METHOD FOR PRODUCING AT LEAST ONE SOLID-BODY LAYER ON A SUPPORT THAT CAN ROTATE ABOUT AN AXIS OF ROTATION

The invention relates to a method for producing at least one solid body layer on a substrate (1), which is rotatable about an axis of rotation (2), according to specified geometric data, in which method an emitter assembly (11) is provided, which has a plurality of emitters which are designed as material dispensing nozzles and are arranged in emitter columns and emitter lines. Emitter columns adjacent to one another in the circumferential direction of an axis of rotation (2) are each offset relative to one another in the extension direction of the emitter columns in such a way that the emitters are arranged at different radial distances DA(i) from the axis of rotation (2), wherein the following applies: DA(i) DA(i+1). Printing points are assigned to the geometric data and are offset relative to one another in a matrix with a plurality of rows running alongside one another in such a way that the following applies: PA(j) > PA(j+1), where PA(j) is the radial distance of the j-th printing point ...

A NON-DESTRUCTIVE TESTING METHOD FOR CRACK DEFECTS, AND A TESTING STANDARD PART AND A MANUFACTURING METHOD THEREOF

A non-destructive testing method for crack defects, and a testing standard part and a manufacturing method thereof, used for the non-destructive testing of crack defects of an additive manufacturing workpiece. The manufacturing method of the crack defect standard part comprises: step A, setting a crack defect area of the standard part, in the crack defect area, the proportion of the crack defects in the crack defect area is set as a first proportion value; step B, selecting an additive manufacturing forming process for manufacturing the crack defect area to obtain a first process parameter of the additive manufacturing forming process corresponding to the first proportion value; and step C, performing the additive manufacturing forming process based on the first process parameter to form the crack defect area. The non-destructive testing method for crack defects of the present invention has the advantages of accurate and reliable testing results.

ADDITIVE MANUFACTURING MACHINE AND METHOD WITH IN-SITU DOSING RATE MEASUREMENT DEVICE

An additive manufacturing machine having a build vessel defining a work surface is provided. The additive manufacturing machine includes a build unit including a powder dispenser assembly defining a powder reservoir that receives additive powder; a positioning system adapted to provide independent movement of at least one of the build unit and the work surface with respect to one another in at least two dimensions; and a dosing rate measurement device in communication with the powder dispenser assembly, wherein the dosing rate measurement device measures a dosing rate of the additive powder in-situ.

BUILD UNIT

A build unit is provided with: a build apparatus that builds a build object on a base member on the basis of a set position that is set on the base member; and an output apparatus that output position information relating to the set position.

Shaping apparatus and shaping method

This shaping apparatus is equipped with: a movement system which moves a target surface; a measurement system for acquiring position information of the target surface in a state movable by the movement system, a beam shaping system that has a beam irradiation section and a material processing section which supplies a shaping material irradiated by a beam from beam irradiation section; and a controller. On the basis of 3D data of a three-dimensional shaped object to be formed on a target surface and position information of the target surface acquired using the measurement system, the controller controls the movement system and the beam shaping system such that a target portion on the target surface is shaped by supplying the shaping material while moving the target surface and the beam from beam irradiation section relative to each other.

Method and apparatus for 3D printing

A system includes a plurality of building trays, a printing station, a powder delivery station, a powder spreading station, a process compaction station and a stage. The printing station prints a mask pattern on each of the plurality of building trays. The powder delivery station applies a dose of powder material on each of the plurality of building trays. The powder spreading station configured to spread the dose of powder material on each of the plurality of building trays. The process compaction station compacts the powder material. The stage concurrently advances the plurality of building trays to each of the stations to concurrently build a single layer on each the plurality of building trays and repeats the advancing to build a plurality of layers on each of the plurality of building trays. A three dimensional object is formed in each of the building trays.

Process monitoring control system based on laser additive manufacturing

The invention relates to the technical field of additive manufacturing, in particular to a process monitoring control system based on laser additive manufacturing, which comprises a model storage unit, a model acquisition unit, a model analysis unit, a model processing unit and a control execution unit, determining the minimum surface area of each component according to the complexity so as to retain the feature position of the component as a feature region or divide the component into the component, and analyzing to obtain the connection position of each component, each feature region and the actual surface area of the component; and the model processing unit divides the three-dimensional model to be subjected to additive manufacturing into a plurality of parts according to the connecting positions, constructs a three-dimensional coordinate system of each part according to the connecting positions of the parts, and determines that the additive manufacturing machining mode of the feature ...

Gradient material preparation system with multi-energy-field synergistic effect

The invention relates to a gradient material preparation system with a multi-energy-field synergistic effect. The system comprises a machine tool, a laser heating device, a forming cylinder, a base plate, an ultrasonic vibration device, a magnetic field device, an electric field device, a powder laying device and a controller. The forming cylinder is fixed to the bottom of the workbench and internally provided with a first base capable of ascending and descending along the Z axis. The substrate is fixedly erected on the first base and located in the first opening. The ultrasonic vibration device is used for emitting ultrasonic waves to the substrate. The magnetic field device and the electric field device are both arranged below the substrate, and the direction and strength of a magnetic field and an electric field acting on the substrate can be adjusted. The powder laying device is used for forming single-layer to-be-processed powder on a substrate successively, so that the directions ...

Movable laser increasing and decreasing integrated repairing system and control method thereof

The invention discloses a movable laser increasing and decreasing integrated repairing system and a control method thereof. The movable laser increasing and decreasing integrated repairing system comprises a linkage numerical control machining center and a laser cladding head. The linkage numerical control machining center is a five-axis linkage horizontal numerical control machining center and comprises a workpiece table, a sliding base and a machining equipment fixing table, a sliding base fixing frame is arranged on one side of the workpiece table, a BC-axis rotary table is arranged on the workpiece table, and a workpiece clamping tool used for clamping a workpiece is arranged on the BC-axis rotary table. The workpiece table is further provided with a machining equipment arrangement frame used for containing a laser cladding head and a machining tool bit, the sliding base is fixed to the sliding base fixing frame, the machining equipment fixing table is in sliding connection with the ...

METHOD FOR ADDITIVELY MANUFACTURING A THREE-DIMENSIONAL COMPONENT, AND REPAIRING SYSTEM

The invention relates to a method (12) for additively manufacturing a three-dimensional component (10) from a plurality of component layers (Li), said method being achieved by the repeated incremental addition of powdered or wire-like component starting material and consolidating the shape of the component starting material by selective melting and/or sintering by means of at least one energy source (11), wherein energy is input in accordance with an initial path plan (13) of the or each energy source (11) for a component layer (Li), said path plan being defined before starting the completion of said component layer (Li), the creation of the component layer (Li) is monitored in a process monitoring system (22), and the component layer (Li) is at least partially consolidated. The invention is characterised in that: using data from the process monitoring system (22) about the consolidated portion of the component layer (Li), a location and spread of at least one defect site (Dj) in the component ...

POROSITY PREDICTION

Examples of methods for predicting porosity are described herein. In some examples, a method includes predicting a height map. In some examples, the height map is of material for metal printing. In some examples, the method includes predicting a porosity of a precursor object. In some examples, predicting the porosity of the precursor object is based on the predicted height map.

Binder jetting apparatus and methods

A binder jet printing apparatus (10), along with methods of its use, is provided. The binder jet printing apparatus (10) may include: a job box (18) having a actuatable build plate (46) therein; a supply box (54) having a bottom platform (56) that is actuatable within the supply box (54); a print system including at least one print head (32) connected to a binder source (38) and configured to apply a pattern of binder onto an exposed powder layer (42) over the build plate (46) of the job box (18); a recoat system (16) including a recoater configured to move from the supply box (54) to the job box (18) to transfer powder from the supply box (54) to the job box (18) so as to form a new powder layer (48) over the build plate (46) of the job box (18); and a cure system (14) configured to direct electromagnetic radiation onto the job box (18).

