DE2232159B2 - Power supply device for an electroslag remelting furnace - Google Patents

Description

25th

3 °

The invention relates to a power supply device for an electroslag remelting furnace, Containing a mold with an inlay and a column that serves as a guide; jr a trolley which is an electrode holder with power cables carries, which are connected with cable lugs, from one to the current collector of the electrode is electrically connected.

) e according to the shape of the ingots to be smelted is the electroslag remelting of metals and alloys with the electrodes connected to the power source or with a pole connected to the mold and the other pole or poles to the electrodes.

In the known power supply devices for the electroslag remelting furnace mentioned at the beginning In order to switch from one mode of operation to the other, it is necessary to convert the system, by removing the electrode holder and replacing it with another one, the cable shoes must also be removed and eriet / .t by others and the power supply lines accordingly must be changed, and finally every time it is necessary to counterbalance the electrode holder to separate and to attach it to the other electrical (Jenhalter and a corresponding weight compensation to undertake. This takes seven to ten days during which the system is idle. It is also necessary to have two types of electrode holders and power leads at all times available for each plant.

The present invention has for its object to provide a power supply device for an electro-slag remelting furnace that allows easily the transition from an operation for ^{6 <>} another without a special conversion must be made.

In the case of a power supply device of the type mentioned at the outset, this is achieved according to the invention by that the cable lug by means of a flexible link with the current collector in electrical Connection is and is electrically isolated and mechanically rigidly connected to the cable lug on a common Axle shaft is optionally displaceable, either until contact of the cable lug with your Pantograph and simultaneous connection of the cable lug with a third spring-loaded pantograph or until the cable lug only makes contact with the pantograph.

This makes it possible, with just one displacement of an axle shaft, from the one operating mode in which the power source is only connected to the electrodes to switch to the other mode of operation in which one pole of the power source is connected to the mold.

The invention will now be described in greater detail on the basis of an exemplary embodiment with reference to the drawing described. It shows

1 shows a schematic overall view of an electric slag remelting furnace.

F i g. 2 the furnace in plan view.

F i g. 3 the detail Λ of FIG . 1.

The electroslag remelting furnace / to remelting metals and alloys has a Column 1 (Figs. 1 and 2). on which the trolley 2 is attached so as to be vertically displaceable. The trolley 2 carries an electrode holder 3. in its opening on the side of my attachment to the trolley 2 pressure jaws 4 and 5 are arranged, which with a drive, not shown, for pressing the electrode are connected.

In the opening of the electrode holder 3 are opposite the pressing jaws 4 and 5 current collectors b and 7 arranged from each other and from the electrode holder 3 are electrically isolated. The electrode holder 3 has a projection 8. through its hole an axle shaft 9 with cable lugs 10 and 8 attached to the ends on both sides of the projection 8

11 (Fig. 3) is performed. which by means of a power cord

12 and 13 connected to the secondary winding of a transformer (not shown in the drawing) are. The cable lugs 10 and 11 can be moved up and down. The pantograph 7 is around the Projection 8 of the electrode holder 3 guided and attached to the lower surface of the latter. The upper Cable lug 10 is electrically connected to current collector 6 by means of a flexible connecting link 14. Under the lower end face of the axle shaft 9 is on a cantilever 15 of the electrode holder 3 a abge spring-loaded current collector 16 is arranged, which is connected by a cable 17 to a base 18. the Axle shaft 9 is connected to a drive mechanism not shown in the drawing.

The power supply device operates as follows. Into the breakthrough of the electric power supply} one or more electrodes (depending on the intended remelting) are inserted and through the Pressure jaws 4 and 5 pressed against the current collectors 6 and 7. When remelting one or more Electrodes in the "Electrode-Base" mode of operation, the axle shaft 9 is inserted into the shifted lower position, the upper cable lug 10 to the current collector 7, while the cable lug 11 pressed against the spring-loaded pantograph 16 will.

In this case, current is supplied to one or more electrodes and the base 18.

ι /

When remelting two or more electrodes in the "electrode-electrode" mode, the Axle shaft 9 with cable lug 10 in the upper position moved, wherein the cable lug 10 is removed from the current collector 7, while the cable lug Il is pressed against this.

For this purpose 2 sheets of drawings

Claims (1)

Claim: Stromzufünrungsvorriehtung for an Elektrojchlacke convertible furnace, containing a mold s with a pedestal and a column that acts as a guide serves for a trolley that carries an electrode holder with power cables, which with cable lugs are connected, one of which is electrically connected to the current collector of the electrode, thereby marked that the cable lug (10) by means of a flexible link (14) with the current collector (6) in electrical connection stands and with the cable lug (11) electrically isolated and mechanically rigidly connected on a common axle shaft (9) is optionally displaceable, either until contact is made with the cable lug (10) with the current collector (7) and at the same time making contact with the cable lug (11) with a third spring-loaded pantograph (16) or up to the sole contact of the cable lug (11) with the pantograph (7).