EP2812133A1 - Entry section of a pickling line, of a continuous continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installation - Google Patents
Entry section of a pickling line, of a continuous continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installationInfo
- Publication number
- EP2812133A1 EP2812133A1 EP13702947.6A EP13702947A EP2812133A1 EP 2812133 A1 EP2812133 A1 EP 2812133A1 EP 13702947 A EP13702947 A EP 13702947A EP 2812133 A1 EP2812133 A1 EP 2812133A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- strip
- pinch roll
- loop
- centering
- 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
- 238000005554 pickling Methods 0.000 title description 8
- 238000009434 installation Methods 0.000 title description 3
- 238000005304 joining Methods 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
- B21C47/247—Joining wire or band ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C49/00—Devices for temporarily accumulating material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
Definitions
- TCM CONTINUOUS TANDEM COLD MILL
- PICKLING LINE COUPLED TO TANDEM COLD MILL PL/TCM
- the present invention relates to the field of continuous processes in the steel industry, leading to productivity and yield improvements as well as cost savings. These continuous processes are, for example, those carried out on pickling lines, possibly linked with cold rolling mills, or carried out on continuous rolling mills. Background art
- a technical problem known in the above-mentioned lines is that the entry section, where two following strips are welded together, is one of the main bottlenecks thereof.
- the time performance of the line entry is therefore critical to achieve the yearly production. This is all the more true when the coils deliver short lengths of strip.
- FIG. 1 A typical layout of such an entry section is represented in FIG. 1.
- the entry time cycle represents the time during which the tail end of a coil and the head end of the next coil are being operated at slower speed than the pickling or rolling process one.
- the entry cycle usually comprises the following steps :
- the intermediate pickling or rolling process section is still running at nominal speed thanks to the storage capacity of the looper.
- the present invention aims at decreasing the time for entry cycle in steel industry continuous lines, thus reducing the production time of the above-mentioned lines.
- a further goal of the invention is to simplify the PL/TCM entry section.
- Still a further goal is to eliminate or reduce the transfer time from the common pinch roll to the welder.
- Still a further goal is to allow a better loop creation and a better centering for heavy strip gages.
- a first object of the present invention relates to a continuous industrial equipment having an entry section comprising two devices for uncoiling and feeding out strip materials to be processed, a cutting device and a transfer table for each strip, and a joining device, so that the transfer tables deliver said strips to the joining device where a coil tail strip and a coil head strip are joined, at least a looping table for strip centering and a welder where said coil tail strip and said coil head strip are butt welded, characterized in that each of the transfer tables is also a looping table, whereby the loops for strip centering can be made directly on said transfer tables and in that it is provided so as the joined strips at the joining device are directly fed to the welder, without further looping (claim 1) .
- the continuous industrial equipment having an entry section is further limited according to one or a suitable combination of the following characteristics (claims 2 to 10) :
- the equipment is provided with means for retracting first and then lifting the upper table ;
- each uncoiling devices comprises a pay-off reel ;
- each cutting device comprises a shear
- the joining device comprises a common pinch roll ;
- said means for retracting first and then lifting the upper table comprise at least one hydraulic or pneumatic cylinder for retracting the upper table and at least one hydraulic or pneumatic cylinder for lifting the upper table, said last cylinders being located near the joining device ;
- the equipment comprises a non-contact detection means for controlling the height of the loop at the lower table and preventing a collision of said loop with the upper table ;
- the non-contact detection means is a light barrier
- the equipment comprises a pivotable strip centering wheel able to be moved to the strip by a hydraulic or pneumatic cylinder.
- a second object of the present invention relates to a method for joining, centering and butt welding two strips, in an entry section of a continuous industrial equipment, comprising all characteristics of claims 1 to 7, characterized at least by the following steps (claim 11) : a running coil N is processed through the lower entry level ;
- the tail end of coil N successively leaves the pay-off reel mandrel, the lower entry level and the common pinch roll, a loop being created at the exit side of the welder for centering the tail end ;
- the top roll of the common pinch roll is retracted to allow the movement of the strip during a centering process ;
- a next coil N+2 is threaded, prepared, and cropped on the lower entry level, the head end thereof being placed in front of the common pinch roll in a waiting position ;
- the tail end of coil N+l leaves the pay-off reel mandrel, the upper entry level and the common pinch roll, a loop being created at the exit side of the welder for centering the tail end ;
- the top transfer table is retracted and lifted upwards by the hydraulic or pneumatic cylinders and/or by the actuated screws ; according to speed differences between the entry level and the common pinch roll, a loop is created at the bottom transfer table ;
- the top roll of the common pinch roll is retracted to allow the movement of the strip during a centering process ;
- the new coil N+2 is further fed to the line via the bottom entry level.
- FIG.l represents a typical layout of an entry section according to prior art, as far as hot rolled material is concerned.
- FIG.2 represents a detailed view of the layout of FIG.1.
- FIG.3 represents a preferred embodiment of an entry section layout according to the present invention. Detailed description of the invention and preferred embodiments
- FIG. 3 A schematic of the new solution is presented in FIG. 3.
- the scope of the present invention relates to an installation comprising any suitable welder 6. It is to be noted that the welder illustrated in FIG. 3 is an example of a commercially available welder.
- the upper looping table is retractable and can be lifted.
- the upper table is preferably first retracted by a hydraulic or pneumatic cylinder and then lifted by two hydraulic or pneumatic cylinders situated near the common pinch roll.
- the lower loop can thus be built when the upper table is lifted.
- a running coil N (N integer >0) is processed through the bottom or lower entry level, comprising the lower table.
- the next coil N+l is threaded, prepared, and cropped at the shear on the upper or top entry level, comprising the upper table.
- the new head end of coil N+l is placed in front of the common pinch roll in a waiting position.
- the tail end of coil N successively leaves the pay-off reel mandrel, the bottom entry level and the common pinch roll, a loop being created at the exit side of the welder by two loop rolls (not shown) for centering the tail end .
- the upper threading table combines three functions. The first one is to store the head end of next coil N+l, already close to the common pinch roll of the welder. The second function is to create a loop on this table. The third function is to allow the strip threading of strip N+2 to the common pinch roll during the loop creation and welding of strip N+l in the shadow time of the welding process.
- a special pivotable centering wheel 7 will be moved to the strip by a hydraulic or pneumatic cylinder. This allows a better movement of the loop during the centering process with the integrated centering device of the welder. With this equipment, the accuracy of weld seam centering can be improved to reduce further problems during strip tracking, side trimming and cold rolling. After the centering, the pivotable centering wheel 7 will be retracted to allow the transport of the strip during further welding and notching accelerations.
- the new coil N+l is further fed to the line via the upper entry level.
- the next coil N+2 is threaded, prepared, and cropped at the shear on the lower entry level.
- the new head end of coil N+2 is placed in front of the common pinch roll in a waiting position.
- the tail end of coil N+l successively leaves the pay-off reel mandrel, the upper entry level and the common pinch roll, a loop being created at the exit side of the welder by two loop rolls (not shown) for centering the tail end.
- the new head end of the coil N+2 at the lower level is threaded by the common pinch roll to the entry side of the welder.
- the top transfer table is retracted and lifted upwards thanks to the hydraulic or pneumatic cylinders.
- the height of the loop will be preferably controlled by a light barrier.
- a loop is created at the bottom transfer table. After creation of the loop, the top roll of the common pinch roll is retracted by the long stroke cylinders, to allow the movement of the strip during the centering process.
- the line according to the invention can also process thick hot rolled strips.
- the looping table according prior art can be eliminated, and therefore the time-to-transfer of the strip from the common pinch roll to the welder is eliminated as well.
- the time gain is typically between 5 and 7 seconds for each entry cycle time.
- this new entry design thus allows reducing the production time by roughly 2% (meaning increase in productivity) for a PL/TCM of 2 million tons capacity, depending however on incoming coils and line configuration.
- this invention has the advantage of allowing a better loop creation. Thanks to the additional provision of the retractable upper table and the centering wheel a better centering for heavy gages is possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Metal Rolling (AREA)
- Replacement Of Web Rolls (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13702947.6A EP2812133B1 (en) | 2012-02-06 | 2013-01-24 | Entry section of a pickling line, of a continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installation |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261595386P | 2012-02-06 | 2012-02-06 | |
EP12162089.2A EP2644291A1 (en) | 2012-03-29 | 2012-03-29 | Entry section of a pickling line, of a continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installation |
EP13702947.6A EP2812133B1 (en) | 2012-02-06 | 2013-01-24 | Entry section of a pickling line, of a continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installation |
PCT/EP2013/051383 WO2013117436A1 (en) | 2012-02-06 | 2013-01-24 | Entry section of a pickling line, of a continuous continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2812133A1 true EP2812133A1 (en) | 2014-12-17 |
EP2812133B1 EP2812133B1 (en) | 2016-05-25 |
Family
ID=48946922
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12162089.2A Withdrawn EP2644291A1 (en) | 2012-02-06 | 2012-03-29 | Entry section of a pickling line, of a continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installation |
EP13702947.6A Active EP2812133B1 (en) | 2012-02-06 | 2013-01-24 | Entry section of a pickling line, of a continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12162089.2A Withdrawn EP2644291A1 (en) | 2012-02-06 | 2012-03-29 | Entry section of a pickling line, of a continuous tandem cold mill (tcm) or of a pickling line coupled to tandem cold mill (pl/tcm) installation |
Country Status (10)
Country | Link |
---|---|
EP (2) | EP2644291A1 (en) |
KR (1) | KR101938442B1 (en) |
CN (1) | CN104203444B (en) |
BE (1) | BE1022273B1 (en) |
BR (1) | BR112014016578B1 (en) |
ES (1) | ES2587680T3 (en) |
MY (1) | MY179979A (en) |
PH (1) | PH12014501767A1 (en) |
RU (1) | RU2620223C2 (en) |
WO (1) | WO2013117436A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111958242A (en) * | 2020-08-07 | 2020-11-20 | 昆山一鼎工业科技有限公司 | Full-automatic continuous roll type surface treatment production line |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106311756B (en) * | 2016-10-11 | 2019-02-12 | 山西太钢不锈钢股份有限公司 | One kind avoids thermal tandem rolling stainless steel band steel surface from batching abrasive method |
EP3883701B1 (en) * | 2018-11-23 | 2022-10-19 | John Cockerill S.A. | Flexible cold rolling mill and method for converting the same |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1047506A (en) * | ||||
US2369830A (en) * | 1940-08-04 | 1945-02-20 | United Eng Foundry Co | Strip handling apparatus |
SU108536A1 (en) * | 1955-01-03 | 1956-11-30 | В.Л. Добкин | The method of forming the stock tape to ensure the continuity of the process of rolling and pickling |
US2978805A (en) * | 1955-11-14 | 1961-04-11 | United Eng Foundry Co | Method of and apparatus for handling and joining strip material |
SU452997A1 (en) * | 1972-06-28 | 1986-08-30 | Старо-Краматорский Ордена Трудового Красного Знамени Машиностроительный Завод Им.Серго Орджоникидзе | Apparatus for accumulating strip |
JPS5966922A (en) * | 1982-10-12 | 1984-04-16 | Komatsu Ltd | Coil terminal processing device of coil line |
FR2855991B1 (en) * | 2003-06-12 | 2005-09-09 | Vai Clecim | METHOD FOR MANAGING A CONTINUOUS LINE METAL BAND PROCESSING PLANT AND INSTALLATION FOR IMPLEMENTING THE METHOD. |
CN102172834B (en) * | 2010-12-30 | 2015-04-01 | 宝山钢铁股份有限公司 | Production line and process for continuous rolling of single rack |
-
2012
- 2012-03-29 EP EP12162089.2A patent/EP2644291A1/en not_active Withdrawn
- 2012-11-20 BE BE2012/0780A patent/BE1022273B1/en active
-
2013
- 2013-01-24 KR KR1020147017942A patent/KR101938442B1/en active IP Right Grant
- 2013-01-24 WO PCT/EP2013/051383 patent/WO2013117436A1/en active Application Filing
- 2013-01-24 BR BR112014016578-5A patent/BR112014016578B1/en active IP Right Grant
- 2013-01-24 CN CN201380008284.2A patent/CN104203444B/en active Active
- 2013-01-24 ES ES13702947.6T patent/ES2587680T3/en active Active
- 2013-01-24 MY MYPI2014002158A patent/MY179979A/en unknown
- 2013-01-24 EP EP13702947.6A patent/EP2812133B1/en active Active
- 2013-01-24 RU RU2014135537A patent/RU2620223C2/en active
-
2014
- 2014-08-06 PH PH12014501767A patent/PH12014501767A1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2013117436A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111958242A (en) * | 2020-08-07 | 2020-11-20 | 昆山一鼎工业科技有限公司 | Full-automatic continuous roll type surface treatment production line |
Also Published As
Publication number | Publication date |
---|---|
CN104203444A (en) | 2014-12-10 |
ES2587680T3 (en) | 2016-10-26 |
CN104203444B (en) | 2016-01-20 |
BR112014016578A2 (en) | 2017-06-13 |
KR101938442B1 (en) | 2019-01-14 |
BE1022273B1 (en) | 2016-03-08 |
BR112014016578B1 (en) | 2020-06-23 |
PH12014501767B1 (en) | 2014-11-10 |
EP2812133B1 (en) | 2016-05-25 |
KR20140123481A (en) | 2014-10-22 |
BR112014016578A8 (en) | 2017-07-04 |
RU2014135537A (en) | 2016-04-10 |
WO2013117436A1 (en) | 2013-08-15 |
MY179979A (en) | 2020-11-19 |
PH12014501767A1 (en) | 2014-11-10 |
EP2644291A1 (en) | 2013-10-02 |
RU2620223C2 (en) | 2017-05-23 |
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