SU1165067A1 - Installation for electroslag melting of ingots - Google Patents

Abstract

INSTALLATION FOR ELECTROSLAG SLIMING OF INGOTS, containing a column, a drive carriage with an electrode holder, a crystallizer, a gas suction unit with an umbrella mounted on the column console above the crystallizer, characterized in that, in order to use the radiated heat and heat of the exhaust gases, it is equipped with a loading zone located above the umbrella the device, and the walls of the umbrella are hollow in the form of an annular closed container with a plugged hole at the lower end and a loading funnel in its upper part, with the umbrella installed with awn axial rotation.

Description

The invention relates to special electrometallurgy and can be used in installations for electroslag smelting of ingots.

The aim of the invention is the use of radiant heat and heat of waste gases for heating bulk materials.

The drawing shows an installation for electroslag smelting, the general view.

The installation contains a column 1. A carriage 2 of the electrode holder 3 is mounted on the column 1 with the ability to move along the column 1 by means of the driving rollers 4. Non-consumable electrodes 5 are fixed to the electrode holder 3. The driving carriage 6 by means of wheel pairs 7 has the ability to move along the guide rails 8. On the carriage 6, a mold with melted ingot 10 and molten refining slag 11 is installed.

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On the mold 9 installed heat-resistant protective screens 12. On the column 1 is fixed to the console 13, which is installed suction pump 14.

The umbrella 15 of the suction unit 14 is located between Jt do screens 12 above the mold 9.

The umbrella body 15 is made in the form of walls 16 arranged with a gap.

ate about

The walls 16 of the umbrella 15 are closed in the lower part, forming a container 17. The opening of the outlet 18 is located in the bottom of the container 17 and is covered with a stopper 19.

The upper part of the tank 17 is shaped

ring funnel 20.

On the console 13 above the annular funnel 20 installed boot device 21 with a capacity of 22, filled with low-melting granular material 23.

The socket 24 of the umbrella 15 is fixed in the console 13 with the possibility of rotation around the axis 25 by connecting it through

a gear drive 26 with a rotational drive 27.

The installation works as follows.

Turning on the actuator 27, a gear .26 and an umbrella 15 rigidly connected to it are driven into rotation. At the same time, the valve of the loading device 21 opens and the fusible material 23 of the container 22 is loaded into the container 17 of the umbrella 15 through the annular funnel 20.

As a result of the rotation of the umbrella 15, the material is evenly distributed throughout the volume of the tank 17. After the tank 17 is filled with material 23, the actuator 27 is turned off.

A solid preform is then placed on the bottom of the mold 9 and molten slag 11 is poured.

By moving the carriage 6 along the guide rails 8, the mold 9 is installed under the umbrella 15 of the suction unit 14.

Moving the carriage 2 of the electrode holder 3 along the column 1 lowers the non-consumable electrodes 5 s slag bath, after which the subsequent consumable electrodes 5 of the slag 11 and the molten upper layer of the billet are heated followed by pouring the molten

metal of the second layer of melted ingot.

In this case, the slag bath mirror emits a large amount of heat and during operation

gas suction, this heat flux acquires a directional upward movement, the walls of the umbrella container heat up, and the fusible material 23 is heated to melt.

After the ingot smelting process is completed, the non-consumable electrodes 5 are disconnected from the power supply and removed from the slag bath: The crystallizer 9 with the carriage 6 is removed from under the suction hood 15

14,

After opening the outlet 18, the material in the molten state is drained into the receiving or casting container.

Then the cycle is repeated.

The use of the proposed installation for electroslag surfacing of ingots will make it possible to use the heat radiated in the process of electroslag surfacing, for example, for melting a low-melting material, as well as for flux calcining used for the subsequent electroslag process.

Claims (1)

INSTALLATION FOR ELECTRIC SLAG Smelting of ingots, containing a column, a drive carriage with an electrode holder, a mold, a gas suction device with an umbrella mounted on the console of the column above the mold, characterized in that, in order to use the radiated heat and heat of the exhaust gases, it is equipped with a loading device located above the umbrella and the walls of the umbrella are hollow in the form of an annular closed container with a muffled hole at the lower end and a loading funnel in its upper part, the umbrella being installed with the possibility axial rotation.