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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 7573. Отображено 100.
09-02-2012 дата публикации

Printing method for producing thermomagnetic form bodies for heat exchangers

Номер: US20120033002A1
Автор: Bennie Reesink, Fabian Seeler, Georg Degen, Jürgen Kaczun
Принадлежит: BASF SE

In a method for producing form bodies for heat exchangers, comprising a thermomagnetic material, said form bodies having channels for passage of a fluid heat exchange medium, a powder of the thermomagnetic material is introduced into a binder, the resulting molding material is applied to a carrier by printing methods, and the binder and if appropriate a carrier are removed subsequently and the resulting green body is sintered.

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Номер записи: 1
29-08-2013 дата публикации

Additive fabrication technologies for creating molds for die components

Номер: US20130220570A1
Автор: Alan Lawrence Jacobson, Evangelos Liasi, Harold P. Sears, James Todd Kloeb, John Philips, Larry Edward Ellis, Ronald Hasenbusch
Принадлежит: Ford Motor Co

A method comprising the use of additive manufacturing techniques for creating molds and pattern parts for subsequent use in the casting of die components and die shoes for use in die stamping processes.

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Номер записи: 2
29-08-2013 дата публикации

Molding tool with conformal portions and method of making the same

Номер: US20130220573A1
Автор: Alan Lawrence Jacobson, Bernie Gerard Marchetti, Charles Alan Rocco, Harold P. Sears, James Todd Kloeb, Jeffery N. Conley, Larry Edward Ellis, Raymond Edward Kalisz, Ronald Hasenbusch
Принадлежит: Ford Motor Co

A mold core package for forming a molding tool includes a plurality of stacked particulate layers having a binding agent. The plurality of stacked particulate layers form sacrificial walls defining a mold cavity. A sacrificial displacement line and a sacrificial displacement body extend from the mold core package and are adapted to displace a molten material applied to the mold core package.

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Номер записи: 3
07-01-2021 дата публикации

Laser-solid-forming manufacturing device and method

Номер: US20210001400A1
Автор: Chaoyue CHEN, JIANG Wang, Jianwen NIE, Ruixin ZHAO, WEI Liu, Zhongming Ren
Принадлежит: UNIVERSITY OF SHANGHAI FOR SCIENCE AND TECHNOLOGY

A laser-solid-forming manufacturing device includes a laser emitter, a magnetic field generator, and a forming platform. The laser emitter emits a laser beam which acts on a feedstock to form a molten pool. The magnetic field generator includes a spiral copper coil, a first electrode and a second electrode. The spiral copper coil is formed by spirally winding a copper tube. The first and second electrodes are arranged at respective ends of the copper tube and are used for loading a voltage to generate a magnetic field in the spiral copper coil. At any time, the spiral copper coil sleeves an action point of the laser beam and the feedstock. A corresponding laser-solid-forming manufacturing method is also presented.

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Номер записи: 4
07-01-2021 дата публикации

Three-dimensional printing

Номер: US20210001401A1
Автор: David A Champion, James Mckinnell, Mohammed S Shaarawi, Vladek Kasperchik
Принадлежит: Hewlett Packard Development Co LP

In an example of a method for three-dimensional (3D) printing, build material layers are patterned to form an intermediate structure. During patterning, a binding agent is selectively applied to define a patterned intermediate part. Also during patterning, i) the binding agent and a separate agent including a gas precursor are, or ii) a combined agent including a binder and the gas precursor is, selectively applied to define a build material support structure adjacent to at least a portion of the patterned intermediate part. The intermediate structure is heated to a temperature that activates the gas precursor to create gas pockets in the build material support structure.

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Номер записи: 5
07-01-2021 дата публикации

Printing a multi-structured 3d object

Номер: US20210001545A1
Автор: Hou T. Ng, Lihua Zhao, YAN Zhao
Принадлежит: Hewlett Packard Development Co LP

In an example implementation, a method of printing a multi-structured three-dimensional (3D) object includes forming a layer of sinterable material. The method includes processing a first portion of the sinterable material using a first set of processing parameters and processing a second portion of the sinterable material using a second set of processing parameters. The processed first and second portions form, respectively, parts of a first and second structure of a multi-structured 3D object.

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Номер записи: 6
02-01-2020 дата публикации

Particles having a sinterable core and a polymeric coating, use thereof, and additive manufacturing method using the same

Номер: US20200001359A1
Автор: Åsa Ahlin, Ragnar FERRAND DRAKE DEL CASTILLO, Sofia NILSSON
Принадлежит: HOGANAS AB

Particles each having a sinterable core and a polymeric coating on at least a part of the core, wherein the polymeric coating includes a polymer that can be removed via decomposition by heat, catalytically or by solvent treatment, and wherein the polymeric coating is present in an amount of 0.10 to 3.00% by weight, relative to the total weight of the particles, as well as the use of these particles in an additive manufacturing process such as a powder bed and inkjet head 3D printing process. The particles and the process are able to provide a green part having improved strength and are thus suitable for the production of delicate structures which require a high green strength in order to minimize the risk of structural damage during green part handling.

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Номер записи: 7
02-01-2020 дата публикации

Powder-Layer Three-Dimensional Printer with Smoothing Device

Номер: US20200001530A1
Автор: Adam W. Stroud, Anthony S. Dugan, Joseph J. Bolt, Michael John McCoy, Rick D. Lucas
Принадлежит: ExOne Co

Powder layer smoothing devices (34) adapted for use with powder-layer three-dimensional printers (10) are described. The smoothing devices (34) include a counter rotating roller (36, 50, 60) having a complex powder engaging face (38) that may include a series or plurality of flutes (54) or may include knurling (64) extending along at least a portion of the counter rotating roller (36, 50, 60) along its rotational axis (56, 66). The smoothing device (34) may also include a vertically adjustable finishing roller (35) to follow the counter rotating roller (36, 50, 60) across the build box (12) of the powder-layer three-dimensional printer (10).

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Номер записи: 8
03-01-2019 дата публикации

Additive manufacturing material for powder lamination manufacturing

Номер: US20190003019A1
Автор: Hiroyuki Ibe, Junya Yamada
Принадлежит: Fujimi Inc

A material for shaping is provided, with which it is possible to more effectively shape a shaped article that has high density while containing a ceramic. The present invention provides a material for shaping in order for use in powder additive manufacturing. This material for shaping includes a first powder that is a granulated powder containing a ceramic, and a second powder containing a metal. The second powder constitutes 10-90% by mass (exclusive) of the total of the first powder and the second powder.

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Номер записи: 9
20-01-2022 дата публикации

COMPOSITES, TOOLING AND METHODS OF MANUFACTURING THEREOF

Номер: US20220016711A1
Автор: Roy-Mayhew Joseph, Seleznev Maxim
Принадлежит:

Metal composites, tooling and methods of additively manufacturing these are disclosed. Metal objects and structures as provided herein are additively manufactured from metal having an infill pattern infiltrated with a second metal. Also provided herein are methods of forming such objects and structures. Methods include additively manufacturing a metal structure having an interior printed using an infill. Steps can further include infiltrating the printed infill of the structure with a liquid metal thereby forming a bi-metal composite. 1. A method of manufacturing a part , comprising steps of:printing the part comprising a first metal, wherein the first metal forms a wall substantially enclosing an interior volume and an infill portion within the interior volume of the part, the infill having a pattern defining structures and space within the interior volume; andinfiltrating the part with a second metal having a lower melting temperature than the first metal, the second melted metal substantially surrounding the infill patterned structures and filling the space within the interior volume of the part.2. The method of claim 1 , wherein printing the part comprises printing one or more channels within and traversing through the interior volume of the part.3. The method of claim 1 , wherein the first metal is steel and the second metal is copper.4. The method of claim 1 , wherein the first metal is steel and the second metal is magnesium.5. The method of claim 1 , wherein the first metal is titanium and the second metal is magnesium.6. The method of claim 1 , wherein the infill portion is a continuous gyroid geometry.7. The method of claim 6 , wherein the percent infill is about 50% to about 60% of the interior volume.8. The method of claim 1 , wherein the infill portion is an alternating stacked rectangular infill geometry.9. The method of claim 8 , wherein a percent infill is about 50% to about 60% of the interior volume.10. The method of claim 1 , wherein in the ...

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Номер записи: 10
20-01-2022 дата публикации

Optical assembly for additive manufacturing

Номер: US20220016712A1
Автор: Bahubali S. UPADHYE, David Masayuki Ishikawa, Eric Ng, Hou T. Ng, Sandip DESAI, Sumedh Acharya
Принадлежит: Applied Materials Inc

An additive manufacturing apparatus includes a platform, a dispenser to deliver a layers of feed material onto the platform, one or more light sources to generate a first light beam and a plurality of second light beams, a galvo mirror scanner to scan the first light beam on a layer of feed material on the platform, and a plurality of polygon mirror scanners. The galvo mirror scanner has a first field of view that spans a width of a build area of the platform, whereas, each of the plurality of polygon mirror scanners having a second field of view with the plurality of polygon mirror scanners providing a plurality of second fields of view. Each second field of view is a portion of the first field of view, and the plurality of polygon mirror scanners are positioned such that the plurality of second fields of view span the width of the build area of the platform.

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Номер записи: 11
20-01-2022 дата публикации

Methods and apparatus for the manufacture of three-dimensional objects

Номер: US20220016832A1
Автор: Adam ELLIS, Anders Hartmann, Andrew Morse, Christopher Noble, Frederik Tjellesen, Michael CALEY, Torben LANGE
Принадлежит: Stratasys Powder Production Ltd

Apparatus (1) for manufacturing a three-dimensional object from a powder, the apparatus comprising: a work surface (170); a build bed (201) having a build area (190), the build area (190) being comprised within the work surface (170), wherein successive layers of said three-dimensional object are formed in the build bed (201); a first powder supply module (2) fixedly arranged on a first side of the work surface (170), outward from a first side of the build bed (201); a second powder supply module (3) fixedly arranged on a second side of the work surface (170), outward from a second side of the build bed (201); a first powder distribution sled (300) operable to distribute powder dosed to the work surface (170) from the first powder supply module (2) while moving in a first direction from the first side of the work surface (170) towards the second side of the work surface (170), and from the second powder supply module (3) while moving in a second direction from the second side of the work surface (170) towards the first side of the work surface (170), so as to form a layer of powder within the build area (190), the first powder distribution sled (300) being driveable along a first axis across the build area (190); and a print sled (350) operable to deposit a pattern of fluid onto the layer of powder within the build area (170) to define the cross section of said object in said layer, the print sled (350) being driveable along a second axis across the build area (170); wherein the first powder distribution sled (300) comprises a first powder distribution device (320) for distributing the powder; wherein the print sled (350) comprises one or more droplet deposition heads (370) for depositing the fluid, a first radiation source assembly located on one side of the one or more droplet deposition heads (370), and a second radiation source assembly located on the other side of the one or more droplet deposition heads (370); and wherein the first powder distribution sled ( ...

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Номер записи: 12
20-01-2022 дата публикации

Recoaters with gas flow management

Номер: US20220016836A1
Автор: David W. Morganson, Diana GIULIETTI
Принадлежит: Delavan Inc

An additive manufacturing device includes a recoater configured to push powder onto a build platform. The recoater defines an advancing direction for pushing powder. A first baffle is mounted to a first end of a leading edge of the recoater and a second baffle mounted to a second end of the leading edge of the recoater opposite the first end. Each of the first and second baffles includes a base mounted to the recoater, a first wall that extends obliquely ahead of and laterally outward from the base relative to the advancing direction, and a second wall opposite the first wall. The second wall extends obliquely ahead of and laterally inward from the base relative to the advancing direction. A volume is defined between the first and second wall with capacity to collect powder as the recoater advances.

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Номер записи: 13
12-01-2017 дата публикации

Forming Facsimile Formation Core Samples Using Three-Dimensional Printing

Номер: US20170008085A1
Автор: Nicholas H. Gardiner, Philip D. Nguyen
Принадлежит: Halliburton Energy Services Inc

Methods including providing an actual formation core sample; determining an internal anatomy of at least a portion of the actual formation core sample; determining a virtual 3D model of the external anatomy of the actual formation core sample in a computer readable format, wherein the virtual 3D model of the external anatomy of the actual formation core sample is represented by successive 2D cross-sectional layers; providing a 3D printer; transmitting the virtual 3D model of the external anatomy of the actual formation core sample to the 3D printer; and printing a facsimile core sample using the 3D printer, thereby replicating at least a portion of the external anatomy of the actual formation core sample.

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Номер записи: 14
27-01-2022 дата публикации

ADDITIVE MANUFACTURING SYSTEM USING INTERLINKED REPEATING SUBUNITS

Номер: US20220024120A1
Автор: YEOH Ivan Li Chuen
Принадлежит:

An additive manufacturing system and an input material that overcomes that need to heat and extrude solidifying materials to create a three-dimensional structure. The system arranges subunits of the input material into repeating, interlinked subunits that can be arranged to manufacture a three-dimensional structure that is flexible but also has sufficient structural integrity to retain a desired shape during the additive manufacturing process or post-manufacturing usage. During the additive manufacturing process, the flexible input material can be manipulated and reformed to match the shape and structure of a target three-dimensional structure, upon which the manufactured three-dimensional structure is based. As elongated units of the input material are received by the additive manufacturing machine, the machine assembles the input material into the interlinked, repeating subunits, thereby removing the need to heat and extrude an input material to create a structure. 1. A method of producing a 3D structure via additive manufacturing , the method comprising the steps of:providing a desired 3D structure;transposing the desired 3D structure into a representation comprising repeating subunits;translating the repeating subunits representation into a sequence of material arrangement operations, such that an input material can be arranged into a plurality of interlinked subunits that resemble the desired 3D structure;inserting the input material into a stitch additive manufacturing machine;arranging the input material into the plurality of interlinked subunits that resemble the desired 3D structure;producing a stitch additive manufactured 3D structure based on the provided desired 3D structure, the produced stitch additive manufactured 3D structure including the plurality of interlinked subunits.2. The method of claim 1 , wherein the step of arranging the input material into the plurality of interlinked subunits further comprises the step of:interlinking subunits of the ...

