DE2028554A1 - - Google Patents

Description

Gebr. Böhler & Go. Joint stock company in Vienna

Plant for electroslag remelting of metals » especially of steels

The invention relates to an installation for electric screw remelting of metals, especially steels, with two vertical columns, on each of which an electrode holder in a vertical position Direction is arranged displaceably and only one liquid-cooled mold, in which by means of the two Insert electrode holder alternately with consumable electrodes are cash. ·

A plant of the Irt just mentioned is known, in which the columns are arranged in a fixed manner and which has a separate vertical axis about which the mold can be pivoted is. With the help of this system it is possible to produce metal blocks made of several remelted electrodes In doing so, the floating electrodes become one after the other alternately fed from the two electrode holders to the mold, which lead to the respective consumable electrode is pivoted. If you have this facility for large consumable electrodes executes in correspondingly large dimensions, this prepares the supply of the consumable electrodes to the two Electrode holders and the removal of the metal block formed by the melting process in each case, great difficulties, especially since the consumable electrodes attached to the two electrode holders are only slightly spaced from one another ..

009862/1668

ϊ 1383

The invention is Aufgafe © _e basis to provide a relatively simple in construction aum ElektroßchlaekeBirasehiiielzen system that allows ea under fermeidung of voretefaend mentioned drawback timzuschmelzende electrodes in immediate succession a mold zuznfühxeno Erfinduagsgemäß is this' at a Anlag® of the above type characterized genaantea achieved that around the length axes of the Tbeidtn columns each © in electrode holder lent. is pivotable in the horizontal direetion, wherein the intersection of the Ibdidea is arcuate pivoting means between the end point of the ¹ both Sehwenkwege and the geometric longitudinal axis OCE mold sratindest during Uraschmelisvorgange® approximately through this intersection point passes ·

The embodiment example is shown in detail schematically below: Fig. _E in view and Fig. 2

In one

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auiagea 14 on

The one zylindriiehea, laae:
Mold 10 lies with ilarea
forked angeoröastta & sm & n 23
This is on de
pallet truck) belonging
Guide piece 21 is open
a spline
21 of the mold holder
I thought they were motto
of column 30 or "
both one after the other
Electrodes 40 or 40 °
seen elongation,
denhalter 50 bgw »50
can be found on the ¹
whereas the electrode holder
is arranged that of the column 3 ¹
holder 20 as well as the electrod @ content © r with the help of a selling

50®

selbta column 3 © like the Kokilleahslta? 2 ©,

-3> F 1383

Column 30 or 30 * independently of one another in the vertical direction move · As a result, when producing longer blocks 42, it is possible to adjust the height of each melting point Electrode 40 and the mold 10 to be adjusted so that on the one hand this electrode 40 in the floating on the molten metal (for cleaning and shielding the melted steel

serving) slag layer 43 is immersed and here at its end

Has the desired distance from the level of the molten metal and on the other hand - except during the initial phase of the melting process - the position of this level relative to the mold 10 remains unchanged

Each electrode holder 50 or 50 is composed in a manner analogous to the mold holder 20 from a guide piece 51 which can be displaced in the vertical direction on the associated column 30 or 30 and a pivoting part 52 which can be rotated on this. To the pivoting parts 52 or 22 of the electrode holder 50 and 50 or the mold holder 20, a toothed ring or / 24 is attached, in which a pinion 54 or 25, which is rotatably mounted on the respective guide piece 51 or 21 and engages by means of an electric Gear motor 55 or 26 can be driven. It is therefore possible to use the electric gear motors 55 and 26 to combine the swivel parts 52 of the electrode holder 50 together with the electrodes 40 or 40 * hanging on them and the swivel part 22 of the mold holder 20 With the mold 10 attached to it, pivot around the longitudinal axis of the associated column 30 or 30 * ZU _1. The center of the single base plate 62, which is preferably made of copper, on which the solidified metal block 42 formed by the re-melting process rests, lies approximately on the vertical which is defined by the intersection of the two arcuate pivoting paths S ₁ , S _{2 of} the electrodes 40 and 40 * is intended · From one pole of the power source used (not shown) (e.g. secondary winding of a transformer) electrical lines 60 lead to an extension rod 41 each of the two electrodes 40 and 40 ', while the other pole of the power source with the base plate 62 also is connected by an electrical line 61. During the sealing process. the mold 10 is cooled by means of water that passes through the inner jacket 11 and outer jacket 12 of the

