The invention relates to a method for producing casting bodies in a levitation melting method in which a batch of an electrically conductive material is brought into the sphere of influence of at least one alternating electromagnetic field by means of a starting material having a plurality of pre-separated batches separated by regions of reduced cross-section so that the batch is kept in a state of levitation. The regions are designed in such a way that separation of the pre-separated batches takes place only during melting in an alternating electromagnetic field. The melt is then cast into casting moulds.

The invention relates to a method for producing casting bodies in a levitation melting method in which a batch of an electrically conductive material is brought into the sphere of influence of at least one alternating electromagnetic field by means of a starting material having a plurality of pre-separated batches separated by regions of reduced cross-section so that the batch is kept in a state of levitation. The regions are designed in such a way that separation of the pre-separated batches takes place only during melting in an alternating electromagnetic field. The melt is then cast into casting moulds.

A method for manufacturing a steel ingot in a casting arrangement (100) comprising a vacuum vessel (110); an ingot mold (120) arranged within the vacuum vessel and a stirrer (130) arranged to stir liquid steel in the ingot mold, comprising: -providing (1000) a liquid steel melt; filling (2000) the ingot mold (100) with the liquid steel melt; applying (3000) a reduced pressure within the vacuum vessel (110); allowing the liquid steel melt to solidify into an ingot; allowing the liquid steel melt to solidify under stirring within the ingot mold at a reduced pressure during solidification of the steel melt; wherein, the liquid steel melt comprises a predetermined amount of carbon and; incidental impurity elements in the form of oxides, wherein during stirring the oxides are reduced by carbothermic reaction in which oxygen in the oxides and carbon in the steel melt form carbon-monoxide.

A method for manufacturing a steel ingot in a casting arrangement (100) comprising a vacuum vessel (110); an ingot mold (120) arranged within the vacuum vessel and a stirrer (130) arranged to stir liquid steel in the ingot mold, comprising: -providing (1000) a liquid steel melt; filling (2000) the ingot mold (100) with the liquid steel melt; applying (3000) a reduced pressure within the vacuum vessel (110); allowing the liquid steel melt to solidify into an ingot; allowing the liquid steel melt to solidify under stirring within the ingot mold at a reduced pressure during solidification of the steel melt; wherein, the liquid steel melt comprises a predetermined amount of carbon and; incidental impurity elements in the form of oxides, wherein during stirring the oxides are reduced by carbothermic reaction in which oxygen in the oxides and carbon in the steel melt form carbon-monoxide.

By setting an electric resistance of a trough to a value larger than an electric resistance of a molten metal stored in a storage space, in a non-driving state, a current is caused to flow along a first current path from one side wall of the pair of side walls to another side wall through the bottom wall, and in a driving state, a current is caused to flow through a second current path from the one side wall through a middle part of the first current path and bypass to the molten metal, and return to the first current path, and in the driving state, in the molten metal, causing the magnetic force lines running vertically and the current running horizontally to cross each other to generate a Lorentz force, and by the Lorentz force, driving and carrying the molten metal in the trough.

By setting an electric resistance of a trough to a value larger than an electric resistance of a molten metal stored in a storage space, in a non-driving state, a current is caused to flow along a first current path from one side wall of the pair of side walls to another side wall through the bottom wall, and in a driving state, a current is caused to flow through a second current path from the one side wall through a middle part of the first current path and bypass to the molten metal, and return to the first current path, and in the driving state, in the molten metal, causing the magnetic force lines running vertically and the current running horizontally to cross each other to generate a Lorentz force, and by the Lorentz force, driving and carrying the molten metal in the trough.

Provided is a high-quality semi-solid slurry manufacturing apparatus and method using optimized process parameters, and a component molding apparatus including the semi-solid slurry manufacturing apparatus, and particularly, a high-quality semi-solid slurry manufacturing apparatus and method using optimized process parameters, which can optimize process parameters for manufacturing a semi-solid slurry such that a fine slurry structure and uniform spheroidized particles are obtained and can obtain high-quality products by increasing convenience and productivity of the apparatus, and a component molding apparatus including the semi-solid slurry manufacturing apparatus.

Large steel ingot casting is accomplished with a top suspended induction heating device supplied with variable power and variable frequency from a power source. By the induction heating and stirring provided by the top suspended induction heating device, metal solidification advances progressively upwards from bottom to top, and the upper molten metal in a riser part compensates for shrinkage of the lower solidified metal in the main part. Inclusions are selectively moved out of the molten metal by a variable electromagnetic stirring force and the formation of casting defects is suppressed.

Large steel ingot casting is accomplished with a top suspended induction heating device supplied with variable power and variable frequency from a power source. By the induction heating and stirring provided by the top suspended induction heating device, metal solidification advances progressively upwards from bottom to top, and the upper molten metal in a riser part compensates for shrinkage of the lower solidified metal in the main part. Inclusions are selectively moved out of the molten metal by a variable electromagnetic stirring force and the formation of casting defects is suppressed.

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.