SU713216A1 - Induction channel-type smelting and dispensing furnace - Google Patents

Abstract

1.INDUCTION CHANNEL MELTING-DISTRIBUTION OVEN, containing a metal reservoir connected to the melting channel, a magnetic conductor with a winding, * am-closed around the melting channel, characterized in that in order to ensure independent controlled circular movement of the metal along the melting channel of the furnace in all modes of operation, it is equipped with one or more current collectors located along the length of the melting channel and having in place of connection with the melting channel open magnetic conductors with windings, It 's * ac alternating current. The furnace according to claim 1, characterized in that the current lead is made in the form of a channel connecting the melting channel to the tank.

Description

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This invention relates to the field of metallurgy, in particular, to structures of induction channel furnaces.

The known induction melter-distributing channel furnace consisting of a metal tank, three vertical, communicating with the channel capacity, interconnected by a horizontal channel, two magnetic circuits with coils fed by an alternating current connected to each other along vertical side channels, and a removable drain pipe connected to the vertical center channel. At the intersection of the central vertical and horizontal channels, an open magnetic circuit with coils fed by alternating current is installed.

However, to effect the movement of the metal through the channels during pauses between fills, the voltage on one of the inductor coils is reversed. At the same time, the current induced by the inductors is added up in the central channel, closed through the non-melting electrically driven element of the pipeline, the presence of which complicates its design. The interaction of the current flowing through the central channel with the magnetic field of the electromagnet creates an electromagnetic force driving the metal along the side channels. In this mode, the power transmitted per turn is reduced by more than two times compared to the prime mode. Therefore, with the metal pipe installed, the melting capacity of the furnace is significantly reduced. In addition, the presence of variable sections along the channel length complicates the possibility of metal crystallization in the channel with its subsequent melting.

The aim of the invention is to provide independent controlled circulation of metal along the melting channel of the furnace.

The goal is achieved by the fact that the furnace is equipped with one or more current leads located along the melting channel and having open magnetic circuits with alternating current at the connection with the melting channel, and the current lead is made in the form of a channel connecting the melting channel with capacity .

FIG. 1 shows the proposed oven in axonometry; in fig. 2- a furnace, a section showing the direction of currents, magnetic fluxes and metal movement for two designed 5 devices.

The device consists of a crucible 1, to the bottom of which is attached a refractory block 2 with a horizontal 0-shaped melting channel 3,

10 enclosed by a closed magnetic core 4, with a winding 5. The melting channel 3 communicates with the crucible capacity by means of a slit-like vertical opening b, current collector 7 and seps of the ticking channel 8, onto which drain pipe 9 is installed. The electromagnets 10 and 11 are installed in the melting channel 3. The drain pipe ends with a drain 12.

Before starting, the melting channel 3 and the crucible 1 are filled with metal for

25 coil formation. When the inductor 4.5 is turned on, an alternating current i (see Fig. 2) is induced by alternating voltage in coil 3, which in the area of exposure to the magnetic field of an electromagnet is divided into two components 13 and ij, indicated in the drawing arrows with blackened points. The magnetic flux of the electromagnet 10 is directed perpendicular to the plane

5 drawing. When the magnetic field of the electromagnet interacts with the component of the current 12, an electromagnetic force arises that acts along the channel. The direction of movement of the metal under the action of electromagnetic force is indicated in the drawing by an arrow with a non-blackened tip.

Thus, under the action of electromagnetic force acting

5 along the channel, there is a circulation movement of the metal, the speed of which depends on the magnitude of this force. Change the voltage. on the winding of the electromagnet 10, and thus

CQ and the magnitude of the electromagnetic force, in a wide range, regulates the speed of movement of the metal in the channel, and the magnitude of this force does not depend on the mode of operation of the transfer furnace,

and the channel section may be equal

55 throughout its length.

Claims (2)

1. INDUCTION CHANNEL Smelting and distributing furnace, containing a metal container connected to the melting channel, a magnetic circuit with a winding * closed around the melting channel, characterized in that, in order to provide independent controlled circulation of the metal along the melting channel of the furnace in all operating modes, it is equipped with one or more down conductors located along the length of the melting channel and having open magnetic circuits with windings at the junction with the melting channels, powered by a variable electric current. 2. Oven pop. 1, distinguishing me with the fact that the collector is made in the form of a channel connecting the melting channel to the tank.