SU435286A1 - INDUCTION CHANNEL OVEN - Google Patents

Description

one

This invention relates to electric steel making.

Induction channel furnaces are known, consisting of a bath with an annular channel, an iron core inductor and a drain metal conductor.

One of the significant drawbacks of such furnaces is that the electromagnetic forces arising in the metal and setting it in motion depend on the shape and size of the channel and bath, the power of the inductor and other factors. Another disadvantage of such furnaces is the need for turning the furnace when metal is drained.

In order to eliminate these drawbacks, the proposed induction furnace is equipped with a horseshoe-shaped electromagnet mounted with an end on the bath between the vertical channels of the furnace, the discharge end of the metal pipe is installed between the ends of the electromagnet, which are filled to the depth of the metal.

The drawing shows the described induction channel furnace with an additional electromagnet and a drain metal pipeline.

The induction channel furnace consists of a bath 1 with a channel 2 filled with metal 3, an inductor 4 with a power coil 5, a submersible electromagnet 6 with a power coil 7

and a protective lining 8, as well as a drain metal pipe 9.

To carry out the process of melting metal, the furnace is preliminarily filled with a metal to form a short-circuited coil formed by the metal in channel 2 and bath 1, which is the secondary winding of inductor 4. When voltage is applied to coil 5 of inductor 4 on the metal in the channel and bottom of the bath current flows. As a result of the passage of current, the metal is heated and melted.

After the metal is melted in the furnace vessel, a removable electromagnet 6 is installed, and, if necessary, the metal is mixed, a voltage is applied to the coil 7 of the electromagnet, which creates a magnetic flux B, directed perpendicular to the current. As a result of the interaction of the current in the liquid metal and the magnetic flux, an electromagnetic force F arises, directed upwards or downwards, depending on the direction of the current and the magnetic flux.

Under the action of electromagnetic force, the metal is set in motion, as a result of which it is mixed. The intensity of mixing is controlled by changing the voltage on an electromagnet or inductor. To drain the metal from the furnace, the electromagnet is placed on the drain gap.

the metal is 9. The direction of the current in the liquid metal and the magnetic current generated by the electromagnet is chosen such that the electromagnetic force is direction up. Under the action of this force, the liquid metal is drained from the furnace through a drain pipe.

The electromagnet is removable and can be installed in the furnace vessel in the event of metal being mixed or drained from the furnace, or in the vessel and in the process of melting.

Subject invention

Claims (3)

1. P1 induction channel furnace consisting of a bath with an annular channel, an inductor with an iron core and a drain metal conduit, characterized in that, in order to create a variable in magnitude and direction of the electromagnetic force in the liquid metal, it is equipped with a horseshoe-shaped electromagnet mounted by the end on the bath between the vertical channels of the furnace. 2. Furnace according to claim 1, characterized in that the ends of the electromagnet immersed in the metal are lined. 3. Furnace according to claim 1, characterized in that the discharge end of the drain metal pipe is installed between the ends of the electromagnet.