CZ20899A3 - Device for descaling rolled material - Google Patents

Abstract

Scale Sprayer for Scale Removal from Rolled material, in particular profiles (4), consisting of at least one of a descaling agent distributing element (1) from which it is disposed the number of pairs (3) comes out, quickly and easily adaptable to various geometry and size profiles changes in the rolling program, has a divider (1) stored rotatably and lockable in work turns wherein the spikes (3) are spaced apart groups arranged radially to the distributor element (1) (5) nozzles (3) that extend along the axis of rotation of the distributor element (1), and one of the groups (5) of the nozzles (3) is adaptable to the cross-sectional shape of the passing profile (4), and is rotatably adjustable

Description

EQUIPMENT FOR REMOVAL FROM ROLLED MATERIAL

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing scale from rolled material, in particular profiles.

BACKGROUND OF THE INVENTION

From German Patent No. 1 044 008, a scale removal device is known, consisting of a beam, on which a spray device with a plurality of spray nozzles is arranged, the nozzles being pluggable and detachable in groups by means of a control device. Water is sprayed under pressure to remove the scale.

DE 31 46 656 A1 and DE 31 47 878 disclose devices for cooling flat-rolled material. In this case, manifolds are arranged transversely above and / or below the rolling stock which are again provided with openings over the maximum width of the rolling stock to which the guide tubes are connected. A laminar flow of cooling water over the width of the rolled material can be provided by the flaps located through the openings. DE 31 47 878 is based on a manifold with a plurality of outlet openings which can be disconnected in groups from the coolant inlet for varying the effective cooling width of the sides. This is achieved

76758 (76758a.doc) • · ·

by means of a stationary outer manifold tube and an inner tube arranged therein, both tubes being provided with guide tubes for spraying rolled material with cooling water. In the case of the inner tube, the guide tubes are limited to the marginal region of the cooling width and serve additionally to cool the wide strip.

Especially for the hydraulic removal of scale from rolled material, here in particular profiles with different geometries and cross-sectional sizes, it is known to use washer rings provided with washer nozzles. The spray elements of one ring are always adapted to the cross-section of the profile and are replaceable according to the profile being processed. However, this requires the re-scaling of the washer device by changing the washer ring or rings before each change of the rolling program. This solution is very time consuming and expensive.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION The present invention is based on the object of providing a descaling device of rolled material, in particular of profiles, which is quickly and easily adaptable to different geometries and profile sizes as the rolling program changes.

This object is solved by the features of the device according to claim 1. Preferred embodiments of the invention are apparent from the dependent claims.

The core of the invention is a device consisting of one or more distributor elements rotatable about their longitudinal axis through which the rolled workpiece passes. On

76758 (76758a.doc), the nozzle groups are preferably spaced apart from one another by a plurality of nozzles, preferably a series of nozzles, one nozzle row providing a spray pattern optimally adapted to the cross-section of one type or size. By changing the rolling program and subsequently the profile geometry, it is possible to easily and quickly adapt the descaler to the new conditions by rotating the distribution elements around their axis and locking them in rotation that corresponds to the spray position for the respective nozzle row.

In the case of the distributor element, the tubes are parallel-oriented, concentric tubes, the jacket surfaces of which have openings in which the nozzles are located, the individual tubes being capable of being supplied independently of one another.

Thus, when changing the rolling and scaling program, the tube bundle can always be rotated and locked in the position in which it faces the profile those nozzles which, in terms of number, distance from the profile and spray angle, are adapted to its particular cross-sectional shape.

Each individual tube may be provided with its own connection device for the descaling medium supply. By means of this separate connection device, the pipe which is in operation can be connected to the water or air inlet during the processing of a further cross-section of the profile, which facilitates handling and ensures rapid conversion.

The nozzle group is preferably a series of nozzles running parallel to the axis of the distributor element, the length of which corresponds to the maximum profile width.

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9 9 9 9 9 99 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 99 99

Adapting the nozzles to different geometries and cross-sectional sizes is preferably done by selecting nozzle bodies of different lengths and the number of nozzles in the nozzle row. Furthermore, the adaptation can be carried out by means of a spacing between the nozzles.

Preferably, the scale removal device has two manifold elements, each consisting of more, for example four or five, parallel tubes. The two tube bundles are arranged above and below the scaled material so that the axes of the tubes extend transverse to the direction of passage.

Each tube has a plurality of nozzles, the plurality of nozzles of the tubes being offset from one another and running parallel to the axis of the tube. If four tubes are arranged, the rows of tube nozzles are preferably offset by 90 °.

Water is generally used as a descaler. It is also conceivable to remove scales by compressed air.

BRIEF DESCRIPTION OF THE DRAWINGS

Further details and advantages of the invention will become apparent from the claims and the following description, in which: FIG.

FIG. 1 shows one embodiment of a manifold in the form of a bundle of tubes in cross section perpendicular to the axis of rotation;

FIG. 2 shows a descaling device in an example of FIG

76758 (76758a.doc) 9 9 9 9 9 9

9 9

9 9 9 «

9 * 9 9

9 9 9

999 999 by two cross-sectional elements perpendicular to the axis of rotation;

FIG. 3 is a front view of the descaling device of FIG.

in the direction of profile passage.