MACHINE FOR MANUFACTURING GREEN CERAMIC OR METAL MATERIAL PARTS

Cette machine comporte une surface horizontale de réception (10) qui est constituée par le fond d'un bac (B), ledit bac (B) ayant une largeur et une longueur, et un dispositif d'amenée et d'étalement d'une suspension qui comprend un applicateur de suspension (1) et un réservoir externe (R), l'applicateur (1) comprenant une réserve de suspension (6) alimentée par le réservoir externe (R), au moins un dispositif de formation de vide dans la réserve (6) et au moins un trou (T) relié à la réserve (6) et formé en regard de la surface (10), le ou les dispositifs de formation de vide étant commandés pour réguler la quantité de suspension libérée par le ou les trous (T), l'applicateur (1) étant disposé selon la largeur du bac (B) et ayant au moins la largeur d'impression et étant configuré pour se déplacer en translation selon la longueur du bac (B) pour être apte à appliquer de la suspension par ledit ou lesdits trous (T) sur la surface (10).

DETECTION AND LOCATION OF POWDER SPREADING ANOMALIES USING ACOUSTIC EMISSION MEASUREMENTS

METHOD FOR THE ADDITIVE MANUFACTURING OF A COMPONENT

SYSTEM AND METHOD FOR DETECTING AND REGULATING MICROSTUCTURE ONLINE WITH ELECTROMAGNETIC ASSISTANCE

ABSTRACT A system and a method for detecting and regulating a microstructure online with an electromagnetic assistance is disclosed. The system has a substrate, and a forming device, a detecting device and a regulating device located above the substrate, the detecting device is connected with the regulating device having an electromagnetic shock regulating unit and an electromagnetic stirring regulating unit; a workpiece may be formed layer by layer on the substrate through the forming device, the detecting device performs a real-time detection for the microstructure in a formed area, and transmits a detection result to the regulating device, and according to the detection result, the electromagnetic shock regulating unit may perform the electromagnetic shock on a newly formed fused micro area, or the electromagnetic stirring regulating unit may perform the electromagnetic stirring on a molten pool to regulate the microstructure of the workpiece. 16058629.2 105490/3 Date Recue/Date Received ...

Additive manufacturing equipment forming cavity station switching system and method

The invention provides an additive manufacturing equipment forming cavity station switching system and method. The system comprises a controller, a powder cleaning cabin, a sealed cabin, a forming cavity, a powder cleaning station, a forming station, a forming cavity moving assembly, a jacking mechanism and a Z-axis push rod guide assembly. A powder cleaning station is arranged below the powder cleaning cabin, and a forming station is arranged below the sealed cabin; the forming cavity moving assembly is arranged above the forming station and the powder cleaning station, the forming cavity is arranged above the forming cavity moving assembly and can be switched between the powder cleaning station and the forming station, and the forming cavity can be connected with the powder cleaning cabin or the sealed cabin above in a sealed mode when switched between the powder cleaning station and the forming station. According to the system, a closed space of an integral printing cavity and a closed ...

Intelligent monitoring and fault feedback processing system and method for powder bed in printing process

The invention provides an intelligent monitoring and fault feedback processing system and method for a powder bed in the printing process, and the system specifically comprises a monitoring integrated device which comprises a high-definition industrial camera and a PLC industrial control computer system and is used for the real-time monitoring of the powder bed and the input and output of a PLC signal; the air field control assembly comprises a circulating fan, an air blowing box and an air suction box, the circulating fan is used for controlling the air volume and the air speed in real time, the air blowing box serves as a powder bed breadth air blowing channel, and the air suction box serves as a powder bed breadth air suction channel; the powder supply control assembly comprises a stepping motor, a powder supply cylinder precision lead screw, a powder supply cylinder cabin and a powder laying scraper, and the powder supply amount is accurately controlled through the assemblies; and an ...

METHODS OF EXTRUDING A NANOPARTICLE COMPOSITION ONTO A SUBSTRATE

A method of extruding a nanoparticle composition onto a substrate is disclosed. A nanoparticle composition dispenser includes a capillary tube. The capillary tube is oriented such that a first longitudinal axis extending through the capillary tube is tilted at an oblique angle relative to a vertical axis. The capillary tube is positioned above the substrate such that the capillary tube and its reflection from the substrate are visible within a field-of-view of a camera. Digital images of the capillary tube and its reflection are captured and processed to detect the first longitudinal axis extending through the capillary tube and a second longitudinal axis extending through the reflection. A point of intersection of the first longitudinal axis and the second longitudinal axis is calculated to estimate a zero-height position. The capillary tube is positioned at a start position in accordance with the zero-height position.

Three-Dimensional Powder Bed Fusion Additive Manufacturing Apparatus and Three-Dimensional Powder Bed Fusion Additive Manufacturing Method

A three-dimensional powder bed fusion additive manufacturing apparatus includes a determination unit that determines presence or absence of powder scattering in a second preheating step using at least a third image that is an image of a powder layer photographed by a camera after the second preheating step among a first image that is an image of the powder layer photographed by the camera after a first preheating step, a second image that is an image of the powder layer photographed by the camera after the powder application step, and the third image.

LIQUID EJECTOR FOR AN ADDITIVE MANUFACTURING SYSTEM AND PRINTING METHODS THEREOF

An ejector for an additive manufacturing printing system is disclosed, including an ejector body having a nozzle, a heating element to heat a solid printing material in the ejector, causing the solid printing material to change to a liquid printing material, and a piston disposed within the ejector body capable of translational motion. The ejector may include a segmented solenoid coil wrapped at least partially around the ejector body, which may be powered to cause the piston to translate along a longitudinal axis of the ejector thereby causing one or more drops of the liquid printing material to be jetted out of the nozzle. A method of ejecting liquid from an ejector is also disclosed, including melting a printing material within an ejector to form a liquid printing material, and moving a piston towards an ejector nozzle, and ejecting a drop of liquid printing material from the ejector nozzle.

SYSTEM AND METHOD FOR MANUFACTURING A COMPONENT

A system for manufacturing a component includes a build platform, a powder delivery unit, an energy unit, at least one analyser, and a controller. The build platform has a build surface. The powder delivery unit is configured to deposit successive layers of a powdered material on the build surface of the build platform to form a powder bed. The energy unit is configured to selectively direct an energy beam to one or more predetermined portions of each successive layer of the powder bed to fuse the powdered material. The at least one analyser is configured to direct an X-ray beam to the powdered material and detect an X-ray fluorescence emitted by the powdered material in response to being excited by the X-ray beam. The controller is configured to determine a contamination of the powdered material based on the detection of the X-ray fluorescence.

