed-based, additive manufacturing of a component, comprising the definition of irradiation vectors for a layer (powder layer) to be selectively irradiated, for example via SLM or EBM, for the component, with irradiation vectors having a length below of about 1 mm are irradiated in a pulsed irradiation mode, with a pulse frequency below 3 kHz and a raster or scanning speed below 250 mm/s being selected and/or set.
  • the parameters described are preferably actually applied to individual irradiation vectors and not just to the respective layer to be irradiated as a whole.
  • a heat input into the powder material can be tailor-made or be adjusted so that there is still sufficient time to cool down individual melting baths, which result from the selective irradiation of the said irradiation vectors. This leads, so to speak, to reproducible structural results for the corresponding component layers and to the avoidance of excessive thermal distortion and/or a tendency to crack.
  • the exposure vectors are hatch exposure vectors. This type of vector affects the main part of the surfaces to be irradiated of a respective component layer, the hardening of which can then possibly only be completed by so-called contour irradiation (contour irradiation vectors).
  • irradiation vectors between 1 mm and 2 mm in length are also irradiated in a pulsed irradiation mode, but with a different pulse frequency above 3 kHz and a scanning speed above 250 mm/s can be selected.
  • This configuration also advantageously allows the advantages according to the invention to be implemented, since an excessive introduction of heat can also lead to a poor structural result (see above) in this length range.
  • higher scanning speeds namely >250 mm/s, can be used for a powder region to be correspondingly irradiated, this possibly with the same hatching spacing. In comparison to the lower-frequency and more slowly scanned irradiation, this also enables an increase in productivity with a lower energy supply and correspondingly reduced overheating (“hot spots”) in the structure of the component.
  • an irradiation parameter set that is ideally matched to the geometry of individual component sections can be specified, which increases the additive structure made possible in the first place by thin-walled structures. Since continuous irradiation operation is usually selected for component sections that are less susceptible to overheating, the present invention advantageously combines the usual continuous wave operation with pulsed irradiation operation for improved component properties.
  • a hatching spacing of the irradiation vectors is selected in such a way that an overlap of melt baths corresponding to directly adjacent irradiation vectors is between 30% and 50% of a melt bath width. Due to the overlap dimensioned in this way, on the one hand a surface-covering layer irradiation is achieved in an expedient manner and, on the other hand, the overlap of the melting baths or the distance between the irradiation vectors is advantageously adapted to the pulsed irradiation mode. This configuration is advantageous both for irradiation vectors below 1 mm Length as well as for those in a range between 1 mm and 2 mm in length.
  • the irradiation expediently takes place selectively either by a laser beam or an electron beam by way of the additive manufacturing process.
  • a further aspect of the present invention relates to a component which can be produced or produced according to the method described, the component being intended for use in the hot gas path of a turbomachine, in particular a stationary gas turbine, and having at least one thin-walled section, for example one section , which is particularly prone to thermal warping .
  • a further aspect of the present invention relates to a computer-implemented method for providing manufacturing instructions for the additive manufacturing of a component, comprising the determination of irradiation parameters, in particular the setting of the described pulse frequency and scanning speed in pulsed irradiation mode (see above).
  • the computer-implemented method is a CAM method (“Computer-Aided-Manufacturing”) or a part thereof.
  • Another aspect of the present invention relates to a computer program or Computer program product, comprising instructions which, when a corresponding program is executed by a computer, a data processing device or a control device for irradiation in an additive manufacturing system, cause these means to Set and/or set radiation parameters as described above.
  • a CAD file or a computer program product can be stored as (volatile or non-volatile) storage medium, such as e.g. B. 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 or included.
  • the provision can also be made, for example, in a wireless communication network by transferring a corresponding file with the computer program product.
  • a computer program product can be program code, machine code or include numerical control instructions, such as G-code and/or other executable program instructions in general.
  • the computer program product can also contain geometry data or design data in a three-dimensional format or included as CAD data or . include a program or program code for providing this data.
  • the term "and/or,” when used in a series of two or more items, means that each of the listed items can be used alone, or it can be any combination of two or more of the listed items be used .
  • Figure 1 shows a schematic representation of a powder bed-based, additive manufacturing process.
  • FIG. 2 shows a schematic perspective view of a component area.
  • Figure 3 indicates a schematic plan or. Cross-sectional view of a layer to be irradiated for a component according to the invention.
  • Figure 4 indicates a schematic plan or. Cross-sectional view of a layer to be irradiated for a component according to the invention.
  • FIG. 1 shows an additive manufacturing system 100 .
  • the production plant 100 is preferably designed as an LPBF plant and for the additive construction of parts or components from a powder bed.
  • the system 100 can in particular also relate to a system for electron beam melting.
