CN106269899B - The mixed method for pouring width of plate slab control - Google Patents
The mixed method for pouring width of plate slab control Download PDFInfo
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- CN106269899B CN106269899B CN201510273376.4A CN201510273376A CN106269899B CN 106269899 B CN106269899 B CN 106269899B CN 201510273376 A CN201510273376 A CN 201510273376A CN 106269899 B CN106269899 B CN 106269899B
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Abstract
The present invention provides a kind of mixed method for pouring width of plate slab control.This method comprises: (1) steel-making slab planning system receives slab production plan, and it is sent to steel-making continuous casting model system；(2) it after steelmaking model system calculates separately steel grade composition parameters, is sent to conticaster and casts；(3) optimal Cutting Length is calculated in casting process, flame cutting machine is sent to and is cut, while notification data acquisition system is acquired the real data of cutting；(4) steel-making data collection system is sent to hot rolling data receiving system after carrying out data acquisition to the actual conditions of casting and cutting；(5) after hot rolling data receiving system receives data, it is sent to hot rolling width model, model is calculated separately out and controls width accordingly；(6) hot rolling database storage system saves three sets of calculation result datas of width model, and real time down setting data carry out the control of width equipment to primary PLC system.The present invention can effectively reduce the mixed base width that pours and lose extremely.
Description
Technical field:
The present invention relates to a kind of mixed methods for pouring width of plate slab control, belong to iron and steel metallurgy production control technology field.
Background technique:
It is mixed both at home and abroad at present to pour the slab that slab is mostly determined as a kind of specially treated, in subsequent production greatly all in accordance with
A kind of material or comprehensive judgement are that another material is produced, material that under normal circumstances can be high according to steel grade strength grade
Matter is to carry out organization of production, and corresponding to its width and controlling is also to be controlled according to a kind of material steel grade, this results in actual production
In the process, when production is rolled down to changeover portion and when another material steel grade, causes width control difficult, width control exist compared with
Big fluctuation, seriously affects product quality.
Summary of the invention:
The object of the present invention is to provide a kind of mixed method for pouring width of plate slab control, it can effectively solve to mix and pour width of plate slab control
Problem processed reduces the mixed base width that pours and loses extremely.
Above-mentioned purpose is achieved through the following technical solutions:
The mixed method for pouring width of plate slab control, this method comprises the following steps:
(1) steel-making slab planning system receives the slab production plan formulated according to user demand, and need to cast A steel grade
Slab and B steel grade slab, arrange production, and send relevant plans data and give steel-making continuous casting model system；
(2) steelmaking model system calculates separately A steel grade composition parameters and B steel grade composition parameters, while calculating to mix and pouring transition
Section AB steel grade composition parameters, after the completion of calculating, are sent to conticaster and cast；
(3) optimizing incision model calculates optimal Cutting Length in casting process, is sent to flame cutting machine and is cut
It cuts, while notification data acquisition system is acquired the real data of cutting；
(4) steel-making data collection system carries out data acquisition to the actual conditions of casting and the actual conditions of cutting, adopts
Hot rolling data receiving system is sent to after the completion of collection；
(5) after hot rolling data receiving system receives data, it is sent to hot rolling width model, it is corresponding to calculate separately out model
Control width；
(6) hot rolling database storage system saves three sets of calculation result datas of width model, and is tracked according to scene
Situation, real time down set data and carry out the control of width equipment to primary PLC system.
The mixed method for pouring width of plate slab control, calculates optimal Cutting Length described in step (3), calculate public
Formula such as formula (1),
(1)
In formula:
: casting stream length,
: the slab number that the i-th stream produces more than average number,
: the casting stream length of the i-th stream,
: back-end crop length.
The mixed method for pouring width of plate slab control, the acquisition of data described in step (4) pour the total of slab including mixed
Length, 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, steel grade chemical analysis after the arithmetic average of B, AB mixing calculates.
The mixed method for pouring width of plate slab control, to tri- areas same slab A, B, AB described in step (5)
Domain calculates separately, calculation 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 exports thermal expansion coefficient,
Expan_mod_X: roughing exports thermal expansion coefficient/finish rolling and exports thermal expansion coefficient,
Opr_wid_ofs: operative employee's width difference,
Fm_spread_X: finish rolling area horizontal frames drafts is total to spread,
Wfvern: finish rolling width fine tuning.