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Номер записи: 15
27-01-2022 дата публикации

Systems, methods, and media for artificial intelligence process control in additive manufacturing

Номер: US20220024140A1
Автор: Aswin Raghav Nirmaleswaran, Damas Limoge, Matthew C. PUTMAN, Vadim Pinskiy
Принадлежит: Nanotronics Imaging Inc

Systems, methods, and media for additive manufacturing are provided. In some embodiments, an additive manufacturing system comprises: a hardware processor that is configured to: receive a captured image; apply a trained failure classifier to a low-resolution version of the captured image; determine that a non-recoverable failure is not present in the printed layer of the object; generate a cropped version of the low-resolution version of the captured image; apply a trained binary error classifier to the cropped version of the low-resolution version of the captured image; determine that an error is present in the printed layer of the object; apply a trained extrusion classifier to the captured image, wherein the trained extrusion classifier generates an extrusion quality score; and adjust a value of a parameter of the print head based on the extrusion quality score to print a subsequent layer of the printed object.

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Номер записи: 16
14-01-2021 дата публикации

Method And System For Manufacturing Small Adaptive Engines

Номер: US20210008620A1
Автор: Andrew VanOs LaTour, Christopher Paul Eonta, Stephen Ziegenfuss
Принадлежит: Molyworks Materials Corp

A method for manufacturing small adaptive engines uses a battlefield repository having cloud services that is configured to enable additive manufacturing (AM) of engine parts and assemblies. The method also uses a compilation of recipes/signatures for building the engine parts and the assemblies using additive manufacturing (AM) processes and machine learning programs. An additive manufacturing system and an alloy powder suitable for performing the additive manufacturing (AM) processes can be provided. In addition, the engine parts can be built using the additive manufacturing (AM) system, the alloy powder, the battlefield repository and the compilation of recipes/signatures. A system for manufacturing small adaptive engines includes the battlefield repository, the compilation of recipes/signatures, a foundry system for providing the alloy powder and an additive manufacturing (AM) system configured to perform the additive manufacturing (AM) processes.

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Номер записи: 17
10-01-2019 дата публикации

Dmlm build release layer and method of use thereof

Номер: US20190009332A1
Автор: Todd Jay Rockstroh
Принадлежит: General Electric Co

A method for additive manufacturing utilizing a build plate with a release layer is provided. The method includes irradiating a first layer of powder in a powder bed to form a first fused region over a support. The first release layer is provided between the first fused region and the support. The method also includes providing a given layer of powder over the powder bed and irradiating the given layer of powder in the powder bed to form a given fused region. Providing the given layer of powder over the powder bed and irradiating the given layer of powder in the powder bed to form a given fused region are repeated until the object is formed in the powder bed. The object may be formed fusing individual layers with irradiation by laser or ebeam, or by binder jetting. The method further includes separating the object from the support by melting or dissolving the first release layer.

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Номер записи: 18
03-02-2022 дата публикации

HIERARCHICAL POROUS METALS WITH DETERMINISTIC 3D MORPHOLOGY AND SHAPE VIA DE-ALLOYING OF 3D PRINTED ALLOYS

Номер: US20220032369A1
Автор: Biener Juergen, Chen Wen, Duoss Eric, Qi Zhen, Spadaccini Christopher, WORSLEY Marcus A., Ye Jianchao, Zhu Cheng
Принадлежит:

The present disclosure relates to a system for using a feedstock to form a three dimensional, hierarchical, porous metal structure with deterministically controlled 3D multiscale porous architectures. The system may have a reservoir for holding the feedstock, the feedstock including a rheologically tuned alloy ink. A printing stage may be used for receiving the feedstock. A processor may be incorporated which has a memory, and which is configured to help carry out an additive manufacturing printing process to produce a three dimensional (3D) structure using the feedstock in a layer-by-layer fashion, on the printing stage. A nozzle may be included for applying the feedstock therethrough onto the printing stage. A de-alloying subsystem may be used for further processing the 3D structure through a de-alloying operation to form a de-alloyed 3D structure having several distinct, differing pore length scales ranging from a digitally controlled macroporous architecture to a nanoporosity introduced by the de-alloying operation. 1. A system for using a feedstock to form a three dimensional , hierarchical , porous metal structure with deterministically controlled 3D multiscale porous architectures , the system comprising:an reservoir for holding the feedstock, the feedstock being formed as a rheologically tuned alloy ink;a printing stage for receiving the feedstock;a processor including a memory and configured to help carry out an additive manufacturing printing process to produce a three dimensional (3D) structure using the feedstock in a layer-by-layer fashion, on the printing stage;a nozzle for applying the feedstock therethrough onto the printing stage;a de-alloying subsystem for further processing the 3D structure through a de-alloying operation to form a de-alloyed 3D structure having several distinct, differing pore length scales ranging from a digitally controlled macroporous architecture to a nanoporosity introduced by the dealloying operation.2. The system of claim ...

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Номер записи: 19
03-02-2022 дата публикации

METHOD FOR MANUFACTURING A PART OF COMPLEX SHAPE BY PRESSURE SINTERING STARTING FROM A PREFORM

Номер: US20220032370A1
Автор: Beynet Yannick, EPHERRE Romain
Принадлежит: NORIMAT

This invention relates to a method for manufacturing a part of complex shape () by successive deposition of layers according to a technique of 3D additive printing and pressure sintering, comprising the following steps: an initial step of producing a model () from a material chosen from a porous or pulverulent material based on a metal alloy, a ceramic, a composite material and a lost material by formation of successive layers deposited according to the digitally controlled 3D additive printing technique, followed by a step of introducing a preform () made of porous or pulverulent material to be densified, derived from the model (), into a mold () filled with a sacrificial porous or pulverulent material () in addition to the preform (), the uniaxial densifying pressure sintering () then being applied to the mold () in order to form the part () which is finally extracted from the mold (). 138. A method for manufacturing a part of complex shape (; ) by successive deposition of layers according to a technique of 3D additive printing and pressure sintering , the method comprising the steps of:{'b': 1', '4, 'producing a model (; ) from a material chosen from porous or pulverulent materials based on a metal alloy, a ceramic, a composite material, or a lost material by formation of successive layers deposited according to the digitally controlled 3D additive printing technique;'}{'b': 1', '6', '1', '4', '2', '13', '9', '1', '6', '10', '2', '3', '8', '2, 'introducing a preform (; ) made of porous or pulverulent material, derived from the model (; ), to be densified into a mold () filled with sacrificial porous or pulverulent material (; ) in addition to the preform (; ), the uniaxial densifying pressure sintering () then being applied to the mold () to form the part (; ) which is finally extracted from the mold ().'}2. The method as claimed in claim 1 , wherein the 3D additive printing technique is chosen from stereolithography claim 1 , binder jetting claim 1 , controlled ...

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Номер записи: 20
03-02-2022 дата публикации

METHODS AND SYSTEMS FOR THREE-DIMENSIONAL PRINTING

Номер: US20220032372A1
Автор: ADZIMA Brian, MAGWOOD Leroy
Принадлежит:

The present disclosure provides methods for generating three-dimensional (3D) objects. The methods may comprise generating a green part corresponding to the 3D object. The green part may comprise a plurality of particles and reactants for conducting a self-propagating reaction. The reactants may be used to conduct a self-propagating reaction that generates heat sufficient to de-bind or pre-sinter the green part. External heat may be supplied to the green part to sinter the plurality of particles, thereby yielding the 3D object. The disclosure also provides methods for generating a 3D object using a resin. The methods may comprise using the resin to generate a green part, heating the green part at a first temperature to decompose a binder in the green part, heating the green part at a second temperature to decompose a polymeric material in the green part, and sintering the green part to yield the 3D object. 1. A method for generating a three-dimensional (3D) object , comprising:(a) generating a green part corresponding to said 3D object, wherein said green part comprises a plurality of particles and reactants for conducting a self-propagating reaction in said green part to yield heat;(b) using said reactants to conduct said self-propagating reaction to generate said heat in said green part, wherein said heat is sufficient to de-bind or pre-sinter said green part; and(c) subsequent to (b), supplying heat to said green part from a location external to said green part, to sinter said plurality of particles, thereby yielding said 3D object.2. The method of claim 1 , wherein said plurality of particles comprise at least one metal particle claim 1 , at least one ceramic particle claim 1 , or a combination thereof.3. The method of claim 1 , wherein said heat in (b) is sufficient to de-bind said green part.4. The method of claim 1 , wherein said heat in (b) is sufficient to pre-sinter said green part.5. The method of claim 1 , wherein said reactants comprise an oxidizer ...

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Номер записи: 21
03-02-2022 дата публикации

THREE-DIMENSIONAL PRINTING

Номер: US20220032373A1
Автор: Harvey Natalie, Kasperchik Vladek, RUUD Cory J.
Принадлежит: Hewlett-Packard Development Company, L.P.

Described herein are compositions, kits, methods, and systems for printing metal three-dimensional objects. In an example, described is a binding fluid composition for three-dimensional printing, the composition comprising: an aqueous liquid vehicle comprising at least one diol; and latex polymer particles dispersed in the aqueous liquid vehicle. 1. A binding fluid composition for three-dimensional printing , the composition comprising:an aqueous liquid vehicle comprising at least one diol; andlatex polymer particles dispersed in the aqueous liquid vehicle,wherein the latex polymer particles have an average particle size of from about 10 nm to about 300 nm,wherein the latex polymer particles are made from (A) a co-polymerizable surfactant chosen from polyoxyethylene alkylphenyl ether ammonium sulfate; sodium polyoxyethylene alkylether sulfuric ester, polyoxyethylene styrenated phenyl ether ammonium sulfate, or mixtures thereof, and (B) styrene, p-methyl styrene, α-methyl styrene, methacrylic acid, acrylic acid, acrylamide; methacrylamide, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, methyl methacrylate, hexyl acrylate, hexyl methacrylate; butyl acrylate, butyl methacrylate, ethyl acrylate, ethyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, propyl acrylate, propyl methacrylate, octadecyl acrylate, octadecyl methacrylate, stearyl methacrylate, isobornyl acrylate, tetrahydrofurfuryl acrylate, 2-phenoxyethyl methacrylate, benzyl methacrylate, benzyl acrylate, ethoxylated nonyl phenol methacrylate, ethoxylated behenyl methacrylate, polypropyleneglycol monoacrylate, isobornyl methacrylate, cyclohexyl methacrylate, cyclohexyl acrylate, t-butyl methacrylate, n-octyl methacrylate; lauryl methacrylate, tridecyl methacrylate, alkoxylated tetrahydrofurfuryl acrylate, isodecyl acrylate, isobornyl methacrylate; isobornyl acrylate, acetoacetoxyethyl methacrylate, or combinations thereof, andwherein ...

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Номер записи: 22
03-02-2022 дата публикации

SYSTEMS AND METHODS FOR POWDER BED DENSITY MEASUREMENT AND CONTROL FOR ADDITIVE MANUFACTURING

Номер: US20220032377A1
Автор: Craven Christopher Anthony, Fontana Richard Remo, Hoisington Paul A., HUDELSON George, McCambridge Matthew, Sachs Emanuel Michael
Принадлежит: Desktop Metal, Inc.

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. 1. A method of forming a three-dimensional object using additive manufacturing , the method comprising:depositing a first amount of metal powder material onto a powder print bed of a printing system;spreading the first amount of metal powder material across the powder print bed to form a first layer; andmeasuring a density of the powder material within the powder print bed.2. The method of claim 1 , further comprising:adjusting a parameter of the printing system based on the measured density of the metal powder material within the powder print bed.3. The method of claim 1 , further comprising:comparing the density of the metal powder material to a predetermined criteria.4. The method of claim 2 , wherein adjusting the parameter of the printing system includes:determining a second amount of metal powder material to be deposited onto the powder print bed based on the measured density of the metal powder material within the powder print bed;depositing the second amount of metal powder material onto the powder print; and spreading the second amount of metal powder material across the powder print bed to form a second layer.5. The method of claim 2 , wherein adjusting the parameter of the printing system includes:determining an amount of binder material to be deposited on a second layer based on the measured density of the metal powder material within the powder print bed;depositing a second amount of metal powder material onto the first layer; anddepositing the amount ...

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Номер записи: 23
03-02-2022 дата публикации

THREE-DIMENSIONAL FABRICATION APPARATUS

Номер: US20220032379A1
Автор: Aman Yasutomo, KAI Tomoki, Yamashita Yasuyuki
Принадлежит: RICOH COMPANY, LTD.

A three-dimensional fabrication apparatus includes a fabrication chamber and a roller. Powder is spread in layers in the fabrication chamber. Fabrication layers are formed of the powder bonded together and laminated in the fabrication chamber. The roller flattens the powder in the fabrication chamber. The roller includes a first helical groove region and a second helical groove region. The first helical groove region includes a first groove that moves the powder in the fabrication chamber in a first direction along a longitudinal axis of the roller as the roller rotates. The second helical groove region includes a second groove moves the powder in the fabrication chamber in a second direction opposite to the first direction as the roller rotates. 1. A three-dimensional fabrication apparatus comprising:a fabrication chamber in which powder is spread in layers and fabrication layers are to be laminated, the fabrication layers being formed of the powder bonded together; and a first helical groove region including a first groove configured to move the powder in the fabrication chamber in a first direction along a longitudinal axis of the roller as the roller rotates, and', 'a second helical groove region including a second groove configured to move the powder in the fabrication chamber in a second direction opposite to the first direction as the roller rotates., 'a roller configured to flatten the powder in the fabrication chamber, the roller including2. The three-dimensional fabrication apparatus according to claim 1 , further comprising:a movement driver configured to move the roller in a moving direction perpendicular to the longitudinal axis of the roller along an upper surface of the fabrication chamber; anda rotation driver configured to rotate the roller in a counter direction with respect to the moving direction of the roller.3. The three-dimensional fabrication apparatus according to claim 1 ,wherein the first helical groove region and the second helical groove ...