  • the system has a construction platform 1 .
  • a component 10 to be produced additively is produced in layers on the construction platform 1 .
  • the powder bed is formed by a powder 6 which can be distributed in layers on the construction platform 1 by a coating device 3 .
  • each powder layer L has been applied—usually with a preset layer thickness t—areas of the layer L are selectively melted and then solidified according to the predetermined geometry of the component 10 with an energy beam 5, for example a laser or electron beam, from an irradiation device 2 .
  • the construction platform 1 is preferably lowered by an amount corresponding to the layer thickness L (compare the downward-pointing arrow in FIG. 1).
  • the thickness t is usually only between 20 ⁇ m and 80 ⁇ m, preferably 40 ⁇ m, so that the entire process can easily involve irradiating tens of thousands of layers.
  • the geometry of the component is usually defined by a CAD file ("Computer-Aided-Design"). After reading such a file into the manufacturing system 100, the process then first requires the definition of a suitable irradiation strategy, for example by means of the CAM, which also the component geometry is divided into the individual layers
  • the irradiation strategy usually includes the definition of a large number of irradiation or construction parameters, as is further explained here.
  • the component 10 can be a component of a turbomachine, for example a component for the hot gas path of a gas turbine.
  • the component can be a moving or guide vane, a ring segment, a burner part or a burner tip, a skirt, a shield, a heat shield, a nozzle, a seal, a filter, a mouth or lance, a resonator, a stamp or a Designate swirlers, or a corresponding transition, insert, or a corresponding aftermarket part.
  • Figure 2 shows schematically a component area, comprising a particularly filigree section A, d. H . advantageously a part of the component which is very thin or filigree in comparison to other component sections.
  • sections A regardless of whether they actually represent a tip of the component or a side wall, have a strong tendency towards mechanical distortion and/or cracking. Such distortions are not marked in FIG. 2 for the sake of simplicity.
  • Figure 3 shows a section or. a plan view of a layer L along the line AA, as indicated in Figure 2.
  • its additive construction requires in particular the determination of relatively short irradiation vectors, in particular hatching irradiation vectors Vh.
  • contour irradiation vectors Vc are drawn in, which border the hatching irradiation vectors Vh, for example in order to strengthen an edge region with reliable structure quality.
  • the present invention now proposes a method for the powder-bed-based, additive manufacturing of the component 10, according to which radiation vectors for a corresponding layer L to be irradiated are defined and/or irradiated in such a way that radiation vectors are less than 1 mm long in a pulsed Irradiation operation pw are irradiated, and with a pulse frequency below 3 kHz and a scanning speed below 250 mm / s are selected.
  • the irradiation vectors mentioned are preferably hatching irradiation vectors Vh.
  • FIG. 3 shows a hatching distance a of the irradiation vectors Vh, which is selected in such a way that an overlap of melt baths corresponding to directly adjacent irradiation vectors is between 30% and 50%.
  • Figure 4 shows a section or. a plan view of a layer L along the line BB, as indicated in Figure 2.
  • this sectional view does not sketch such a thin-walled or filigree area, so that corresponding hatching irradiation vectors Vh—compared to the depiction in FIG. 3—can be dimensioned somewhat longer without the structure to be constructed to thermally overload.
  • irradiation vectors Vh (compare edges left and right) also have a length between 1 mm and 2 mm, for example, and are therefore preferable are irradiated in a pulsed irradiation mode pw, with a pulse frequency f preferably above 3 kHz and a scanning speed v above 250 mm/s being selected here.
  • a continuous cw irradiation operation can be used in order to carry out the additive build-up process more efficiently in terms of time, for example.
  • the above-mentioned threshold values of 1 mm or 2 mm for the length of the corresponding irradiation vectors, which incidentally can also relate to the contour irradiation vectors Vc, can be particularly advantageous, since melt pool widths in the context described are expediently between 200 pm and 500 pm, and that Powder material may not fully solidify due to irradiation of a given vector before the nearest (neighboring) vector is exposed or irradiated.
  • the means described advantageously allow, in particular by matching the scanning speed, pulse parameters and the melting bath overlap or the hatching distance, to enable discrete cooling of the individual melting lenses or welding beads, and/or to optimize the energy input through the melting beam.
  • sections A in particular, as illustrated with reference to FIG. 2 are reliably protected against overheating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne un procédé de fabrication additive sur lit de poudre d'un élément (10), comprenant le réglage de vecteurs d'émission (Vh, Vc) pour une couche (L) à exposer pour l'élément (10), des vecteurs d'émission (Vh, Vc) étant émis sous une longueur de 1 mm lors d'une opération d'émission pulsée (pw) ; et une fréquence d'impulsion inférieure à 3 kHz et une vitesse de balayage inférieure à 250 mm/a étant sélectionnées. L'invention concerne également un élément fabriqué de manière correspondante, un procédé associé destiné à la fourniture d'instructions de fabrication, et un produit programme informatique associé.
EP21824486.1A 2020-12-22 2021-11-24 Stratégie d'émission en fabrication additive à émission pulsée Pending EP4225523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20216448.9A EP4019164A1 (fr) 2020-12-22 2020-12-22 Stratégie de rayonnement dans la fabrication additive par rayonnement pulsé
PCT/EP2021/082833 WO2022135817A1 (fr) 2020-12-22 2021-11-24 Stratégie d'émission en fabrication additive à émission pulsée

