Techniques are described for fabricating sinterable metallic parts by coating a metal powder with a first material, and by depositing a binder composition onto the metal powder that contains a second material, then causing the first and second materials to react to form a polymer. The first and second materials may be selected so that they combine to produce a desired polymer. The binder composition may be deposited using conventional binder jetting techniques.
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B29K 67/00 - Utilisation de polyesters comme matière de moulage
B29K 105/00 - Présentation, forme ou état de la matière moulée
A powder collection system for use in binder jetting additive manufacturing. A downdraft system includes at least one powder collection chute disposed in an interior of a binder jetting printer and adjacent to a print deck. The downdraft system is configured to receive an amount of excess build material powder dislodged from the print deck by a powder spreading process. A pneumatic conveyance system including at least one conveyance plumbing tube provides gaseous communication between the downdraft system and a powder collection unit. A gas management system provides a flow of process gas through the downdraft system and the pneumatic conveyance system at a rate sufficient to convey the excess build material powder received by the downdraft through the pneumatical conveyance system to the powder collection unit. The powder collection unit separates the excess build material powder from the flow of process gas and collects it.
A method for improving part quality in additive manufacturing involving jetting liquid metal. Limiting the amounts of magnesium and zinc in a meniscus material to below predetermined thresholds improves jetting quality. Further, ensuring an amount of Strontium is above a predetermined threshold further improves jetting of the liquid metal.
Techniques for debinding additively fabricated parts are described that do not require solvent debinding or catalytic debinding, and that may be performed using only thermal debinding in a furnace. As a result, in at least some cases debinding and sintering may take place sequentially within a single furnace. In some embodiments, the techniques may utilize particular materials as binders that allow for a thermal debinding process that does not negatively affect the parts.
B22F 10/18 - Formation d’un corps vert par mélange de liant avec du métal sous forme de filaments, p. ex. par fabrication à filaments fondus
B22F 10/64 - Traitement de pièces ou d'articles après leur formation par des moyens thermiques
B28B 1/00 - Fabrication d'objets façonnés à partir du matériau
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B29K 505/00 - Utilisation de métaux, leurs alliages ou leurs composés comme matière de remplissage
A system and method of curing build material powder. An amount of build material powder is placed in a container sealable with respect to a gaseous atmosphere present about the exterior of the container. The container is installed in a powder curing apparatus which includes a heating system and an agitation system. The heating system heats the build material powder to a temperature profile while the agitation system causes a portion of the build material powder in the container to be conveyed away from an interior surface of the container, and a second portion of the build material powder is conveyed toward an interior surface of the container.
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B22F 12/13 - Moyens de chauffage auxiliaires pour préchauffer le matériau
B28B 1/00 - Fabrication d'objets façonnés à partir du matériau
B28B 17/02 - Conditionnement du matériau avant façonnage
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
A lifting system for a binder jetting additive manufacturing printer including a lift enclosure having a sealable access port and an aperture between an interior of the lift enclosure and a printing chamber. At least one lift column fixed to the interior of the lift enclosure is configured to vertically traverse a build box lift plate from a retracted position to a raised position, wherein in the raised position the build box lift plate indexes against at least one indexing stop. A platen lift is affixed to the box lift plate and is configured to traverse a build platen in a z-lift axis.
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additiveMoyens auxiliaires pour la fabrication additiveCombinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B22F 12/90 - Moyens de commande ou de régulation des opérations, p. ex. caméras ou capteurs
A drum for storing and processing build material powder includes a cylindrical body having a plurality of circumferential rings and a plurality of internal baffles. The first end of the cylindrical body is sealed by a first cap that is tapered to an orifice. The second end of the cylindrical body is sealed by a second cap. A gas inlet configured to receive an inflow of an inert gas and a gas outlet configured to exhaust used gas from an interior of the drum.
B29C 64/255 - Enceintes pour le matériau de construction, p. ex. récipients pour poudre
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additiveMoyens auxiliaires pour la fabrication additiveCombinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B33Y 40/00 - Opérations ou équipements auxiliaires, p. ex. pour la manipulation de matériau
A method of processing build material powder for binder jetting additive manufacturing. Build material powder requiring sieving is received in a first container at a sieving station where it is passed through a first conveyance loop to a sieving unit. After sieving the build material powder is deposited in a second container. The second container of build material powder, now sieved, is taken to a feed conveyance station. The feed conveyance station passes the build material powder from the second container to a binder jetting printer via a second conveyance loop.
A gas management system for binder jetting additive manufacturing from build material powder includes a first volume at least partly within a binder jet printer that contains gas at a first pressure. A second volume encloses a plurality of process modules configured to deposit and bind build material powder. The second volume contains gas at a second pressure. A boundary between the first and second volumes includes a partition providing separation between the volumes and controls gaseous communication between them. A gas management system maintains a conditioned environment within the second volume during printing by selectively providing an inflow of process gas to the second volume. Process gas flows from the first volume to the second volume. The first pressure of the gas in the first volume is greater than the second pressure of the gas in the second volume.
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additiveMoyens auxiliaires pour la fabrication additiveCombinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
B28B 1/00 - Fabrication d'objets façonnés à partir du matériau
B33Y 30/00 - Appareils pour la fabrication additiveLeurs parties constitutives ou accessoires à cet effet
B33Y 40/00 - Opérations ou équipements auxiliaires, p. ex. pour la manipulation de matériau
C03C 27/10 - Liaison verre-verre par des procédés autres que la fusion au moyen d'un adhésif spécialement adapté à ce but
A carriage unit for binder jetting additive manufacturing of components. A carriage body is movably mounted to a carriage frame within a printer unit and configured to traverse relative to a work surface. Two compaction rollers are mounted to the carriage body. Each is configured to move between a retracted position disengaged from build material powder to a deployed condition to recoat build material powder over a work surface. A powder dispensing unit is mounted to the carriage body and configured to dispense a metered amount of the build material powder as the carriage body traverses over the work surface. A print head mounted to the carriage body is configured to deposit a predetermined pattern of binder as the carriage unit traverses relative to the work surface.
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
A method of additive manufacturing using magnetohydrodynamic (MHD) printing of liquid metal. A first current pulse is applied to a liquid metal in a nozzle to eject a droplet from a discharge orifice. A second current pulse is applied to the liquid metal in the nozzle to reduce an amplitude of the oscillations in a meniscus on the discharge orifice. The second current pulse can be either of an opposite or the same polarity as the first current pulse and is timed according to according to the oscillation.
According to some aspects, techniques are provided for fabricating sinterable metallic parts through the application of directed energy to a build material. In particular, applying energy to a build material comprising a polymer mixed with a metal powder may cause the polymer to form a cohesive structure with the metal powder. As a result, the polymer acts as a “glue” to produce a metallic green part without local melting of the metal. The green part may subsequently be sintered to remove the polymer and produce a fully dense metal part. Optionally, a step of debinding may also be performed prior to, or simultaneously with, sintering.
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
B22F 1/10 - Poudres métalliques contenant des agents lubrifiants ou liantsPoudres métalliques contenant des matières organiques
B22F 1/102 - Poudres métalliques revêtues de matériaux organiques
B29C 64/255 - Enceintes pour le matériau de construction, p. ex. récipients pour poudre
Methods of additive manufacturing, binder compositions for additive manufacturing, and articles produced by and/or associated with methods of additive manufacturing are generally described.
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B22F 1/10 - Poudres métalliques contenant des agents lubrifiants ou liantsPoudres métalliques contenant des matières organiques
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
An additive manufacturing method includes depositing a first amount of metal powder onto a powder bed of a printing system, spreading the first amount of metal powder across the powder bed to form a first layer, and depositing a first amount of binder material on the first layer. The additive manufacturing method also includes exposing the first layer to a first lighting condition, imaging the first layer under the first lighting condition to generate a first image, analyzing the first image of the first layer, and determining whether to adjust at least one printing parameter based on the analyzing.
Methods and apparatuses for making three-dimensional objects from a bindable powder are shown and described. A three-dimensional retaining wall is printed into the bindable powder to enclose the three-dimensional object and a volume of unsolidified bindable powder surrounding the three-dimensional object. In order to provide a more stable printed retaining wall, the wall is printed at less than one hundred percent image saturation and/or less than one hundred percent voxel saturation to increase the speed of solidification. One-hundred percent image saturation refers to solidifying all of the voxels (or pixels) that overlap the printed three-dimensional retaining wall, and one-hundred percent voxel saturation refers to an amount of binder per voxel that is printed to form the three-dimensional object that the printed three-dimensional retaining wall wholly or partially encloses.
