CN1059676A - Cut deal controlled rolling slab is treated warm method and apparatus - Google Patents
Cut deal controlled rolling slab is treated warm method and apparatus Download PDFInfo
- Publication number
- CN1059676A CN1059676A CN 91105075 CN91105075A CN1059676A CN 1059676 A CN1059676 A CN 1059676A CN 91105075 CN91105075 CN 91105075 CN 91105075 A CN91105075 A CN 91105075A CN 1059676 A CN1059676 A CN 1059676A
- Authority
- CN
- China
- Prior art keywords
- slab
- roller
- rolling
- roll
- finishing mill
- 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.)
- Pending
Links
Images
Landscapes
- Metal Rolling (AREA)
Abstract
The present invention treats warm method and apparatus for cut deal controlled rolling slab, and its major technique feature is that the roll-type stand that warm usefulness is treated in a confession is respectively installed in the master roller both sides behind finishing mill or single milling train.When slab is finished first rolling process (the former passages of finish rolling) on finishing mill, the of short duration Wen Houzai for the treatment of enters on the roll-type stand that is installed in behind the finishing mill and treats temperature on the slave front roller-way, treat that subsequently preorder two boards base finishes after second rolling process and follow-up two boards base are finished first rolling process on the finishing mill, it is promptly finished and treats temperature, and it is rolling to carry out second rolling process.This method and apparatus structure are simple, small investment, and instant effect is applicable to existing Heavy Plate Plant.
Description
The invention belongs to rolling technical field.
Controlled rolling is the rolling new technology of steel plate specials such as production shipbuilding, pipeline, container, boiler and crossbeam, and it can not only be energy-conservation, and can improve the obdurability of medium plate effectively.Its main cause is the inherent metallographic structure that controlled rolling can improve steel plate, as crystal grain thinning, refinement and disperse precipitated phase (second mutually).Reach above-mentioned effect, must be controlled at lower scope to the finishing temperature of steel plate, be generally≤900 ℃; Simultaneously, improve the deflection of low thermophase (≤900 ℃).
Yet, in the process of rolling cut deal, can not reach lower finishing temperature naturally, when adopting the controlled rolling technology, must implement stop to roll cooling midway to the slab before the finish to gauge, treat temperature drop to≤900 ℃ the time, continue to be rolled into the finished product thickness of slab again.For this reason, cause milling train to be forced to stop rolling, had a strong impact on productivity ratio.
Stop rolling the warm problem for the treatment of for solving in the controlled rolling process, occurred several different methods both at home and abroad.Japan's " research of system iron " is on nineteen eighty-two No. 310 " Wide and Thick Slab special edition ", introduced several methods of not stopping to roll and treating temperature: first method when single chassis or finishing mill before or preceding and after roller-way longer, the polylith slab can realization be treated temperature before milling train or on the roller-way of milling train front and back.But roller-way is all very short before and after the milling train of existing most cut deal steel mill, realize that this treats warm method, when need prolong roller-way, also must prolong factory building, and milling train moves after also wanting, and is difficult to realize from existence conditions.Second method is before unit or between roughing mill and finishing mill, install one and can cut off the roll line master roller, and be loaded with the travelling platform of three row's roller-ways, wherein row's roller-way is aimed at the roll line master roller, make slab current between milling train, two row's roller-ways are treated temperature usefulness as slab in addition.The major defect of this method is in the both sides of roll line master roller, and the place that can hold two roller-ways must respectively be arranged, and general Heavy Plate Plant is not have this vacant lot; And locomotives that carry three row's roller-ways not only load heavily, also are loaded with the device that drives roller-way, require anti-high temperature and de-iron squama etc., thus complex structure, maintenance difficult.The third method is between thick smart two frames or centers on the changing side of finishing mill, sets up the side roller-way parallel with master roller.The major defect of this method is that investment is big; It is big to account for factory's inner area; The roll change difficulty.
And existing Heavy Plate Plant (especially China), the front and back roller-way of its milling train is not long, factory building is not wide, apparatus arrangement is all very compact, realize above-mentioned treat the temperature method all very difficult.
