EP2758190A2 - Walzanlage und -verfahren - Google Patents
Walzanlage und -verfahrenInfo
- Publication number
- EP2758190A2 EP2758190A2 EP12791075.0A EP12791075A EP2758190A2 EP 2758190 A2 EP2758190 A2 EP 2758190A2 EP 12791075 A EP12791075 A EP 12791075A EP 2758190 A2 EP2758190 A2 EP 2758190A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- caliber
- stand
- roll
- rolling mill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 168
- 238000000034 method Methods 0.000 title claims description 4
- 238000005259 measurement Methods 0.000 claims description 28
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 230000007935 neutral effect Effects 0.000 claims description 12
- 238000012937 correction Methods 0.000 claims description 6
- 239000000969 carrier Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
- B21B38/105—Calibrating or presetting roll-gap
Definitions
- the invention relates to a rolling mill, in particular a multi-stand rolling mill, with at least two rollers mounted in a roll stand for receiving rolling forces in a roll bearing, with means for displacing at least one roll with respect to the rolling mill stand and with means for determining the rolling mill Roller calibers, the determining means having a caliber reference and a space reference, and means for measuring the relative position between the caliber reference and the space reference.
- the invention relates to a rolling process in which rolls are made on-line taking into account measurement results of means for determining a rolling caliber to a desired rolling caliber.
- Such rolling and rolling processes are known per se, wherein the means for determining the rolling caliber in Anstellzylindern with which the rollers can be employed, are arranged and determine the respective rolling caliber on the cylinder position or on the position of the corresponding piston.
- the determination is made regularly via a room reference, which by definition is assumed to be spatially fixed, and via a caliber reference whose position serves as a measure of the position of the corresponding roller and thus as a measure of the rolling caliber.
- a generic rolling mill can be characterized in that the caliber reference and / or the space reference are arranged with respect to a force flow occurring between roller and roll stand peripheral to the power flow.
- the space reference is arranged outside a force introduction region in which the rolling forces are introduced into the rolling stand. This makes it possible to minimize the influence of stresses which are caused by the rolling forces. In addition, it has been found that this also maintenance problems can be minimized, as appropriate areas are often easier to access.
- the space reference is located outside the force introduction area of the roll being measured.
- each room reference is arranged outside a force introduction area in which rolling forces are introduced into the rolling stand. In this way, a space reference that is as fixed as possible can be provided, so that the corresponding measurement results are not or only minimally impaired.
- each space reference of at least one rolling stand in the vicinity of a neutral area of the rolling mill between two force introduction areas, in which rolling forces are introduced into the rolling stand, to be arranged on the rolling mill. This also minimizes the influence of rolling stresses or forces. In addition, this results in less maintenance problems.
- the term "in the vicinity” as used herein means that the space reference is located at twice the minimum thickness of the rolling stand or less or at least twice the minimum radial thickness or less from a neutral area
- a neutral area is subject to relatively little tension, so that the corresponding change in the stresses caused by rolling forces can exert less influence
- the "thickness of the rolling stand” in the present context is defined as the thickness of the rolling stand parallel to the pass line or in the direction the pass line of the rolling mill
- the "radial thickness” defined as the strength of the mill stand radially or perpendicular to the pass line both sizes in particular their minimum value a relatively reliable and practical measure for the important dimensions present in the respective rolling mill tions regarding the distribution of force.
- a caliber reference arranged peripherally of the force flow can be realized in a particularly simple and reliable manner if the caliber reference is arranged on a rolling force-free projection. The supernatant then follows without itself any tensions or moments to subject, the corresponding movement of the body on which the rolling force-free projection is arranged. It is advantageous here to arrange this rolling-force-free overhang as close as possible in the vicinity of the roll, for example on a rocker carrying the roll via a bearing or on a non-rotating assembly of the bearing itself.
- the caliber reference can be arranged less than a bearing diameter of the roller bearing away from the roller bearing. This is also independent of the other features in generic rolling plants accordingly advantageous. This ensures that the caliber reference is arranged as close as possible to the roller itself.
- the bearing body has a rocker with a serving as a bearing body bearing side, on which a displacement means for displacing the respective roller, such as the piston or the cylinder of a piston-cylinder unit acts, and with a guide side, wherein the Caliber reference is provided on the side facing away from the guide side of the bearing side.
- a displacement means for displacing the respective roller such as the piston or the cylinder of a piston-cylinder unit acts
- the Caliber reference is provided on the side facing away from the guide side of the bearing side.
- Such an arrangement is located peripherally of the power flow, so that the corresponding measurement error can be minimized.
- piston-cylinder units other displacement means, such as, for example, electromechanical displacement means, if necessary with a hydraulic lock, can be used.
