Apparatus and method

A method for the additive manufacture of an article using a chamber 100 containing a getter 300. In use, before the introduction of the feed material, the chamber is evacuated using vacuum pump 200, reducing the concentration of a gas within the system. Getter 300 will continue to lower the concentration of the gas, which may be oxygen, to levels of 50 ppm or below. The getter may be a substrate for additive manufacture (e.g. a base plate) and may be heated by fusion source 400 leading to melting/sublimation (e.g., by rastering of a laser or electron beam). The getter may be a stainless steel or comprise an alloy of either titanium, nickel, aluminium or cobalt. The feed material may comprise a first or second row transition metal, a group III element and/or a mixture thereof.

Process for manufacturing additives

Verfahren zur additiven Fertigung eines Bauteiles, bei welchem in einer Prozesskammer (2) zu verfestigende Pulverpartikel mittels eines Hochenergiestrahls verfestigt werden, wobei vor dem Verfestigen die zu verfestigenden Pulverpartikel in der Prozesskammer (2) durch ein Plasma gereinigt werden.

Lamination molding apparatus

Lamination molding apparatus

An irradiation device of a lamination molding apparatus includes: at least one laser source, generating a laser beam; a first galvano scanner, scanning the laser beam; a second galvano scanner, scanning the laser beam; and an irradiation controller, controlling the laser source, the first galvano scanner, and the second galvano scanner. Irradiable ranges of the laser beams by using the first galvano scanner and the second galvano scanner respectively include an entire of a molding region. A first X-axis galvano mirror and a first Y-axis galvano mirror of the first galvano scanner and a second X-axis galvano mirror and a second Y-axis galvano mirror of the second galvano scanner are disposed to be plane-symmetric to each other.

METAL ADDITIVE MANUFACTURING USING GAS MIXTURE INCLUDING OXYGEN

A metal powder additive manufacturing system and method are disclosed that use increased trace amounts of oxygen to improve physical attributes of an object. The system may include: a processing chamber; a metal powder bed within the processing chamber; a melting element configured to sequentially melt layers of metal powder on the metal powder bed to generate an object; and a control system configured to control a flow of a gas mixture within the processing chamber from a source of inert gas and a source of an oxygen containing material, the gas mixture including the inert gas and oxygen from the oxygen containing material.

Flexible 3D Freeform Techniques

This invention relates to processes and systems of rapid prototyping and production. Its features includes flexible material deposition along tangential directions of surfaces of a part to be made, thereby eliminating stair-shape surface due to uniform horizontal layer deposition, increasing width of material deposition to increase build up rate, applying the principles of traditional forming/joining processes, such as casting, fusion welding, plastic extrusion and injection molding in the fabrication process so that various industrial materials can be processed, applying comparatively low cost heating sources, such as induction heating and arc-heating. Additional features include varying width and size of material deposition in accordance with geometry to be formed and applying a differential molding means for improved shape formation and surface finishing.

DEVICE FOR THE GENERATIVE PRODUCTION OF A THREE-DIMENSIONAL OBJECT

A trailing shield and method of use thereof

Additive manufacturing of platinum group metal oxide dispersion strengthened alloys

An article formed of an oxide dispersion strengthened platinum group metal alloy is made by powder bed fusion of a powder mixture comprising a first powder of one or more platinum group metals or an alloy thereof and a second powder of one or more non-platinum-group metals or metalloids, or one or more alloys thereof, where the powder mixture comprises 0.01-0.05 % by weight of the second powder. Oxidation of the second powder is performed either by performing the powder bed fusion in an atmosphere comprising from >0 to 2 mol % oxygen or by activating the powder mixture by heating it in an atmosphere comprising >0 to 2 mol % oxygen and then powder bed fusing in an inert atmosphere. The second powder can comprise particles of cerium, tungsten, tantalum, hafnium, manganese, thorium, calcium, aluminium, zirconium and/or yttrium or alloys thereof. The article can be a bushing for glass fibre production or a space thruster nozzle. The process can also be used to make carbide, silicide and nitride ...

Additive manufacturing using heated gettering

COMBINED ADDITIVE MANUFACTURING AND MACHINING SYSTEM AND METHOD OF MANUFACTURING AND FINISHING A COMPONENT

PART MANIPULATION USING PRINTED MANIPULATION POINTS

APPARATUS WITH COOLING ELEMENT FOR VAPOR CONDENSING IN ADDITIVE MANUFACTURING

An apparatus (10) for a beam-assisted additive manufacturing device (1) is presented. The apparatus comprises a cooling element (11) with a functional surface (12), wherein the cooling element (11) is surrounding or to be placed around a beam window (2) for admitting a beam (3) to a build space (4) of the device (1) during a manufacturing process, wherein the apparatus (10) is configured such that the functional surface (12) is or can further be set to a temperature (T) at which vapor (V) emerging from the manufacturing process spontaneously condensates on the functional surface (12) of the cooling element (11). Moreover, a related additive manufacturing device (1) and a use of the apparatus (10) are presented.

METHOD OF MANUFACTURING ALUMINUM ALLOY ARTICLES

Metal additive manufacturing using gas mixture including oxygen

A metal powder additive manufacturing system and method are disclosed that use increased trace amounts of oxygen to improve physical attributes of an object. The system may include: a processing chamber; a metal powder bed within the processing chamber; a melting element configured to sequentially melt layers of metal powder on the metal powder bed to generate an object; and a control system configured to control a flow of a gas mixture within the processing chamber from a source of inert gas and a source of an oxygen containing material, the gas mixture including the inert gas and oxygen from the oxygen containing material.

SYSTEM FOR PRODUCING THREE-DIMENSIONAL OBJECTS

METHOD FOR MANUFACTURING EQUIAXED CRYSTAL ALUMINUM ALLOY CAST INGOT BY USING ADDITIVE MANUFACTURING AND RAPID SOLIDIFICATION TECHNIQUES

Selective laser solidification apparatus and method

A selective laser solidification apparatus including: a powder bed onto which a powder layer can be deposited, a gas flow unit for passing a flow of gas over the powder bed along a gas flow direction, a laser scanning unit for scanning a laser beam over the powder layer to selectively solidify at least part of the powder layer to form at least one object and a processing unit for selecting a scanning sequence of the laser beam based on the gas flow direction.

Additive manufacturing

A nanofluid laser entrainment additive manufacturing apparatus, system and method including a substrate, a dilute nanofluid of inert gas suspended nanoparticles on the substrate, a focused energy beam that irradiates the nanoparticles to selectively melt the nanoparticles, and a raster system that raster scans the focused energy beam across the inert gas suspended nanoparticles to create predetermined shapes by additive manufacturing.

Additive manufacturing of platinum group metal oxide dispersion strengthened alloys

An installation for additive manufacturing by SLM or SLS

An AM installation utilising SLM or SLS a chamber of a housing with a protective atmosphere, a support structure in the chamber defines an upper horizontal surface on which a laser source is operable for focusing onto predetermined regions of a build area of the plane of the horizontal surface. The laser beam source is operable so areas of each of successive layers of powder material are sintered or fully molten throughout its layer thickness. A dosing device raises successive quantities of powder to the level of the upper surface to enable a re-coater to form the layers. A separable build device unit defines build chamber opening at the upper surface, and includes a lift table and an electric drive by which the lift table is stepwise vertically adjustable so a progressively built component is lowerable into the build chamber.

System and method for additive metal manufacturing

A system for additive metal manufacturing, including a deposition mechanism, a translation mechanism mounting the deposition mechanism to the working volume, and a stage. A method for additive metal manufacturing including: selectively depositing a material carrier within the working volume; removing an additive from the material carrier; and treating the resultant material.

DEVICE AND METHOD FOR MANUFACTURING THREE-DIMENSIONAL WORKPIECES

Die Erfindung betrifft eine Vorrichtung (1) zum Herstellen von dreidimensionalen Werkstücken (15), umfassend einen Träger (7) zum Aufnehmen von Rohstoffpulver (9), eine sich im Wesentlichen vertikal erstreckende Baukammerwand (11, 11a, 11b), welche dazu eingerichtet ist, das auf den Träger (7) aufgetragene Rohstoffpulver (9) seitlich zu begrenzen und abzustützen, eine Bestrahlungseinheit (17) zum selektiven Bestrahlen des auf den Träger (7) aufgetragenen Rohstoffpulvers (9) mit elektromagnetischer Strahlung oder Teilchenstrahlung, um auf dem Träger (7) ein aus dem Rohstoffpulver (9) gefertigtes Werkstück (15) durch ein generatives Schichtbauverfahren herzustellen, wobei die Bestrahlungseinheit (17) mindestens ein optisches Element umfasst, und eine vertikale Bewegungseinrichtung (31), welche dazu eingerichtet ist, die Bestrahlungseinheit (17) vertikal bezüglich des Trägers (7) zu bewegen, wobei die Baukammerwand (11, 11a, 11b) und der Träger (7) dazu eingerichtet sind, während der vertikalen ...

APPARATUS FOR ADDITIVELY MANUFACTURING THREE-DIMENSIONAL OBJECTS

Apparatus (1) for additively manufacturing of three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy beam, with a stream generating unit (2) configured to generate a stream of a process gas (3) being capable of being charged with particles (4), in particular non-consolidated particulate build material and/or smoke and/or smoke residues, generated during operation of the apparatus (1) and a filter unit (5) configured to separate particles (4) from the stream of process gas (3), wherein the filter unit (5) comprises a filter chamber (6) with at least one filter element (7) at least partly arranged in the streaming path of the generated stream of process gas (3), wherein particles (4) in the stream of process gas (3) are separated from the process gas (3) by the filter element (7), wherein a particle reception chamber (13, 26, 28) is separably connected or connectable to ...

Apparatus For Additively Manufacturing Three-Dimensional Objects

An apparatus for additively manufacturing three-dimensional objects may include a first detection device configured to detect a first process parameter during operation of the apparatus, and to generate a first data set comprising information relating to the first process parameter, a second detection device configured to detect a second process parameter during operation of the apparatus, and to generate a second data set comprising information relating to the second process parameter; and a data processing device configured to determine a mutual dependency between the first process parameter and the second process parameter based at least in part on the first data set and the second data set. The mutual dependency may include a possible influence or a real influence of the first process parameter on the second process parameter. The first process parameter may include a chemical parameter and/or a physical parameter of an atmosphere within a process chamber of the apparatus. The second ...

3D LAYERING/MOLDING DEVICE AND MANUFACTURING METHOD FOR 3D LAYERED/MOLDED OBJECT

HIGH CAPACITY APPARATUS FOR LAYERED MANUFACTURING FROM POWDERED MATERIALS

Apparatus for additively manufacturing three-dimensional objects

Apparatus (1) for additively manufacturing of three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy beam, with a stream generating unit (2) configured to generate a stream of a process gas (3) being capable of being charged with particles (4), in particular non-consolidated particulate build material and/or smoke and/or smoke residues, generated during operation of the apparatus (1) and a filter unit (5) configured to separate particles (4) from the stream of process gas (3), wherein the filter unit (5) comprises a filter chamber (6) with at least one filter element (7) at least partly arranged in the streaming path of the generated stream of process gas (3), wherein particles (4) in the stream of process gas (3) are separated from the process gas (3) by the filter element (7), wherein a particle reception chamber (13, 26, 28) is separably connected or connectable to ...

LASER TREATMENT SYSTEMS AND METHODS FOR IN-SITU LASER SHOCK PEENING (LSP) TREATMENT OF PARTS DURING PRODUCTION THEREOF BY A SELECTIVE LASER SINTERING OR MELTING (SLS/SLM) PROCESS, AND ADDITIVE MANUFACTURING SYSTEMS AND METHODS IMPLEMENTING THE SAME

LAMINIERUNGSFORMVORRICHTUNG

Eine Laminierungsformvorrichtung umfasst eine Kammer, die einen Formbereich abdeckt, einen Bestrahler, der eine im Formbereich ausgebildete Materialschicht mit einem Laserstrahl oder einem Elektronenstrahl bestrahlt und eine verfestigte Schicht bildet, einen Versorgungsanschluss, der ein Inertgas an die Kammer liefert, einen Auslassanschluss, der das Inertgas aus der Kammer auslässt, eine Inertgasversorgung, die an den Versorgungsanschluss angeschlossen ist und das Inertgas an die Kammer liefert, einen Qualmkollektor und einen Sauerstoffkonzentrationsregler. Der Qualmkollektor hat einen Einlass, einen Ladebereich, einen Sammelbereich und einen Auslass. Der Sauerstoffkonzentrationsregler ist zwischen dem Auslassanschluss und dem Ladeabschnitt verbunden und liefert, mit dem Qualmkollektor ein Einstellgas mit einer Sauerstoffkonzentration, die höher ist als eine Sauerstoffkonzentration des Inertgases, das vom dem Auslassanschluss abgelassen wird.