SYSTEM, METHOD AND MEDIA FOR ADDITIVE MANUFACTURING

УСТРОЙСТВО ДЛЯ ПОДАЧИ ПОРОШКА ДЛЯ НАНЕСЕНИЯ И УСТАНОВКА ДЛЯ НАНЕСЕНИЯ ПОРОШКОВОГО ПОКРЫТИЯ С УСТРОЙСТВОМ ДЛЯ ПОДАЧИ ПОРОШКА

Изобртение относится к устройству для подачи порошка для нанесения к порошковому аппликатору, а также к установке для нанесения порошкового покрытия, содержащей упомянутое устройство. Указанное устройство содержит порошковый питатель с порошковым выпускным каналом, порошковый выпускной клапан, чтобы открывать или закрывать порошковый выпускной канал, задатчик номинального значения для задания номинальной продолжительности (Тном) открытия порошкового выпускного клапана, сенсор для определения действительной продолжительности (Тд) открытия порошкового выпускного клапана и оценочный блок для определения отклонения (ΔТ) между номинальной продолжительностью (Тном) открытия и действительной продолжительностью (Тд) открытия порошкового выпускного клапана. В упомянутой установке для нанесения порошкового покрытия с упомянутым устройством предусмотрен порошковый аппликатор, который через порошковую линию соединен с упомянутым устройством. Упомянутые устройство для подачи порошка и установка с указанным ...

Устройство для получения изделий методом селективного лазерного плавления

Изобретение относится к области порошковой металлургии и аддитивных технологий, в частности к изготовлению изделий сложной пространственной конфигурации из мелкодисперсного металлического порошка методом селективного лазерного плавления. Устройство содержит силовую раму, установленную на ней герметичную камеру с размещенным в ней средством нанесения порошкообразного материала в виде установленного с возможностью горизонтального возвратно-поступательного перемещения и формования слоя изделия механизма нанесения слоев порошка. Над герметичной камерой расположен пирометр и прилегающие к ней сканатор, столы построения и подачи, бункер построения детали, бункер подачи порошка и бункер сбора излишков порошка. К сканатору прикреплен датчик первого слоя, а на силовой раме расположен датчик точного вертикального позиционирования, основанные на принципе оптической триангуляции. Перед датчиком точного вертикального позиционирования расположено защитное сопло обдува. Также устройство содержит водяные ...

GUSSFORMVERFAHREN EINES LAMINIERTEN KÖRPERS UND GUSSFORMVORRICHTUNG EINES LAMINIERTEN KÖRPERS

Bereitgestellt ist ein Gussformverfahren eines laminierten Körpers zum Gussformen eines laminierten Körpers durch Bestrahlen von auf einen Träger aufgebrachtem Pulver mit einem Strahl und dadurch Schmelzen und Verfestigen des Pulvers oder Sintern des Pulvers. Das Gussformverfahren des laminierten Körpers beinhaltet: einen Bewegungsabstandseinstellschritt S22 zum Einstellen eines Bewegungsabstands des Trägers auf eine Länge, die einen bestimmten Anteil eines Partikeldurchmessers des Pulvers ausmacht; und einen Gussformschritt S24 zum Gussformen des laminierten Körpers durch Wiederholen eines Prozesses des Bewegens des Trägers nach unten um den Bewegungsabstand, des Zuführens des Pulvers auf den so bewegten Träger und des Bestrahlens des zugeführten Pulvers mit dem Strahl, um das Pulver zu schmelzen und zu verfestigen oder das Pulver zu sintern. Mit diesem Gussformverfahren des laminierten Körpers kann eine Beeinträchtigung der Fähigkeiten des laminierten Körpers verhindert werden.

Laser additive manufacturing control method, electronic equipment and computer readable storage medium

The invention provides a laser additive manufacturing control method, electronic equipment and a computer readable storage medium, and relates to the field of additive manufacturing. The method comprises the steps that a galvanometer is controlled to deflect, so that a laser beam emitted by a laser melts powder on a printing substrate, and additive printing is carried out on the printing substrate; obtaining an additive manufacturing image, collected by an imaging device, of the galvanometer deflection laser beam melting powder; based on the additive manufacturing image, the scanning speed of a galvanometer, the laser molten pool state and the flame splashing form can be obtained through analysis; and when at least one of the scanning speed of the galvanometer, the laser molten pool state and the flame splashing form does not meet the preset requirement, the scanning speed of the galvanometer and/or parameters of the laser are/is adjusted. According to the invention, feedback adjustment ...

Multi-connected powder spreading device for additive manufacturing and powder spreading method of multi-connected powder spreading device

The invention discloses a novel multi-connected powder spreading device for additive manufacturing and a powder spreading method of the novel multi-connected powder spreading device. The novel multi-connected powder spreading device comprises a printer outer frame, a laser, a front-back moving lead screw, an up-down moving lead screw, a selenium drum fixing frame outer frame, a conveying belt wheel fixing frame, a powder spreading detection laser, a substrate, a positioning detector, a printer laser module, a conveying belt, a conveying belt wheel, more than two sets of electrostatic powder spreading devices and a controller, each set of electrostatic powder spreading device comprises a powder absorbing roller, a charging roller, a selenium drum, a transfer printing roller, an irradiation laser, a selenium drum box fixing frame and a selenium drum box. And meanwhile, the service life of the part working in a high-temperature environment can be prolonged, and powder of a high-heat-conductivity-coefficient ...

APPARATUS FOR THERMAL SENSING DURING ADDITIVE MANUFACTURING AND METHODS THAT ACCOMPLISH THE SAME

An additive manufacturing apparatus includes a laser and a detection system. The laser emits a laser beam to heat a powder bed to form a melt pool, and the melt pool emits light proportional to a temperature of the melt pool. The detection system includes a spectral disperser and one of a) two or more on-axis sensors or b) a line scanner. The two or more on-axis sensors or the line scanner are/is located along an axis of the emitted light, the detection system receives the emitted light from the melt pool, and an intensity of the emitted light detected by the a) two or more on-axis sensors or the b) line scanner is compared with a blackbody spectral map at a particular wavelength of the emitted light to determine a temperature of the melt pool.

METHOD AND APPARATUS FOR PROVIDING ILLUMINATION IN AN ADDITIVE MANUFACTURING PROCESS

An apparatus for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts corresponds to successive cross sections of the three-dimensional article, the apparatus comprising: a powder distributor configured for evenly distributing a layer of powder on top of a work table provided inside a build chamber; and at least one high energy beam source emanating at least one high energy beam configured for fusing the powder layer in selected locations corresponding to the cross section of the three-dimensional article, wherein the apparatus further comprising at least one target area arranged spaced apart from the layer of powder for emanating light when irradiated by the at least one high energy beam.

ADDITIVE MANUFACTURING MACHINE WITH POWDER DISPENSING BY SIEVING

A powder bed fusion additive manufacturing machine (10) comprises a working area (20) able to receive a superposition of different layers of powder, a device (30) for depositing a layer of powder onto the working area and a consolidation source (40) used to selectively consolidate each layer of powder deposited onto the working area, the device for depositing a layer of powder comprising a powder reservoir (32) able to be positioned above the working area, and a powder distribution opening being provided in the bottom part of the reservoir, the device for depositing a layer of powder comprising a vibrating device (68) able to subject the reservoir to vibrations, and the powder distribution opening of the reservoir being equipped with a sieve. The reservoir is mounted on a weighing sensor.

Powder packing methods and apparatus

The present disclosure generally relates to powder packing for additive manufacturing (AM) methods and systems. Conventional powder packing methods are manual and non-standardized, and they result in operator fatigue and potentially product inconsistencies. Powder packing according to the present disclosure improves standardization and reduces turnaround time, with the potential to lower the cost of AM.

METHOD FOR CALIBRATION OF AT LEAST ONE IRRADIATION DEVICE OF AN APPARATUS FOR ADDITIVELY MANUFACTURING THREE-DIMENSIONAL OBJECTS

Methods of calibrating an irradiation device of an apparatus for additively manufacturing three-dimensional objects include arranging at least one calibration body in a beam guiding region in which an energy beam can be guided via an irradiation device, with the calibration body being at least partially permeable for the energy beam, guiding the energy beam to at least one position on the calibration body and/or in the volume of the calibration body, generating at least one calibration structure in the at least one position, determining at least one calibration parameter of the at least one calibration structure, determining a calibration status of the irradiation device dependent on the at least one calibration parameter, and calibrating the irradiation device based on the calibration status.

