WO2020128500A1 - Système de récupération de poudre - Google Patents

Système de récupération de poudre Download PDF

Info

Publication number
WO2020128500A1
WO2020128500A1 PCT/GB2019/053646 GB2019053646W WO2020128500A1 WO 2020128500 A1 WO2020128500 A1 WO 2020128500A1 GB 2019053646 W GB2019053646 W GB 2019053646W WO 2020128500 A1 WO2020128500 A1 WO 2020128500A1
Authority
WO
WIPO (PCT)
Prior art keywords
powder
weight
metallic powder
module
modules
Prior art date
Application number
PCT/GB2019/053646
Other languages
English (en)
Inventor
Darren Thomas
Ross STUDZINSKI
Stephen SAY
Kevin Payne
Original Assignee
Gkn Aerospace Services Limited
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 Gkn Aerospace Services Limited filed Critical Gkn Aerospace Services Limited
Publication of WO2020128500A1 publication Critical patent/WO2020128500A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • 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
    • 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
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/68—Cleaning or washing
    • 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
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • 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
    • B33Y40/20—Post-treatment, e.g. curing, coating or polishing
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • 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 is concerned with an improved apparatus and method for use in the manufacture of components using additive manufacturing (AM) techniques.
  • AM additive manufacturing
  • the apparatus and method may be used as part of an electron beam melting (EBM) manufacturing process.
  • EBM electron beam melting
  • a typical additive manufacturing process such as EBM uses a metallic powder as the forming material for the desired component. Progressive layers of metallic powder are melted using an electron beam in predetermined paths to form the desired component’s 3-D shape.
  • the part is formed in a build tank which is used to contain and support the successive layers of metallic powder and, importantly, the melted 3-D component which has been formed by melting the powder together in predetermined paths. Once the process is complete a 3-D component is surrounded by un-melted metallic powder within the build tank.
  • the conventional approach is to hand blast the residual powder away from the outside of the cake to leave the formed component or part which is contained within the cake.
  • Careful blasting using an abrasive entrained in a gas flow is used to remove the excess un-melted powder from the part leaving a clean and finished 3-D component.
  • the removed powder is collected and sieved before being recycled and re-used to form the next component. This reduces waste material and also reduces the costs of manufacturing parts. It is also environmentally desirable.
  • AM techniques such as EBM allow for intricate 3- D components to be formed with complex external and internal geometries.
  • the conventional processes allow powder to be thoroughly removed from such internal spaces of components to leave a net shape.
  • the excess powder is removed by placing the cake into a sealed housing. Inside the housing a gas jet or nozzle is provided which can be manipulated by an operator using sealed rubber gloves which extend into the housing.
  • complex components can be cleaned of excess powder to leave the desire net-shape component.
  • Metallic powder can then be conveniently collected at the bottom of the housing using a suitable filter and the metallic powder recycled accordingly.
  • the inventors Whilst existing approaches to EBM offer very reliable and accurate cleaning of AM formed components the inventors have established an alternative approach to handling build tank contents and furthermore to recovery of metallic powder. Still further the inventors have devised an apparatus and method that advantageously allows for increases in production rates and component integrity by control of the metallic powder recycling process. Specifically the inventors have established a way in which the integrity of a subsequent build can be monitored before a recycled powder is re-used for a subsequent build. This is particularly advantageous in the aerospace industry where some components require very high levels of structural integrity before they can be certified for aircraft use.
  • the apparatus and method described herein is particularly useful in EBM processes but is also applicable to other AM techniques including laser melting processes and other processes using a metallic powder in which excess powder must be removed and recycled.
  • an additive manufacturing metallic powder recovery apparatus comprising a powder removal chamber in communication with one or more powder recovery modules, each module arranged in use to recover metallic powder from a gas flow passing through the module(s); and wherein the or each module comprises a weight detector arranged in use to determine the weight of powder recovered by the module.
  • an arrangement is provided with may be used to recover excess metallic powder as part of an additive manufacturing (AM) process in a controlled and accountable manner. Not only is the excess powder recovered but it is further collected and weighted allowing for precise determinations to be made as to the location of any and all powder that has been used in the manufacturing process.
