EP1327486B1 - Rolling mill for rolling wire or small sections - Google Patents

Abstract

Rolling mill, has alternating horizontal and vertical paired calibration rollers (1H-7H, 2V-8V) at the rolling stands of the leading and intermediate lines. The oval caliber of one roller in a pair is at an axial gap from the round caliber of the other roller. The roller with one caliber and the other roller, in a pair, can be moved in a lateral shift (P1) in and out of the rolling line (WL).

Description

The invention relates to a rolling mill for rolling wire or fine iron, in which the rolling stands of the front and intermediate road, successively have alternating horizontal and vertical roller pairs. Generic rolling mills of this type (EP 0 313 930) are consistently with a Kaliberanzichfolge Oval-Round operated, although operating with a tipping oval-oval below Other advantages in the decrease and the elongation behavior of Walzgutstranges bring with it. The reason for forgoing such benefits is in the fact that the mode of operation with an oval-round caliber sequence allows with the rolling mill rolling stock strands of different round diameter sizes to roll, by the rolling stock within the rolling mill in a more or less large number of existing rolling stands is formed and, after the desired round dimension has been achieved, the following Rolling mills of the road without further influence of shape undergoes and the further processing can be supplied.

The invention is based on the object, a roller mill of the generic type To create type that allows the benefits of operating with an oval oval Caliber sequences with those of the oval-round arrangement of the caliber sequence to connect.

This object is achieved in that the oval caliber of the rolls of a pair of rollers each, with axial distance a round caliber is assigned. there can the round caliber of the oval caliber selected pairs of rolls of the next series Roll pairs are assigned in the rolling mill. Within the next series The pairs of rollers can only the roller pairs of a first section a caliber, starting with an oval caliber, followed alternately by each Ovalkalibem and Rundkalibem exhibit. Furthermore, as the invention provides, the last of the following series of roller pairs of roller mill only one Have round caliber. According to the invention, one and the other can continue Caliber of a pair of rollers by axial transverse displacement of the rollers in the Roll line and be brought out of this, or by transverse displacement the rolling mill itself. Finally, one, the respective oval caliber one Roller pair downstream, the, emerging from this roll train optionally leading into the oval caliber or the round caliber of the following pair of rollers Steering be provided.

The most essential, achievable with the invention advantage is in addition to the utilization the advantages of the tapping oval-oval in that in the thus formed Walzstraße each rolling stand of the following series of rolling stands a Zwischenrund can be produced for a subsequent finish rolling. The oval-oval series allowed because of the better stretch depending on the conditions in the pre- or Intermediate road, to get along with comparatively fewer scaffolding. If necessary. every scaffold of the street next to the oval caliber has a round caliber stands comparatively a considerably larger number of round profiles for finish rolling to disposal. This can then possibly. With a smaller number of finishing stands be performed.

Further advantages result from the fact that the round caliber of the roller pairs in wear less the assembly of the invention because they only for Generation of the required size of a round profile are claimed.

Finally, the total number of rolling stands of a rolling mill can be both straight as well as odd, while this number in the known Oval-Rundkaliberfolge must always be an even number.

Figur 1

eine Kaliberfolge Oval-Rund in einer Walzenstraße in schematischer Darstellung,

Figur 2

eine Kaliberfolge Oval-Oval mit parallel dazu verlaufender Kaliberfolge Rund-Rund und

Figur 3

eine Kaliberfolge, teilweise Oval-Rund, gefolgt von einer Kaliberfolge Oval-Oval mit einer parallel dazu verlaufenden Kaliberfolge Rund-Rund, ebenfalls in schematischer Darstellung

The invention will be explained in more detail with reference to the embodiments illustrated in the drawings. In the drawing show

FIG. 1

a caliber sequence oval-round in a roller mill in a schematic representation,

FIG. 2

a caliber sequence oval-oval with parallel running caliber sequence round-round and

FIG. 3

a caliber sequence, partly oval-round, followed by a caliber sequence oval-oval with a parallel running caliber sequence round-round, also in a schematic representation

As can be seen from Figure 1, are pre-profiled Walzgutstränge WSR or WSQ the roller mill WS I. fed, their rolling stands, not shown an alternating sequence of horizontal and vertical roller pairs 1. H, 2. V, 3. H, 4. V, 5. H, 6. V, 7. H, 8. V exhibit. Of these pairs of rollers are the horizontal roller pairs 1. H, 3. H, 5. H, 7. H each with an oval caliber and the vertical roller pairs 2. V, 4. V, 6. V, 8. V each equipped with a round caliber.