- the measuring means may comprise a distance meter which measures the distance between the caliber reference and the space reference.
- a calibration step may be performed prior to rolling in which the changes in the measurement result of the measuring means are recorded in a calibrating manner as a function of the roll position.
- the distance meter is designed to be tactile or touching, so that it provides cost-effective and precise measurement results, in particular even in the presence of dust and steam.
- a generic rolling mill can be characterized in that the space reference is arranged separately from the mill stand. This ensures in any case that the space reference is independent of rolling stresses or forces, possibly with maintenance problems because of more difficult accessibility and because of attaching the measuring means to the room reference or the caliber reference must be taken into account, if the rolling mill or only the caliber reference and the assembly bearing the caliber reference should be removed for maintenance or retooling and returned to the rolling mill. On the other hand, the most accurate statement about the rolling caliber can be ensured in this way.
- the determination means or the measuring means can be calibrated. This then makes it possible to predict the reaction of the respective roller when the rollers are acted upon by the displacement means in accordance with the measurement results of the measuring means or determination means.
- the rolling mill has a control circuit for controlling the rolling caliber, which comprises the determining means, and input means of measurement results of the calibration as a control variable of the control loop, as a correction variable for the control variable and / or as a correction variable for the determining means or the displacement means on.
- the measurement results resulting from the calibration by means of the offline calibration means can be introduced into the control loop.
- these measurement results can only serve to correct the measurement results of the determination means or measuring means.
- a correction of the manipulated variable or a correction of the action on the displacement means or on their own control loop can take place.
- offline refers to work, activities or facilities that are only used when rolling is not carried out in the rolling mill.
- the offline calibration takes place inline, that is, when the respective rolls or associated rolling stands are arranged in the rolling line. Accordingly, it is also advantageous if the offline calibration can be arranged directly on the rolling mill or can be arranged to measure the rollers inline can. On the other hand, it is also conceivable to perform outline measurements in order to measure the rolled caliber directly.
- the position of the rollers is measured directly for offline calibration in order to be able to calibrate the measuring means or determination means as precisely as possible in this way.
- the hiring of the rollers can be carried out within a control loop to take into account measurement results of the determination means, so that the rollers are each made as optimal as possible.
- the control loop can also use measurement results from the rolling mill downstream workpiece measurements, such as pipe wall thickness measurements or cross-sectional measurements, as a controlled variable.
- rolling stand means any structural unit which applies and compensates for the forces involved in rolling and rolling, so a rolling stand can be provided and designed as a frame and structurally mobile unit for rapid changing operations Rather, the rolling stand can also be relatively rigidly connected to the rest of the rolling mill, so that changing operations such as, for example, replacement of rolls or other wearing parts require larger assembly activities.
- Figure 1 is a schematic side view of a rolling mill
- FIG. 2 shows a schematic front view of a roll stand which can be used in the rolling mill according to FIG. 1 with a reference support fixed independently of a roll stand;
- FIG. 3 shows a schematic front view of a further roll stand which can be used in the rolling mill according to FIG. 1 with a reference support fixed to the roll stand in a neutral area of the roll stand;
- FIG. 4 shows a schematic front view of a further roll stand which can be used in the rolling plant according to FIG. 1 with neutral areas of the roll stand on the roll stand
- FIG. 5 shows a schematic front view of a further roll stand which can be used in the rolling plant according to FIG. 1, with the roll stand in neutral areas of the rolling mill stand
- FIG. 6 shows a schematic front view of a further roll stand which can be used in the rolling plant according to FIG. 1, with the rolling stand in neutral areas of the rolling mill stand
- Rolling mill mounted reference carriers and eccentric bushes for adjusting the rollers
- FIG. 7 shows a schematic front view of a further rolling mill which can be used in the rolling mill according to FIG. 1 with reference carriers and eccentric bushes fastened independently of the roll stand for setting the rolls;
- FIG. 8 shows a section through a distance meter, in which in particular the measuring electronics can be removed and thus arranged outside a region with high temperature and / or high mechanical load.
- the rolling mill 1 shown schematically in FIG. 1 comprises a multiplicity of roll stands 20, each with rolls 30 mounted on the rolling stands 20.
- the rolling stands 20 are aligned along a pass line 2, so that a workpiece passes from one input side 12 along the rolls 30 Pass the pass line 2 to an output side 13 through.
- the space in each case between the rollers 30 is referred to as a rolling caliber and is therefore a measure of the extent to which the rollers 30 act on the respective workpiece.
- rollers 30 of the embodiment shown concretely in Figure 1 are mounted in rockers 45 as a bearing body 70, wherein the bearing body 70 is formed in a bearing side 46 of the rockers 45.
- the rockers 45 also have a guide side 47, which ultimately defines the possibilities of movement of the rocker 45 by the respective rocker 45 leads.
- the bearing side 46 and the bearing body 70 carries a roller bearing 35 which supports the roller 30 in each case.
- a projection 101 free from rolling force is arranged, which can be used as a caliber reference 54, as explained in more detail below with reference to the further exemplary embodiments.
- this no-rolling projection 75 and thus the caliber reference 54 is arranged less than the bearing diameter of the roller bearing 35 of the roller bearing 35. It is also immediately apparent that the caliber reference 54 or the no-rolling projection 75 is arranged with respect to a force flow occurring between the respective roller 30 and the roll stand 20, peripheral to the force flow.
- the rollers 30 each act on a force, such as in Figures 2 to 5 explained by way of example.
- a corresponding abutment surface on which the piston-cylinder unit 42 can engage is arranged far away from the non-rolling projection 75 or the associated caliber reference 54, so that the latter can be found peripherally of the force flow.
- other displacement means 40 such as, for example, electromechanical displacement means, if necessary with a hydraulic lock, can be used.
- three rollers 30 are arranged on the roll stand 20 and mounted adjustable in each case via swing, the employment is carried out by the piston-cylinder units 42, which on the one hand on the rockers 45 and on the other hand on the Support mill stand 20 and in turn take up the rolling forces and serve caliber employment.
- each force introduction areas 24, in which the supporting force and thus the rolling force is fed into the rolling mill 20 are supported on the roll stand 20.
- Each of the rockers 45 has a non-rolling projection 75, as already explained with reference to FIG.
- Spacer blades 60 which are supported on a carrier ring 78, which forms a space reference carrier 77, are respectively arranged on the roller force-free projections 75.
- a caliber reference 54 is arranged on each roller force-free projection 75, and a space reference 56 is arranged on the space reference carrier 77, which together with measuring devices 58 represented by the distance meters 60 form means 50 for determining the rolling caliber.
- the carrier ring 78 or the space reference carrier 77 is fastened independently of the rolling stand 20, so that the room references 56 are arranged separately from the rolling stand 20.
- the embodiment shown in Figure 3 corresponds in essential parts of the embodiments of Figures 1 and 2, so that dispensing with a renewed description of all the details.
- the carrier ring 78 is fastened to the rolling stand 20, which, however, takes place in neutral areas 25, which can be found in each case between two force introduction areas 24. In this way, voltages which could be routed into the space reference carrier 77 and which could lead to a displacement of the room references 56 can be reduced to a minimum.
- even a movable and thus displacements compensating attachment of the carrier ring 78 may be provided on the rolling mill 20.
- the space reference 46 is also arranged in each case outside of a force introduction region in which the rolling forces are introduced into the roll stand 20 in this arrangement.
- the arrangement shown in FIG. 4 corresponds essentially to the arrangement according to FIG. 3, but here a carrier ring 78 as a space reference carrier 77 has been dispensed with. Rather, individual support arms 79 are arranged in neutral areas 25 of the roll stand 20, which serve as space reference support 77.
- the room references 56 are arranged outside the force introduction areas 24 and thus peripherally the power flow.
- support arms 79 are located on the rolling mill 20 approaches that attached to neutral areas 25 and projecting into the interior of the roll stand 20, as support arms 79.
- the support arms 79 can also be integral with the rolling stand 20 be formed.
- the roll stand 20 according to FIG. 5 is merely a 2-roll stand, while the arrangements according to FIGS. 2 to 4 are each 3-roll stands. It is understood that in different embodiments, also rolling stands 20 with 4 and more rollers can be used accordingly.
- the exemplary embodiment illustrated in FIG. 5 does not differ further from the exemplary embodiment according to FIG. 4, so that repetitions for explaining equivalent components are dispensed with.
- FIG. 6 substantially corresponds to the arrangement of Figure 5, wherein as displacement means 40 in the embodiment shown in Figure 6 eccentric bushings 41 and caliber reference 54 surface areas of the eccentric bushes 41, which are coaxial with the axis of the roller with, be used.
- the eccentric bushes 41 are arranged on scaffold arms 21, which in turn are fixedly attached to the rolling stand 20, and accordingly, in the region of this fastening, force introduction areas 24 can be found in the rolling stand 20.
- the framework arms 21 may also be formed integrally with the rolling stand.
- the space reference carriers 77 and the carrier arms 79 are arranged independently of the rolling stand 20, as they already are by way of example based on the exemplary embodiment shown in FIG so that the room references 56 are unaffected by any rolling forces.