Verfahren zur additiven Fertigung eines Bauteils, insbesondere für ein Fahrzeug

Die Erfindung betrifft ein Verfahren zur additiven Fertigung eines Bauteils (10) aus einem metallischen Werkstoff. Ein erster Teilbereich (TB1) des Bauteils (10) wird hergestellt, indem ein erster Teil (T1) des metallischen Werkstoffes in einer ersten Schutzgasatmosphäre (SG1) aufgeschmolzen wird, wodurch in der ersten Schutzgasatmosphäre (SG1) aus dem ersten Teil (T1) eine erste Schmelze (SM1) gebildet wird, aus welcher zumindest der erste Teilbereich (TB1) durch additive Fertigung hergestellt wird. Ein zweiter Teilbereich (TB2) des Bauteils (10) wird hergestellt, indem ein zweiter Teil (T2) des metallischen Werkstoffes in einer zweiten Schutzgasatmosphäre (SG2) aufgeschmolzen wird, wodurch in der zweiten Schutzgasatmosphäre (SG2) aus dem zweiten Teil (T2) eine zweite Schmelze (SM2) gebildet wird, aus welcher zumindest der zweite Teilbereich (TB2) durch additive Fertigung hergestellt wird. Die zweite Schutzgasatmosphäre (SG2) umfasst gezielt zumindest gasförmigen Stickstoff und/oder gezielt ...

Lamination molding apparatus

A lamination molding apparatus includes: a material layer forming device that forms a material layer in a molding region; an irradiator that sinters or melts the material layer by irradiating a laser light or an electron beam and forms a solidified layer; and a cooling device that cools, to a predetermined cooling temperature, at least a part including the upper surface of a solidified body obtained by laminating the solidified layer. The material layer forming device includes: a base having the molding region, a recoater head disposed on the base, a recoater head driving device that reciprocates the recoater head in a horizontal direction, and a blade that is arranged on the recoater head and that levels material powder to form the material layer. The cooling device includes: a cooling body that is controlled to the cooling temperature and comes into contact with the upper surface of the solidified body, and mounting members that mount the cooling body to the recoater head.

LONG AND HIGH RESOLUTION STRUCTURES FORMED BY ADDITIVE MANUFACTURING TECHNIQUES

A method of additive manufacture suitable for large and high resolution structures is disclosed. The method may include sequentially advancing each portion of a continuous part in the longitudinal direction from a first zone to a second zone. In the first zone, selected granules of a granular material may be amalgamated. In the second zone, unamalgamated granules of the granular material may be removed. The method may further include advancing a first portion of the continuous part from the second zone to a third zone while (1) a last portion of the continuous part is formed within the first zone and (2) the first portion is maintained in the same position in the lateral and transverse directions that the first portion occupied within the first zone and the second zone.

Apparatus for producing three-dimensional work pieces by additive layer manufacturing method which comprises a drying device

CONTROLLED ENVIRONMENT FOR ADDITIVE MANUFACTURING

MANAGING POWDER MOBILITY IN BINDER JETTING FOR ADDITIVE MANUFACTURING

Devices, systems, and methods are directed to the use of vapor phase change in binder jetting processes for forming three-dimensional objects. In general, a vapor of a first fluid may be directed to a layer of a powder spread across a build volume. The vapor may condense to reduce mobility of the particles of the powder of the layer. For example, the condensing vapor may reduce the likelihood of particle ejection from the layer and, thus, may reduce the likelihood of clogging or otherwise degrading a printhead used to jet a second fluid (e.g., a binder) to the layer. Further, or instead, the condensing vapor may increase the density of the powder in the layer which, when repeated over a plurality of layers forming a three-dimensional object, may reduce the likelihood of slumping of the part during sintering.

Tungsten heavy metal alloy powders and methods of forming them

In various embodiments, metallic alloy powders are formed at least in part by spray drying to form agglomerate particles and/or plasma densification to form composite particles.

Method and apparatus for additive manufacturing

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.

CHAMBER SYSTEMS FOR ADDITIVE MANUFACTURING

An apparatus and a method for powder bed fusion additive manufacturing involve a multiple-chamber design achieving a high efficiency and throughput. The multiple-chamber design features concurrent printing of one or more print jobs inside one or more build chambers, side removals of printed objects from build chambers allowing quick exchanges of powdered materials, and capabilities of elevated process temperature controls of build chambers and post processing heat treatments of printed objects. The multiple-chamber design also includes a height-adjustable optical assembly in combination with a fixed build platform method suitable for large and heavy printed objects.

APPARATUS AND METHOD

A method of additive manufacturing of an article from a feed material in a chamber is described, the method comprising: evacuating at least some of a first gas of a set of gases from the chamber, comprising reducing a pressure therein from a first pressure to a second pressure of a set of pressures, wherein the first gas has a first concentration and a second concentration of a set of concentrations at the first pressure and the second pressure respectively; gettering at least some of the first gas from the evacuated chamber using a getter, thereby lowering a concentration of the first gas from the second concentration to a third concentration of the set of concentrations; and additive manufacturing the article from the feed material in the gettered chamber.

DEVICES, SYSTEMS, AND METHODS FOR MONITORING A POWDER LAYER IN ADDITIVE MANUFACTURING PROCESSES

Method for manufacturing an aluminium alloy part by additive manufacturing from a mixture of powders containing yttria-stabilized zirconia

Method for manufacturing an aluminium alloy part by additive manufacturing comprising a step during which a layer of a mixture of powders is locally melted and then solidified, characterised in that the mixture of powders comprises: first particles comprising at least 80% by mass of aluminium and up to 20% by mass of one or more additional elements, and second yttria-stabilized zirconia particles, the mixture of powders comprising at least 1.5% by volume of second particles.

Additive manufacturing system for object creation from powder using a high flux laser for two-dimensional printing

A method of additive manufacture is disclosed. The method can include providing an enclosure surrounding a powder bed and having an atmosphere including helium gas. A high flux laser beam is directed at a defined two dimensional region of the powder bed. Powder is melted and fused within the defined two dimensional region, with less than 50% by weight of the powder particles being displaced into any defined two dimensional region that shares an edge or corner with the defined two dimensional region where powder melting and fusing occurs.

METHOD FORPRODUCING A BLADE OF A TURBOMACHINE FROM A GRADED TIAL ALLOY, AND CORRESPONDINGLY PRODUCED COMPONENT

Verfahren zum 3D-Drucken unter Schutzgasatmosphäre und 3D-Druckvorrichtung

Ein 3D-Druckverfahren weist die Schritte auf: Bereitstellen (M11) eines Schmelzbestandteils, welcher aus der Gruppe von metallischen Materialien, metallischen Materialkombinationen und metallischen Legierungen ausgewählt wird, in einer Pulvermischung (P); Erzeugen (M12) einer Schutzgasatmosphäre in einer 3D-Druckvorrichtung (10), wobei das Schutzgas der Schutzgasatmosphäre einen wobei das Schutzgas der Schutzgasatmosphäre mindestens einen Anteil aufweist, welcher aus der Gruppe von Edelgasen ausgewählt und dabei bevorzugt Neon ist und/oder mindestens einen Inertgasanteil aufweist; und Laserschmelzen (M13) der Pulvermischung (P) in einem selektiven Laserschmelzverfahren, in einem Arbeitsbereich der 3D-Druckvorrichtung (10), wobei die Pulvermischung (P) einen Schmelzbestandteil aufweist, der aus der dritten Hauptgruppe des Periodensystems ausgewählt ist.

Enclosed additive manufacturing system

A method of additive manufacture is disclosed. The method may include restricting, by an enclosure, an exchange of gaseous matter between an interior of the enclosure and an exterior of the enclosure. The method may further include running multiple machines within the enclosure. Each of the machines may execute its own process of additive manufacture. While the machines are running, a gas management system may maintain gaseous oxygen within the enclosure at or below a limiting oxygen concentration for the interior.

Laminate shaped article, method for manufacturing the same, and metal powder for laminate shaping

Provided are a laminate shaped article made of a maraging steel and having excellent toughness, a method for manufacturing the same, and a metal powder for laminate shaping. The laminate shaped article is made of a maraging steel comprising 0.1-5.0 mass % of Ti. When sis is performed on concentration distribution of Ti in a cross section parallel to a lamination direction of the above laminate shaped article, a length of a linear Ti-rich portion having a Ti concentration B of (1.5×A) or more with respect to an average Ti concentration A in the cross section is 15 μm or less. In addition, the method for manufacturing the laminate shaped article uses a metal powder made of a maraging steel comprising 0.1-5.0 mass % of Ti, and a heat source output is set to 50-330 W and a scanning speed is set to 480-3000 mm/sec during the laminate shaping.

LAMINATION MOLDING APPARATUS

A lamination molding apparatus includes: a material layer forming device that forms a material layer in a molding region; an irradiator that sinters or melts the material layer to form a solidified layer; and a cooling device that cools, to a cooling temperature, at least a part including an upper surface of a solidified body. The material layer forming device includes: a base having the molding region, a recoater head disposed on the base, a recoater head driving device that reciprocates the recoater head in a horizontal direction, and a blade that is arranged on the recoater head and that levels material powder to form the material layer. The cooling device includes: a cooling body that is controlled to the cooling temperature and comes into contact with the upper surface of the solidified body, and a mounting member that mounts the cooling body to the recoater head.

SYSTEM AND METHOD FOR MONITORING AND RECOATING IN AN ADDITIVE MANUFACTURING ENVIRONMENT

Metal composite, a biocompatible implant thereof and methods of fabricating thereof

A metal composite that includes a core comprising titanium, zirconium, and niobium, and a shell comprising titanium, zirconium, and niobium, wherein the shell covers at least a portion of the core; and a method of fabricating the metal composite by mechanically alloying and 3D printing a metal powder comprising titanium, niobium, and zirconium. Various embodiments of the metal composite and the method of fabricating the same are also provided.

Additive manufacturing apparatus utilizing combined electron beam selective melting and electron beam cutting

An additive manufacturing apparatus utilizing combined electron beam selective melting and electron beam cutting. One electron beam emitting, focusing, and scanning device (6) is capable of emitting electron beams (67, 68) in three modes of heating, selective melting, and electron beam cutting. The electron beam in the heating mode is emitted to scan and preheat a powder bed (7). The electron beam (67) in the selective melting mode is emitted to scan and melt powder (71) in a section outline to form a section layer of a component. The electron beam (68) in the electron beam cutting mode is emitted to perform one or more cutting scans on inner and outer outlines (74, 75) of a section of the component to obtain accurate and smooth inner and outer outlines of the section. The heating, melting deposition, and outline cutting processes are repeated to obtain a required three-dimensional physical component.

METHOD OF REDUCING DISTORTION IN AN ADDITIVELY MANUFACTURED PART

DYNAMIC OPTICAL ASSEMBLY FOR LASER-BASED ADDITIVE MANUFACTURING

A method and an apparatus of a powder bed fusion additive manufacturing system that enables a quick change in the optical beam delivery size and intensity across locations of a print surface for different powdered materials while ensuring high availability of the system. A dynamic optical assembly containing a set of lens assemblies of different magnification ratios and a mechanical assembly may change the magnification ratios as needed. The dynamic optical assembly may include a transitional and rotational position control of the optics to minimize variations of the optical beam sizes across the print surface.

LONG AND HIGH RESOLUTION STRUCTURES FORMED BY ADDITIVE MANUFACTURING TECHNIQUES

A method of additive manufacture suitable for large and high resolution structures is disclosed. The method may include sequentially advancing each portion of a continuous part in the longitudinal direction from a first zone to a second zone. In the first zone, selected granules of a granular material may be amalgamated. In the second zone, unamalgamated granules of the granular material may be removed. The method may further include advancing a first portion of the continuous part from the second zone to a third zone while (1) a last portion of the continuous part is formed within the first zone and (2) the first portion is maintained in the same position in the lateral and transverse directions that the first portion occupied within the first zone and the second zone.

