A method for preparation of a mold (10) intended to form a slab from a mixture of agglomerate comprising the steps of depositing over the mold surfaces a sheet (15) of PVA-based plastic material so as to form with it a surface for subsequent contact with the mixture introduced into the mold for forming the slab, whereby in at least some areas a layer (14) of a fluid agent containing PVA in a solution is interposed between the sheet (15) and the mold surfaces. A plant for carrying out the method and a method for production of a slab are also described.

A method for making a ceramic heat sink is provided. In the first step of the method, a mixed material of nitrite-based ceramic powder, titanium powder and inorganic resin is prepared. The mixed material is then molded into a ceramic blank with a mold coated with titanium. Thereafter, the ceramic blank may be sintered to form the ceramic heat sink. Since the mixture and the mold both contain a common material of titanium, the molded ceramic blank can be easily removed from the mold in its integrity.

A wax pattern surface-treating agent includes a solvent, boron nitride, and at least one surfactant selected from a group consisting of an anionic surfactant, a cationic surfactant, a non-ionic surfactant, and an amphoteric surfactant.

A manufacturing method of a big-model low-permeability microcrack core includes: (1) determining the size of a microcrack core to be manufactured; (2) placing stones in a baking oven to bake for 24 h under 120 C., placing the stones into a mixer, mixing and spraying oil, enabling the oil to seep into the stone, evenly forming a thin oil film on stone's surface; (3) mixing the oil sprayed stone with quartz sand and cement, adding water to mix evenly to obtain cement paste; (4) spreading butter on core mould's inner surface to form a thin butter film, pouring the cement paste into the core mould to obtain a cement sample; (5) loading confining pressure outside the core according to the requirements of porosity and permeability of the mould to adjust a pore permeability value; (6) obtaining the big-model core with microcrack after the cement sample is dried and formed.

A method for making a ceramic heat sink is provided. In the first step of the method, a mixed material of nitrite-based ceramic powder, titanium powder and inorganic resin is prepared. The mixed material is then molded into a ceramic blank with a mold coated with titanium. Thereafter, the ceramic blank may be sintered to form the ceramic heat sink. Since the mixture and the mold both contain a common material of titanium, the molded ceramic blank can be easily removed from the mold in its integrity.

A production method of pseudo-wood and pseudo-stone furniture or ornament material with natural grains has a characteristic in that, the magnesia, the magnesium chloride, the water and the glass fiber are used to function as the primary staple. Then, a determined amount of modifier, sawdust powder and talcum powder is added into the primary staple. Then, the mold and the framework are operated according to the determined steps. Then, the primary staple is shaped. Then, the primary staple performs an oxidation process to form the product. Thus, the product is directly manufactured by the mold, without needing multiple and complicated working steps.

Surface retarder coating compositions of the invention are based on the use of at least one non-Ordinary Portland Cement (non-OPC) binder and at least one OPC set retarder agent, which are provided in powder form that can be mixed with water at the construction site. The coating is applied onto the surface of a mould or formwork using roller or spray equipment, and concrete can then be cast within 30-60 minutes against the coating. The OPC set-retarding agent operates to retard setting of the concrete so that it can be de-moulded the next day and its surface can be removed using a high pressure water spray to reveal aggregate embedded beneath the removed surface.

A mold (10) intended to form a slab from a mixture of agglomerate, a sheet (15) of PVA-based plastic material deposited over the mold surfaces so as to form with it a surface for subsequent contact with the mixture introduced into the mold for forming the slab, whereby in at least some areas a layer (14) of a fluid agent containing PVA in a solution is interposed between the sheet (15) and the mold surfaces. A system involving a plant and mold are also described.

A method of forming a bladder cast ceramic matrix composite (CMC) article including infiltrating a CMC substrate positioned in a cavity of a mold body with a slurry. The CMC substrate includes reinforcement material defining inner spaces. The slurry includes solid particles and a carrier material. During infiltration, the slurry at least partially fills at least a portion of the inner spaces of the CMC substrate. The method also includes inflating at least one bladder that is coupled to the mold body and disposed within the cavity such that a surface of the at least one bladder in an inflated configuration contacts at least one surface of the CMC substrate. The method also includes drying the slurry to remove at least a portion of the carrier material form an infiltrated CMC and deflating the at least one bladder.

There is provided a method for forming a pattern or a shape in a concrete wall structure, the method comprising: mixing a cement about 100% by weight and silicon about 50% by weight to form a mixed silicon; inserting the mixed silicon into a forming frame; pressing a pressing member onto the first surface and removing the pressing member from the first surface; attaching the forming frame onto the form; placing and curing a concrete to the surface of the mixed silicon in which the shape or pattern is defined; and removing the mixed silicon from the cured concrete, thereby to obtain a concrete wall structure having the three-dimensional pattern or shape formed therein.