CN106269899A - The mixed method watering width of plate slab control - Google Patents
The mixed method watering width of plate slab control Download PDFInfo
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- CN106269899A CN106269899A CN201510273376.4A CN201510273376A CN106269899A CN 106269899 A CN106269899 A CN 106269899A CN 201510273376 A CN201510273376 A CN 201510273376A CN 106269899 A CN106269899 A CN 106269899A
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Abstract
The present invention provides a kind of mixed method watering width of plate slab control.The method includes: (1) steel-making slab planning system receives the slab production schedule, and is sent to steel-making continuous casting model system；(2), after steelmaking model system calculates steel grade composition parameters respectively, it is sent to conticaster and casts；(3) calculating the Cutting Length of optimum in casting cycle, be sent to flame cutting machine and cut, the real data of cutting is acquired by notice data collecting system simultaneously；(4) steel-making data collecting system is sent to hot rolling data receiving system after the practical situation of casting and cutting is carried out data acquisition；(5) after hot rolling data receiving system receives data, it is sent to hot rolling width model, calculates model respectively and control width accordingly；(6) hot rolling database storage system preserves three set calculation result data of width model, and real time down setting data carries out width equipment control to primary PLC system.The present invention can effectively reduce the mixed base width that waters and extremely lose.
Description
Technical field:
The present invention relates to a kind of mixed method watering width of plate slab control, belong to iron and steel metallurgy production control technology field.
Background technology:
At present both at home and abroad mixed water slab and be mostly judged to the slab of a kind of special handling, follow-up production is mostly that another material produces according to a kind of material or synthetic determination, generally can carry out organization of production according to the material that steel grade strength grade is high, its width control system corresponding is also to be controlled according to a kind of material steel grade, this results in actual production process, when production is rolled down to changeover portion and another material steel grade, cause width control system difficulty, there is bigger fluctuation in width control system, has a strong impact on product quality.
Summary of the invention
:
It is an object of the invention to provide a kind of mixed method watering width of plate slab control, can effectively solve the mixed width of plate slab that waters and control a difficult problem, minimizing is mixed waters the loss extremely of base width.
Above-mentioned purpose is achieved through the following technical solutions:
The mixed method watering width of plate slab control, the method comprises the steps:
(1) steel-making slab planning system receives the slab production schedule formulated according to user's request, needs cast A steel grade slab and B steel grade slab, arranges production, and send relevant plans data to steel-making continuous casting model system；
(2) steelmaking model system calculates A steel grade composition parameters and B steel grade composition parameters respectively, calculates to mix simultaneously and waters changeover portion AB steel grade composition parameters, after having calculated, is sent to conticaster and casts；
(3) in casting cycle, optimizing incision model calculates optimum Cutting Length, is sent to flame cutting machine and cuts, and the real data of cutting is acquired by notice data collecting system simultaneously；
(4) steel-making data collecting system carries out data acquisition to the practical situation of casting and the practical situation of cutting, is sent to hot rolling data receiving system after having gathered；
(5) after hot rolling data receiving system receives data, it is sent to hot rolling width model, calculates model respectively and control width accordingly；
(6) hot rolling database storage system preserves three set calculation result data of width model, and follows the tracks of situation according to scene, and real time down setting data carries out width equipment control to primary PLC system.
The described mixed method watering width of plate slab control, the Cutting Length calculating optimum described in step (3), computing formula such as formula (1),
(1)
In formula:
: casting stream length,
: the strand number of the i-th flow ratio many production of average number,
: the casting stream length of the i-th stream,
: back-end crop length.
The described mixed method watering width of plate slab control, data acquisition described in step (4), including the mixed total length watering slab, width, the length that A steel grade accounts in slab, the length that B steel grade accounts in slab, the length that AB steel grade accounts in slab, steel grade chemical analysis after the arithmetic average calculating of A, B, AB mixing.
Described mixed water the method that width of plate slab controls, described in step (5) to same slab A, tri-regions of B, AB calculate respectively, computing formula such as formula (2),
target_width_X= aim_target_width×rmx_expan_coeff_X+ opr_wid_ofs×expan_mod_X- fm_spread_X+ wfvern
(2)
In formula:
Target_width_X:X material target control width,
Aim_target_width: cold finished product target width,
Rmx_expan_coeff_X: roughing mill outlet thermal coefficient of expansion,
Expan_mod_X: roughing outlet thermal coefficient of expansion/finish rolling outlet thermal coefficient of expansion,
Opr_wid_ofs: operative employee's width difference,
Fm_spread_X: finish rolling district total the spreading of horizontal frames drafts,
Wfvern: finish rolling width is finely tuned.
Beneficial effect:
The method of the present invention can effectively solve the mixed width of plate slab that waters and control a difficult problem, reduces to mix and waters the abnormal loss of base width.
Accompanying drawing illustrates:
Fig. 1 is that the mixed of the present invention waters base difference steel grade correspondence slab scattergram.
Fig. 2 is that the mixed of the present invention waters width of plate slab control flow chart.
Fig. 3 is three set parameter integration width aim curve figures.
Fig. 4 is the target width controlling curve figure in application example.
Detailed description of the invention:
The mixed method watering width of plate slab control, the method comprises the steps:
(1) steel-making slab planning system receives the slab production schedule formulated according to user's request, needs cast A steel grade slab and B steel grade slab, arranges production, and send relevant plans data to steel-making continuous casting model system.
(2) steelmaking model system calculates A steel grade composition parameters and B steel grade composition parameters respectively, calculates to mix simultaneously and waters changeover portion AB steel grade composition parameters, after having calculated, is sent to conticaster and casts.
(3) in casting cycle, optimizing incision model calculates optimum Cutting Length, computing formula such as formula (1), is sent to flame cutting machine and cuts, and the real data of cutting is acquired by notice data collecting system simultaneously.
(1)
In formula:
: casting stream length,
: the strand number of the i-th flow ratio many production of average number,
: the casting stream length of the i-th stream,
: back-end crop length.
(4) steel-making data collecting system carries out data acquisition to the practical situation of casting and the practical situation of cutting, mainly include the mixed total length watering slab, width, the length that A steel grade accounts in slab, the length that B steel grade accounts in slab, the length that AB steel grade accounts in slab, A, B, AB mixing (after arithmetic average calculates) steel grade chemical analysis, it is sent to hot rolling data receiving system after having gathered.
(5) after hot rolling data receiving system receives data, it is sent to hot rolling width model, this model is to same slab A, tri-regions of B, AB calculate respectively, computing formula such as formula (2), calculate model respectively and control width accordingly, it is saved in respectively in Array_value [A], Array_value [B], Array_value [AB] three set parameter.
target_width_X= aim_target_width
* rmx_expan_coeff_X+ opr_wid_ofs
* expan_mod_X- fm_spread_X+
wfvern
(2)
In formula:
Target_width_X:X material target control width,
Aim_target_width: cold finished product target width,
Rmx_expan_coeff_X: roughing mill outlet thermal coefficient of expansion (relevant with X material),
Expan_mod_X: roughing outlet thermal coefficient of expansion/finish rolling outlet thermal coefficient of expansion (relevant with X material),
Opr_wid_ofs: operative employee's width difference,
Fm_spread_X: what finish rolling district horizontal frames drafts was total spreads (relevant with X material),
Wfvern: finish rolling width is finely tuned.
(6) hot rolling database storage system preserves three set calculation result data of width model.And follow the tracks of situation according to scene, real time down setting data carries out width equipment control to primary PLC system, it should be noted that AB region is transitional region, in order to ensure that one-level can control, actual at this region employing A steel grade target width, B steel grade target width, AB steel grade target width three overlaps parameter integration curve and is controlled, as shown in Figure 3.
Application example:
As a example by certain steel mill, this steel mill is according to user's contract requirement, need to produce A(AP1360C1) steel grade coil of strip 10 pieces, produce B steel grade (AP1560C1) coil of strip 10 pieces, slab target width is 1200mm, mill product width is 1180mm, cast a stove A steel grade slab and a stove B steel grade slab is needed for this, owing to two kinds of slabs production width requirements are consistent, A steel grade slab is first cast, after A steel grade slab has been cast, start B steel grade slab of casting, xenogenesis steel grade seam section AB is there is in casting cycle, a length of 9 meters of whole knot base, hot rolling mill is sent to roll after having cast.
Embodiment one:
After being cut by continuous casting optimizing incision system, in steel-making continuous casting system accurate recording knot base a length of 3 meters of A steel grade section, a length of 2 meters of AB section, a length of 4 meters of B steel grade section, and corresponding data are saved in continuous casting Database Systems, these data are with the material information of A steel grade (AP1360C1) main chemical, the material information of the material information of B steel grade (AP1560C1) main chemical and the main chemical of AB section steel grade (AP1460C1) is sent to hot rolling data receiving system, hot rolling data receiving system is saved in these data in hot rolling Database Systems respectively, and it is sent respectively to width model calculating, width model calculates target width respectively according to formula 2, and be saved in Array_valueX array.The relevant parameter of this block knot base is as shown in table 1:
The relevant parameter of table 1 knot base:
| Steel grade | Finished product target width | Roughing outlet thermal coefficient of expansion | Finish rolling drafts always spreads | Operator's intervention amount | Finish rolling amount trimmed | |
| A | AP1360C1 | 1180 | 1.01634 | -1.61 | 0 | 0 |
| AB | AP1460C1 | 1180 | 1.01603 | -2.21 | 0 | 0 |
| B | AP1560C1 | 1180 | 1.01606 | -2.33 | 0 | 0 |
According to formula, the target control width of A steel grade is target_width_A=1180 * 1.01634+ 0-(-1.61)+0=1200.89
The target control width of AB steel grade is target_width_AB=
1180 * 1.01603+ 0- (-2.21)+ 0 =1201.12
The target control width of B steel grade is target_width_B=
1180 * 1.01606+ 0- (-2.33)+ 0 =1201.28
Due to a length of 3 meters of A steel grade in slab, a length of 2 meters of AB steel grade, a length of 4 meters of B steel grade, therefore taking A 3 values of steel grade target width data, AB steel grade target width 2 value, B steel grade target width 4 value, these group data are as shown in table 2:
Table 2 target width control data table:
By one group of data above, according to value of calculation fit object width control system curve as shown in Figure 4, it is handed down to PLC and carries out field control.
It should be noted that above-described embodiment is only presently preferred embodiments of the present invention; it is not used for limiting protection scope of the present invention; equivalent done on the basis of the above or replacement belong to protection scope of the present invention, and protection scope of the present invention is as the criterion with claims.
Claims (4)
1. the mixed method watering width of plate slab control, is characterized in that: the method comprises the steps:
(1) steel-making slab planning system receives the slab production schedule formulated according to user's request, needs cast A steel grade slab and B steel grade slab, arranges production, and send relevant plans data to steel-making continuous casting model system；
(2) steelmaking model system calculates A steel grade composition parameters and B steel grade composition parameters respectively, calculates to mix simultaneously and waters changeover portion AB steel grade composition parameters, after having calculated, is sent to conticaster and casts；
(3) in casting cycle, optimizing incision model calculates optimum Cutting Length, is sent to flame cutting machine and cuts, and the real data of cutting is acquired by notice data collecting system simultaneously；
(4) steel-making data collecting system carries out data acquisition to the practical situation of casting and the practical situation of cutting, is sent to hot rolling data receiving system after having gathered；
(5) after hot rolling data receiving system receives data, it is sent to hot rolling width model, calculates model respectively and control width accordingly；
(6) hot rolling database storage system preserves three set calculation result data of width model, and follows the tracks of situation according to scene, and real time down setting data carries out width equipment control to primary PLC system.
The mixed method watering width of plate slab control the most according to claim 1, is characterized in that: the Cutting Length calculating optimum described in step (3), computing formula such as formula (1),
(1)
In formula:
: casting stream length,
: the strand number of the i-th flow ratio many production of average number,
: the casting stream length of the i-th stream,
: back-end crop length.
The mixed method watering width of plate slab control the most according to claim 1, it is characterized in that: the data acquisition described in step (4), including the mixed total length watering slab, width, the length that A steel grade accounts in slab, the length that B steel grade accounts in slab, the length that AB steel grade accounts in slab, steel grade chemical analysis after the arithmetic average calculating of A, B, AB mixing.
The most according to claim 1 mixed water the method that width of plate slab controls, it is characterized in that: described in step (5) to same slab A, tri-regions of B, AB calculate respectively, computing formula such as formula (2),
target_width_X= aim_target_width×rmx_expan_coeff_X+ opr_wid_ofs×expan_mod_X- fm_spread_X+ wfvern
(2)
In formula:
Target_width_X:X material target control width,
Aim_target_width: cold finished product target width,
Rmx_expan_coeff_X: roughing mill outlet thermal coefficient of expansion,
Expan_mod_X: roughing outlet thermal coefficient of expansion/finish rolling outlet thermal coefficient of expansion,
Opr_wid_ofs: operative employee's width difference,
Fm_spread_X: finish rolling district total the spreading of horizontal frames drafts,
Wfvern: finish rolling width is finely tuned.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068506A (en) * | 2020-07-31 | 2020-12-11 | 马鞍山钢铁股份有限公司 | Automatic, rapid and accurate continuous casting blank width forecasting method |
| CN115007828A (en) * | 2022-05-30 | 2022-09-06 | 首钢京唐钢铁联合有限责任公司 | Determination method and device for continuous casting mixed casting slab, medium and electronic equipment |
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| JP2000254703A (en) * | 1999-03-10 | 2000-09-19 | Nkk Corp | Production of hot-rolled steel sheet through plate thickness press |
| KR20020051242A (en) * | 2000-12-22 | 2002-06-28 | 이구택 | A method of manufacturing granular mold flux for stainless steel |
| CN103264149A (en) * | 2013-05-24 | 2013-08-28 | 永兴特种不锈钢股份有限公司 | Method and device using computer programs to carry out continuous casting tail blank fixed length optimizing cutting |
| CN103567409A (en) * | 2012-08-03 | 2014-02-12 | 山西太钢不锈钢股份有限公司 | Method for on-line width adjusting of continuous casting |
| CN103706775A (en) * | 2013-12-13 | 2014-04-09 | 内蒙古包钢钢联股份有限公司 | Operation method for simultaneously casting secondary and special steel type long continuous castings through continuous casting machine for wide and thick plates |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000254703A (en) * | 1999-03-10 | 2000-09-19 | Nkk Corp | Production of hot-rolled steel sheet through plate thickness press |
| KR20020051242A (en) * | 2000-12-22 | 2002-06-28 | 이구택 | A method of manufacturing granular mold flux for stainless steel |
| CN103567409A (en) * | 2012-08-03 | 2014-02-12 | 山西太钢不锈钢股份有限公司 | Method for on-line width adjusting of continuous casting |
| CN103264149A (en) * | 2013-05-24 | 2013-08-28 | 永兴特种不锈钢股份有限公司 | Method and device using computer programs to carry out continuous casting tail blank fixed length optimizing cutting |
| CN103706775A (en) * | 2013-12-13 | 2014-04-09 | 内蒙古包钢钢联股份有限公司 | Operation method for simultaneously casting secondary and special steel type long continuous castings through continuous casting machine for wide and thick plates |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068506A (en) * | 2020-07-31 | 2020-12-11 | 马鞍山钢铁股份有限公司 | Automatic, rapid and accurate continuous casting blank width forecasting method |
| CN115007828A (en) * | 2022-05-30 | 2022-09-06 | 首钢京唐钢铁联合有限责任公司 | Determination method and device for continuous casting mixed casting slab, medium and electronic equipment |
| CN115007828B (en) * | 2022-05-30 | 2024-03-19 | 首钢京唐钢铁联合有限责任公司 | Method and device for determining continuous casting mixed casting slab, medium and electronic equipment |
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