EP0988405A1 - Method and installation for producing hot rolled aluminium tape intended for can making - Google Patents
Method and installation for producing hot rolled aluminium tape intended for can makingInfo
- Publication number
- EP0988405A1 EP0988405A1 EP98932008A EP98932008A EP0988405A1 EP 0988405 A1 EP0988405 A1 EP 0988405A1 EP 98932008 A EP98932008 A EP 98932008A EP 98932008 A EP98932008 A EP 98932008A EP 0988405 A1 EP0988405 A1 EP 0988405A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- strip
- hot
- reversing
- collar
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 title abstract description 8
- 239000004411 aluminium Substances 0.000 title abstract 2
- 238000009434 installation Methods 0.000 title abstract 2
- 238000005096 rolling process Methods 0.000 claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000001953 recrystallisation Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005098 hot rolling Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000001960 triggered effect Effects 0.000 abstract 1
- 230000032258 transport Effects 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 4
- 238000005097 cold rolling Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- 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
-
- 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
- B21B2003/001—Aluminium or its alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Definitions
- Process and plant for the production of hot-rolled AI can strip
- the invention relates to a method and a plant for carrying out the method for producing hot-rolled Al-can strip, especially in rolling mills, whose annual production capacity is below 250,000 tons, with a reversing roughing of the raw material used hot and immediately subsequent finishing rolling of the strip, which is a heat treatment of the coiled reel follows.
- Pre-rolled reversing stand and then finish-rolled on a multi-stand mill Pre-rolled reversing stand and then finish-rolled on a multi-stand mill.
- Four-high mill stands are usually used in the finishing train, whereby care must be taken to ensure that constant temperature conditions are maintained within the mill so that the strip that is coiled up into a bundle is given the desired optimal rolling structure.
- a reel temperature of approx. 320 ° C should be aimed for.
- the finished rolled Al strip is given the structure with cube texture which is known in specialist circles and which is particularly well suited for deep-drawing aluminum cans due to its low tip formation.
- the other practiced method for the production of aluminum can strip provides a reversing rolling mill with reels arranged on both sides for the final rolling of the strip.
- the method has the disadvantage that there is an uneven temperature distribution over the length when the tape is wound up and unwound of the strip and therefore the desired even structure in the rolled out bundle cannot be achieved.
- an intermediate annealing is carried out in the subsequent cold rolling process, which improves the deep-drawing ability of the aluminum can strip somewhat, but does not form the cube texture in the strip material that is favorable for the deformation process.
- the aim of the present invention is to provide a practicable and economical solution for producing high-quality canned strip on hot rolling mills with an annual capacity of less than 250,000 tons, in which the cube texture which is favorable for forming the Al strip is formed.
- the last, preferably three, hot rolling passes of the finishing train on a reversing roll stand from bundle to bundle are not recrystallized in the uncritical temperature range from 260 ° C. to 280 ° C. and each coiled finished bundle is fed to a bundle piercing furnace immediately afterwards and using the rolling heat in which the finished bundles on
- Recrystallization temperature (315 320 ° C) are heated.
- the last three hot rolling passes are carried out from bundle to bundle on a finishing mill especially for a minimill concept.
- a finishing mill consists of a single reversing roll stand with reels arranged on both sides, so that initially the high investments for the four-high finishing stands of a multi-stand mill are eliminated. Since the temperature control and the rolling and pause times are critical, especially in the case of minimill concepts, the invention provides for the strip to be rolled in the uncritical range from 260 ° C. to 280 ° C. and only then and using the rolling heat in a subsequent furnace to the recrystallization temperature to warm up.
- Such an oven then only has to apply the temperature difference of approx. 40 ° -60 C between the rolling temperature and the recrystallization temperature and thus achieves a favorable energy balance.
- An annealing during or before cold rolling can be omitted by the method according to the invention.
- the microstructure (the cube texture) corresponds to the product produced on multi-stand hot strip finishing mills without the high investments required there.
- a system for carrying out the method according to the invention is characterized in that the finish rolling is carried out on a four-high reversing stand with winding devices arranged on both sides, that one of the winding devices corresponds to a coil transport device for the finished coil, which is connected to a coil piercing furnace, into which the coil is fed Heat treatment can be introduced.
- the system thus essentially consists of two reversing stands, one of which, as a roughing stand, pre-rolls the block heated to the rolling temperature in a conventional manner, and that second reversing stand is provided with reel devices arranged on both sides, in which the strip is wound up and unwound into bundles in several reversing stitches.
- the finished coil is transferred to the coil transport device with a coil transfer device, with which the finished coil is transported to an adjacent coil piercing furnace.
- the introduction of the bundle piercing furnace is carried out to heat the bundle to the recrystallization temperature outside the rolling mill so that the desired structure is obtained.
- the collision piercing furnace is preferably equipped with a pallet transport system in which a plurality of pallets which are arranged on the end face and receive the bundles can be transported through the furnace by moving these pallets.
- pallet transport systems are known per se; by the cyclical shifting of the first pallet by means of a shifting device, for example a hydraulic cylinder, the row of pallets behind it is also shifted, so that with each pallet inserted into the furnace and covered with a collar, a pallet with a finished heat-treated collar on the discharge side of the Collision piercing furnace is ejected. After cooling, the coil is fed to the cold rolling mill without the need for further heat treatment.
- a roughly schematic representation of a plant according to the invention is shown in the single drawing figure. It consists of the four-high reversing stand 1, the four-high reversing finishing stand 2 following in the rolling direction and the coil piercing furnace 3.
- the raw material used in the form of a heated aluminum block at 4 is, as indicated at 5, rolled out in several reversing stitches in the four-high stand 1 of the roughing train to a preliminary strip 6 and immediately thereafter inserted into the finishing train consisting of the four-high reversing stand 2.
- the preliminary strip 6 is rolled out into a finished strip in several reversing stitches 7, the strip being wound up on both sides of the four-high reversing stand 2 after each rolling pass, as indicated at 8 and 9.
- At least three hot rolling passes are preferably provided according to this procedure.
- the coil B wound at 9 is transferred from a transfer device, not shown, to a coil transport device, indicated at 10, which transports the coil B to the coil piercing furnace 3.
- a coil transport device indicated at 10
- the collar B is placed on a pallet 11, of which a large number of similar pallets 11 can be moved through the collar piercing furnace 3.
- the pallet 1 with the collar B is pushed into the furnace with the furnace door 3a open, and at the same time a pallet 13 with a heat-treated collar B is ejected through the likewise opened furnace door 3b at the front end of the collar piercing furnace 3.
- inside the furnace there are end-to-end pallets 11 with an equal number of bundles B which, when passing through the bundle piercing furnace 3, reach a temperature above the recrystallization temperature of the aluminum strip, i.e. 315-320 ° C.
- the reversing rolling passes 7 were carried out in the four-high reversing finishing stand 2 at a temperature below the recrystallization temperature of approx. 260-280 ° C.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19721866A DE19721866B4 (en) | 1997-05-16 | 1997-05-16 | Process for the production of hot-rolled Al-tape and apparatus for carrying out the method |
DE19721866 | 1997-05-16 | ||
PCT/DE1998/001162 WO1998053111A1 (en) | 1997-05-16 | 1998-04-22 | Method and installation for producing hot rolled aluminium tape intended for can making |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0988405A1 true EP0988405A1 (en) | 2000-03-29 |
Family
ID=7830457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98932008A Ceased EP0988405A1 (en) | 1997-05-16 | 1998-04-22 | Method and installation for producing hot rolled aluminium tape intended for can making |
Country Status (7)
Country | Link |
---|---|