The object of the present invention is to provide and a kind ofly treat that temperature is convenient, equipment simple, investment is little, it is little, instant effect to take up an area of, can not only realize the temperature for the treatment of of controlled rolling, and milling train do not stop to roll, the production of milling train had not only been guaranteed the quality but also warm method and apparatus is treated in the controlled rolling of guarantor's amount.
For achieving the above object, main technical schemes of the present invention is the master roller both sides behind finishing mill (or single milling train), and each installs a bench roller formula stand, promptly treats warm stand.1st, 2 blocks of slabs are finished first rolling process (the former passages of finish rolling) through finishing mill, from the milling train front roller-way of short duration treat temperature after, the roll-type stand that enters both sides is more respectively treated temperature, to enter finishing mill rolling for the 3rd block of slab thereupon, finish first rolling process, and before then returning finishing mill, at this moment the 1st block of slab for the treatment of temperature turns back to milling train from the roll-type stand, it is rolling to carry out second rolling process (several passages after the finish rolling), and rolls into finished product; When the 1st block of slab rolls into finished product, when the straightener direction was carried, the 3rd block of slab was also with thereafter, and neutral gear enters on another empty roll-type stand and treats temperature by milling train; At this moment the 4th block of slab followed thereafter, carries out the rolling of first rolling process; In the time of before the 4th block of slab finished first rolling process to return milling train, the 2nd block of slab gets off from the roll-type stand, returns milling train, carries out the rolling of second rolling process (finish to gauge journey), rolls into finished product.And toward the conveying of straightener direction, the 4th block of slab followed thereafter, and the empty frame of crossing enters on the roll-type stand and treats temperature; Then the 5th block of slab carries out the rolling of first rolling process, and when returning before the milling train after rolling, the 3rd block of slab followed and entered milling train thereafter, finishes the rolling of second rolling process.The temperature for the treatment of before second rolling process had both been finished in so tandem rolling, had realized that again milling train does not stop production, and guaranteed both quality and quantity to finish production task.
If the master roller behind the finishing mill is longer, also available a part of roller-way replaces a bench roller formula stand, and another stand still places a side of master roller.
Except that technique scheme, when treating that warm slab is thicker, when requiring time of staying temperature (＞120 second) longer, then can be by being installed in a pair of Water Curtain Cooling Device before the roll-type stand, the cooling of slab is accelerated in the cooling of spraying water up and down, after the bath cooling, enter the roll-type stand again and treat temperature, after this time of staying temperature generally can reach 90 seconds, is enough to make internal-external temperature difference to be tending towards evenly satisfying rolling requirement.
The above technical scheme is based on the method that two stages are generally all adopted in modern cut deal controlled rolling, it is the phase I (comprise on the roughing mill all passages and finishing mill on first rolling process) with about slab rolling to 1000 ℃, stop then to roll and treat temperature, when temperature drop to≤begin rolling (being the second road rolling process on the finishing mill) of second stage after 900 ℃ again, up to being rolled into the finished product thickness of slab.Treat that Wen Wendu is about 100 ℃.
In order to improve the institutional framework of steel, improve the combination property of steel plate, get a desired effect, in technique scheme, except requiring finishing mill first rolling process to need to stop rolling (preventing mixed crystal) and (to enter the non-recrystallization district when 1000 ℃ of left and right sides≤900 ℃ of beginning second rolling processes, make the distortion accumulation) outside, must guarantee that also second rolling process has enough total deformations, crystal grain is elongated, increase crystal boundary and intracrystalline and produce deformation band, improve the nucleation rate of crystallization again (or recrystallization), reach the purpose of crystal grain thinning.Usually the desired total deformation of this rolling process is controlled at 30～50%.
According to available data and test data of the present invention, unit thickness cool time and actual measurement slab temperature drop curve (air cooling) under the roughed bloom air cooling situation have been drawn, utilize this two curve maps, can be according to beginning to treat Wen Wendu and treat that warm finishing temperature determines the cool time that the slab unit thickness is required, or according to slab thickness and begin to treat Wen Wendu and treat that warm finishing temperature determines time of staying temperature.
Compared with prior art, the present invention has following advantage:
1. small investment is compared with increasing the capable roller-way of side ring, can save investment 80%.
2. floor space is little, does not influence in the factory current.
3. do not hinder existing roller replacing operation.
4. milling train does not stop to roll, and can produce continuously.
5. the time of staying temperature required according to slab, convertible method of operating satisfies the needs of all thickness specification.
6. equipment is simple, instant effect.
Description of drawings
Accompanying drawing 1 is treated warm device schematic diagram for the controlled rolling slab.
Accompanying drawing 2～6 is treated warm flow state schematic diagram for slab.
Accompanying drawing 7 is unit thickness figure cool time under the roughed bloom air cooling situation
Accompanying drawing 8 is actual measurement slab temperature drop curve (air cooling) figure
In the accompanying drawing 1,11 is finishing mill (or single milling train), and 12 is the milling train front roller-way, and 13 is back mill table, and 14,15 is the roll-type stand, and 16 is Water Curtain Cooling Device.Roll-type stand 14,15 is arranged on the both sides of master roller behind the milling train; The body of roll of stand middle roller is long, roller footpath roll spacing is same as master roller fully, but roller collective or single rotation, roller swings with certain speed, swinging distance is the hemicycle girth of roller, purpose makes cooling evenly, roll-type stand effective length treats that warm slab length adds the girth of upper roller, stand two ends handicapping blocking means for the longest.Water Curtain Cooling Device is placed in the front end of roll-type stand.Establish a packaged type water-cooled cover plate on the stand, purpose is to absorb radiant heat, quickens to treat the cooling of warm slab, and improves environment in the factory.Stand links to each other with master roller with crossbeam, by hoist engine steel wire (or chain) or cylinder, make treat warm slab can be between master roller and stand dealing traversing.
Be used for slab before the milling train and treat behind the one section roller-way, milling train of temperature and the transmission of one section roller-way that the roll-type stand connects, can be whole consistent with other master roller, can stop again or rotate separately, prevent to treat warm slab and just together be rolled at rolling slab; These two sections roller-ways are provided with thermo detector, measure temperature drop.
In the accompanying drawing 2, the 1st, 2 block of slab just treated temperature on the roll-type stand, and the 3rd block of slab carrying out the rolling of first rolling process.
In the accompanying drawing 3, the 1st block of slab carries out that second rolling process is rolling, and the 2nd block of slab still treated temperature on stand 15, and the 3rd block of slab just treated temperature on milling train front roller-way 12.
In the accompanying drawing 4, it is rolling that the 1st block of slab finished second rolling process, carries to the straightener direction, and the 2nd, 3 block of slab treated temperature respectively on stand 15,14, and the 4th block of slab carries out the rolling of first rolling process.
In the accompanying drawing 5, it is rolling that the 2nd block of slab finished second rolling process, carries to the straightener direction, and the 3rd, 4 block of slab treated temperature on stand 14,15, and the 5th is just being carried out the rolling of first rolling process.
In the accompanying drawing 6, the 3rd block of slab finished the rolling of second rolling process, carries to the aligning direction, and the 4th, 5 block of slab treated temperature respectively on stand 15,14, and the 6th block of slab carries out the rolling of first rolling process.
By finding out in Fig. 2～6; except that the 1st, 2 block of slab; treat that since the 3rd block of slab temperature is in normalization; the time of staying temperature of every block of slab is the temporal summation of second rolling process of first rolling process of two boards base and two boards base; for example, the time of staying temperature of the 3rd block of slab is the temporal summation of first rolling process of second rolling process of the 1st, 2 block of slab and the 4th, 5 block of slab.This total time can be adjusted slab and begin to treat warm temperature, treat the temperature of temperature end of a period, the parameters such as deflection size of first and second rolling processes according to thickness specification and the performance requirement to the finished product steel plate.
In the accompanying drawing 7, abscissa be slab begin to treat Wen Wendu (℃), ordinate is cooling velocity (a second/millimeter), T for treat warm finishing temperature (℃).
In the accompanying drawing 8, abscissa is slab time of staying temperature (second), ordinate be slab treat warm finishing temperature (℃), h is slab thickness (millimeter).
Claims (8)
1, the cut deal controlled rolling divides two stages to carry out, phase I comprises on the roughing mill all first rolling process (the former passages of finish rolling) on the passages and finishing mill, second stage is second rolling process (several passages after the finish rolling) on the finishing mill, a kind of slab of controlled rolling is treated warm method, it is characterized in that slab finishes first rolling process on finishing mill, the of short duration Wen Houzai for the treatment of enters to be installed in behind the finishing mill and treats temperature on the roll-type stand on the slave front roller-way, this treats that warm slab waits for that subsequently preorder two boards base finishes after second rolling process and follow-up two boards base are finished first rolling process on the finishing mill, it is promptly finished and treats temperature, and it is rolling to carry out second rolling process; Slab begins to treat that Wen Wendu is about 1000 ℃, treats warm finishing temperature≤900 ℃, and the second rolling process total deformation is controlled at 30～50%.
2, slab according to claim 1 is treated warm method, it is characterized in that when treating that warm slab is thicker, then sprays water after the cooling by being installed in Water Curtain Cooling Device before the roll-type stand, enters on the roll-type stand again and treats temperature.
3, slab according to claim 1 is treated warm method, it is characterized in that when the master roller behind the finishing mill is longer, can utilize this a part of roller-way to replace a bench roller formula stand to treat temperature.
4, a kind of described controlled rolling slab of claim 1 that is used for is treated warm device, it is characterized in that it by the two bench roller formula stands that are installed in master roller both sides behind the finishing mill with the Water Curtain Cooling Device before being installed in stand, and the part master roller before and after the finishing mill is formed.
5, device according to claim 4 is characterized in that body of roll length, roller footpath, the roll spacing of roll-type stand middle roller is same as master roller fully.
6, according to claim 4 and 5 described devices, but it is characterized in that roller collective or single rotation on the roll-type stand, roller swings with certain speed, and swinging distance is half girth of roller.
7, device according to claim 4, the effective length that it is characterized in that the roll-type stand is the longest length for the treatment of warm slab.
8, device according to claim 4 is characterized in that the roll-type stand is provided with a movably water-cooled cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105075 CN1059676A (en) | 1991-08-01 | 1991-08-01 | Cut deal controlled rolling slab is treated warm method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105075 CN1059676A (en) | 1991-08-01 | 1991-08-01 | Cut deal controlled rolling slab is treated warm method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1059676A true CN1059676A (en) | 1992-03-25 |
Family
ID=4906962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91105075 Pending CN1059676A (en) | 1991-08-01 | 1991-08-01 | Cut deal controlled rolling slab is treated warm method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059676A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873104A (en) * | 2011-07-13 | 2013-01-16 | 上海优控科技有限公司 | Medium width thick plate controlled rolling technology |
| CN103143564A (en) * | 2013-03-15 | 2013-06-12 | 济钢集团有限公司 | Batch rolling method and control system based on main and auxiliary roller ways and double-rack four-high mill |
| CN103706645A (en) * | 2013-12-16 | 2014-04-09 | 攀钢集团西昌钢钒有限公司 | Method for shortening temperature holding time of intermediate billet in process of hot continuous rolling |
| CN103934273A (en) * | 2014-03-03 | 2014-07-23 | 济钢集团有限公司 | Automatic water-cooling roller cover plate |
| CN104942026A (en) * | 2015-06-16 | 2015-09-30 | 河北钢铁股份有限公司邯郸分公司 | Moderate-thickness plate temperature-control rolling process making efficient use of lateral temperature waiting roll tables |