THREE-DIMENSIONAL ADDITIVE MANUFACTURING DEVICE AND METHOD WITH DETECTION OF POWDER BED ABNORMALITIES

There are provided a three-dimensional powder bed fusion additive manufacturing apparatus and a three-dimensional powder bed fusion additive manufacturing method for suppressing an occurrence of a defect in a shaped object. A three-dimensional powder bed fusion additive manufacturing apparatus (50) includes: a base plate (10); a Z drive mechanism (5) configured to move the base plate (10) in a vertical direction; a powder supplier configured to supply a powder sample onto the base plate (10) to laminate a powder layer; an electron gun (2) configured to generate a beam to be irradiated to the powder layer; a controller configured to control the Z drive mechanism (5), the powder supplier, and the electron gun (2) to irradiate the beam to a powder bed that is an uppermost layer of the powder layer and perform melting on a two-dimensionally shaped region in which a shaped model is sliced by one layer to shape a three-dimensionally shaped object; and two segment detectors (16A) and (16B) configured ...

PART MANIPULATION USING PRINTED MANIPULATION POINTS

3D PRINTING METHOD WITH ADVANCED GAS FLOW

The present invention refers to a method of utilizing a 3D printer to improve the insight in the gas flow characteristics and the possibilities to predict and optimize 3D prints provided by such 3D printer. Furthermore, the present invention refers to a computer program product utilized to execute such method. Additionally, the present invention refers to a base plate beneficially utilized herein. Additionally, the present invention refers to a 3D printing device adapted to realize such method. Furthermore, the present invention refers to a control device utilized for such method. Additionally, the present invention refers to an upgrade kit containing such control device. Furthermore, the present invention refers to a use of a temperature profile acquired by an inventive method to adapt a 3D printing process.

DEVICE FOR PRODUCING A MOULDED BODY

The invention relates to an apparatus for remelting material powder in layers to form a shaped body in a process chamber. The apparatus has a carrier for the layer build-up and an irradiation device for irradiating the powder in accordance with cross-sectional regions of the shaped body associated with the shaped body layers to be produced. A powder layer levelling and smoothing device having a smoothing slide for homogenising an amount of material powder on the carrier is provided, as well as an extraction device having a suction nozzle for extracting process smoke. The suction nozzle is movable in motor-driven fashion in the process chamber. Said suction nozzle is coupled to the smoothing slide for joint movement and is operable in suction mode during the joint movement, the irradiation device being active for irradiating the powder.

DEVICE AND METHOD FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE

We describe a process chamber, an apparatus, a modular system, a method, a safety device, a positioning system and a system for producing a three-dimensional workpiece and/or for use thereof when producing a three-dimensional workpiece. The process chamber for producing the three-dimensional workpiece via an additive layer construction method comprises: a material supply unit comprising a substantially ring-like shaped end portion at a first side of the process chamber, wherein the material supply unit is adapted to supply, via the end portion, material to a carrier on which the material is to be processed by the process chamber for producing the three-dimensional workpiece, and an opening at the first side of the process chamber for processing, by the process chamber, the material supplied on the carrier in order to produce the three-dimensional workpiece, wherein the substantially ring-like shaped end portion surrounds the opening.

Powder bed machine and method for acquiring the process data of a manufacturing process in a powder bed machine

A powder bed machine including a distribution device, which is configured to be charged with process material. The powder bed machine has a residual powder tank within the manufacturing process, wherein the residual powder tank holds a surplus of the process material. The powder bed machine is positioned on feet and weighing cells are located in the feet.

Optical manufacturing process sensing and status indication system

An optical manufacturing process sensing and status indication system is taught that is able to utilize optical emissions from a manufacturing process to infer the state of the process. In one case, it is able to use these optical emissions to distinguish thermal phenomena on two timescales and to perform feature extraction and classification so that nominal process conditions may be uniquely distinguished from off-nominal process conditions at a given instant in time or over a sequential series of instants in time occurring over the duration of the manufacturing process. In other case, it is able to utilize these optical emissions to derive corresponding spectra and identify features within those spectra so that nominal process conditions may be uniquely distinguished from off-nominal process conditions at a given instant in time or over a sequential series of instants in time occurring over the duration of the manufacturing process.

Methods and apparatus for selectively combining particulate material

A method of selectively combining particulate material, comprising: (i) providing a layer of particulate material to a part bed; (ii) providing radiation to sinter a portion of the material of the layer; (iii) providing a further layer of particulate material overlying the prior layer of particulate material including the previously sintered portion of material; (iv) providing radiation to sinter a further portion of the material within the overlying further layer and to sinter said further portion with the previously sintered portion of material in the prior layer; (v) successively repeating blocks (iii) and (iv) to form a three-dimensional object; and wherein at least some of the layers of particulate material are pre-heated with a heater prior to sintering a portion of the material of the respective layer, the heater being configured to move relative to, and proximate, the particulate material.

APPARATUS AND METHOD FOR ADDITIVE MANUFACTURING BY ULTRA-HIGH-SPEED LASER CLADDING

The present invention relates to an apparatus and method for additive manufacturing by ultra-high-speed laser cladding. The apparatus includes a laser generator, a beam expander, and a reflector. A light exit path of the reflector is arranged facing a cladding nozzle. The cladding nozzle is connected to a powder pool through a hose and a pump in succession. A matrix is arranged below the cladding nozzle. The matrix is located on a rotary platform. A main stepping motor is fixedly mounted below the rotary platform. The main stepping motor is fixed on a lifting platform. A laser rangefinder is arranged above the matrix. During the laser cladding-based additive manufacturing process, the ultrasonic vibration device, the infrared camera, the high-speed camera, the laser rangefinder, and the radiological inspection system are turned on to monitor the laser cladding process in real time.

METHOD OF OPERATING AN IRRADIATION SYSTEM, IRRADIATION SYSTEM AND APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE WITH POLARIZATION CONTROL

In a method of operating an irradiation system (10) for irradiating layers of a raw material powder with laser radiation in order to produce a three-dimensional work piece (110) at least a section of a raw material powder layer (11) applied onto a carrier (102) is selectively irradiated with linearly polarized laser radiation. An orientation of a plane of polarization of the linearly polarized laser radiation is controlled in dependence on an orientation of a plane of incidence of the linearly polarized laser radiation on the raw material.

QUALITY ASSURANCE IN ADDITIVE MANUFACTURING MONITORING

A Method for quality assurance in additive manufacturing monitoring is presented, the method comprising, (i), providing a machine control unit (6) of an additive manufacturing system (100), the control unit (6) being coupled to a primary machine sensor (4) and a redundant machine sensor (4'), (ii), conducting a sensor check, wherein the primary sensor (4) and the redundant sensor (4') are read out and the respective readings of the primary sensor (4) and the redundant sensor (4') compared, (iii), conducting an algorithm check, wherein a primary algorithm (A) and a backup algorithm (A, B) are executed for each of the sensor readings, and, (iv), applying a logic AND-function with the checked sensor readings as input each with a result of the primary algorithm (A) as input and with a result of the backup algorithm (A, B) as input, respectively, wherein a manufacturing process of the system (100) is only maintained when the AND-functions read out "true" (T) and wherein - when the AND-functions ...

