A method of forming a ceramic matrix composite component with cooling channels includes embedding a plurality of wires into a preform structure, densifying the preform structure with embedded wires, and removing the plurality of wires to create a plurality of corresponding channels within the densified structure.

A method for manufacturing a prefabricated concrete product is disclosed, in which method, a concrete slab with a recess at its upper surface is cast with slipform casting on a casting bed, and after the slipform casting of the slab the recess of the fresh cast slab is equipped with ducts, piping and/or wiring components, after which the recess is covered with concrete mass, and the concrete product is left to cure. The invention also relates to such a prefabricated concrete product.

A component for a gas turbine engine including a core and an outer enclosure. The core includes an exterior surface extending along a length between a first end and a second end and at least partially defines a cooling cavity on the exterior surface extending from the first end along at least a portion of the length. The cooling cavity is fluidly coupled to an air supply at the first end. The outer enclosure includes an outer surface. The outer enclosure is positioned outside the core and extends from the first end of the core along at least a portion of the length of the core and at least partially defines the cooling cavity.

An apparatus including a tool device configured to be used in the manufacturing of engineered stone slabs. The tool device may be configured to travel in an x-y plane in order to create a physically disrupted region in a mixture of resin and aggregate minerals. The tool device may have a mechanism configured to vary a width of the physically disrupted region of the mixture while traveling in the x-y plane. The apparatus may further include a spray device, which is configured to deposit colorant in an area in a wake of travel of the tool device in the x-y plane. The spray device may be configured to deposit colorant in an area while the physically disrupted region is being created in the area. The tool device may be a carving device with a V-shaped component. The tool device may be a stirring device having one or more prongs.

A ceramic part and methods for making the ceramic part are disclosed. A green body or non-sintered part may be formed using a casting or molding process. The green body may not be sintered or may be partially sintered before machining one or more features into a surface of the green body. After machining, the component may be fully sintered to create a hardened ceramic component.

Described herein is a system and method to produce a taper on a drywall board to facilitate taping and compounding where two boards abut. A groove is formed on the back side of a drywall board, resulting in a first gypsum-containing segment hingeably connected to a second gypsum-containing segment. A taper is created by rotating the segments until they meet, and then removing excess material.

As an elongated laminate of paper faced gypsum being produced into drywall boards is advanced along a conveyor to a point at which the gypsum is dried to a water content such that the laminate can be embossed by an embossing roller which can be pressed into the laminate for a sufficient time and depth to form a embossed channel which is about the lateral width of a piece of drywall tape which would be used to tape the ends of two separate abutting drywall pieces when being hung and taped, and a depth sufficient to accommodate a strip of drywall tape within said embossed channel. The embossing step is done on the underside of said advancing laminate at a distance from a shear used for shearing the laminate into pieces of drywall, that the center line of the embossed channel bottom wall formed by said embossing roller is located the distance the advancing laminate has to travel to shear the individual drywall pieces being produced to a desired length, or a multiple thereof.

A pressing assembly (10) and a method for forming a depression (105) within a moving, wet gypsum board (100) is disclosed. The assembly comprises a pressing head (16) comprising a pressing surface which is arranged to contact the board, and a support member (17), the pressing head (16) being arranged to compress a portion of the board between the pressing surface and the support member (17) to form a depression (105) within the board (10). The pressing surface comprises a first and second surface portion (24, 25) separated by a relief portion (27), which is arranged to press the board (100) toward the support head (17) with less compressive force than the first and second surface portion (24, 25). The assembly further comprises drive means (18, 19, 22) for moving the pressing head and the support member in a first direction which substantially corresponds with the direction of the moving board, and a second direction which is substantially perpendicular to a plane of the board, while the speed of the pressing assembly in the first direction substantially matches the speed of the board.

Method and facility or apparatus for cutting a slipform cast hollow-core concrete product with water jet cutting, wherein in the outer surface of the fresh cast hollow-core concrete product is formed depressions or grooves in the areas to be cut with water jet cutting before curing of the hollow-core concrete product, which depressions or grooves extend in the area of the hollow-cores of the concrete product.

The aim of the invention is to provide a concrete printer which allows complex concrete elements and structures to be erected within a short time with the inclusion of a reinforcement and surfacing process. The concrete printer according to the invention, in particular for producing concrete elements and structures, has a vertically (Z) movable jack lift (6) which can be moved on two perpendicular rails (3) by a first drive unit (5). The jack lift (6) is connected to a longitudinal crossbeam (7) oriented horizontally in the longitudinal direction (X), and the longitudinal crossbeam (7) is connected to two guide rails (8) oriented in the longitudinal direction (X). A transverse crossbeam (9) which is oriented perpendicularly to the longitudinal crossbeam (7) can be moved along the guide rails (8) by a second drive unit (10), and at least one working head (13) is provided which can be moved along the transverse crossbeam (9), comprises at least one concrete printing nozzle (11), and can be moved by a third drive unit (12). The actuation of all the drive units (4, 5, 10, 12) and the concrete printing nozzles (11, 11a, 11b) is carried out by a control unit (41). In the method according to the invention, supporting concrete (18) is first cast or dispensed from a supporting concrete nozzle (11a) for an outer contour (18) and/or an inner contour (18). Reinforcement rods (31) are then optionally inserted, and the intermediate spaces (47) between the supporting concrete portions (18) and optional reinforcement rods (31) are then cast with liquid concrete (19) from the liquid concrete nozzle (11b).