EP4021667A1 - Outillage de fabrication additive par fusion laser avec boucliers anti-turbulences - Google Patents
Outillage de fabrication additive par fusion laser avec boucliers anti-turbulencesInfo
- Publication number
- EP4021667A1 EP4021667A1 EP20775386.4A EP20775386A EP4021667A1 EP 4021667 A1 EP4021667 A1 EP 4021667A1 EP 20775386 A EP20775386 A EP 20775386A EP 4021667 A1 EP4021667 A1 EP 4021667A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- powder
- shields
- melting
- tool
- 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
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
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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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
- 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
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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
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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
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
- B22F10/322—Process control of the atmosphere, e.g. composition or pressure in a building chamber of the gas flow, e.g. rate or direction
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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
- B22F10/70—Recycling
- B22F10/73—Recycling of powder
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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
- B22F10/80—Data acquisition or data processing
- B22F10/85—Data acquisition or data processing for controlling or regulating additive manufacturing processes
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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
- 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
- B22F12/22—Driving means
- B22F12/224—Driving means for motion along a direction within the plane of a layer
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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
- 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
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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
- 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
- B22F12/60—Planarisation devices; Compression devices
- B22F12/67—Blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/264—Arrangements for irradiation
- B29C64/268—Arrangements for irradiation using laser beams; using electron beams [EB]
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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
- B33Y10/00—Processes of 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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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
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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
- 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
- B22F12/46—Radiation means with translatory movement
- B22F12/47—Radiation means with translatory movement parallel to the deposition plane
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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
- 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
- B22F12/70—Gas flow means
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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
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/10—Inert gases
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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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- 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
- TITLE LASER FUSION ADDITIVE MANUFACTURING TOOLS WITH ANTI-TURBULENCE SHIELDS
- the present invention relates to additive manufacturing processes by laser fusion, in particular in the aeronautical field.
- Additive manufacturing is defined as the process of shaping a part by adding material, as opposed to traditional shaping which proceeds by removing material (machining).
- Additive manufacturing has many advantages, in particular it makes it possible to manufacture very complex shapes, some of which cannot be achieved with conventional processes, and with a wide variety of materials. This also makes it possible to produce monobloc parts, that is to say parts without assembly. Manufacturing times are also interesting for mass production of parts because no tools are required. Depending on the parts, additive manufacturing can allow a significant reduction in manufacturing costs and a simplification of the overall process (eg elimination of certain heat treatments, no multiple turning and / or milling operations).
- additive manufacturing in laser fusion is a process which consists in aggregating by selective fusion, in an enclosure under neutral gas, the particles of a powder bed (see Figures 1 and 2).
- This powder bed is set up on a construction platform. Melting is done by means of a laser beam which sweeps the surface of the powder bed and melts the powder on a determined section (by prior modeling, for example), called the melting zone. After solidification of the molten part of the powder bed, the construction platform is lowered to be able to spread a new powder layer of predetermined thickness. The laser scans the surface of the powder again to create an additional section superimposed on the previous layer.
- the piece in three-dimensional (3D) is a kind of stack of two-dimensional (2D) plane strata.
- the laser fusion process consists of fusing a layer of powder via a laser beam on a given surface and vertically incrementing the position of the plate to obtain a 3D shape.
- a tool 10 forming a specific machine comprising in particular three powder tanks 12, 14, 16 (one for the powder reserve, one for the melting and one for the surplus), a head laser 18, a mobile scraper 20 and an argon projection system 22 comprising at least one gas flow grid of the projection system 22 (see FIG. 2).
- the laser sources present in the fusion machines are conventionally of the Nd: YAG type fiber fibers with a wavelength of 1064 nm, with powers ranging from 50 to 1000 W, and used in continuous mode.
- Nd YAG comes from the English name: neodymium-doped yttrium aluminum garnet or, in French, neodymium-doped yttrium-aluminum garnet (Nd: Y3AI5012) is a crystal used as an amplifying medium for lasers using solid media.
- the beams are generally Gaussian or, more recently, uniform on some 1000 W lasers. On some equipment, it is possible to find up to four laser sources working simultaneously.
- the manufacture is carried out under a controlled atmosphere of argon (Ar) or dinitrogen (N2).
- Ar argon
- N2 dinitrogen
- the choice of protective gas is defined by the type of material used.