THREE-DIMENSIONAL POWDER BED FUSION ADDITIVE MANUFACTURING APPARATUS AND THREE-DIMENSIONAL POWDER BED FUSION ADDITIVE MANUFACTURING METHOD

To provide a technique capable of detecting powder application failure of a powder material (32) and suppressing a decrease in dimensional accuracy of a manufactured object due to the powder application failure. A three-dimensional powder bed fusion additive manufacturing apparatus includes a powder application device that includes a squeegee (16c) and applies a powder material (32) to a build plate (22) to form a powder layer (32a), a camera (42) that photographs a manufactured surface (32b) of the powder layer (32a), and a determination unit (58) that determines whether powder application failure of the powder material (32) has occurred using an image photographed by the camera (42) while or immediately after the squeegee (16c) passes through the manufactured surface (32b).

APPARATUS AND METHOD FOR ADDITIVELY MANUFACTURING THREE-DIMENSIONAL OBJECTS

METHOD OF DETECTING MALFUNCTION IN ADDITIVE MANUFACTURING

Устройство для лазерного нанесения металлокерамического покрытия

Полезная модель относится к технологии лазерной 3D-печати из металлокерамики. Устройство содержит размещённые в металлическом корпусе блок нагрева, нагревательный элемент которого выведен на наружную поверхность металлического корпуса, модуль перемещения, приводы которого соединены с блоком подачи лазерного излучения, снабжённого отверстием для подачи порошка и коаксиальным соплом, блок регулировки параметров, блок контроля и управления, соединённый со всеми блоками устройства, блок охлаждения. Блок контроля и управления снабжён термопарой, блок регулировки параметров снабжён электромагнитным контактором, трансформатором и дисплеем, блок нагрева снабжён пластиной, выполненной из сплава нихрома и расположенной в керамической трубке. Обеспечивается повышение прочности металлокерамического покрытия при его наплавлении.

Additive Fertigungsvorrichtung

Eine additive Fertigungsvorrichtung (100) umfasst Folgendes: eine Innenlichtstrahl-Abstrahleinrichtung (121), die einen Innenlichtstrahl (LC) abstrahlt; eine Außenlichtstrahl-Abstrahleinrichtung (122), die einen Außenlichtstrahl (LS) abstrahlt; und eine Steuereinrichtung (130). Wenn ein Schmelzbad mit dem Außenlichtstrahl (LS) bestrahlt wird, steuert die Steuereinrichtung (130) eine Leistungsdichte des Außenlichtstrahls (LS), der eine Leistung pro Flächeneinheit darstellt, derart, dass eine Abkühlgeschwindigkeit des Schmelzbads, die einen Temperaturabfall pro Zeiteinheit darstellt, an einem Gefrierpunkt eines Carbidbinders, der in dem Schmelzbad enthalten ist, 540°C/s oder weniger beträgt, wobei das Schmelzbad durch Bestrahlen eines Materials, das einen Hartstoff und den Carbidbinder enthält, mit dem Innenlichtstrahl ausgebildet wird, um das Material zu schmelzen. Dieses additive Fertigungsverfahren kann Risse verhindern und mit einer einfachen Konfiguration additiv ein geformtes Objekt ...

Method of and apparatus for additive layer manufacture

POSITIONING MEANS FOR ADDITIVE MANUFACTURING

The present invention relates to a positioning method for an additive build-up (12) on a pre-existing component (10). The method comprises, a), providing the pre-existing component (10) as a substrate for the build-up (12), b), forming surface alignment features (13) of predefined dimensions and co-ordinates on a substrate surface of the component (10), c), recording an image of the substrate surface (10), wherein the image includes a contour (15) of the surface (11) as well as the alignment features (13), d), scaling the recorded image to real dimensions based on the predetermined dimensions of the alignment features (13), e) providing a geometry of the build-up (12), and, f), aligning the geometry of the build-up (12) and the scaled geometry of the substrate surface (11) based on the predefined coordinates. Moreover, an according computer program product, an apparatus and a method of additively manufacturing the build-up are provided.

METHOD FOR OPERATING A MANUFACTURING DEVICE AND MANUFACTURING DEVICE FOR THE ADDITIVE MANUFACTURING OF A COMPONENT FROM A POWDER MATERIAL

A method operates a powder bed-based manufacturing device for additive manufacturing of a component from a powder material. The method includes: taking at least one optical recording of a working powder layer of the powder material on a construction location of the manufacturing device; locally evaluating the at least one optical recording; and examining the working powder layer for local coating errors using the evaluation of the at least one optical recording.

Additive Manufacturing With Photo-Acoustic Tomography Defect Testing

An additive manufacturing method supporting layer by layer testing includes a layer test including generating a hammer beam using laser light having a first wavelength, generating a read-out beam using laser light having a second wavelength, directing the generated hammer beam toward a first layer on a part to provide an acoustic hammer pulse that induces surface movement of the part, and reading the surface movement of the part using the read-out beam directed to a second position on the part. Layers can be added and the layer test repeated.

MONITORING SYSTEM AND METHOD OF IDENTIFICATION OF ANOMALIES IN A 3D PRINTING PROCESS

A monitoring system for in-situ identification of anomalies of a workpiece in a 3D printing manufacturing process is provided. The monitoring system includes an optical sensor having an optical path; an infrared sensor having an IR path; an optical device configured to merge the optical and the IR paths to obtain a merged optical path, which is arranged to be directed to the workpiece during a first stage of a 3D printing manufacturing process to obtain a first perception data; and a processor configured to identify anomalies of the workpiece based on the first perception data. A method is also provided. The method includes steps of: merging an optical path of an optical sensor and an infrared path of an IR sensor using an optical device to obtain a merged path; directing the merged path to the workpiece during a first stage of a 3D printing manufacturing process to obtain a first perception data; and identifying anomalies of the workpiece based on the first perception data.

Contact detection in additive manufacturing

Certain aspects of the present disclosure provide a method for setting a working distance of an additive manufacturing system, including: moving a deposition element towards a build surface; detecting, via a contact detection system, a contact between the deposition element and the build surface; stopping the moving of the deposition element in response to detecting the contact between the deposition element and the build surface; and moving the deposition element away from the build surface a determined working distance.

POWDER BED FUSION METHODS AND RELATED APPARATUS

A method of determining instructions to be executed by a powder bed fusion apparatus, in which an object is built in a layer-by-layer manner by selectively irradiating regions of successively formed powder layers with an energy beam. The method includes determining an exposure parameter for each location within a layer to be irradiated with the energy beam from a primary exposure parameter, the exposure parameters varying with location. An amount each exposure parameter varies from the primary exposure parameter is determined, at least in part, from a geometric quantity of the object derived from the location of the irradiation.

NON-UNIFORM ELECTRIC FIELDS TO COMPACT METAL POWDER BUILD MATERIAL

In one example in accordance with the present disclosure, an additive manufacturing system is described. The additive manufacturing system includes a build material distributor to deposit metal powder build material on abed. The additive manufacturing system also includes at least a first electrode below the bed and a second electrode above the bed to generate a non-uniform electric field to compact deposited the metal powder build material. A hardening system of the additive manufacturing system selectively hardens metal powder build material in a pattern of a layer of a three-dimensional object to be printed.

Frequency control of spreader vibrations

In some examples, a controller receives measurement data responsive to operation of a vibrated spreader for use in dispensing a build material onto a target surface, and controls a frequency of a vibration of the spreader based on the measurement data.