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Номер записи: 24
03-02-2022 дата публикации

METHOD FOR PRODUCING A COUNTER-FORM AND METHOD FOR MANUFACTURING A PART HAVING A COMPLEX SHAPE USING SUCH A COUNTER-FORM

Номер: US20220032498A1
Автор: Beynet Yannick, EPHERRE Romain
Принадлежит: NORIMAT

A method for producing a counter-form () for manufacturing a part having a complex shape () by pressure sintering densification. The counter-form () is formed from successive layers produced by numerically-controlled three-dimensional (3D) additive printing according to the following steps: numerically recording a three-dimensional negative of the part to be produced () in a control unit of a three-dimensional additive printing system in order to constitute the positive form of the counter-form to be produced; producing the counter-form () using a 3D additive printing technique. The part having a complex shape () is then manufactured by pressure sintering, then separated from the counter-form which is also sintered (). 1203030124203030abdab. A method for producing a counterform ( , , ) for manufacturing a part of complex shape (; ) by pressure sintering densification , the counterform (; , ) is formed of successive layers produced by digitally controlled three-dimensional (3D) additive printing , method comprising the following steps:{'b': 3', '1', '24', '20', '30', '30', '1', '24, 'i': d', 'b', 'd, 'digitally recording a three-dimensional negative () of the part to be produced (; ) in a control unit of a three-dimensional additive printing system in order to make a print of the counterform (; , ) to be produced, the rest of the counterform having faces of suitable shape for a mold for manufacturing the part (; );'}{'b': 30', '30', '20', '30', '30', '1', '24, 'i': a', 'b', 'a', 'b', 'd, 'producing the counterform (, ) by means of a 3D additive printing technique, the size of the counterform (; , ) being increased by a density stretch factor that compensates for a shrinkage in the size of the part to be manufactured (; ) in the direction of the uniaxial pressure (F) applied during the sintering densification of the part to be manufactured; and'}{'b': 20', '30', '30, 'i': a', 'b, 'completing the additive printing of the counterform (; , ) by sintering.'}2. The method ...

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Номер записи: 25
03-02-2022 дата публикации

BREAKABLE THREE DIMENSIONAL (3D) PRINTED MOLDS

Номер: US20220032508A1
Автор: DISPOTO Gary J, Huang Wei
Принадлежит: Hewlett-Packard Development Company, L.P.

Breakable three dimensional (3D) printed molds are disclosed. An example method for forming a mold having a cavity by creating a plurality of layers using an additive manufacturing process includes providing a build material; and controlling a fusion level of the build material separately for different layers of the plurality of layers to separately form the layers with a porosity corresponding to a target porosity. 1. A method for forming a mold having a cavity by creating a plurality of layers using an additive manufacturing process , the method comprising:providing a build material; andcontrolling a fusion level of the build material separately for different layers of the plurality of layers to separately form the layers with a porosity corresponding to a target porosity.2. The method of claim 1 , wherein the controlling of the fusion level includes controlling a contone level of at least one of a fusing agent or a detailing agent.3. The method of claim 1 , wherein the controlling of the fusion level includes controlling a heat transfer.4. The method of claim 1 , wherein the controlling of the fusion level includes varying at least one of a binder agent or an energy level provided to the build material.5. The method of claim 1 , wherein the controlling of the fusion level includes controlling an energy level provided to the build material.6. The method of claim 1 , wherein the controlling of the fusion level includes providing a detailing agent to the build material.7. The method of claim 1 , wherein controlling the fusion level enables a porosity of the layer to between approximately 2 percent and 45 percent.8. The method of claim 1 , wherein after formation of the mold claim 1 , further including:providing a moldable material in the cavity of the mold to form a molded part; andremoving the mold from the mold part by breaking the mold from the molded part via a breakaway feature defined by the porosity of the mold.9. The method of claim 1 , wherein the ...

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Номер записи: 26
18-01-2018 дата публикации

Porous structure and methods of making same

Номер: US20180015675A1
Автор: Ryan Lloyd Landon
Принадлежит: Smith and Nephew Inc

The present disclosure allows for more controlled modification of the input data to a Rapid Manufacturing Technologies (RMT) machinery to compensate for systematic error of the manufacturing process, such as directional build discrepancies, by performing the opposite effect to the input data. The modification is achieved with minimal unwanted distortions introduced to other portions of the structure to be built by decoupling the global scaling effects on the whole structure from the desired local effects on certain portions.

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Номер записи: 27
17-01-2019 дата публикации

Method for producing a cutting tool, and cutting tool

Номер: US20190015903A1
Автор: Sebastian Schleicher
Принадлежит: Kennametal Inc

A method for producing a cutting tool is described. This method includes the production of a tool body of the cutting tool by means of a generative production method. At least one coolant cavity that has, at least in segments, an essentially triangular cross section is in this case provided in the tool body. Moreover, a cutting tool produced by means of this method is presented. Also proposed is a cutting tool having at least one coolant cavity running therein, wherein the coolant cavity has, at least in segments, an essentially triangular cross section and the cutting tool is produced, at least in segments, by means of a generative production method.

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Номер записи: 28
16-01-2020 дата публикации

Additive Metal Manufacturing Process

Номер: US20200016653A1
Автор: G. B. Kirby Meacham
Принадлежит: Individual

Three dimensional “green” parts are formed by combining sheet layers comprising metal powder bound together by a polymer. The “green” parts are then sintered to drive off the polymer and consolidate the metal powder to produce a monolithic metal part. Particularly, the invention is directed to processes for forming and stacking the shaped sheet layers that are readily automated and preserve the high value powder metal and polymer sheet trim scrap for reuse resulting in an additive overall process with little material waste. The invention includes processes in which “green” elements formed by methods such as three dimensional printing are incorporated into the “green” stack and become an integral part of the final sintered part. It further includes processes in which “green” sheet layers are shaped by means such as hot bending or vacuum forming to provide three dimensional part features.

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Номер записи: 29
21-01-2021 дата публикации

Spherical Tantalum-Titanium Alloy Powder, Products Containing The Same, And Methods Of Making The Same

Номер: US20210016348A1
Автор: Aamir ABID, Craig Sungail
Принадлежит: Global Advanced Metals USA Inc

A tantalum-titanium alloy powder that is highly spherical is described. The alloy powder can be useful in additive manufacturing and other uses. Methods to make the alloy powder are further described as well as methods to utilize the alloy powder in additive manufacturing processes. Resulting products and articles using the alloy powder are further described.

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Номер записи: 30
26-01-2017 дата публикации

Method for manufacturing a metallic component by pre-manufactured bodies

Номер: US20170021423A1
Автор: Johan SUNDSTRÖM, Martin Östlund, Rickard Sandberg, Tomas Berglund
Принадлежит: Sandvik Intellectual Property AB

A method for manufacturing a metallic component including the steps of providing a capsule, which defines at least a portion of the shape of the metallic component, arranging metallic material in the capsule, sealing the capsule, subjecting the capsule to Hot Isostatic Pressing for a predetermined time, at a predetermined pressure and at a predetermined temperature, and optionally, removing the capsule. The metallic material is at least one pre-manufactured coherent body, which pre-manufactured coherent body being made of metallic powder, wherein at least a portion of the metallic powder is consolidated such that the metallic powder is held together into a pre-manufactured coherent body. At least one portion of the pre-manufactured coherent body is manufactured by Additive Manufacturing by subsequently arranging superimposed layers of metallic powder.

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Номер записи: 31
22-01-2015 дата публикации

Quality control of additive manufactured parts

Номер: US20150024233A1
Автор: Steven Matthew GUNTHER
Принадлежит: Boeing Co

Methods and apparatuses to fabricate additive manufactured parts with in-process monitoring are described. As parts are formed layer-by-layer, a 3D measurement of each layer or layer group may be acquired. The acquisition of dimensional data may be performed at least partially in parallel with the formation of layers. The dimensional data may be accumulated until the part is fully formed, resulting in a part that was completely inspected as it was built. The as-built measurement data may be compared to the input geometrical description of the desired part shape. Where the part fails to meet tolerance, it may be amended during the build process or rejected.

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Номер записи: 32
10-02-2022 дата публикации

METHOD OF BUILDING OBJECTS WITHIN A GREEN COMPACT OF POWDER MATERIAL BY ADDITIVE MANUFACTURING

Номер: US20220040763A1
Автор: HIRSCH Shai, Sheinman Yehoshua, SHTILERMAN Stanislav
Принадлежит: Stratasys Ltd.

A method to define construction of a green compact with at least one object embedded therein is disclosed. The method includes receiving three-dimensional data defining the at least one object and identifying a planar surface in the at least one object based on the three-dimensional data. Orientation of the at least one object is defined so that the planar surface extends at least partially over a Z height of the green compact. A mask pattern is defined per layer to form the at least one object in the defined orientation by an additive manufacturing process with powder material. 1. A method to define construction of a green compact including at least one object embedded therein , the method comprising:receiving three-dimensional data defining the at least one object;identifying a planar surface in the at least one object based on the three-dimensional data;defining an orientation of the at least one object so that the planar surface extends at least partially over a Z height of the green compact; anddefining a mask pattern per layer to form the at least one object in the defined orientation by an additive manufacturing process with powder material.2. The method of claim 1 , comprising:identifying a cavity or concave portion in the at least one object; and defining an orientation of the at least one object so that the cavity extends at least partially over a Z height of the green compact, wherein the orientation of the at least one object is defined to increase uniform distribution of material forming the mask pattern over a Z height of the green compact.3. (canceled)4. The method of comprising:defining a convex hull around the at least one object; anddefining a division of a volume between the at least one object and the convex hull into a plurality of sub-volumes.5. The method of claim 4 , wherein at least a portion of the division of the volume is defined to provide a selected draft angle and wherein the division of the volume is sized and shaped to allow ...

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Номер записи: 33
10-02-2022 дата публикации

THREE-DIMENSIONAL PRINTING

Номер: US20220040764A1
Автор: Hinch Garry D., Stasiak James W., Weber Timothy L.
Принадлежит: Hewlett-Packard Development Company, L.P.

In an example three-dimensional printing method, individual layers of a metal-based build material are patterned, based on a 3D object model, with a binding agent to form an intermediate structure. A case-hardened portion of a 3D object is also patterned (based on the object model) by selectively depositing a hardening agent to deliver a predetermined concentration of a hardening element to at least one of the individual layers, wherein the individual layers are maintained below a vaporization temperature of the hardening agent during the selectively depositing. The intermediate structure is heated at a first rate to a temperature that aids in diffusion of the hardening element, and is held at the temperature for a predetermined time. The intermediate structure is cooled at a second rate. The intermediate structure, with the patterned case-hardened portion, is then sintered at a sintering temperature of the metal-based build material. 1. A method for three-dimensional printing , comprising:based on a 3D object model, patterning individual layers of a metal-based build material with a binding agent to form an intermediate structure;based on the 3D object model, patterning a case-hardened portion of a 3D object by selectively depositing, using an inkjet printhead, a hardening agent to deliver a predetermined concentration of a hardening element to at least one of the individual layers, wherein the individual layers are maintained below a vaporization temperature of the hardening agent during the selectively depositing;heating the intermediate structure at a first rate to a temperature that aids in diffusion of the hardening element;holding the intermediate structure at the temperature for a predetermined time;cooling the intermediate structure at a second rate; andsintering the intermediate structure with the patterned case-hardened portion at a sintering temperature of the metal-based build material.2. The method as defined in wherein:the at least one of the ...

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Номер записи: 34
10-02-2022 дата публикации

METHOD AND APPARATUS FOR ADDITIVE MANUFACTURING

Номер: US20220040766A1
Автор: Hellestam Calle
Принадлежит: ARCAM AB

A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed on a support structure, the method comprising the steps of: providing at least one model of the three-dimensional article, lowering the support structure a predetermined distance and rotating the support structure a predetermined angle in a first direction before applying a first powder layer covering the lowered and rotated support structure, rotating the support structure the predetermined angle in a second direction opposite to the first direction before directing the at least one first energy beam from the at least one first energy beam source at selected locations of the first powder layer, the at least one first energy beam source causing the first powder layer on the stationary support structure which is stationary to fuse in the selected locations according to the model to form first portions of the three-dimensional article. 1. An apparatus for forming a three-dimensional article through successive fusion of parts of a powder bed , which parts corresponds to successive cross sections of the three-dimensional article , the apparatus comprising:a selectively rotatable support structure;at least one first energy beam; moving the support structure a predetermined distance in z-direction and rotating the support structure a predetermined angle in a first direction before applying a first powder layer covering the lowered and rotated support structure,', 'rotating the support structure the predetermined angle in a second direction opposite to the first direction before directing the at least one first energy beam from the at least one first energy beam source at selected locations for fusing the first powder layer,', 'directing the at least one first energy beam from the at least one first energy beam source at selected locations according to the model for fusing the first powder layer on the support structure, which is stationary, for forming first ...

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Номер записи: 35
10-02-2022 дата публикации

Systems and methods for 3d printing with vacuum assisted laser printing machine

Номер: US20220040912A1
Автор: Guy NESHER, Michael Zenou, Ziv Gilan
Принадлежит: IO Tech Group Ltd

Systems and methods in which a material or materials (e.g., a viscous material) are printed or otherwise transferred onto an intermediate substrate at a printing unit(s). The intermediate substrate having an image of material printed thereon is subsequently transferred to a sample building unit, and the image of material is transferred from the intermediate substrate to a sample at the sample building unit. Optionally, the printing unit(s) includes a coating system that creates a uniform layer of the material on a donor substrate, and the material is transferred from the donor substrate onto the intermediate substrate at the printing unit(s). Each of the printing units may employ a variety of printing or other transfer technologies. The system may also include material curing, heating, sintering, ablating, material filling, imaging and cleaning units to aid in the overall process.

