Casting core for the manufacture of hollow metal aeronautical parts, in particular high-pressure turbine parts by lost-wax casting, including a composite material including on the one hand a first phase of formula M.sub.n+1AlC.sub.n, where n=1 to 3 and M being a transition metal selected from the group consisting of titanium and/or niobium and/or molybdenum, the composite material including on the other hand a second phase of formula Al.sub.4C.sub.3.

Casting core for the manufacture of hollow metal aeronautical parts, in particular high-pressure turbine parts by lost-wax casting, including a composite material including on the one hand a first phase of formula M.sub.n+1AlC.sub.n, where n=1 to 3 and M being a transition metal selected from the group consisting of titanium and/or niobium and/or molybdenum, the composite material including on the other hand a second phase of formula Al.sub.4C.sub.3.

Molding core for manufacturing an OMC hollow aeronautical part, in particular a fan module part, including a composite material including on the one hand a first phase of formula M.sub.n+1AlC.sub.n, where n=1 to 3, and M being a transition metal selected from the group consisting of titanium, niobium, chromium or zirconium, the composite material including on the other hand a second phase of formula Al.sub.4C.sub.3

Provided herein are a saltcore for casting with aluminum and a manufacturing method thereof, and more particularly, a saltcore and a manufacturing method thereof capable of reducing shrinkage while satisfying strength during die-casting by including at least one cation of K.sup.+, Na.sup.+ and Mg.sup.2+ and at least one anion of Cl.sup.? and C0.sub.3.sup.2?, wherein a saltcore for casting with aluminum may include at least one cation of K.sup.+, Na.sup.+ and Mg.sup.2+ and at least one anion of Cl.sup.? and C0.sub.3.sup.2?.

The present invention relates to lightweight fine ceramic particulates, directly obtained from fly ash, their use in different technical fields and building material compositions comprising the same.

Lightweight fine ceramic particulates, especially sintered synthetic sand, as disclosed herein are characterized in that the grading of the particulates is as follows:

TABLE-US-00001 Sieve size (mm) 2 1 0.5 0.25 Passing (mass-%) >98 55 to 80 30 to 45 2 to 4

Disclosed is further the use of lightweight fine ceramic particulates according to the invention as aggregate for construction purposes, especially in combination with fly ash.

Lightweight fine ceramic particulates according to the invention are further used as additive in paint or coating formulations, as foundry sand, additive for waste water treatment, substrate for horticultural purposes, for hydroponic gardening, for green roofing purposes or for applications in geotechnics.

Disclosed are also building material compositions in form of mortar or concrete, comprising the lightweight fine ceramic particulates according to the invention.

The lightweight fine ceramic particulates according to the invention, and especially the building material compositions derived from them, are advantageous in respect to superior quality and workability, sound insulation and sustainability from internal curing.

A method of manufacturing a core for molding a blade of a turbomachine, including placing a flexible ceramic sheet in a cavity of a mold in such a way as to shape the ceramic sheet, introducing a ceramic paste into the cavity of the mold, the ceramic paste forming at least one frame in contact with the ceramic sheet, and co-sintering the ceramic sheet and the frame in such a way as to rigidly join together the ceramic sheet and the frame, the frame maintaining the shape of the ceramic sheet given by the mold during the preceding co-sintering phases.

A method of manufacturing a core for molding a blade of a turbomachine, including placing a flexible ceramic sheet in a cavity of a mold in such a way as to shape the ceramic sheet, introducing a ceramic paste into the cavity of the mold, the ceramic paste forming at least one frame in contact with the ceramic sheet, and co-sintering the ceramic sheet and the frame in such a way as to rigidly join together the ceramic sheet and the frame, the frame maintaining the shape of the ceramic sheet given by the mold during the preceding co-sintering phases.

A metal casting system includes a cope mold portion, a drag mold portion, and a mold cavity. The cope mold portion comprises internal cope mold walls. The drag mold portion comprises internal drag mold walls. The cope mold portion and the drag mold portion comprise a molding material comprising a plurality of metal particles.

The mold cavity is representative of a mold pattern, wherein the internal cope mold walls and the internal drag mold walls define, at least in part, the perimeter of the mold cavity.

A harmless treatment and regeneration device and method thereof of waste liquid discharge from failed hardener solution during hardening of water glass mold shell via ammonium chloride solution are provided. The device includes a waste liquid storage tank, a filtering mechanism, a regeneration mechanism, and a regeneration liquid storage tank. A fluid outlet end of the waste liquid storage tank is in fluid communication with a fluid inlet end of the filtering mechanism, a fluid outlet end of the filtering mechanism is in fluid communication with a fluid inlet end of the regeneration mechanism, and a fluid outlet end of the regeneration mechanism is in fluid communication with a fluid inlet end of the regeneration liquid storage tank.

A harmless treatment and regeneration device and method thereof of waste liquid discharge from failed hardener solution during hardening of water glass mold shell via ammonium chloride solution are provided. The device includes a waste liquid storage tank, a filtering mechanism, a regeneration mechanism, and a regeneration liquid storage tank. A fluid outlet end of the waste liquid storage tank is in fluid communication with a fluid inlet end of the filtering mechanism, a fluid outlet end of the filtering mechanism is in fluid communication with a fluid inlet end of the regeneration mechanism, and a fluid outlet end of the regeneration mechanism is in fluid communication with a fluid inlet end of the regeneration liquid storage tank.