The invention relates to a method for powder pressing at least two pressed parts, in particular ceramic powder pressed parts and/or metal powder pressed parts, wherein a first powder (17) for pressing a first pressed part is filled into a first cavity (13) of a die (12) with a first filling level and a second powder (18) for pressing a second pressed part is filled into a second cavity (14) of the die (12) with a second filling level, wherein the first and second filling levels are individually adjusted. Preferably, the first powder is filled via a first filling shoe and the second powder is filled via a second filling shoe, wherein the two filling shoes, at least temporarily, are not moved simultaneously. A powder pressing device is also claimed which is suitable for implementing the aforementioned method.

In a method for additive manufacturing of a workpiece, a data set defines the workpiece in multiple layers. A first energy beam is moved relative to a manufacturing platform along first trajectories to produce, in temporally successive steps, a stack of workpiece layers. Individual properties of the stack are determined using a measurement arrangement having an exciter that excites the stack with a second energy beam, and having a detector that detects properties of the stack resulting from an excitation along a defined detection path in a spatially resolved manner. At least one of the second energy beam and the detection path is moved relative to the manufacturing platform along further trajectories using a further scanning unit. The first scanning unit and the further scanning unit establish completely separate beam paths for the first energy beam and the at least one of the second energy beam and the detection path.

The invention is a machine for producing decorative aggregate G-layer on top surfaces of claddings in cooperation with a cladding manufacturing machine. The G-layer production machine may be integrated into the cladding manufacturing machine or a standalone machine. In both options, the machines synchronize the overlaying of the top G-layer with the manufacturing process of the claddings to ensure continuous production of multi-layer claddings with a decorative aggregate layer. The overlaying itself is done under controlled condition to produce homogenous distribution of the aggregates on the top surface of the claddings to provide them an aesthetic look.

Disclosed are methods and systems for optimizing printing of a ceramic isolation layer. In some embodiments, the method includes the following steps: preparing a workpiece before printing; printing the workpiece by an optimal printing solution, the optimal printing solution satisfying a setting of key data when printing the ceramic isolation layer; and processing the workpiece after printing to obtain a finished workpiece. In other embodiments, the optimal printing solution is determined by the following steps: printing and processing the ceramic isolation layer and the workpiece isolated by the ceramic isolation layer for multiple times; adjusting the key data by determining a strength of the ceramic isolation layer after printing and deformation data of the workpiece; selecting the ceramic isolation layer parameters and the printing parameters; and taking the setting of the key data as the optimal solution when the deformation data reaches a preset threshold.

A screeding machine includes a base unit positionable at framework that defines a concrete structure and a screed head assembly movably mounted at the base via an extendable and retractable mechanism. The screed head assembly includes a grade establishing member, a vibrating member, and elevation actuators for adjusting elevation of the screed head assembly. The screed head assembly is positioned at a screeding location via extension of the extendable and retractable mechanism and is movable over the uncured concrete in a screeding direction via retraction of the extendable and retractable mechanism. Adjustable wings disposed at and in front of the grade establishing member in the screeding direction are movable along the grade establishing member. When one of the ends of the screed head assembly is positioned at a frame portion, the wing at that end of the screed head assembly is moved to position the wing at the frame portion.

Example implementations relate to controlling the application of layers of build material in 3D printing. One example implementation determines a temperature at a predetermined location of a layer of build material following fusing according to an object model, where the predetermined location is dependent on the object model. The application of a new layer of build material is controlled dependent on the determined temperature.

A cementitious print head and a cementitious printing methodology may include a feed barrel, a print head nozzle, a CO.sub.2 supply, a steam supply, a selective valve assembly in communication with the CO.sub.2 supply and the steam supply, a plurality of dual use extrusion head injectors, and a print head controller. The print head controller is operatively coupled to the selective valve assembly and is programmed to execute a CO.sub.2 and steam injection protocol where steam may be selected for injection by the extrusion head injectors into a cementitious composition as it is extruded from the print head nozzle to enhance a hydration reaction and formation of hydroxide in the cementitious composition before CO.sub.2 may be selected for injection by the extrusion head injectors into the cementitious composition as it is extruded from the print head nozzle to enhance a carbonation reaction in the cementitious composition.

Three-dimensional (3D) printing may be described as an additive manufacturing process for generating 3D components. A 3D model may be used by a 3D printer to print the 3D component. In 3D printing, successive layers of material may be utilized to generate the 3D component. As part of the 3D printing process, the 3D component may be subjected to sintering. In some cases, the sintering may be accomplished by subjecting the 3D component to a heat source, or other types of processes.

According to examples, an apparatus may include an array of micro-mirrors, each of the micro-mirrors being individually controllable to selectively be in a first position or a second position, and a light source to direct a pulse of light onto the array of micro-mirrors with sufficient intensity to cause micron-sized particles on a powder bed upon which the light is directed from the array of micro-mirrors to at least partially melt. Each of the micro-mirrors that is in the first position may reflect light onto a respective area on a layer of micron-sized particles to at least partially melt the micron-sized particles in the respective area and each of the micro-mirrors that is in the second position may reflect light away from the powder bed on which the micron-sized particles are supported.

Mold lock is remediated by performing a layer-by-layer, two-dimensional analysis to identify unconstrained removal paths for any support structure or material within each two-dimensional layer, and then ensuring that aligned draw paths are present for all adjacent layers, all as more specifically described herein. Where locking conditions are identified, a sequence of modification rules are then applied, such as by breaking support structures into multiple, independently removable pieces. By addressing mold lock as a series of interrelated two-dimensional geometric problems, and reserving three-dimensional remediation strategies for more challenging, complex mold lock conditions, substantial advantages can accrue in terms of computational speed and efficiency.