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B22F 12/50 - Moyens d’alimentation en matériau, p. ex. têtes
B22F 12/90 - Moyens de commande ou de régulation des opérations, p. ex. caméras ou capteurs
A computer-implemented method includes obtaining an electronic design of a part geometry for a part for additive manufacturing; obtaining datum information indicating a sequence of one or more datums for the part geometry, obtaining a electronic scan mapping of an object additively manufactured according to the electronic design of the part geometry; sequentially aligning the electronic scan mapping to the electronic design of the part geometry according to the sequence of one or more datums indicated in the datum information; generating a deviation profile based on the alignment of the aligning the electronic scan mapping to the electronic design of the part geometry according to the sequence of one or more datums indicated in the datum information. The electronic design of the part geometry is adjusted based on the deviation profile to compensate for distortion. A further part can be manufactured based on the adjusted electronic design.
G05B 19/4093 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par la programmation de pièce, p. ex. introduction d'une information géométrique dérivée d'un dessin technique, combinaison de cette information avec l'information d'usinage et de matériau pour obtenir une information de commande, appelée programme de pièce, pour la machine à commande numérique [CN]
Support structures are used in certain additive fabrication processes to permit fabrication of a greater range of object geometries. For additive fabrication processes with materials that are subsequently sintered into a final part, an interface layer is formed between the object and support in order to inhibit bonding between adjacent surfaces of the support structure and the object during sintering.
B22F 3/22 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet pour la fabrication de pièces par coulée en moule poreux ou absorbant, c.-à-d. par coulée d'une suspension de poudre métallique dans un moule poreux, d'une façon analogue au coulage de la barbotine
B22F 3/24 - Traitement ultérieur des pièces ou objets
B22F 7/02 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de couches successives
B22F 7/04 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de couches successives avec une ou plusieurs couches non réalisées à partir de poudre, p. ex. à partir de tôles
B29C 64/106 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux
B29C 64/112 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant des gouttelettes individuelles, p. ex. de buses de jet
B29C 64/147 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des matériaux stratifiés, p. ex. fabrication d’objets stratifiés ou matériau stratifié prédécoupé selon les sections en coupe de l’objet en 3D
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B29C 64/20 - Appareil pour la fabrication additiveDétails ou accessoires à cet effet
B29C 64/268 - Agencements pour irradiation par faisceaux laserAgencements pour irradiation par faisceaux d’électrons [FE]
B29C 64/386 - Acquisition ou traitement de données pour la fabrication additive
B29C 64/40 - Structures de support des objets en 3D pendant la fabrication, lesdites structures devant être sacrifiées après réalisation de la fabrication
Systems and methods for providing inert manufacturing and processing environments. In certain embodiments, a build box having green parts that were manufactured via binder jetting additive manufacturing is sealed with a lid and heat cured in an oven. A supply of process gas is delivered to the build box to provide an inert environment within the build box during the heating process, which results in an exhaust of gaseous species from the build box and prevents contamination from the ambient environment. In certain embodiments, copper-alloy parts are manufactured via binder jetting additive manufacturing in an inert environment to achieve higher final densities after post-processing and sintering.
The devices, systems, and methods of the present disclosure are directed to spreader positioning techniques for consistent and rapid layer-by-layer fabrication of three-dimensional objects formed through binder jetting. For example, an additive manufacturing system may include a roller and a print carriage. In a layer-by-layer fabrication process, the roller may move in advance of the print carriage over a dimension of a volume to spread a respective layer of powder onto which the print carriage delivers a binder. Controlling the position of the roller may facilitate achieving consistent layer characteristics which, in turn, may facilitate fabrication of high quality parts.
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additiveMoyens auxiliaires pour la fabrication additiveCombinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B22F 10/30 - Commande ou régulation des opérations
A process for 3D printing metal components involves providing a container of powdered metal material, providing a platform, employing a horizontally mobile feeding and compressing mechanism to dispense specified quantities of the metal material to create multiple layers, and subsequently compacting each of these layers. Additionally, a binder is applied to the surface of each layer. Furthermore, the feeding and compressing mechanism moves forward to establish a layer of the metal material and then retracts to compact the newly formed layer.
Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from parts by directing gas onto, or near to, the powder. While fragile green parts, such as green parts produced by binder jetting, may be fragile with respect to scraping or impacts, such parts may nonetheless be resistance to damage from directed gas, even if directed at a high pressure. Techniques for depowdering through directed application of gas may be automated, thereby mitigating challenges associated with manual depowdering operations.
Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from parts through vibration of the powder, the parts, and/or structures mechanically connected to the powder and/or parts. For instance, the application of vibration may dislodge, aerate and/or otherwise increase the flowability of regions of the powder, thereby making it easier to remove the powder with a suitable means. Techniques for depowdering through vibration may be automated, thereby mitigating challenges associated with manual depowdering operations.
The present invention relates to powder-layer three-dimensional printers (2) having a discrete supply hopper (340) and a recoater (20). The discrete supply hopper (340) is configured to transfer a build powder to the recoater (20) in a manner that enhances the uniformity of build powder layers that are dispensed from the recoater (20). In some embodiments, at least one of the discrete supply hopper and the powder hopper of the recoater is adapted to selectively contact the other, seal against the other, and/or have one partially inserted inside the other so as to diminish or prevent powder pluming during the transfer of build powder from the discrete supply hopper to the recoater.
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
Techniques for depowdering in additive fabrication are provided. According to some aspects, techniques are provided that separate powder from additively fabricated parts through liquid immersion of the parts. Motion of the liquid, such as liquid currents, may dislodge or otherwise move powder away from additively fabricated parts to which it is adhered or otherwise proximate to. The liquid may also provide a vehicle to carry away powder from the additively fabricated parts. Removed powder may be filtered or otherwise separated from the liquid to allow recirculation of the liquid to the parts and/or to enable re-use of the powder in subsequent additive fabrication processes. Techniques for depowdering through liquid immersion may be automated, thereby mitigating challenges associated with manual depowdering operations.
B22F 3/24 - Traitement ultérieur des pièces ou objets
B08B 3/04 - Nettoyage impliquant le contact avec un liquide
B08B 3/10 - Nettoyage impliquant le contact avec un liquide avec traitement supplémentaire du liquide ou de l'objet en cours de nettoyage, p. ex. par la chaleur, par l'électricité ou par des vibrations
B08B 3/12 - Nettoyage impliquant le contact avec un liquide avec traitement supplémentaire du liquide ou de l'objet en cours de nettoyage, p. ex. par la chaleur, par l'électricité ou par des vibrations par des vibrations soniques ou ultrasoniques
B08B 3/14 - Enlèvement des déchets, p. ex. des étiquettes, se trouvant dans le liquide de nettoyage
B22F 10/00 - Fabrication additive de pièces ou d’objets à partir de poudres métalliques
B33Y 40/20 - Posttraitement, p. ex. durcissement, revêtement ou polissage
This invention relates to a method for course correction of a robotic arm typically implemented for 3D printing applications. Arbitrary offsets along X-, Y-, Z-, and theta Z-axes can be applied, enabling correction of arbitrary repeatable errors in the arm's nominal (uncorrected) trajectory. By applying those offsets in the reverse, their effects can be cancelled or reduced to achieve repeatable near-planarity in the path of travel.
A magnetohydrodynamic (MHD) jetting apparatus with improved performance. Particularly, electrodes are configured to deliver electrical current to an internal cavity of a nozzle of the jetting apparatus, and thus the molten metal inside. These electrodes are formed from or have a surface that is titanium diboride. The titanium diboride is connected to the source of electrical current by a highly conductive material with a low thermal expansion coefficient relative to the titanium diboride. Jetting apparatuses according to the disclosure have improved jetting characteristics, such as higher stable jetting frequencies, lower oxide growth on the nozzle land, leading to more time between nozzle cleanings, and a more stable jetting current from the start of jetting through steady state jetting.
Methods and systems for forming break-away supports during additive manufacturing of objects via magnetohydrodynamic (MHD) jetting. In MHD jetting supports may be required for certain overhang areas and/or other features. On a surface or surfaces that will contact the object and/or a build plate (or the like), a plasma discharge may be conducted to create a treated surface. The treated surface bonds weakly with the support relative to inter-layer bonds between construction layers. Thus, after printing is complete the supports can be easily separated without strong mechanical forces that may have otherwise damaged the printed object.