- the invention proposes a tool for additive manufacturing by laser fusion, the tool comprising a laser head intended to emit a laser beam defining a longitudinal axis, a first, a second and a third trays respectively aligned on a first transverse plane substantially perpendicular to the longitudinal axis, the second tray being located between the first tray and the third tray, the three trays each comprising a movable tray along the longitudinal axis, each tray being intended to receive a thickness of powder the free ends of which define three powder beds aligned on a second transverse plane, the tool further comprising a movable scraper intended to move on a third plane transverse to the surface of the tanks so as to be in contact with each of the beds of powder.
- the tool according to the invention can include one or more of the characteristics and / or steps below, considered alone or in combination with each other:
- the first tank is a powder reserve
- the second tank is a laser melting tank
- the third tank is a surplus powder tank
- the laser beam is intended to be emitted in the direction of the powder bed of the second tank so as to create an impact zone of the laser beam on said powder bed, the first and second shields being located, in the melting position, transversely on either side of the impact area, in the direct vicinity of the impact area,
- the laser head is mobile, and the first and second shields move in correlation with the laser head,
- the tool comprises an inert gas projection system comprising at least one gas flow grid and in that the first and second shields comprise movable walls having a depth as measured along an axis perpendicular to the longitudinal axis and parallel to the second plane, at least equal to that of the second tank and a height along the axis at least equal to that of the at least one gas flow grid.
- a further subject of the invention is also an additive manufacturing process by laser fusion implemented by means of the tooling described above, characterized in that a part is manufactured by a succession of melting phases and phases.
- the laser head is activated and the laser beam impacts the powder bed of the second tank creating an impact zone in which the powder is melted;
- the trays of the trays move one notch along the longitudinal axis moving away from or approaching the laser head, the first and second shields move from their position of fusion to their refill position, the movable scraper moves from its melting position to its refill position so as to wipe the unmelted powder from the powder bed of the second tank then returns to its melting position, and the first and second shields return to their fusion position.
- the method may include a phase of filling the first tank preceding the cycle of succession of melting and recharging phases, and a phase of withdrawal of the part follows the cycle of successions of melting and recharging.
- Figure 1 is a diagram of the different stages of additive manufacturing by laser fusion of any part
- Figure 2 is a schematic cross-sectional view of a laser fusion additive manufacturing machine
- Figure 3 is a schematic cross-sectional view of an additive manufacturing tool by laser fusion according to the state of the art
- Figure 4 is a schematic cross-sectional view of the tool according to the invention in the fusion position
- Figure 5 is a schematic cross-sectional view of the tool according to the invention in the recharging position.
- a tool 10 for additive manufacturing by laser fusion operates along a longitudinal axis X, parallel to the axis of the laser beam L used. Indeed, the part to be manufactured is produced step by step along this X axis and the tool 10 comprises various movable parts moving along this X axis or in various planes perpendicular to it.
- Tool 10 conventionally comprises, within a sealed tank intended to receive an inert gas such as argon (Ar) or dinitrogen (N2), three powder tanks 12, 14, 16 aligned in a substantially perpendicular plane to the longitudinal axis X. They are therefore aligned along a first transverse plane. Each tank (12, 14, 16) has a free surface facing a laser head 18.
- the first tank 12 is a tank intended to receive a laser head. powder reserve, the second tank 14 is intended to form the melting tank, and the third tank 16 is intended to receive any excess powder.
- the second tank 14 is located between the first tank 12 and the third tank 16,
- the inert gas is injected into the sealed tank by means of the gas flow grids of the projection system 22.
- These grids conventionally have a rectangular shape with a length perpendicular to the X axis much greater than the height, parallel to the. X axis.
- Each tank (12, 14, 16) is therefore intended to receive a thickness of powder, the free surface of which forms three powder beds aligned on a second transverse plane.
- This second transverse plane is located, on the longitudinal axis X, between the laser head 18 and the first transverse plane.
- the melting tank is the part of the tool 10 in which the manufacture of the part as such takes place: it is on the powder bed of this second tank 14 that the laser beam L, when the laser head 18 is activated, impacts the powder and melts it, so as to create, layer by layer, the part to be manufactured.
- the tool 10 further comprises a movable scraper 20 and an argon projection system 22 as illustrated in Figure 2.
- each tank 12, 14, 16 has four walls extending along the longitudinal axis X.
- the four walls encircle a movable plate 24, 26, 28 forming the bottom of the tank. each bin.
- Each movable platen 24, 26, 28 is movable along the longitudinal axis X.
- the displacement delta of each platen 24, 26, 28 is equal to or greater than the height of the manufactured part.
- Each tank 12, 14, 16 has, facing the bottom, a free, open end.
- the movable scraper 20 is a plate circulating along a third transverse plane located on the free surface of the three tanks 12, 14, 16. This third transverse plane is located on the longitudinal axis X between the laser head 18 and the second plan, in direct contact with the three powder beds of the three tanks 12, 14, 16.
- powder is placed in the first tank 12.
- Each plate 24, 26, 28 is thus intended to receive a thickness of powder whose free surface defines, for each tank 12 , 15, 16 its bed of powder.
- the tool 10 further comprises two movable shields 30, 32. These shields 30, 32 have a plate structure and are actuated by the electronic control system of the tool 10. According to one possible embodiment, the two movable shields 30, 32 are mechanically linked to the scraper 20 which is also set in motion by the electronic control system for the tool 10.
- This plate has a depth as measured along an axis perpendicular to the X axis and parallel in the second plane identical to that of the tank 14 and a height, along the X axis, at least equal to that of the gas flow grids of the projection system 22. They circulate transversely on the surface of the three tanks 12, 14, 16 , in the same transverse plane as the mobile scraper 20.
- a laser beam L is emitted and impacts the powder bed of the second tank 14. This impact zone 34 forms a powder melting zone.
- the melting area of the circle formed by the impact zone 34 is defined as the area over which the gas flow is laminar without turbulence. .
- the area outside the circle of impact zone 34 is the area where the many turbulences are generated that we are talking about protecting our here.
- the argon (Ar) projection system emits a laminar flow of argon (Ar) in the direction of the impact zone 34. This makes it possible to protect the fusion so as to: eliminate the particles of powder from the first and third tanks 12, 14 which could be redeposited on the part of the bed of freshly fused powder, and
- fusion phase is used to refer to the phase during which the laser head 18 is activated.
- recharging phase is used to refer to the phase during which the laser head 18 is switched off and during which the bed of powder of the second tank 14 is renewed.
- the movable shields 30, 32 and the mobile scraper 20 are in a melting position and during the recharging phase, the mobile shields 30, 32 and the mobile scraper 20 are in a recharging position.
- the fusing position of the movable shields 30, 32 is a position in which the first shield 30 is located between the inner transverse end 12a of the first pan 12 and the center of the second pan 14 and the second shield 32 is located between the center of the second tank 14 and the internal transverse end of the third tank 16.
- the first shield 30 is located between the first tank 12 and the second tank 14.
- the position refill shields 30, 32 is a position in which the two shields 30, 32 are located at a transverse end of the set of three bins 12, 13, 14. In this case, they are located at the transverse end of the third tank 16 and more particularly an external transverse end 16b of the third tank 16 opposite the internal transverse end 16a of the third tank 16.
- the recharging position represents a second position of the shields m obiles 30, 32. Movable shields move between the first and second positions.
- the two shields 30, 32 may, in their fusion position, lie transversely directly on either side of the impact zone 34.
- the melting position of the movable scraper 20 is a position in which the movable scraper 20 is located at the internal transverse end 12a of the first tray 12. In the melting position, the movable scraper 20 overcomes the first tray 12.
- the position of refill of the mobile scraper 20 is a position in which the mobile scraper 20 is with the two shields 30, 32, at the outer transverse end 16b of the third tank 16.
- the internal transverse end 12a of the first tank is the transverse end of the first tank 12 closest to the center of the second tank 14.
- the internal transverse end 16a of the third tank 16 is the transverse end of the third tank. tank 16 closest to the center of the second tank 14. It is opposite the external transverse end 16b of the third tank 16 furthest from the center of the second tank 14.
- the impact zone 34 is therefore mobile in a transverse plane, substantially perpendicular to the longitudinal axis X. This transverse axis merges with the second transverse plane in which the powder beds of the three tanks 12, 14, 16 are inscribed.
- the fusion position of the first and second shields 30, 32 may be a movable position; in fact, in one embodiment where the shields 30, 32 are positioned directly on either side of the impact zone 34, if the latter moves, the shields 30, 32 move with it.
- the laser head 18 is movable, and the first and second shields 30, 32 move in correlation with the laser head 18. This embodiment allows the shields to always delimit the zone of impact 34 during the fusion phase.
- Such a configuration thus consists in installing mobile shields 30, 32 as close as possible to the impact zone 34.
- the shields 30, 32 are installed on the one hand transversely on the same side of the scraper 20, so that the latter can move transversely without steric hindrance.