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Номер записи: 36
10-02-2022 дата публикации

Functionalized product fabricated from a resin comprising a functional component and a polymeric resin, and method of making the same

Номер: US20220040914A1
Автор: Bhavana Deore, Chantal PAQUET, Patrick Roland Lucien Malenfant, Stephane Denommee, Thomas LACELLE
Принадлежит: NATIONAL RESEARCH COUNCIL OF CANADA

Functional and/or functional precursor products, formulations for making the products, methods of making the products (e.g. functional coatings, concentrated gradients, and/or composites), and uses thereof are provided. In an aspect, a method for making a product is provided, the method comprising: a) combining at least one first component and at least one polymerizable component to form a composition; and b) polymerizing the at least one polymerizable component to form at least one polymer, wherein at least two phases are formed from the at least one first component and the at least one polymer. The at least one first component comprises at least one functional component, at least one functional precursor component, or combinations thereof, and the product is a functional product, a functional precursor product, or a combination of a functional and functional precursor product.

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Номер записи: 37
24-01-2019 дата публикации

Automated de-powdering with robotically controlled vacuum

Номер: US20190022942A1
Автор: Charles Edward Martin, Emanuel M. Sachs, Jonah Samuel Myerberg, Justin Cumming, Paul Hoisington, Ricardo Fulop, Robert Michael Shydo, JR.
Принадлежит: Desktop Metal, Inc.

A system for de-powdering one or more objects within a powder print bed comprises a build box configured to contain the powder print bed, and a de-powdering subsystem configured to engage the build box. The de-powdering subsystem comprises a vacuum device configured to withdraw loose powder agitated by the air jet device, and a robotic arm configured to convey the vacuum device to one or more locations on the powder print bed. The system may further comprise an air jet device disposed on the robotic arm, the air jet device configured to agitate, with a jet of air, unbound powder within the powder print bed. The system may further comprise a mechanical agitation instrument configured to facilitate agitation of the unbound powder within the powder print bed. The mechanical agitation instrument may be used in conjunction with one or both of the vacuum device and the air jet device

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Номер записи: 38
17-02-2022 дата публикации

Three-dimensional object and manufacturing method thereof

Номер: US20220048112A1
Автор: OPSCHOOR Jan, SAURWALT Jacob Jan
Принадлежит: ADMATEC EUROPE B.V.

The present invention concerns a method for the manufacture of a three-dimensional object, comprising (a) providing a three-dimensional model of the object, which divides the object in voxels; (b) applying a first layer of a radiation-curable slurry onto a target surface, wherein the slurry contains a polymerizable resin and a photoinitiator; (c) polymerizing the resin by illuminating the voxels of the first layer in accordance with the model with radiation at a temperature above room temperature and above the glass transition temperature of the polymerized resin, to cause polymerization of the resin to form a cross-linked polymeric matrix; (d) applying a subsequent layer of the slurry on top of the first layer; (e) polymerizing the resin by scanning the voxels of the subsequent layer in accordance with the model with radiation at a temperature above room temperature and above the glass transition temperature of the polymerized resin, to cause polymerization of the resin to form a cross-linked polymeric matrix; (f) repeating steps (d) and (e), wherein each time a subsequent layer is applied onto the previous layer, to produce a green body; and optionally (g) debinding and (h) sintering of the three-dimensional object. The invention further concerns the three-dimensional object obtained thereby and an additive manufacturing system suitable for performing the method according to the invention. 2. The method according to claim 1 , wherein the temperature applied in step (c) and each occurrence of step (e) is in the range of 40-100° C.3. The method according to claim 1 , wherein the resin comprises monomers and/or oligomers that are polymerizable via radiation claim 1 , preferably wherein the monomers are selected from urethanes claim 1 , vinyl ether acrylates claim 1 , allyl ether acrylates claim 1 , maleimide acrylates claim 1 , thiol acrylates claim 1 , epoxide acrylates claim 1 , oxetane acrylates and combinations thereof.4. The method according to claim 1 , wherein ...

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Номер записи: 39
17-02-2022 дата публикации

HEAT SOURCE CALIBRATION

Номер: US20220048113A1
Автор: Borras Camarasa Marc, ROSENBLATT Daniel Pablo, Vega Ponce Hector
Принадлежит: Hewlett-Packard Development Company, L.P.

An example three-dimensional printer includes a print agent distributor to provide a printing agent to a print bed of powdered build material, a heat source to apply heat over the print bed to form a printed part where printing agent is applied, a heat sensor to measure a temperature of the printed part after heat has been applied, and a processor coupled to the heat sensor. The processor is to determine a target power to be applied to the heat source heat a part to a target temperature in a subsequent printing process. The processor is to determine the target power based on the target temperature, a measured first temperature of a first printed part formed when a first power is applied to the heat source and a measured second temperature of a second printed part formed when a second, different power is applied to the heat source. 1. A three-dimensional printer comprising:a print agent distributor configured to provide a printing agent to a print bed of powdered build material;a heat source configured to apply heat over the print bed to form a printed part at a region of the print bed to which printing agent is applied;a heat sensor configured to measure a temperature of the printed part after heat has been applied by the heat source; anda processor coupled to the heat sensor, wherein the processor is configured to determine a target power to be applied to the heat source to enable a part to be heated by the heat source to a target temperature in a subsequent printing process,wherein the processor is configured to determine the target power based on the target temperature, a measured first temperature of a first printed part formed when a first power is applied to the heat source and a measured second temperature of a second printed part formed when a second power is applied to the heat source, wherein the second power is different to the first power.2. A three-dimensional printer in accordance with claim 1 , wherein the printer is configured to form printed parts ...

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Номер записи: 40
17-02-2022 дата публикации

3d printer

Номер: US20220048252A1
Автор: Byeong Cheol Baek, Dong Geun Lee, Goo Sang Jung
Принадлежит: Conception Co Ltd, Wonkwang E&Tech Co Ltd

Disclosed is 3D printer that may precisely irradiate a laser to a spot where the laser is to be irradiated so that a precise three-dimensional product may be output, and prevent a temperature deviation from occurring inside a case including a product forming chamber to improve the quality of the output product, and increase the durability of the output product by enhancing the binding force between powder and powder applied to an output bed and maximizing the melting of the powder.

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Номер записи: 41
04-02-2021 дата публикации

Plasticization device and three-dimensional shaping device

Номер: US20210031444A1
Автор: Seiichiro Yamashita
Принадлежит: Seiko Epson Corp

A plasticization device used in a three-dimensional shaping device includes: a cylinder having a supply port through which a material is supplied; a spiral screw configured to rotate inside the cylinder; a first heating unit provided on an outer peripheral portion of the cylinder; and a nozzle provided on the cylinder and configured to discharge the material plasticized by rotation of the screw and heating of the first heating unit. The outer peripheral portion has, between the supply port and the nozzle, a first region and a second region from the supply port toward the nozzle, and the first heating unit is provided to make a temperature of the second region higher than a temperature of the first region.

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Номер записи: 42
31-01-2019 дата публикации

3d printed subsurface tool having a metal diaphragm

Номер: US20190032451A1
Автор: Kevin Robin Passmore
Принадлежит: Halliburton Energy Services Inc

A subsurface tool adapted to extend within a wellbore that includes an outer sleeve defining a first passageway; an inner sleeve disposed within the first passageway to form an annulus between the outer sleeve and inner sleeve; and a first annular diaphragm extending between the outer sleeve and the inner sleeve to fluidically isolate a first portion of the annulus from and a second portion of the annulus; wherein when the tool is in a first configuration, the first annular diaphragm is integrally formed with the inner sleeve and outer sleeve to form a single-component tool.

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Номер записи: 43
09-02-2017 дата публикации

Systems and methods for post additive manufacturing processing

Номер: US20170036401A1
Автор: Joseph Samo, Matthew Donovan, Thomas J. Ocken
Принадлежит: Delavan Inc

A system for removing powder from an additively manufactured article includes a powder removal mechanism. The powder removal mechanism can include a build plate holder configured to hold a build plate at a distal end thereof. The powder removal mechanism can also include a first actuator that is configured to angle the build plate holder relative to gravity and a second actuator that is configured to rotate the build plate holder about a central axis of the build plate holder.

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Номер записи: 44
24-02-2022 дата публикации

Method for fabricating a three-dimensional metal part using a conformable fugitive material

Номер: US20220055103A1
Автор: Paul D. Prichard
Принадлежит: Kennametal Inc

The present invention is directed towards a method for fabricating a three-dimensional metal, ceramic, and/or cermet part, the method comprising forming the three-dimensional metal, ceramic, and/or cermet part by an additive manufacturing technique; encapsulating the three-dimensional metal, ceramic, and/or cermet part in a conformable fugitive material to form an encapsulated three-dimensional metal, ceramic, and/or cermet part; and cold isostatic pressing the encapsulated three-dimensional metal, ceramic, and/or cermet part with pressurized incompressible fluid that contacts the conformable fugitive material. Also disclosed are three-dimensional metal, ceramic, and/or cermet parts fabricated according to said method.

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Номер записи: 45
24-02-2022 дата публикации

ADDITIVE MANUFACTURING METHODS FOR COMPONENTS

Номер: US20220055111A1
Автор: Gable Brian M., Li Hoishun
Принадлежит:

A method of forming a unitary sintered body can include cutting a first portion and a second portion from a sheet of feedstock. The feedstock can include ceramic or metallic particles suspended in a binder. The first portion can be positioned in contact with the second portion and the portions can be sintered together to form the unitary body. 1. A unitary body , comprising a sintered metal that defines an enclosed cavity of between about 1 cmand about 10 ,000 cm.2. The unitary body of claim 1 , wherein the sintered metal comprises a first layer bonded to a second layer at an interface comprising a striated microstructure.3. The unitary body of claim 2 , wherein the first layer comprises an outer portion and an inner portion claim 2 , the outer portion having a higher density than the inner portion.4. The unitary body of claim 1 , wherein the sintered metal comprises a first region having a first density and a second region having a second density different from the first density.5. The unitary body of claim 1 , further comprising between about 0.001% and about 70% binder by weight.6. The unitary body of claim 1 , wherein the sintered metal defines a sidewall and a floor claim 1 , the sidewall and the floor at least partially defining the enclosed cavity claim 1 , the sidewall having an angle relative to the floor of greater than about 20°.7. The unitary body of claim 1 , wherein the sintered metal comprises at least one of aluminum claim 1 , steel claim 1 , or titanium.8. A method of forming a unitary body claim 1 , comprising:positioning a first layer comprising a first material in contact with a second layer comprising a second material, the first material comprising particles suspended in a binder; andsintering the first layer and the second layer to form the unitary body.9. The method of claim 8 , further comprising positioning a third layer comprising the first material in contact with the second layer claim 8 , the third layer defining an aperture.10. The ...

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Номер записи: 46
24-02-2022 дата публикации

Methods and devices for 3d printing

Номер: US20220055112A1
Автор: Mahmood SHIROOYEH, Matthew Petros, Payman Torabi
Принадлежит: 3deo Inc

The present disclosure provides systems and methods for the formation of three-dimensional objects. A method for forming a three-dimensional object may comprise alternately and sequentially applying a stream comprising a binding substance to an area of a layer of powder material in a powder bed, and generating at least one perimeter of the three-dimensional object in the area. The stream may be applied in accordance with a model design of the three-dimensional object. The at least one perimeter may generated in accordance with the model design.

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Номер записи: 47
06-02-2020 дата публикации

Laser pulse shaping for additive manufacturing

Номер: US20200038994A1
Автор: Andrew J. Bayramian, Christopher M. Spadaccini, Eric B. Duoss, James A. DEMUTH, Joshua D. Kuntz
Принадлежит: Lawrence Livermore National Security LLC

The present disclosure relates to an apparatus for additively manufacturing a product in a layer-by-layer sequence, wherein the product is formed using powder particles deposited on an interface layer of a substrate. A laser generates first and second beam components, where the second beam component has a substantially higher power level and a substantially shorter duration than the first beam component. A mask is used to create a 2D optical pattern in which only select portions of the first and second beam components are allowed to irradiate the powdered particles. The first beam component heats the powder particles at least to substantially a melting point, at which point the particles begin to experience surface tension forces relative to the interface layer. While the particles are heated, the second beam component further heats the particles and also melts the interface layer of the substrate before the surface tension forces can act on and distort the particles, and such that the particles and the interface layer are able to bond together.

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Номер записи: 48
03-03-2022 дата публикации

POWDERED BUILD MATERIAL DISTRIBUTION

Номер: US20220062999A1
Автор: Nauki Krzyaztof, Schodin Chris Paul
Принадлежит: Hewlett-Packard Development Company, L.P.

In one example in accordance with the present disclosure, a build material distribution device is described. The build material distribution device includes a pressurized container to hold a suspension of a powdered build material in a liquid carrier. The powdered build material is to form a three-dimensional (3D) printed part. The build material distribution device also includes a nozzle through which the suspension is ejected and a pressurizer coupled to the pressurized container to eject the suspension through the nozzle. 1. A build material distribution device , comprising:a rotating pressurized container to hold a suspension of a powdered build material in a liquid carrier, which powdered build material is to form a three-dimensional (3D) printed part;a nozzle through which the suspension is ejected; anda pressurizer coupled to the rotating pressurized container to eject the suspension through the nozzle.2. The build material distribution device of claim 1 , further comprising a slip seal disposed between the rotating pressurized container and the nozzle to mate the rotating pressurized container with a non-rotating nozzle.3. The build material distribution device of claim 1 , further comprising a disruptor disposed within at least one of the rotating pressurized container and the nozzle to introduce turbulence to the suspension.4. The build material distribution device of claim 1 , wherein the disruptor comprises at least one of:a mixing paddle;an ultrasound generator; anda protrusion.5. The build material distribution device of claim 1 , wherein the pressurizer is at least one of:a piston pump; anda pressurized gas chamber fluidically connected to the rotating pressurized chamber.6. The build material distribution device of claim 1 , further comprising a pressure sensor disposed within the rotating pressurized chamber.7. The build material distribution device of claim 1 , wherein:the build material distribution device forms a layer of suspension less than 50 ...

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Номер записи: 49
25-02-2016 дата публикации

Device for producing three-dimensional models

Номер: US20160052166A1
Автор: Andreas Dominik Hartmann
Принадлежит: VOXELJET AG

The present invention relates to a device for manufacturing three-dimensional models by means of a 3D printing process, whereby a build platform for application of build material is provided and a support frame is arranged around the build platform, to which said support frame at least one device for dosing the particulate material and one device for bonding the particulate material is attached via the guiding elements and the support frame is moveable in a Z direction, which essentially means perpendicular to the base surface of the build platform. In so doing, the device provides a material feeding device having a particle material container to supply particulate material in batches from the storage area to the dosing apparatus and to do so with the least possible amount of shearing forces and without significant interaction with the atmosphere.

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Номер записи: 50
25-02-2021 дата публикации

Solid-State Manufacturing System And Process Suitable For Extrusion, Additive Manufacturing, Coating, Repair, Welding, Forming And Material Fabrication

Номер: US20210053283A1
Автор: Fengchao LIU, Pingsha Dong
Принадлежит: University of Michigan

A solid-state manufacturing system having a sleeve having a hollow portion for receiving a feedstock material; a friction die rotatably coupled adjacent an end of the sleeve, the friction die and the sleeve being rotatable relative to each other along a rotation axis and configured to generate frictional heat to heat at least a portion of the feedstock material within the hollow portion of the sleeve to a malleable state; a propulsion system operably coupled to the sleeve configured to urge the feedstock material in a processing direction along the rotational axis; and an extrusion hole configured to permit the malleable feedstock material to be extruded from the extrusion hole in response to the propulsion system. A solid-state manufacturing method similarly configured is provided.

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Номер записи: 51
23-02-2017 дата публикации

Systems and methods for vehicle subassembly and fabrication

Номер: US20170050677A1
Автор: Broc William Tenhouten, Kevin R. Czinger, Matthew M. O'brien, Praveen Varma PENMETSA, Richard W. HOYLE, William Bradley Balzer, Zachary Meyer Omohundro
Принадлежит: Divergent Technologies Inc

A vehicle chassis is provided. The vehicle chassis may comprise one or more vehicle chassis modules or chassis substructures that are formed from a plurality of customized chassis nodes and connecting tubes. The customized chassis nodes and connecting tubes may be formed of one or more metal and/or non-metal materials. The customized chassis nodes may be formed with connecting features to which additional vehicle panels or structures may be permanently or removeably attached. The vehicle chassis modules or chassis substructures may be interchangeably and removeably connected to provide a vehicle chassis having a set of predetermined chassis safety or performance characteristics.

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Номер записи: 52
10-03-2022 дата публикации

Sintering apparatus for selective energization

Номер: US20220072608A1
Автор: Chan Park, Heung-Nam Han, Jong-Hun RYU, Jun-young Cho, Mi-young Kim, Woo-Chan JIN
Принадлежит: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

One embodiment of the present invention provides a sintering apparatus for selectively applying electric current, comprising: a mold provided with a space for accommodating a target object; a punch for uniaxially pressing the space of the mold; an electric controller provided at an end of the punch opposite to the pressing direction; an electrode unit in contact with the electric controller; and a heater extending from the electrode unit so as to heat the mold, wherein the mold and the punch are formed with a conductor.

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Номер записи: 53
10-03-2022 дата публикации

Method and system for manufacturing a structure

Номер: US20220072610A1
Автор: Chain Tsuan Liu, Tianlong Zhang
Принадлежит: City University of Hong Kong CityU

A method and a system for manufacturing a structure includes the steps of: (a) supplying a mixture consisting a plurality of primitive materials at a target spot; (b) melting and solidifying the mixture disposed at the target spot to form a portion of a metallic structure consisting of an alloy of the plurality of the primitive materials; and (c) repeating steps (a) and (b) at a plurality of target spots in a three-dimensional space to produce the metallic structure of the alloy.

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Номер записи: 54
10-03-2022 дата публикации

SUPPORTS FOR COMPONENTS DURING DEBINDING AND SINTERING

Номер: US20220072613A1
Автор: BEN-ZUR Ofer, PELED Hagai
Принадлежит: Tritone Technologies Ltd.

A method for making a product or a part for a product wherein the product or part is made in a process using additive manufacture and requires sintering, the method comprising producing a support component with a shape complementary to the product or part, in an associated process, also using additive manufacture; and supporting the product or part during sintering by fitting the product or part into the complementary shape prior to placing in the furnace for sintering. 1. A method for making a product or a part for a product wherein the product or part is formed by layerwise filling of a mold , the mold made using additive manufacture , wherein the product or part once formed requires sintering , the method comprising:producing a support component with a shape complementary to said product or part, also by layerwise filling of a mold, the mold made using additive manufacture; andsupporting said product or part during said sintering by fitting said product or part into said complementary shape.2. The method of claim 1 , wherein said product or part comprises metallic powder in a binder.3. The method of claim 1 , wherein said support component is made from a material selected to have a melting point which is higher than a sintering temperature of said product or part.4. The method of claim 3 , wherein said support part is made from a material having a coefficient of expansion which is close to a coefficient of expansion of said product or part at said sintering temperature.5. The method of claim 1 , wherein the product or part comprises stainless steel and the support comprises AlO.6. The method of claim 1 , wherein the product or part comprises titanium and the support comprises ZrO.7. The method of claim 1 , wherein the product or part and the support comprise a same material.8. The method of claim 7 , wherein said same material comprises metal or wherein said same material comprises ceramic.9. The method of claim 1 , comprising carrying out sintering with the ...

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Номер записи: 55
10-03-2022 дата публикации

THREE-DIMENSIONAL PRINTING

Номер: US20220072614A1
Автор: Shields James P
Принадлежит: Hewlett-Packard Development Company, L.P.

This application describes kits, methods, and systems of three dimensional printing. In some examples, described herein are three-dimensional object printing kits comprising a metallic or a ceramic build material, a polymeric binder dispersed in an aqueous liquid vehicle, and a boundary fluid comprising thermally expandable particles. 1. A three-dimensional object printing kit comprising:a metallic or a ceramic build material;a polymeric binder dispersed in an aqueous liquid vehicle; anda boundary fluid comprising thermally expandable particles.2. The three-dimensional object printing kit of claim 1 , whereinthe metallic build material is steel, bronze, titanium, titanium alloys, aluminum, aluminum alloys, nickel, nickel alloys, cobalt, cobalt alloys, iron, iron alloys, nickel cobalt, nickel cobalt alloys, gold, gold alloys, silver, silver alloys, platinum, platinum alloys, copper, copper alloys, zirconium, zirconium alloys, or a combination thereof; andthe ceramic build material is an oxide, a nitride, a carbide, an aluminum oxide, aluminum-calcium-phosphorus oxides, bio glasses, boron nitride, boron carbide, borosilicate glass, calcium aluminates, calcium sulfates, ceravital, corals, ferric-calcium-phosphorus oxides, hydroxyapatites, dense hydroxyapatites, silica, silicon boride, silicon oxide, silicon nitride, titanium oxide, titanium nitride, tri-calcium phosphate, zinc-calcium-phosphorus oxides, zinc sulfate-calcium-phosphorus oxides, zinc oxide, zirconia, hydroxyapatite, alumina, oxide glass, or a combination thereof.3. The three-dimensional object printing kit of claim 2 , wherein the metallic build material is AlSi10Mg claim 2 , 2xxx series aluminum claim 2 , 4xxx series aluminum claim 2 , CoCr MP1 claim 2 , CoCr SP2 claim 2 , Maraging Steel MS1 claim 2 , Hastelloy C claim 2 , Hastelloy X claim 2 , NickelAlloy HX claim 2 , Inconel IN625 claim 2 , Inconel IN718 claim 2 , SS GP1 claim 2 , SS 17-4PH claim 2 , SS 316L claim 2 , SS 430L claim 2 , Ti6Al4V claim 2 ...

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Номер записи: 56
10-03-2022 дата публикации

Interrupted additive manufacturing

Номер: US20220072773A1
Автор: Aja HARTMAN, Jarrid WITTKOPF, Kristopher J. ERICKSON, Lihua Zhao
Принадлежит: Hewlett Packard Development Co LP

In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes a build material distributor to deposit layers of powdered build material onto a bed to form a three-dimensional (3D) printed object. The additive manufacturing system also includes a controller to interrupt printing of the 3D printed object and to resume printing of the 3D printed object. The additive manufacturing system also includes a heat source to, during an interruption in printing, maintain a temperature of a top surface of the powdered build material between a solidification temperature and a melting temperature for the build material.

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Номер записи: 57
10-03-2022 дата публикации

Cylindrical coordinate 3d printer and methods of operation thereof

Номер: US20220072781A1
Автор: Christianna Elizabeth TAYLOR, Jason Reyes CORTELLA, Noah Benjamin Novik KATZ, Puneet Bhumipal JHAVERI, Yi Yang
Принадлежит: Gantri Inc

Disclosed are cylindrical-coordinate 3D printers and methods of 3D printing. In one embodiment, the cylindrical-coordinate 3D printer can comprise a printbed, a rotatable printbed support assembly, a vertically translatable base plate supporting the printbed support assembly, four rail segments aligned radially with the printbed support assembly, and four gantry carriers configured to carry or support four printheads. The gantry carriers can be moveable along the rail segments. The four gantry carriers can be moved simultaneously.

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Номер записи: 58
04-03-2021 дата публикации

Multi-sensor quality inference and control for additive manufacturing processes

Номер: US20210060647A1
Автор: Alberto Castro, David D. Clark, Mark J. Cola, Martin S. Piltch, Matias Roybal, R. Bruce Madigan, Vivek R. Dave
Принадлежит: Sigma Labs Inc

This invention teaches a multi-sensor quality inference system for additive manufacturing. This invention still further teaches a quality system that is capable of discerning and addressing three quality issues: i) process anomalies, or extreme unpredictable events uncorrelated to process inputs; ii) process variations, or difference between desired process parameters and actual operating conditions; and iii) material structure and properties, or the quality of the resultant material created by the Additive Manufacturing process. This invention further teaches experimental observations of the Additive Manufacturing process made only in a Lagrangian frame of reference. This invention even further teaches the use of the gathered sensor data to evaluate and control additive manufacturing operations in real time.

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Номер записи: 59
10-03-2022 дата публикации

METHOD AND SYSTEM FOR SOFTWARE DEFINED METALLURGY

Номер: US20220075334A1
Автор: Bose Animesh, KERNAN BRIAN D., Sowerbutts Mark, Tuncer Nihan
Принадлежит: Desktop Metal, Inc.

A system for generating a user-adjustable furnace profile, comprises a user interface configured to receive one or more materials properties from a user, a processor, and a memory with computer code instructions stored thereon. The memory is operatively coupled to the processor such that, when executed by the processor, the computer code instructions cause the system to implement communicating with a furnace to ascertain one or more thermal processes associated with the furnace, identifying one or more object characteristics associated with an object to be processed by furnace, and determining a thermal processing parameter profile of at least one thermal processing parameter corresponding to each of the thermal processes, based on (i) the one or more part characteristics and (ii) the one or more materials properties, the thermal processing parameter profile characterizing a cycle of the one or more thermal processes. 1. A method of generating a user-adjustable thermal processing parameter profile for use by a furnace , comprising: receiving, through a user interface, one or more materials properties provided by a user;', 'communicating with a furnace to ascertain one or more thermal processes associated with the furnace;', 'identifying one or more part characteristics associated with a part to be processed by furnace; and', 'determining a thermal processing parameter profile of at least one thermal processing parameter corresponding to each of the thermal processes, based on at least one of (i) the one or more part characteristics and (ii) the one or more materials properties, the thermal processing parameter profile characterizing a cycle of the one or more thermal processes., 'by a processor and a memory with computer code instructions stored thereon,'}2. The method of claim 1 , further comprising communicating with the user through a graphical user interface claim 1 , and claim 1 , based on the communicating claim 1 , one or both of (i) guiding the user to an ...

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Номер записи: 60
28-02-2019 дата публикации

Three-dimensional metallic objects having microstructures

Номер: US20190060994A1
Автор: Animesh Bose, Jonah Samuel Myerberg
Принадлежит: Desktop Metal Inc

Devices, systems, and methods are directed at spreading sequential layers of powder across a powder bed and applying energy to each layer to form a three-dimensional object. The powder can include granules including agglomerations of metallic particles to facilitate spreading the metallic particles in each layer. The energy can be directed to the powder to reflow the granules in each layer to bind the metallic particles in the layer to one another and to one or more adjacent layers to form the three-dimensional object. Thus, in general, the agglomeration of the metallic particles in the granules can overcome constraints associated with metallic particles that are of a size ordinarily unsuitable for flowing and/or a size that presents safety risks. By overcoming these constraints, the granules can improve formation of dense finished parts from a powder and can result in formation of unique microstructures in finished parts.

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Номер записи: 61
17-03-2022 дата публикации

SYSTEM AND METHOD FOR ADDITIVELY MANUFACTURING AN OBJECT

Номер: US20220080507A1
Автор: Braley Daniel J., Cochran Russell W., MacDonald Elaine
Принадлежит: The Boeing Company

A method of additively manufacturing an object includes successively forming a plurality of powder layers by depositing powder over a build platform using a powder-deposition apparatus. The method also includes successively forming a binder shell by bonding select regions of each one of the plurality of powder layers before forming each successive one of the plurality of powder layers using a binder-delivery apparatus. The binder shell encloses a portion of the powder. The method further includes densifying the portion of the powder bound by the binder shell using a consolidation apparatus. 1. An additive manufacturing system comprising:a build platform;a powder-deposition apparatus configured to deposit powder such that a plurality of powder layers is successively formed over the build platform;a binder-delivery apparatus configured to deliver binder at select regions of each successive one of the plurality of powder layers such that a binder shell is successively formed; anda consolidation apparatus configured to densify a portion of the powder bound by the binder shell.2. The additive manufacturing system of claim 1 , wherein the consolidation apparatus comprises a vibration mechanism coupled to the build platform and configured to compact the portion of the powder bound by the binder shell.3. The additive manufacturing system of claim 2 , wherein the vibration mechanism comprises an ultrasonic vibration element configured to generate ultrasonic vibrations.4. The additive manufacturing system of claim 1 , wherein the consolidation apparatus comprises a tamping mechanism configured to compress the portion of the powder bound by the binder shell.5. The additive manufacturing system of claim 4 , wherein the tamping mechanism comprises a tamping head configured to consecutively compress sections of the portion of the powder bound by the binder shell.6. The additive manufacturing system of claim 4 , wherein the tamping mechanism comprises a plurality of tamping pins ...

