SU344691A1 - Device for group continuous casting of metals - Google Patents

Description

A device for continuous casting of 1-metals with an ingot forming an electromagnetic field is known, comprising an annular inductor, an electromagnetic shield and a cooling system for the ingot and inductor.

During the simultaneous casting of several ingots on a multi-strand installation, when the inductors are connected in series and are located in close proximity to each other, the symmetry of the magnetic floor forming SpiOTKj in the horizontal plane is broken. This occurs due to the weakening of the magnetic field as a result of the influence of the inductors and the magnetic field created by the currents in the bridges connecting the inductors. In places with a weakened magnetic field, the liquid metal is extruded in the direction of the regulator, thus disrupting the specified spit form.

The purpose of the invention is to eliminate the distortion of the ingot profile.

This is achieved by the fact that inductors in zones with a weakened magnetic field have a variable height.

and its current remains unchanged; therefore, in areas with a lower height, the current density increases and the magnetic field becomes necessary, becoming uniform along the entire perimeter of the ingot. The lower boundary of the liquid zone of the ingot formed by the magnetic field is always at or above the center of the inductor. The copper busbar of the inductor is profiled in its lower part, and the upper edge of the inductor is located in one

plane.

To reduce the effect of the demagnetizing effect of the currents in the jumpers that connect the inductors, the jumpers are made inclined downwards at an angle of 30-45. In order to reduce

Because of the gaps in the inductors, they are glued together with epoxy adhesives with insulation between them.

FIG. 1 schematically shows a device for group continuous casting of metals,

general form; in fig. 2 - inductors.

The device consists of series-connected inductors 1, a common water collector 2, a common cooling chamber 3, and electro-screen screens 4.

Inductors 1 are made of rectangular section busbars and placed in a cooling chamber 3. For the preservation of stiffness, they are fixed in colas; in the grooves made in the water reservoir of the cooling chamber. The cooling chamber, made of a waterproof dielectric, peaks to the collector.

The inductors are equipped with current-carrying tires 5, as used to supply cooling water and

jumpers 7 for connecting inductors.

Cool Ohdan9 (e copper rectangular tru & bb

soldered to busbars.

W FIG. 2 shows areas with variable height inductors along A-A. In the regions of inductors 6 by a weakened magnetic field, the height of the Copper Field is posttenno-zeni-weights towards the shortest distance between the inductors (to the gaps in the inductors). This ensures that the magnetic field is level around the perimeter of the inductor. The height of the height increases with decreasing distance between the inductors.

Jumpers 7 are tilted from two sides. From the bottom down. If the magnetic field at the point of attachment, the supply of 1 tires 5 to the inductor has a place of weakening, reflecting on the shape of the tire, this also applies to the supply tires.

Claims (2)

Invention Formula -f. A device for group continuous casting of metals with ingot formation by an electromagnetic field, including inductors, electromagnetic screens, cooling system, characterized in that, in order to eliminate distortion of the ingot profile, inductors in areas with weakened Hbnv magnetic field are filled with a gradual decrease in height in the direction of the magnetic field . 2. The device according to claim 1, characterized in that the connectors connecting the inductors are filled with the inclined internal waves.  shaded A, / (wig.2