- the arrangement according to FIG. 7 which in most parts corresponds to the exemplary embodiment according to FIG. 6, the space reference carriers 77 and the carrier arms 79 are arranged independently of the rolling stand 20, as they already are by way of example based on the exemplary embodiment shown in FIG so that the room references 56 are unaffected by any rolling forces.
- a measuring tip 61 with a measuring contour 62 adapted to the movement of the references 54, 56, a measuring foot 63 opposite this measuring contour 62 or the measuring tip 61 and one the distance between the measuring tip 61 and the measuring foot 63 holding spring 64 is provided and in which in particular the measuring electronics spatially removed and therefore outside of a high temperature and / or high mechanical stress, such as this during rolling usually in the vicinity of the roller to find is, can be arranged.
- the distance meter 60 has a waveguide 65 which can interactively measure the respective distance between measuring tip 61 and measuring foot 63 with a magnet 66, wherein the actual evaluation of the measurement result determined via the waveguide 65 can then take place far outside ,
- the distance meter 60 is attached, for example, with its measuring foot 63 either to the caliber reference 54 or to the room reference 56, so that the measuring tip 61 is placed in each case on the associated counterpart of this caliber reference 54 or the room reference 56.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011114143 | 2011-09-23 | ||
PCT/DE2012/000938 WO2013041084A2 (de) | 2011-09-23 | 2012-09-24 | Walzanlage und -verfahren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2758190A2 true EP2758190A2 (de) | 2014-07-30 |
EP2758190B1 EP2758190B1 (de) | 2018-09-12 |
Family
ID=47225851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12791075.0A Active EP2758190B1 (de) | 2011-09-23 | 2012-09-24 | Walzanlage und -verfahren |
Country Status (4)
Country | Link |
---|---|
US (2) | US9764368B2 (de) |
EP (1) | EP2758190B1 (de) |
DE (1) | DE112012003956B4 (de) |
WO (1) | WO2013041084A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020206533A1 (de) | 2020-05-26 | 2021-12-02 | Kocks Technik Gmbh & Co Kg | Walzgerüst mit individueller Verformungskompensation |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2224833C3 (de) | 1972-05-20 | 1981-05-21 | Vereinigte Flugtechnische Werke Gmbh, 2800 Bremen | Vorrichtung zur Messung des Spaltes eines Arbeitswalzenpaares für ein Walzgerüst |
US3906767A (en) * | 1974-05-31 | 1975-09-23 | Mitsubishi Heavy Ind Ltd | Hydraulic roll-gap control system |
DE2646328A1 (de) | 1976-10-14 | 1978-04-20 | Krupp Gmbh | Beruehrungslose lagevermessung stillstehender bzw. bewegter rotierender koerper |
DE19500336A1 (de) * | 1995-01-07 | 1996-07-11 | Schloemann Siemag Ag | Verfahren zur Regelung des Walzspaltprofils |
BR0214472B1 (pt) * | 2001-12-12 | 2010-09-21 | dispositivo para medir o espaço entre os cilindros trabalhadores de um montante de cilindros para laminação a quente ou para um montante de cilindros para laminação a frio. | |
DE10202526B4 (de) | 2001-12-12 | 2022-02-03 | Sms Group Gmbh | Einrichtung zur Messung des Walzspaltes zwischen Arbeitswalzen eines Kalt- oder Warmwalzgerüstes |
DE102007048686A1 (de) | 2007-10-10 | 2009-04-16 | Sms Demag Ag | Positionsgeber zur Anstellhubwegmessung eines Kolben-Zylinder-Systems |
DE102008037756A1 (de) | 2008-08-14 | 2010-02-18 | Sms Siemag Aktiengesellschaft | Positionsgeber für hydraulische Anstellsysteme in einem Walzgerüst |
-
2012
- 2012-09-24 DE DE112012003956.4T patent/DE112012003956B4/de active Active
- 2012-09-24 WO PCT/DE2012/000938 patent/WO2013041084A2/de active Application Filing
- 2012-09-24 US US14/346,393 patent/US9764368B2/en active Active
- 2012-09-24 EP EP12791075.0A patent/EP2758190B1/de active Active
-
2017
- 2017-07-19 US US15/653,612 patent/US10654084B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013041084A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE112012003956A5 (de) | 2014-06-18 |
EP2758190B1 (de) | 2018-09-12 |
US20140230509A1 (en) | 2014-08-21 |
US10654084B2 (en) | 2020-05-19 |
DE112012003956B4 (de) | 2024-03-07 |
US9764368B2 (en) | 2017-09-19 |
US20170312799A1 (en) | 2017-11-02 |
WO2013041084A2 (de) | 2013-03-28 |
WO2013041084A3 (de) | 2014-01-23 |
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