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Номер записи: 62
17-03-2022 дата публикации

DETERMINING LIQUID AGENT AMOUNTS IN 3D PRINTING

Номер: US20220080508A1
Автор: Champion David, Kasperchik Vladek, Mosher Daniel
Принадлежит:

In an example implementation, a method of determining liquid agent amounts in 3D printing includes measuring density levels of a build material at locations across a build material layer and determining if the measured density levels vary from expected density levels. For locations where measured density levels vary from expected density levels, an adjusted liquid agent dose is determined, and for locations where measured density levels do not vary from expected density levels, an expected liquid agent dose is determined. The adjusted and expected liquid agent doses are deposited onto the layer at locations corresponding with the adjusted and expected liquid agent doses. 1. A method of determining liquid agent amounts in 3D printing comprising:measuring density levels of a build material at locations across a build material layer;determining if the measured density levels vary from expected density levels;for locations across the layer where measured density levels vary from expected density levels, determining an adjusted liquid agent dose;for locations across the layer where measured density levels do not vary from expected density levels, determining an expected liquid agent dose; and,depositing the adjusted and expected liquid agent doses onto the layer at locations that correspond with the adjusted and expected liquid agent doses.2. A method as in claim 1 , further comprising:measuring thickness levels of the build material at locations across the layer;determining if the measured thickness levels vary from expected thickness levels;generating a liquid dosage map based on the measured thickness levels and measured density levels, the liquid dosage map indicating locations of the layer for depositing an expected liquid dosage and locations of the layer for depositing adjusted liquid dosages.3. A method as in claim 2 , wherein generating a liquid dosage map comprises determining the adjusted liquid dosages to achieve a target level of liquid agent fill into the ...

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Номер записи: 63
27-02-2020 дата публикации

Debinding of 3d objects

Номер: US20200061705A1
Автор: Alexander C. BARBATI, Michael A. Gibson
Принадлежит: Desktop Metal Inc

3D-printed parts may include binding agents to be removed following an additive manufacturing process. A debinding process removes the binding agents by immersing the part in a solvent bath causing chemical dissolution of the binding agents. The time of exposure of the 3D-printed part to the solvent is determined based on the geometry of the part, wherein the geometry is applied to predict the diffusion of the solvent through the 3D-printed part. The 3D-printed part is then immersed in the solvent bath to remove the binding agent, and is removed from the solvent bath after the time of exposure.

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Номер записи: 64
27-02-2020 дата публикации

Debinder for 3d objects

Номер: US20200061708A1
Автор: Daniel R. Jepeal, Paul E. Dresens
Принадлежит: Desktop Metal Inc

A debinder provides for debinding printed green parts in an additive manufacturing system. The debinder can include a storage chamber, a process chamber, a distill chamber, a waste chamber, and a condenser. The storage chamber stores a liquid solvent for debinding the green part. The process chamber debinds the green part using a volume of the liquid solvent transferred from the storage chamber. The distill chamber collects a solution drained from the process chamber and produces a solvent vapor from the solution. The condenser condenses the solvent vapor to the liquid solvent and transfer the liquid solvent to the storage chamber. The waste chamber collects a waste component of the solution.

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Номер записи: 65
27-02-2020 дата публикации

System for additive manufacturing

Номер: US20200061711A1
Автор: Michael Robert Tucker
Принадлежит: General Electric Co

An additive manufacturing system for printing an article including a build plate having a build surface between an inner radius and an outer radius that may receive powder particles and a recoating assembly that may distribute the powder particles onto the build surface to form a build layer of the article. The recoating assembly includes a support jig having a first end, a second end, and a support wall extending between the first and second ends and a recoater blade coupled to the second end and extending along at least a portion of a length of the support wall. A shape of the recoater blade is such that, when the recoater blade is positioned against the build surface, an angle between the recoater blade and a tangent at each radii of the build plate is substantially constant.

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Номер записи: 66
11-03-2021 дата публикации

Devices and methods for three-dimensional printing

Номер: US20210069783A1
Автор: Matthew Petros, Payman Torabi
Принадлежит: 3deo Inc

The present disclosure provides systems and methods for the formation of three-dimensional objects. A method for forming a three-dimensional object may comprise alternately and sequentially applying a stream comprising a binding substance to an area of a layer of powder material in a powder bed, and generating at least one perimeter of the three-dimensional object in the area. The stream may be applied in accordance with a model design of the three-dimensional object. The at least one perimeter may generated in accordance with the model design.

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Номер записи: 67
11-03-2021 дата публикации

A method of generating a mold and using it for printing a three-dimensional object

Номер: US20210069784A1
Автор: Alexander C. BARBATI, Mats Moosberg
Принадлежит: Addleap AB, Desktop Metal Inc

This invention relates to three-dimensional printing. This invention in particular relates to a method of generating mold and printing a three-dimensional object. The mold thickness is controlled and holes are generated in the mold surface for releasing moisture easily. The mold surface having holes is designed initially digitally and then combined with the three-dimensional model before printing the three-dimensional object. In case the thickness of the mold surface is more then it reduces the overall quality of the three-dimensional object. When the model is enclosed inside the mold, there will be some residue moisture in the model even if the drying apparatus can improve this by drying layer by layer. This affects the final quality of the part. A solution of these problems is provided in the present invention. The thickness of the mold layer is between 0.5 to 1 mm and holes having 0.1 to 0.4 mm diameter. The holes are evenly distributed on the mold. The mold having the holes is prepared from which moisture can easily escape. A method of digitally generated a mold having thin layer and holes is used for fabricating three dimensional objects with high precision and quality.

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Номер записи: 68
17-03-2016 дата публикации

Production of substantially spherical metal powders

Номер: US20160074942A1
Автор: Pei Sun, Yang Xia, Ying Zhang, Zhigang Z. Fang
Принадлежит: University of Utah Research Foundation UURF

A method for producing a substantially spherical metal powder is described. A particulate source metal includes a primary particulate and has an average starting particle size. The particulate source metal is optionally ball milled and mixed with a binder in a solvent to form a slurry. The slurry is granulated to form substantially spherical granules, wherein each granule comprises an agglomeration of particulate source metal in the binder. The granules are debinded at a debinding temperature to remove the binder from the granules forming debinded granules. The debinded granules are at least partially sintered at a sintering temperature such that particles within each granule fuse together to form partially or fully sintered solid granules. The granules can then be optionally recovered to form a substantially spherical metal powder.

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Номер записи: 69
17-03-2016 дата публикации

Three-dimensional printing apparatus, three-dimensional object forming method, and three-dimensional object

Номер: US20160075085A1
Автор: Takafumi Sasaki
Принадлежит: Ricoh Co Ltd

A three-dimensional printing apparatus for forming a three-dimensional object is provided. The three-dimensional printing apparatus includes a forming unit to supply a powder to form a powder layer and a head to eject liquid droplets of a forming liquid onto the powder layer to bond particles of the powder layer to form a forming layer. The forming unit and the head form laminated forming layers by sequentially repeating forming the powder layer and ejecting the forming liquid to form a between-layers vacant space formed between the two successive forming layers sequentially laminated in the laminating direction.

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Номер записи: 70
24-03-2022 дата публикации

Tube, method of manufacturing tube, and related devices

Номер: US20220088677A1
Автор: Pengcheng CAO, Thomas Lewin
Принадлежит: KANTHAL AB

A tube is disclosed comprising an inlet portion, an outlet portion, and a curved tube portion between the inlet and outlet portions. A vertical cross-section of the curved tube portion comprises two substantially straight inner delimiting surfaces meeting each other at an angle <100°. The present disclosure further relates to a method of manufacturing a tube, a computer program, and a computer-readable medium.

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Номер записи: 71
07-03-2019 дата публикации

Apparatus for manufacturing three-dimensional shaped object

Номер: US20190070781A1
Автор: Kousuke Yamauchi, Masataka Takenami, Syuu Ukegawa
Принадлежит: Panasonic Intellectual Property Management Co Ltd

Apparatus for manufacturing a three-dimensional shaped object comprises a chamber, a transmission window, a blow-out port and a cover member, wherein a solidified layer is formed by irradiation of a predetermined portion of a material layer with a light beam, thereby allowing a sintering of the material in the predetermined portion or a melting and subsequent solidification of the material, the material layer being provided within the chamber. The transmission window is provided in the chamber, allowing the light beam to be transmitted therethrough. The blow-out port is located around the transmission window, and serves for blowing out an inert gas toward an interior of the chamber. The cover member, which is positioned below the blow-out port and also serves for surrounding the blow-out port, has an annular form. A gap through which the inert gas passes is provided between the cover member and the transmission window.

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Номер записи: 72
16-03-2017 дата публикации

Printhead module for additive manufacturing system

Номер: US20170072463A1
Автор: Hou T. Ng, Nag B. Patibandla, Raanan Zehavi
Принадлежит: Individual

A module for an additive manufacturing system includes a frame configured to be removably mounted on a movable support, a dispenser configured to deliver a layer of particles on a platen that is separate from the frame or an underlying layer on the platen, a heat source configured to heat the layer of particles to a temperature below a temperature at which the particles fuse, and an energy source configured to fuse the particles. The dispenser, heat source and energy source are positioned on the frame in order along a first axis, and the dispenser, heat source and energy source are fixed to the frame such that the frame, dispenser, heat source and energy source can be mounted and dismounted as a single unit from the support.

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Номер записи: 73
22-03-2018 дата публикации

Torque bar and methods for making

Номер: US20180080513A1
Автор: John Swank, Todd Rook
Принадлежит: Goodrich Corp

A torque bar manufactured by an additive manufacturing process is provided. The torque bar may include a torque bar body made of more than one metallic material. The torque bar may also include a geometry that comprises one or more voids and one or more webs, as well as a varied geometry in the direction of a longitudinal axis. The torque bars can exhibit characteristics, such as vibration damping, tuned stiffness, and tuned bending resistance in order to enhance dynamic stability.

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Номер записи: 74
31-03-2022 дата публикации

METHOD FOR THE PRODUCTION OF PARTS MADE FROM METAL OR METAL MATRIX COMPOSITE AND RESULTING FROM ADDITIVE MANUFACTURING FOLLOWED BY AN OPERATION INVOLVING THE FORGING OF SAID PARTS

Номер: US20220097139A1
Автор: DESRAYAUD Christophe, DI SERIO Emile Thomas, DUPERRAY Lionel, PERRIER Frédéric
Принадлежит: Saint Jean Industries

A method of manufacturing a piece of metal alloy or of metal matrix composite materials consisting of making a preform by additive manufacturing by adding material in successive layers, and subjecting the preform to a forging operation taking place in a single step and between two dies to deform said preform to a final shape of the piece to be obtained. 1. A method of manufacturing a piece of metal alloy or of metal matrix composite materials , said method comprising:making a preform by additive manufacturing by adding material in successive layers; andsubjecting the preform to a forging operation taking place in a single step and between two dies defining a die cavity, to deform said preform to the final shape of the piece to be obtained,wherein the preform contains at least one first zone, called powder area, in which a powder material is not bonded together or is partially consolidated, and at least one second zone, called shell, comprising bonded material enclosing the powder area,wherein the forging operation is carried out such that the deformation of the preform via the two dies bonds the powder material of the powder area in solid phase,wherein the forging operation is carried out by applying a true strain to the shell superior or equal to 1.5,wherein the pressure inside the die cavity at the end of the forging operation is between 30 MPa and 700 MPa.2. A method according to claim 1 , wherein the true strain applied to the shell is superior or equal to 1.7.3. A method according to claim 1 , wherein the true strain applied to the shell is inferior or equal to 8 claim 1 , preferably inferior or equal to 4 claim 1 , more preferably inferior or equal to 3 claim 1 , and even more preferably inferior or equal to 2.4. A method according to claim 1 , wherein the forging step is carried out by applying a true strain to the powder area superior or equal to 2 claim 1 , provided that the true strain applied to the powder area is superior to the true strain applied to ...

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Номер записи: 75
31-03-2022 дата публикации

FIBER MANAGEMENT ARRANGEMENT AND METHOD FOR ADDITIVE MANUFACTURING SYSTEM

Номер: US20220097315A1
Автор: Budge Trevor David, Hambling Colin Hugh
Принадлежит: Continuous Composites Inc.

A method is disclosed for fabricating an object. The method may include discharging a material through an outlet of a print head, and moving the print head during discharging to form the object with the material. The method may also include moving the outlet of the print head a distance away from the object to provide a clearance between the outlet and the object, moving a cutting mechanism through the clearance toward the material, and causing the cutting mechanism to sever the material at a distance away from the outlet of the print head. 1. A method of fabricating an object , the method comprising:discharging a material through an outlet of a print head;moving the print head during discharging to form the object with the material;moving the outlet of the print head a distance away from the object to provide a clearance between the outlet and the object;moving a cutting mechanism through the clearance toward the material; andcausing the cutting mechanism to sever the material at a distance away from the outlet of the print head.2. The method of claim 1 , wherein severing the material includes severing the material at a location outside of the print head.3. The method of claim 1 , wherein severing the material further includes activating the cutting mechanism at least during a time at which the cutting mechanism is moved through the clearance.4. The method of claim 3 , wherein activating the cutting mechanism includes causing an additional motion of the cutting mechanism that is different from the motion of the cutting mechanism through the clearance.5. The method of claim 1 , wherein moving the outlet of the print head away from the object includes moving the outlet along a trajectory that is at an oblique angle relative to an axis of the material at an end of a path.6. The method of claim 1 , wherein moving the outlet of the print head away from the object causes the material to be pulled out of the print head.7. A method of fabricating an object claim 1 , the ...

