Disclosed is a method for manufacturing a sintered body by sintering with laser irradiation, the method for manufacturing a sintered body, including: a raw material providing step of providing a raw material containing a ceramic powder and a laser absorbing oxide having an absorption rate at a laser wavelength higher by 5% or more than that of the ceramic powder; an article forming step of forming an article formed from the raw material, an article partially including a region consisting of only the raw material, or an article formed from the raw material and formed on a base material; and a sintering step of irradiating the article with a laser to form a sintered portion.

A plant for producing a concrete prefabricated component includes a plurality of stations, a transport system to transport the production pallet through the plant, and a 3D printing station having a layer depositing device for depositing a particulate aggregate on the production pallet and having a printing head for controlled delivery of a water-binder mixture. The plant also includes a storage device to store particulate aggregate, a conveying device to convey the particulate aggregate to the layer depositing device of the 3D printing station, a mixing device for mixing the water-binder mixture, a feed device to feed the water-binder mixture to the printing head, and an unpacking station in which a concrete prefabricated component printed in the 3D printing station on the production pallet can be unpacked from an unbound particulate aggregate.

A method for producing a prefabricated 3D-printed part includes depositing a layer of a particulate aggregate on a production panel by a layer-depositing device; and dispensing a predetermined dose of a binder or a water/binder mixture, comprising water and at least one hydraulic binder, onto a locally predetermined region of the layer of the aggregate by a printhead. At least one reinforcement is arranged by a reinforcement-depositing device, at least in some regions, on and/or in the locally predetermined region on which the predetermined dose of the binder or the water/binder mixture was dispensed during the course of the second method step.

A device for forming 3D bodies, in particular pieces of furniture, by additive material application. In particular, the device has a support, on which the volume body is formed, an application unit, for building up the 3D body on the support by additive application of material, and a tool carrier with a tool holder, in which the application unit is mounted. The tool carrier is in this case designed in such a way that the application unit mounted in the tool holder can be aligned in five directions by moving the tool holder with respect to the support.

Methods of additively manufacturing a three-dimensional object by one or more energy beams include selectively directing a first energy beam across a powder bed along a plurality of first hatching paths and a first contour path that defines a first outer contour portion and a first stitching portion, wherein the first outer contour portion at least partially defines a first edge portion of an outer edge of the three-dimensional object, and wherein the first edge portion is non-linear; and selectively directing a second energy beam across the powder bed along a plurality of second hatching paths and a second contour path that at least partially defines a second edge portion of the outer edge of the three-dimensional object, wherein the second edge portion is adjacent the first edge portion, and wherein the first stitching portion extends into the plurality of second hatching paths along a non-linear stitching path.

Disclosed is a method for manufacturing a green piece made of ceramic material by the technique of additive manufacturing according to which layers of a photocurable paste are successively allowed to cure by irradiation according to a pattern defined for each layer, the first layer being formed on a working surface on a working tray, each layer, before curing, being spread by scraping a paste mass provided on the working tray, which is lowered upon each formation of a layer. According to the disclosure, when spreading at least one of the photocurable paste layers, at least one scraping blade in working position, in addition to its scraping motion or so-called pass motion, is allowed to go back and forth in its plane, according to a so-called vibration motion.

A method of forming a structure comprising a continuous fiber material comprises continuously feeding, through a continuous fiber nozzle assembly of an additive manufacturing tool, a feed material comprising a continuous fiber material and a thermoset resin material, heating or cooling the feed material to maintain a temperature of the feed material to a temperature sufficient to tackify the feed material and at least partially cure the feed material and initiate adhesion of the feed material on a build platform or a previously formed portion of a structure, and moving the continuous fiber nozzle assembly in three dimensions while depositing the feed material on the build platform or the previously formed portion of the structure to form the structure comprising the continuous fiber material extending in three dimensions. Related methods of forming a composite structure, and related tools for additively manufacturing a structure are disclosed.

The present invention relates to an apparatus and method for three-dimensionally laminating a ceramic denture in a color-and-transmittance variable manner. A base slurry and a light transmissive slurry are mixed at a ratio regulated by a main controller according to a slurry ratio parameter datum, and then a slurry mixture is laid on a substrate by a laying module to form a slurry layer; next, the slurry layer is photocured by a photocuring module according to a laminated graphic under control of the main controller; in such a manner, the slurry layers are laminated and cured one by one so that a denture green body is formed; finally, the denture green body is sintered at a high temperature to form a ceramic denture. The present invention allows each slurry layer to exhibit different color and transmittance, resulting in quite natural gradation of color and gradation of transmittance.

A geopolymeric ink formulation for direct 3D printing containing a geopolymeric formulation whose components are present in such proportions as to be subjected to a geopolymerization reaction and to provide, at the end of the reaction, a solid geopolymer and wherein the formulation, before and during at least a part of the geopolymerization reaction, wherein three-dimensional chemical bonds have not yet been formed, forms a reversible-gel, non-Newtonian, viscoelastic fluid. The formulation is extruded through a 3D printing tool equipped with nozzle into strands according to a geometry such as to create a three-dimensional structure on one or more layers. The extrusion preferably takes place within a hydrophobic liquid, such as oil.

An additive manufacturing apparatus includes a housing which provides a manufacturing space for additive manufacturing, a linear drive arranged in the manufacturing space and having a base body, which is movable along a movement axis of the linear drive in the manufacturing space, and a tool holder for taking up a tool unit. The tool holder is attached to the base body so as to be rotatable about a rotation axis and is moved with the base body along the movement axis of the linear drive. The tool holder further comprises a clamping device having an unclamped operating state for taking up and taking out the tool unit and a clamped operating state for fixing the received tool unit. Furthermore, the additive manufacturing apparatus has a tool store, which is arranged in the manufacturing space and provides a plurality of tool places for tool units.