EP2543449A1 - Procédé destiné à la fabrication dýune bande de magnésium - Google Patents
Procédé destiné à la fabrication dýune bande de magnésium Download PDFInfo
- Publication number
- EP2543449A1 EP2543449A1 EP12172202A EP12172202A EP2543449A1 EP 2543449 A1 EP2543449 A1 EP 2543449A1 EP 12172202 A EP12172202 A EP 12172202A EP 12172202 A EP12172202 A EP 12172202A EP 2543449 A1 EP2543449 A1 EP 2543449A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- temperature
- magnesium
- coil
- rolling
- 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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 49
- 239000011777 magnesium Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 48
- 230000033228 biological regulation Effects 0.000 claims abstract description 4
- 238000009529 body temperature measurement Methods 0.000 claims description 13
- 239000000314 lubricant Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 15
- 238000012545 processing Methods 0.000 description 8
- 238000009966 trimming Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
- B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/34—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
-
- 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
- B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
Definitions
- the present invention relates to a method for producing a thin magnesium strip in a finishing roll device provided with heating and / or insulation means based on a coil fed to the finishing roll device, in which the magnesium strip is conveyed in reversing operation by a roll gap formed in a roll stand between two work rolls in that two reels which receive the rolling stand between them are operated alternately as uncoiling and reeling.
- magnesium sheet is suitable for the production of vehicle bodies, the magnesium sheet having strength properties which are comparable to those of aluminum sheet, has a low weight, so that here a corresponding potential for further ways to save energy in the operation of motor vehicles in addition the development of new drive concepts exists.
- magnesium sheet has turned out to be comparatively complicated in comparison to the production of steel or aluminum sheet, since magnesium proves to be brittle due to its hexagonal lattice structure at the processing temperatures usually present during cold rolling, so that the successful production of magnesium sheet adherence to a defined Temperature range, which is approximately between 230 ° C and 450 ° C, is necessary in order to use the achievable in this temperature range relative ductility of the material for processing can.
- a finish rolling device As part of a production line for producing a magnesium strip, a finish rolling device is known in whose operation various measures are used to maintain an elevated temperature level of the wound to a coil magnesium tape after entering the production rolling device.
- winding tubes are provided on the reels of the finishing roller device, which form an outer insulation device, so that arranged on the reel mandrel magnesium tape is covered by the isolation devices to keep a temperature loss of the previously heated magnesium tape in the coiler as low as possible.
- a continuous furnace is arranged in the known finishing roller device between the rolling mill and a coiler, which allows heating of the magnesium belt during the reversing operation.
- the present invention is therefore an object of the invention to provide a method for the production of a thin magnesium tape, which takes more account of the known relationship between the material temperature of the magnesium tape and the processability of the magnesium tape during the rolling process, so that on the one hand the production of a thin magnesium tape with high material quality and On the other hand, the most effective possible production of such a magnesium tape is possible.
- the inventive method has the features of claim 1.
- the belt temperature of the magnesium belt is measured and used as an input variable in the regulation of the rolling process and / or control of the roll stand.
- the inventive method is based on that a Dependence is made between the material temperature of the magnesium strip and the process parameters, such that, for example, at a comparatively low temperature of the magnesium strip, a comparatively higher strip speed and / or thickness decrease is selected in the processing of the magnesium strip, as is the case with a comparatively higher material temperature, so that about depending on the material temperature, the rolling strip speed and / or thickness decrease in the individual rolling passes may be different.
- the direct temperature measurement of the strip material during the implementation of the process provides the opportunity to control the rolling process so that to achieve a constant temperature of the strip material throughout the rolling process or to achieve the lowest possible temperature fluctuations, the heating devices and / or insulation devices of the finishing roller device accordingly to influence or to control in their performance.
- a temperature as constant as possible the occurrence of stresses in the rolled strip, which go back to temperature differences in the rolled strip, can be largely avoided.
- the measured strip temperature may be used as an input variable in the regulation of the temperature control of the work rolls and / or back-up rolls.
- the temperature measurement takes place in the region of the nip. This can be done on the side of the nip, where the rolled strip enters the nip, and / or on the side of the nip, where the rolled strip exits the nip, in particular a temperature measurement on both sides of the nip and thereby determined temperature difference conclusions in the way and the scope of subsequent measures for a tempering or changing the process parameters of the rolling process allows.
- the temperature measurement takes place according to a preferred embodiment of the method at least two points of a transverse to the strip running direction temperature measuring axis, in the Regulating the rolling process or the control of the rolling stand, a temperature gradient across the strip running direction are taken into account.
- a measurement of the belt speed and / or the belt thickness takes place, for example, to reduce the rolling performance of the finishing roller device by reducing the belt speed in the case of a measuring temperature lying above the ideal processing temperature.
- the amount and / or distribution of the lubricant application in dependence on the belt temperature can be such that falls below a desired Target temperature of the magnesium tape, the amount of lubricant is reduced to counteract further cooling, or a lubricant distribution can be selected, which takes into account a non-uniform temperature distribution across the strip running direction. It is assumed that the application of lubricant basically leads to a cooling of the material strip.
- the measured values determined during the flatness measurement can also be used to influence the lubricant application, since the lubricant distribution can influence the roll gap geometry.
- the temperature values determined during the temperature measurement can be referred to as Measure for a change in the insulating effect of the isolation devices are used, for example, such that serving as insulation devices, the reel device or the rolling mill covering hood devices are at least partially, for example, by pivoting a housing part, controlled in their isolation effect reduced.
- the heat dissipated controlled a heat storage and / or heat exchangers are supplied and, if necessary, fed back into the process or used for another heating purpose.
- the temperature measuring device with which the actual strip temperature is determined, is used to guarantee a defined, sufficiently high rolled strip temperature, in particular in the last pass, in order to postpone the trimming of the rolled strip until the end of the rolling process. If it is assumed that the last rolling pass is defined by the fact that the rolled strip has reached a predetermined strip thickness, then the trimming device can be activated when the defined strip temperature is defined depending on the desired strip thickness, ie in the last pass. Depending on the thickness of the rolled strip, it may be advantageous to make the trimming on the side of the nip where the rolled strip enters the nip and / or on the side of the nip where the rolled strip exits the nip.
- the trimming in a comparatively early stage of the rolling process is performed to ensure that the formation of edge cracks in the rolled strip, given in particular at a comparatively low rolling strip temperature and thin rolled strip edges is, is thereby avoided that occurs before reaching the critical rolling strip thickness, a trimming of the rolled strip. From the early trimming resulting naturally correspondingly large material losses, as early in the rolling process removed edge material is no longer available as material for subsequent rolling.
- Another possibility for reducing material losses in the production of a thin magnesium strip is to arrange a band end detector in the area of the strip entry, which enables a complete unwinding of the strip from a coiler during the rolling process at the end of a rolling pass , characterized in that the tape end is detected via a tape end sensor just before the nip and after detecting the tape end, the rolling direction is switched and the tape end is rewound.
- the complete unwinding of the strip end from the coiling device can be effected as a function of the temperature measurement.
- the lengths of the cut off after completion of the rolling process strip ends ie a corresponding scrap content can be reduced to an absolute minimum, which is ensured due to the temperature monitoring of the rolling strip temperature according to the invention, that in the region of the rolling end processing of the rolled strip in a suitable rolling belt temperature is carried out and thus immediately adjacent to the rolled strip a corresponding material quality of the magnesium tape is ensured.
- finishing roller device 10 As shown in the drawing, comprising a finishing roll device 10 as essential components of a rolling stand 11 and two rolling mill 11 between them receiving reels 12, 13, which together with the roll stand on a common floor level fourteenth are arranged.
- the finishing roller device 10 is supplemented by a preheating furnace 15, which in one embodiment is arranged as an overhead furnace above and at a distance from the floor level 14.
- a coil conveyor 17 Below the corridor level 14 there is provided a coil conveyor 17 provided with a horizontal conveyor 16 and associated with two coil handling devices 18, 19 arranged below the coilers 12, 13, each having a vertical conveyor 20.
- both the two reeling devices 12, 13 and the rolling stand 11 are each provided with a hood device 21 or 22 in the exemplary embodiment shown.
- the hood devices 21 of the reeling devices 12, 13 each have a co-passage opening 23 which, in the case of the reeling device 13 arranged on an inlet side 24 of the rolling stand 11, is opposite the preheating furnace 15 and in the case of the reeling device 12 arranged on an outlet side 25 of the rolling stand 11 is disposed opposite a coil tray 26.
- Both hood devices 21 furthermore have in each case the corridor plane 14 facing coil passage openings 40, 41.