The utility model has the advantages that
Method of the invention can effectively solve the mixed width of plate slab that pours and control problem, reduces the mixed base width that pours and loses extremely.
Detailed description of the invention:
Fig. 1 is that the mixed base difference steel grade that pours of the invention corresponds to slab distribution map.
Fig. 2 is of the invention mixed to pour width of plate slab control flow chart.
Fig. 3 is three sets of parameter integration width aim curve figures.
Fig. 4 is the target width controlling curve figure in application example.
Specific embodiment:
The mixed method for pouring width of plate slab control, this method comprises the following steps:
(1) steel-making slab planning system receives the slab production plan formulated according to user demand, and need to cast A steel grade
Slab and B steel grade slab, arrange production, and send relevant plans data and give steel-making continuous casting model system.
(2) steelmaking model system calculates separately A steel grade composition parameters and B steel grade composition parameters, while calculating to mix and pouring transition
Section AB steel grade composition parameters, after the completion of calculating, are sent to conticaster and cast.
(3) optimizing incision model calculates optimal Cutting Length in casting process, and calculation formula such as formula (1) is sent to
Flame cutting machine is cut, while notification data acquisition system is acquired the real data of cutting.
(1)
In formula:
: casting stream length,
: the slab number that the i-th stream produces more than average number,
: the casting stream length of the i-th stream,
: back-end crop length.
(4) steel-making data collection system carries out data acquisition to the actual conditions of casting and the actual conditions of cutting, main
It to include the mixed total length for pouring slab, width, the length that A steel grade accounts in slab, the length that B steel grade accounts in slab, AB steel
The length that kind accounts in slab, A, B, AB mixing (after arithmetic average calculates) steel grade chemical analysis, is sent to heat after the completion of acquisition
Roll data receiving system.
(5) after hot rolling data receiving system receives data, it is sent to hot rolling width model, the model is to same slab
Tri- regions A, B, AB calculate separately, and calculation formula such as formula (2) calculates separately out model and controls width accordingly, saves respectively
At Array_value [A], Array_value [B], in three sets of parameters of Array_value [AB].
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 exports thermal expansion coefficient (related with X material),
Expan_mod_X: roughing exports thermal expansion coefficient/finish rolling outlet thermal expansion coefficient (related with X material),
Opr_wid_ofs: operative employee's width difference,
Fm_spread_X: finish rolling area horizontal frames drafts it is total spread (related with X material),
Wfvern: finish rolling width fine tuning.
(6) hot rolling database storage system saves three sets of calculation result datas of width model.And it is tracked according to scene
Situation, real time down sets data and carries out the control of width equipment to primary PLC system, it should be noted that the region AB is transition region
Domain, it is practical to use A steel grade target width, B steel grade target width, AB steel grade mesh in the region in order to guarantee that level-one can control
Mark three sets of parameter integration curves of width are controlled, as shown in Figure 3.
Application example:
By taking certain steel mill as an example, which needs to produce A(AP1360C1 according to user's contract requirement) 10 pieces of steel grade coil of strip,
It produces 10 pieces of coil of strip of B steel grade (AP1560C1), slab target width is 1200mm, and mill product width is 1180mm, is
This need to cast a furnace A steel grade slab and a furnace B steel grade slab, since two kinds of slab production width requirements are consistent, A steel grade slab
It first casts, after the completion of the casting of A steel grade slab, starts B steel grade slab of casting, there are xenogenesis steel grade seam sections in casting process
AB, entire knot base length are 9 meters, send hot rolling mill to roll after the completion of casting.