COBALT-BASED ALLOY PRODUCT

Verfahren zur additven Fertigung eines Werkstücks

Die vorliegende Erfindung betrifft ein Verfahren zur additiven Fertigung eines Werkstücks aus einem Werkstoff, wobei der Werkstoff schichtweise auf einen Grundkörper (101) aufgebracht und aufgeschmolzen wird und/oder wobei der Werkstoff schichtweise aufgeschmolzen und auf den Grundkörper (101) aufgebracht wird, wobei der Grundkörper (101) vor dem Auftragen des Werkstoffs und/oder während des Auftragens des Werkstoffs auf eine Fertigungstemperatur erwärmt wird, wobei die Fertigungstemperatur zwischen einer vorgebbaren Mindesttemperatur und der Schmelztemperatur des Werkstoffs liegt.

SELECTIVE LASER SOLIDIFICATION APPARATUS AND METHOD

A method of selecting a scanning sequence of a laser beam in a selective laser solidification process, in which one or more objects are formed layer-by-layer by repeatedly depositing a layer of powder on a powder bed and scanning the laser beam over the deposited powder to selectively solidify at least part of the powder layers, includes determining an order in which areas should be scanned by: projecting a debris fallout zone that would be created when solidifying each area based on a gas flow direction of a gas flow passed over the powder bed; determining whether one or more other areas to be solidified fall within the debris fallout zone; and selecting to solidify the one or more other areas that fall within the debris fallout zone before solidifying the area from which the debris fallout zone has been projected.

MELT POOL MONITORING SYSTEM AND METHOD FOR DETECTING ERRORS IN A MULTI-LASER ADDITIVE MANUFACTURING PROCESS

SEAL SYSTEM

Method and apparatus for manufacturing equiaxed crystal aluminum alloy cast ingot by using additive manufacturing and rapid solidification techniques

A method and apparatus for manufacturing an equiaxed crystal aluminum alloy cast ingot by using additive manufacturing and rapid solidification techniques are provided. The apparatus comprises: a metal heating mechanism and a negative pressure cooling mechanism. The metal heating mechanism is located above the negative pressure cooling mechanism and is connected thereto by a nozzle. The negative pressure cooling mechanism comprises a vacuum chamber having an air inlet hole and an air outlet hole, and a three-dimensional moving ingot mechanism disposed inside the vacuum chamber. The three-dimensional moving ingot mechanism comprises a moving ingot and a two-dimensional moving platform vertically connected to the moving ingot. A water cooling mechanism is disposed outside the moving ingot, and the moving ingot is driven by a precision motor to precisely move up and down.

TRANSPORT UNIT AND PROVISION OF A THREE-DIMENSIONAL COMPONENT

PRODUCTION METHOD WITH ADDITIVE COMPONENT MANUFACTURE AND FINISHING

Feuchtigkeit Ausgleichende Aktivator-Steuerung für Additive Fertigung

Systeme und Verfahren für die additive Fertigung mit Feuchtigkeitskompensation sind bereitgestellt. Ein erster Speicher für einen Aktivator, ein zweiter Speicher für ein Bindemittel und ein dritter Speicher für ein Baumaterial, das mittels einer oder mehrerer Ablagerungsvorrichtungen in einem Baukasten abgelagert werden kann, sind bereitgestellt. Ein Steuergerät empfängt von einem Feuchtigkeitssensor Daten, die den Umgebungsfeuchtigkeitsgrad anzeigen, und weist eine mit dem ersten Speicher verbundene Steuervorrichtung an, eine aus dem ersten Speicher entnommene Menge des Aktivators auf der Grundlage des Umgebungsfeuchtigkeitsgrads anzupassen.

Additive manufacturing of MLD-enhanced drilling tools

Methods, systems, and apparatus for carrying out rapid on-site optical chemical analysis in oil feeds are described. In one aspect, a system for manufacture of a tool includes a deposition reactor configured for molecular layer deposition or atomic layer deposition of metal powder to manufacture coated particles, a fabrication unit configured for 3D printing of the tool, and a controller that controls the deposition reactor and the fabrication unit, wherein the fabrication unit and the deposition reactor are integrated for automated fabrication of the tool using the coated particles from the deposition reactor as building material for the 3D printing.

METHOD FOR THE ADDITIVE MANUFACTURE OF METALLIC COMPONENTS

POWDER RAPID PROTOTYPING MANUFACTURING

LONG AND HIGH RESOLUTION STRUCTURES FORMED BY ADDITIVE MANUFACTURING TECHNIQUES

A method of additive manufacture suitable for large and high resolution structures is disclosed. The method may include sequentially advancing each portion of a continuous part in the longitudinal direction from a first zone to a second zone. In the first zone, selected granules of a granular material may be amalgamated. In the second zone, unamalgamated granules of the granular material may be removed. The method may further include advancing a first portion of the continuous part from the second zone to a third zone while (1) a last portion of the continuous part is formed within the first zone and (2) the first portion is maintained in the same position in the lateral and transverse directions that the first portion occupied within the first zone and the second zone.

SELECTIVE LASER SOLIDIFICATION APPARATUS AND METHOD

A selective laser solidification apparatus including: a powder bed onto which a powder layer can be deposited, a gas flow unit for passing a flow of gas over the powder bed along a gas flow direction, a laser scanning unit for scanning a laser beam over the powder layer to selectively solidify at least part of the powder layer to form at least one object and a processing unit for selecting a scanning sequence of the laser beam based on the gas flow direction.

Adaptive 3D printing

Methods provide for fabricating objects through additive manufacturing in a manner that compensates for deformations introduced during post-print processing, such as sintering. An initial model may be divided into a plurality of segments, the initial model defining geometry of an object. For each of the segments, modified geometry may be calculated, where the modified geometry compensates for a predicted deformation. Print parameters can then be updated to incorporate the modified geometry, where the print parameters define geometry of the printed object (e.g., configuration settings of the printer, a tool path, an object model). The object may then be printed based on the updated print parameters.

Additively manufactured non-uniform porous materials and components in-situ with fully material, and related methods, systems and computer program product

An additively manufactured non-uniform porous material in-situ with dense material for the in situ additive manufacturing of both porous and dense material in the same part so that no secondary process is required. The additively manufactured non-uniform porous material in-situ with dense material generally includes additively manufactured porous material which can be tuned for porosity and density, has the ability to be built in situ with dense material, and can also be tuned for response to pressure waves. Also included are computer program products, methods and components and systems manufactured using the methods.

Verfahren und Vorrichtung zur additiven Fertigung unter Schutzgas

Bei einem Verfahren zur additiven Fertigung eines Werkstücks unter Schutzgas wird ein Werkstück aus einer Abfolge von Werkstückkonturen zusammengesetzt, die jeweils durch selektives Sintern oder Schmelzen eines pulver- oder drahtförmigen Werkstoffs durch Beaufschlagen mit einem Energiestrahl gefertigt werden, wobei die Fertigung einer Werkstückkontur unter Einwirkung eines aus Kohlendioxid und einem Inertgas bestehenden Schutzgases erfolgt. Erfindungsgemäß wird die chemische Zusammensetzung einer jeden Werkstückkontur nach einem vorgegebenen Programm durch die Variation der Zusammensetzung des Schutzgases verändert. Eine nach der Fertigung der Werkstückkontur erfolgende Wärmebehandlung sorgt für definierte mechanisch-technologische Gütewerte der jeweiligen Werkstückkontur. Auf diese Weise wird ein Werkstück mit Zonen definierter mechanisch-technologischer Gütewerte hergestellt.

IRRADIATING DEVICE AND MACHINE TOOL COMPRISING SAME

Gaszuführvorrichtung für eine Herstellungsvorrichtung, Sprühvorrichtung, 3D-Additivherstellungsvorrichtung, Additivherstellungssystem und geformter Gegenstand und Gaszuführverfahren für eine Herstellungsvorrichtung

Es wird eine Gaszuführvorrichtung (SG) für eine Herstellungsvorrichtung bereitgestellt, die fähig ist, eine höhere Qualität zu realisieren. Die Gaszuführvorrichtung (SG) umfasst eine Inertgaszuführquelle (G), die Inertgas zuführt, eine Zuführleitung (L11), die mit der Inertgaszuführquelle (G) verbunden ist, ein Stickstoffentfernungsabschnitt (11), der an der Zuführleitung bereitgestellt ist und der zumindest einen Teil von Stickstoff in dem Inertgas entfernt, und ein Sauerstoffentfernungsabschnitt (12), der an der Zuführleitung (L11) bereitgestellt ist und die mindestens einen Teil von Sauerstoff in dem Inertgas entfernt.

Powder based 3D printing

In one example, a memory having instructions thereon that when executed cause a 3D printing system to repeatedly form each of multiple successive layers of powdered build material on a platform and apply a functional agent to build material in each layer, create a pressure difference across a thickness of build material on the platform, and increase the pressure difference over an extent of build material on the platform as the build material on the platform gets thicker.

MANUFACTURING SYSTEM OF ADDITIVE MANUFACTURING BODY AND MANUFACTURING METHOD OF ADDITIVE MANUFACTURING BODY

A manufacturing system of an additive manufacturing body is provided, by which the accuracy of evaluating a defect during additive manufacturing and the quality of the body can be improved. A manufacturing system of an additive manufacturing body of the present invention includes: an additive manufacturing device; an inspection device having a camera for photographing the powder layer or the solidified layer; and a control device that controls the additive manufacturing device and the inspection device, in which: the camera can photograph the powder layer for each powder layer forming step that is performed repeatedly, or can photograph the solidified layer for each solidified layer forming step that is performed repeatedly; and the control device selects a photographing condition of the camera according to the conditions of the additive manufacturing process.

METHOD FOR MANUFACTURING METAL PRINTED OBJECT

An object of the present invention is to provide a method for manufacturing a metal printed object, which can reduce the manufacturing time by a simple method without requiring a large-scale modification of the manufacturing apparatus, and the present invention provides a method for manufacturing a metal printed object in which, in the presence of a shielding gas supplied around a metal powder on a base plate, heat is supplied to the metal powder using energy rays to print a metal layer on the base plate, and the metal layer is subsequentially laminated, wherein when modeling a first metal layer in contact with the base plate, mass per unit volume of the shield gas at a temperature of 25° C. and a pressure of 0.1 MPa is in a range of 1.00×10−4 g/cm3 to 1.3×10−3 g/cm3.

LAMINATION MOLDING APPARATUS

A lamination molding apparatus includes a chamber that covers a molding region, an irradiator that irradiates a material layer formed in the molding region with a laser beam or an electron beam and forms a solidified layer, a supply port that supplies an inert gas to the chamber, a discharge port that discharges the inert gas from the chamber, an inert gas supplier which is connected to the supply port and supplies the inert gas to the chamber, a fume collector, and an oxygen concentration adjustor. The fume collector has an inlet, a charging section, a collecting section, and an outlet. The oxygen concentration adjustor is connected between the discharge port and the charging section and supplies, to the fume collector, an adjusting gas having an oxygen concentration higher than an oxygen concentration of the inert gas which is discharged from the discharge port.

Recoaters with gas flow management

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.

ENHANCED ELECTRON BEAM GENERATION

LASER POWDER BED FUSION ADDITIVE MANUFACTURING METHODS

Printhead for a 3D printer

The invention relates to a printhead (1) for a 3D printer, particularly a metal printer, comprising a housing (3), a device (28) for supplying a metal (14), a reservoir (7, 27), a nozzle device (2) and a piston (5), the nozzle device (2) comprising a guide sleeve (11), a nozzle plate (9) provided with an outlet (10), and a clamping device (4). The nozzle plate (9) and the guide sleeve (11) are mutually elastically braced by means of the clamping device (4), and the guide sleeve (11) and the reservoir (7, 27) are mutually elastically braced by means of the clamping device (4).