US (2) | US20020062889A1 (en) |
EP (1) | EP0988405A1 (en) |
JP (1) | JP2001525731A (en) |
AU (1) | AU8207798A (en) |
CA (1) | CA2289663A1 (en) |
DE (1) | DE19721866B4 (en) |
WO (1) | WO1998053111A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10349950A1 (en) * | 2003-10-24 | 2005-05-25 | Sms Demag Ag | Rolling mill for warm rolling of metals, including a hot strip roll chain, and blooming and finishing roll chains useful in rolling Al |
DE102004034090A1 (en) | 2004-07-15 | 2006-02-02 | Sms Demag Ag | Rolling plant for rolling metallic material |
DE102007016100A1 (en) * | 2006-09-01 | 2008-03-06 | Sms Demag Ag | Device for keeping hot slabs emerging from a continuous casting plant |
EP3875629A1 (en) | 2020-03-03 | 2021-09-08 | Elvalhalcor Hellenic Copper and Aluminium Industry S.A. | Method and installation for producing aluminum can sheet |
CN112077149B (en) * | 2020-08-05 | 2022-08-19 | 首钢京唐钢铁联合有限责任公司 | Control system for hot rolling heating furnace tapping rhythm |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE905204C (en) * | 1942-12-03 | 1954-03-01 | Ver Leichtmetallwerke Gmbh | Process for rolling sheet metal from alloys of the Al-Cu-Mg type |
US4282044A (en) * | 1978-08-04 | 1981-08-04 | Coors Container Company | Method of recycling aluminum scrap into sheet material for aluminum containers |
DE3104079A1 (en) * | 1981-02-06 | 1982-08-19 | Vereinigte Deutsche Metallwerke Ag, 6000 Frankfurt | Process for preparing rolled strips from an aluminium alloy for manufacturing two-part cans |
JPS57149459A (en) * | 1981-03-09 | 1982-09-16 | Sumitomo Light Metal Ind Ltd | Production of aluminum alloy sheet to be worked |
US4929285A (en) * | 1989-05-04 | 1990-05-29 | Aluminum Company Of America | Aluminum sheet product having reduced earing and method of making |
EP0547112A4 (en) * | 1990-09-05 | 1993-09-08 | Golden Aluminum Company | Process of fabrication of aluminum sheet |
US5140837A (en) * | 1991-05-28 | 1992-08-25 | Tippins Incorporated | Process for rolling soft metals |
US5356495A (en) * | 1992-06-23 | 1994-10-18 | Kaiser Aluminum & Chemical Corporation | Method of manufacturing can body sheet using two sequences of continuous, in-line operations |
US5362341A (en) * | 1993-01-13 | 1994-11-08 | Aluminum Company Of America | Method of producing aluminum can sheet having high strength and low earing characteristics |
US5362340A (en) * | 1993-03-26 | 1994-11-08 | Aluminum Company Of America | Method of producing aluminum can sheet having low earing characteristics |
US5499523A (en) * | 1993-10-19 | 1996-03-19 | Danieli United, Inc. | Method for producing metal strips having different thicknesses from a single slab |
-
1997
- 1997-05-16 DE DE19721866A patent/DE19721866B4/en not_active Expired - Fee Related
-
1998
- 1998-04-22 CA CA002289663A patent/CA2289663A1/en not_active Abandoned
- 1998-04-22 JP JP54977898A patent/JP2001525731A/en not_active Ceased
- 1998-04-22 AU AU82077/98A patent/AU8207798A/en not_active Abandoned
- 1998-04-22 US US09/423,911 patent/US20020062889A1/en not_active Abandoned
- 1998-04-22 WO PCT/DE1998/001162 patent/WO1998053111A1/en not_active Application Discontinuation
- 1998-04-22 EP EP98932008A patent/EP0988405A1/en not_active Ceased
-
2006
- 2006-11-21 US US11/602,824 patent/US20070062621A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9853111A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1998053111A1 (en) | 1998-11-26 |
DE19721866B4 (en) | 2006-03-16 |
US20070062621A1 (en) | 2007-03-22 |
US20020062889A1 (en) | 2002-05-30 |
CA2289663A1 (en) | 1998-11-26 |
DE19721866A1 (en) | 1998-11-19 |
AU8207798A (en) | 1998-12-11 |
JP2001525731A (en) | 2001-12-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19991104 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT DE IT NL |
|
17Q | First examination report despatched |
Effective date: 20001018 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VAW ALUMINIUM AG Owner name: SMS DEMAG AG |
|
APBT | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9E |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20020523 |
|
APAF | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNE |