WO2020089087A1 - Système de collecte pour un dispositif de construction par couches ainsi que procédé de construction par couches et dispositif de construction par couches pour la fabrication additive d'au moins une zone d'une pièce - Google Patents

Système de collecte pour un dispositif de construction par couches ainsi que procédé de construction par couches et dispositif de construction par couches pour la fabrication additive d'au moins une zone d'une pièce Download PDF

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Publication number
WO2020089087A1
WO2020089087A1 PCT/EP2019/079199 EP2019079199W WO2020089087A1 WO 2020089087 A1 WO2020089087 A1 WO 2020089087A1 EP 2019079199 W EP2019079199 W EP 2019079199W WO 2020089087 A1 WO2020089087 A1 WO 2020089087A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
collecting
component
layer construction
inductor
Prior art date
Application number
PCT/EP2019/079199
Other languages
German (de)
English (en)
Inventor
Jörg HAMANN
Johannes Casper
Original Assignee
MTU Aero Engines AG
Eos Gmbh Electro Optical Systems
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 MTU Aero Engines AG, Eos Gmbh Electro Optical Systems filed Critical MTU Aero Engines AG
Publication of WO2020089087A1 publication Critical patent/WO2020089087A1/fr

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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
    • 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
    • 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
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • 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
    • 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
    • B22F12/10—Auxiliary heating means
    • 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
    • B22F12/10—Auxiliary heating means
    • B22F12/13—Auxiliary heating means to preheat the material
    • 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
    • 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
    • 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 invention relates to a collecting device for a layer construction device for the additive production of at least one component area of a component.
  • the invention further relates to a layer construction method and a layer construction device for the additive manufacturing of at least one component area of a component, in particular a component of a turbomachine.
  • a large number of layer construction methods and devices for producing individual component areas or complete components are known.
  • additive or generative manufacturing processes are known in which the component, which can be a component of a turbomachine or an aircraft engine, for example, is built up in layers.
  • Predominantly metallic components can be manufactured, for example, by laser or electron beam melting processes.
  • At least one powdery component material is first applied in layers in the area of a build-up and joining zone in order to form a powder layer.
  • the component material is then solidified locally by supplying energy to the component material in the area of the assembly and joining zone by means of at least one energy beam, where the component material melts or sinters and forms a component layer.
  • the energy beam is layer-controlled depending on the layer information of the component to be manufactured.
  • the layer information is usually generated from a 3D CAD body of the component and divided into individual component layers. After the molten component material has solidified, the building platform is lowered in layers by a predefined layer thickness. Then the steps mentioned are repeated until the desired completion of the desired component area or the entire component.
  • the component area or the component can basically be produced on a construction platform or on an already generated part of the component or component area.
  • the advantages of this additive manufacturing lie in particular in the possibility of being able to produce very complex component geometries with cavities, undercuts and the like in a single process. Layer construction processes are particularly suitable for easily meltable and weldable metallic materials.
  • an inductive temperature control device for this purpose, which comprises at least one inductor (coil), via which the material or the area of the component already manufactured locally in the assembly and joining zone can be brought to a desired temperature.
  • the inductor is located in the immediate vicinity of the assembly and joining zone in order to be able to induce sufficient eddy currents.
  • process by-products are removed via a protective gas flow so that adverse effects with regard to the joining quality and surface quality of the manufactured component are minimized. Nevertheless, it has so far not been possible to avoid process by-products such as smoke, soot, spatter, material powder and the like being deposited on the inductor or the inductors of such temperature control devices. If these process by-products then get back into the joining zone, they worsen the process result, cause errors and reduce z. B. the mechanical properties of the manufactured component.
  • the object of the present invention is to provide better protection against undesired process byproducts in the area of the build-up and joining zone in layer-building processes.
  • a first aspect of the invention relates to a collecting device for a layer construction device for the additive production of at least one component area of a component.
  • the collecting device has at least one collecting means for collecting and storing process by-products of a layered construction method carried out by means of the layered construction device and at least one holding means for fixing the collection device to one Inductor of an inductive temperature control device of the layer construction device comprises.
  • the collecting device can be fixed on or on one or more inductors of an inductive temperature control device of the layer building device and includes collecting means for collecting process by-products that fall in particular, which arise during a layer building process.
  • process by-products are collected by the collecting agent and stored there, so that they are reliably prevented from falling back into the assembly and joining zone or onto other process elements.
  • the mode of operation of the inductor remains unaffected, so that reliable temperature control can be guaranteed over the entire layer construction process. This also contributes to increasing component quality.
  • the collecting device can additionally be carried with or without a time offset depending on a current scan position of an energy beam on a construction field of the associated layer construction device, that is to say with the current scan position.
  • the collecting device according to the invention is not used for the global collecting of impurities, as is involuntarily made, for example, by the floor of the process chamber in the enclosed construction field.
  • the catchment device according to the invention if it is attached to an inductor of a layer construction device, collects contaminants and process by-products locally during a layer construction process. Local collection can be carried out in a targeted manner in the vicinity of the production of customary process by-products.
  • the collecting device catches so-called “splashes”, which typically surround the construction field or the process chamber floor around the construction field within a certain distance by a scan position of the energy beam. to fall, that is, to fall on a statistical average within a defined radius range.
  • splashes typically surround the construction field or the process chamber floor around the construction field within a certain distance by a scan position of the energy beam. to fall, that is, to fall on a statistical average within a defined radius range.
  • “one / one” are to be read as indefinite articles within the scope of this disclosure, ie without “explicitly stated otherwise” as “at least one / at least one”.
  • “one / one” can also be understood as “only one / only one”.
  • the at least one collecting means comprises a pocket with an entry opening, the entry opening preferably being arranged on a side of the collecting device facing away from the holding means.
  • the bag can basically be made of a flexible or an inflexible material.
  • the pocket tapers starting from an inlet opening.
  • the pocket is designed like a funnel.
  • process by-products can be reliably collected via the large-area inlet opening and, for example, can be transported with the aid of gravity in the direction of the tapered end region of the pocket, thereby ensuring reliable storage.
  • an inner space of the bag is free of corners in cross section. This can be achieved for example by a round or non-round design of the bag. A corner-free design ensures that the bag can be easily filled and emptied again without particles getting stuck in corners.
  • the bag can also basically have any volume for storing the process by-products and / or any extension.
  • the pocket preferably has a volume which is designed to accommodate all of the process by-products which get into it or are brought into it during a layer construction process.
  • the required volume can, for example, be calculated and / or determined on the basis of empirical values. This can prevent the pocket from overflowing during the shift building process and possibly contaminating the construction field or other process-relevant elements within the process chamber as a result of the overflow.
  • the pocket can be emptied, so that the collecting device can function as intended in a further shift construction process.
  • a cross-sectional area of the entry opening of the pocket corresponds at least essentially to an orthogonal projection of an assigned inductor onto a construction field of the layer construction device.
  • the inlet opening of the pocket in the assembled state of the collecting device extends as completely as possible, that is to say with deviations of at most ⁇ 10%, over the entire width of the associated inductor, completely or at least approximately around its top completely covered.
  • the inlet opening of the pocket is substantially larger than the width of the associated inductor, but this usually leads to an undesired obstruction of the energy beam used for solidification during operation.
  • the collecting device comprises at least one suction connection fluidly coupled to the collecting means for a suction device for suctioning off process by-products from the at least one collecting means.
  • the collecting device comprises at least one flow channel for guiding a fluid flow.
  • a protective gas stream can be generated in the region of the inductor, through which process by-products are removed via the build-up and joining zone.
  • a protective gas stream can also be used for thermal insulation of the collecting agent in order to prevent caking of process by-products.
  • the collecting device comprises at least one insulation means by means of which the collecting means is thermally insulated from the holding means. This can reliably prevent "caking" of process by-products and other contaminants in the collecting agent.
  • the collecting device comprises at least one cleaning agent for cleaning the at least one collecting agent from process by-products.
  • the cleaning agent is not suitable for limited execution and can be designed, for example, to suction, brush, emit the Auffangmit tel, etc.
  • the collecting device comprises a passage opening for an energy beam of the layer construction device. This can ensure that the collecting device can be arranged during a solidification step in the immediate vicinity of the point of impact of the energy beam on the powder or component layer, ie where most of the process by-products are created.
  • the collecting device is at least predominantly annular.
  • the collecting device for local collecting has a shape that corresponds to a ring that is completely closed or largely closed.
  • Such a ring has a central passage opening for an energy beam and covers as large a proportion as possible a relevant area around the current scan position or process point, since spatter and other contaminants can fly away on all sides, even if there are preferred directions under certain conditions .
  • a second aspect of the invention relates to a layer construction method for additive manufacturing to at least one component area of a component, in particular a component of a fluid flow machine, in which at least the steps a) applying at least one powder layer of a material in the area of a build-up and joining zone of at least one lowerable Construction platform, the material being tempered to a predetermined temperature by means of an inductive temperature control device, b) layer-by-layer and local melting and / or sintering of the material to form a component layer by selective irradiation of the material with at least one energy beam, c) layer-by-layer lowering of the construction platform a predefined layer thickness and d) repeating steps a) to c) until the component area is completed.
  • At least one collecting device is fixed to an inductor of the temperature control device by means of its holding means and that process by-products of the layer construction method are collected by means of its at least one collecting means.
  • the at least one collecting means of the collecting device is cleaned permanently or at regular or irregular intervals and / or as required from collected process by-products.
  • sensory monitoring a calculation based on certain parameters or empirical values, the current or planned construction time, the material currently used, the radiation parameters used or any combination thereof can be used to determine a need.
  • collected process by-products can be removed to avoid overflow of the collecting device. If necessary, the removal can take place permanently, for example, during a solidification step or in a parking position of the inductor when applying a new powder layer.
  • the collecting device is acted upon permanently or temporarily with a gas, in particular a protective gas.
  • the gas which can also be a gas mixture, can be used for various purposes as required. For example, it can be used for purging the holding means, for generating a directed gas stream for removing process by-products and / or for tempering or cooling the collecting device.
  • a third aspect of the invention relates to a layer construction device for the additive production of at least one component region of a component by an additive layer construction method.
  • the layer building device comprises at least one powder feed for applying at least one powder layer of a material to a build-up and joining zone of a movable building platform, an inductive temperature control device, by means of which the material is to be tempered to a predetermined temperature before and / or during the layer building process, and at least a radiation source for generating at least one energy beam for layer-by-layer and local fusing and / or sintering of the tempered material to form a structural Partial layer by selective irradiation of the material with the at least one energy beam according to a predetermined radiation strategy.
  • the layer construction device comprises at least one collecting device according to the first aspect of the invention, which is fixed by means of its at least one holding means to an inductor of the temperature control device.
  • This provides improved protection against undesired process by-products in the area of the assembly and joining zone, since process by-products can be collected and no longer deposit on the inductor or inductors. This leads to better process results and better component qualities. Further advantages can be found in the descriptions of the first and second aspects of the invention, advantageous configurations of the first and second aspects of the invention being regarded as advantageous configurations of the third aspect of the invention. Conversely, advantageous refinements of the third aspect of the invention are to be seen as advantageous refinements of the first and second aspects of the invention.
  • the layer construction device is designed as a selective laser melting and / or laser sintering device.
  • components can be produced, the mechanical properties of which at least essentially correspond to those of the construction material.
  • a CO 2 laser, Nd: YAG laser, Yb fiber laser, diode laser or the like can be provided to generate a laser beam. It can also be seen that two or more laser beams are used.
  • melting and / or sintering of the powder may occur during the irradiation, so that in the context of the present invention the term “welding” can also be understood to mean “sintering” and vice versa.
  • the collecting device comprises a pocket with an inlet opening, the inlet opening being arranged parallel to the construction field in the assembled state of the collecting device and / or being arranged facing a ceiling and / or a chamber wall of a process chamber of the layer construction device.
  • the collecting means of the collecting device extends along an area of the inductor facing away from the powder layer. Regardless of the shape of the inductor, it can be ensured that no process by-products can deposit on its surface, but are caught.
  • the temperature control device comprises at least two inductors that are movable relative to one another. This makes it possible to selectively superimpose the magnetic fields of the inductors in order to heat certain areas particularly strongly.
  • the collecting device or the collecting means can be arranged on an inductor or on two or more inductors, in which case the entire catches of the second or further inductor need not be provided with a collecting means in order to make the inductors relatively movable not restrict each other.
  • a collecting device is fixed to each inductor. This enables process by-products to be collected in a particularly reliable manner.
  • Figure 1 is a schematic sectional view of a collecting device according to the invention, which is fixed to an inductor of a layer construction device.
  • FIG. 2 shows a schematic sectional view of a collecting device according to the invention in accordance with a further exemplary embodiment, which is fixed to an inductor of a layer construction device;
  • Fig. 3 is a schematic, partially in section view of the layer construction device according to the prior art for additive manufacturing of manufacturing products.
  • FIG. 1 shows a schematic sectional view of a collecting device 10 according to the invention, which is fixed via a holding means 12 to an inductor 14 of a layer construction device 100 designed as a selective laser melting and / or laser sintering device (see FIG. 3).
  • the inductor 14 is in the present case a coil of a temperature control device (not shown).
  • the inductor 14 is used for the local tempering of a material powder or an already manufactured component area of an additively manufactured component 15 (see FIG. 2) and is located in the immediate vicinity of a build-up and joining zone II (see FIG. 2) of the layer construction device 100.
  • the collecting device 10 comprises an arranged collecting means 16 above the inductor 14, which is designed as a pocket and in which process by-products such as smoke, soot, spatter, powder material and the like are collected during the layer-building process.
  • process by-products such as smoke, soot, spatter, powder material and the like are collected during the layer-building process.
  • these process by-products can not deposit on the inductor 14 and cannot fall back into the joining zone II, where they can worsen the process result, cause errors and reduce the properties of the component 15 produced.
  • the collecting means 16 tapers starting from an inlet opening 18 and that a cross-sectional area of the inlet opening 18 is somewhat wider than the inductor 14 underneath in order to reliably shield it.
  • the collecting device 10 is acted upon by a protective gas, either continuously or temporarily.
  • a protective gas either continuously or temporarily.
  • the pockets 16 are connected via a suction connection (not shown) and, if appropriate, via a secondary circuit to a global circulation system of the layer construction device for a protective gas application.
  • a separate gas circuit can be seen before.
  • the gas flow identified by the arrows I can also be used to form a directional laminar flow between adjacent sections of the collecting means 16 in order to discharge rising process by-products directly from the area of the assembly and joining zone II.
  • the pocket 16 can be permanently cleaned during a welding process or in a parking position of the inductor 14 when a new layer of powder is applied, e.g. B are vacuumed, brushed, blasted etc.
  • the temperature control device has two or more inductors 14 (e.g. cross-coil technology), pockets can be provided on one or both or all further inductors 14, the entire length of each inductor 14 not being provided with a collecting means 16 must, in order not to hinder a relative mobility of inductors 14 to one another.
  • inductors 14 e.g. cross-coil technology
  • Fig. 2 shows a schematic sectional view of a collecting device 10 according to the invention according to a further embodiment, which is fixed to an inductor 14 of the layer construction device 100.
  • the collecting device 10 has two differently shaped collecting means 16.
  • the Auffangein device 10 has a flow channel 20 through which a protective gas flow I is passed in order to keep the area of the assembly and joining zone II free of impurities by a directed fluid flow.
  • the pockets 16 are decoupled from the inductor 14 by the inert gas flow I mixed to prevent caking of the impurities in the pockets 16.
  • the collecting device 10 comprises a passage opening 22 for an energy beam E of the layer construction device 100, through which the energy beam E directed via an optic 24, which in the present case is a laser beam, points to the assembly and joining zone II can meet to selectively layer the material powder to component of the additive to be built on a lowerable construction platform 26 to consolidate component 15 ver.
  • an optic 24 which in the present case is a laser beam
  • a layer construction device 100 shown schematically and partially in section in FIG. 3, is exemplarily designed as a selective laser sintering or laser melting device and is shown in FIG Explained below.
  • the layer building device 100 is used with a collecting device 10 according to the invention, for example as shown in FIGS. 1 and 2, the collecting device 10 and the induction coil (s) 14 on which the collecting device 10 is fixed Not shown for reasons of clarity.
  • a process chamber 40 with a chamber wall 42.
  • an upwardly open construction container 44 with a wall 46 is arranged.
  • a working level 48 is defined through the upper opening of the building container 44, the area of the working level 48 lying within the opening, which can be used for building the component or object 15, being referred to as the building and joining zone or as building site II .
  • a support 50 which can be moved in a vertical direction z and on which a base plate 52 is attached, which closes the building container 44 at the bottom and thus forms the bottom thereof.
  • the base plate 52 may be a plate formed separately from the carrier 50 and attached to the carrier 50, or it may be integrally formed with the carrier 50.
  • a building platform 26 can be attached to the base plate 52, on which the object 15 is built.
  • the object 15 can also be built on the base plate 52 itself, which then serves as the building platform 26.
  • the object 15 to be formed in the building container 44 on the building platform 26 is shown below the working level 48 in an intermediate state with a plurality of solidified layers, surrounded by material 56 that has remained unconsolidated and serves as the building material.
  • the layer construction device 100 further contains a storage container 58 for the powdery material 56 which can be solidified by electromagnetic radiation and a layer 60 movable in a horizontal direction Y as a powder feeder for applying the material 56 to the construction field I.
  • the storage container 58 can alternatively also below the Level of construction site II may be arranged (not shown). From this, the material 56 z. B.
  • the layer construction device 100 also contains an exposure device 64 with a laser 66, which generates a laser beam E as an energy beam, which is deflected via a deflection device 70 and through a focussing device 72 via a coupling window 82 which is on the ceiling of the process chamber 40 in its wall 42 is attached, is focused on the working plane 48.
  • the layer construction device 100 contains a control unit 74, via which the individual components of the layer construction device 100 are carried out in a coordinated manner for carrying out the construction process. controlled.
  • Control unit 74 may include a CPU, the operation of which is controlled by a computer program (software).
  • the computer program can be stored separately from the device on a storage medium from which it can be loaded into the device, in particular into the control unit 74.
  • the carrier 50 is first lowered by a height which corresponds to the desired layer thickness.
  • a layer of the powdery material 56 is then applied by moving the coater 60 over the working plane 48.
  • the coater 60 pushes a slightly larger amount of material 56 in front of it than is required for the build-up of the layer.
  • the coater 60 pushes the planned excess of material 56 into an overflow container 62.
  • an overflow container 62 is arranged on both sides of the construction container 44.
  • the powdery material 56 is applied at least over the entire cross section of the object 15 to be produced, preferably over the entire construction area II, that is to say the region of the working plane 48, which can be lowered by a vertical movement of the carrier 50.
  • the cross section of the object 15 to be produced is then scanned by the laser beam E with a radiation exposure region (not shown) which schematically represents an intersection of the energy beam bundle with the working plane 48.
  • the powdery material 56 is solidified at locations which correspond to the cross section of the object 15 to be produced.
  • the layer construction device 100 furthermore basically contains optional components, namely a gas supply channel 34 ", a gas inlet nozzle 34 ', a gas outlet opening 30' and a gas discharge channel 30".
  • the process gas flow moves horizontally in a plane D across the construction site II.
  • a flow direction of the process gas stream runs in the same spatial direction as the coating direction Y, ie parallel to it.
  • the gas supply duct 34 ", the gas inlet nozzle 34 ', the gas outlet opening 30' and the gas discharge duct 30" can also be arranged, for example, rotated through 90 ° in or around the process chamber 40, that the (horizontal) coating direction Y (accordingly rotated by 90 °) is essentially perpendicular to the (horizontal) flow direction of the process gas stream.
  • the gas supply and discharge can also be controlled by the control unit 74 (not shown).
  • the gas sucked out of the process chamber 40 can be supplied to a filter device (not shown), and the filtered gas can be fed back to the process chamber 40 via the gas supply channel 34 ", thereby creating a circulating air system with a closed gas circuit is formed.
  • a plurality of nozzles or openings can also be provided in each case.
  • control unit 82 coupling window