| CN106040749A (en) * | 2016-06-21 | 2016-10-26 | 首钢京唐钢铁联合有限责任公司 | Rough rolling rhythm control method |
| CN110449464A (en) * | 2019-08-08 | 2019-11-15 | 中冶赛迪工程技术股份有限公司 | A kind of extended type Medium and Heavy Plate Rolling technique and its rolling device |
| CN115090669A (en) * | 2022-05-07 | 2022-09-23 | 江苏沙钢集团淮钢特钢股份有限公司 | Efficient bar controlled rolling method |
-
1991
- 1991-08-01 CN CN 91105075 patent/CN1059676A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873104A (en) * | 2011-07-13 | 2013-01-16 | 上海优控科技有限公司 | Medium width thick plate controlled rolling technology |
| CN103143564A (en) * | 2013-03-15 | 2013-06-12 | 济钢集团有限公司 | Batch rolling method and control system based on main and auxiliary roller ways and double-rack four-high mill |
| CN103706645A (en) * | 2013-12-16 | 2014-04-09 | 攀钢集团西昌钢钒有限公司 | Method for shortening temperature holding time of intermediate billet in process of hot continuous rolling |
| CN103934273A (en) * | 2014-03-03 | 2014-07-23 | 济钢集团有限公司 | Automatic water-cooling roller cover plate |
| CN103934273B (en) * | 2014-03-03 | 2015-11-18 | 济钢集团有限公司 | A kind of from water cooling roller channel cover plate |
| CN104942026A (en) * | 2015-06-16 | 2015-09-30 | 河北钢铁股份有限公司邯郸分公司 | Moderate-thickness plate temperature-control rolling process making efficient use of lateral temperature waiting roll tables |
| CN106040749A (en) * | 2016-06-21 | 2016-10-26 | 首钢京唐钢铁联合有限责任公司 | Rough rolling rhythm control method |
| CN106040749B (en) * | 2016-06-21 | 2018-06-22 | 首钢京唐钢铁联合有限责任公司 | Rough rolling rhythm control method |
| CN110449464A (en) * | 2019-08-08 | 2019-11-15 | 中冶赛迪工程技术股份有限公司 | A kind of extended type Medium and Heavy Plate Rolling technique and its rolling device |
| CN115090669A (en) * | 2022-05-07 | 2022-09-23 | 江苏沙钢集团淮钢特钢股份有限公司 | Efficient bar controlled rolling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0841995B1 (en) | High-speed thin-slabbing plant | |
| US5810069A (en) | Process for the production of a strip, a pre-strip or a slab | |
| CA2188525C (en) | Production plant for continuously or discontinuously rolling hot strip | |
| CA2314171C (en) | Method and installation for the continuous production of hot-rolled, thin flat products | |
| CN110116135B (en) | Endless rolling production method for rod and wire products | |
| KR20000004992A (en) | Method and equipment for manufacturing heat rolling strip steel | |
| DE69606137T2 (en) | Process and plant for rolling strips and sheets | |
| RU2491143C2 (en) | Plunger-type device for laminar cooling | |
| US3289449A (en) | Method and apparatus for cooling strip | |
| BG60451B1 (en) | Method and an installation for producing steel strip reels | |
| CN1047334C (en) | Method and apparatus for heat rolling of continouslly cast blocks into band or shaped steet | |
| CN1059676A (en) | Cut deal controlled rolling slab is treated warm method and apparatus | |
| WO1995013155A1 (en) | In-line heat treatment of continuously cast steel strip | |
| CN101298081A (en) | Single stand four-roller steckel mill cross-connection control rolling technique | |
| CN1680051B (en) | Slab billet continuous casting and tandem rolling equipment and method | |
| CN210614644U (en) | Rolling device suitable for lengthened medium plate | |
| CN112705569A (en) | Steckel mill production line with ultra-short distance arrangement and rolling process | |
| KR100424528B1 (en) | Method and installation for production of ferritic hot-rolled strip | |
| CN1923388A (en) | Stainless compound steel plate belt blank spray casting, tandem rolling apparatus and production method thereof | |
| RU2368438C2 (en) | Package unit for receiving of hot-rolled steel strip | |
| CN110238207A (en) | A kind of edge part shading device for Strip control cooling system | |
| JP3293933B2 (en) | Method for precision rolling of wire rod or rolled material having round cross section and rolling line | |
| CN1714957A (en) | Method and device for producing different metal material composite plate and strip | |
| MXPA00003686A (en) | Method of wire rolling and rolling mill. | |
| JP2692516B2 (en) | High-strength steel sheet manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |