CN107557535A - A kind of method for improving refining work and being precisely controlled liquid steel temperature - Google Patents
A kind of method for improving refining work and being precisely controlled liquid steel temperature Download PDFInfo
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- CN107557535A CN107557535A CN201710641115.2A CN201710641115A CN107557535A CN 107557535 A CN107557535 A CN 107557535A CN 201710641115 A CN201710641115 A CN 201710641115A CN 107557535 A CN107557535 A CN 107557535A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The present invention relates to a kind of method for improving refining work and being precisely controlled liquid steel temperature, belong to steel-making control technology field.Technical scheme is：Realize that LF refining molten steel out-station temperature calculates automatically by the automatic computation model of temperature；The model establishes process：According to steel grade, conticaster, even to pour several three-level layers other, based on the bound of standard out-station temperature, with reference to refining work according to the actual conditions of production input bag condition, pour more than recovering state and three groups of parameters of molten steel time to be poured, the other variable of respective layer is converted to, LF refining molten steel out-station temperature upper lower limit value is finally calculated；Refining work only need to be controlled operation according to the LF refining liquid steel temperature calculated automatically in model.The beneficial effects of the invention are as follows：The rational temperature schedule of refining procedure is established, improves the temperature control level of refined molten steel, to improve tundish temperature control qualification rate, it is ensured that continuous casting perseverance pulling rate, improve steel quality.
Description
Technical field
The present invention relates to a kind of method for improving refining work and being precisely controlled liquid steel temperature, belong to steel-making control technology field.
Background technology
Liquid steel temperature is most important parameter and governing factor in sequence casting production process, and temperature controlled level is steel-making
" barometer " of factory's system operation stationarity.Liquid steel temperature is to ensureing continuous casting production process direct motion, reducing raw materials consumption and energy
Consumption, raising slab quality have a great impact.In the case where other conditions are constant, continuous casting billet quality quality and operation
Whether direct motion depends greatly on the temperature of molten steel in bakie in continuous casting, and the height of molten steel temperature in tundish and preceding work
Sequence refining is relevant.At present in actual production, there is problems with refined molten steel temperature control：Ladle baking effect, ladle situation
Differ greatly, the fluctuation of each operation temperature drop is big, is unfavorable for the prediction of ladle molten steel temperature and takes measures in time；For molten steel rhythm not
Equilibrium, cause the time-consuming fluctuation of each operation big, it is difficult to accurate control, to influence temperature control effect；Different steel grades, different ladle classes
Not, the process temperature control in different process path lacks science.The refining industry control liquid steel temperature of prior art, Main Basiss
Work micro-judgment is refined, the high continuous casting reduction of speed phenomenon of temperature often occurs, high-strength automobile steel is smelted and there is also Yin Wengao sometimes and cause
Continuous casting bleed-out；Sometimes conticaster stops pouring accident caused by temperature is low, has had a strong impact on stable smooth operation and the production of steel-making regional production
The stability of quality.
The content of the invention
It is an object of the present invention to provide a kind of method for improving refining work and being precisely controlled liquid steel temperature, it is reasonable to establish refining procedure
Temperature schedule, it is horizontal to improve the temperature control of refined molten steel, to improve tundish temperature control qualification rate, it is ensured that continuous casting is permanent to be drawn
Speed, steel quality is improved, solve above-mentioned technical problem existing for prior art.
The technical scheme is that：
A kind of method for improving refining work and being precisely controlled liquid steel temperature, LF refining steel is realized by the automatic computation model of temperature
Water out-station temperature calculates automatically；The model establishes process：According to steel grade, conticaster, even to pour several three-level layers other, with the outbound temperature of standard
Based on the bound of degree, with reference to refining work according to the actual conditions of production input bag condition, pour more than recovering state and molten steel it is to be poured
Three groups of parameters of time, are converted to the other variable of respective layer, and LF refining molten steel out-station temperature upper lower limit value is finally calculated；Refining
Work only need to be controlled operation according to the LF refining liquid steel temperature calculated automatically in model.By realize out-station temperature from
Dynamic computation model, greatly promotes temperature control level.
Three groups of parameters, bag condition are bag to be used in conjunction, every stove bag or standby bag；Remaining recovering state is poured whether to reclaim；Molten steel
Time to be poured arrives continuous casting casting time for refining is outbound.
Using the present invention, LF refining molten steel tundish temperature qualification rate is effectively improved；Reduce influences to connect because temperature is high
The permanent pulling rate of casting machine；Prevented because low time molten steel of tundish temperature and caused by conticaster stop pouring accident, it is ensured that production it is continuous, steady
Fixed, direct motion；Refining out-station temperature accomplish it is controllable, reduce high-temperature steel, shorten the heating-up time, reduce LF energy costs；The present invention
Refined molten steel temperature stabilization controls, and ensure that steel quality.
The beneficial effects of the invention are as follows：The rational temperature schedule of refining procedure is established, improves the temperature control of refined molten steel
Level, to improve tundish temperature control qualification rate, it is ensured that continuous casting perseverance pulling rate, improve steel quality.
Brief description of the drawings
Fig. 1 is schematic flow sheet of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
A kind of method for improving refining work and being precisely controlled liquid steel temperature, LF refining steel is realized by the automatic computation model of temperature
Water out-station temperature calculates automatically；The model establishes process：According to steel grade, conticaster, even to pour several three-level layers other, with the outbound temperature of standard
Based on the bound of degree, with reference to refining work according to the actual conditions of production input bag condition, pour more than recovering state and molten steel it is to be poured
Three groups of parameters of time, are converted to the other variable of respective layer, and LF refining molten steel out-station temperature upper lower limit value is finally calculated；Refining
Work only need to be controlled operation according to the LF refining liquid steel temperature calculated automatically in model.By realize out-station temperature from
Dynamic computation model, greatly promotes temperature control level.
Three groups of parameters, bag condition are bag to be used in conjunction, every stove bag or standby bag；Remaining recovering state is poured whether to reclaim；Molten steel
Time to be poured arrives continuous casting casting time for refining is outbound.
The automatic computation model of LF refining molten steel out-station temperature, be according to steel grade, conticaster, even to pour several three-level layers other, with mark
Based on the bound of quasi- out-station temperature, with reference to refining work according to the actual conditions of production input bag condition, pour more than recovering state and
Three groups of parameters of molten steel time to be poured, are converted to the other variable of respective layer, are finally calculated above and below LF refining molten steel out-station temperature
Limit value.
Refining work need to only control according to the liquid steel temperature calculated automatically in model, by the automatic meter for realizing out-station temperature
Model is calculated, greatly promotes temperature control level.
Automatic computation model：Steel grade, conticaster, even standard three-dimensional shaping number can be used by pouring the not intrinsic parameter list of three-level layer
Group is used as data store organisation, and three-dimensional subscript coefficient is then as steel grade, conticaster, the dimension values for even pouring three sub- arrays of number.
Data flowchart is as shown in Figure 1.
(1) data file
Standard out-station temperature bound is stored using three-dimensional shaping array, abc is dimension coefficient, and code is as follows：
Int std_min [2] [3] [2]=
{1615,1580,1605,1595,1600,1590,1605,1565,1600,1580,1585,1570}；
Int std_max [2] [3] [2]=
{1625,1590,1615,1610,1610,1600,1615,1580,1610,1595,1595,1585}；
int a,b,c；
(2) determine that layer is other
When operative employee determines that drop-down selects certain dimension coefficient, actual algorithm is following, and (abc is similar, only enumerates a):
(3) bag condition conversion tb1, tb2 parameter logistics
It is as follows corresponding to one group of tb1, tb2, transcode for the other bag condition of each layer：
(4) remaining situation conversion tj parameter logistics are poured.
It is as follows corresponding to one group of tj, transcode for the other bag condition of each layer：
(5) time conversion td parameter logistics to be poured.
Hand defeated time, types of variables int are carried out by operative employee herein, and input limitation (being [0,50]) is set
For each time range, a certain td is both corresponded to, then answers alternative condition selection algorithm logic, code is as follows：
(6) calculating of out-station temperature bound
Result is int types (float types can be changed at any time by being such as actually needed, and set accurate digit), and formula is such as
Under：
Int ref_out_min=std_min [a] [b] [c]+tb1+tj+td；
Int ref_out_max=std_max [a] [b] [c]+tb2+tj+td；
(7) treatment of details
, it is necessary to which operating personnel are confirmed whether to select to be calculated again after each calculating terminates, be able to need not such as exit
This calculation procedure.(it can be set herein and redirect label！) basic code logic is as follows：
Certain steel mill refined molten steel tundish temperature qualification rate lifting to 98.5%, is smelted high-strength using the method for the present invention
Automobile steel tundish temperature qualification rate reaches 100%, it is ensured that the permanent pulling rate of conticaster, ensure that the steady of product quality and production
Fixed, direct motion.
Claims (2)
- A kind of 1. method for improving refining work and being precisely controlled liquid steel temperature, it is characterised in that：It is real by the automatic computation model of temperature Existing LF refining molten steel out-station temperature calculates automatically；The model establishes process：According to steel grade, conticaster, even to pour several three-level layers other, with Based on the bound of standard out-station temperature, input bag condition according to the actual conditions of production with reference to refining work, pour remaining recovering state Time three group parameters to be poured with molten steel, are converted to the other variable of respective layer, are finally calculated on LF refining molten steel out-station temperature Lower limit；Refining work only need to be controlled operation according to the LF refining liquid steel temperature calculated automatically in model.
- A kind of 2. method system for improving refining work and being precisely controlled liquid steel temperature according to claim 1, it is characterised in that：Institute Three groups of parameters are stated, bag condition is bag to be used in conjunction, every stove bag or standby bag；Remaining recovering state is poured whether to reclaim；The molten steel time to be poured is Refine and outbound arrive continuous casting casting time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710641115.2A CN107557535A (en) | 2017-07-31 | 2017-07-31 | A kind of method for improving refining work and being precisely controlled liquid steel temperature |
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| CN201710641115.2A CN107557535A (en) | 2017-07-31 | 2017-07-31 | A kind of method for improving refining work and being precisely controlled liquid steel temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957918A (en) * | 2020-09-08 | 2020-11-20 | 福建三钢闽光股份有限公司 | Control method for stabilizing superheat degree of 400VN steel in starting process |
| CN116393661A (en) * | 2023-06-07 | 2023-07-07 | 山东钢铁股份有限公司 | Method and device for determining steel feeding temperature |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603026A (en) * | 2003-09-29 | 2005-04-06 | 宝山钢铁股份有限公司 | Method for real-time estimating temperature of liquid steel in RH fining furnace |
| CN102867220A (en) * | 2012-06-25 | 2013-01-09 | 攀钢集团研究院有限公司 | Method for forecasting temperature of refined molten steel in ladle refining furnace in real time |
| CN103205537A (en) * | 2013-03-21 | 2013-07-17 | 河北钢铁股份有限公司邯郸分公司 | Continuous measuring method for molten steel temperature during LF (ladle furnace) finery production procedure |
| CN103276147A (en) * | 2013-06-06 | 2013-09-04 | 鞍钢股份有限公司 | Forecasting method for molten steel temperature in LF refining process |
-
2017
- 2017-07-31 CN CN201710641115.2A patent/CN107557535A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603026A (en) * | 2003-09-29 | 2005-04-06 | 宝山钢铁股份有限公司 | Method for real-time estimating temperature of liquid steel in RH fining furnace |
| CN102867220A (en) * | 2012-06-25 | 2013-01-09 | 攀钢集团研究院有限公司 | Method for forecasting temperature of refined molten steel in ladle refining furnace in real time |
| CN103205537A (en) * | 2013-03-21 | 2013-07-17 | 河北钢铁股份有限公司邯郸分公司 | Continuous measuring method for molten steel temperature during LF (ladle furnace) finery production procedure |
| CN103276147A (en) * | 2013-06-06 | 2013-09-04 | 鞍钢股份有限公司 | Forecasting method for molten steel temperature in LF refining process |
Non-Patent Citations (2)
| Title |
|---|
| 朱鸿民等: "《冶金研究（2010年）》", 31 December 2010, 冶金工业出版社 * |
| 谷茂强等: "基于案例推理的钢水温度在线管控模型", 《钢铁研究学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957918A (en) * | 2020-09-08 | 2020-11-20 | 福建三钢闽光股份有限公司 | Control method for stabilizing superheat degree of 400VN steel in starting process |
| CN111957918B (en) * | 2020-09-08 | 2021-10-26 | 福建三钢闽光股份有限公司 | Control method for stabilizing superheat degree of 400VN steel in starting process |
| CN116393661A (en) * | 2023-06-07 | 2023-07-07 | 山东钢铁股份有限公司 | Method and device for determining steel feeding temperature |
| CN116393661B (en) * | 2023-06-07 | 2023-08-08 | 山东钢铁股份有限公司 | Method and device for determining steel feeding temperature |
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Application publication date: 20180109 |