THREE DIMENSIONAL OBJECTS COMPRISING ROBUST ALLOYS

The present disclosure provides three-dimensional (3D) printing methods, apparatuses, systems and software that effectuate formation of a robust 3D object comprising at least one metal alloy. The 3D object may be formed by 3D printing. The 3D object may comprise diminished defects (e.g., heat cracks). The alloy may be formed by diffusion. The diffusion may be a controlled diffusion. The control may comprise (e.g., real time) temperature control during the formation of the 3D object. The 3D object may comprise controlled crystal structure and/or metallurgical phases.

METHOD FOR TESTING NEW MATERIAL COMPOSITIONS FOR POWDER BED-BASED LASER MELTING, AND DEVICE THEREFOR

GASKONZENTRATIONSMESSGERÄT, STEUERVERFAHREN FÜR GASKONZENTRATIONSMESSGERÄT, LAMINIERUNGSFORMVORRICHTUNG UND STEUERVERFAHREN FÜR SAUERSTOFFKONZENTRATIONSMESSGERÄT FÜR EINE LAMINIERUNGSFORMVORRICHTUNG

Ein Gaskonzentrationsmessgerät umfasst einen ersten Gaskonzentrations-Detektionssensor, der in der Lage ist, zumindest eine Gaskonzentration in einem ersten Konzentrationsbereich zu detektieren, einen zweiten Gaskonzentrations-Detektionssensor, der in der Lage ist, zumindest eine Gaskonzentration in einem zweiten Konzentrationsbereich zu detektieren, und eine Steuereinheit. Ein oberer Grenzwert des zweiten Konzentrationsbereichs ist niedriger als ein oberer Grenzwert des ersten Konzentrationsbereichs, und ein unterer Grenzwert des zweiten Konzentrationsbereichs ist niedriger als ein unterer Grenzwert des ersten Konzentrationsbereichs. Die Steuereinheit ist konfiguriert, entweder den unteren Grenzwert des ersten Konzentrationsbereichs oder den oberen Grenzwert des zweiten Konzentrationsbereichs als Anzeigewert auszugeben, wenn ein Ausgangssignal des ersten Gaskonzentrations-Detektionssensors einer Gaskonzentration entspricht, die niedriger als der untere Grenzwert des ersten Konzentrationsbereichs ...

SYSTEM AND METHOD

METHOD AND DEVICE FOR PRODUCING THREE-DIMENSIONAL COMPONENTS BY SELECTIVE SOLIDIFICATION

METHOD FOR MANUFACTURING METAL PRINTED OBJECT

PROCESS FOR MANUFACTURING A TITANIUM NIOBIUM ZIRCONIUM (TNZ) BETA-ALLOY WITH A VERY LOW MODULUS OF ELASTICITY FOR BIOMEDICAL APPLICATIONS AND METHOD FOR PRODUCING SAME BY ADDITIVE MANUFACTURING

FILTER DEVICE FOR FILTRATION OF GASES LOADED WITH PARTICLES

Conjoined steel and titanium via additive manufacture

A process for additive manufacture of an article including conjoined first and second metals, wherein the first metal includes one of steel and titanium and the second metal includes another of the steel and the titanium. The process comprises arranging an interface layer of a third metal on a substrate of the first metal, wherein the third metal is capable of forming an alloy with the first metal and capable of forming an alloy with the second metal. The process further comprises supplying a consumable form of the second metal to a locus of the interface layer and heating the locus of the interface layer in an non-reactive environment. In this process, the heating fuses the consumable form of the second metal to render a fused form of the second metal and joins the fused form of the second metal to the interface layer.

ACTIVE CLIMATE CONTROL IN SLM PROCESSES

ADDITIVE MANUFACTURING OF ARTICLES COMPRISING BERYLLIUM

METHOD OF MANUFACTURING TURBINE AIRFOIL AND TIP COMPONENT THEREOF

AN INSTALLATION FOR ADDITIVE MANUFACTURING BY SLM OR SLS

An AM installation utilising SLM or SLS a chamber of a housing with a protective atmosphere, a support structure in the chamber defines an upper horizontal surface on which a laser source is operable for focusing onto predetermined regions of a build area of the plane of the horizontal surface. The laser beam source is operable so areas of each of successive layers of powder material are sintered or fully molten throughout its layer thickness. A dosing device raises successive quantities of powder to the level of the upper surface to enable a re-coater to form the layers. A separable build device unit defines build chamber opening at the upper surface, and includes a lift table and an electric drive by which the lift table is stepwise vertically adjustable so a progressively built component is lowerable into the build chamber.

Creating a breakaway region

An apparatus is disclosed to create a breakaway junction for 3D printed parts. Powder is spread along a target zone, such as a build bed. A liquid functional agent is selectively dispensed upon the powder to form a 3D object, a supporting part, and the breakaway junction between them.

Method and apparatus for producing an object by means of additive manufacturing

Method for producing an object by means of additive manufacturing, wherein said method comprises the steps of: receiving, in a process chamber, a bath of material, wherein a surface level of said bath of material defines an object working area; solidifying, by a solidifying device, a selective layer-part of said material on said surface level; controlled oxidisation, of waste particles originating from said solidifying of said material, by controlling an oxygen level, such that oxidised waste particles are obtained and ignition of said waste particles is avoided. Apparatus for producing an object by means of additive manufacturing.

Vitreous bonded abrasive articles and methods of manufacture thereof

A method of forming a vitreous bond abrasive article is presented that includes receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying a plurality of layers of a vitreous bond abrasive article precursor. The vitreous bond abrasive article precursor includes abrasive particles bonded together by a vitreous bond precursor material and an organic compound. The vitreous bond abrasive article precursor further comprises at least one of: at least one tortuous cooling channel extending at least partially through the vitreous bond abrasive article precursor or at least one arcuate cooling channel extending at least partially through the vitreous bond abrasive article precursor. The method also includes generating, with the manufacturing device by an additive manufacturing process, the vitreous bond abrasive article precursor based on the digital object.

Apparatus and method for manufacturing a three-dimensional object

An apparatus for manufacturing a three-dimensional object by a layer-by-layer solidification of building material at the points corresponding to the cross-section of the object to be manufactured in a respective layer. The apparatus includes a process chamber in which the object is to be built up layer by layer by selectively solidifying layers of a building material in a build area, a gas supply device, and a recirculating air filter device, wherein the apparatus comprises a pressure stabilization device configured to keep the pressure in the process chamber substantially constant.

Three-dimensional monolithic diaphragm tank

A three-dimensional monolithic diaphragm tank including a first portion having a first inner surface, a second portion having a second inner surface, and a deformable diaphragm extending from a peripheral junction with the first inner surface and the second inner surface. The first inner surface and the diaphragm defining a first chamber. The second inner surface and the diaphragm defining a second chamber. The first portion having an outlet port in fluid communication with the first chamber, and the second portion having an inlet port in fluid communication with the second chamber. The peripheral junction of the diaphragm and the first inner surface including an integral inner fillet having an inner radius.

ADDITIVELY MANUFACTURED ARTICLE AND METHOD FOR MANUFACTURING SAME

Printing method for producing thermomagnetic form bodies for heat exchangers

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.

Apparatus and method for producing a three-dimensional object

The invention concerns an apparatus for producing a three-dimensional object layer by layer using a powdery material which can be solidified by irradiating it with an energy beam, said apparatus comprising an electron gun for generating said energy beam and a working area onto which the powdery material is distributed and over which the energy beam sweeps during irradiation. The invention is characterized in that the apparatus is provided with a system for feeding controlled amounts of a reactive gas into the apparatus such as to contact the reactive gas with material positioned on the working area, said reactive gas being capable of, at least when having been exposed to the energy beam, reacting chemically and/or physically with the material positioned on the working area. The invention also concerns a method for operating an apparatus of the above type.

Method of manufacturing an airfoil

Disclosed is a method of manufacturing an airfoil. The method includes establishing an Argon (Ar)-free environment, providing a bed within the Argon free environment, providing a set of data instructions for manufacturing the airfoil, and providing a powdered Nickel (Ni)-based alloy on the bed. In one example, the powdered Nickel (Ni)-based alloy consists essentially of about 4.8 wt. % Iron (Fe), about 21 wt. % Chromium (Cr), about 8.6 wt. % Molybdenum (Mo), about 0.07 wt. % Titanium (Ti), about 0.40% Aluminum (Al), about 5.01 wt. % Niobium (Nb), about 0.03 wt. % Carbon (C), about 0.14 wt. % Silicon (Si), and a balance Nickel (Ni). The method further includes fusing the powdered Nickel (Ni)-based alloy with an electron beam with reference to the data instructions to form the airfoil.

Process for melting/sintering powder particles for the layer-by-layer production of three-dimensional objects

A process for melting/sintering powder particles for layer-by-layer production of three-dimensional objects wherein a layer of powder particles is irradiated by a nonlinear path of an electromagnetic radiation is provided. Also provided are an apparatus to conduct the process and three dimensional objects obtained by the process.

Three-dimensional printing

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.

Powder recirculating additive manufacturing apparatus and method

A method of making a part by an additive manufacturing process includes the steps of: (a) supporting a build platform on a support surface; (b) traversing a powder dispenser positioned above the support surface across the build platform, while dispensing powder from the powder dispenser, so as to deposit the powder over the build platform; (c) traversing the build platform with a scraper to scrape the deposited powder, so as to form a layer increment of powder; (d) using a directed energy source to fuse the layer increment of powder in a pattern corresponding to a cross-sectional layer of the part; and (e) repeating in a cycle steps (b) through (d) to build up the part in a layer-by-layer fashion.

Three-dimensional printing and three-dimensional printers

The present disclosure provides three-dimensional (3D) printing processes, apparatuses, software, and systems for the production of at least one desired 3D object. The 3D printer system (e.g., comprising a processing chamber, build module, or an unpacking station) described herein may retain a desired (e.g., inert) atmosphere around the material bed and/or 3D object at multiple 3D printing stages. The 3D printer described herein comprises one or more build modules that may have a controller separate from the controller of the processing chamber. The 3D printer described herein comprises a platform that may be automatically constructed. The invention(s) described herein may allow the 3D printing process to occur for a long time without operator intervention and/or down time.

Additive manufacturing material for powder lamination manufacturing

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.

Optical assembly for additive manufacturing

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.

Recoaters with gas flow management

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.

Apparatus and method for producing work pieces having a tailored microstructure

An apparatus ( 10 ) for producing three-dimensional work pieces comprises a carrier ( 16 ), a powder application device ( 14 ) for applying a raw material powder onto the carrier ( 16 ), an irradiation device ( 18 ) selectively irradiating electromagnetic or particle radiation onto the raw material powder applied onto the carrier ( 16 ), and a control unit ( 38 ) which is adapted to control the operation of the powder application device ( 14 ) and the irradiation device ( 18 ) in dependence of the crystallization behavior of the raw material powder, in order to tailor the microstructure of a work piece made of said raw material powder by a additive layer construction method.

Material feeder of additive manufacturing apparatus, additive manufacturing apparatus, and additive manufacturing method

According to one embodiment, a material feeder includes a feeding unit. The feeding unit includes a container that is containable of a powdery material and a first wall that is provided with a plurality of first openings communicated with the container and at least partially covers a region to which the material is fed, the feeding unit feeding the material in the container from the first openings to the region to form a layer of the material.

Sweep gas systems

A sweep gas system for an additive manufacturing machine can include a gas manifold having an outlet configured to effuse gas into a build area of the additive manufacturing machine. The gas manifold can be moveable across at least a portion of the build area. The sweep gas system can include a controller configured to control a position of the gas manifold.

Three-dimensional monolithic diaphragm tank

A three-dimensional monolithic diaphragm tank including a first portion having a first inner surface, a second portion having a second inner surface, and a deformable diaphragm extending from a peripheral junction with the first inner surface and the second inner surface. The first inner surface and the diaphragm defining a first chamber. The second inner surface and the diaphragm defining a second chamber. The first portion having an outlet port in fluid communication with the first chamber, and the second portion having an inlet port in fluid communication with the second chamber. The peripheral junction of the diaphragm and the first inner surface including an integral inner fillet having an inner radius.

