A socket installation structure of a refractory article is designed to prevent gas leakage therein. A first flange is provided between an outward end and an inward end of a socket, and a face of the first flange on the side of an inward end thereof is bonded to an article body of the refractory article through a sealing material. Further, a face of the first flange on the side of an outward end thereof faces a metal plate disposed around the outward end or a second flange provided on the side of the outward end, through a low thermally-conductive material layer made of a low thermally-conductive material having a thermal conductivity at room temperature of 40 (W/(m.Math.K)) or less.

Provided is a molten material treatment apparatus including: a container having an upper portion, on which a molten material injection part is disposed, and a bottom part in which a hole is formed; a gas injection part attached to the bottom part between the molten material injection part and the hole; a chamber part formed on the upper portion of the container so as to face the gas injection part and having an inside open downward; and a plurality of vertical members disposed so as to cross a plurality of positions of a rotary flow region formed between the chamber part and the bottom part, wherein an inclusion removal efficiency can be improved while maintaining the molten material surface by a method in which a plurality of mutually different rotary flows are generated in a plurality of sections within the rotary flow region and are partially overlapped.

Provided is a molten material treatment apparatus including: a container having an upper portion, on which a molten material injection part is disposed, and a bottom part in which a hole is formed; a gas injection part attached to the bottom part between the molten material injection part and the hole; a chamber part formed on the upper portion of the container so as to face the gas injection part and having an inside open downward; and a plurality of vertical members disposed so as to cross a plurality of positions of a rotary flow region formed between the chamber part and the bottom part, wherein an inclusion removal efficiency can be improved while maintaining the molten material surface by a method in which a plurality of mutually different rotary flows are generated in a plurality of sections within the rotary flow region and are partially overlapped.

A nozzle put into a molten metal in vertical upwards continuous casting for casting a cast product by pulling up the molten metal, the nozzle includes a nozzle body having an intake hole through which the molten metal is taken in and which is formed in a lateral surface of the nozzle body and a flange portion formed on lower side of the intake hole and projecting beyond the nozzle body.

A nozzle put into a molten metal in vertical upwards continuous casting for casting a cast product by pulling up the molten metal, the nozzle includes a nozzle body having an intake hole through which the molten metal is taken in and which is formed in a lateral surface of the nozzle body and a flange portion formed on lower side of the intake hole and projecting beyond the nozzle body.

The invention relates to the field of aluminum metallurgy and can be used to produce ingots from high quality aluminum alloys when manufacturing aerospace and automotive products. The use of this invention relates to the technology of secondary modification. The method of casting products from aluminum alloys includes the following stages: a) aluminum melt preparation in the alloying furnace; b) addition alloy introduction into melt; c) degassing of the aluminum melt containing the addition alloy; d) addition alloy re-introduction; e) filtration of the aluminum melt obtained at stage d) and f) feeding the filtered melt into the crystallizer. It ensures the improved effectiveness of the aluminum melt modification with addition alloys without additional constructional changes in existing lines for aluminum ingot casting. It allows reducing the alloy modification costs, decreasing the grain in resulting alloys and improving plastic and mechanical properties of the obtained cast ingots and their products.

A molten metal processing device including a molten metal containment structure for reception and transport of molten metal along a longitudinal length thereof. The device further includes a cooling unit for the containment structure including a cooling channel for passage of a liquid medium therein, and an ultrasonic probe disposed in relation to the cooling channel such that ultrasonic waves are coupled through the liquid medium in the cooling channel and through the molten metal containment structure into the molten metal.

A molten metal processing device including a molten metal containment structure for reception and transport of molten metal along a longitudinal length thereof. The device further includes a cooling unit for the containment structure including a cooling channel for passage of a liquid medium therein, and an ultrasonic probe disposed in relation to the cooling channel such that ultrasonic waves are coupled through the liquid medium in the cooling channel and through the molten metal containment structure into the molten metal.

Provided is casting equipment and a casting method using same. A casting method includes: preparing a tundish; injecting molten steel to the tundish; installing a vacuum forming member on an upper portion of the tundish to form vacuum in at least a partial area of an upper portion of a melting surface of molten steel accommodated in the tundish; forming a rotational flow by blowing a gas into the molten steel; and forming vacuum in at least a partial area of the upper portion of the melting surface of the molten steel. More particularly, the present disclosure may effectively remove inclusions in the molten steel and restrict reoxidation of the molten steel.

Provided is casting equipment and a casting method using same. A casting method includes: preparing a tundish; injecting molten steel to the tundish; installing a vacuum forming member on an upper portion of the tundish to form vacuum in at least a partial area of an upper portion of a melting surface of molten steel accommodated in the tundish; forming a rotational flow by blowing a gas into the molten steel; and forming vacuum in at least a partial area of the upper portion of the melting surface of the molten steel. More particularly, the present disclosure may effectively remove inclusions in the molten steel and restrict reoxidation of the molten steel.