A cast-iron casting, method for manufacturing a cast-iron casting, and equipment for manufacturing a cast-iron casting, which are capable of performing a plating or enameling treatment without defects on a surface of the cast-iron casting, regardless of its specifications, without decreasing productivity or increasing manufacturing costs. A mold is molded by decompressing molding sand, and a melt is poured into the mold. The inside of the mold is decompressed until the temperature of a casting formed by the melt falls to or below an A.sub.1 transformation point. The equipment includes: at least one mold; a frame feed device that moves the mold; at least one fixed suction device that decompresses the inside of the mold when stopped; at least one movable suction device that moves while decompressing the inside of the mold when the mold is moving; and a temperature sensor that measures the product surface temperature of the casting.

A cast-iron casting, method for manufacturing a cast-iron casting, and equipment for manufacturing a cast-iron casting, which are capable of performing a plating or enameling treatment without defects on a surface of the cast-iron casting, regardless of its specifications, without decreasing productivity or increasing manufacturing costs. A mold is molded by decompressing molding sand, and a melt is poured into the mold. The inside of the mold is decompressed until the temperature of a casting formed by the melt falls to or below an A.sub.1 transformation point. The equipment includes: at least one mold; a frame feed device that moves the mold; at least one fixed suction device that decompresses the inside of the mold when stopped; at least one movable suction device that moves while decompressing the inside of the mold when the mold is moving; and a temperature sensor that measures the product surface temperature of the casting.

For the purpose of providing a method of die cast product of spheroidal graphite cast iron and a die cast product of spheroidal graphite cast iron having the number of spherical graphites of 3000/mm.sup.2 or more in an as cast state, there is disclosed a method of die cast product of ultrafine spheroidal graphite cast iron, including the steps of: a melting step of heating and melting raw materials made of cast iron to obtain source melting metal; a spheroidizing treatment step in which a spheroidizing treatment is performed; an inoculation step of inoculating; and a casting step of casting in a die mold. The amount of nitrogen is adjusted so that the amount of nitrogen generated in the time of melting becomes 0.9 ppm (mass) or less.

For the purpose of providing a method of die cast product of spheroidal graphite cast iron and a die cast product of spheroidal graphite cast iron having the number of spherical graphites of 3000/mm.sup.2 or more in an as cast state, there is disclosed a method of die cast product of ultrafine spheroidal graphite cast iron, including the steps of: a melting step of heating and melting raw materials made of cast iron to obtain source melting metal; a spheroidizing treatment step in which a spheroidizing treatment is performed; an inoculation step of inoculating; and a casting step of casting in a die mold. The amount of nitrogen is adjusted so that the amount of nitrogen generated in the time of melting becomes 0.9 ppm (mass) or less.

An energy coupling device for coupling energy into molten metal. The energy coupling device includes a cavitation source which supplies energy through a cooling medium and through a receptor in contact with the molten metal. The cavitation source includes a probe disposed in a cooling channel. The probe has at least one injection port for injection of a cooling medium between a bottom of the probe and the receptor. The probe under operation produces cavitations in the cooling medium. The cavitations are directed through the cooling medium to the receptor.

An energy coupling device for coupling energy into molten metal. The energy coupling device includes a cavitation source which supplies energy through a cooling medium and through a receptor in contact with the molten metal. The cavitation source includes a probe disposed in a cooling channel. The probe has at least one injection port for injection of a cooling medium between a bottom of the probe and the receptor. The probe under operation produces cavitations in the cooling medium. The cavitations are directed through the cooling medium to the receptor.

A molten metal processing device including an assembly mounted on the casting wheel, including at least one vibrational energy source which supplies vibrational energy to molten metal cast in the casting wheel while the molten metal in the casting wheel is cooled, and a support device holding the vibrational energy source. An associated method for forming a metal product which provides molten metal into a containment structure included as a part of a casting mill, cools the molten metal in the containment structure, and couples vibrational energy into the molten metal in the containment structure.

A molten metal processing device including an assembly mounted on the casting wheel, including at least one vibrational energy source which supplies vibrational energy to molten metal cast in the casting wheel while the molten metal in the casting wheel is cooled, and a support device holding the vibrational energy source. An associated method for forming a metal product which provides molten metal into a containment structure included as a part of a casting mill, cools the molten metal in the containment structure, and couples vibrational energy into the molten metal in the containment structure.

A counter gravity casting apparatus includes a reusable metal mold having a plurality of mold cavities, a feed tube configured to feed molten alloy into the mold, and a vacuum fitting configured to permit a vacuum to be applied to the mold. The mold includes multiple metal sections configured such that adjacent metal sections mate to one another, the metal sections being separable from one another. The metal sections include recesses that form the mold cavities, and the mold includes a sprue and multiple runner passages. The sprue is configured to receive molten alloy from the feed tube, and the multiple runner passages are configured to feed molten alloy from the sprue to the mold cavities. Methods of casting bulk amorphous alloy articles or feedstock is described.

A method of making a reinforced metal alloy component, the method including introducing a reinforcing phase precursor into a bulk alloy that is selected from the group consisting of high-entropy alloys, aluminum-based alloys, magnesium-based alloys and combinations thereof. The precursor is converted to a reinforcing phase by exposing the bulk alloy and precursor to an elevated temperature during one or more of a subsequent heat treating step, squeeze casting shaping or semi-solid metal shaping.