Embodiment one:
After being cut by continuous casting optimizing incision system, the length of A steel grade section in steel-making continuous casting system accurate recording knot base
It is 3 meters, AB sections of length is 2 meters, and the length of B steel grade section is 4 meters, and corresponding data are saved in continuous casting Database Systems
In, material information of the data with A steel grade (AP1360C1) main chemical, B steel grade (AP1560C1) main chemical
Material information and the material informations of main chemical of AB sections of steel grades (AP1460C1) be sent to hot rolling data receiver system
System, hot rolling data receiving system is respectively stored in the data in hot rolling Database Systems, and is sent respectively to width model meter
It calculates, width model calculates separately out target width according to formula 2, and is saved in Array_valueX array.This block knot base
Relevant parameter it is as shown in table 1:
The relevant parameter of 1 knot base of table:
| Steel grade | Finished product target width | Roughing exports thermal expansion coefficient | 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 be the * 1.01634+ of target_width_A=1180 0- (-
1.61)+ 0 =1200.89
The target control width of AB steel grade is the * 1.01603+ 0- of target_width_AB=1180 (- 2.21)+0
=1201.12
The target control width of B steel grade be the * 1.01606+ 0- of target_width_B=1180 (- 2.33)+0=
1201.28
Since A steel grade length is 3 meters in slab, AB steel grade length is 2 meters, and B steel grade length is 4 meters, therefore takes A steel grade target
Width data 3 values, AB steel grade target width 2 values, B steel grade target width 4 values, this group of data are as shown in table 2:
2 target width control data table of table:
By one group of data above, according to calculated value fit object width controlling curve as shown in figure 4, being handed down to PLC
Carry out field control.
It should be noted that above-described embodiment is only presently preferred embodiments of the present invention, there is no for the purpose of limiting the invention
Protection scope, made equivalent substitution or substitution all belongs to the scope of protection of the present invention on the basis of the above, of the invention
Protection scope is subject to claims.
Claims (4)
1. a kind of mixed method for pouring width of plate slab control, it is characterized in that: this method comprises the following steps:
(1) steel-making slab planning system receives the slab production plan formulated according to user demand, and need to cast A steel grade slab
It with B steel grade slab, arranges production, and sends relevant plans data and give steel-making continuous casting model system；
(2) steel-making continuous casting model system calculates separately A steel grade composition parameters and B steel grade composition parameters, while calculating to mix and pouring transition
Section AB steel grade composition parameters, after the completion of calculating, are sent to conticaster and cast；
(3) optimizing incision model calculates optimal Cutting Length in casting process, is sent to flame cutting machine and is cut, together
When notification data acquisition system the real data of cutting is acquired；
(4) steel-making data collection system carries out data acquisition to the actual conditions of casting and the actual conditions of cutting, has acquired
Hot rolling data receiving system is sent to after；
(5) after hot rolling data receiving system receives data, be sent to hot rolling width model, the model to same slab A, B,
Tri- regions AB calculate separately, and calculate separately out model and control width accordingly；
(6) hot rolling database storage system saves three sets of calculation result datas of width model, and tracks situation according to scene,
Real time down sets data and carries out the control of width equipment to primary PLC system.
2. the mixed method for pouring width of plate slab control according to claim 1, it is characterized in that: calculating described in step (3)
Optimal Cutting Length, calculation formula such as formula (1),
LI-th stream=(NTotal number/S+EI-th stream) * cut lengths-LCasting stream i+LBOTTOM (1)
In formula:
NTotal number: plan total number of slab；
S: fluxion can be used；
LI-th stream: casting stream length,
EI-th stream: the slab number that the i-th stream produces more than average number,
LCasting stream i: the casting stream length of the i-th stream,
LBOTTOM: back-end crop length.
3. the mixed method for pouring width of plate slab control according to claim 1, it is characterized in that: data described in step (4)
Acquisition, including the mixed total length for pouring slab, width, the length that A steel grade accounts in slab, the length that B steel grade accounts in slab, AB
The length that steel grade accounts in slab, steel grade chemical analysis after the arithmetic average of A, B, AB mixing calculates.
4. the mixed method for pouring width of plate slab control according to claim 1, it is characterized in that: to same described in step (5)
Tri- regions one piece of slab A, B, AB calculate separately, calculation 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 exports thermal expansion coefficient,
Expan_mod_X: roughing exports thermal expansion coefficient/finish rolling and exports thermal expansion coefficient,
Opr_wid_ofs: operative employee's width difference,
Fm_spread_X: finish rolling area horizontal frames drafts is total to spread,
Wfvern: finish rolling width fine tuning.
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| 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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