  • AM additive manufacturing
  • a component is formed by melting a metallic powder according to a predetermined profile to form a three dimensional component.
  • the heat source may for example be an electron beam/laser or other heat source.
  • Powder is then manually chipped away or blown away within a blast chamber to release the final product.
  • Waste powder (which may include partially or fully melted powder) settles within the chamber and can finally be disposed of.
  • the gas forming the atmosphere within the blast chamber can be processed and the excess powder removed in a series of processing steps.
  • the powder recovered by each step is determined so as to provide an indication of the amount and location of powder within the system.
  • each or a sub-set of the plurality of modules which are arranged to recover the metallic powder may be provided with an associated weight detector arranged in use to determine the weight of the powder recovered from the module.
  • the weight may be detected in a number of ways, for example using a calibrated force transducer or other suitable weighing apparatus which has been calibrated to establish the mass of the powder which has been collected in the, or each, module.
  • the gas forming the atmosphere within the blast chamber may be processed in a number of ways to remove or collect the metallic powder which is carried by the gas.
  • the modules may for example be selected from one of a cyclonic separator, a dust filter or a mechanical sieve. These may be used in series or parallel and may be arranged to receive multiple passes of the gas.
  • Each module may be selected and placed in sequence such that the cyclonic separator, dust filter or mechanical sieve are each arranged to remove metallic powder from the gas flow having predetermined average particle/agglomerate sizes.
  • the powder removal chamber and one or more modules may be arranged as a closed loop and arranged to output powder for introduction into a vessel for an additive manufacturing machine.
  • the recovered powder may be re-used in a subsequent manufacturing process instead of being discarded as potentially hazardous waste.
  • the powder removal chamber may be in any suitable form such as a blast chamber arranged to cause an abrasive powder to impact against a metallic powder body containing a component to be removed and further arranged to communicate all or some of the released metallic powder to the one or more modules.
  • the chamber thereby acts as the releasing mechanism for the un-melted or partially melted powder using the manufacturing process.
  • the chamber may then communicate the recovered powder to the modules for processing and‘cleaning’.
  • the excess metallic powder around the component which has been formed by the AM process may be removed in a number of ways.
  • an abrasive material contained within a high velocity gas flow may be caused to impact against the outer body of the part removed from the additive manufacturing machine.
  • the abrasive material may be selected so as to correspond to the metallic powder which was utilised in the AM manufacturing process.
  • cross-contamination of powders within the system can be avoided and a single powder type recovered by the modules.
  • the weight detector(s) may be arranged to determine the weight of the recovered metallic powder in each of the module and to output an indication of the determined weight either independently or collectively. Thus a total powder recover weight can be determined and additionally the location at which the powder was recovered can be determined. This may then provide additional information regarding the particle sizes that make up the recovered powder since each module may be arranged to recover powder of a different size. For example the modules may be arranged to recover particles in excess of 15 microns in diameter to less than 150 microns. For laser beam melting processes the power size may be 25 - 63pm. For Electron Beam Melting the power size may be 45 - 105 pm.
  • One module may be a mechanical sieve arranged to output recovered powder from a build into a blend container and to prevent metallic powder having a size greater than a predetermined size from entering a blend container.
  • the blend container may serve as a vessel which can collect suitable powder which may be re-used.
  • recovered powder may be designated as:
  • a blend container or vessel may advantageously be arranged to receive recovered powder from the first group (a) from one or more of the modules. Additionally the blend container may be arranged to receive multiple batches of recovered powder from multiple build jobs i.e. recovered powder from more than 1 component built. The resulting powder (provided it is the same powder) can then be collected from multiple AM builds and blended and re-used as described herein.
  • the blend container or vessel may be provided with a weight module arranged to determine the weight of the recovered metallic powder for each of a series of builds.
  • the recovered powder can be determined on a per-build basis which can then be used for further process auditing.
  • the apparatus may be provided with a data processing/recording apparatus which may log where in the apparatus powder is recovered and the amount (weight) of powder recovered.
  • a data processing/recording apparatus may log where in the apparatus powder is recovered and the amount (weight) of powder recovered.
  • using the total weight of powder used in the manufacturing process and subtracting the weight of the part and the sum of the weight of recovered powder provides an indication of the residual powder remaining in the system.
  • the data processing/recording apparatus may then be used to establish contamination levels within the system and to assess the quality of the powder recovered and intended for re-use.
  • a modular powder recovery system for metallic powder recovery from an additive manufacturing process, the system comprising a plurality of metallic powder recovery modules, each module arranged to remove metallic powder entrained within a gas flow passing through the modules and to determine the weight of metallic powdered removed by the respective modules.
  • a total recovered mass of powder may additionally be determined based on the sum of the values determined at each module.
  • the data processor/logging apparatus may advantageously be configured to compare:
  • the data processor/logging apparatus may be provided with a visual display or other means to alert a system controller or operative of the results of the analysis, such as the levels in the blending vessel, contamination build up or any other anomalies in the process.
  • each module recovering powder with a different average particle/agglomerate size.
  • the (or each) module may comprise a weight detector arranged in use to determine the weight of powder recovered by the module and to output the weight of recovered powder by the respective module.
  • a cyclonic separator, dust filter and/or mechanical sieve may be arranged to remove metallic powder from the gas flow having predetermined average particle/agglomerate sizes.
  • the powder recovered by the modules may be selected to have a particle size less than a predetermined threshold and may be collected and supplied to an additive manufacturing machine for a subsequent additive manufacture build.
  • the recovered powder may additionally be assessed for suitability for re-use and may optionally be blended with previously un-used metallic powder to provide a blended powder containing recovered metallic powder and new powder.
  • an additive manufacturing powder recovery apparatus comprising a plurality of powder recovery modules arranged in series, wherein each module is configured to recover metallic powder with a predetermined size threshold, and wherein metallic powder that is permitted to pass through the series of powder recovery modules is supplied to a vessel for re-use in a subsequent additive manufacturing process.
  • Figure 1A shows a build tank used in accordance with an invention described herein with a movable base plate
  • Figure 1 B shows a cross-section through the build tank of figure 1 A after an EBM build
  • Figure 1 C shows a cross-section through the build tank and build cake after the build cake has been released from the build tank
  • Figure 1 D shows a final EBM formed component after excess metallic powder has been removed
  • FIG. 2 shows a schematic flow chart of the stages of EBM additive manufacturing and powder recovery according to an invention described herein;
  • Figure 3 shows a flow diagram of a process described herein identifying material weighing points throughout the process.
  • Figure 1A shows a build tank used in accordance with an invention described herein with a movable base plate. Specifically the figure shows a build tank 1 of the type used with an electron beam melting (EBM) process.
  • EBM electron beam melting
  • the build tank 1 comprises an outer body 2 and a movable plate 3 located within the body 2.
  • an electron beam scans or rasters across a layer of metallic powder which is deposited on the build plate.
  • the build plate is then successively lowered, a new layer of powder deposited and a new layer melted using the electron beam.
  • Each layer is melted in a predetermined pattern to create a desired component in three dimensions as illustrated with reference to figure 1 B.
  • Figure 1 B shows a cross-section through a build tank.
  • the multiple layers 4 are shown in cross-section together with a component 5 which has been formed by melting regions of each layer 4.
  • the component 5 is formed in a series of steps until the desired shape is complete.
  • the material 6 within the build tank 1 which surrounds the component 5 is un melted metallic powder or semi-sintered powder which is still in powder form.
  • An example of the powder material that may be used in an EBM machine includes but is not limited to Ti 64, manufactured for example by GKN Floeganaes.
  • the build tank may be made from any suitable material such as, for example, stainless steel.
  • Build tanks for EBM machines are well understood by a person skilled in the art of EBM and will not therefore be described in detail herein.
  • the component must be removed.
  • the combination of melted material (forming the component 5) and the surrounding powder is termed a‘cake’ within the art.
  • the base plate is elevated forcing the cake from the top of the build tank 1 as shown in Figure 1 C.
  • the next process is to remove or blast the excess powder from the component 5 to fully release the component 5.
  • the elevation of the base plate may take place in a blast chamber which is a sealed vessel in which the powder and semi-sintered powder can be blasted away from the component 5 and safely collected.
  • a blast chamber which is a sealed vessel in which the powder and semi-sintered powder can be blasted away from the component 5 and safely collected.
  • the build tank or chamber is loaded into a blast chamber and raised up slowly whilst an automated programme causes a metal, such as titanium media, 7 (such as a metallic powder) to be directed at high velocity onto the cake from an ejection nozzle 8.
  • a metal such as titanium media, 7 (such as a metallic powder)
  • Figure 1 D shows the resultant component 5 after the excess material has been abraded by the titanium media and nozzle arrangement.
  • aspects of an invention described herein are concerned with recovery of the metallic powder which has been blasted from the build cake. It is desirable to collect the removed metallic material for a number of reasons, including but not limited to:
  • Collection of powder allows for control inventory of the amount of material that has been used in the additive manufacturing process, in this example an EBM process; Collection of removed powder allows for the re-use of the un-sintered powder which reduces the manufacturing costs of the additive manufacturing process.
  • Component integrity can also be assessed through the establishment of the amount and type of powder that has been used in the component build.
  • the final point listed above is of particular relevance within the aerospace industry and most specifically for primary components which are essential to the flight of an aircraft. Such components must be carefully certified by the relevant regulatory bodies to ensure the integrity of the component (for example component 5 described herein).
  • the integrity of a component is related, amongst other things, to how homogenous or uniform the material making up the manufactured component is.
  • pockets of dissimilar material are contained with the built component 5 the structural integrity of the component may be significantly and even catastrophically compromised.
  • Such pockets may be caused by, for example, contamination of the raw powder materials or, in cases where recycled powder is used, cross-contamination between manufacturing jobs on the manufacturing line.
  • powder when material is recovered using a blast chamber as described herein powder may be entrapped within the powder recovery system. Conventionally recycling of powder may simply take waste powder from the blast chamber and re-use it in combination with new or virgin powder and re-supply this‘blend’ back to the EBM machines. The inventors have established that this is not sufficient for aerospace requirements and extremely tight tolerances cannot be achieved without a method of understanding or assessing the re-used or recycled powder.
  • FIG. 3 shows a flow diagram of a modified powder recovery system (PRS) according to an invention described herein.
  • PRS powder recovery system
  • the start and end of the PRS loop is the EBM (or other additive manufacturing machine) 9.
  • the supply of powder through path 10 is described below.
  • the build tank (described above) is loaded into a blast chamber 1 1 shown schematically in figure 2.
  • the excess powder and semi-sintered powder is removed as described above with reference to figures 1 A to 1 D and the resulting component 5 is removed and taken for final finishing (not shown).
  • the invention described herein is concerned with the recovery of powder from the EBM process using the following steps.
  • the waste from the blast chamber 1 1 contains large particles that have broken away from the build cake, powder and fine dust.
  • This mixture of waste is passed to the cyclone 12 where a cyclonic circulating airflow is used to centrifugally force the larger waste and powder towards the outside of the cyclone for collection whilst leaving unwanted dust in the middle of the cyclonic airflow which may then be drawn and evacuated using a filter/dust extractor which captures/removes the dust from the air.
  • the next stage of the PRS process is the sieve 13.
  • the sieve acts as a further process to remove contaminants from the powder including, by means of a magnet, any ferritic material that may have become entrained in the powder flow/powder. This may for example originate from abrasion of a nozzle in the blast chamber or abrasion of other metallic components in the PRS system. A magnet may thereby optionally capture any ferritic material and prevent this from passing into the recovered powder.
  • the sieve works in a conventional way to capture particles above a predetermined size and entrap them for removal.
  • the remaining powder can then be communicated to the next stage which is collection in a blend container 14 located adjacent to the sieve 13 and arranged to receive a plurality of sieve loads.
  • Such sieve loads correspond to multiple builds from the EMB machine and form a series of layers of captured powder being collected in the blend container 14.
  • the sieve also works to improve the flowability of the powder by removing‘lumps’ or agglomerations within the powder.
  • Blend container is transferred to a blend station 15 where the contents of the blend container can be blended i.e. mixed/agitated to form a homogeneous mix of powder from the multiple builds from the EBM.
  • This may be achieved in a range of ways but may advantageously be achieved by rotating the blend container in the blend station to pour the powder over on itself repeatedly.
  • the blending step mixes the different layers from the multiple EBM builds. Each build may have a different level of oxidation of the powder (through the melting process) and the blending allows an average or aggregate oxidation level to be achieved.
  • the blend station may therefore incorporate an optional oxygen indicator which can identify the oxidation level of the powder blend at the blend station stage. Blending may also be performed in an inert atmosphere, for example using Argon gas.
  • a final determination is made at step 16 where an assessment of whether the blend is suitable for re-use is made. A number of tests may be performed.
  • This assessment of suitability of the powder may be made on a number of parameters including but not limited to:
  • the recovered or recycled powder can be loaded via stage 17 into the EBM powder holding canisters 18 and then re-used via path 10 in the next EBM (or alternative build).
  • the powder can be returned, via path 19, to the sieve where it can be recombined with new material from subsequent EBM jobs and/or with virgin i.e. new metallic powder from supply 20. Steps 13 to 16 can then be repeated until the desired powder characteristics are achieved.
  • the modular arrangement described with reference to figure 2 provides a process, in the form of a series of discrete steps that not only allow for the recovery of metallic powder but allow for the grading or characterisation of the powder for re-use in subsequent EBM jobs.
  • An invention described herein extends beyond the module arrangement described with reference to figure 2 to include a more comprehensive apparatus and method for powder characterisation. Specifically according to an invention described herein the amount of metallic powder that is used or retained at various stages is determined through the process steps. This provides a number of technical advantages as described below.
  • a further problem is where residual metallic powder in the modular system shown in figure 2 builds up during one or more cycles of manufacture using a first metallic powder. Switching to a second powder for a new component may initially appear to provide adequate characterisation of the blend at the blend stage but a sudden release or movement of a build up of powder within the process may create a pocket of material which is not identified.
  • an invention described herein incorporates one or more weighing steps within the modular powder recover system.
  • the inventors have established that for such a modular system, a known volume of residual powder will remain in the system (within the conduits/pipes and channels that connect each module together) and may be expelled within the next build cakes cycle run. According to an invention this information can be captured for traceability/future containment/if necessary the determination of contamination risks.
  • Figure 3 corresponds to the modular arrangement shown in figure 2 but illustrates the additional component and metallic powder weight measuring points through the modular system.
  • This weight data may be obtained using a variety of commercially available weighing devices such as load cells, industrial scales or the like.
  • each determined weighing step may be recorded manually by an operative or may advantageously be communicated to a data logging device 21 and user interface/data processor 22.
  • the data logger and data processor may be configured to store data from previous builds and to develop a historical model to predict when metallic powder levels may reach unacceptable levels. For example it may be possible to determine if certain metallic powders are more prone to build up in the modules and when predetermined levels of metallic powder have been reached in the system which would cause potentially flawed EBM components.
  • the final weight measurement W 4 may advantageously be used as the input metallic material weight for the next consecutive build. It will be recognised that metallic powder remaining in the canisters will also be used in the weighing model since this identified how much powder has been consumed in the build of component 5.
  • additive manufacture is intended to refer to a technique where the components are created layer by layer until the complete component or part is formed. It will be recognised that although the main example described herein relates to EBM other forms of additive manufacturing may also benefit from the apparatus and method described herein.
  • additive manufacturing techniques which could conveniently be used include powder bed techniques such as electron beam welding, selective laser melting, selective laser sintering or direct metal laser sintering.
  • a method and apparatus described herein may be used with different AM techniques including EBM and Laser Powder Bed technologies.
  • the materials may be selected according to the manufacturing technique used.
  • parts may be manufactured from any powder where the base material displays metallic bonding.
  • electron bam melting materials include but are not limited to:
  • Laser Powder Bed materials include but are not limited to: Titanium Ti64

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Powder Metallurgy (AREA)

Abstract

Un appareil de récupération de poudre métallique de fabrication additive comprend une chambre d'élimination de poudre en communication avec un ou plusieurs modules de récupération de poudre. Chacun des modules est conçu pour récupérer la poudre métallique à partir d'un flux d'air traversant le(s) module(s) de différentes manières et pour peser les contenus du module.
PCT/GB2019/053646 2018-12-21 2019-12-20 Système de récupération de poudre WO2020128500A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1821100.3A GB2580149A (en) 2018-12-21 2018-12-21 Powder recovery system
GB1821100.3 2018-12-21

Publications (1)

Publication Number Publication Date
WO2020128500A1 true WO2020128500A1 (fr) 2020-06-25

Family

ID=65364501

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2019/053646 WO2020128500A1 (fr) 2018-12-21 2019-12-20 Système de récupération de poudre

Country Status (2)

Country Link
GB (1) GB2580149A (fr)
WO (1) WO2020128500A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190299362A1 (en) * 2018-03-27 2019-10-03 Airbus Defence and Space GmbH Al- & mg-compatible blasting material for blast cleaning thereof based on alsc powder
WO2022018446A1 (fr) * 2020-07-24 2022-01-27 Additive Manufacturing Technologies Ltd Procédé et appareil de post-traitement de pièces fabriquées de manière additive
US20220134666A1 (en) * 2020-11-05 2022-05-05 Arcam Ab Blast nozzles for additive manufacturing and methods for using the same
EP4059640A1 (fr) * 2021-03-19 2022-09-21 Collins Engine Nozzles, Inc. Échelle intégrée pour poudre dans des machines de fabrication additive
WO2023131378A1 (fr) * 2022-01-10 2023-07-13 Monaco Luigi Agents particulaires de traitement pour traitement, utilisation et procédé

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100192806A1 (en) * 2009-01-23 2010-08-05 Eos Gmbh Electro Optical Systems Method and system for recycling remaining powder of an equipment for generatively manufacturing three-dimensional objects
EP2832528A1 (fr) * 2013-07-31 2015-02-04 LIMACORPORATE S.p.A. Procédé et appareil pour la récupération et la régénération de poudre de métal dans des applications EBM
US20150298397A1 (en) * 2014-04-22 2015-10-22 Microjet Technology Co., Ltd. Powder recycling system
CN107671287A (zh) * 2017-09-26 2018-02-09 杭州先临三维云打印技术有限公司 金属3d打印一站式粉末回收及净化处理装置及方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2739998B1 (fr) * 2011-08-01 2017-10-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé de fabrication d'un miroir comprenant au moins une cavité et un miroir optique
US11390031B2 (en) * 2016-05-12 2022-07-19 Hewlett-Packard Development Company, L.P. Additive manufacturing system and method for post-processing
US20180141122A1 (en) * 2016-11-18 2018-05-24 General Electric Company Methods and spoke supports for additive manufacturing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100192806A1 (en) * 2009-01-23 2010-08-05 Eos Gmbh Electro Optical Systems Method and system for recycling remaining powder of an equipment for generatively manufacturing three-dimensional objects
EP2832528A1 (fr) * 2013-07-31 2015-02-04 LIMACORPORATE S.p.A. Procédé et appareil pour la récupération et la régénération de poudre de métal dans des applications EBM
US20150298397A1 (en) * 2014-04-22 2015-10-22 Microjet Technology Co., Ltd. Powder recycling system
CN107671287A (zh) * 2017-09-26 2018-02-09 杭州先临三维云打印技术有限公司 金属3d打印一站式粉末回收及净化处理装置及方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190299362A1 (en) * 2018-03-27 2019-10-03 Airbus Defence and Space GmbH Al- & mg-compatible blasting material for blast cleaning thereof based on alsc powder
WO2022018446A1 (fr) * 2020-07-24 2022-01-27 Additive Manufacturing Technologies Ltd Procédé et appareil de post-traitement de pièces fabriquées de manière additive
US20220134666A1 (en) * 2020-11-05 2022-05-05 Arcam Ab Blast nozzles for additive manufacturing and methods for using the same
EP4059640A1 (fr) * 2021-03-19 2022-09-21 Collins Engine Nozzles, Inc. Échelle intégrée pour poudre dans des machines de fabrication additive
WO2023131378A1 (fr) * 2022-01-10 2023-07-13 Monaco Luigi Agents particulaires de traitement pour traitement, utilisation et procédé