DETAILED DESCRIPTION OF THE INVENTION

Giant. 1 shows in cross-section one embodiment of a distributor element (in the following referred to as a spray bar) in the form of a tube bundle, which here consists of four tubes arranged in parallel (shown in dashed lines). The tubes 2 serve to supply the descaling means, here the water which is supplied under pressure via the nozzles 2 to the profile 4. By rotating the spray bar 2 about its axis of rotation, suitable rows of nozzles 2 can always be adjusted when the rolling program is changed. profile geometry.

The tubes themselves are connected to the plate 6 at their end edges for stabilization. Only one nozzle is visible from the rows of nozzles extending parallel to the axis of rotation. Holes 2 are provided in the tube housing in which the individual nozzles are located. The nozzles themselves consist of a longitudinally formed nozzle body 3a with an outlet opening 2b. Depending on the profile to be processed, it differs in length and configuration (not visible). Variations in the position angle are also possible.

Giant. 2 shows a descaling device, a so-called descaler, comprising two spray bars 1a and 1b. which are always arranged above

76758 (76758a.doc) • 9 9 9 i

4> 9 9 and below profile 1. The rolled material, for example a rolled ingot, is conveyed to the scaler by means of rollers & conveyor.

The front view of the scales sprinkler in the direction of passage of the profile is shown in FIG. 3. The profile 4, here the I-shaped beam, passes through a descaling station consisting of upper and lower rotary spray bars 1a and 1b (shown schematically) as well as two adjustable spray devices 9a and 9b for the outside of the 1Ώ warheads. profile. The descaling of the inner sides 11 of the upper and lower edges 12, 13 of the heads, and the surfaces of the webs 14 is achieved by means of two rotating spray bars 1a and 1b.

In the working position, only one tube of the tube bundle, with its respective row of nozzles, is operated in this case, the tube 21a and 21b. The upper spray bar 1a shows that the tube 21 in operation is connected to the water supply line 16 via the connection device 15. When the rolling program is changed, the water supply is interrupted for a short time and the water supply is disconnected from the spray pipe 21 which has been in operation so far. The spray bar is brought into a new working rotation and locked. The spraying tube, which is in operation, is connected to the water supply via the connection device and is supplied with water. This disguise is simple and quick to implement, and requires only a few minutes.

On the lower spray bar 1b, four different rows of nozzles are visible, which in this embodiment always stand at right angles to each other. Obviously, both the individual nozzles by the different length of the nozzle body and the number of nozzles are adaptable to the respective profile geometry. Further, they may be

76758 (76758a.doc) · 99 9 99 9 · ····· 9 · 99 9999

9,999 9,999,999

9 9 · 9 99

9999 999 99 999 99 ·· The nozzles are arranged at different distances from each other (pipe 21).

The spray bars 9a and 9b for spraying the outer sides of the profile heads 10 in this embodiment have scales for the nozzles 17 and 17b of the feed line, optionally 18 or

12.

The measures of the invention are not limited to the exemplary embodiment. Manifolds with fewer or more tubes than four are possible. Preferably, the distribution elements are arranged transversely to the direction of passage of the profile, but may also have a different angle.

Represented by:

Dr. Miloš Všetečka v.r.

76758 (76758a.doc)

JUDr. Milos Všetečka - 8 attorney

120 00 Prague 2, Halkova 2

Claims (6)

PATENTOVÉ Apparatus for removing scale from rolled material, in particular profiles, comprising at least one divider of a descaling agent from which a plurality of nozzles consisting of a nozzle body and an outlet opening emerge, wherein the rolled material is conveyed around the divider, the distributor element (1) is rotatably mounted and is lockable in working rotations such that the nozzles (3) form a plurality of spaced nozzle groups (5) spaced radially to the distributor element, which extend along the axis of rotation of the distributor element, and one of the groups (5) the nozzles are adaptable to the cross-sectional profile of the passing profile (4), and are rotatably adjustable. Apparatus according to claim 1, characterized in that the distribution element (1) is a bundle of tubes (2) running parallel to one another, the casing surfaces of which have openings (7) in which the nozzles are arranged, the individual tubes (2) can be powered independently of each other. Device according to claim 2, characterized in that each of the tubes (2) is provided with its own connection device (15) for the supply line (16). 16 76758 (76758a.doc) Apparatus according to claim 1, characterized in that the nozzle group (5) is a nozzle row running parallel to the axis of the distributor element, the length of which corresponds to the maximum profile width, the spray pattern being adapted to the cross-section profile. Device according to one of the preceding claims, characterized in that two distribution elements (1a, 1b) are provided, each consisting of four parallel pipes (2) which are arranged above and below the scaled material so that the axes of the pipes extend transverse to the direction of passage, and each tube (2) has a row (5) of nozzles, the row of nozzles of the tubes being offset by 90 ° to each other and running parallel to the axis of the tube. Device according to any one of the preceding claims, characterized in that the descaling agent is water or compressed air.