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

Abstract

L'invention concerne un système de collecte (10) pour un dispositif de construction par couches (100) pour la fabrication additive d'au moins une zone d'une pièce (15). Le système de collecte (10) comprend au moins un moyen (16) de collecte pour la collecte de sous-produits de processus d'un procédé de construction par couches effectué au moyen d'un dispositif de construction par couches (100) et au moins un moyen de retenue (12) pour la fixation du système de collecte (10) sur un inducteur (14) d'un système de thermorégulation par induction du dispositif de construction par couches (100). L'invention concerne en outre un procédé de construction par couches et un dispositif de construction par couches (100) pour la fabrication additive d'au moins une zone d'une pièce (15).
PCT/EP2019/079199 2018-10-30 2019-10-25 Système de collecte pour un dispositif de construction par couches ainsi que procédé de construction par couches et dispositif de construction par couches pour la fabrication additive d'au moins une zone d'une pièce WO2020089087A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018127113.1 2018-10-30
DE102018127113.1A DE102018127113A1 (de) 2018-10-30 2018-10-30 Auffangeinrichtung für eine Schichtbauvorrichtung sowie Schichtbauverfahren und Schichtbauvorrichtung zum additiven Herstellen zumindest eines Bauteilbereichs eines Bauteils

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WO2020089087A1 true WO2020089087A1 (fr) 2020-05-07

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DE102014108061A1 (de) * 2013-06-20 2014-12-24 Eos Gmbh Electro Optical Systems Vorrichtung und Verfahren zur generativen Herstellung zumindest eines Bauteilbereichs eines Bauteils

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DE3923829A1 (de) * 1989-07-19 1991-01-31 Fraunhofer Ges Forschung Absauganlage

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