B22F 10/47 - Structures destinées à soutenir des pièces ou des articles pendant la fabrication et retirées par la suite caractérisées par des caractéristiques structurelles
Disclosed is a pumping system with reduced contamination. A vacuum pump system includes a mechanical vacuum pump mechanism within a hermetic pump that hermetically isolates the pump mechanism from ambient air. A pump inlet is hermetically sealed to the hermetic pump housing. A pump outlet is hermetically sealed at one end to the hermetic pump housing and at the other end to an inlet of a Peclet seal tube. The vacuum pump system produces a vacuum in a vacuum processing chamber. A sweep gas source injects a sweep gas into at least one of (i) the hermetic pump housing and (ii) the inlet of the Peclet seal tube. The sweep gas and a process gas flow through the Peclet seal tube to substantially isolate against the backflow of the ambient air through the Peclet seal tube.
F27B 5/16 - Aménagement des dispositifs d'alimentation en air ou gaz
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
F27D 7/06 - Production ou maintien d'une atmosphère particulière ou du vide dans les chambres de chauffage
F27B 5/04 - Fours à mouflesFours à cornuesAutres fours où la charge est complètement isolée adaptés pour le traitement de la charge sous vide ou sous atmosphère contrôlée
F27D 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
A method of de-powdering green parts manufactured via binder jetting additive manufacturing. First, a bulk de-powdering operation is conducted on the green part. Next, a fine de-powdering operation is conducted on the green part. The fine de-powdering operation includes disposing the green part within a bed of shot brush de-powdering media and agitating the bed of shot brush de-powdering media to remove from at least one surface of the green part an amount of build material powder.
According to some aspects, techniques are provided for fabricating sinterable metallic parts through the application of directed energy to a build material. In particular, applying energy to a build material comprising a polymer mixed with a metal powder may cause the polymer to form a cohesive structure with the metal powder. As a result, the polymer acts as a “glue” to produce a metallic green part without local melting of the metal. The green part may subsequently be sintered to remove the polymer and produce a fully dense metal part. Optionally, a step of debinding may also be performed prior to, or simultaneously with, sintering.
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
B22F 1/10 - Poudres métalliques contenant des agents lubrifiants ou liantsPoudres métalliques contenant des matières organiques
B22F 1/102 - Poudres métalliques revêtues de matériaux organiques
B29C 64/255 - Enceintes pour le matériau de construction, p. ex. récipients pour poudre
A compound sintering furnace with managed contamination for debinding and sintering parts. An inner insulation layer is disposed within an outer insulation layer and has an internal hot face surrounding a work zone. A sealed housing surrounds the inner insulation layer and is composed of a refractory material capable of withstanding a service temperature greater than a debinding temperature and less than a sintering temperature. An outer heater system is configured to heat at least a portion of the sealed housing and externally heat the inner insulation layer to, in conjunction with an inner heater system, heat the work zone to the debinding temperature, and inhibit condensation of a binder within and upon the inner insulation layer during a debinding process. The inner heater system is configured to internally heat the inner insulation and heat the work zone to the sintering temperature.
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
F27B 5/04 - Fours à mouflesFours à cornuesAutres fours où la charge est complètement isolée adaptés pour le traitement de la charge sous vide ou sous atmosphère contrôlée
F27B 5/14 - Aménagement des dispositifs de chauffage
33.
METATHESIS POLYMERIZATION BINDERS FOR ADDITIVE MANUFACTURING
Techniques are provided for fabricating parts via additive manufacturing by causing a component of a build material powder to contact a binder composition to thereby perform a metathesis chain-growth polymerization reaction (e.g., an olefin metathesis polymerization reaction such as ring-opening metathesis polymerization).
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
A system and method of curing build material powder. An amount of build material powder is placed in a container sealable with respect to a gaseous atmosphere present about the exterior of the container. The container is installed in a powder curing apparatus which includes a heating system and an agitation system. The heating system heats the build material powder to a temperature profile while the agitation system causes a portion of the build material powder in the container to be conveyed away from an interior surface of the container, and a second portion of the build material powder is conveyed toward an interior surface of the container.
B22F 10/322 - Commande ou régulation des opérations de l’atmosphère, p. ex. de la composition ou de la pression dans une chambre de fabrication d’un écoulement de gaz, p. ex. du débit ou de la direction
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
A drum for storing and processing build material powder includes a cylindrical body having a plurality of circumferential rings and a plurality of internal baffles. The first end of the cylindrical body is sealed by a first cap that is tapered to an orifice. The second end of the cylindrical body is sealed by a second cap. A gas inlet configured to receive an inflow of an inert gas and a gas outlet configured to exhaust used gas from an interior of the drum.
A method of processing build material powder for binder jetting additive manufacturing. Build material powder requiring sieving is received in a first container at a sieving station where it is passed through a first conveyance loop to a sieving unit. After sieving the build material powder is deposited in a second container. The second container of build material powder, now sieved, is taken to a feed conveyance station. The feed conveyance station passes the build material powder from the second container to a binder jetting printer via a second conveyance loop.
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
A lifting system for a binder jetting additive manufacturing printer including a lift enclosure having a sealable access port and an aperture between an interior of the lift enclosure and a printing chamber. At least one lift column fixed to the interior of the lift enclosure is configured to vertically traverse a build box lift plate from a retracted position to a raised position, wherein in the raised position the build box lift plate indexes against at least one indexing stop. A platen lift is affixed to the box lift plate and is configured to traverse a build platen in a z-lift axis.
A carriage unit for binder jetting additive manufacturing of components. A carriage body is movably mounted to a carriage frame within a printer unit and configured to traverse relative to a work surface. Two compaction rollers are mounted to the carriage body. Each is configured to move between a retracted position disengaged from build material powder to a deployed condition to recoat build material powder over a work surface. A powder dispensing unit is mounted to the carriage body and configured to dispense a metered amount of the build material powder as the carriage body traverses over the work surface. A print head mounted to the carriage body is configured to deposit a predetermined pattern of binder as the carriage unit traverses relative to the work surface.
Embodiments of the present disclosure are drawn to systems and methods for adjusting a three-dimensional (3D) model used in metal additive manufacturing to maintain dimensional accuracy and repeatability of a fabricated 3D part. These embodiments may be used to reduce or remove geometric distortions in the fabricated 3D part. One exemplary method may include: receiving, via one or more processors, a selection made by a user; receiving a 3D model of a desired part; retrieving at least one model constant based on the user's selection; receiving an input of at least one process variable setting from a set of process variable settings; generating transformation factors based on the at least one process variable parameter and the at least one model constant; transforming the 3D model of the desired part based on the transformation factors; and generating processing instructions for fabricating the transformed 3D model of the desired part.
B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p. ex. modélisation par dépôt de fil en fusion [FDM]
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B29C 64/379 - Manutention des objets en 3D obtenus, p. ex. à l’aide de robots
A gas management system for binder jetting additive manufacturing from build material powder includes a first volume at least partly within a binder jet printer that contains gas at a first pressure. A second volume encloses a plurality of process modules configured to deposit and bind build material powder. The second volume contains gas at a second pressure. A boundary between the first and second volumes includes a partition providing separation between the volumes and controls gaseous communication between them. A gas management system maintains a conditioned environment within the second volume during printing by selectively providing an inflow of process gas to the second volume. Process gas flows from the first volume to the second volume. The first pressure of the gas in the first volume is greater than the second pressure of the gas in the second volume.
B29C 64/371 - Conditionnement de l’environnement en utilisant un environnement autre que l’air, p. ex. un gaz inerte
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B33Y 70/10 - Composites de différents types de matériaux, p. ex. mélanges de céramiques et de polymères ou mélanges de métaux et de biomatériaux
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B29C 64/188 - Procédés de fabrication additive impliquant des opérations supplémentaires effectuées sur les couches ajoutées, p. ex. lissage, meulage ou contrôle d’épaisseur
42.