METHOD FOR CALIBRATING AN IRRADIATION DEVICE FOR AN APPARATUS FOR ADDITIVELY MANUFACTURING THREE-DIMENSIONAL OBJECTS

Methods for calibrating an irradiation device for an apparatus for additively manufacturing three-dimensional objects include generating at least two first and two second calibration patterns, in at least two different first positions and at least two different second positions; determining position information relating to the positions of the calibration patterns; generating a calibration quality value relating to a calibration status of the irradiation device; simulating at least two first calibration patterns and at least two second calibration patterns based on at least one changed irradiation parameter; determining a calibration quality value for the simulated calibration patterns; and repeating the simulation and determination of the calibration quality value until a maximum or minimum calibration quality value is reached.

DYNAMIC DETECTION OF LAYER THICKNESS FOR AN ADDITIVE MANUFACTURING PROCESS

Laser repair equipment and process for damage of sucker rod in oil field

The invention discloses an oil field sucker rod damage laser repairing device and technology, and relates to the technical field of laser cladding, the oil field sucker rod damage laser repairing device comprises a first movable regulation and control guide rail and a laser cladding head, a movable seat frame is installed on the first movable regulation and control guide rail, and the laser cladding head is installed in the middle of the movable seat frame in a liftable mode; a cooling mechanism and a roundness monitoring mechanism are installed on the left side and the right side of the movable seat frame correspondingly, and a preheating mechanism is further arranged on the right side of the roundness monitoring mechanism. Through the arrangement of the roundness monitoring ring, the monitoring spiral track with lower roundness in the spiral tracks on the surface of the to-be-repaired sucker rod can be selected as the cladding track of the laser cladding head, so that the uniformity of ...

Metal 3D printing equipment for dissimilar metal cylinder production

The metal 3D printing equipment for dissimilar metal cylinder production comprises an equipment box, a machining area and a gas storage box, the gas storage box is installed on the outer wall of the equipment box, the inner wall of a groove is movably connected with a gas spraying plate through a pin shaft, and telescopic branch pipes are installed on the inner wall of the groove; an arc-shaped toothed plate is installed at the bottom of the air injection plate, and a gear is installed at the output end of the first motor. By installing an air injection plate and an air storage box, air in the air storage box is sprayed out through the air injection plate through a main pipe and two sets of branch pipes, the air injection plate sprays out dust-free air flow, the air flow scours in a machining area, at the moment, a first motor rotates to drive a gear to rotate, and the gear rotates to drive a toothed plate to move; the toothed plate moves to drive the air injection plate to gradually and ...

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.

SYSTEM AND METHOD FOR CONTROLLING GAS FLOW TEMPERATURE IN ADDITIVE MANUFACTURING

An additive manufacturing system (100) including an enclosure defining a build chamber (102), a powder bed (104) within the build chamber, an energy source (108) for directing a heat at the powder bed to melt a portion of the powder, a gas flow system (110) connected to the enclosure, a gas outlet (112) for directing gas into the build chamber for removing soot from the powder bed, and a temperature control module (150) for controlling a build chamber temperature and a gas temperature.

CALIBRATION FOR ADDITIVE MANUFACTURING

APPARATUS FOR MANUFACTURING THREE-DIMENSIONAL OBJECTS

CLEANING STATION AND METHOD OF CLEANING A PRINT HEAD

POWDER SUPPLY ASSEMBLY FOR ADDITIVE MANUFACTURING

A processing machine (10) for building an object (11) from powder (12) includes a build platform (26A); a powder supply assembly (18) that deposits the powder (12) onto the build platform (26A) to form a powder layer (13); and an energy system (22) that directs an energy beam (22D) at a portion of the powder (12) on the build platform (26A) to form a portion of the object (11). The powder supply assembly (18) can include (i) a powder container (640A) that retains the powder (12); (ii) a supply outlet (639) positioned over the build platform (26A); and (ii) a flow control assembly (642) that selectively controls the flow of the powder (12) from the supply outlet (639).

ADDITIVE MANUFACTURING SYSTEM WITH THERMAL CONTROL OF MATERIAL

A processing machine (10) for building an object (11 A) includes: (i) a build platform (44) that supports a material (12); (ii) a build chamber assembly; (iii) a material supply device (18) that deposits material onto the build platform (44) in a deposition area (34); (iv) an energy system (22) that selectively melts the material (12) in a melting area (36); (v) a heating assembly (26) that heats the material (12) in a heating area (38); (vi) a cooling assembly (28) that cools the material (12) in a cooling area (40); (vii) a mover assembly (32) that moves the build platform (44); and (viii) a control system (24) that controls the energy system (22), the heating assembly (26) and the cooling assembly (28) to actively control the temperature on the build platform (44).

METHOD AND APPARATUS FOR CONTINUOUSLY REFRESHING A RECOATER BLADE FOR ADDITIVE MANUFACTURING

The present disclosure generally relates to additive manufacturing systems and methods involving a mechanism for feeding in a desired amount of fresh recoater blade. This can be accomplished by, for example, spooling the fresh blade material from a spool. This helps prevent work stoppage when a portion of a recoater blade becomes damaged. As such, the present disclosure also relates to a system and method for detecting whether a recoater blade is damaged, and if there is damage, then causing a fresh blade portion to be fed in.

Methods for detecting a position of an energy beam spot and apparatuses for performing the same

A method for detecting a position of an energy beam comprises mapping a first density modulated x-ray signal with a plurality of locations on an energy beam target, thereby generating a model of a background x-ray intensity. The method further comprises forming an x-ray signal time series using subsequent intensity modulated x-ray signals, each resulting from scanning the energy beam along the energy beam target in one of a plurality of directions at one of a plurality of speeds, and determining the position of the energy beam based upon a received x-ray signal strength based on the x-ray signal time series and the model of the background x-ray intensity.

Multi-Spectral Method For Detection of Anomalies During Powder Bed Fusion Additive Manufacturing

Embodiments of the systems can be configured to receive electromagnetic emissions of a substrate (e.g., a build material of a part being made via additive manufacturing) by a detector (e.g., a multi-spectral sensor) and generate a ratio of the electromagnetic emissions to perform spectral analysis with a reduced dependence on location and orientation of a surface of the substrate relative to the multi-spectral sensor. The additive manufacturing process can involve use of a laser to generate a laser beam for fusion of the build material into the part. The system can be configured to set the multi-spectral sensor off-axis with respect to the laser (e.g., an optical path of the multi-spectral sensor is at an angle that is different than the angle of incidence of the laser beam). This can allow the multi-spectral sensor to collect spectral data simultaneously as the laser is used to build the part.

Three-dimensional modeling device

A three-dimensional modeling device includes a table supporting a powder material and a model created from the powder material, a processing section disposed so as to face the table and obtaining the model by processing the powder material, and a rotation unit causing the table to rotate relative to the processing section around a rotary axis. The processing section has a plurality of processing units disposed around the rotary axis. The processing units supply the powder material to the table, preheat the supplied powder material, and emit an energy beam to the preheated powder material.

MANUFACTURING DEVICE, METHOD AND COMPUTER PROGRAM PRODUCT FOR THE ADDITIVE MANUFACTURE OF COMPONENTS FROM A POWDER MATERIAL

A manufacturing device for additive manufacture of components includes a beam generation device configured to generate energy beams, a scanner device configured to locally and selectively irradiate a working region with the energy beams, a protective gas device configured to generate a protective gas flow over the working region, and a control device configured to drive the scanner device. The control device is configured to define a first irradiation region along which a first irradiation section is displaced from a first starting position to a first end position, to define a second irradiation region along which a second irradiation section is displaced from a second starting position to a second end position, and to begin irradiation of the second irradiation region when the first irradiation section and the second starting position are not arranged within an interaction zone defined by a protective gas flow direction relative to one another.