Publications (1)

Publication Number Publication Date
EP4225523A1 true EP4225523A1 (fr) 2023-08-16

Family

ID=73856787

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20216448.9A Withdrawn EP4019164A1 (fr) 2020-12-22 2020-12-22 Stratégie de rayonnement dans la fabrication additive par rayonnement pulsé
EP21824486.1A Pending EP4225523A1 (fr) 2020-12-22 2021-11-24 Stratégie d'émission en fabrication additive à émission pulsée

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20216448.9A Withdrawn EP4019164A1 (fr) 2020-12-22 2020-12-22 Stratégie de rayonnement dans la fabrication additive par rayonnement pulsé

Country Status (4)

Country Link
US (1) US20240051024A1 (fr)
EP (2) EP4019164A1 (fr)
CN (1) CN116635237A (fr)
WO (1) WO2022135817A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021129468A1 (de) 2021-11-11 2023-05-11 Trumpf Laser- Und Systemtechnik Gmbh Verfahren, Planungsvorrichtung und Computerprogrammprodukt zum Planen einer lokal selektiven Bestrahlung eines Arbeitsbereichs mit einem Energiestrahl, sowie Verfahren, Fertigungsvorrichtung und Computerprogrammprodukt zum additiven Fertigen von Bauteilen aus einem Pulvermaterial
DE102022126960A1 (de) 2022-10-14 2024-04-25 Siemens Energy Global GmbH & Co. KG Verfahren und Vorrichtung zur Wärmebehandlung eines additiv gefertigten Bauteils

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1418013B1 (fr) * 2002-11-08 2005-01-19 Howmedica Osteonics Corp. Surface poreuse produite par laser
EP2868422A1 (fr) 2013-10-29 2015-05-06 Siemens Aktiengesellschaft Procédé de fabrication d'une composant et dispositif de rayonnement optique
EP3520929A1 (fr) * 2018-02-06 2019-08-07 Siemens Aktiengesellschaft Procédé d'irradiation sélective d'une couche de matériau, procédé de fabrication et produit-programme informatique
DE102019205587A1 (de) * 2019-04-17 2020-10-22 MTU Aero Engines AG Schichtbauverfahren und Schichtbauvorrichtung zum additiven Herstellen zumindest einer Wand eines Bauteils sowie Computerprogrammprodukt und Speichermedium

Also Published As

Publication number Publication date
EP4019164A1 (fr) 2022-06-29
US20240051024A1 (en) 2024-02-15
CN116635237A (zh) 2023-08-22
WO2022135817A1 (fr) 2022-06-30

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