Patent classifications
B22D11/115
Continuous casting facility and continuous casting method used for thin slab casting for steel
A continuous casting facility used for thin slab casting has a mold for casting molten steel, an immersion nozzle that supplies the molten steel into the mold, and an electromagnetic stirring device capable of providing a swirl flow at a molten steel surface in the mold, and a thickness D.sub.Cu (mm) of a copper plate of a long side wall, a thickness T (mm) of a steel piece, a frequency f (Hz) of the electromagnetic stirring device, electric conductivity σ (S/m) of the molten steel, and electric conductivity σ.sub.Cu (S/m) of the copper plate of the long side wall are adjusted to satisfy the following formulae (1)-a and (1)-b:
D.sub.Cu<√(2/σ.sub.Cuωμ) (1)-a
√(1/2σωμ)<T (1)-b, where ω=2πf: angular velocity (rad/sec), and μ=4π×10.sup.−7: magnetic permeability in vacuum (N/A.sup.2).
Continuous casting facility and continuous casting method used for thin slab casting for steel
A continuous casting facility used for thin slab casting has a mold for casting molten steel, an immersion nozzle that supplies the molten steel into the mold, and an electromagnetic stirring device capable of providing a swirl flow at a molten steel surface in the mold, and a thickness D.sub.Cu (mm) of a copper plate of a long side wall, a thickness T (mm) of a steel piece, a frequency f (Hz) of the electromagnetic stirring device, electric conductivity σ (S/m) of the molten steel, and electric conductivity σ.sub.Cu (S/m) of the copper plate of the long side wall are adjusted to satisfy the following formulae (1)-a and (1)-b:
D.sub.Cu<√(2/σ.sub.Cuωμ) (1)-a
√(1/2σωμ)<T (1)-b, where ω=2πf: angular velocity (rad/sec), and μ=4π×10.sup.−7: magnetic permeability in vacuum (N/A.sup.2).
CASTING EQUIPMENT AND CASTING METHOD
The present disclosure relates to a casting apparatus and a casting method. The casting method includes injecting a molten material into a mold by using a nozzle, forming a static magnetic field applied region and a non-static magnetic field applied region in a width direction of the mold and controlling a flow of the molten material in a longitudinal direction of the mold, and drawing a cast slab. Through this, as the flow of the molten material accommodated in a container is locally controlled, cleanliness of the molten material may be secured, and a quality of a product may be improved.
CASTING EQUIPMENT AND CASTING METHOD
The present disclosure relates to a casting apparatus and a casting method. The casting method includes injecting a molten material into a mold by using a nozzle, forming a static magnetic field applied region and a non-static magnetic field applied region in a width direction of the mold and controlling a flow of the molten material in a longitudinal direction of the mold, and drawing a cast slab. Through this, as the flow of the molten material accommodated in a container is locally controlled, cleanliness of the molten material may be secured, and a quality of a product may be improved.
HIGH-EFFICIENCY AND SHORT-PROCESS METHOD FOR PREPARING A HIGH-STRENGTH AND HIGH-CONDUCTIVITY COPPER ALLOY
A high-efficiency and short-process method for preparing a high-strength and high-conductivity copper alloy is disclosed, comprising the following steps: performing horizontal continuous casting to obtain an as-cast primary billet of copper alloy, wherein the alloying elements in the obtained as-cast primary billet being in a supersaturated solid solution state; after peeling the obtained as-cast primary billet, directly performing continuous extrusion, cold working and aging annealing treatment to obtain a copper alloy, and keeping the alloying elements of the billet in a supersaturated solid solution state during the process of continuous extrusion. The method shortens the flow, reduces energy consumption and improves the product forming rate.
HIGH-EFFICIENCY AND SHORT-PROCESS METHOD FOR PREPARING A HIGH-STRENGTH AND HIGH-CONDUCTIVITY COPPER ALLOY
A high-efficiency and short-process method for preparing a high-strength and high-conductivity copper alloy is disclosed, comprising the following steps: performing horizontal continuous casting to obtain an as-cast primary billet of copper alloy, wherein the alloying elements in the obtained as-cast primary billet being in a supersaturated solid solution state; after peeling the obtained as-cast primary billet, directly performing continuous extrusion, cold working and aging annealing treatment to obtain a copper alloy, and keeping the alloying elements of the billet in a supersaturated solid solution state during the process of continuous extrusion. The method shortens the flow, reduces energy consumption and improves the product forming rate.
ULTRASONIC ENHANCEMENT OF DIRECT CHILL CAST MATERIALS
A method and apparatus for direct chill casting of metals and metal alloys which includes application of vibrational energy to the molten material in an open-ended mold and at the outlet of the mold are provided. In an aspect, the method is directed to the production of cast aluminum alloys.
ULTRASONIC ENHANCEMENT OF DIRECT CHILL CAST MATERIALS
A method and apparatus for direct chill casting of metals and metal alloys which includes application of vibrational energy to the molten material in an open-ended mold and at the outlet of the mold are provided. In an aspect, the method is directed to the production of cast aluminum alloys.
APPARATUS AND METHOD TO CONTROL CONTINUOUS CASTING, USING ELECTROMAGNETIC BRAKE
Apparatus to control continuous casting, comprising a mold provided with at least one entrance end through which liquid metal is introduced. Furthermore, according to the present invention, the apparatus to control continuous casting comprises at least one electromagnetic brake associated with the mold, configured to induce in the liquid metal recirculation flows, and a control and command unit connected at least to the electromagnetic brake and configured to manage the functioning thereof.
METHOD FOR PRODUCING SHEET INGOTS BY VERTICAL CASTING OF AN ALUMINIUM ALLOY
A method for casting a metal alloy in an ingot mold extending along a vertical axis, the horizontal section of the ingot mold being parallelepiped in shape. During casting, a travelling alternating magnetic field is applied to a liquid phase of the alloy, the magnetic field having a maximum amplitude propagating along an axis of propagation. Under the effect of the magnetic field, a Lorentz force is applied to the liquid phase of the alloy, such that a Lorentz force of maximum intensity propagates along the axis of propagation. The method includes modulating the maximum intensity of the Lorentz force propagating along the axis of propagation. This modulation is obtained by varying, over time, one or more parameters, referred to as force parameters, governing the Lorentz force. An ingot obtained by the method is also described.