METHOD FOR PRODUCING A THREE-DIMENSIONAL COMPONENT

The invention relates to a method for producing a three-dimensional component by an electron-beam, laser-sintering or laser-melting process, in which the component is created by successively solidifying predetermined portions of individual layers of building material that can be solidified by being exposed to the effect of an electron-beam or laser-beam source (2) by melting on the building material, wherein thermographic data records are recorded during the production of the layers, respectively characterizing a temperature profile of at least certain portions of the respective layer, and the irradiation of the layers takes place by means of an electron beam or laser beam (3), which is controlled on the basis of the recorded thermographic data records in such a way that a largely homogeneous temperature profile is produced, wherein, to irradiate an upper layer, a focal point (4) of the electron beam or laser beam (3) is guided along a scanning path (17), which is chosen on the basis of ...

PRINTHEAD ASSEMBLY WITH LIGHT EMISSION DEVICES AND PHOTON DETECTORS

CALIBRATION OF SCANNING SYSTEMS

Additive manufacturing self-feedback monitoring system and method based on convolutional neural network

The invention discloses an additive manufacturing self-feedback monitoring system and method based on a convolutional neural network. The system is mainly composed of an additive manufacturing machine, a computer capable of operating the convolutional neural network, a high-precision microphone array, a wire rod and a support. In the printing process of the additive manufacturing machine, a high-precision piezoelectric microphone array placed in the machine is used for collecting sound signals in real time, and the signals are filtered to filter noise generated by the machine; feature information of the noise-reduced sound signals is extracted and provided for software which comprises a convolutional neural network and is built based on a Python program for real-time defect identification, and the identified defect information is processed and then fed back to an additive manufacturing machine for a series of instructions; and the machine receives an instruction to adjust printing parameters ...

Device and method for powder bed additive manufacturing of revolving body gradient material

The invention relates to the technical field of powder bed additive manufacturing, and provides a device and method for powder bed additive manufacturing of a revolving body gradient material. The device comprises a ring-shaped forming cylinder, a gradient powder supply and spreading unit, a forming unit and a control unit. The ring-shaped forming cylinder comprises an inner ring wall, an outer ring wall and a bottom wall and can vertically ascend and descend. The gradient powder supply and spreading unit is used for forming a powder layer with a set gradient in the radial direction and uniformly distributed in the circumferential direction in the forming cylinder; the gradient powder supply and spreading unit can rotate relative to the circular ring-shaped forming cylinder; the forming unit is used for sintering or bonding a set area of the laid powder layer; the control unit controls the whole device. The method comprises the steps of powder supplying, powder mixing, powder spreading ...

APPARATUS AND METHOD FOR MANUFACTURING A THREE-DIMENSIONAL MOULDED ARTICLE

The invention relates to an apparatus (100) and a method for manufacturing a three-dimensional moulded article (200) by means of material application in layers Sn (n=1 to N), said apparatus comprising at least one material delivery device (300), a drive device (410), a printing substrate (400), a control device (500) having a data memory (510), and a material removal device (700). According to the invention, a monitoring device (600) is provided so that defects in a layer Sn, which may also occur later, i.e. after completion of said layer Sn, are also detected and eliminated. Furthermore, a downstream evaluation device (610) detects a layer Sx in which the at least one defect was detected. Subsequently, a default signal is generated and forwarded to the control device (500). The material removal device (700) completely removes the material of a partial region (T) of the moulded article (200) starting from the most recently printed layer SN up to the first of the defective layers Sx. The ...

INSPECTION SYSTEM, INSPECTION METHOD, AND INSPECTION PROGRAM

An inspection system for a fabricated object formed by layering powder includes an acquisition unit that acquires an image of a surface of each of layers, an identification unit that identifies a defect portion (protruding portion or recessed portion) on the surface of the powder and a position of the defect portion based on the acquired image, and a determination unit that determines that an abnormality occurs when the defect portion successively occurs at a same position in the plurality of layers.

THREE-DIMENSIONAL ADDITIVE MANUFACTURING DEVICE, CONTROL METHOD, AND PROGRAM

A three-dimensional additive manufacturing device manufactures a layered structure by supplying powder for manufacturing the layered structure while changing the positional relationship between a discharge port from which the powder is discharged and the layered structure. The three-dimensional additive manufacturing device includes: a powder supply unit that supplies powder from the discharge port toward the layered structure; a light irradiation unit that irradiates the powder with a light beam to melt and harden the powder to thereby manufacture the layered structure; an imaging unit that captures an image of the manufacturing site where the layered structure is being manufactured; a distance detector that detects a distance from the manufacturing site to the powder supply unit on the basis of the image; and a feedback controller that adjusts a moving speed of the powder supply unit relative to the layered structure on the basis of a detection result of the distance.

Transport of powders

A powder container (10) comprising a pressure vessel (12) for containing a quantity of powder (14) and a quantity of pressurised gas (32), an outlet through which, in use, the powder (14) can flow out of the pressure vessel (12), and an outlet valve (24) for selectively opening and closing the outlet, wherein the container (10) further comprises a data sensing and/or logging means (56, 58, 60, 62, 64) adapted to monitor and/or log various parameters of the powder (14) and/or the pressurised gas (32) and further comprising a control unit (54) adapted record and log the sensor readings either continuously, or at intervals, the control unit (54) comprising a communications module adapted to relay sensor readings, or log files, to a remote monitoring station.

Rapid material development process for additive manufactured materials

A rapid material development process for a powder bed fusion additive manufacturing (PBF AM) process generally utilizes a computational fluid dynamics (CFD) simulation to facilitate selection of a simulated parameter set, which can then be used in a design of experiments (DOE) to generate an orthogonal parameter space to predict an ideal parameter set. The orthogonal parameter space defined by the DOE can then be used to generate a multitude of reduced volume build samples using PBF AM with varying laser or electron beam parameters and/or feedstock chemistries. The reduced volume build samples are mechanically characterized using high throughput techniques and analyzed to provide an optimal parameter set for a 3D article or a validation sample, which provides an increased understanding of the parameters and their independent and confounding effects on defects and microstructure. Additionally, machine learning techniques can be used to optimize for future parameter selection by modeling ...

SYSTEM AND METHOD FOR DETECTING AND REGULATING MICROSTRUCTURE ONLINE WITH ELECTROMAGNETIC ASSISTANCE

The invention belongs to the field of metal additive manufacturing, and specifically concerns a system and a method for detecting and regulating a microstructure online with an electromagnetic assistance. The system comprises a forming device (4), a detecting device (1), a regulating device and a substrate (10). The detecting device is connected with the regulating device, and the regulating device comprises an electromagnetic shock regulating unit (3) and/or an electromagnetic stirring regulating unit (5). In operation, a workpiece may be formed layer by layer on the substrate (10) by the forming device (4), while the detecting device (1) performs a real time detection of the microstructure in a formed area and transmits a detection result to the regulating device. According to the detection result, the electromagnetic shock regulating unit (3) may be used to perform an electromagnetic shock on a newly formed fused micro area (2), and/or the electromagnetic stirring regulating unit (5) ...

METHOD AND SYSTEM FOR OPERATING A METAL DROP EJECTING THREE-DIMENSIONAL (3D) OBJECT PRINTER TO COMPENSATE FOR DROP SIZE VARIATIONS

A method operates a three-dimensional (3D) metal object manufacturing system to compensate for displacement errors that occur during object formation. In the method, image data of a metal object being formed by the 3D metal object manufacturing system is generated prior to completion of the metal object and compared to original 3D object design data of the object to identify one or more displacement errors. For the displacement errors outside a predetermined difference range, the method modifies machine-ready instructions for forming metal object layers not yet formed to compensate for the identified displacement errors and operates the 3D metal object manufacturing system using the modified machine-ready instructions.