Method for managing a powder in an additive manufacturing facility comprising a plurality of machines

An additive-manufacturing facility and a method for managing a powder transported to and from additive-manufacturing machines of the facility are provided. According to the method, a volume of feedstock powder is stored, and the machines are automatically fed with powder from the volume of feedstock powder. For each machine, the powder fed to the machine undergoes at least one layering operation during an additive-manufacturing cycle, and excess powder in the layering operation is moved away and conveyed from the machine to the volume of feedstock powder. For each machine, recovered powder, which is derived from cleaning rough components produced by the machine, is reintroduced into the volume of feedstock powder. A same collection circuit is used to convey the excess powder and the recovered powder to the volume of feedstock powder.

3-dimensional object-forming apparatus

A 3dimensional object-forming apparatus is provided which may avoid lowering of irradiation efficiency of laser light due to fumes and so forth while avoiding lowering of quality of the formed object. A shroud 20 includes an inside partition wall portion 21 that demarcates an inside space S1 which extends from one end opening 202 to another end opening 206, and an outside partition wall portion 22 that opens in the other end opening 206 of a shroud 20 on an outside of the inside space S1 and demarcates, together with the inside partition wall portion 21, an outside space S2 which closes in a position closer to the one end opening 202 than the other end opening 206 of the shroud. A ventilation area of the inside space S1 in the other end opening 206 of the shroud 20 is larger than the ventilation area of the inside space S1 in an upstream portion closer to the one end opening 202 than the other end opening 206.

Single Piece Vehicle Control Surface and Associated Systems and Methods of Manufacture

A method of manufacturing a vehicle control surface includes generating, using an electronic controller, a three-dimensional plan for the vehicle control surface. The three-dimensional plan includes, at least, non-vehicular support structure dimensions, for a non-vehicular support structure, and skin dimensions for a skin. The method further includes configuring the dimensions of the non-vehicular support structure based on build environment characteristics associated with an additive manufacturing process of the control surface. The additive manufacturing process is based on the three-dimensional plan. The method further includes fabricating the vehicle control surface, using the additive manufacturing process, based on the three-dimensional plan.

Apparatus for additively manufacturing three-dimensional objects

Apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a powdered build material (3) which can be consolidated by means of an energy beam (4), the apparatus (1) comprising a process chamber (8) and a stream generating device (9) configured to generate a gaseous fluid stream at least partly streaming through the process chamber (8), the gaseous fluid stream being capable of being charged with non-consolidated particulate build material, particularly smoke or smoke residues generated during operation of the apparatus (1), while streaming through the process chamber (8), wherein the stream generating (9) device comprises at least two separate stream generating units (13, 14) each being configured to generate a respective gaseous fluid stream.

Apparatus for manufacturing three-dimensional objects

Apparatus ( 1 ) for additively manufacturing of three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material ( 2 ) which can be consolidated by means of an energy beam, with a process chamber ( 3 ) comprising at least a first and a second region ( 4, 5 ), wherein in the first region ( 4 ) build material ( 2 ) is applied and irradiated on a build plane ( 6 ), wherein a stream generating unit is provided that is configured to generate a stream of process gas ( 10 ) in the process chamber ( 3 ) separating the first region ( 4 ) from the second region ( 5 ).

Blade changers for additive manufacturing systems and methods of interchanging re-coater blades in additive manufacturing systems

A blade changer includes a housing with a port, a magazine supported within the housing, and a manipulator. The manipulator is operably associated with the magazine and has a reach extending beyond the port to interchange re-coater blades between the magazine and an additive manufacturing system coupled to the port. Additive manufacturing systems and methods of interchanging a deployed re-coater blade with a staged re-coater blade are also described.

Systems for quality monitoring of additive manufacturing

A system for quality monitoring of additive manufacturing includes an acoustic emission (AE) sensor configured to be attached to an additive manufacturing substrate and to output a sensor signal indicative of acoustic vibrations received at the AE sensor and an AE module. The AE module is configured to receive the sensor signal from the AE sensor and process the sensor signal to determine at least one characteristic of an additive manufacturing process and/or an additively manufactured article.

Methods and devices for 3d printing

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.

Nozzle for additive manufacturing machine

A nozzle has a main body having an input side and an output side, a central region and two opposing end regions. A plurality of linearly arranged apertures extend from the input side to the output side, and each of the apertures has a respective opening. At least one opening in the central region is smaller than at least one opening in the end regions.

Additive manufacturing apparatus and method for manufacturing three-dimensionally shaped object

An additive manufacturing apparatus includes a powder layer forming portion, an energy beam source, and a contact detection sensor including a plate-like probe. The powder layer forming portion is configured to form a powder layer in a predetermined region. The energy beam source is configured to radiate an energy beam to the powder layer formed by the powder layer forming portion to fuse or sinter the powder layer so that a solidified layer is formed. Presence or absence of a projection portion on a surface of the solidified layer is detected by using the contact detection sensor.

Additive manufacturing of a component made from a metal matrix composite

The embodiments relate to a method for additive manufacturing of a component made from a metal matrix composite for a vehicle. In a step of the method, a plurality of elongated filaments is provided. In another step, metallic powder is provided. In a further step, the metal matrix composite component is additively manufactured by melting the metallic powder.

THREE-DIMENSIONAL DEPOSITION DEVICE AND THREE-DIMENSIONAL DEPOSITION METHOD

A three-dimensional deposition device includes a deposition head provided with a powder jetting port and a light beam irradiation port to form a deposited body by the powder being melted and solidified; a shape measurement unit that measures a shape of the deposited body; a deposited body cooling unit that jets cooling gas to the deposited body to cool the deposited body; and a control unit. The control unit causes the shape measurement unit to measure the shape of the deposited body, determines whether to cool the deposited body based on a result of measuring the shape of the deposited body, and causes the deposited body cooling unit to jet the cooling gas to the deposited body to cool the deposited body in a case in which the cooling determination unit determines to cool the deposited body. 1. A three-dimensional deposition device comprising:a deposition head provided with a powder jetting port from which powder is jetted and a light beam irradiation port from which a light beam is emitted to form a deposited body by the powder being melted and solidified;a shape measurement unit that measures a shape of the deposited body;a deposited body cooling unit that jets cooling gas to the deposited body to cool the deposited body; anda control unit, wherein a measurement control unit that causes the shape measurement unit to measure the shape of the deposited body,', 'a cooling determination unit that determines whether to cool the deposited body based on a result of measuring the shape of the deposited body from the shape measurement unit, and', 'a cooling control unit that causes the deposited body cooling unit to jet the cooling gas to the deposited body to cool the deposited body in a case in which the cooling determination unit determines to cool the deposited body., 'the control unit includes'}2. The three-dimensional deposition device according to claim 1 , wherein the shape measurement unit measures a height of the deposited body as the shape of the deposited body ...

Three-dimensional printing and three-dimensional printers

The present disclosure provides three-dimensional (3D) printing processes, apparatuses, software, and systems for the production of at least one desired 3D object. The 3D printer system (e.g., comprising a processing chamber, build module, or an unpacking station) described herein may retain a desired (e.g., inert) atmosphere around the material bed and/or 3D object at multiple 3D printing stages. The 3D printer described herein comprises one or more build modules that may have a controller separate from the controller of the processing chamber. The 3D printer described herein comprises a platform that may be automatically constructed. The invention(s) described herein may allow the 3D printing process to occur for a long time without operator intervention and/or down time.

Additive manufacturing systems, additive manufactured components including portions having distinct porosities, and methods of forming same

Additive manufactured components including portions having distinct porosities, and systems/methods of forming components including portions having distinct porosities are disclosed. The components may include a first portion having a first porosity. The first portion may include a first exposure pattern of a plurality of scan vectors extending over the first portion. The first exposure pattern may define the first porosity of the first portion. The component may also include a second portion positioned adjacent the first portion. The second portion may include a second porosity greater than the first porosity of the first portion. Additionally, the second portion may include a second exposure pattern of a plurality of scan vectors extending over the second portion. The second exposure pattern may be distinct from the first exposure pattern of the first portion, and may define the second porosity of the second portion.

Additive layer manufacturing method and apparatus

A method and apparatus for manufacturing a three-dimensional object by additive layer manufacturing. The method includes providing layers of material in powder form on a support inside a chamber, and irradiating each layer with a beam before providing the subsequent layer. A gas atmosphere is maintained inside the chamber during the irradiation steps. The pressure and/or the composition of the gas atmosphere is controlled where at least two different gas atmospheres having different predetermined pressures and/or compositions are inside the chamber during irradiation of the layers, the beam spot size on the layers is controlled such that at least two different beam spot sizes are utilized during irradiation, and/or the temperature of the gas atmosphere inside the chamber and/or of the layer being irradiated is controlled such that at least two different temperatures of the gas atmosphere and/or of the layer being irradiated are present during irradiation of the layers.

PROCESSING POWDER SUITABLE FOR LASER MELTING WITH A CENTRAL INERT GAS DISTRIBUTOR AND WITH OXYGEN MONITORING

The disclosure provides systems and methods for processing powder suitable for laser melting, with at least one component that is or comes into contact with the powder and to which an inert gas is fed. The systems include a central inert gas distributor, which can be connected or is connected to an inert gas source and to which the at least one component is connected by way of an activatable valve, an oxygen sensor in the at least one component, and a controller, which activates the valve on the basis of measurement data of the oxygen sensor. As an alternative or in addition to the central inert gas distributor, the system can have a data processing unit, which records and evaluates the measurement data of the oxygen sensor. 1. A system for processing powder suitable for laser melting , the system comprising:one or more components that come into contact with the powder and to which an inert gas is fed;a central inert gas distributor, which can be connected to, or is connected to, an inert gas source;an activatable valve arranged between the central inert gas distributor and the one or more components to control a flow of inert gas from the central inert gas distributor to the one or more components;an oxygen sensor arranged in or on the one or more components and configured to measure oxygen within the component and to provide oxygen measurement data; anda controller arranged to receive the oxygen measurement data and configured to activate the activatable valve according to the oxygen measurement data.2. The system of claim 1 , wherein the activatable valve is connected to the central inert gas distributor via one or more gas transfer conduits.3. The system of claim 1 , further comprising a central inert gas processing system connected to the central inert gas distributor.4. The system of claim 3 , further comprising a central sieving station for cleaning the powder.5. The system of claim 4 , wherein one or more of the central inert gas distributor claim 4 , the ...

Three dimensional printer

A lamination molding apparatus which can remove the non-sintered material powder after completion of lamination molding easily and with less time after completion of laminating/molding, is provided. According to embodiments of the present invention, a lamination molding apparatus to conduct lamination molding using a material powder, including: a chamber filled with an inert gas having a predetermined concentration; a molding table provided in the chamber, the molding table being capable of moving vertically; a powder retaining wall surrounding the molding table so as to retain the material powder supplied on the molding table; and a powder discharging section provided on or below the powder retaining wall, the powder discharging section being capable of discharging the material powder, is provided.

Debinder for 3d objects

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.

Devices and methods for three-dimensional printing

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.

Production of substantially spherical metal powders

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.

Apparatus for manufacturing three-dimensional shaped object

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.

Grain boundary engineering for additive manufacturing

In one embodiment, a method of manufacturing a metal part using a laser or electron beam during a powder bed additive manufacturing process includes melting each of a number of layers of metal powder of the metal part with an effective amount of energy using the laser or electron beam to form the metal part such that at least one or more portions of the metal part have a critical amount of residual strain. The method also includes performing a heat treatment on the metal part that transforms the residual strain into substantially distributed coincidence site lattice (CSL) grain boundaries, low angle grain boundaries, or both in the metal part.

Additive manufacturing under generated force

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.

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

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.

High capacity apparatus for layered manufacturing from powdered materials

A three dimensional printing system includes a build module, a powder storage module, a powder transport conduit, a vertical powder transport module, and a powder layering apparatus. The build module has a lateral side. The powder storage module is located at least partially below the build module. The powder storage module has a lateral side and defines an internal volume for holding powder. The powder transport conduit transports the powder to a lateral location that is laterally offset from the lateral side of the powder storage module. The vertical powder transport module is laterally offset from the lateral sides of the build module and the powder storage module and includes a lower end for receiving powder from the lateral location and an upper end having a laterally extending powder outlet. The powder layering apparatus receives the powder from the laterally extending powder outlet.

