A method for producing an austenitic stainless steel slab by continuous casting of an austenitic stainless steel, including applying electric power to the molten steel in a depth region providing a solidification shell thickness of from 5 to 10 mm at least at a center position in the long edge direction, so as to cause flows in directions inverse to each other in the long edge direction on both long edge sides, thereby performing electro-magnetic stirring (EMS) to control a continuous casting condition satisfying 10<T<50F.sub.EMS+10. Herein, T represents a difference between an average molten steel temperature ( C.) and a solidification starting temperature ( C.) of the molten steel, and F.sub.EMS represents a stirring intensity index shown by a function of a molten steel flow velocity in the long edge direction imparted by the electro-magnetic stirring and a casting velocity.

A method for producing an austenitic stainless steel slab by continuous casting of an austenitic stainless steel, including applying electric power to the molten steel in a depth region providing a solidification shell thickness of from 5 to 10 mm at least at a center position in the long edge direction, so as to cause flows in directions inverse to each other in the long edge direction on both long edge sides, thereby performing electro-magnetic stirring (EMS) to control a continuous casting condition satisfying 10<T<50F.sub.EMS+10. Herein, T represents a difference between an average molten steel temperature ( C.) and a solidification starting temperature ( C.) of the molten steel, and F.sub.EMS represents a stirring intensity index shown by a function of a molten steel flow velocity in the long edge direction imparted by the electro-magnetic stirring and a casting velocity.

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.

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.

Capture of a foreign matter into a solidified shell is effectively suppressed. A continuous casting method is a method which is carried out with use of a continuous casting device, and includes: a discharging step of discharging molten steel through a discharge hole; and a stirring step of stirring the molten steel so that a stirring region includes a whole line segment via which the discharge hole and a reached location are connected to each other, the reached location being a location on a surface of the molten steel in a mold which location is reached by the molten steel in a case where the molten steel discharged in the discharging step proceeds straight.

Capture of a foreign matter into a solidified shell is effectively suppressed. A continuous casting method is a method which is carried out with use of a continuous casting device, and includes: a discharging step of discharging molten steel through a discharge hole; and a stirring step of stirring the molten steel so that a stirring region includes a whole line segment via which the discharge hole and a reached location are connected to each other, the reached location being a location on a surface of the molten steel in a mold which location is reached by the molten steel in a case where the molten steel discharged in the discharging step proceeds straight.

An induction coil assembly associated with controlling the flow of molten material used in casting or deposition of precious and/or non-precious metals on a substrate is disclosed. The assembly comprises one or more induction coils associated with induction melting of electrically conductive material by applying a predetermined current value. The assembly further comprises a crucible comprising the electrically conductive material in which an electromagnetic field is generated therein by the predetermined current value applied to the induction coils. The electromagnetic field associated with the electrically conductive material is modulated; and is used to generate smaller units of the electrically conductive material by interrupting velocity of a flow of the material in order to produce grains or apply layers on the substrate. Corresponding methods are also disclosed.

A primary object of the present invention is to provide a technique of avoiding occurrence of surface defects caused by an electromagnetic brake while checking internal defects with this electromagnetic brake, so that cleanliness of a cast steel can be improved compared with prior arts, and the present invention provides a method for continuously casting steel, the method comprising supplying molten steel into a funnel mold while applying an electromagnetic brake to an outlet flow discharged from an outlet port of an immersion nozzle, wherein magnetic flux density (B) of the electromagnetic brake is within a range of the following (Formula 1): $\begin{array}{c}{B}_{\min }B{B}_{\max },B_{\min }=\frac{800.Math.{\left(\frac{D_{\max }}{D_0}\right)}^3.Math.\left(\frac{H_{\mathrm{SEN}}}{H_0}\right)}{.Math.(v.Math.\sin }\end{array}$

A primary object of the present invention is to provide a technique of avoiding occurrence of surface defects caused by an electromagnetic brake while checking internal defects with this electromagnetic brake, so that cleanliness of a cast steel can be improved compared with prior arts, and the present invention provides a method for continuously casting steel, the method comprising supplying molten steel into a funnel mold while applying an electromagnetic brake to an outlet flow discharged from an outlet port of an immersion nozzle, wherein magnetic flux density (B) of the electromagnetic brake is within a range of the following (Formula 1): $\begin{array}{c}{B}_{\min }B{B}_{\max },B_{\min }=\frac{800.Math.{\left(\frac{D_{\max }}{D_0}\right)}^3.Math.\left(\frac{H_{\mathrm{SEN}}}{H_0}\right)}{.Math.(v.Math.\sin }\end{array}$

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.