A method for infiltrating a porous preform for a gas turbine engine is provided, which comprises providing a chamber for infiltrating a porous preform. The porous preform is positioned within a slurry confinement fixture within the chamber. A vacuum is created in the chamber. A solvent is added to the slurry confinement fixture until a pressure in the chamber is substantially equal to an equilibrium partial pressure of the solvent. A slurry is added to the slurry confinement fixture. The slurry includes the solvent and a particulate. The pressure in the chamber is increased, and the slurry is urged into the porous preform.

An alumina ceramic integrated hot press molding machine and working method thereof, including a pressing and hot pressing device fixed accordingly on a rack, a stirring device inside the hot pressing device, and a hot pressing mold above the hot pressing device; the pressing device enables one path of high-pressure air to act on the mold, and enables the other path to enter the hot pressing device, so the slurry flows into a cavity of the mold; the stirring device stirs the slurry inside the device, so alumina blanks are more evenly distributed therein; and temperature detection components for detecting the temperature of internal oil and the slurry at a slurry outlet are inside the hot pressing device, and the power of an electric heating device is adjusted and controlled in real time according to the temperature detected by the components, to achieve the purpose of accurate temperature control.

An extruder includes a receptacle for containing material to be extruded. The extruder further includes a dispersion blade positioned within the receptacle and a nozzle secured to the receptacle. The nozzle defines a first opening positioned within an interior of the receptacle, defines a second opening positioned outside of the receptacle and defines a channel which extends from the first opening through the nozzle to the second opening defining a flow path which extends from the first opening, through the channel and to the second opening. The nozzle extends through a wall of the receptacle and into the interior of the receptacle such that the first opening is positioned spaced apart from the wall.

Disclosed is a method for producing a plate, wherein liquid, ultra-high-strength concrete is introduced into a formwork, which delimits a cavity, the cavity consisting of a first, flat region and a second, flat region adjoining the first region, the first and second regions having the same depth and being inclined with respect to one another at a bend angle of 120° to 170°. The concrete is introduced, in particular pumped, into the formwork from the bottom, rises in the formwork and hardens in the formwork in the shape of a bent plate.

A method for infiltrating a porous preform for a gas turbine engine is provided, which comprises providing a chamber for infiltrating a porous preform. The porous preform is positioned within a slurry confinement fixture within the chamber. A vacuum is created in the chamber. A solvent is added to the slurry confinement fixture until a pressure in the chamber is substantially equal to an equilibrium partial pressure of the solvent. A slurry is added to the slurry confinement fixture. The slurry includes the solvent and a particulate. The pressure in the chamber is increased, and the slurry is urged into the porous preform.

The present disclosure relates to a method of forming a waffle slab with concrete surfaces that do not require polishing, the method comprising: providing steel molds connected to each other, and forming a space in the steel molds, wherein at least one of the steel molds has a hole; disposing a plurality of inner molds in the space formed by the steel molds; disposing predetermined steel bar cages between the plurality of inner molds, and between the plurality of inner molds and the steel molds; disposing a steel plate on top surfaces of the steel molds, wherein the steel plate comprises separate air holes; and pouring a Self-Compacting Concrete (SCC) into the space from the hole of the at least one of the steel molds such that the SCC fills the space to form the waffle slab.

A method of manufacturing an artificial stone slab with veins comprises preparing a moldable hardenable fluid mixture of a first material (11); pouring the mixture into a mold (20) an upper face being exposed; engraving the exposed upper face with a predefined precise pattern of grooves (30) coinciding with a pattern of thin veins to be obtained; impregnating at least the inner faces (31) of the grooves (30) with a moldable hardenable fluid mixture of a second material (12), the color of both materials being different; causing the collapse and closure of the grooves, a visible pattern of thin veins of a second material with a natural look being left behind; curing the artificial stone slab by subjecting it to vibration, compression and vacuum until the fluid mixtures of the first material and of the second material are hardened.

A method for manufacturing a part made of composite material includes injecting into a fibrous texture a slurry including at least one powder of refractory ceramic particles suspended in a liquid phase, filtering the liquid phase of the slurry and retaining the powder of refractory ceramic particles inside the texture so as to obtain a fibrous preform loaded with refractory ceramic particles, densifying the fibrous texture by treatment of the refractory ceramic particles present in the fibrous texture in order to form a refractory matrix in the texture. The method further includes, before injecting the slurry under pressure, pre-saturating the fibrous texture with a carrier fluid consisting in injecting into said texture a carrier fluid.

Station for the realization of coloring effects in a mix for the production of slabs, includes: a working surface intended to accommodate a temporary support with a basic mix layer for the formation of a slab; at least one dye dispensing device for emitting dyes towards the working surface so as to deposit them on the basic mix layer on the temporary support accommodated on the working surface; movement means for the relative movement of the dispensing device above the working surface; a control system connected to the movement means for controlling the displacement of the dispensing device so as to follow trajectories along which dyes are emitted towards the mix layer; at least one tool movable with the movement means (18, 118) and intended to interact mechanically with areas of the mix layer for receipt of the dyes emitted by the dispensing device to achieve coloring effects in the mix.

The present invention relates to a self-pouring mold system which ensures uniformity of a material by laterally pouring concrete into a mold installed on a side of a wall structure and minimizing a fall head generated when the concrete is poured to prevent bleeding, thereby ensuring uniformity of a fire-proofing material and adjusting a required fire-proofing coating thickness, and a method of fire-proofing, repairing, and reinforcing using the same.