The present disclosure discloses a shell mold chamber, a foundry furnace and a method for casting single crystal, fine crystal and non-crystal, which employ the technique of asynchronous-curving supercooling, and belongs to the technical field of precise casting apparatuses. Such a three-function foundry furnace includes a heating coil winding, a first thermal-shield assembly, a first superconducting coil, a second thermal-shield assembly and a second superconducting coil; and the first superconducting coil is provided at an inside of the first thermal-shield assembly, and the second superconducting coil is provided at an inside of the second thermal-shield assembly; and directions of a magnetic field generated by the first superconducting coil and a magnetic field generated by the second superconducting coil are opposite; and the first superconducting coil and the heating coil winding form a forward-directional static-magnetic-field heating zone, and the second superconducting coil forms a reverse-directional static-magnetic-field zone.

Electromagnetic stirring device in a mould for casting aluminium or aluminium alloys, wherein the electromagnetic stirring device has a winding core of conductive coils intended for the circulation of a current generating an electromagnetic field of stirring of the molten metal inside the mould. A mould, casting machine and casting plant provided with such an electromagnetic stirring device are also provided. A stirring method in a mould for casting aluminium or aluminium alloys is disclosed, including a phase of supply of phase-shifted currents on an electromagnetic stirring device in a mould.

Electromagnetic stirring device in a mould for casting aluminium or aluminium alloys, wherein the electromagnetic stirring device has a winding core of conductive coils intended for the circulation of a current generating an electromagnetic field of stirring of the molten metal inside the mould. A mould, casting machine and casting plant provided with such an electromagnetic stirring device are also provided. A stirring method in a mould for casting aluminium or aluminium alloys is disclosed, including a phase of supply of phase-shifted currents on an electromagnetic stirring device in a mould.

A method of forming high quality metallurgical bonds in a composite casting is provided. The bonding technology of this invention includes the step of introducing a liquid material to contact the solid components placed in a mold cavity, applying an external field to generate stirring near the solid/liquid interface to wash off bubbles and oxide particles that prevent the liquid material from reacting to the solid component, and causing progressive solidification from the surfaces of the solid component to the liquid to drive away bubbles in the mushy zone near the bonding region. High quality metallurgical bonds are formed within the composite casting after the liquid solidifies. The resultant large composite casting has minimal defects, such as pores and oxides, at the interfaces between the solidified material and the solid objects.

A tastable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contains an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material.

A tastable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contains an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material.

The invention is directed to the interventionless activation of wellbore devices using dissolving and/or degrading and/or expanding structural materials. Engineered response materials, such as those that dissolve and/or degrade or expand upon exposure to specific environment, can be used to centralize a device in a wellbore.

The invention is directed to the interventionless activation of wellbore devices using dissolving and/or degrading and/or expanding structural materials. Engineered response materials, such as those that dissolve and/or degrade or expand upon exposure to specific environment, can be used to centralize a device in a wellbore.

In continuous casting, to provide products with excellent quality with high productivity. A molten metal from a melting furnace is stirred and driven by a Lorentz force due to crossing of magnetic lines of force from a magnet and direct current and sent to a mold while improving the quality of the molten metal, or a molten metal immediately before solidification in the mold by the Lorentz force to equalize the temperature of the molten metal immediately before solidification in the mold. As a result, finally a high quality product can be obtained, and the performance of the magnet can be maintained by cooling the magnet.

A die casting method includes stirring an aluminum alloy liquid in a stirrer under an airtight vacuum condition. The stirrer includes an electromagnetic inductor and a stirring rod. The aluminum alloy liquid is simultaneously subjected to an electromagnetic stirring in a direction of a magnetic field generated by the electromagnetic inductor and a mechanical stirring under a rotation action of the stirring rod. The aluminum alloy liquid is stirred for 20-80 minutes until the aluminum alloy liquid becomes semisolid to obtain a semisolid aluminum alloy slurry. The method further includes injecting the semisolid aluminum alloy slurry into a filter die to perform die casting molding at an injection speed of 1.5-2.5 m/s, an injection specific pressure of 30-80 MPa, a pressurization pressure of 60-80 MPa, and a temperature of the filter die of 250-400° C., and maintaining pressure for 7-30 seconds to obtain the filtering cavity.