Rolling Type 3D Printing Device and Operation Method Thereof

A rolling type 3D printing device for recycling powders and an operation method thereof are provided. The rolling type 3D printing device has a rolling mechanism, at least one optical module, and a powder conveying module. The rolling mechanism holds a workpiece and receives powders. Cylindrical or cone workpieces can be laminated by the rolling type 3D printing device through the design of the rolling mechanism.

Three dimensional printer

A lamination molding apparatus capable of supplying a material powder steadily to a recoater head, is provided. A lamination molding apparatus including a chamber covering a desired molding region and being filled with an inert gas having a desired concentration; a recoater head moving in the chamber to supply a material powder on the molding region to form a material powder layer; and a material supplying unit to supply the material powder to the recoater head; wherein the recoater head includes a material holding section to hold the material powder; and a material discharging opening to discharge the material powder in the material holding section.

Method and device for manufacturing titanium objects

A method and reactor of manufacturing an object by solid freeform fabrication, especially an object made of titanium or titanium alloys. An objective is to provide a method for rapid layered manufacture of objects in titanium or titanium alloys. A further objective is to provide a deposition chamber which allows prosecution of the method according to the invention.

Apparatus for laser materials processing

An apparatus for laser materials processing including a laser ( 4 ) for generating a laser beam and a laser head ( 5 ) which is movable along at least one spatial direction and is connected to the laser via a light guide, and which emits a laser beam ( 7 ) capable of processing a material. The present invention also relates to an apparatus for selective laser melting or selective laser sintering having an apparatus for laser materials processing.

Processing method and processing system

The processing system is provided with: a liquid supply device which can supply a liquid; a liquid processing device which processes a liquid supplied from the liquid supply device such that a non-liquid-immersion state is generated locally in a partial area including a target portion on a predetermined surface; a beam irradiation section which emits beams toward the target portion; and a moving apparatus which moves the predetermined surface. The beams are irradiated on the target portion to apply a predetermined processing to the target portion, in a state in which the target portion is in the non-liquid-immersion state.

Operation of three-dimensional printer components

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.

Device and method for the manufacture or repair of a three-dimensional object

The invention relates to a device ( 10 ) for the manufacture or repair of a three-dimensional object, comprising at least one construction chamber ( 12 ) for a successive solidification of at least one solidifiable material layer by the layer in predefined regions for the layer-by-layer buildup of the three-dimensional object or for the layer-by-layer repair of individual regions of the three-dimensional object within the construction chamber ( 12 ), and at least one inlet nozzle ( 22, 26 ) and at least one suction nozzle ( 24 ) for a process gas, wherein the inlet nozzle ( 22, 26 ) and the suction nozzle ( 24 ) are arranged in such a way that a gas flow ( 30 ) that passes at least partially over a construction platform ( 14 ) formed in a construction chamber ( 12 ) is created.

Methods and Systems for Coherent Imaging and Feedback Control for Modification of Materials

Methods and systems are provided for using optical interferometry in the context of material modification processes such as surgical laser, sintering, and welding applications. An imaging optical source that produces imaging light. A feedback controller controls at least one processing parameter of the material modification process based on an interferometry output generated using the imaging light. A method of processing interferograms is provided based on homodyne filtering. A method of generating a record of a material modification process using an interferometry output is provided.

Part Manipulation Using Printed Manipulation Points

A manipulator device such as a robot arm that is capable of increasing manufacturing throughput for additively manufactured parts, and allows for the manipulation of parts that would be difficult or impossible for a human to move is described. The manipulator can grasp various permanent or temporary additively manufactured manipulation points on a part to enable repositioning or maneuvering of the part.

METHOD FOR PRODUCING LOW-PRESSURE TURBINE BLADES FROM TiAl

The invention relates to a method for producing a low-pressure turbine blade from a TiAl material by means of a selective laser melting process, wherein during production in the selective laser melting process the already partially manufactured low-pressure turbine blade is preheated by inductive heating, and wherein the selective laser melting process is carried out under protective gas, the protective gas atmosphere containing contaminants of oxygen, nitrogen, and water vapor in each case of less than or equal to 10 ppm.

Light recycling for additive manufacturing optimization

A method and an apparatus pertaining to recycling and reuse of unwanted light in additive manufacturing can multiplex multiple beams of light including at least one or more beams of light from one or more light sources. The multiple beams of light may be reshaped and blended to provide a first beam of light. A spatial polarization pattern may be applied on the first beam of light to provide a second beam of light. Polarization states of the second beam of light may be split to reflect a third beam of light, which may be reshaped into a fourth beam of light. The fourth beam of light may be introduced as one of the multiple beams of light to result in a fifth beam of light.

Laser additive manufacturing control system and method

A computational method for controlling a powder particle uptake by a shielding gas in a laser additive manufacturing system. The computational method includes receiving a gas fluid domain, a powder bed domain, and an inlet shielding gas flow velocity of the laser additive manufacturing system. The method further includes determining a maximum gas flow velocity within the gas fluid domain based on the inlet shielding gas flow velocity and the gas fluid domain. The method also includes determining a threshold uptake flow velocity within the gas fluid domain based on the inlet shielding gas flow velocity and the powder bed domain. The method also includes controlling the powder particle uptake of the shielding gas in the laser additive manufacturing system in response to the maximum gas flow velocity and the threshold uptake flow velocity.

Adept three-dimensional printing

The present disclosure provides three-dimensional (3D) printing methods, apparatuses, systems, and non-transitory computer-readable medium. The disclosure delineates real time manipulation of three-dimensional printing to reduce deformation. The present disclosure further provides 3D object formed using the methods, apparatuses, and systems.

Method of using additive materials for production of fluid flow channels

An additive manufacturing process is described that is particularly useful in the production of compact heat exchangers, chemical reactors, static chemical mixers and recuperators.

Method for the generative production of a three-dimensional component

A method for the generative production of a three-dimensional component in a processing chamber, wherein the steps of providing a metal starting material in the processing chamber and melting the starting material by inputting energy are repeated multiple times, and wherein a process gas is provided in the processing chamber is disclosed. The method provides for the following steps wherein the hydrogen content of the process gases or of a sample of the process gas is determined; the oxygen content of the process gas or of a sample of the process gas is determined by means of an oxygen sensor and/or the dewpoint of the process gases or of a sample of the process gas is determined; and the value determined in step 2 for the oxygen content and/or the dewpoint is/are corrected with the aid of the value for the hydrogen content determined in step 1.

Continuous Linear Production in a Selective Laser Sintering System

A method and apparatus for forming objects. Layers of precursor material may be placed on top of each other. The layers of precursor material may be selectively cured as the layers of precursor material are placed on top of each other to form an object and a frame associated with the object.

Additive manufactured object with passage having varying cross-sectional shape

A passage incorporated into an additively manufactured object, the object and a related method are disclosed. The object has an additive manufacture build direction. The passage includes: a first portion aligned along an axis oriented less than approximately 45° from the build direction; and a second portion aligned along an axis oriented greater than approximately 45° from the build direction, the second portion including at least one self-supporting top surface portion including at least one edge aligned no greater than approximately 45° from the build direction. The passage having varying cross-sectional shape along a non-linear length accommodates additive manufacture regardless of build direction.

Hardfacing alloy and hardfacing member

A hardfacing alloy satisfies the following condition when the hardfacing alloy as a whole is 100 mass % (also simply referred to as “%,” hereinafter), Ni: 10-25%, Si: 1-3%, Fe: 3-18%, the total of one or more elements of Mo, W, and Nb: 6.5-20%, and the balance: Cu and impurities. In particular, it preferably satisfies Fe+2Mo≥22.6(%), Mo equivalent/Fe≥1.17, and Mo equivalent=Mo+0.522W+1.033Nb. In a hardfacing part composed of the hardfacing alloy, coarse hard particles are formed to ensure the wear resistance, and a soft phase present in the hard particles ensures the machinability. This may be understood as a raw material powder for hardfacing treatment and may also be understood as a hardfacing member in which a hardfacing part is formed on a base material using the raw material powder.

Three-dimensional deposition device and three-dimensional deposition method

A three-dimensional deposition device and a three-dimensional deposition method used to manufacture a three-dimensional object with high accuracy are provided. A three-dimensional deposition device for forming a three-dimensional shape by depositing a formed layer on a base unit, includes: a powder supply unit which supplies a powder material by injecting the powder material toward the base unit; a light irradiation unit which irradiates the powder material feeding from the powder supply unit toward the base unit with a light beam so that the powder material is melted and the melted powder material is solidified on the base unit to thereby form the formed layer; and a control device which controls operations of the powder supply unit and the light irradiation unit.

ROTATIONAL ADDITIVE MANUFACTURING SYSTEMS AND METHODS

Systems and methods for rotational additive manufacturing are disclosed. An apparatus in accordance with an aspect of the present disclosure comprises a build floor, a depositor system configured to deposit a layer of powder onto the build floor, a motor system causing a rotational motion between the depositor system and the build floor, wherein the depositor system deposits the layer of powder during the rotational motion, a receptacle wall configured to contain the powder on the build floor, an energy beam source configured to apply an energy beam in an active area of the layer of powder to selectively fuse a portion of the powder in the active area to form a portion of a build piece and a gas flow system configured to provide a gas flow across the active area while the energy beam selectively fuses the portion of the layer of powder in the active area. 122-. (canceled)23. An apparatus , comprising:a build floor;a depositor system configured to deposit a layer of powder onto the build floor;a motor system configured to cause a rotational motion between the depositor system and the build floor, wherein the depositor system deposits the layer of powder during the rotational motion;a receptacle wall configured to contain the powder on the build floor; andan energy beam source configured to apply an energy beam in an active area of the layer of powder to selectively fuse a portion of the powder in the active area to form a portion of a build piece,wherein the motor system is further configured to vary a speed of the rotational motion based on information of a build including the build piece.24. The apparatus of claim 23 , wherein the information of the build includes a geometric feature density claim 23 , and the motor is configured to vary the speed by increasing the speed when the geometric feature density is lower and increasing the speed when the geometric feature density is higher.25. The apparatus of claim 23 , wherein the motor system causes the rotational ...

Rotational additive manufacturing systems and methods

Systems and methods for rotational additive manufacturing are disclosed. An apparatus in accordance with an aspect of the present disclosure comprises a build floor, a depositor system configured to deposit a layer of powder onto the build floor, a motor system causing a rotational motion between the depositor system and the build floor, wherein the depositor system deposits the layer of powder during the rotational motion, a receptacle wall configured to contain the powder on the build floor, an energy beam source configured to apply an energy beam in an active area of the layer of powder to selectively fuse a portion of the powder in the active area to form a portion of a build piece and a gas flow system configured to provide a gas flow across the active area while the energy beam selectively fuses the portion of the layer of powder in the active area.

Accurate three-dimensional printing

The present disclosure provides three-dimensional (3D) printing methods, apparatuses, and systems using, inter alia, a controller that regulates formation of at least one 3D object (e.g., in real time during the 3D printing); and a non-transitory computer-readable medium facilitating the same. For example, a controller that regulates a deformation of at least a portion of the 3D object. The control may be in situ control. The control may be real-time control during the 3D printing process. For example, the control may be during a physical-attribute pulse. The present disclosure provides various methods, apparatuses, systems and software for estimating the fundamental length scale of a melt pool, and for various tools that increase the accuracy of the 3D printing.

Additively manufactured parts with debinding acceleration

To build a part with a deposition-based additive manufacturing system with a binder matrix and a sinterable powder, walls of a part, sintering supports, or interconnecting platform are formed with access, distribution or routing channels therein to permit debinding fluid to pass through and/or enter the interior of the same.

Optics, detectors, and three-dimensional printing

The present disclosure provides three-dimensional (3D) printing methods, apparatuses, software, and systems, some of which utilize one or more detectors that may be used to detect characteristics of the 3D object, e.g., in real-time during its formation. The present disclosure provides methods, apparatuses, software, and systems for generating different cross sections of one or more energy beams used for 3D printing of the 3D object.

Optics, detectors, and three-dimensional printing

The present disclosure provides three-dimensional (3D) printing methods, apparatuses, software, and systems, some of which utilize one or more detectors that may be used to detect characteristics of the 3D object, e.g., in real-time during its formation. The present disclosure provides methods, apparatuses, software, and systems for generating different cross sections of one or more energy beams used for 3D printing of the 3D object.