- the shields 30, 32 can thus move to be as close as possible to the melting zone without hindering the movement of the scraper 20.
- the laser head 18 After each melting phase, the laser head 18 is turned off. Plates 26, 28 are longitudinally moved one notch from the laser head while platen 24 is moved longitudinally closer to laser head 18, and shields 30, 32 and movable scraper 20 are positioned in the reloading position.
- the movement of the mobile scraper 20 makes it possible to reconstitute the bed of powder from the second tank 14 by entraining a layer of powder from the first tank 12 towards the second tank 14 and by entraining the surplus towards the third tank 16.
- the two shields 30, 32 and the mobile scraper 20 return to their fusion position.
- the laser head 18 is turned on again.
- the tool 10 allows the manufacture of a part by a succession of melting phases and recharging phases: - During each melting phase, the laser head 18 is activated and impacts the powder bed of the second tank 14 creating an impact zone in which the powder is melted;
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Automation & Control Theory (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1909471A FR3100145B1 (fr) | 2019-08-28 | 2019-08-28 | Outillage de fabrication additive par fusion laser avec boucliers anti-turbulences |
PCT/FR2020/051503 WO2021038170A1 (fr) | 2019-08-28 | 2020-08-26 | Outillage de fabrication additive par fusion laser avec boucliers anti-turbulences |
Publications (1)
Publication Number | Publication Date |
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EP4021667A1 true EP4021667A1 (fr) | 2022-07-06 |
Family
ID=69157974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20775386.4A Pending EP4021667A1 (fr) | 2019-08-28 | 2020-08-26 | Outillage de fabrication additive par fusion laser avec boucliers anti-turbulences |
Country Status (5)
Country | Link |
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US (1) | US20220297189A1 (fr) |
EP (1) | EP4021667A1 (fr) |
CN (1) | CN114423545B (fr) |
FR (1) | FR3100145B1 (fr) |
WO (1) | WO2021038170A1 (fr) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US5252264A (en) * | 1991-11-08 | 1993-10-12 | Dtm Corporation | Apparatus and method for producing parts with multi-directional powder delivery |
CN201300207Y (zh) * | 2008-10-30 | 2009-09-02 | 华中科技大学 | 一种金属零件选区激光熔化快速成型设备 |
DE102010052206B4 (de) * | 2010-11-10 | 2015-06-18 | Cl Schutzrechtsverwaltungs Gmbh | Vorrichtung zum Herstellen von dreidimensionalen Objekten |
DE102013217598A1 (de) * | 2013-09-04 | 2015-03-05 | MTU Aero Engines AG | Vorrichtung zur Laser-Materialbearbeitung |
DE102015201425B3 (de) * | 2015-01-28 | 2016-04-07 | MTU Aero Engines AG | Vorrichtung und Verfahren zur Herstellung oder Reparatur eines dreidimensionalen Objekts |
EP3321003B1 (fr) * | 2016-11-11 | 2019-01-09 | SLM Solutions Group AG | Appareil et méthode de production d'une pièce tridimensionnelle avec écoulement de gaz amélioré |
US10821514B2 (en) * | 2017-05-31 | 2020-11-03 | General Electric Company | Apparatus and method for continuous additive manufacturing |
EP3437838B1 (fr) * | 2017-08-04 | 2022-02-23 | CL Schutzrechtsverwaltungs GmbH | Appareil de fabrication additive d'objets tridimensionnels |
CN209272471U (zh) * | 2018-11-30 | 2019-08-20 | 孟恬静 | 一种连续扫描式三维物体制造装置 |
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2019
- 2019-08-28 FR FR1909471A patent/FR3100145B1/fr active Active
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2020
- 2020-08-26 CN CN202080066046.7A patent/CN114423545B/zh active Active
- 2020-08-26 WO PCT/FR2020/051503 patent/WO2021038170A1/fr unknown
- 2020-08-26 US US17/638,392 patent/US20220297189A1/en active Pending
- 2020-08-26 EP EP20775386.4A patent/EP4021667A1/fr active Pending
Also Published As
Publication number | Publication date |
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FR3100145B1 (fr) | 2021-09-03 |
CN114423545B (zh) | 2024-06-18 |
US20220297189A1 (en) | 2022-09-22 |
CN114423545A (zh) | 2022-04-29 |
WO2021038170A1 (fr) | 2021-03-04 |
FR3100145A1 (fr) | 2021-03-05 |
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