CN202290724U - Device for increasing hourly output of single-frame medium plate mill - Google Patents
Device for increasing hourly output of single-frame medium plate mill Download PDFInfo
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- CN202290724U CN202290724U CN 201120448057 CN201120448057U CN202290724U CN 202290724 U CN202290724 U CN 202290724U CN 201120448057 CN201120448057 CN 201120448057 CN 201120448057 U CN201120448057 U CN 201120448057U CN 202290724 U CN202290724 U CN 202290724U
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Abstract
A device for increasing hourly output of a single-frame medium plate mill is characterized in that the process equipment of the single-frame mill is arranged in a sequence as follows: a heating furnace, a descaling box, a middle blank to-be-heated bracket, a rolling mill, a roller way and an ACC (steel accelerated cooling device). The device provided by the utility model can meet the process requirements of middle blank accelerated cooling without increasing equipment; the middle blank has uniform temperature and a good plate shape after accelerated cooling and meets finish rolling requirements after re-reddening, and the surface of a steel plate rolled does not have abnormal structure; and the hourly output of the mill is increased to 22 pieces.
Description
Technical field
The utility model belongs to the Iron and Steel Production technology, particularly relates to a kind of device that improves single chassis jobbing sheet-rolling mill hourly output.
Background technology
In the Iron and Steel Production, generally rolling parameters such as the rolling temperature through each passage in control heating-up temperature, the operation of rolling, drafts, carry out the control of austenitic state, for obtaining tiny accumulation conditions such as phase-change organization in the cooling procedure of back.The key element of austenitic state mainly comprises what of the size of austenite grain size, the height that includes energy, internal flaw etc.Controlled rolling can be divided into following three types: austenite recrystallization controlled rolling (be called not only the controlled rolling of I type), austenite non-recrystallization district's controlled rolling (but also being called the controlled rolling of II type) and (γ+α) two-phase section controlled rolling.
Rolled piece perhaps carries out the alternate manner cooling to rolled piece before milling train or the cooling of moving about of back mill table, side roller-way when treating temperature at present.In the two-shipper frame is arranged, to select the cooling of moving about of intermediate blank roller-way between milling train is needed only the delay table long enough, controlled rolling treats that temperature will not influence the milling train hourly output.General controlled rolling hourly output is about 30.
Single chassis jobbing sheet-rolling mill production controlled rolling steel plate adopts the rolling in batches intermediate blank of carrying out to treat temperature or steel plate is raised out roller-way treat temperature.Output is lower during the controlled rolling of single chassis steel plate, and general controlled rolling hourly output is about 14.
Existing technological deficiency: existing single chassis control is adopted rolling in batches; The intermediate blank time of staying temperature is long; And causing rolling rhythm slow, the milling train hourly output is low, does not make full use of steel plate acceleration cooling system ACC (steel plate accelerated cooling device) accelerated cooling device behind the milling train.Adopt other physics with temperature (like the water pipe water spray), cause the intermediate blank inhomogeneous cooling even, intermediate blank wooden dipper Qu Yanchong.Reducing the intermediate blank time of staying temperature, is the effective way that improves singlestandmill controlled rolling hourly output.
The utility model content
The purpose of the utility model provides a kind of device that overcomes the raising single chassis jobbing sheet-rolling mill hourly output of above-mentioned prior art weak point.The utility model device comprises by treating before the milling train that warm frame, singlestandmill, steel plate acceleration cooling system ACC form.
The technical scheme of the utility model: a kind of device that improves single chassis jobbing sheet-rolling mill hourly output, singlestandmill process equipment order of placement is followed successively by: heating furnace, De-scaling box, intermediate blank is treated warm support, milling train, roller-way, ACC.
Heating furnace is a walking beam furnace, is divided into preheating section, first bringing-up section, second bringing-up section, soaking zone control heating, and slab is heated to suitable rolling temperature, and the slab requirement temperature of coming out of the stove is even; The inherent roller-way of de-scaling casing respectively disposes three up and down and gets rid of the squama nozzle, and itself and steel slab surface angle are 12～15 °, and the slab of coming out of the stove is water under high pressure removal steel slab surface iron scale through the out-of-date 1800MPa of the ejecting left and right sides; Intermediate blank treats that warm support is hydraulically powered four-bar mechanism, and (support holds up intermediate blank and is supported in the roller-way top during use, and slab also lower roll road slab can be round transported can to hold up intermediate blank; Support is positioned over the roller-way below when not using, and slab is round transported on roller-way); Milling train is the reversing four-high mill that the adhesion type edger roll is arranged, and slab rolling is become the width and the thickness steel plate of requirement; The ACC cooling device is for disposing the accelerated cooling device of laminar flow cooling jet up and down, and steel plate is cooling water flow and roller table speed about out-of-date adjustment, and steel plate is cooled to required technological temperature; The roll line roller-way all is made up of the solid roll of single roller variable frequency regulating speed control, and major function is transportation slab, intermediate blank, steel plate.