- the hood devices 21 are provided in their interior with heaters 27, which are formed for example as a heat radiator and aligned so that they emit heat energy in the direction of a coil receiving device 28, such that in the case of one on the respective coil receiving device 28 of the coiler 12 and 13 arranged coils 29 is applied to the coil wound magnesium tape 30 and the coil receiving device 28 within the hood device 21 with heat energy.
- heaters 27 are formed for example as a heat radiator and aligned so that they emit heat energy in the direction of a coil receiving device 28, such that in the case of one on the respective coil receiving device 28 of the coiler 12 and 13 arranged coils 29 is applied to the coil wound magnesium tape 30 and the coil receiving device 28 within the hood device 21 with heat energy.
- the rolling mill 11 associated hood device 22 is formed in the present case in the manner of a vapor hood and forms a arranged at the upper end of the roll stand 11 shield or Reflection device for heat energy emitted in the area of the roll stand 11.
- the rolling stand in the present case has two work rolls 32, 33 defining a roll gap 31 and two support rolls 34, 35 supporting one work roll 32, 33 each.
- both heaters 37 are arranged in pairs opposite each other, wherein the support rollers 34, 35 are located between the heaters 37 and thus by means of the heaters 37 can be acted upon with thermal energy, as well as heatable, ie heating or arranged coolable work rolls. Notwithstanding the arrangement of the heater 37 on the frame 36, it is also possible to combine them with the hood device 22 of the roll stand 11.
- a coil 29 heated or preheated in the preheating furnace 15 is transferred to a coil or coil carriage 38 arranged below the preheating furnace 15. Subsequently, the coil carriage is positioned on the floor level 14 under the coil receiving device 28 of the arranged on the inlet side 24 coiler 13 and transferred by receiving a coil 39 of the coil 29 in the coil receiving device 28 to the coiler 13. During the transfer, the coil carriage 38 moves with the coil 29 into the hood device 21 through the coil passage opening 23 formed on the hood device 21.
- the representation chosen in the drawing corresponds to a phase in the course of an executed engraving, in which about half of the originally arranged on the coil 29 magnesium tape 30 was transferred to the arranged in the coiling reel device 12 arranged coil 39.
- a defined number of passes are carried out in reversing operation, so that the reeling devices 12 and 13 are operated alternately as uncoiling and reeling.
- the entire length of the magnesium strip 30 is located on the reel 39 arranged in the reeling device 12 so that the reel 29 arranged in the reeling device 12 is transferred from the reel receiving device 28 of the reeling device 12 to the co bunding carriage 43 arranged on the outlet side 25 is then conveyed out through the Coil thoroughly trecsö réelle 23 with the coil 29 from the hood device 21 for transferring the coil 29 from the coil carriage 43 to the coil tray 26th
- a new coil 29 can be transferred from the preheating oven 15 by means of the bundle wagon 38 to the inlet-side coiler 13 on the inlet side 24.
- the empty reel 39 of the reel device 13 is removed by the reel handling device 19 and fed to the reel-supplying device 17.
- the finished rolled coil is conveyed to the coil tray 26 on the outlet side 25 by means of the bundle carriage 43 and a coil 39 provided in the coil supply device 17 and preheated by a heater 44 provided on the coil supply device 17 is inserted into the coil receiving device 28 of the coiler 12.
- the coil 39 is exchanged by means of the coil handling device 18, 19 for conveying in a transfer position 45 by means of the horizontal conveyor 16 of the coil providing means 17 against the previously wound in the coiler 12 coil 29.
- the bobbin handling devices 18, 19 each have a vertical conveyor 20 arranged below the bobbin receiving device 28 of the reeling devices 12, 13.
- the hood device 22 of the roll stand 11 is formed so that it between the reeling devices 12, 13 formed conveyor line covered so that the hood device 22 not only forms a shield against heat radiation in the field of rolling stand 11, but also in the area of the entire finishing roller device 10.
- a speed sensor 50 and a temperature sensor 51 are provided are arranged above and below the magnesium belt 30, and a flatness measuring roller 52, which as Deflection pulley is formed and over which the magnesium belt 30 is passed.
- a band end detector 57 which makes it possible to switch the band running direction when a band end is detected.
- a strip thickness measuring device 53 is also upstream of the roll gap 31 . Also upstream of the roll gap 31 .
- a strip thickness measuring device 53 with a measuring gap 54, through which the magnesium strip 30 is passed.
- a lubrication device 56 is provided on both sides of the nip 31 and this immediately opposite, which allows loading of the magnesium tape 30 with a trained example as a spray lubricant application.
- a trimming device 55 is arranged between the reeling device 12 serving as a reeling device in the last pass and the rolling stand 11.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011078829A DE102011078829A1 (de) | 2011-07-07 | 2011-07-07 | Verfahren zur Herstellung von Magnesiumband |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2543449A1 true EP2543449A1 (fr) | 2013-01-09 |
EP2543449B1 EP2543449B1 (fr) | 2014-01-15 |
Family
ID=46458165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120172202 Active EP2543449B1 (fr) | 2011-07-07 | 2012-06-15 | Procédé destiné à la fabrication dýune bande de magnésium |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2543449B1 (fr) |
DE (1) | DE102011078829A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103331310A (zh) * | 2013-07-13 | 2013-10-02 | 吉林大学 | 镁合金板材轧制参数监测与故障诊断系统及方法 |
CN105149355A (zh) * | 2015-09-30 | 2015-12-16 | 中镁镁业有限公司 | 宽幅镁合金板状带材的异步温轧装置 |
CN114011876A (zh) * | 2021-10-25 | 2022-02-08 | 鞍钢重型机械有限责任公司 | 可实现带头带尾重复使用的镁合金卷材生产工艺 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116475225B (zh) * | 2023-04-07 | 2023-11-10 | 江苏贯森新材料科技有限公司 | 一种钢带冷轧机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0576890A1 (fr) * | 1992-06-30 | 1994-01-05 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Dispositif pour enrouler et dérouler des brames minces |
JPH0871609A (ja) * | 1994-09-07 | 1996-03-19 | Kawasaki Steel Corp | オーステナイト系ステンレス鋼帯のサイドトリミング方法とその装置 |
WO2002011915A1 (fr) * | 2000-08-05 | 2002-02-14 | Sms Demag Aktiengesellschaft | Procede et installation de fabrication de produits plats minces |
WO2011065248A1 (fr) * | 2009-11-24 | 2011-06-03 | 住友電気工業株式会社 | Procédé de production d'une tôle en alliage de magnésium et matériau en bobines d'alliage de magnésium |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2888763B1 (fr) * | 2005-07-22 | 2008-10-03 | Vai Clecim Sa | Procede d'inspection et installation associee |
-
2011
- 2011-07-07 DE DE102011078829A patent/DE102011078829A1/de not_active Withdrawn
-
2012
- 2012-06-15 EP EP20120172202 patent/EP2543449B1/fr active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0576890A1 (fr) * | 1992-06-30 | 1994-01-05 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Dispositif pour enrouler et dérouler des brames minces |
JPH0871609A (ja) * | 1994-09-07 | 1996-03-19 | Kawasaki Steel Corp | オーステナイト系ステンレス鋼帯のサイドトリミング方法とその装置 |
WO2002011915A1 (fr) * | 2000-08-05 | 2002-02-14 | Sms Demag Aktiengesellschaft | Procede et installation de fabrication de produits plats minces |
WO2011065248A1 (fr) * | 2009-11-24 | 2011-06-03 | 住友電気工業株式会社 | Procédé de production d'une tôle en alliage de magnésium et matériau en bobines d'alliage de magnésium |
EP2505274A1 (fr) * | 2009-11-24 | 2012-10-03 | Sumitomo Electric Industries, Ltd. | Procédé de production d'une tôle en alliage de magnésium et matériau en bobines d'alliage de magnésium |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103331310A (zh) * | 2013-07-13 | 2013-10-02 | 吉林大学 | 镁合金板材轧制参数监测与故障诊断系统及方法 |
CN105149355A (zh) * | 2015-09-30 | 2015-12-16 | 中镁镁业有限公司 | 宽幅镁合金板状带材的异步温轧装置 |
CN105149355B (zh) * | 2015-09-30 | 2017-09-01 | 中镁镁业有限公司 | 宽幅镁合金板状带材的异步温轧装置 |
CN114011876A (zh) * | 2021-10-25 | 2022-02-08 | 鞍钢重型机械有限责任公司 | 可实现带头带尾重复使用的镁合金卷材生产工艺 |
Also Published As
Publication number | Publication date |
---|---|
DE102011078829A1 (de) | 2013-01-10 |
EP2543449B1 (fr) | 2014-01-15 |
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