The round or square profile WSR or WSQ of, in the first horizontal roller pair 1. H introduced Walzgutstrangs and formed into an oval, is in the following pairs of rollers alternately to a round and again formed into an oval and leaves the roller train, from the vertical roller pair 8. V shaped as, for the finish rolling certain round rod. This caliber arrangement the roller mill WS I. allows the round bar depending on the desired Each time, always after its passage through one of the vertical roller pairs 2. V to 8. V at empty passage through the subsequent pairs of rollers from the roller mill and supply for further processing.

From Figure 2 shows that the pre-profiled rolled strand WSR or WSQ a Rolling line WS 11 is supplied, their rolling stands, not shown a Sequence of horizontal and vertical roller pairs 1. H, 2. V, 3. H, 4. V, 5. H, 6. V, 7. H, 8. V exhibit. These pairs of rollers are, except for the first and last Roller pair 1st H. and 8. V all with horizontal or vertical oval calibers and, axially offset next to these arranged round calibers equipped. The last of the pairs of rollers has a round caliber behind this series of oval calibers on. The, equipped with these two adjacent calibers, Roller pairs 2. V, 3. H, 4. V, 5. H, 6. V, and 7. H, not shown in a manner not shown in the direction of the double arrow P1 transverse to the an arrow WL indicated rolling line into this and move out of this. Instead, WL can also be behind in the direction of this rolling line the Ovalkalibem not shown, indicated by oblique arrows guiding devices be arranged, the emerging from these calibers beginning of Walzgutstrangs in the lying next to the following oval caliber round caliber to steer.

Unlike the arrangement of Figure 1, in which the round rod only after one Passage through one of the round caliber of the caliber sequence from the molding process taken out and supplied to the further processing devices Here it is possible to place the rolling rod behind each of the oval calibres in one Mold round bar and supply the processing equipment.

The arrangement of Figure 3 differs from that of Figure 2 in that the first pairs of rolls of the rolling mill WS III. the arrangement of Figure 1 accordingly and the subsequent pairs of rollers of the sequence of the arrangement according to FIG. 2.

Reference numeral Directory

WSR

Rolled material strand (round)

WSQ

Rolled strand (Quartrad)

WS 1

rolling train

WS 2

rolling train

WS 3

rolling train

1. H

Horizontal roller pair

3.H

Horizontal roller pair

5. H

Horizontal roller pair

7. H

Horizontal roller pair

2. V

Vertical roller pair

4. V

Vertical roller pair

6. V

Vertical roller pair

8. V

Vertical roller pair

P 1

double arrow

WL

Arrow (rolling line)

Claims (6)

1. A rolling mill for rolling wire or small sections, in which the roll stands of the blooming and the intermediate train (WSI, WSII, WSIII) contain, in alternating succession, horizontal and vertical grooved roll pairs (1H, 2V, 3H, 4V, 5H, 6V, 7H, 8V),
   characterized in that
   a round pass is respectively assigned and axially spaced apart from the grooved roll pairs with an oval pass.
2. The rolling mill according to Claim 1,
   characterized in that
   the round passes are assigned to the oval passes of selected roll pairs of the downstream row of roll pairs in the roll train.
3. The rolling mill according to Claim 1,
   characterized in that
   within the downstream row of roll pairs, the roll pairs of a first section only have one respective pass, namely beginning with an oval pass that is alternately followed by oval passes and round passes, respectively.
4. The rolling mill according to Claim 3,
   characterized in that
   the respectively last roll pair of the downstream row of roll pairs of the roll train only has a round pass.
5. The rolling mill according to Claim 1,
   characterized in that
   one and the other of the two passes of a roll pair can be moved into and out of the rolling line by means of an axial transverse displacement of the rolls or (a transverse displacement) of the roll stands.
6. The roll train according to Claim 1,
   characterized in that
   a guiding device is arranged downstream of the respective oval pass of a roll pair and selectively directs the rolling stock emerging therefrom into the oval pass or the round pass of the following roll pair.

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