CN102896148A - Medium plate double-frame rolling load distribution method - Google Patents
Medium plate double-frame rolling load distribution method Download PDFInfo
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- CN102896148A CN102896148A CN201210395478XA CN201210395478A CN102896148A CN 102896148 A CN102896148 A CN 102896148A CN 201210395478X A CN201210395478X A CN 201210395478XA CN 201210395478 A CN201210395478 A CN 201210395478A CN 102896148 A CN102896148 A CN 102896148A
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Abstract
The invention discloses a medium plate double-frame rolling load distribution method, and belongs to the technical field of rolling of medium plates. The rolling cycle is improved by using the same rolling time of two rolling mills a target; and optimal frequency distribution of rough rolling and precision rolling of steel plates with different sizes is determined by analyzing the influencing factors such as the rolling time of different frequencies of the steel plates, the frequency and the turning steel. The determination principle of the temperature-waiting thickness of a steel plate is further determined, namely the temperature-waiting thickness of the steel plate with the size of more than 50 millimeters is 1.92 times the thickness of the steel plate, the temperature-waiting thickness of the steel plate with the size of less than 50 millimeters is 2.11 times the thickness of the steel plate, and the fluctuation range is within +/-20m. The method is applied to production of the steel plates with multiple sizes; and by linking the rolling schedule with the temperature-waiting thickness distribution of the steel plates, direct application of rolling production is facilitated.
Description
Technical field
The present invention relates to the Medium and Heavy Plate Rolling technical field, special formula provides a kind of cut deal Stand Mill rolling load distribution method, is applicable to improve the rhythm of the rolling multi-thickness specification steel plate of Stand Mill production line.
Background technology
The layout of heavy and medium plate mill generally has two kinds of forms: a kind of is the single chassis form, and another kind is the Stand Mill form.Owing to the advantage of Stand Mill aspect productive rate, flexibility, become the main development direction of plate rolling line.For the two-shipper group, how every milling train gives full play to rolling power, how how total rolling load carries out reasonable distribution, two milling trains between two milling trains the rolling rhythm time keeps dynamic equilibrium, and it is smooth and easy to be directly connected to logistics, the problem of performance maximum productivity.
The subject matter of cut deal Stand Mill restriction output is that rolling some kind passage is on the high side, the phenomenon that two milling trains are waited for mutually often occurs, and namely two mill milling rhythm are uneven.In steel rolling is produced, optimize rolling procedure and rolling rhythm control and can realize high-quality, high yield, low energy consumption, thereby reach the purpose of Increasing Production and Energy Saving synergy.More to the theoretical model research of Stand Mill rolling rhythm at present, such as document " the adjustment strategy of Stand Mill heavy and medium plate mill rolling rhythm balance " (metallurgical automation annual meeting in 2010, P97), document " cycle of cut deal Stand Mill Serial Production Line Parameter Perturbation is estimated " (Beijing Institute of Technology's journal, the 6th phase in 2011, P675) etc., the technology that production scene is not had direct guidance, is easy to use.
Summary of the invention
The object of the present invention is to provide a kind of cut deal Stand Mill rolling load distribution method, be easy in actual production, use, make the load balancing between the Stand Mill, thereby improve rolling rhythm, and be applicable to produce the steel plate of multi-thickness specification.
The present invention solves the technical scheme that its technical problem takes:
Concerning the Stand Mill mill form, two seat mill rolling times are identical to be the final goal that improves rolling rhythm, therefore adopts the equal time pattern to carry out the burden apportionment of cut deal Stand Mill, and namely the used time of two seat mills is identical as far as possible.
Two stage rolling of cut deal need to turn steel twice usually at rough rolling step, finish to turn the used time of steel passage greater than the normal used time of rolling pass.Along with the increase of rolled plate length, all the other passage times also increase thereupon, but are not linearity between the two.
Rolling time and passage time by analyzing the different passages of steel plate and turn the influence factor such as steel, determine two seat mills used time in different passage situations, find out the identical as far as possible passage regularity of distribution of two seat mill times.
The best road number of times of the roughing of different size steel plate and finish rolling is allocated as follows:
According to Stand Mill passage Distribution Principles above-mentioned, adopt different intermediate blank to try to roll, the steel plate that obtains the different-thickness specification satisfies above-mentioned passage Distribution Principles and treats temperature thickness.Show the temperature thickness for the treatment of of conditional above statistics passage Distribution Principles satisfies, further determine to treat the relation of temperature thickness and steel plate specification.
Through statistics, as shown in Figure 4, the above specification steel plate of 50mm treats that temperature thickness and steel plate thickness pass are 1.92 times relation; As shown in Figure 5,50mm and treat temperature thickness specification and steel plate thickness as 2.11 times relation take lower steel plate, fluctuating range is all in ± 10m.
Technique effect
The present invention compared with prior art has the following advantages:
1) the Stand Mill rolling time can be realized maximum balanced distribution.
2) consider the impact of steel plate specification, be applicable to the wider scheduling of production of specification limit.
3) rolling procedure and steel plate are treated that the temperature thickness distribution connects consideration, be convenient to steel rolling and produce directly application.
Description of drawings
Fig. 1 is the 30mm specification, treats that temperature thickness 60mm specification Stand Mill rolling time distributes.
Fig. 2 is the 30mm specification, treats that temperature thickness 48mm specification Stand Mill rolling time distributes.
Fig. 3 is the 30mm specification, treats that temperature thickness 90mm specification Stand Mill rolling time distributes.
Fig. 4 is that the above specification of 50mm is treated temperature thickness and steel plate thickness relation.
Fig. 5 is that the following specification of 50mm is treated temperature thickness and steel plate thickness relation.
The specific embodiment
Take rolling 30mm steel plate as example, the specific embodiment of the present invention is described.
Two seat mill rolling times are identical to be the final goal that improves rolling rhythm, therefore adopts the equal time pattern to carry out the burden apportionment of cut deal Stand Mill, and namely the used time of two seat mills is identical as far as possible.
Two stage rolling of 30mm need to turn steel twice usually at rough rolling step, according to determining in the summary of the invention that best passage is distributed as finishing mill rolling pass number and equates with roughing mill rolling pass number.
The 30mm steel plate thickness is below 50mm, and the best treats that temperature thickness can determine according to Fig. 5:
30mm * 2.11=63.3mm, 10mm fluctuates.
, obtain passage shown in Figure 1 and distribute for treating temperature thickness with 60mm, the roughing mill rolling time equates substantially with the finishing mill rolling time, is about 90s this steel plate rolling time 90s.
For implementation result is compared, get and treat as a comparison object of temperature thickness 48mm and 90mm.
When 1) treating temperature thickness 48mm, actual roughing road number of times is 9 passages, and finishing pass is 7 passages, roughing passage=finishing pass+2.As shown in Figure 2, rough rolling step 110s, the finish rolling stage has been used 80s.Although the finish rolling time is shorter, whole rolling rhythm is determined by roughing, steel plate rolling time 110s.
When 2) treating temperature thickness 90mm, actual roughing road number of times is 9 passages, and finishing pass is 11 passages, roughing passage=finishing pass-2.As shown in Figure 3, rough rolling step 90s, the finish rolling stage has been used 130s.Whole rolling rhythm is determined by finish rolling, steel plate rolling time 130s.
Claims (2)
1. cut deal Stand Mill rolling load distribution method, be all mutually target with two seat mill rolling times, improve rolling rhythm, it is characterized in that: the sharing of load that between the cut deal Stand Mill, carries out balance, rolling time and passage time by analyzing steel plate and turn the steel influence factor, determine that the road number of times of the roughing of different size steel plate and finish rolling is allocated as follows:
2. cut deal Stand Mill rolling load distribution method according to claim 1, it is characterized in that, will determine further that steel plate treats temperature thickness: the above specification steel plate of 50mm treats that it is 1.92 times relation that temperature thickness and steel plate thickness close, 50mm and treat temperature thickness specification and steel plate thickness as 2.11 times relation take lower steel plate, fluctuating range is all in ± 10mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210395478.XA CN102896148B (en) | 2012-10-17 | 2012-10-17 | Medium plate double-frame rolling load distribution method |
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| CN201210395478.XA CN102896148B (en) | 2012-10-17 | 2012-10-17 | Medium plate double-frame rolling load distribution method |
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| CN102896148A true CN102896148A (en) | 2013-01-30 |
| CN102896148B CN102896148B (en) | 2015-04-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252355A (en) * | 2013-05-06 | 2013-08-21 | 首钢总公司 | Rolling schedule computing method for medium and thick plate controlled rolling |
| CN109647900A (en) * | 2019-01-02 | 2019-04-19 | 北京科技大学设计研究院有限公司 | Method for control speed under a variety of passage allocation models of nearly spacing Stand Mill roughing mill |
| CN110516312A (en) * | 2019-07-31 | 2019-11-29 | 北京首钢自动化信息技术有限公司 | A kind of no roller cut deal end stage plate shape lock regulation distribution method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60196203A (en) * | 1984-03-19 | 1985-10-04 | Nippon Kokan Kk <Nkk> | Rolling method of steel plate |
| CN1850376A (en) * | 2006-04-29 | 2006-10-25 | 东北大学 | Method for rolling trapezoidal width steel plate |
| CN102266865A (en) * | 2011-05-30 | 2011-12-07 | 山东大学 | Hot/cold rolling load distribution method |
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2012
- 2012-10-17 CN CN201210395478.XA patent/CN102896148B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60196203A (en) * | 1984-03-19 | 1985-10-04 | Nippon Kokan Kk <Nkk> | Rolling method of steel plate |
| CN1850376A (en) * | 2006-04-29 | 2006-10-25 | 东北大学 | Method for rolling trapezoidal width steel plate |
| CN102266865A (en) * | 2011-05-30 | 2011-12-07 | 山东大学 | Hot/cold rolling load distribution method |
Non-Patent Citations (2)
| Title |
|---|
| 崔海涛等: "等时间模式在中厚板双机架轧制中的应用", 《轧钢》 * |
| 张少峰等: "中厚板轧机二级过程控制系统模型的研究与优化", 《宽厚板》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252355A (en) * | 2013-05-06 | 2013-08-21 | 首钢总公司 | Rolling schedule computing method for medium and thick plate controlled rolling |
| CN109647900A (en) * | 2019-01-02 | 2019-04-19 | 北京科技大学设计研究院有限公司 | Method for control speed under a variety of passage allocation models of nearly spacing Stand Mill roughing mill |
| CN110516312A (en) * | 2019-07-31 | 2019-11-29 | 北京首钢自动化信息技术有限公司 | A kind of no roller cut deal end stage plate shape lock regulation distribution method |
| CN110516312B (en) * | 2019-07-31 | 2022-10-21 | 北京首钢自动化信息技术有限公司 | Method for distributing plate shape locking rules of end stage of bending-roller-free medium plate |
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| CN102896148B (en) | 2015-04-22 |
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Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee before: Capital Iron & Steel General Company |