009852/1568

- 4 - F 138 ';;

Mold 10 existing cavity 13 flows * The supply and discharge of the cooling water to and from this cavity 13 takes place with the help of flexible hoses (not shown). With the help of the system just described, it is möglieh, steel 'blocks to produce, ate of several ^ molten electrodes are made, the umzusehmelzenden electrodes 40 or * 40 are alternately supplied to * iron the two EIeIctrodenhaltern 50 and 50 * of the mold 10 * immediate succession ·

Compared to the known installation mentioned earlier, for electroslag re-welding. of metals, the system according to the invention achieves the very essential continuation of the fact that with it, as a result of the pivotability of the electrode holder vt & ä of the mold holder, the supply of the consumable electrode]! to the similar two electrode holders and the removal of the metal block formed by the melting process does not cause any difficulties even in cases in which the consumable electrodes are designed in particularly large dimensions.

"BATH

009852/1568

Claims (1)

Patent claims: 1 Plant for electroslag remelting of metals, especially steels, with two vertical columns, on each of which an electrode holder is arranged so that it can be moved in the vertical direction, and only one liquid-cooled channel, into which melting electrodes can alternately be introduced by means of the two electrode holders, thereby * gek e η η ζ calibrates η et that around the longitudinal axes «of the two columns (30 or 30 *) an electrode holder (50 or 50) can also be pivoted in the horizontal direction, whereby the point of intersection of the two curved pivoting cradles (S ^ ₉ . Sg) between the. End points of the two swivel paths (S ^ y Sg) and the geometric longitudinal axis of the mold (10) at least during the remelting process approximately passes through this intersection point 2, system according to claim 1, with only one base plate, preferably made of copper, on which the metal block formed by the remelting process rests, characterized in that the center of the base plate (62) lies approximately on the vertical which is indicated by the ¹ The intersection of the two arcuate swivel paths (S ^, Sg) is thought to be drawn · ■ · 3 · Plant according to claim 1, characterized in that on one (30) of the two columns (30, 30 ·) the mold (10) together with a mold holder (20) in on in a known manner arranged displaceably in the vertical direction and preferably additionally in the horizontal direction is pivotable 4 .. System according to claim 1, characterized in that each electrode holder (50, 50 ') consists of one on the associated column (30, 30 ·) against twisting' κΙάώ§§ & η, in a vertical * Q09862 / 1S68 BATH ORIGINAL - 6 J- I 1383 ^Γ 202855 * Direction of sliding guide piece (51) and one on this rotatable pivot part (52) is composed, wherein a toothed ring (53) is fastened to the pivoting part (52), in which a toothed ring (53) rotatably mounted on the guide piece (51), e.g. by a Electric gear motor (55) drivable pinion (54) engages. 5 x installation according to claim 2, characterized in 'that the shell holders (20) secured from one to the associated column (30, 30') against rotation, preferably vertically displaceable guide piece (21) and, especially bifurcated from a rotatable on this formed pivoting part (22), with a toothed ring (24) attached to the pivoting part (22), in which a pinion (25) rotatably mounted on the guide piece (21), e.g. driven by an electric gear motor (26), engages. 6. Plant according to claims 4 and 5, characterized in that that the columns (30, 30 "), as known per se, are arranged in a fixed manner and preferably have a spline profile, e 1) r 6 8 h 1 t r i C 9 < Aktlenge s ell is patent office .BAD ORIGINAL Emptiest