DOWNDRAFT SYSTEM FOR BINDER JETTING ADDITIVE MANUFACTURING
A powder collection system for use in binder jetting additive manufacturing. A downdraft system includes at least one powder collection chute disposed in an interior of a binder jetting printer and adjacent to a print deck. The downdraft system is configured to receive an amount of excess build material powder dislodged from the print deck by a powder spreading process. A pneumatic conveyance system including at least one conveyance plumbing tube provides gaseous communication between the downdraft system and a powder collection unit. A gas management system provides a flow of process gas through the downdraft system and the pneumatic conveyance system at a rate sufficient to convey the excess build material powder received by the downdraft through the pneumatical conveyance system to the powder collection unit. The powder collection unit separates the excess build material powder from the flow of process gas and collects it.
B22F 10/322 - Commande ou régulation des opérations de l’atmosphère, p. ex. de la composition ou de la pression dans une chambre de fabrication d’un écoulement de gaz, p. ex. du débit ou de la direction
B29C 64/255 - Enceintes pour le matériau de construction, p. ex. récipients pour poudre
B22F 12/50 - Moyens d’alimentation en matériau, p. ex. têtes
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
43.
SYSTEMS AND METHODS FOR MECHANICAL DISTORTION COMPENSATION
The present invention is directed to systems and methods for automatically generating mechanical part designs and manufacturing specifications/instructions that account for geometric distortions that may occur during manufacturing or post-processing.
Devices, systems, and methods are directed to the use of vapor phase change in binder jetting processes for forming three-dimensional objects. In general, a vapor of a first fluid may be directed to a layer of a powder spread across a build volume. The vapor may condense to reduce mobility of the particles of the powder of the layer. For example, the condensing vapor may reduce the likelihood of particle ejection from the layer and, thus, may reduce the likelihood of clogging or otherwise degrading a printhead used to jet a second fluid (e.g., a binder) to the layer. Further, or instead, the condensing vapor may increase the density of the powder in the layer which, when repeated over a plurality of layers forming a three-dimensional object, may reduce the likelihood of slumping of the part during sintering.
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
Techniques for depowdering additively fabricated parts are described in which powder is separated from parts by creating a large pressure differential between the powder and parts and a nearby location. The pressure differential may cause gas to quickly flow into and/or around the powder and parts, thereby producing a force against the powder and parts. Since the powder is generally much lighter than the parts, this force may be much more effective at moving the powder than moving the parts. As a result, the powder and parts may be separated from one another. The pressure differential may be created in various ways, such as by holding the parts and part in a chamber that is pressurized with air and/or other gas(es). Rapid depressurization of the chamber may produce the aforementioned pressure differential, leading to powder movement away from the parts.
Disclosed is a pumping system with reduced contamination. A vacuum pump system includes a mechanical vacuum pump mechanism within a hermetic pump that hermetically isolates the pump mechanism from ambient air. A pump inlet is hermetically sealed to the hermetic pump housing. A pump outlet is hermetically sealed at one end to the hermetic pump housing and at the other end to an inlet of a Peclet seal tube. The vacuum pump system produces a vacuum in a vacuum processing chamber. A sweep gas source injects a sweep gas into at least one of (i) the hermetic pump housing and (ii) the inlet of the Peclet seal tube. The sweep gas and a process gas flow through the Peclet seal tube to substantially isolate against the backflow of the ambient air through the Peclet seal tube.
F27B 5/04 - Fours à mouflesFours à cornuesAutres fours où la charge est complètement isolée adaptés pour le traitement de la charge sous vide ou sous atmosphère contrôlée
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
F27B 5/16 - Aménagement des dispositifs d'alimentation en air ou gaz
47.
SYSTEMS AND METHODS FOR PROVIDING INERT ENVIRONMENTS FOR ADDITIVE MANUFACTURING AND PROCESSING
Systems and methods for providing inert manufacturing and processing environments. In certain embodiments, a build box having green parts that were manufactured via binder jetting additive manufacturing is sealed with a lid and heat cured in an oven. A supply of process gas is delivered to the build box to provide an inert environment within the build box during the heating process, which results in an exhaust of gaseous species from the build box and prevents contamination from the ambient environment. In certain embodiments, copper-alloy parts are manufactured via binder jetting additive manufacturing in an inert environment to achieve higher final densities after post-processing and sintering.
Embodiments of the present disclosure are drawn to systems and methods for adjusting a three-dimensional (3D) model used in metal additive manufacturing to maintain dimensional accuracy and repeatability of a fabricated 3D part. These embodiments may be used to reduce or remove geometric distortions in the fabricated 3D part. One exemplary method may include: receiving, via one or more processors, a selection made by a user; receiving a 3D model of a desired part; retrieving at least one model constant based on the user's selection; receiving an input of at least one process variable setting from a set of process variable settings; generating transformation factors based on the at least one process variable parameter and the at least one model constant; transforming the 3D model of the desired part based on the transformation factors; and generating processing instructions for fabricating the transformed 3D model of the desired part.
B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p. ex. modélisation par dépôt de fil en fusion [FDM]
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B29C 64/379 - Manutention des objets en 3D obtenus, p. ex. à l’aide de robots
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
A retort for thermally processing sinterable objects including a retort body having an interior cavity configured to receive at least one part for sintering. The retort body includes a retort inlet, a fore volume, an inlet plenum, an outlet plenum and a retort outlet. The retort inlet is configured to be fluidly connected to a process gas inlet tube and receive a flow of process gas. The retort inlet is fluidly connected to the fore volume, the fore volume being configured to receive a cleansing object. The fore volume is fluidly connected to the inlet plenum, which is fluidly connected to the interior cavity, which is in turn fluidly connected to the outlet plenum. The outlet plenum is fluidly connected to the retort outlet which is configured to be fluidly connected to an effluent gas outlet tube via a Peclet sealing element.
F27B 5/16 - Aménagement des dispositifs d'alimentation en air ou gaz
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
50.
METHOD OF COMPENSATING FOR SINTERING WARPAGE DUE TO POWDER SPREADING DENSITY VARIATIONS IN BINDER JET 3D PRINTING
A method of compensating for sintering warpage due to powder spreading density variations in binder jetting additive manufacturing, including receiving an initial design file defining an object geometry, representing the object geometry as a part mesh and filling the mesh with a grid of voxels to create a voxel grid, each voxel having at least one shrinkage coefficient. For each voxel, determining a distortion factor caused by a powder density variation induced during a powder spreading process and adjusting the at shrinkage coefficient of each voxel according to its respective distortion factor. Next, a shrinkage of the grid of voxels is simulated according to a sintering process. A negative compensation is applied to the voxel grid, according to the simulated shrinkage of the grid of voxels, to form a compensated voxel grid. Lastly, the change in the voxel grid is mapped to the compensated voxel grid onto the part mesh to create a pre-processed compensated part mesh.
A method of compensating for shrinking and distortion of an object resulting from a manufacturing process. A scan is performed of an object following a manufacturing process to produce scan data. The scan data is aligned to a part mesh of the object. The part mesh is adjusted to substantially coincide with the scan data by moving part mesh vertices. Delta vectors are computed by subtracting initial part mesh vertex positions from final part mesh vertex positions. The inverse of the delta vectors are applied to the preprocessed part mesh to give a scan adjusted pre-processed shape.
G06T 7/33 - Détermination des paramètres de transformation pour l'alignement des images, c.-à-d. recalage des images utilisant des procédés basés sur les caractéristiques
G06T 17/20 - Description filaire, p. ex. polygonalisation ou tessellation
G06T 7/37 - Détermination des paramètres de transformation pour l'alignement des images, c.-à-d. recalage des images utilisant des procédés de transformation de domaine
52.
Layer Spreading and Compaction in Binder Jet 3D Printing
A method of conditioning layers of build material powder for metal additive manufacturing including depositing an amount of build material powder on a work surface, the amount of build material powder having a lower surface separated from an upper surface by a height. A roller is traversed across the work surface in a first direction while rotating the roller in a direction opposed to the first direction. During the step of traversing the roller, a lower surface of the roller extends below the upper surface of the amount of build material powder by a distance. The roller has a surface conditioning configured to, in conjunction with a controlled speed of the rotation of the roller, provide a powder density in a compacted layer within a predetermined powder density range.
A method of conditioning layers of build material powder for metal additive manufacturing including depositing an amount of build material powder on a work surface, the amount of build material powder having a lower surface separated from an upper surface by a height. A roller is traversed across the work surface in a first direction while rotating the roller in a direction opposed to the first direction. During the step of traversing the roller, a lower surface of the roller extends below the upper surface of the amount of build material powder by a distance. The roller has a surface conditioning configured to, in conjunction with a controlled speed of the rotation of the roller, provide a powder density in a compacted layer within a predetermined powder density range.