Compared with prior art, the utlity model has following advantage: the first, not increase equipment input satisfies the arts demand that intermediate blank is quickened cooling; The second, after intermediate blank is quickened cooling, the intermediate blank temperature evenly, quicken cooling back intermediate blank template good, return and satisfy the finish rolling requirement after red, roll the back surface of steel plate and abnormal structure do not occur, satisfy the requirement of delivery technical conditions; The 3rd, intermediate blank is quickened cooling back rolling rhythm and is obviously improved, and the milling train hourly output is increased to 22.
Description of drawings
Accompanying drawing 1 is a singlestandmill process equipment layout drawing.Among the figure: 1-heating furnace, 2-De-scaling box, 3-intermediate blank is treated warm support, 4-milling train, 5-roller-way, 6-ACC.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment utility model is further specified.
Shown in accompanying drawing: singlestandmill process equipment order of placement is followed successively by: heating furnace 1, and De-scaling box 2, intermediate blank is treated warm support 3, milling train 4, roller-way 5, ACC6.
Heating furnace 1 is a walking beam furnace, and slab is heated to suitable rolling temperature, and the slab requirement temperature of coming out of the stove is even; The inherent roller-way of De-scaling box 2 casings respectively disposes three up and down and gets rid of the squama nozzle, and the slab of coming out of the stove is removed the steel slab surface iron scale through the out-of-date water under high pressure that ejects; Intermediate blank treats to hold up intermediate blank by warm support 3, and (support holds up intermediate blank and is supported in the roller-way top during use, and slab also lower roll road slab can be round transported; Support is positioned over the roller-way below when not using, and slab is round transported on roller-way); Width and thickness steel plate that milling train 4 becomes to require with slab rolling; ACC cooling device 6 is an accelerated cooling device, and steel plate is cooling water flow and roller table speed about out-of-date adjustment, and steel plate is cooled to required technological temperature; Roll line roller-way 5 is made up of solid roll, and major function is transportation slab, intermediate blank, steel plate.
The operation instruction of the utility model: utilize ACC to control intermediate blank template, evenly cooling accurately, improve the output and the quality of milling train controlled rolling steel plate.Adopt three steel tandem rollings on the production line, its processing step is:
(1) first intermediate blank gets into the cooling of ACC laminar flow behind milling train, second block of slab come out of the stove at milling train cogging (roughing), three-lane road base;
(2) second intermediate blank are returned the milling train after-frame and are treated that in steel billet warm frame, first intermediate blank mill product (finish rolling), the 3rd compact advance the De-scaling box de-scaling;
(3) first block plates are rolling successfully to be left milling train, second intermediate blank and puts into roller-way and get into the cooling of ACC laminar flow, the 3rd compact cogging (roughing), the 4th compact through milling train and come out of the stove;
By rolling with the upper type circulation.
Utilize cooling control after rolling equipment to reduce the intermediate blank temperature evenly, fast, return and satisfy the requirement of finish rolling start rolling temperature after red, realize improving the requirement of milling train hourly output; Temperature is 1080 ℃ after the intermediate blank roughing, treats 0.5 ℃/s of warm air cooling speed, is cooled to 850 ℃ of needs 460s (7.67min); The ACC distance of 4 groups of water at interval is 6.4m, intermediate blank length 30m, and intermediate blank comes and goes 72.8s cool time (1.21min), returns red time 2min, i.e. intermediate blank temperature fall time 3.21nin;
Reduce intermediate blank time of staying temperature 4.46min.Reduce the method for time of staying temperature: utilize the ACC cooling, reduce the intermediate blank temperature, guarantee to return 850～900 ℃ of red temperature.Intermediate blank is quickened cooling condition with ACC: more than the controlled rolling type personality board thickness 25mm, treat that warm intermediate blank thickness is 2.5～3.5 times of finished product thicknesses, treats more than the warm intermediate blank thickness 60mm.
Claims (1)
1. device that improves single chassis jobbing sheet-rolling mill hourly output, it is characterized in that: singlestandmill process equipment order of placement is followed successively by: heating furnace, De-scaling box, intermediate blank is treated warm support, milling train, roller-way, ACC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120448057 CN202290724U (en) | 2011-11-14 | 2011-11-14 | Device for increasing hourly output of single-frame medium plate mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120448057 CN202290724U (en) | 2011-11-14 | 2011-11-14 | Device for increasing hourly output of single-frame medium plate mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202290724U true CN202290724U (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120448057 Expired - Lifetime CN202290724U (en) | 2011-11-14 | 2011-11-14 | Device for increasing hourly output of single-frame medium plate mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202290724U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115475835A (en) * | 2022-09-15 | 2022-12-16 | 安阳钢铁股份有限公司 | Method for shortening rolling period of rolling thick steel plate by single-stand rolling mill |
-
2011
- 2011-11-14 CN CN 201120448057 patent/CN202290724U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115475835A (en) * | 2022-09-15 | 2022-12-16 | 安阳钢铁股份有限公司 | Method for shortening rolling period of rolling thick steel plate by single-stand rolling mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |