EP3538291A1 - Verfahren und vorrichtung zum streckbiegerichten eines metallbandes - Google Patents
Verfahren und vorrichtung zum streckbiegerichten eines metallbandesInfo
- Publication number
- EP3538291A1 EP3538291A1 EP17772412.7A EP17772412A EP3538291A1 EP 3538291 A1 EP3538291 A1 EP 3538291A1 EP 17772412 A EP17772412 A EP 17772412A EP 3538291 A1 EP3538291 A1 EP 3538291A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rollers
- stretch
- coating
- stretch rollers
- metal strip
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 35
- 239000002184 metal Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000000576 coating method Methods 0.000 claims abstract description 43
- 239000011248 coating agent Substances 0.000 claims abstract description 40
- 239000004033 plastic Substances 0.000 claims abstract description 18
- 229920003023 plastic Polymers 0.000 claims abstract description 18
- 238000005452 bending Methods 0.000 claims description 28
- 239000004814 polyurethane Substances 0.000 claims description 14
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 5
- 229910052755 nonmetal Inorganic materials 0.000 abstract 1
- 239000006223 plastic coating Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 239000011527 polyurethane coating Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 206010016275 Fear Diseases 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- -1 z. For example Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/05—Stretching combined with rolling
Definitions
- the invention relates to a method for stretch bend straightening a metal strip, wherein the metal strip under a tensile stress alternately to draw rollers (a stretching bender) bent while the degree of stretching is generated or increased, wherein one or more stretch rollers, the z. B. are made of metal, provided with a (peripheral) non-metallic coating and consequently sheathing.
- the band usually passes through a Einlaufspannrollensatz for Wergeante and a Auslaufspannrollensatz for Switzerland, wherein the band between the Einlaufspannrollenensatz and the Auslaufspannrollensatz mutually bent around the stretch rollers and thereby generates the degree of stretching or increased.
- Unplanarity means z. Band waviness and / or banding due to length differences of the ribbon fibers in the ribbon plane.
- unplanations of band curvatures in the longitudinal and / or transverse direction are to be distinguished, which are caused by bending moments in the band, z. B. when the band was elastically-plastically bent around pulleys and by elastic-plastic deformation during winding of the tape.
- Longitudinal curvatures are also referred to as coil set, transverse curvatures as cross-bow.
- the unplane band is bent around rollers of sufficiently small diameter (mutual) with a tensile stress which is below the elastic limit RE or its technical elastic limit Rpo, oi of the band material. so that by the superposition of the
- the strip is elongated plastically, the height of the plastic elongation being called the degree of stretching.
- the originally short ribbon fibers are elongated relatively more strongly.
- all of the ribbon fibers have the same length, so basically an ideally directional ribbon free of undulations or bandsaw should result.
- Such a method for stretch-bending is generally carried out with a stretch-bending device which has at least one stretch-bending stand.
- a stretch bender often has three or five stretch rollers in practice.
- Stretching rollers in the context of the invention preferably means individually stretched rollers (supported on supporting rollers), optionally one or more stretching rollers being individually adjustable.
- a stretch bending stand with its stretch rollers to distinguish from a well-known multi-roll unit, which usually has a fixed and an engageable cassette, each with a plurality of straightening rollers and support rollers.
- the straightening rollers are frictionally coupled to each other within such a multi-roll unit usually in the respective cassette by the support rollers, that is, all straightening rollers (a cassette) run at the same speed.
- the elimination of residual curvatures generally takes place in such a multi-roll stand unit, with the strip in the multi-roll stand unit generally not being under tension or only under a slight strip tension. A "global" degree of stretching is not generated.
- degree of stretching is therefore according to the invention to distinguish the stretch bending.
- the stretch rollers or with the stretch bender a degree of stretch of at least 0.2% is usually generated.
- the band is usually under a tensile stress of at least 15%, preferably at least 20% of the yield strength of the metal strip.
- metal strips are processed in practice, which are provided with a surface oxide layer, for. As aluminum strips, wherein this oxide layer bursts at the strong bend around the stretch rollers in the stretch bending, so that can dissolve oxide particles from the strip surface.
- the stretch rollers in the stretch bends are in practice usually with a metallic surface, eg. B. made of hardened steel. The dirt or oxide particles can adhere to these roller surfaces and build up more and more on them. This leads to vibrations, which in turn lead to unwanted chatter marks on the tape.
- Spray media such as kerosene-based media are used.
- the disadvantage here is the solvent evaporation, so that an extraction and, where appropriate, an exhaust air purification must be provided.
- solvents are flammable, so that fire protection devices are provided.
- the invention has for its object to provide a method and apparatus for stretch bending of a metal strip of the type described above, which allows a structurally simple process management in dry operation.
- the invention teaches in a generic method and a device for stretch bending of a metal strip that the stretch rollers are provided with a coating of plastic.
- Plastic means in the context of the invention a polymer material
- polystyrene resin in particular synthetic polymer material, including rubber. It is preferably a coating of polyurethane or a similar plastic. Alternatively, z. As well as a coating of polyamide are used.
- Plastic coatings are already known in practice in connection with tension rollers and pulleys to z. B. to optimize the friction and thus the transmission factors or to protect the belt surfaces.
- stretch rollers in the stretch bending in which the band is under a tensile stress of usually at least 15%, preferably at least 20% of the yield strength of the metal strip and in which with the stretch rollers a degree of stretching of at least 0.2% is generated, the use of such Plastic coatings, z.
- PU coatings have not previously been considered.
- straightening during straightening, z As for aluminum belts, instead of the usual stretch rollers made of steel actually stretch rollers with z. B. a PU coating can be used.
- such stretch rollers preferably consist of a roll core made of metal, for. As steel, and a coating of plastic, z. As polyurethane. With such a coating, the stretch bending process can be run dry. Surprisingly, it has been found that the stretch rollers initially pollute, but the degree of soiling stabilizes at a level that allows dry operation without damaging the belt surface. This dispenses with the spray systems used in practice, so that the associated disadvantages are avoided. In contrast to the ceramic coatings proposed in the prior art, plastic coatings, in particular polyurethane coatings, can be realized simply and inexpensively, and it has surprisingly been found that the angles of wrap around the stretch rollers are set so low as a function of the strip tension
- JP63-199023 A and JP63-199024 A describe the use of a plastic coating in a multi-roll straightening unit.
- the metal strip In such a "roll leveler", the metal strip is usually under no or only very little strip tension and no appreciable degree of stretching is produced, so that only very low loads of the rolls and the coatings occur.
- the focus is on the protection of the metal strip by the plastic coating, so that damage to the tape should be avoided.
- the invention is based on a different idea.
- a coating of a hardness of at least 90 Shore A is used.
- the coating may have a thickness of at least 1 mm, preferably at least 3 mm. So is the
- the stretch rollers preferably have a diameter of 25 mm to 100 mm, z. B. 35 mm to 70 mm.
- the diameter refers to the core, that is the specification without the plastic coating.
- the stretch rollers are each supported individually in the stretch bending straightening or in a stretch bending straightening stand, that is, they can each be supported individually on at least two support rollers and possibly a plurality of intermediate rollers.
- the individual stretch rollers eg below the belt or above the belt
- the individual stretch rollers are not frictionally connected to one another via the support rollers but are supported individually, so that they can rotate at different speeds.
- one or more draw rolls are individually adjustable.
- the wrap angles at the individual stretch rollers are individually and independently adjustable.
- the coating of the stretch rollers with the plastic coating is the coating of the stretch rollers with the plastic coating.
- the support rollers and / or the intermediate rollers with a coating of plastic, for. B. be provided a polyurethane coating.
- Aluminum strips or strips of aluminum alloys are preferably used as metal strips. But the invention also includes the
- Processing metal bands of other materials eg. As steel bands or stainless steel bands.
- the invention is not only the method described, but also a device for stretch bending of metal strips. With this device can preferably operate the method described.
- the device preferably has an infeed tensioning roller set for building up the strip tension and an outfeed tensioning roller set for dismantling the strip tension.
- several stretch rollers are provided, which are preferably supported individually, around which the band is bent alternately increasing the degree of stretching.
- One, several or all of these stretch rollers are provided with a circumferential non-metallic coating and consequently sheathing.
- this coating consists of plastic, for. B. polyurethane.
- FIG. 2a and 2b an enlarged section of the object according to
- Fig. 1 in various embodiments of the invention
- 3a, 3b and 3c show further embodiments of the invention.
- a device for stretch bending of a metal strip B is shown.
- the metal strip B it may be z. B. act an aluminum strip.
- the invention also includes the stretch bending of steel strips or strips of other metals or alloys.
- the device has in its basic structure a Einlaufspannrollensatz E for building the tape tension and a Auslaufspannrollensatz A for reducing the tape tension. Between the Einlaufspannrollensatz E and the Auslaufspannrollensatz A several draw rollers 1, 2, 3, 4, 5 are provided, around which the tape is bent alternately increasing the degree of stretching. Incidentally, it can be seen that the first stretch roller 1 is preceded by a deflection roller U. The last stretch roller can be arranged downstream of a further deflection roller. Each of these stretch rollers 1 to 5 is supported individually, namely on at least two support rollers 6, which are not shown in Fig. 1. These may be continuous support rollers or rows of segmented support rollers. In any case, the stretch rollers 1-5 are individually supported, that is they are (in contrast to a Learnrollenrichtmaschine) not frictionally connected to each other via the support rollers 6.
- the stretch rollers 1-5 With the stretch rollers 1-5 a degree of stretching of at least 0.2% is generated.
- the tensile stress in the metal strip B is generated during the stretch-bending.
- the tensile stress is at least 15%, preferably at least 20% of the yield strength of the metal strip.
- all stretch rollers 1 to 5 are provided with a non-metallic coating 8.
- the individual stretch rollers 1 to 5 are provided with a non-metallic coating 8.
- the coating is a coating 8 made of plastic, preferably of polyurethane or a comparable plastic.
- This coating 8 may have a thickness of z. B. 1 mm to 10 mm, preferably 3 mm to 7 mm.
- the stretch rollers 1 to 5 have a diameter of 25 mm to 100 mm, z. B. 35 mm to 70 mm, which means the diameter of the stretch rollers without the coating and consequently the diameter of the roll core 7 is meant.
- 2a and 2b show embodiments in which only the stretch rollers 1-5 are provided with the plastic coating 8 according to the invention, while the support rollers 6 and the optionally provided intermediate rollers 6 'are not provided with a coating.
- Fig. 2a shows an embodiment with two support rollers 6 and Fig. 2b shows an embodiment in which additional intermediate rollers 6 'are provided.
- FIGS. 3a, 3b and 3c show embodiments in which, in addition to the draw rolls 1-5, additional rolls are also provided with a coating.
- FIG. 3 a shows an embodiment in which the coated draw roll 1 - 5 is supported on two coated support rollers 6.
- the coatings 8 'of the support rollers 6 may also be made of polyurethane or other plastic.
- Fig. 3b shows an embodiment in which the stretch rollers 1-5 are supported by two intermediate rollers 6 'and three support rollers 6 and three rows of segmented support rollers.
- the stretch rollers 1-5 are supported by two intermediate rollers 6 'and three support rollers 6 and three rows of segmented support rollers.
- the stretch rollers 1-5 are supported by two intermediate rollers 6 'and three support rollers 6 and three rows of segmented support rollers.
- the stretch rollers 1-5 are supported by two intermediate rollers 6 'and three support rollers 6 and three rows of segmented support rollers.
- the stretch rollers 1-5 are supported by two intermediate rollers 6 'and three support rollers 6 and three rows of segmented support rollers.
- the support rollers 6 are provided with a coating 8 or 8 ', while the intermediate rollers 6' are uncoated.
- Fig. 3c shows a modification of the embodiment of Fig. 3b, in which case the intermediate rollers 6 'are provided with a coating 8 ".
- metal strips B can be oriented in the dry mode, that is to say that the drawing rollers 1-5 are not sprayed with a spraying medium.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016121448.5A DE102016121448B4 (de) | 2016-11-09 | 2016-11-09 | Verfahren und Vorrichtung zum Streckbiegerichten eines Metallbandes |
PCT/EP2017/074210 WO2018086794A1 (de) | 2016-11-09 | 2017-09-25 | Verfahren und vorrichtung zum streckbiegerichten eines metallbandes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3538291A1 true EP3538291A1 (de) | 2019-09-18 |
EP3538291B1 EP3538291B1 (de) | 2022-11-16 |
Family
ID=59966760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17772412.7A Active EP3538291B1 (de) | 2016-11-09 | 2017-09-25 | Verfahren und vorrichtung zum streckbiegerichten eines metallbandes |
Country Status (7)
Country | Link |
---|---|
US (1) | US20210346930A1 (de) |
EP (1) | EP3538291B1 (de) |
CN (1) | CN109952164A (de) |
CA (1) | CA3040160C (de) |
DE (1) | DE102016121448B4 (de) |
RU (1) | RU2751912C2 (de) |
WO (1) | WO2018086794A1 (de) |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3641797A (en) * | 1970-02-05 | 1972-02-15 | American Metal Climax Inc | Stretcher leveling system |
SU517353A1 (ru) | 1975-01-03 | 1976-06-15 | Славянский Филиал Всесоюзного Ордена Ленина Научно-Исследовательского И Проектно-Конструкторского Института Металлургического Машиностроения | Листоправильна машина |
SU965544A1 (ru) * | 1981-04-03 | 1982-10-15 | Уральский научно-исследовательский институт трубной промышленности | Ролик правильной машины |
FR2608946A1 (fr) | 1986-12-31 | 1988-07-01 | Clecim Sa | Cylindres actifs de cage de planage |
JPS63199024A (ja) | 1987-02-12 | 1988-08-17 | Fuji Photo Film Co Ltd | ロ−ラレベラ |
JPS63199023A (ja) | 1987-02-12 | 1988-08-17 | Fuji Photo Film Co Ltd | ロ−ラレベラ |
DE3828159A1 (de) * | 1988-08-19 | 1990-02-22 | Bwg Bergwerk Walzwerk | Bandrolle, insbesondere biegerolle, richtrolle, stuetzrolle oder dergleichen |
DE3912676A1 (de) * | 1989-04-18 | 1990-10-25 | Bwg Bergwerk Walzwerk | Verfahren und vorrichtung zum kontinuierlichen zugrecken von duennen baendern, insbesondere von metallischen baendern |
JPH0428418A (ja) * | 1990-05-24 | 1992-01-31 | Kawasaki Steel Corp | テンションレベラにおけるストリップのスケール排除方法 |
DE4024794C2 (de) | 1990-08-04 | 1993-11-25 | Sundwiger Eisen Maschinen | Verfahren zum Richten von Metallbändern |
DE4200922A1 (de) | 1992-01-16 | 1993-07-22 | Schloemann Siemag Ag | Verfahren und vorrichtung zum richten von blech |
FR2715592B1 (fr) | 1994-02-01 | 1996-04-12 | Clecim Sa | Procédé et installation de planage d'une bande métallique mince. |
DE19509067A1 (de) | 1995-03-14 | 1996-09-19 | Bwg Bergwerk Walzwerk | Verfahren zum kontinuierlichen Richten von dünnen Metallbändern, insbesondere von Aluminium- und Edelstahl-Bändern mit Banddicken von 0,1 mm bis 0,5 mm, und Richtanlage zur Durchführung des Verfahrens |
JP3590288B2 (ja) | 1999-02-15 | 2004-11-17 | 住友重機械工業株式会社 | 帯板のレベリング方法およびレベリング装置 |
DE102004043150A1 (de) | 2004-09-03 | 2006-03-09 | Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH | Spannrolle für eine Bandbehandlungsanlage sowie Bandbehandlungsanlage und Verwendung der Spannrolle |
JP2007098463A (ja) * | 2005-10-07 | 2007-04-19 | Jfe Steel Kk | 金属帯用形状矯正装置および金属帯用通板速度制御装置 |
DE102008024013B3 (de) | 2008-05-16 | 2009-08-20 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Verfahren und Vorrichtung zum Richten eines Metallbandes |
DE102009041852A1 (de) * | 2009-09-18 | 2011-04-07 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Verfahren und Vorrichtung zum kontinuierlichen Streckbiegerichten von Metallbändern |
DE102010024714C5 (de) * | 2010-06-23 | 2018-10-18 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Verfahren zum Streckbiegerichten von Metallbändern und Streckbiegerichtanlage |
CN202174132U (zh) * | 2011-07-01 | 2012-03-28 | 云南钛业股份有限公司 | 钛带拉伸弯曲矫直机 |
DE102013106243C5 (de) | 2013-06-14 | 2018-10-04 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Verfahren und Vorrichtung zum Streckbiegerichten von Metallbändern |
CN203409059U (zh) * | 2013-07-05 | 2014-01-29 | 苏州有色金属研究院有限公司 | 金属带材纯拉伸矫直用可变凸度张力辊系统 |
-
2016
- 2016-11-09 DE DE102016121448.5A patent/DE102016121448B4/de not_active Revoked
-
2017
- 2017-09-25 EP EP17772412.7A patent/EP3538291B1/de active Active
- 2017-09-25 RU RU2019117616A patent/RU2751912C2/ru active
- 2017-09-25 WO PCT/EP2017/074210 patent/WO2018086794A1/de unknown
- 2017-09-25 CA CA3040160A patent/CA3040160C/en active Active
- 2017-09-25 US US16/336,519 patent/US20210346930A1/en not_active Abandoned
- 2017-09-25 CN CN201780068892.0A patent/CN109952164A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102016121448A1 (de) | 2018-05-09 |
US20210346930A1 (en) | 2021-11-11 |
DE102016121448B4 (de) | 2018-08-30 |
WO2018086794A1 (de) | 2018-05-17 |
CA3040160C (en) | 2021-07-06 |
CN109952164A (zh) | 2019-06-28 |
RU2751912C2 (ru) | 2021-07-20 |
RU2019117616A (ru) | 2020-12-10 |
EP3538291B1 (de) | 2022-11-16 |
RU2019117616A3 (de) | 2020-12-10 |
CA3040160A1 (en) | 2018-05-17 |
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