Melt Pool Monitoring System and Method for Detecting Errors in a Multi-Laser Additive Manufacturing Process

A system and method of monitoring a powder-bed additive manufacturing process using a plurality of energy sources is provided. A layer of additive powder is deposited on a powder bed and is fused using a first energy source, a second energy source, or any other suitable number of energy sources. The electromagnetic energy emissions at a first melt pool are monitored by a melt pool monitoring system and recorded as raw emission signals. The melt pool monitoring system may also monitor emissions from the powder bed using off-axis sensors or from a second melt pool using on-axis sensors, and these emissions may be used to modify the raw emission signals to generate compensated emission signals. The compensated emission signals are analyzed to identify outlier emissions and an alert may be provided or a process adjustment may be made when outlier emissions exceed a predetermined signal threshold.

Binder distribution in additively manufactured parts

Techniques and compositions are disclosed for feedstocks with powder/binder systems for three-dimensional printing, such as fused filament fabrication. For example, a plurality of feedstocks may be combined to form a three-dimensional object having a spatial gradient of a first primary binder and a second primary binder. The spatial gradient of the first primary binder and the second primary binder along the three-dimensional object may form the three-dimensional object with an advantageous combination of adequate structural support and a rapid overall rate of debinding the first primary binder and the second primary binder from the three-dimensional object as the three-dimensional object is processed into a final part. Accordingly, the spatial gradient of the first primary binder and the second primary binder may be useful for rapid three-dimensional manufacturing of high quality parts.

Metal-connected particle articles

Apparatus and methods for making metal-connected particle articles. A metal containing fluid is selectively applied to a layer of particles. The metal in the fluid is used to form metal connections between particles, The metal connections are formed at temperatures below the sintering temperature of the particles in the layer of particles.

Device with hatch for additive manufacturing

A device for additive manufacturing, in particular powder-bed-based additive manufacturing, having a build-chamber wall, which defines a build chamber and is designed to separate the build chamber from an outside area. The build-chamber wall has a hatch, which is designed for transferring at least partially a component that is to be built up in layers from the build chamber through the hatch into an outside area during an additive manufacturing process, and the component can be built up along at least one transferring direction beyond a dimension of the build chamber. A corresponding method includes the provision of a first portion of the component to be manufactured in layers in the build chamber, and the building up in layers of a second portion, adjoining the first portion, wherein an already built-up sub-portion of the component is transferred in layers from the build chamber through the hatch into the outside area.

Irradiation device for an apparatus for additively manufacturing three-dimensional objects

Irradiation device ( 5 ) for an apparatus ( 1 ) for additively manufacturing three-dimensional objects ( 2 ) by means of successive layerwise selective irradiation and consolidation of layers of a build material ( 3 ) which can be consolidated by means of an energy source, which Irradiation device ( 5 ) comprises at least one irradiation unit ( 6 - 8 ), preferably an optical unit, arranged in a housing ( 9 ) of the Irradiation device ( 5 ), wherein a stream generating device ( 10 ) is provided that is adapted to guide a gas stream ( 11 ) that is adapted to be charged with residues present inside the housing ( 9 ) through the housing ( 9 ) of the Irradiation device ( 5 ) along a streaming path in which the gas stream ( 11 ) at least partially streams alongside or through the at least one irradiation unit ( 6 - 8 ) for removing residues from the housing ( 9 ).

Dynamic layer selection in additive manufacturing using sensor feedback

The present disclosure relates to methods and systems for improving layer selection in additive manufacturing. In particular, the present disclosure relates to methods and systems for improving layer selection in additive manufacturing using sensor feedback. In some examples, the sensor may be a distance sensor, and design layers may be selected dynamically based on determined part layer heights after layer deposition.

Three dimensional sub-mm wavelength sub-thz frequency antennas on flexible and uv-curable dielectric using printed electronic metal traces

Novel methods for micro-additive manufacturing three dimensional sub-millimeter components are disclosed herein. The methods can include dispensing a dielectric at positions on a substrate so as to provide dielectric structures having an aspect ratio of up to 1:20. The methods can also include in-situ curing of the dielectric structure upon dispensing of the dielectric wherein the dispensing and curing steps provide for three dimensional configurations. Direct printing a metal nanoparticle solution on the dielectric to create conductive traces and thereafter sintering the printed nanoparticle solution so as to cure the conductive traces enables three dimensional conductive (antenna) elements having a length and width scale of down to 1 μm.

Method of manufacturing a magnetically graded material

A method of manufacturing a magnetically graded material, including depositing a steel filler material to a substrate, and applying a directed energy source to first and second regions of the filler material to thereby join the filler material to form a joined material. The energy source is directed to the first region while the first region is provided with an inert shield gas such that the material of the first regions includes a magnetic phase, and the energy source is directed to the second region while the second region is provided with a nitrogen containing shield gas to thereby impart an non-magnetic phase to the joined material.

Additive manufacturing method using tilted scanners

Additive manufacturing method includes providing a number of scanners with at least partially overlapping fields of view. The scanners are positioned such that respective optical axes thereof are at an angle relative to a normal part bed. The method includes positioning the fields of view such that a cumulative field of view is substantially equal to a surface area of a part bed. A layer of materials is applied to the part bed, and each scanner directs a beam from a laser emitter to the part bed to selectively fuse the material to produce a layer of a three-dimensional part.

Laser Additive Manufacturing Apparatus and Laser Additive Manufacturing Method

A laser additive manufacturing apparatus and a method thereof are provided. The apparatus includes an irradiation unit that irradiates an irradiation region with a laser beam having a light intensity distribution converted by a diffractive optical element, a head having a material supplying unit for supplying powder material to the irradiation region, and a movement mechanism which relatively moves the head and a workpiece. In the irradiation region, irradiation light forms a substantially circular spot having a light intensity distribution in which light intensity in an outer peripheral portion is higher than light intensity in a central portion, and the central portion has predetermined light intensity, and the material supplying unit supplies the powder material to the substantially circular spot.

Three-dimensional printing

Described herein are compositions, methods, and systems for printing metal three-dimensional objects. In an example, described is a composition for three-dimensional printing comprising: a metal powder build material, wherein the metal powder build material has an average particle size of from about 10 μm to about 250 μm; and a binder fluid comprising: an aqueous liquid vehicle, and latex 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.

ADDITIVE MANUFACTURING PARTICULATE BUILD MATERIAL MANAGEMENT STATION

An additive manufacturing particulate build material management station (), comprising: a material management station body; a particulate build material supply conduit () with a particulate build material supply connector () to releasably connect to a particulate build material supply container () to couple flow of a fluid carrying a particulate building material supply from within the supply container () to the material management station body; and a station data processor () to read data from a data memory chip of the supply container () corresponding with a quantity of particulate build material associated with the supply container (), and to control the withdrawal of particulate build material from the supply container () based upon the quantity of particulate build material associated with the supply container (). 1. An additive manufacturing particulate build material management station , comprising:a material management station body;a particulate build material supply conduit with a particulate build material supply connector to releasably connect to a particulate build material supply container to couple flow of a fluid carrying a particulate building material supply from within the supply container to the material management station body; anda station data processor to read data from a data memory chip of the supply container corresponding with a quantity of particulate build material associated with the supply container, and to control the withdrawal of particulate build material from the supply container based upon the quantity of particulate build material associated with the supply container.2. A management station as claimed in claim 1 , comprising a quantity sensor to measure a quantity of particulate build material drawn into the material management station body from the supply container in the flow of fluid.3. A management station as claimed in claim 1 , comprising a quantity sensor to measure the weight of the supply container.4. A management ...

Apparatus for additive manufacturing and method of additive manufacturing

Apparatus for additive manufacturing includes:—a platform adapted to receive a powder bed that is laid thereon;—a laser source adapted to emit a laser beam towards the powder bed;—a first doctor blade and a second doctor blade opposite to the first doctor blade and located at a predetermined distance from said first doctor blade, the doctor blades being adapted to move in the same direction (X), so as to slide along the whole platform and define a work area, into which the laser beam is directed in order to manufacture a product; wherein the powder bed ( 102 ) is laid out by the first doctor blade, and the first doctor blade is provided with an emission opening adapted to produce a blade of a predetermined gas directed towards the powder bed, and the second doctor blade is provided with a suction opening for sucking in the gas when the product is complete, the suction opening being provided with a sensor adapted to measure the turbulence of the gas flow in the work area, so as to maintain, through a control unit, a laminar flow between the emission opening and the suction opening.

Optics in three-dimensional printing

The present disclosure provides various apparatuses, systems, software, and methods for three-dimensional (3D) printing. The disclosure delineates various optical components of the 3D printing system, their usage, and their optional calibration. The disclosure delineates calibration of one or more components of the 3D printer (e.g., the energy beam).

Apparatuses, Systems and Methods for Three-Dimensional Printing

The present disclosure provides three-dimensional (3D) objects, 3D printing processes, as well as methods, apparatuses and systems for the production of a 3D object. Methods, apparatuses and systems of the present disclosure may reduce or eliminate the need for auxiliary supports. The present disclosure provides three dimensional (3D) objects printed utilizing the printing processes, methods, apparatuses and systems described herein.

Method for melt pool monitoring using green's theorem

A method of controlling an additive manufacturing process in which a directed energy source is used to selectively melt material to form a workpiece, forming a melt pool in the process of melting. The method includes: using an imaging apparatus to generate an image of the melt pool comprising an array of individual image elements, the image including a measurement of at least one physical property for each of the individual image elements; from the measurements, mapping a melt pool boundary of the melt pool; applying Green's theorem to the melt pool boundary; and controlling at least one aspect of the additive manufacturing process with reference to the Green's theorem application.

3-d printer with gas exchange mechanism for removing contaminants during re-coating

Techniques for cleaning a print chamber using a gas exchange structure and a re-coater are introduced. The gas exchange structure is coupled to the coater, and the two move in a same direction to benefit from the gas flow. In an embodiment, the gas exchange structure includes a manifold. Further, in an embodiment, a travelling wall may be coupled to a longitudinal axis of the re-coater in order to keep separate the clean chamber from the dirty chamber. The result is that gas contaminants caused largely by the fusion and melting processes are removed from the powder bed and chamber at each cycle, and the resulting 3-D produced component maintains a very high quality for a long period of time.

Additive manufacturing using a mobile build volume

The present disclosure generally relates to additive manufacturing systems and methods on a large-scale format. One aspect involves a build unit that can be moved around in three dimensions by a positioning system, building separate portions of a large object. The build unit has an energy directing device that directs, e.g., laser or e-beam irradiation onto a powder layer. In the case of laser irradiation, the build volume may have a gasflow device that provides laminar gas flow to a laminar flow zone above the layer of powder. This allows for efficient removal of the smoke, condensates, and other impurities produced by irradiating the powder (the “gas plume”) without excessively disturbing the powder layer. The build unit may also have a recoater that allows it to selectively deposit particular quantities of powder in specific locations over a work surface to build large, high quality, high precision objects.

Layerwise heating, linewise heating, plasma heating and multiple feed materials in additive manufacturing

An additive manufacturing system that includes a platen, a feed material delivery system configured to deliver feed material to a location on the platen specified by a computer aided design program and a heat source configured to raise a temperature of the feed material simultaneously across all of the layer or across a region that extends across a width of the platen and scans the region across a length of the platen. The heat source can be an array of heat lamps, or a plasma source.

Additive manufacturing system implementing anchor curing

A system for additively manufacturing a composite structure is disclosed. The system may include a print head configured to discharge a matrix-coated reinforcement, and a support configured to move the print head in multiple dimensions during discharging of the matrix-coated reinforcement. The system may further include at least one cure enhancer located offboard the print head, and a controller in communication with the support and the at least one cure enhancer. The controller may be configured to selectively activate the at least one cure enhancer to expose the matrix-coated reinforcement to a cure energy during discharging of the matrix-coated reinforcement.

Electron Beam 3D Printing Machine

An electron beam 3D printing machine ( 1 ), comprising a chamber ( 2 ) for generating and accelerating an electron beam and an operating chamber ( 3 ) in which a metal powder is melted, with the consequent production of a three-dimensional product. The chamber ( 2 ) for generating and accelerating an electron beam houses means ( 4 ) for generating an electron beam and means ( 6 ) for accelerating the generated electron beam, while the operating chamber ( 3 ) houses at least one platform ( 16 ) for depositing the metal powder, metal powder handling means ( 18 ) and electron beam deflection means ( 15 ). The accelerator means for the generated electron beam comprise a series of resonant cavities fed with an alternating signal.