Also Published As

Publication number Publication date
GB201821100D0 (en) 2019-02-06
GB2580149A (en) 2020-07-15

Similar Documents

Publication Publication Date Title
WO2020128500A1 (fr) Système de récupération de poudre
CN105935774B (zh) 用于制造物件的过程
EP2832528B1 (fr) Procédé et appareil pour la récupération et la régénération de poudre métallique dans les applications ebm
US9364897B2 (en) Method and apparatus for reconditioning oxidized powder
JP2012515668A (ja) ３次元物体のラピッドプロトタイピングの装置からの残留粉末を再使用する方法及びシステム
Soundarapandiyan et al. The effects of powder reuse on the mechanical response of electron beam additively manufactured Ti6Al4V parts
US11027492B2 (en) Control system and method for additive manufacturing
US20210197476A1 (en) Build material reclaim in additive manufacturing
KR102090675B1 (ko) 잔여분말제거장치를 이용한 3d프린터 잔여분말 제거 방법
CN111615439B (zh) 投射材料以及喷砂处理方法
Groarke et al. Powder characterization—methods, standards, and state of the art
US11332807B2 (en) Method and system for estimating waste metal batch composition
Sukal et al. The effect of recycling powder steel on porosity and surface roughness of slm parts
Sutton et al. Recyclability of 304L stainless steel in the selective laser melting process
EP3482931B1 (fr) Procédé de fonctionnement d'au moins un appareil de fabrication additive d'objets tridimensionnels
Joju et al. Sustainability assessment of feedstock powder reuse for Directed Laser Deposition
Jacintho et al. Processing of Dry Metal Alloyed Powders
Haydari The Spreading Behaviour of Stainless Steel Powders for Additive Manufacturing
DE102023115175B3 (de) Verfahren zur Bearbeitung aktivierter und/oder kontaminierter metallischer Reststoffe und Verwendung von Big Bags
Terrassa An Investigation of the Reuse of Powder Feedstock, Process Parameters, and General Operational Procedures for Laser Engineered Net Shaping Additive Manufacturing
DE102023115174B3 (de) Verfahren zur Bearbeitung aktivierter und/oder kontaminierter metallischer Reststoffe und Verwendung von Big Bags
KR20240010709A (ko) 적층 제조용 금속 분말 관리 시스템
Ott Experimental methods of flowsheet development for hard drive recycling by preferential degradation and physical separation
Kent et al. Characterization and analysis of airborne metal exposures among workers recycling cellular phones
JP6659796B1 (ja) 金属溶融方法および金属溶融システム

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19831838

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19831838

Country of ref document: EP

Kind code of ref document: A1