EP1269131A2 - Vermeidung von selbsterregten ratterschwingungen in walzanlagen - Google Patents
Vermeidung von selbsterregten ratterschwingungen in walzanlagenInfo
- Publication number
- EP1269131A2 EP1269131A2 EP00941881A EP00941881A EP1269131A2 EP 1269131 A2 EP1269131 A2 EP 1269131A2 EP 00941881 A EP00941881 A EP 00941881A EP 00941881 A EP00941881 A EP 00941881A EP 1269131 A2 EP1269131 A2 EP 1269131A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- stabilization
- resistance
- vibration
- coupled
- 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 69
- 230000010355 oscillation Effects 0.000 title description 6
- 230000002265 prevention Effects 0.000 title 1
- 230000006641 stabilisation Effects 0.000 claims description 13
- 238000011105 stabilization Methods 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract 1
- 230000005284 excitation Effects 0.000 description 8
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000418 atomic force spectrum Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/007—Control for preventing or reducing vibration, chatter or chatter marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
- B21B2203/04—Brakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
- B21B2203/44—Vibration dampers
Definitions
- the object of the invention is to exclude the rat marks that occur, for example, when cold-rolling sheet steel.
- pe ⁇ odic vibrations occur beyond the basic vibrations and grow exponentially.
- the rolling stock suffers from quality degradation, leads to rejects and also damage to the Rolling mill Even in the case of weak rat stabilization, so-called thickness and shape waves occur.
- the same chattering phenomena occur in addition to steel in the other rolling stock, also when rolling paper, as well as when rolling strip and wire
- the object of the invention is. switch off the self-excitation of vibrations in rolling mills a priori
- This task is solved by installing resistance transducers in the rolling mill.
- the installation location is determined by the position of the vibration mode that tends to feed back resonance vibrations.
- Technical designs of resistance transducers are the vibration absorbers, e.g. described in VDI directive 2737, sheet 1 (1980) and the resonance eliminators Vibration absorbers have a spectrally adjustable resistance curve. Resistance transmitters that are effective in several degrees of translation and rotation are advantageous. Vibration absorbers in a layered construction are suitable.
- Fig. 6 and 7 co-rotating resistance body for vibration stabilization
- the vertical forces and deflections occurring on the work roll are Fj and in the horizontal direction F 2 and ⁇ 2 and the moments and angles of rotation are T and ⁇ 5
- the forces and deflections (speed of deflection) on the incoming material are F 4 and ⁇ 4 (x) and on the outgoing material F- * and xt (x * -
- the moments and angles of rotation T 6 , ⁇ 6 and T 7 , ⁇ 7 also occur on the rolling stock in the immediate vicinity of the rolling location.
- the rolling system 10 can be reduced to the individual modes n in terms of vibration technology , consisting of the modal mass M n , the modal damping D n and the modal spring C n According to FIG. 2, each mode n forms a closed, single-path oscillator.
- Fig. 3 shows a rolling stand 30 consisting of work rolls 31 (and 31 '), support roll 32 and the rolling stock 33 To self-excited vibrations in vertical xi. -
- a resistance roller 34 is coupled to the support roller 32 and rotates due to the pressure with which its axis of rotation is parallel to the other axes and lies in the central plane.
- the resistance roller 34 consists of a plastic with a high internal Damping, for example made of polyurethane and has a spectral resistance in the xi direction, at the critical chatter frequency this is R.
- the integration provides an i-vibration with the angular frequency ⁇ > ⁇ o and the exponential factor exp (- ⁇ cüiot) (the static deformation due to the constant rolling load F (ho) is omitted here)
- FIGS. 4 to 9 show different embodiments for damping with a resistance R.
- a rolling stand 40 again consists of work and support rolls 41 and 42 and the Rolling stock 43 The resistance is applied here, comparable to FIG. 3, by two resistance rollers 44 acting on the work roller 41.
- the resistance roller 44 is also designed for torsional vibrations and has the rotational resistance R ⁇
- R ⁇ the rotational resistance
- C-, dTs / dcp acts as the torsion spring for the specified operating condition, characterized by the index () o by the rolling speed v 0 , rolling force F (h), taper ho and working moment T-, 0 If, as in the example in FIG.
- the multi-dimensional resistance effect according to FIG. 4 can also switch off the self-excitation of two coupled modes n and m (the classic example of a mutual excitation of two modes is the fluttering of aircraft wings).
- the vibration equation for such a mode coupling is
- the left side of the equation describes the single-resonance resonance oscillator of the n and m modes.
- the excitation elements E mn dF m / dX n on the right side are decisive for the vibration coupling and stability. In the general case, chatter marks with combined thickness and shape waves are to be expected for self-excitation
- the resistance roller 54 acting on a roller 51 does not consist of a homogeneous plastic, but of an annular layering of steel and plastic.For the relevant lower frequency range, this layering can be described as a quasi-homogeneous waveguide and again characterized by a resistance R thanks to the higher one Mass, the greater design freedom, resonance allows higher resistance densities to be achieved, so that a continuous cylindrical roller is not necessary and individual roller disks are sufficient.
- the contact In order to ensure good vibration-dynamic coupling of the resistance rollers 54 to the roller 51, the contact must have a high Hertzian spring constant.
- the outer jacket of the resistance roller 54 is also made of steel - If, however, the resistance roller 54 is designed as a resonator, it may be expedient to dimension the spring constants of the Hertzian contacts, the Hertzian spring rate nte and the roller mass result in a resonator with the required resonance frequency It is advantageous with this solution that the Hertzian spring constant and thus the resonance frequency can be readjusted by the contact pressure
- the resistance sensor 64 is fitted inside the support roller 62.
- a resistance sensor 74 on the edge of the work roller 71, consisting of concentric steel / plastic layers
- FIGS. 8 and 9 show fixed resistance bodies 84 and 94 which act on the rollers 81 and 91.
- the resistance body 84 is coupled by means of a slide bearing shell 86 and can suppress vibrations perpendicular to the bearing.
- the resistance becomes R actively generated
- a sensor 95 senses the oscillation speed x * of the roller 91 and in the resistance transducer 94 - here - a force F proportional x * is electrodynamically transmitted to the roller 91.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Vibration Prevention Devices (AREA)
- Braking Arrangements (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Debarking, Splitting, And Disintegration Of Timber (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19918555A DE19918555C1 (de) | 1999-04-23 | 1999-04-23 | Stabilisierung von Walzanlagen gegenüber selbsterregten Ratterschwingungen |
| DE19918555 | 1999-04-23 | ||
| PCT/DE2000/001240 WO2000065319A2 (de) | 1999-04-23 | 2000-04-20 | Vermeidung von selbsterregten ratterschwingungen in walzanlagen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1269131A2 true EP1269131A2 (de) | 2003-01-02 |
| EP1269131B1 EP1269131B1 (de) | 2004-01-07 |
Family
ID=7905682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00941881A Expired - Lifetime EP1269131B1 (de) | 1999-04-23 | 2000-04-20 | Vermeidung von selbsterregten ratterschwingungen in walzanlagen |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6773383B2 (de) |
| EP (1) | EP1269131B1 (de) |
| JP (1) | JP2002542944A (de) |
| AT (1) | ATE257586T1 (de) |
| AU (1) | AU779828B2 (de) |
| BR (1) | BR0009988A (de) |
| CA (1) | CA2371111A1 (de) |
| DE (2) | DE19918555C1 (de) |
| WO (1) | WO2000065319A2 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1343598B1 (de) * | 2000-12-20 | 2006-05-03 | Novelis, Inc. | Vorrichtung und verfahren zur schwingungskontrolle in einem walzwerk |
| DE10328557B4 (de) * | 2003-06-24 | 2005-04-14 | Walzen Irle Gmbh | Walze |
| US8042807B2 (en) * | 2006-12-21 | 2011-10-25 | Palo Alto Research Center Incorporated | Transport for printing systems |
| DE102007000131A1 (de) * | 2007-03-07 | 2008-09-11 | Hilti Ag | Handwerkzeugmaschine mit pneumatischem Schlagwerk |
| IT1390945B1 (it) * | 2008-08-06 | 2011-10-27 | Futura Spa | Rullo per il trattamento di materiale nastriforme cartaceo |
| AT507087B1 (de) * | 2008-12-05 | 2010-02-15 | Siemens Vai Metals Tech Gmbh | Verfahren und vorrichtung zur semi-aktiven reduktion von druckschwingungen in einem hydrauliksystem |
| IT1402012B1 (it) * | 2010-10-08 | 2013-08-28 | Danieli Off Mecc | Sistema di smorzamento di vibrazioni di un laminatoio |
| US8584552B2 (en) * | 2011-02-23 | 2013-11-19 | Mario H. Gottfried | High speed conical flywheel system |
| CN104942010B (zh) * | 2015-07-03 | 2017-04-05 | 燕山大学 | 一种板带轧机颤振的建模方法 |
| CN107597850B (zh) * | 2017-08-31 | 2019-07-23 | 武汉钢铁有限公司 | 确定冷轧机振源的方法、装置、计算机存储介质及设备 |
| CN112050916B (zh) * | 2020-06-22 | 2021-11-30 | 华东理工大学 | 一种基于称重托辊的振动频率测量物料总质量的方法 |
| CN112453053B (zh) * | 2020-09-28 | 2023-07-11 | 甘肃酒钢集团宏兴钢铁股份有限公司 | 薄规格及极薄规格带钢生产中光整机处带钢起筋消除方法 |
| CN114483870B (zh) * | 2022-01-26 | 2023-10-20 | 太原理工大学 | 一种轧机辊系垂直振动的刚柔耦合吸振装置 |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US620286A (en) * | 1899-02-28 | Rubber roll | ||
| US1790697A (en) * | 1931-02-03 | Antibacklash mechanism for rolling-mill trains | ||
| US3111894A (en) * | 1962-04-17 | 1963-11-26 | West Virginia Pulp & Paper Co | Calender vibration eliminator |
| FR1354656A (fr) * | 1962-05-30 | 1964-03-06 | Karlstad Mekaniska Ab | Calandre à papier |
| GB1026207A (en) * | 1962-10-23 | 1966-04-14 | Shin Mitsubishi Jukogyo Kk | A roller assembly for a calender |
| US3279234A (en) | 1962-12-13 | 1966-10-18 | Superior Electric Co | Plate rolling machine |
| US3503242A (en) * | 1967-04-20 | 1970-03-31 | Natalis H Polakowski | Mill rolling machine |
| DE2412672C3 (de) * | 1974-03-16 | 1980-08-28 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Breitbandiger Schwingungsdämpfer zum Reduzieren von Körperschall |
| DE2449874A1 (de) * | 1974-10-21 | 1976-04-29 | Hufnagl Walter | Rolle zum kaltverformen von walzdraht |
| DE3113268C2 (de) * | 1981-04-02 | 1983-12-22 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Schwingungsabsorber |
| DD204631A1 (de) * | 1982-03-25 | 1983-12-07 | Alban Zoellner | Lagerung |
| JPS6118658A (ja) * | 1984-07-02 | 1986-01-27 | Mitsubishi Heavy Ind Ltd | ストリツプの振動吸収装置 |
| US4842944A (en) | 1984-11-07 | 1989-06-27 | Canon Kabushiki Kaisha | Elastic rotatable member |
| US5081760A (en) | 1989-06-26 | 1992-01-21 | Hitachi, Ltd. | Work roll for metal rolling |
| US5252130A (en) | 1989-09-20 | 1993-10-12 | Hitachi, Ltd. | Apparatus which comes in contact with molten metal and composite member and sliding structure for use in the same |
| DE4103248A1 (de) * | 1991-02-04 | 1992-08-06 | Kugelfischer G Schaefer & Co | Lagerung der arbeitswalze eines dressiergeruestes |
| US5393290A (en) | 1991-05-03 | 1995-02-28 | Sulzer-Escher Wyss Gmbh | Roll with adjustable deflection |
| JP3194260B2 (ja) * | 1993-09-28 | 2001-07-30 | 川崎製鉄株式会社 | 調質圧延機におけるチャターマーク防止装置 |
| JP3575054B2 (ja) * | 1994-04-22 | 2004-10-06 | 東海ゴム工業株式会社 | 導電性ロールの製造方法 |
| JP3307551B2 (ja) * | 1996-07-02 | 2002-07-24 | 株式会社日立製作所 | 圧延機用駆動装置、圧延機及び圧延方法 |
| DE19702325A1 (de) * | 1997-01-23 | 1998-07-30 | Alcan Gmbh | Verfahren zur Herstellung von schwingungsgedämpften Walzen und Walzensatz |
-
1999
- 1999-04-23 DE DE19918555A patent/DE19918555C1/de not_active Expired - Fee Related
-
2000
- 2000-04-20 CA CA002371111A patent/CA2371111A1/en not_active Abandoned
- 2000-04-20 DE DE50004997T patent/DE50004997D1/de not_active Expired - Fee Related
- 2000-04-20 AT AT00941881T patent/ATE257586T1/de not_active IP Right Cessation
- 2000-04-20 AU AU56711/00A patent/AU779828B2/en not_active Ceased
- 2000-04-20 EP EP00941881A patent/EP1269131B1/de not_active Expired - Lifetime
- 2000-04-20 BR BR0009988-0A patent/BR0009988A/pt not_active IP Right Cessation
- 2000-04-20 JP JP2000614011A patent/JP2002542944A/ja active Pending
- 2000-04-20 WO PCT/DE2000/001240 patent/WO2000065319A2/de not_active Ceased
-
2001
- 2001-10-22 US US09/982,806 patent/US6773383B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0065319A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| BR0009988A (pt) | 2002-01-08 |
| DE19918555C1 (de) | 2001-06-07 |
| US6773383B2 (en) | 2004-08-10 |
| CA2371111A1 (en) | 2000-11-02 |
| AU779828B2 (en) | 2005-02-10 |
| ATE257586T1 (de) | 2004-01-15 |
| DE50004997D1 (de) | 2004-02-12 |
| EP1269131B1 (de) | 2004-01-07 |
| WO2000065319A3 (de) | 2001-04-05 |
| JP2002542944A (ja) | 2002-12-17 |
| AU5671100A (en) | 2000-11-10 |
| WO2000065319A2 (de) | 2000-11-02 |
| US20020072457A1 (en) | 2002-06-13 |
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