Method and apparatus for producing three-dimensional work pieces

A method for producing three-dimensional work pieces comprises the steps of supplying gas to a process chamber accommodating a carrier and a powder application device, applying a layer of raw material powder onto the carrier by means of the powder application device, selectively irradiating electromagnetic or particle radiation onto the raw material powder applied onto the carrier by means of an irradiation device, discharging gas containing particulate impurities from the process chamber, and controlling the operation of the irradiation device by means of a control unit such that a radiation beam emitted by at least one radiation source of the irradiation device is guided over the layer of raw material powder applied onto the carrier according to a radiation pattern containing a plurality of scan vectors.

Brake disc and manufacturing method thereof

A brake disc of the present invention is a brake disc that stops the rotation of an axle when a brake pad is pressed on a surface of the brake disc, including a disc main body that is attached to a rotary body integrally rotating with the axle; and a plurality of build-up layers laminated on a surface of the disc main body, in which the build-up layers are laminated on the surface of the disc main body by means of laser metal deposition welding.

Additive manufacturing with nanofunctionalized precursors

Some variations provide a process for additive manufacturing of a nanofunctionalized metal alloy, comprising: providing a nanofunctionalized metal precursor containing metals and grain-refining nanoparticles; exposing a first amount of the nanofunctionalized metal precursor to an energy source for melting the precursor, thereby generating a first melt layer; solidifying the first melt layer, thereby generating a first solid layer; and repeating many times to generate a plurality of solid layers in an additive-manufacturing build direction. The additively manufactured, nanofunctionalized metal alloy has a microstructure with equiaxed grains. Other variations provide an additively manufactured, nanofunctionalized metal alloy comprising metals selected from aluminum, iron, nickel, copper, titanium, magnesium, zinc, silicon, lithium, silver, chromium, manganese, vanadium, bismuth, gallium, or lead; and grain-refining nanoparticles selected from zirconium, tantalum, niobium, titanium, or oxides, nitrides, hydrides, carbides, or borides thereof, wherein the additively manufactured, nanofunctionalized metal alloy has a microstructure with equiaxed grains.

Method and device for generating control data for an additive manufacturing device

A method and a control data generating device ( 54, 54 ′) for generating control data (BSD, PSD) for an additive manufacturing device ( 1 ) are described, wherein build-up material ( 13 ) is built up and selectively solidified. For this purpose, irradiating the build-up material ( 13 ) on a build field ( 8 ) with at least one energy beam (AL) takes place, wherein an impingement surface ( 22 ) of the energy beam (AL) is moved on the build field ( 8 ) in order to melt the build-up material ( 13 ) in a target area (Γ Z ) in and around the impingement surface ( 22 ). For generating the control data (BSD, PSD), optimization criteria (OK) and/or secondary and/or boundary conditions (WB) relating to a local target temperature distribution (TV) in the target area (Γ Z ) of the build-up material ( 13 ) are defined so that melting of the build-up material ( 13 ) is effected as heat conduction welding. Based on this, an optimized intensity profile (IO) of the energy beam (AL) is determined, which is substantially non-rotationally symmetric at the impingement surface ( 22 ) on the build field ( 8 ). Irradiating the build-up material ( 13 ) is carried out with an energy beam (AL) with the determined optimized intensity profile (IO). Furthermore, a method for controlling and a control device ( 50 ) for a device ( 1 ) for additive manufacturing as well as a corresponding device ( 2 ) for additive manufacturing are described.

Powder processing arrangement and method for use in an apparatus for producing three-dimensional work pieces

A powder processing arrangement ( 10 ) for use in an apparatus ( 100 ) for producing three-dimensional work pieces by selectively irradiating a raw material powder with electromagnetic or particle radiation comprises a carrier element ( 16 ) having a build section ( 46 ) adapted to carry a raw material powder layer while being selectively irradiated with electromagnetic or particle radiation and at least one transfer section ( 48 a, 48 b ) adapted to carry the raw material powder prior to being applied to the build section ( 46 ) so as to form the raw material powder layer to be selectively irradiated with electromagnetic or particle radiation. The powder processing arrangement ( 10 ) further comprises a heating device ( 50 ) adapted to pre-heat the raw material powder carried by the transfer section ( 48 a, 48 b ) of the carrier element ( 16 ) prior to being applied to the build section ( 46 ) of the carrier element ( 16 ) so as to form the raw material powder layer to be selectively irradiated with electromagnetic or particle radiation.

Linear powder dispenser that raster scans for additive manufacturing

An additive manufacturing system includes a platen, a dispenser configured to deliver a powder in a linear region that extends across less than all of a width of the platen, a drive system configured to move the dispenser along the first axis and a perpendicular second axis, a controller, and an energy source configured to selectively fuse a layer of powder. The controller is configured to cause the drive system to move the dispenser along the second axis a first time such that the linear region makes a first sweep along the second axis to deposit the powder in a first swath over the platen, thereafter along the first axis, and thereafter along the second axis a second time such that the first linear region makes a second sweep along the second axis to deposit the powder in a parallel second swath over the platen.

DEVICE AND METHOD FOR GENERATIVELY PRODUCING A THREE-DIMENSIONAL OBJECT

A flow device serves for a device () for producing a three-dimensional object () by a layer-wise selective solidification of a building material () at locations corresponding to the cross-section of the object () to be produced in the respective layer by irradiation by means of an energetic radiation (), the device comprising a gas conveying device for generating a gas stream () and a process chamber () with a build area () for building the object (). The process chamber () comprises at least a first gas inlet () for introducing a gas stream into the process chamber (), and a first gas outlet () and a second gas outlet () spaced from the first gas outlet () for discharging a gas stream from the process chamber (). The first gas outlet () is arranged closer to the build area () than the second gas outlet () in a direction perpendicular to the build area (), and the first gas outlet is provided substantially within a first height range of the process chamber () with respect to its extension in a direction perpendicular to the build area () and the second gas outlet is provided substantially within a second height range of the process chamber () with respect to its extension in a direction perpendicular to the build area (), wherein the first height range of the process chamber corresponds to a lower third of a distance of the build area () from a process chamber ceiling () and the second height range of the process chamber () corresponds to the upper four fifths of the distance of the build area () from the process chamber ceiling (). 1. A flow device for a device for producing a three-dimensional object by a layer-wise selective solidification of a building material at locations corresponding to the cross-section of the object to be produced in the respective layer by irradiation by means of an energetic radiation , comprisinga gas conveying device for generating a gas stream, a process chamber with a build area for building the object,wherein the process chamber at ...

Reclamation system for reactive metal powder for additive manufacturing system

A reclamation system for a metal powder, such as a reactive metal powder, is disclosed. The system may include a container; and a pressure source in fluid communication with the container for creating a selected pressure within the container, the container including: an inlet to a lower portion of the tank that is configured to hold a liquid, and an outlet. A controller controls the pressure source to control the pressure applied within the container between: a vacuum state creating a flow of air entrained metal powder to enter the inlet for forming a reclaimed metal powder by removing the metal powder from the air by immersion in the liquid, and an evaporation state that causes evaporation of the liquid to a gas that exits through the outlet. A condenser condenses the gas to a condensed liquid.

Heated Gas Circulation System for an Additive Manufacturing Machine

An additive manufacturing machine includes a heated gas circulation system for regulating the temperature of additive powder throughout an annular powder bed and parts formed therein. The additive manufacturing machine includes an annular build platform defining a plurality of perforations and a heated gas supply that provides a flow of heated air through the plurality of perforations and the powder bed. The additive manufacturing machine further includes a plurality of fairings for guiding the flow of heated gas to temperature sensitive regions to minimize temperature gradients within the powder bed which might otherwise result in distortion, thermal stresses, or cracking in the finished part.

Method for stabilizing a powder bed by means of vacuum for additive manufacturing

The invention relates to a device and a method for stabilizing a powder bed by means of low pressure for an additive manufacturing method, wherein the device comprises: a container open at least on one side, comprising a bottom, at least one side wall and a container opening; a filter in or above the bottom and/or in the at least one side wall, wherein an area occupied by the filter corresponds to the area of the bottom or the area of the side wall and wherein the filter is substantially impermeable to a powder comprising the powder bed; and a connection at the bottom and/or at the side wall of the container or on a side of the filter facing away from the container opening, wherein the connection is suitable for connection to a suction pump, such that a powder bed arranged in the container is pressed against the filter and stabilized by means of a vacuum produced by the suction pump.

Semiconductor and thermoelectric materials and methods of making the same using selective laser melting

Methods of fabricating a shaped material includes laser irradiating a first layer of a powder to convert the powder to a first material layer; disposing a second layer of the powder on the first material layer; laser irradiating the second layer of the powder to convert the powder to a second material layer; and fusing the first material layer and the second material layer, forming a shaped material having semiconducting or thermoelectric properties. A system to fabricate a shaped material includes an enclosure; a powder containment vessel within the enclosure and having a base, a powder storage section and a shaped material formation section adjacent to the storage section; a transfer mechanism for transferring a powder from the storage section to the formation section; and a laser to irradiate the powder when the powder is located within the formation section.

METHOD AND APPARATUS FOR PRODUCING AN OBJECT BY MEANS OF ADDITIVE MANUFACTURING

Method for producing an object by means of additive manufacturing, wherein said method comprises the steps of: 128-. (canceled)29. A method for producing an object by additive manufacturing , the method comprising the steps of:receiving, in a process chamber, a bath of material, wherein a surface level of the bath of material defines an object working area;solidifying, by a solidifying device, a selective layer-part of the material on the surface level; andcontrolled oxidization, of waste particles originating from the solidifying of the material, by controlling an oxygen level, such that oxidized waste particles are obtained and ignition of the waste particles is avoided.30. The method according to claim 29 , further comprising the step of extracting claim 29 , by an extracting device claim 29 , a mixture of gas and the waste particles from the process chamber.31. The method according to claim 30 , further comprising the step of filtering claim 30 , by a filter device claim 30 , the extracted mixture of the gas and the waste particles for collecting the waste particles.32. The method according to claim 31 , further comprising the step of transferring the waste particles claim 31 , collected by the filter device claim 31 , to a storage device for storing the waste particles removed from the filter device claim 31 , wherein the storage device is configured for the controlled oxidization.33. The method according to claim 29 , further comprising the step of measuring claim 29 , by a measurement device claim 29 , the oxygen level in the process chamber.34. The method according to claim 29 , wherein during the step of controlled oxidization a controlled amount of oxygen is supplied to the waste particles for obtaining the oxidized waste particles while avoiding ignition of the waste particles.35. The method according to claim 34 , wherein the controlled amount of oxygen is supplied to the waste particles based on the measured oxygen level.36. The method according to ...

Multivariate statistical process control of laser powder bed additive manufacturing

This invention relates to a method for using a multivariate statistical control process to reduce the variation of an additively manufactured part or object. The invention also relates to a system and software that can be used to implement the method in additive manufacturing devices or apparatuses.

Tooling Assembly for Decreasing Powder Usage in a Powder Bed Additive Manufacturing Process

A tooling assembly for mounting a plurality of components, such as compressor blades, in a powder bed additive manufacturing machine to facilitate a repair process is provided. The tooling assembly includes component fixtures configured for receiving each of the compressor blades, a mounting plate for receiving the component fixtures, and a complementary fixture defining a plurality of voids within which the compressor blades are received when the complementary fixture is mounted to the mounting plate such that less powder is required to fill the powder bed.

Tuning pneumatic jetting of metal for additive manufacturing

Devices, systems, and methods are directed to adjusting a pneumatic circuit associated with pneumatic ejection of liquid metal from a nozzle as the nozzle moves along a controlled three-dimensional pattern to fabricate a three-dimensional object. The adjustment of the pneumatic circuit can facilitate adjusting a pressure profile within the nozzle as pressurized gas moves through the nozzle to eject, through pneumatic force, liquid metal from the nozzle. Through adjustment of the pneumatic circuit, characteristics of the liquid metal (e.g., size, shape, and flow rate) can be controlled to facilitate control over fabrication of the three-dimensional object.