B22F 1/00 - Poudres métalliquesTraitement des poudres métalliques, p. ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 3/16 - Compactage et frittage par des opérations successives ou répétées
B22F 3/18 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet en utilisant des rouleaux presseurs
B29C 64/147 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des matériaux stratifiés, p. ex. fabrication d’objets stratifiés ou matériau stratifié prédécoupé selon les sections en coupe de l’objet en 3D
B29C 64/393 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
54.
THE JETTING PERFORMANCE OF MOLTEN METAL ALLOYS BY CONTROLLING THE CONCENTRATION OF KEY ALLOYING ELEMENTS
A method for improving part quality in additive manufacturing involving jetting liquid metal. Limiting the amounts of magnesium and zinc in a meniscus material to below predetermined thresholds improves jetting quality. Further, ensuring an amount of Strontium is above a predetermined threshold further improves jetting of the liquid metal.
A method for improving part quality in additive manufacturing involving jetting liquid metal. Limiting the amounts of magnesium and zinc in a meniscus material to below predetermined thresholds improves jetting quality. Further, ensuring an amount of Strontium is above a predetermined threshold further improves jetting of the liquid metal.
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
B22F 3/115 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet par pulvérisation de métal fondu, c.-à-d. frittage par pulvérisation, moulage par pulvérisation
Embodiments described herein relate to methods and systems for controlling the packing behavior of powders for additive manufacturing applications. In some embodiments, a method for additive manufacturing includes adding a packing modifier to a base powder to form a build material. The build material may be spread to form a layer across a powder bed, and the build material may be selectively joined along a two-dimensional pattern associated with the layer. The steps of spreading a layer of build material and selectively joining the build material in the layer may be repeated to form a three-dimensional object. The packing modifier may be selected to enhance one or more powder packing and/or powder flow characteristics of the base powder to provide for improved uniformity of the additive manufacturing process, promote sintering, and/or to enhance the properties of the manufactured three-dimensional objects.
Devices, systems, and methods are directed to applying magnetohydrodynamic forces to liquid metal to eject liquid metal along a controlled pattern, such as a controlled three-dimensional pattern as part of additive manufacturing of an object. Electric current delivered to a meniscus of the liquid metal in a quiescent state can be directed to exert a pullback force on the liquid metal. The pullback force can be sufficient to draw the liquid metal, in the quiescent state, in a direction toward the nozzle to reduce the likelihood of unintended wetting of surfaces of the nozzle between uses of the nozzle.
B05B 5/043 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique utilisant la charge par induction
B05B 5/025 - Appareillages pour délivrer le matériau, p. ex. pistolets de pulvérisation électrostatique
B22F 3/115 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet par pulvérisation de métal fondu, c.-à-d. frittage par pulvérisation, moulage par pulvérisation
B22F 10/00 - Fabrication additive de pièces ou d’objets à partir de poudres métalliques
B22F 10/38 - Commande ou régulation des opérations pour obtenir des caractéristiques spécifiques du produit, p. ex. le lissage de la surface, la densité, la porosité ou des structures creuses
B22F 10/43 - Structures destinées à soutenir des pièces ou des articles pendant la fabrication et retirées par la suite caractérisées par le matériau
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additiveMoyens auxiliaires pour la fabrication additiveCombinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
Improved formulations of an interface material are described. These formulations may, in at least some cases, match and/or accommodate dimensional changes in the part and/or support structure throughout thermal processing (e.g., debind and sintering, or sintering only). Furthermore, these formulations may also maintain the property of resisting bonding between the interface and the part and/or support structure while also maintaining a physical separation between the part and support structure. In some cases, an improved interface material may accommodate strain associated with the shrinkage of a part (and optionally support structure) during sintering while also minimally impacting the ability of the part (and optionally support structure) to shrink or otherwise change in dimension. In some cases, the interface material may include one or more fugitive phases that are removed during thermal processing (e.g., through pyrolysis of the fugitive phase(s)).
Improved formulations of an interface material are described. These formulations may, in at least some cases, match and/or accommodate dimensional changes in the part and/or support structure throughout thermal processing (e.g., debind and sintering, or sintering only). Furthermore, these formulations may also maintain the property of resisting bonding between the interface and the part and/or support structure while also maintaining a physical separation between the part and support structure. In some cases, an improved interface material may accommodate strain associated with the shrinkage of a part (and optionally support structure) during sintering while also minimally impacting the ability of the part (and optionally support structure) to shrink or otherwise change in dimension. In some cases, the interface material may include one or more fugitive phases that are removed during thermal processing (e.g., through pyrolysis of the fugitive phase(s)).
B22F 7/06 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p. ex. pour former des outils à embouts rapportés
B22F 10/18 - Formation d’un corps vert par mélange de liant avec du métal sous forme de filaments, p. ex. par fabrication à filaments fondus
B22F 10/43 - Structures destinées à soutenir des pièces ou des articles pendant la fabrication et retirées par la suite caractérisées par le matériau
B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p. ex. modélisation par dépôt de fil en fusion [FDM]
B29C 64/40 - Structures de support des objets en 3D pendant la fabrication, lesdites structures devant être sacrifiées après réalisation de la fabrication
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Computer-assisted additive manufacturing machines for
producing three-dimensional parts for further manufacture in
the fields of 3D printing and additive manufacturing. 3D printing of custom three-dimensional parts on a per-order
basis with the aid of rapid prototyping machines. Design and development of rapid prototyping machines and
consultation services in connection therewith.
62.
Z-AXIS MEASUREMENT AND CONTROL IN 3D PRINTING OF METAL
Disclosed is the measurement and control of height in the Z-axis of layers produced in an additive manufacturing process. The height of layers being deposited can be monitored, which may involve the use of a fiducial tower to measure a global errors or optical or other means to measure layers on a layer-by-layer basis. Droplet size, pitch and other conditions may be modified to ameliorate or correct detected errors.
A dross removal system for magnetohydrodynamic additive. A vacuum source is used to create a pressure differential at a nozzle opening sufficient to collect dross from a pool of molten metal. The dross and any collected molten metal can be captured in a waste bin for later disposal. 308
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additiveMoyens auxiliaires pour la fabrication additiveCombinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
B33Y 40/00 - Opérations ou équipements auxiliaires, p. ex. pour la manipulation de matériau
B08B 5/04 - Nettoyage par aspiration, avec ou sans action auxiliaire
B08B 13/00 - Accessoires ou parties constitutives, d'utilisation générale, des machines ou appareils de nettoyage
A controlled environment system for the additive manufacture of metal objects using magnetohydrodynamic jetting. A sealing plate is placed against an Péclet gap seal of a volume enclosure. A flow of inert gas is used to maintain a high-purity volume in the interior of the volume enclosure. A print head accesses the interior and delivers build material through a hole in the sealing plate. A build plate is movable relative to the sealing plate within the interior of the volume enclosure on which objects can be fabricated.
The present disclosure includes a furnace for heating and/or sintering one or more three-dimensional printed metal parts. The furnace includes a furnace chamber, insulation within the furnace chamber, a retort within the furnace chamber, and one or more getters containing getter material. The retort is configured to receive the one or more three-dimensional printed metal parts.
F27B 5/04 - Fours à mouflesFours à cornuesAutres fours où la charge est complètement isolée adaptés pour le traitement de la charge sous vide ou sous atmosphère contrôlée
F27B 5/16 - Aménagement des dispositifs d'alimentation en air ou gaz
F27D 17/00 - Dispositions pour l'utilisation de la chaleur perdueDispositions pour l'utilisation ou pour l'élimination des gaz résiduaires
F27D 7/06 - Production ou maintien d'une atmosphère particulière ou du vide dans les chambres de chauffage
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
07 - Machines et machines-outils
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
3D printing of custom three-dimensional parts on a per-order basis with the aid of rapid prototyping machines Computer-assisted additive manufacturing machines for producing three-dimensional parts for further manufacture in the fields of 3D printing and additive manufacturing Design and development of rapid prototyping machines and consultation services in connection therewith
69.
TWO-STAGE SINTERING FURNACE AND METHODS OF OPERATING THEREOF
A sintering and debinding system includes a debinding chamber configured to switch between an open state and a closed state, the open state being configured to permit receipt or removal of at least one part within or from the debinding chamber and a sintering chamber operably connected to the debinding chamber and being vertically positioned above or below the debinding chamber. The sintering system also includes a shelf structure configured to receive the at least one part, the shelf structure being movable between the debinding chamber and the sintering chamber and a gate valve configured to switch between an open state and a closed state, the gate valve being configured to selectively permit or block fluid communication between the debinding chamber and the sintering chamber. The gate valve is configured such that: when the gate valve is in an open state, fluid communication between the debinding chamber and the sintering chamber is permitted and the shelf structure is movable between the debinding chamber and the sintering chamber. The gate valve is further configured such that, when the gate valve is in the closed state, fluid communication between the debinding chamber and sintering chamber is restricted, and at least one of: (i) movement of the shelf structure between the debinding chamber and the sintering chamber is restricted or (ii) the debinding chamber is configured to permit receipt within and removal of the at least one part from the debinding chamber.
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
F27B 9/14 - Fours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité caractérisés par le trajet de la charge pendant le traitementFours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité caractérisés par le procédé de déplacement de la charge pendant le traitement
F27B 17/00 - Fours d'un genre non couvert par l'un des groupes
A furnace may include an outer wall defining a chamber, the chamber including an internal cavity configured to receive one or more parts, at least one heater positioned within the chamber, the at least one heater being configured to generate temperatures of at least about 800 degrees Celsius within the internal cavity, and a vacuum pump configured to apply a vacuum to at least a portion of the chamber. The furnace may also include at least one layer of inner insulation and at least one layer of outer insulation disposed outward of the inner insulation with respect to the chamber, the at least one layer of outer insulation being sealed with respect to the at least one layer of inner insulation.
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
B33Y 40/20 - Posttraitement, p. ex. durcissement, revêtement ou polissage
F27B 5/04 - Fours à mouflesFours à cornuesAutres fours où la charge est complètement isolée adaptés pour le traitement de la charge sous vide ou sous atmosphère contrôlée
F27B 5/08 - Aménagement des garnissages réfractaires
F27B 5/18 - Aménagement des dispositifs de commande, de surveillance, d'alarme ou des dispositifs similaires
Systems and methods are disclosed for forming a three-dimensional object using additive manufacturing. One method includes depositing a first amount of powder material onto a powder print bed of a printing system, spreading the first amount of powder material across the powder print bed to form a first layer, measuring a density of powder material within the powder print bed, and adjusting a parameter of the printing system based on the measured density of the powder material within the powder print bed.
B22F 10/37 - Commande ou régulation des opérations des caractéristiques du lit de poudre, p. ex. de la densité
B29C 64/00 - Fabrication additive, c.-à-d. fabrication d’objets en trois dimensions [3D] par dépôt additif, agglomération additive ou stratification additive, p. ex. par impression en 3D, stéréolithographie ou frittage laser sélectif
B33Y 30/00 - Appareils pour la fabrication additiveLeurs parties constitutives ou accessoires à cet effet
B22F 10/00 - Fabrication additive de pièces ou d’objets à partir de poudres métalliques
Mold lock is remediated by performing a layer-by-layer, two-dimensional analysis to identify unconstrained removal paths for any support structure or material within each two-dimensional layer, and then ensuring that aligned draw paths are present for all adjacent layers, all as more specifically described herein. Where locking conditions are identified, a sequence of modification rules are then applied, such as by breaking support structures into multiple, independently removable pieces. By addressing mold lock as a series of interrelated two-dimensional geometric problems, and reserving three-dimensional remediation strategies for more challenging, complex mold lock conditions, substantial advantages can accrue in terms of computational speed and efficiency.
G05B 19/4099 - Usinage de surface ou de courbe, fabrication d'objets en trois dimensions 3D, p. ex. fabrication assistée par ordinateur
B29C 64/40 - Structures de support des objets en 3D pendant la fabrication, lesdites structures devant être sacrifiées après réalisation de la fabrication
B29C 64/386 - Acquisition ou traitement de données pour la fabrication additive
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B28B 17/00 - Parties constitutives ou accessoires de l'appareillage à façonner le matériauMesures auxiliaires prises en liaison avec un tel façonnage
B28B 1/00 - Fabrication d'objets façonnés à partir du matériau
H04N 1/409 - Amélioration des contours ou des détailsSuppression du bruit ou des erreurs
B33Y 50/00 - Acquisition ou traitement de données pour la fabrication additive
The present invention generally relates to compositions comprising a binder and a metal powder, and associated methods. Some compositions provided include a polymer and a metal powder. Some compositions provided include a binder formulation and a metal powder. The binder formulation generally includes a first liquid and a polymer. The binder formulation may be a solution. The polymer may include a nitrogen-containing repeat unit. The metal powder may include a noble metal. Some methods provided include combining a metal powder with a binder formulation. Methods provided include but are not limited to additive manufacturing processes and injection molding processes.
B22F 1/00 - Poudres métalliquesTraitement des poudres métalliques, p. ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 1/10 - Poudres métalliques contenant des agents lubrifiants ou liantsPoudres métalliques contenant des matières organiques
B22F 1/107 - Poudres métalliques contenant des agents lubrifiants ou liantsPoudres métalliques contenant des matières organiques contenant des matériaux organiques comportant des solvants, p. ex. pour la coulée en moule poreux ou absorbant
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B33Y 70/10 - Composites de différents types de matériaux, p. ex. mélanges de céramiques et de polymères ou mélanges de métaux et de biomatériaux
B22F 1/052 - Poudres métalliques caractérisées par la dimension ou la surface spécifique des particules caractérisées par un mélange de particules de dimensions différentes ou par la distribution granulométrique des particules
B29K 33/00 - Utilisation de polymères d'acides non saturés ou de leurs dérivés comme matière de moulage
An apparatus, and corresponding method, feeds build material, in the form of rods, to a drive system in a three-dimensional (3D) printing system. The apparatus dispenses a rod to a media tray and into a first groove defined by a flipper arm. The flipper arm is in a substantially horizontal position supported by a bottom ridge of the media tray. The flipper arm is rotated away from the bottom ridge and toward a stopper coupled to the flipper arm and the media tray. The stopper defines a second groove. The apparatus deposits the rod into the drive system via a feed shaft formed by the first and second grooves of the flipper arm and stopper, respectively. The apparatus enables high-speed 3D printing using the rods by overcoming challenges in loading the rods due to brittleness of the rods.
B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p. ex. modélisation par dépôt de fil en fusion [FDM]
B33Y 40/00 - Opérations ou équipements auxiliaires, p. ex. pour la manipulation de matériau
B33Y 30/00 - Appareils pour la fabrication additiveLeurs parties constitutives ou accessoires à cet effet
B29C 64/255 - Enceintes pour le matériau de construction, p. ex. récipients pour poudre
An improved additive manufacturing system for manufacturing metal parts by magnetohydrodynamic printing liquid metal. A monitoring system including at least one camera capturing light reflected from a strobe light source. Images of the droplets are captured during their jetting and analyzed to determine whether the jetting performance is meeting specifications. A nozzle of the system has a nozzle bottom and a nozzle stem extending outward therefrom on which a meniscus of liquid metal can form. The nozzle is cleaned by bringing a ceramic rod in the vicinity of the nozzle and jetting a bead of metal which is rotated against the nozzle to remove an amount of dross.
A camera assembly is employed in additive manufacturing to improve the fidelity of a printed object. The camera may scan the surface of a build plate of a 3D printer and an object as it is being printed to generate image data. The image data is processed to detect errors in the build plate or printed object. The printer compensates for the detected errors, which can including modifying the printer configuration and/or modifying the instructions for printing a given object. Using the updated configuration, subsequent objects may then be printed, under a corrected process, to produce an object with fidelity to an original object model.
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B22F 3/22 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet pour la fabrication de pièces par coulée en moule poreux ou absorbant, c.-à-d. par coulée d'une suspension de poudre métallique dans un moule poreux, d'une façon analogue au coulage de la barbotine
B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B29C 64/386 - Acquisition ou traitement de données pour la fabrication additive
77.
Methods and systems for generatively designing assemblies of mechanical parts
Methods and systems are disclosed for generatively designing a model of an assembly of mechanical parts. One method includes receiving a first set of constraints for a first part; determining a spatial relationship between the first part and a second part; updating the first set of constraints for the first part based on at least the spatial relationship between the first part and the second part; updating a second set of constraints for the second part based on at least the updated first set up constraints and/or the spatial relationship between the first part and the second part; and generating a model for the first part based on the updated first set of constraints.
The devices, systems, and methods of the present disclosure are directed to spreader positioning techniques for consistent and rapid layer-by-layer fabrication of three-dimensional objects formed through binder jetting. For example, an additive manufacturing system may include a roller and a print carriage. In a layer-by-layer fabrication process, the roller may move in advance of the print carriage over a dimension of a volume to spread a respective layer of powder onto which the print carriage delivers a binder. Controlling the position of the roller may facilitate achieving consistent layer characteristics which, in turn, may facilitate fabrication of high quality parts.
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additiveMoyens auxiliaires pour la fabrication additiveCombinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
A method of additive manufacturing using magnetohydrodynamic (MHD) printing of liquid metal. A first current pulse is applied to a liquid metal in a nozzle to eject a droplet from a discharge orifice. A second current pulse is applied to the liquid metal in the nozzle to reduce an amplitude of the oscillations in a meniscus on the discharge orifice. The second current pulse can be either of an opposite or the same polarity as the first current pulse and is timed according to according to the oscillation.
05 - Produits pharmaceutiques, vétérinaires et hygièniques
Produits et services
Resin for use in 3D printing applications including medical
applications, dental applications, artificial teeth,
artificial gums, orthodontic application and vision-based
applications.
81.
Binder jetting in additive manufacturing of inhomogeneous three-dimensional parts
Devices, systems, and methods are directed to binder jetting for forming three-dimensional parts having controlled, macroscopically inhomogeneous material composition. In general, a binder may be delivered to each layer of a plurality of layers of a powder of inorganic particles. An active component may be introduced, in a spatially controlled distribution, to at least one of the plurality of layers such that the binder, the powder of inorganic particles, and the active component, in combination, form an object. The object may be thermally processed into a three-dimensional part having a gradient of one or more physicochemical properties of a material at least partially formed from thermally processing the inorganic particles and the active component of the object.
C04B 35/565 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de carbures à base de carbure de silicium
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B33Y 70/10 - Composites de différents types de matériaux, p. ex. mélanges de céramiques et de polymères ou mélanges de métaux et de biomatériaux
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B22F 12/55 - Moyens multiples d’alimentation en matériau
B28B 1/00 - Fabrication d'objets façonnés à partir du matériau
C09D 11/38 - Encres pour l'impression à jet d'encre caractérisées par des additifs non macromoléculaires autres que les solvants, les pigments ou les colorants
C09D 11/54 - Encres à base de deux liquides, l’un des liquides étant l’encre, l’autre liquide étant une solution de réaction, un fixateur ou une solution de traitement pour l’encre
B22F 1/10 - Poudres métalliques contenant des agents lubrifiants ou liantsPoudres métalliques contenant des matières organiques
B22F 12/33 - Plate-formes ou substrats de translation dans le plan de dépôt
B22F 10/30 - Commande ou régulation des opérations
82.
SYSTEMS, METHODS, AND DEVICES FOR ACTUATION OF BUILD MATERIAL
An actuation method comprising applying a force to a first rod of build material disposed within an actuation volume. The first rod of build material may include at least one metal. The method may further comprise moving the first rod of build material in a direction substantially parallel to or substantially coaxial with a longitudinal axis of the first rod of build material toward an extrusion head and loading a second rod of build material into the actuation volume. The second rod of build material may include at least one metal. A longitudinal axis of the second rod may be substantially coaxial with the longitudinal axis of the first rod. The applying step and the moving step may be repeated for the second rod of build material.
B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p. ex. modélisation par dépôt de fil en fusion [FDM]
A nozzle assembly for metal additive manufacturing using magnetohydrodynamic jetting. A nozzle defines a reservoir and a discharge region having a discharge orifice. A thick film heating system disposed on an exterior of the nozzle and including a first contact pad and a second contact pad connected by a heating pathway heats build material in the nozzle to a liquid state. A first electrode and a second electrode together configured to deliver an electrical current through the liquid build material in the discharge region while a magnet system delivers a magnetic field perpendicular the electrical current, thereby jetting liquid metal to form successive build layers.
The devices, systems, and methods of the present disclosure are directed to powder spreading and binder distribution techniques for consistent and rapid layer-by-layer fabrication of three-dimensional objects formed through binder jetting. For example, a powder may be spread to form a layer along a volume defined by a powder box, a binder may be deposited along the layer to form a layer of a three-dimensional object, and the direction of spreading the layer and depositing the binder may be in a first direction and in a second direction, different from the first direction, thus facilitating rapid formation of the three-dimensional object with each passage of the print carriage over the volume. Powder delivery, powder spreading, thermal energy delivery, and combinations thereof, may facilitate consistently achieving quality standards as the rate of fabrication of the three-dimensional object is increased.
B22F 1/10 - Poudres métalliques contenant des agents lubrifiants ou liantsPoudres métalliques contenant des matières organiques
B22F 3/16 - Compactage et frittage par des opérations successives ou répétées
B22F 3/18 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet en utilisant des rouleaux presseurs
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B33Y 30/00 - Appareils pour la fabrication additiveLeurs parties constitutives ou accessoires à cet effet
B33Y 40/00 - Opérations ou équipements auxiliaires, p. ex. pour la manipulation de matériau
B22F 12/00 - Appareils ou dispositifs spécialement adaptés à la fabrication additiveMoyens auxiliaires pour la fabrication additiveCombinaisons d’appareils ou de dispositifs pour la fabrication additive avec d’autres appareils ou dispositifs de traitement ou de fabrication
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
B22F 10/85 - Acquisition ou traitement des données pour la commande ou la régulation de procédés de fabrication additive
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
B22F 12/41 - Moyens de rayonnement caractérisés par le type, p. ex. laser ou faisceau d’électrons
B22F 12/47 - Moyens de rayonnement avec mouvement de translation parallèle au plan de dépôt
B22F 12/55 - Moyens multiples d’alimentation en matériau
Disclosed is a pumping system with reduced contamination. A vacuum pump system includes a mechanical vacuum pump mechanism within a hermetic pump that hermetically isolates the pump mechanism from ambient air. A pump inlet is hermetically sealed to the hermetic pump housing. A pump outlet is hermetically sealed at one end to the hermetic pump housing and at the other end to an inlet of a Peclet seal tube. The vacuum pump system produces a vacuum in a vacuum processing chamber. A sweep gas source injects a sweep gas into at least one of (i) the hermetic pump housing and (ii) the inlet of the Peclet seal tube. The sweep gas and a process gas flow through the Peclet seal tube to substantially isolate against the backflow of the ambient air through the Peclet seal tube.
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
F27B 5/04 - Fours à mouflesFours à cornuesAutres fours où la charge est complètement isolée adaptés pour le traitement de la charge sous vide ou sous atmosphère contrôlée
86.
THERMAL DEBINDING TECHNIQUES FOR ADDITIVE MANUFACTURING AND RELATED SYSTEMS AND METHODS
Techniques for debinding additively fabricated parts are described that do not require solvent debinding or catalytic debinding, and that may be performed using only thermal debinding in a furnace. As a result, in at least some cases debinding and sintering may take place sequentially within a single furnace. In some embodiments, the techniques may utilize particular materials as binders that allow for a thermal debinding process that does not negatively affect the parts.
Devices, systems, and methods are directed to coated powder for three dimensional additive manufacturing. The powder may include a first material coated with a second material, with the coating advantageously resisting segregation of the first material and the second material during handling processes associated with fabrication. The reduced segregation of the first material and the second material may facilitate forming finished three-dimensional parts with improved homogeneity of microstructures and, thus, improved physicochemical properties. More generally, the reduced segregation of the first material and the second material achievable through coating the first material with the second material may facilitate binder jet fabrication using a wider array of combinations of first material and second material as compared to binder jet fabrication using mixtures of constituent powders of the first material and the second material.
Techniques for depowdering additively fabricated parts are described in which powder is separated from parts by creating a large pressure differential between the powder and parts and a nearby location. The pressure differential may cause gas to quickly flow into and/or around the powder and parts, thereby producing a force against the powder and parts. Since the powder is generally much lighter than the parts, this force may be much more effective at moving the powder than moving the parts. As a result, the powder and parts may be separated from one another. The pressure differential may be created in various ways, such as by holding the parts and part in a chamber that is pressurized with air and/or other gas(es). Rapid depressurization of the chamber may produce the aforementioned pressure differential, leading to powder movement away from the parts.