METHOD FOR CONTROLLING PLUME TRAJECTORIES IN ADDITIVE MANUFACTURING

SWEEP GAS SYSTEMS

TOOLING ASSEMBLY FOR MAGNETICALLY ALIGNING COMPONENTS IN AN ADDITIVE MANUFACTURING MACHINE

POWDER BED FUSION MONITORING

METHOD FOR PRODUCING A THREE-DIMENSIONAL OBJECT LAYER BY LAYER, WITH TARGETED ILLUMINATION OF GRAIN BOUNDARIES

The invention relates to a method for producing a three-dimensional object (102) layer by layer, comprising the following steps: step a) a new layer (105) of grains (201) of a metal material (109) is applied on a substrate (104), the grains (201) having a median particle size d50 = DM and an average layer thickness SD of the newly applied layer (105) being no more than 1.5*DM; step b) the topography of the substrate (104) is surveyed, including the position and shape of the individual grains (201) of the new layer (105); step c) an illumination plan for the new layer (105) is determined from the topography measured in Step b) and the desired shape of the three-dimensional object (102); step d) in accordance with the illumination plan, at least a part of the new layer (105) of grains (201) is illuminated locally with an electron beam (115), the electron beam (115) having a beam diameter ED at the surface of the substrate (104) where ED≤0.3*DM, wherein, at a respective grain (201), one or ...

DETECTION AND LOCATION OF POWDER SPREADING ANOMALIES USING ACOUSTIC EMISSION MEASUREMENTS

Device (100) for manufacturing a part using a method of selective fusion or selective sintering on a powder bed (103) comprising a build plate (101) having a working surface (102) parallel to a first direction (X) and to a second direction (Y), on which surface the part is intended to be manufactured, a wiper (110) which is placed on the working surface and capable of moving and spreading the powder in the first direction on the working surface, characterised in that it further comprises: - at least two acoustic sensors (121, 122) which are fixed and spaced in the second direction on the wiper and capable of detecting an acoustic signal; - a laser range finder (130) pointing in the first direction and capable of determining a position of the wiper in the first direction; and - a control system (140) capable of detecting an anomaly (150) on the basis of the acoustic signal and of determining a position of the anomaly on the basis of the acoustic signal detected by the acoustic sensors and ...

ROBOTIC POWDER BED CARTS AND COMPATIBLE PRINTER HOUSINGS FOR SLS THREE-DIMENSIONAL PRINTING

Multiple printer housings and powder bed carts may be coordinated to perform a variety of 3D printing operations. Printer housings may call for powder bed carts directly or through a control station. A requested powder bed cart may be dispatched from a stand-by area and may navigate to the requesting printer housing autonomously using its magnetic guide sensors to follow lines of magnetic tape on the floor. At the requesting printer housing, the powder bed cart may dock, move the powdered media trays and powder bed into position by elevating on its jack screws, and printing operations may commence. As the powder bed cart becomes depleted of powdered media, the powder bed cart may decouple from the printer housing and return to the stand-by area where the trays are refilled with powdered media, and its batteries are recharged.

Apparatus for producing an object by means of additive manufacturing

An apparatus for producing an object by additive manufacturing including a chamber for receiving a bath of material solidified by exposure to electromagnetic radiation, a support for positioning the object, and a solidifying device for solidifying a layer of the material. A registering device registers a characteristic of a calibration area related to the surface level of the bath of material and a control unit utilizes the characteristic to control the position of the emitted electromagnetic radiation.

Method for Rapid Development of Additive Manufacturing Parameter Set

An apparatus includes a control system that defines a test part having multiple features of multiple feature types. The control system controls an additive manufacturing (AM) machine to print multiple copies of the test part, with each copy being printed according to a respective set of values used as printing parameters. A measurement system obtains a computed tomography (CT) image of each of the copies of the test part. An analysis system, for each of the plurality of feature types, analyzes the CT images to identify a selected set of values for the printing parameters. The analysis system identifies a portion of the CT image related to a first feature and assesses its density based on an average grayscale value. The AM machine is then controlled to print production parts according to, for each feature type of the production parts, the selected set of values for the printing parameters.

IDENTIFICATION MARKER ON A 3D PRINTED COMPONENT

A system and method are described for post-processing a 3D printed component. For example, support structures for the 3D printed component may be removed during post-processing. In the system and method, a marker is placed on the 3D printed component or on a support structure attached to the 3D printed component. The marker may be printed while the 3D printed component and the support structures are printed by a 3D printer. After printing, the marker may then be sensed to determine one or more cutting paths between the 3D printed component and the support structures. The 3D printed component may then be autonomously separated from the support structures by cutting through the cutting path.

MEASUREMENT SYSTEM FOR A DEVICE FOR GENERATIVELY PRODUCING A THREE-DIMENSIONAL OBJECT

Numerische Steuerung und Verfahren zum Steuern einer additiven Herstellungsvorrichtung

Eine NC-Vorrichtung (1), die eine numerische Steuerung (1), umfasst: eine Programmanalyseeinheit (23), die ein Bearbeitungsprogramm (20) analysiert, um einen Bewegungspfad zu erhalten, entlang dessen eine Zufuhrposition eines Materials auf einem Werkstück zu bewegen ist; eine Lagertemperaturextraktionseinheit (24), die aus Daten über Oberflächentemperatur des Werkstücks Lagertemperatur in einem Bereich extrahiert, der den Bewegungspfad auf dem Werkstück enthält; eine Schichtungsvolumenberechnungseinheit (25), die ein Volumen einer Schicht, die das Objekt bildet, auf der Grundlage einer Beziehung zwischen der Lagertemperatur und einem Volumen des Materials berechnet, das sich bei der Lagertemperatur in einer gegebenen Zeit verfestigt; und eine Schichtungsformänderungseinheit (26), die eine Form der Schicht auf der Grundlage des Volumens der Schicht ändert.

ADDITIVE MANUFACTURING APPARATUSES AND METHODS FOR OPERATING THE SAME

An additive manufacturing apparatus includes a process chamber having a length, a support extending along the length of the process chamber, a printing assembly, a vision system configured to image a dispensed binder pattern, and an electronic control unit communicatively coupled to the printing assembly, the first actuator, and the vision system. The electronic control unit is configured to cause the printing assembly to traverse the build zone in a forward or reverse direction while dispensing binder according to a programmed deposition pattern, receive image data from the vision system of the dispensed binder pattern resulting from the programmed deposition pattern, analyze the image data to determine whether there is an anomaly in the dispensed binder pattern, and in response to determining the anomaly in the dispensed binder pattern, adjust the programmed deposition pattern for a subsequent traversal of the printing assembly over the build zone to address the anomaly.

IMAGE-CAPTURING APPARATUS, KIT AND METHOD FOR CALIBRATING AN ADDITIVE MANUFACTURING APPARATUS

The invention relates to a removable image-capturing apparatus (200) comprising an aperture (202) intended to receive a calibration plate (10) bearing a reference marking (30) and potentially a test marking (40). According to the invention, the apparatus (200) comprises a backlighting source (204) emitting light in the visible range and located under the aperture (202), a sensor (205) for acquiring an image of the plate (10) backlit with visible light, a guiding and holding device (206) for positioning the sensor (205) above the aperture (202) with respect to the frame (201), a computer (207) configured to analyse the image, recognise the marking (30) and potentially the marking (40) in the image and compute targeting-command corrections intended for a system for firing an incident beam of radiant power from an additive manufacturing apparatus, which is separate and distinct from the apparatus (200).