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Номер записи: 76
31-03-2022 дата публикации

FIBER MANAGEMENT ARRANGEMENT AND METHOD FOR ADDITIVE MANUFACTURING SYSTEM

Номер: US20220097316A1
Автор: Budge Trevor David, Hambling Colin Hugh
Принадлежит: Continuous Composites Inc.

A system is disclosed for additively manufacturing an object. The system may include a support, and a print head being connected to and moved by the support. The print head may have an outlet configured to discharge a material and a cutting mechanism configured to sever the material. The system may also include a controller in communication with the support and the print head. The controller may be configured to cause the print head to discharge material through an outlet, and cause the support to move the print head during discharging to form the object with the material. The controller may also be configured to cause the outlet of the print head to be moved a distance away from the object to provide a clearance between the outlet and the object, to cause a cutting mechanism to be moved through the clearance toward the material, and to cause the cutting mechanism to sever the material at a distance away from the outlet of the print head. 1. A system for additively manufacturing an object , the system comprising:a support;a print head having an outlet configured to discharge a material and a cutting mechanism configured to sever the material, the print head being connected to and moved by the support; and cause the print head to discharge material through an outlet;', 'cause the support to move the print head during discharging to form the object with the material;', 'cause the outlet of the print head to be moved a distance away from the object to provide a clearance between the outlet and the object;', 'cause a cutting mechanism to be moved through the clearance toward the material; and', 'cause the cutting mechanism to sever the material at a distance away from the outlet of the print head., 'a controller in communication with the support and the print head, the controller being configured to2. The system of claim 1 , wherein causing the cutting mechanism to sever the material includes causing the cutting mechanism to sever the material at a location outside of ...

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Номер записи: 77
25-03-2021 дата публикации

ADDITIVE MANUFACTURING COMPONENTS AND METHODS

Номер: US20210086266A1
Автор: Black Kate, Chalker Paul, Sutcliffe Christopher John
Принадлежит: THE UNIVERSITY OF LIVERPOOL

A method of 3D printing comprises: providing a layer of a powder bed; jetting a functional binder onto selected parts of said layer, wherein said binder infiltrates into pores in the powder bed and locally fuses particles of the powder bed in situ; sequentially repeating said steps of applying a layer of powder on top and selectively jetting functional binder, multiple times, to provide a powder bed bonded at selected locations by printed functional binder; and taking the resultant bound 3D structure out of the powder bed. 1. A method of 3D printing comprising:providing a layer of a powder bed;jetting a functional binder onto selected parts of said layer, wherein said binder infiltrates into pores in the powder bed and locally fuses particles of the powder bed in situ;sequentially repeating said steps of applying a layer of powder on top and selectively jetting functional binder, multiple times, to provide a powder bed bonded at selected locations by printed functional binder; andtaking the resultant bound 3D structure out of the powder bed.2. A method as claimed in further comprising a subsequent step of heat treatment either inter-layer or post-build to further fuse the 3D structure.3. A method as claimed in wherein the functional binder comprises a metallic binder.4. A method as claimed in wherein the metallic binder comprises an organometallic material.5. A method as claimed in wherein the organometallic material is a copper metal precursor claim 4 , for example comprising cyclopentadienyl and/or isocyanide ligands.6. A method as claimed in wherein the organometallic material is a nickel metal precursor claim 4 , for example nickel acetylacetonate.7. A method as claimed in wherein the organometallic material is a titanium metal precursor claim 4 , for example a titanium amide.8. A method as claimed in wherein the functional binder comprises a ceramic binder.9. A method as claimed in wherein the binder further comprises metallic or ceramic nanoparticles with ...

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Номер записи: 78
29-03-2018 дата публикации

Three-dimensionally formed object manufacturing apparatus and method of manufacturing three-dimensionally formed object

Номер: US20180085997A1
Автор: Akihiko Tsunoya
Принадлежит: Seiko Epson Corp

A three-dimensionally formed object manufacturing apparatus includes: an ejector ejecting a fluid material including particles, which form a constituent material of a three-dimensionally formed object, and a solvent; a stage on which a layer formed of the fluid material, which is ejected from the ejector, is laminated; an obtainer obtaining an image of the layer formed of the fluid material formed on the stage; a dryer volatilizing the solvent included in the fluid material on the stage; and a determiner determining whether a predetermined amount or more of the solvent is volatilized based on the image obtained by the obtainer, in which a next layer formed of the fluid material is laminated after the determiner determines that the predetermined amount or more of the solvent is volatilized per predetermined layer formation in a laminating direction of the layer formed of the fluid material.

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Номер записи: 79
05-05-2022 дата публикации

Method for the economic manufacturing of metallic parts

Номер: US20220134421A1
Автор: ISAAC Valls Anglés
Принадлежит: Innomaq 21 SL

The present invention relates to a method for the economic production of metallic parts, with high flexibility in the geometry attainable. It also relates to the material required for the manufacturing of those parts. The method of the present invention allows for a very fast manufacturing of the parts. Also some forming technologies applicable to polymers can be used. The method allows for the fast and economic production of complex geometry metallic parts.

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Номер записи: 80
05-05-2022 дата публикации

THREE-DIMENSIONAL SHAPING APPARATUS

Номер: US20220134432A1
Автор: MIYASHITA Takeshi
Принадлежит:

A three-dimensional shaping apparatus includes a stage, a material supply unit that supplies a material containing an inorganic powder and a binder, a laser, and a control unit, and the control unit performs a process of supplying the material onto the stage by controlling the material supply unit, and a process of irradiating the material on the stage with a laser beam with an energy density of 140 J/mmor more by controlling the laser.

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Номер записи: 81
05-05-2022 дата публикации

SELECTIVE ENERGY EMISSION CONTROL IN 3D FABRICATION SYSTEMS

Номер: US20220134434A1
Автор: Nauka Krzysztof, Zhou Chuangyu
Принадлежит: Hewlett-Packard Development Company, L.P.

According to examples, a three-dimensional (3D) fabrication system may include an agent delivery device, an energy generator, and a controller. The agent delivery device may selectively deposit an agent onto a layer of build material particles. In some examples, the agent may include a first substance and a second substance. The controller may control the energy generator to emit energy at selective levels. In some examples, the controller may determine a first energy level tuned to the first substance and a second energy level tuned to the second substance, and may control the energy generator to sequentially emit energy at the first energy level and at the second energy level onto the deposited agent and the layer of build material particles.

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Номер записи: 82
05-05-2022 дата публикации

Three-dimensional shaping apparatus

Номер: US20220134437A1
Автор: Takeshi Miyashita
Принадлежит: Seiko Epson Corp

A three-dimensional shaping apparatus includes a stage, a first material supply unit that supplies a first material, a second material supply unit that supplies a second material having a sintering temperature higher than a melting point of the first material, a laser irradiation unit, and a control unit that controls the laser irradiation unit by selecting a first laser irradiation mode and a second laser irradiation mode in which heat diffusion to a lower layer is smaller than in the first laser irradiation mode, wherein the control unit controls the laser irradiation unit by selecting the second laser irradiation mode when a second material shaped layer formed by supplying the second material onto a first material shaped layer formed by supplying the first material onto the stage is irradiated with a laser from the laser irradiation unit.

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Номер записи: 83
19-03-2020 дата публикации

Additive manufacturing under generated force

Номер: US20200086567A1
Автор: Ayman A. Salem, Daniel P. Satko
Принадлежит: MRL MATERIALS RESOURCES LLC

The present disclosure provides systems and processes for additive manufacturing under generated force. Briefly described, one embodiment of the system comprises a motor that applies a centrifugal acceleration to an additive manufacturing build platform, thereby generating a force at the build platform.

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Номер записи: 84
05-04-2018 дата публикации

Three-dimensional shaped-article manufacturing composition and method for manufacturing three-dimensional shaped article

Номер: US20180093326A1
Автор: Akihiko Tsunoya, Eiji Okamoto, Masaya Ishida
Принадлежит: Seiko Epson Corp

A three-dimensional shaped-article manufacturing composition of the invention is a three-dimensional shaped-article manufacturing composition which is used for manufacturing of a three-dimensional shaped article. The composition described above includes a plurality of shaped-article forming grains forming a substantive portion of the three-dimensional shaped article; a void forming material forming voids in the three-dimensional shaped article; a solvent dispersing the shaped-article forming grains and the void forming material; and a binder dissolved in the solvent. The content of the void forming material is 5 to 50 parts by volume with respect to 100 parts by volume of the shaped-article forming grains.

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Номер записи: 85
12-05-2022 дата публикации

DIP-COAT BINDER SOLUTIONS COMPRISING A DIP-COAT METALLIC PRECURSOR FOR USE IN ADDITIVE MANUFACTURING

Номер: US20220143699A1
Автор: Bonilla Carlos H., Natarajan Arunkumar
Принадлежит: GENERAL ELECTRIC COMPANY

A dip-coat binder solution comprises a dip-coat metallic precursor and a dip-coat binder. The dip-coat binder solution has a viscosity greater than or equal to 1 cP and less than or equal to 150 cP. A method of forming a part includes providing a green body part comprising a plurality of layers of print powder and a print binder, dipping the green body part in a dip-coat binder solution, and heating the dip-coated green body part. The dip-coated green body part is heated to form a coated green body part having a metallic precursor coating on an outer surface of the coated green body part. The coated green body part has a strength greater than or equal to 10 MPa. 1. A dip-coat binder solution comprising:greater than or equal to 10 wt % to less than or equal to 49 wt % of a dip-coat metallic precursor, based on a total weight of the dip-coat binder solution; anda dip-coat binder,wherein the dip-coat binder solution has a viscosity greater than or equal to 1 cP and less than or equal to 150 cP.2. The dip-coat binder solution of claim 1 , wherein the dip-coat binder solution comprises greater than or equal to 20 wt % and less than or equal to 47 wt % of the dip-coat metallic precursor claim 1 , based on a total weight of the dip-coat binder solution.3. The dip-coat binder solution of claim 1 , wherein the dip-coat metallic precursor is selected from the group consisting of an alkaline earth metal claim 1 , a transition metal claim 1 , a post-transition metal claim 1 , a metalloid claim 1 , a rare earth metal claim 1 , and combinations thereof.4. The dip-coat binder solution of claim 1 , wherein the dip-coat metallic precursor comprises an organometallic compound claim 1 , the organometallic compound comprising ferrocene claim 1 , cobaltocene claim 1 , iron pentacarbonyl claim 1 , metal acetylacetonate claim 1 , a cyclopentadienyl complex claim 1 , a metal alkyl claim 1 , a metal aryl claim 1 , or a combination thereof.5. The dip-coat binder solution of claim 1 , wherein ...

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Номер записи: 86
12-05-2022 дата публикации

DETERMINING A VOLUME OF BINDER TO BE APPLIED TO A VOXEL LOCATION

Номер: US20220143705A1
Автор: Puigardeu Aramendia Sergio, Sole Pons Macia
Принадлежит: Hewlett-Packard Development Company, L.P.

A method comprises receiving data representing a 3D object model. The 3D object model is for use in generating a 3D object in a build chamber by forming a plurality of successive layers. Each layer is formed by providing a layer of build material and applying a volume of a binder agent to a plurality of voxel locations of the layer of the build material. The volume of the binder agent to be applied to each voxel location is based on the volume of binder agent to be applied to proximate voxel locations of the 3D object. 1. A method comprising:receiving data representing a 3D object model, the 3D object model for use in generating a 3D object in a build chamber by forming a plurality of successive layers, wherein each layer is formed by providing a layer of build material and applying a volume of a binder agent to a plurality of voxel locations of the layer of the build material, anddetermining the volume of the binder agent to be applied to each voxel location based on the volume of binder agent to be applied to proximate voxel locations of the 3D object.2. The method of claim 1 , wherein the build material comprises a metal powder.3. The method of claim 1 , wherein the binder agent comprises latex.4. The method of claim 1 , wherein the volume of binder agent applied to each voxel location is varied based on a binder penetration value claim 1 , the binder penetration value representing a degree to which the binder agent permeates through the build material in use.5. The method of claim 4 , wherein the binder penetration value is calculated based on a type of the build material claim 4 , a time taken to form each layer of the 3D object claim 4 , and a type of the binder agent used.6. The method of claim 1 , wherein the proximate voxel locations are voxel locations within the same layer of the 3D object.7. The method of claim 1 , wherein the proximate voxel location are voxel locations in another layer of the 3D object.8. The method of claim 1 , comprising varying the ...

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Номер записи: 87
12-05-2022 дата публикации

Additive manufacturing method and device for ceramic and composite thereof

Номер: US20220143868A1
Автор: Cheng Yang, Guilan Wang, Hai&#39;ou Zhang, Xiaoqi Hu
Принадлежит: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Additive manufacturing (AM) methods and devices for high-melting-point materials are disclosed. In an embodiment, an additive manufacturing method includes the following steps. (S1) Slicing a three-dimensional computer-aided design model of a workpiece into multiple layers according to shape, thickness, and size accuracy requirements, and obtaining data of the multiple layers. (S2) Planning a forming path according to the data of the multiple layers and generating computer numerical control (CNC) codes for forming the multiple layers. (S3) Obtaining a formed part by preheating a substrate, performing a layer-by-layer spraying deposition by a cold spraying method, and heating a spray area to a temperature until the spraying deposition of all sliced layers is completed. (S4) Subjecting the formed part to a surface modification treatment by a laser shock peening method.

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Номер записи: 88
12-05-2022 дата публикации

Methods to produce low-defect composite filaments for additive manufacturing processes

Номер: US20220143913A1
Автор: Arturs BERGS, Michael Van Tooren, Wout DE BACKER
Принадлежит: Tighitco Inc, UNIVERSITY OF SOUTH CAROLINA

A composite filament for use in additive manufacturing such as fused filament fabrication is provided, along with methods of its construction, and use incorporation application of sonic energy during the composite filament during initial formation. The composite filament allows for formation of work pieces having a complicated shape that can incorporate continuous filaments in multiple directions and orientations, which can lead to the production of stronger and more useful composite structures.

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Номер записи: 89
28-03-2019 дата публикации

Cutting tool and method for manufacturing a cutting tool

Номер: US20190091771A1
Автор: Sebastian Schleicher
Принадлежит: Kennametal Inc

A cutting tool, in particular for machining metal, is described. It comprises a tool main body that has at least one interface for receiving a cutting insert that can be attached to the tool main body. At least one cooling duct is provided in the tool main body and has, at its end on the interface side, an outlet section with an elongate outlet cross-section on the interface side. The tool main body is manufactured at least in sections by means of a generative manufacturing process. A method for manufacturing such a cutting tool is also presented.

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Номер записи: 90
26-03-2020 дата публикации

Method and system for automated toolpath generation

Номер: US20200096971A1
Автор: Alex S. Goldenberg, Benjamin D. Voiles, Jonathan Hsu, Stephen T. Connor, Theodore Charles Sorom
Принадлежит: Mantle Inc

A method for facilitating part fabrication, such as by automated toolpath generation, can include one or more of: receiving a virtual part; modifying the virtual part; and/or determining toolpaths to fabricate the target part. The toolpaths preferably define an ordered series of additive and subtractive toolpaths, more preferably wherein the additive and subtractive toolpaths are interleaved, which can function to achieve high manufacturing efficiency and/or performance. The method can additionally or alternatively include: generating machine instructions based on the toolpaths; fabricating the target part based on the machine instructions; calibrating the fabrication system; and/or any other suitable elements.

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Номер записи: 91
02-06-2022 дата публикации

WATER SOLUBLE NYLON BINDER COMPOSITIONS FOR ADDITIVE FABRICATION AND RELATED METHODS AND COMPOSITIONS

Номер: US20220168808A1
Автор: Nick Robert J.
Принадлежит: Desktop Metal, Inc.

According to some aspects, techniques are described for fabricating sinterable metallic parts using a binder formulation that comprises a water-soluble polyamide, such as nylon. A binder comprising a water-soluble polyamide may allow a binder jetting process to produce high strength brown parts due to the toughness of such binders as compared to other water soluble binders such as polyacrylic acid or polyvinyl alcohol. Water soluble polyamides may simultaneously provide higher printhead reliability due to their water retaining characteristics and avoid the use of more expensive, toxic and often flammable solvents. Additionally, polyamide binders may react at a curing temperature with the properly selected humectants such as ethylene urea or hydantoin to create a part that is insensitive to strength loss due to moisture in the cured state. 1. A method of additive manufacturing comprising: depositing a layer of metal powder; and', 'depositing a binder composition on at least a portion of the layer of metal powder, the binder composition comprising aqueous polyamide., 'forming one or more parts by performing, a plurality of times2. The method of claim 1 , wherein the binder composition further comprises 2-imidazolidinone.3. The method of claim 1 , wherein the binder composition further comprises a hydantoin or ethylene urea.4. The method of claim 1 , wherein the metal powder comprises steel claim 1 , silver claim 1 , copper or gold.5. The method of claim 1 , wherein the binder composition comprises at least 70% water by weight.6. The method of claim 1 , further comprising drying and/or cross-linking at least some of the deposited binder composition thereby forming a metal-based composite structure.7. The method of claim 6 , comprising cross-linking the binder composition using heat claim 6 , UV light claim 6 , and/or microwave radiation.8. The method of claim 6 , comprising heating the metal-based composite structure in an inert or oxidative environment having a ...

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Номер записи: 92
02-06-2022 дата публикации

COMPOSITES, TOOLING, DIES AND METHODS OF MANUFACTURING THEREOF

Номер: US20220168809A1
Автор: Roy-Mayhew Joseph, Seleznev Maxim
Принадлежит:

Metal composites, tooling and methods of additively manufacturing these are disclosed. Metal objects and structures as provided herein are additively manufactured from metal having an infill pattern infiltrated with a metal powder. Also provided herein are methods of forming such objects and structures. Methods include additively manufacturing a metal structure having an interior printed using an infill. Steps can further include infiltrating the printed infill of the structure with a powder metal thereby forming a composite. 1. A method of manufacturing an object , comprising steps of:3D printing the object comprising a metal, wherein the metal forms an outer shell substantially enclosing an interior volume and an infill portion within the interior volume of the object, the infill portion having a pattern defining structures and space within the interior volume; andinfiltrating the object with a metal powder, such that the metal powder substantially surrounds the infill patterned structures and filling the space within the interior volume of the object.2. The method of claim 1 , wherein the metal powder is a dry metal powder.3. The method of claim 1 , wherein the pattern comprises diamond claim 1 , gyroid claim 1 , hexagonal claim 1 , honeycomb claim 1 , rectangle claim 1 , square claim 1 , or triangle.4. The method of claim 1 , wherein the metal is a filament.5. The method of claim 1 , wherein the metal comprises aluminum claim 1 , copper claim 1 , stainless steel claim 1 , titanium claim 1 , tool steel claim 1 , or Inconel.6. The method of claim 1 , wherein the metal powder comprises aluminum claim 1 , copper claim 1 , stainless steel claim 1 , titanium claim 1 , tool steel claim 1 , or Inconel.7. The method of claim 1 , wherein a percent infill is between about 0% and about 100%.8. The method of claim 1 , wherein when 3D printing the object claim 1 , a surface of the outer shell of the object is unprinted to expose the space within the interior volume.9. The ...

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Номер записи: 93
19-04-2018 дата публикации

Method for producing a container for a medium

Номер: US20180104744A1
Автор: Dietmar Spanke
Принадлежит: Endress and Hauser SE and Co KG

The present disclosure relates to a method for producing a container for a medium, the container having a probe unit on one wall. The method comprises the steps of creating a three-dimensional model of the container comprising the integrated probe unit and additive layer manufacture of the container comprising the integrated probe unit from at least one raw material according to the three-dimensional model.

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Номер записи: 94
29-04-2021 дата публикации

CATALYST AND SYSTEM FOR METHANE STEAM REFORMING BY RESISTANCE HEATING; SAID CATALYST'S PREPARATION

Номер: US20210121857A1
Автор: BENDIXEN Flemming Buus, MORTENSEN Peter Mølgaard, SOREA Alexandru, VALLER Peter
Принадлежит:

The invention relates to a structured catalyst for catalyzing steam methane reforming reaction in a given temperature range T upon bringing a hydrocarbon feed gas into contact with the structured catalyst. The structured catalyst comprises a macroscopic structure, which comprises an electrically conductive material and supports a ceramic coating. The macroscopic structure has been manufactured by 3D printing or extrusion and subsequent sintering, wherein the macroscopic structure and the ceramic coating have been sintered in an oxidizing atmosphere in order to form chemical bonds between the ceramic coating and the macroscopic structure. The ceramic coating supports catalytically active material arranged to catalyze the steam methane reforming reaction, wherein the macroscopic structure is arranged to conduct an electrical current to supply an energy flux to the steam methane reforming reaction. The invention moreover relates to methods of manufacturing the structured catalyst and a system using the structured catalyst. 1. A structured catalyst for catalyzing steam methane reforming reaction in a given temperature range T upon bringing a hydrocarbon feed gas into contact with said structured catalyst , said structured catalyst comprising a macroscopic structure , said macroscopic structure comprising an electrically conductive material , said macroscopic structure having a resistivity between 10Ω-m and 10Ω-m in the given temperature range T , and said macroscopic structure supporting a ceramic coating , wherein the macroscopic structure has been manufactured by extrusion or 3D printing and by subsequent sintering , wherein said macroscopic structure and said ceramic coating have been sintered in an oxidizing atmosphere in order to form chemical bonds between said ceramic coating and said macroscopic structure , wherein said ceramic coating supports catalytically active material , said catalytically active material being arranged to catalyze the steam methane ...

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Номер записи: 95
29-04-2021 дата публикации

THREE-DIMENSIONAL PRINTING

Номер: US20210121951A1
Автор: Kasperchik Vladek, Kowalski Mark H., Shaarawi Mohammed S.
Принадлежит:

An example of a kit for three-dimensional (3D) printing includes a host metal and fumed flow additive aggregates to be mixed with the host metal. The fumed flow additive aggregates include flow additive nanoparticles and partially fused necks between at least some of the flow additive nanoparticles. Each of the flow additive nanoparticles consists of a metal containing compound that is reducible to an elemental metal in a reducing environment at a reducing temperature less than or equal to a sintering temperature of the host metal. 1. A kit for three-dimensional (3D) printing , comprising:a host metal; andfumed flow additive aggregates to be mixed with the host metal, the fumed flow additive aggregates including flow additive nanoparticles and partially fused necks between at least some of the flow additive nanoparticles, each of the flow additive nanoparticles consisting of a metal containing compound that is reducible to an elemental metal in a reducing environment at a reducing temperature less than or equal to a sintering temperature of the host metal.2. The kit as defined in wherein the fumed flow additive aggregates have a surface area greater than 50 m/g.3. The kit as defined in wherein the fumed flow additive aggregates have a surface area greater than 100 m/g.4. The kit as defined in wherein:the average host metal particle size is less than 20 μm; andthe average flow additive nanoparticle size ranges from about 3 nm to about 200 nm.5. The kit as defined in wherein:the fumed flow additive aggregates, when mixed with the host metal, break into individual flow additive nanoparticles, aggregate fragments, or a combination thereof; andthe individual flow additive nanoparticles, the aggregate fragments, or the combination thereof become disposed on a surface of particles of the host metal.6. The kit as defined in wherein at least one of:the fumed flow additive aggregates have an average flow additive aggregate particle size ranging from about 50 nm to about 1000 ...

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Номер записи: 96
29-04-2021 дата публикации

Filled-filament for 3d printing

Номер: US20210122911A1
Автор: Aljoscha Roch, Yaozhong Zhang
Принадлежит: Michigan State University MSU

A filled and 3D printable filament is provided. In another aspect, a flexible filament comprises polyisoprene, a polymer and a filler. An aspect of a filament or fiber apparatus includes a flexible filament composition coiled around a spool, the filament or fiber composition further including polyisoprene, a polymer, and a ceramic or metallic filler. Another aspect of a filament or fiber apparatus includes a flexible filament composition further including an isoprene rubber, a polymer, a sintering aid additive, and a ceramic or metallic filler.

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Номер записи: 97
29-04-2021 дата публикации

HYBRID-ADDITIVE GEAR FOR A WIND TURBINE GEARBOX

Номер: US20210123418A1
Автор: Hasan Raed Zuhair, Minadeo Adam Daniel, Porel Souvik, Raut Ganesh, Ridge Jeremy Charles, Wertz Aaron
Принадлежит:

A method for manufacturing a planet gear or a sun gear of a gearbox of a wind turbine includes forming a base of the planet gear via at least one of casting or forging. The base of the planet gear includes an inner circumferential surface and an outer circumferential surface. Therefore, at least one of the inner circumferential surface or the outer circumferential surface of the planet gear includes a plurality of net or near-net gear teeth. The method also includes applying a coating material to at least a portion of the base of the gear and at least a portion of the plurality of gear teeth of the gear via an additive manufacturing process so as to increase a hardness of the portions of the base and the plurality of gear teeth that includes the coating material. 1. A method for manufacturing a gear of a gearbox of a wind turbine , the gear comprising at least one of a planet gear or a sun gear , the method comprising:forming a base of the gear via at least one of casting or forging, the base of the gear comprising an inner circumferential surface and an outer circumferential surface, the outer circumferential surface of the gear comprising a plurality of gear teeth; and,applying a coating material to at least a portion of the base of the gear and at least a portion of the plurality of gear teeth of the gear via an additive manufacturing process so as to increase a hardness of the portions of the base and the plurality of gear teeth that includes the coating material.2. The method of claim 1 , further comprising forming a journal bearing on the other of the inner circumferential surface or the outer circumferential surface opposite the plurality of gear teeth via the additive manufacturing process.3. The method of claim 1 , further comprising forming the base with one or more voids through a thickness thereof defined between the inner circumferential surface and the outer circumferential surface so as to minimize a weight of the gear.4. The method of claim 1 , ...

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Номер записи: 98
26-04-2018 дата публикации

Operation of three-dimensional printer components

Номер: US20180111319A1
Автор: Alexander Brudny, Daniel Thomas CHRISTIANSEN, Thomas Blasius Brezoczky
Принадлежит: Velo3D Inc

The present disclosure provides three-dimensional (3D) printing systems, apparatuses, methods and non-transitory computer readable media for the production of at least one desired 3D object. The 3D printer described herein comprises, inter alia, an opening that comprises a first side and a second side. A component of the 3D printing, such as a layer dispenser, may be conveyed from the first side of the opening to the second side of the opening (e.g., and vice versa) during the 3D printing. The opening may be closable. A closure of the opening may seclude the component during at least a portion of the 3D printing. Additional features relating to components of the 3D printing systems are described herein.

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Номер записи: 99
09-06-2022 дата публикации

Systems and methods providing dynamic bead spacing and weave fill in additive manufacturing

Номер: US20220176483A1
Автор: Andrew R. Peters, Jonathan H. Paul, Levi J. Mitchell
Принадлежит: Lincoln Global Inc

Embodiments of systems and methods of additive manufacturing are disclosed. In one embodiment, a computer control apparatus accesses multiple planned build patterns corresponding to multiple build layers of a three-dimensional (3D) part to be additively manufactured. A metal deposition apparatus deposits metal material to form at least a portion of a build layer of the 3D part. The metal material is deposited as a beaded weave pattern, based on a planned path of a planned build pattern, under control of the computer control apparatus. A weave width, a weave frequency, and a weave dwell of the beaded weave pattern may be dynamically adjusted during deposition of the beaded weave pattern. The adjustments are under control of the computer control apparatus based on the planned build pattern, as a width of the build layer varies along a length dimension of the build layer.

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Номер записи: 100