Systems, methods, components, and materials are disclosed for stereolithographic fabrication of three-dimensional, dense objects. A resin including at least one component of a binder system and dispersed particles can be exposed to an activation light source. The activation light source can cure the at least one component of the binder system to form a green object, which can include the at least one component of the binder system and the particles. A dense object can be formed from the green object by removing the at least one component of the binder system in an extraction process and thermally processing particles to coalesce into the dense object.
B29C 64/124 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant des couches de liquide à solidification sélective
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B33Y 70/10 - Composites de différents types de matériaux, p. ex. mélanges de céramiques et de polymères ou mélanges de métaux et de biomatériaux
G03F 7/00 - Production par voie photomécanique, p. ex. photolithographique, de surfaces texturées, p. ex. surfaces impriméesMatériaux à cet effet, p. ex. comportant des photoréservesAppareillages spécialement adaptés à cet effet
A61K 6/807 - Préparations pour la fabrication de dents artificielles, l’obturation ou le recouvrage des dents comprenant des céramiques comprenant de l’oxyde de magnésium
A61K 6/818 - Préparations pour la fabrication de dents artificielles, l’obturation ou le recouvrage des dents comprenant des céramiques comprenant de l’oxyde de zirconium
A61K 6/822 - Préparations pour la fabrication de dents artificielles, l’obturation ou le recouvrage des dents comprenant des céramiques comprenant de l’oxyde de métaux des terres rares
C04B 35/01 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes
B22F 1/10 - Poudres métalliques contenant des agents lubrifiants ou liantsPoudres métalliques contenant des matières organiques
B22F 10/12 - Formation d’un corps vert par photopolymérisation, p. ex. stéréolithographie [SLA] ou traitement numérique de la lumière [DLP]
B22F 10/50 - Traitement des pièces ou des articles pendant leur formation, p. ex. traitements appliqués aux couches fusionnées pendant leur formation
A61L 27/46 - Matériaux composites, c.-à-d. en couches ou contenant un matériau dispersé dans une matrice constituée d'un matériau analogue ou différent comportant une matrice macromoléculaire avec des charges inorganiques contenant du phosphore
B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
B29C 64/135 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant des couches de liquide à solidification sélective caractérisés par la source d'énergie à cet effet, p. ex. par irradiation globale combinée avec un masque la source d’énergie étant concentrée, p. ex. lasers à balayage ou sources lumineuses focalisées
B22F 7/04 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de couches successives avec une ou plusieurs couches non réalisées à partir de poudre, p. ex. à partir de tôles
B28B 1/00 - Fabrication d'objets façonnés à partir du matériau
B22F 7/08 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p. ex. pour former des outils à embouts rapportés avec une ou plusieurs parties non faites à partir de poudre
B33Y 80/00 - Produits obtenus par fabrication additive
B82Y 30/00 - Nanotechnologie pour matériaux ou science des surfaces, p. ex. nanocomposites
B82Y 40/00 - Fabrication ou traitement des nanostructures
C22C 9/06 - Alliages à base de cuivre avec le nickel ou le cobalt comme second constituant majeur
C22C 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
B22F 12/90 - Moyens de commande ou de régulation des opérations, p. ex. caméras ou capteurs
B22F 10/64 - Traitement de pièces ou d'articles après leur formation par des moyens thermiques
B22F 1/102 - Poudres métalliques revêtues de matériaux organiques
G03F 7/027 - Composés photopolymérisables non macromoléculaires contenant des doubles liaisons carbone-carbone, p. ex. composés éthyléniques
Techniques for depowdering additively fabricated parts are described. The techniques utilize various mechanisms to separate powder from parts. For instance, techniques for depowdering described herein may include fabrication of auxiliary structures in addition to fabrication of parts. Certain auxiliary structures may aid with depowdering operations, and may be fabricated along with parts during an additive fabrication process. The auxiliary structures may be shaped and/or have positional and/or geometrical relationships to the parts during fabrication. For instance, an auxiliary structure may include a cage structure fabricated around one or more parts.
B33Y 40/20 - Posttraitement, p. ex. durcissement, revêtement ou polissage
B08B 7/04 - Nettoyage par des procédés non prévus dans une seule autre sous-classe ou un seul groupe de la présente sous-classe par une combinaison d'opérations
B03C 1/30 - Combinaisons avec d'autres dispositifs, non prévues ailleurs
B08B 5/02 - Nettoyage par la force de jets, p. ex. le soufflage de cavités
91.
Methods and devices for three-dimensional printing
A method for binder jetting a three-dimensional (3D) object includes receiving a geometry of the object to be printed and generating instructions for printing the object. Generating the instructions includes slicing the geometry of the object into a series of cross-sectional shapes corresponding to where a binder fluid will be deposited onto a powder bed to form the object, and including a plurality of negatively printed features within at least some of the series of cross-sectional shapes, wherein an amount of binder fluid to be deposited in the negatively printed features is less than an amount of binder fluid to be deposited in a remainder of the cross-sectional shape. The amount of binder fluid to be deposited in the negatively printed features and a size of the negatively printed features is configured to allow gas to escape from the powder bed.
Methods provide for fabricating objects through additive manufacturing in a manner that compensates for deformations introduced during post-print processing, such as sintering. An initial model may be divided into a plurality of segments, the initial model defining geometry of an object. For each of the segments, modified geometry may be calculated, where the modified geometry compensates for a predicted deformation. Print parameters can then be updated to incorporate the modified geometry, where the print parameters define geometry of the printed object (e.g., configuration settings of the printer, a tool path, an object model). The object may then be printed based on the updated print parameters.
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Provision of in-person and online classes, seminars, workshops and training for individuals and companies on 3D printing systems, materials and applications; provision of virtual and online classes, seminars, workshops and training for individuals and companies on 3D printing systems, materials and applications
An additive manufacturing method includes depositing a first amount of metal powder onto a powder bed of a printing system, spreading the first amount of metal powder across the powder bed to form a first layer, and depositing a first amount of binder material on the first layer. The additive manufacturing method also includes exposing the first layer to a first lighting condition, imaging the first layer under the first lighting condition to generate a first image, analyzing the first image of the first layer, and determining whether to adjust at least one printing parameter based on the analyzing.
Methods of additive manufacturing using noble metals and/or copper metal, and binder compositions for use during the additive manufacturing methods, are generally described. In some instances, the methods of additive manufacturing include de-binding (and in some cases sintering steps) that afford metal-based composites, de-bound metal structures, and metal objects containing noble metals (e.g., silver, gold, platinum) and/or copper that have improved properties, such as relatively high densities. In certain aspects, combinations of certain metal powders (e.g., noble metal and/or copper powders) with certain binder compositions may result in improved properties of resulting metal objects produced by the additive manufacturing process, such as relatively low surface roughnesses. The binder compositions described may include a low molecular weight polymer (e.g., including an acrylic acid repeat unit) and, in some cases, a cross-linking agent.
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p. ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
In part, the disclosure relates to systems and methods of layer-by-layer assembly of composite structures such as for parts or workpieces. Various additive and subtractive processes can be used. In various embodiments, prepreg tapes that include continuous reinforcing fibers are used. In one aspect, a system that includes printer heads is provided. The printer heads may, in some embodiments, be used for manufacturing high quality continuous fiber reinforced structural parts. In some embodiments, the system includes a first printer head configured to lay down tape (e.g., a thermoplastic tape that includes reinforcing fibers).
B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p. ex. modélisation par dépôt de fil en fusion [FDM]
B29C 33/38 - Moules ou noyauxLeurs détails ou accessoires caractérisés par la matière ou le procédé de fabrication
B29C 64/194 - Procédés de fabrication additive impliquant des opérations supplémentaires effectuées sur les couches ajoutées, p. ex. lissage, meulage ou contrôle d’épaisseur pendant l’empilage des couches
B29C 70/34 - Façonnage par empilage, c.-à-d. application de fibres, de bandes ou de feuilles larges sur un moule, un gabarit ou un noyauFaçonnage par pistolage, c.-à-d. pulvérisation de fibres sur un moule, un gabarit ou un noyau et façonnage ou imprégnation par compression
B29C 70/38 - Empilage automatisé, p. ex. utilisant des robots, par application de filaments selon des modèles prédéterminés
