CN106735029B - A method of strand production process parameters are accurately positioned to strand and are sliced - Google Patents
A method of strand production process parameters are accurately positioned to strand and are sliced Download PDFInfo
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- CN106735029B CN106735029B CN201611198407.5A CN201611198407A CN106735029B CN 106735029 B CN106735029 B CN 106735029B CN 201611198407 A CN201611198407 A CN 201611198407A CN 106735029 B CN106735029 B CN 106735029B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
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Abstract
It is the invention belongs to continuous casting production process intelligentized control method field, more particularly to a kind of that strand production process parameters are accurately positioned to the method being sliced to strand.This method includes：(1) it is determined according to molten steel weight and strand plan scale information and often flows planned production strand block number and strand number of slices；(2) often stream generates virtual strand number and virtual strand slice number；(3) strand production process parameters and its corresponding influence area location information are determined according to production scene status of equipment；(4) it obtains in real time and often flows cast length, and to the stream cast length amendment before every stove steel often flows the first block casting base of cutting；(5) it often flows and determines that strand is sliced position according to cast length；(6) the strand production process parameters acquired in real time are navigated on every block casting base slice according to step (3) and step (5).The present invention is pin-pointed to cast length amendment and then by production process parameters on strand slice, improves the hit rate of strand chipping qualities determining defects.
Description
Technical field
It is the invention belongs to continuous casting production process intelligentized control method field, more particularly to a kind of that strand production process parameters are accurate
The method for really navigating to strand slice.
Background technology
Continuous casting production process intelligentized control method, slab quality defect analyze judgement etc. increasingly by iron and steel enterprise's weight in real time
Depending on, if it is possible to slab quality defect analysis is judged in real time, and production technology is adjusted on this basis, it can not only
Reduce the generation of slab quality defect, and can improving production efficiency, slab quality defect is divided into the degree of purity of strand, strand
Surface defect, strand internal flaw, four major class of casting blank shape defect.Current steel mill both at home and abroad is using a variety of methods to slab quality
Defect carries out analysis judgement, is such as examined online to casting blank defect using electromagnetic induction or the physical detection methods of optical detection
It surveys, since high temperature strand is influenced by iron scale, covering slag, the detection result of cc billet surface quality is unsatisfactory.With letter
The innovation and application of the series of new techniques such as breath physical system, cloud platform, industrial big data and its predictive analysis promote smelting
Golden intelligent Process is combined exploitation using the interdisciplinary technology such as mathematics, physics, control, artificial intelligence with innovative new technology
Intelligent slab quality decision-making system has become current main direction of studying.And strand production process parameters it is real-time acquisition with
Accurate positionin is the basis that slab quality analyzes judgement in real time, even more realize digitlization, networking, intelligent manufacturing basis.
It can realize that its quality in the continuous casting stage is chased after by location information after strand is processed into product, when quality problems occurs in product
It traces back, problem diagnosis and processing quality Optimal improvements.
The acquisition of strand production process parameters and the major defect of positioning include in traditional slab quality decision-making system：
(1) after traditional slab quality decision-making system acquisition strand production process parameters, strand production process parameters are mainly
It is positioned for strand, rather than is sliced for strand.
It (2), each can be in not same district with the relevant strand production process parameters of slab quality in continuous casting production process
Domain in different ways impacts slab quality, i.e., each strand production process parameters can be in an influence area
Slab quality has an impact.Traditional slab quality decision-making system can be modified this influence area, practical application show when
When slice projected length is smaller, effects of process parameters region correction result is often not accurate enough, i.e., strand production process parameters are fixed
There are deviations for position, reduce the confidence level of collected strand production process parameters, hidden danger is brought to slab quality defect analysis.
(3) in traditional strand production process parameters gatherer process, the cast length of acquisition be abnormal in production process and
It does not go to correct, causing the confidence level of the positioning of strand production process parameters reduces, and keeps slab quality judgement inaccurate.
Invention content
In view of the above technical problems, it is needle to overcome real-time strand production process parameters the object of the present invention is to provide one kind
To strand, rather than the problem of be sliced for the problem that strand, overcoming traditional strand production process parameters positioning, there are deviations
A method of strand production process parameters are accurately positioned to strand and are sliced.
To achieve the goals above, the present invention provides following technical solutions：
The present invention provides a kind of method that strand production process parameters are accurately positioned and are sliced to strand, and this method includes：
(1) planned according to ladle molten steel weight, casting fluxion, strand plan fixed length, strand fixed width, the fixed thickness of strand and slice
Length information determines and often flows planned production strand block number and the strand number of slices per block casting base；
(2) virtual strand number and virtual strand slice number are generated；
Virtual casting is generated according to the strand number of slices for often flowing planned production strand block number and every block casting base that step (1) determines
Base is numbered and virtual strand slice number；
(3) strand production process parameters and its corresponding influence area location information are determined according to production scene status of equipment；
(4) in strand production process, cast length is obtained in real time, to this before every stove steel often flows the first block casting base of cutting
Stream cast length is modified；
(5) strand slice position is positioned according to revised cast length；
(6) according to casting in strand production process parameters in step (3) and its corresponding influence area location information and step (5)
Base slice location information navigates to the strand production process parameters acquired in real time on every block casting base slice.
This method further comprises：
(7) before strand reaches cut point, strand is sliced according to the production process parameters information that strand section collecting arrives
Mass defect analyzes judgement in real time, and cutting guidance program and linking processing scheme are generated on the basis of analyzing judgement；This heat pours
It is next to pour time steel by the virtual strand number for not actually generating strand and virtual strand slice number information deletion after casting
Liquid repeats to operate since step (1) when reaching casting position.
In the step (1), the formula for often flowing planned production strand block number is as follows：
In formula, BN- often flow planned production strand block number；SW- ladle weight, unit t；SK- strand fixed width, unit mm；
SGThe fixed thickness of-strand, unit mm；SC- strand plan fixed length, unit mm；FC- numbers of caster stands；CEILING (data, 1)-is upward
It is rounded to immediate integer.
It is as follows per formula of the block casting base comprising strand number of slices in the step (1)：
In formula, SCN- strand number of slices；SC- strand plan fixed length, unit mm；SL- slice projected length, unit mm；
CEILING (data, 1)-be rounded up to as immediate integer.
In the step (4), the detailed process for obtaining cast length and amendment cast length in real time is：
Cast length calculation formula is：
CL=CL0+(T2-T1) * V formula (c)
In formula, CL- cast length；GL0Cast length value before-this calculating；T2- current time；T1- last
Calculate time when cast length；The current Casting speed of V-；
Following formula (d) is used to correct cast length value, and replacement formula (c) before often flowing the first block casting base of cutting per stove steel
The cast length of calculating, cast length correction formula：
In formula, CL- revised cast length value；VCi- processed per block casting base slice length value；VCj—
It is processed to cut remaining length value per block casting base comprising cropping part, back-end crop part, manual cutting partial-length value；
CTS- cut point position.
In the step (5), strand slice position is determined by following formula.
CIstop=CIstart-CEiFormula (f)
In formula, CIstart- the i-th piece of slice start point distance meniscus distance；CIstop- the i-th piece slice terminal away from meniscus away from
From；CL- cast length value；CEiThe slice length value of-the i-th block casting base.
In the step (6), strand production process parameters are navigated to and are met on the strand slice of the following conditions：
Meet condition one：Terminal is sliced away from meniscus distance>Strand production process parameters influence area start point distance meniscus
Distance；
Meet condition two：It is sliced start point distance meniscus distance<Strand production process parameters influence area terminal is away from meniscus
Distance.
The strand production process parameters information includes：Ladle molten steel information, pulling rate, crystallizer manifold waters, crystallizer
Manifold pressure, crystallizer main temperature, crystallizer branch water, crystallizer branch pressure, the crystallizer branch temperature difference, two cold manifold
Water, two cold manifold pressures, two cold main temperatures, two areas Leng Ge flows, two cold air total flows, two cold air gross pressures, two cold air
Width, conical degree of crystallizer, mold liquid level, mold oscillation frequency, crystallizer vibration amplitude, crystallizer in branch pressure, crystallizer
Vibration deviation proportion, mold oscillation curve number, electromagnetism head stirs electric current, electromagnetism head stirs frequency, electric current is stirred at electromagnetism end, frequency is stirred at electromagnetism end
Rate, electricity stir cistern water level, each roller electric current, each roller pressure, each roller gap, steel grade, teams and groups, strand size, equipment usage time, set
Whether protecting bad, ladle long nozzle for access times, big packet weight, big packet temperature, ladle long nozzle sealing, whether there is or not blanket gas
Body, ladle whether replace long nozzle, middle packet weight, tundish temperature, whether grade transition, submersed nozzle whether block, water
Mouthful immersion depth, submersed nozzle whether centering, covering slag title, covering slag additive amount, covering slag viscosity, the molten speed of covering slag and
Protect basicity of slag information.
Compared with prior art, the beneficial effects of the present invention are：
1, strand production process parameters acquire in real time, and information is accurate and reliable, there is higher confidence level；
2, the strand production process parameters acquired are accurately positioned onto strand slice, i.e., the casting arrived per block casting base section collecting
Base production process parameters have higher confidence level；
3, intelligence is modified cast length in production process, to ensure the accuracy of positioning；
Description of the drawings
Fig. 1, which is that the present invention is a kind of, strand production process parameters being accurately positioned the method flow diagram being sliced to strand；
Fig. 2 is virtual strand and its virtual sliced sheet information schematic diagram；
Fig. 3 is practical strand and its actual slice information schematic diagram.
Specific implementation mode
With reference to embodiment, invention is further explained.
The present invention acquires strand production process parameters in continuous casting production process and is located on strand slice comprehensively,
Intelligence is modified cast length in continuous casting production process, to ensure that the accuracy of positioning, strand production process parameters are accurate
After really navigating to strand slice, related data is transmitted to wisdom cloud platform, emulation technology and people are used in wisdom cloud platform
Work intelligent analysis method, which is combined, judges slab quality intelligent analysis, and analysis result is sent to continuous casting workshop clothes
Business device and live level system, instruct level system to operate strand.In strand following process processing procedure, per block casting
Base is processed into after product and can all inquire strand of each product in continuous casting production process by wisdom cloud platform and produced
Journey parameter information.
A kind of method being sliced the accurate positionin of strand production process parameters to strand provided by the present invention, including：
(1) planned according to ladle molten steel weight, casting fluxion, strand plan fixed length, strand fixed width, the fixed thickness of strand and slice
Length determines and often flows planned production strand block number and the strand number of slices per block casting base.
Often stream planned production strand block number determines：
Every stove steel starts before casting, it is first determined often flow virtual strand block number, i.e., when ladle reaches casting platform, according to
Ladle weight, casting fluxion, strand plan fixed length, strand fixed width and the fixed thickness of strand, determine and often flow planned production strand block number, public
Formula is as follows：
In formula,
BN- often flow planned production strand block number；
SW- ladle weight, unit t；
SK- strand fixed width, unit mm；
SGThe fixed thickness of-strand, unit mm；
SC- strand plan fixed length, unit mm；
FC- numbers of caster stands；
CEILING (data, 1)-be rounded up to as immediate integer.
Strand number of slices per block casting base determines：
It determines after often flowing planned production strand block number, the strand number of slices per block casting base is determined using following formula：
In formula,
SCN- strand number of slices；
SC- strand plan fixed length, unit mm；
SL- slice projected length, unit mm；
CEILING (data, 1)-be rounded up to as immediate integer.
(2) virtual strand number and virtual strand slice number are generated
According to the often stream planned production strand block number and strand number of slices that are determined in step (1) generate virtual strand number and
Virtual strand slice number.
As shown in Fig. 2, be the virtual strand and its virtual sliced sheet schematic diagram that certain casting machine is wherein first-class in strand production process,
Dashed boxes indicate that strand not yet generates, these information are that ladle molten steel virtually defines when reaching casting position, production process of casting
It is middle that virtual sliced sheet information is filled according to actual production situation, in addition according to practical condition pair in actual production process
Virtual strand and its virtual strand slice information amendment.
(3) strand production process parameters and its corresponding influence area location information are determined according to production scene situation
Conticaster is sequentially connected to strand cut point by numerous equipment since the starting point meniscus of casting blank solidification
Collective effect so that molten steel is finally frozen into strand, and the equipment includes that crystallizer, shaking device, two device for cooling, straightening are mechanical, electrical
Magnetic agitating device, screwdown gear and cutter device include submersed nozzle, tundish, great Bao before crystallizer in addition.
In strand production process, the position of these equipment is relatively fixed, these equipment will produce numerous strand production process parameters, and
The strand chipping qualities in influence area is corresponded to equipment to have an impact.
Continuous casting must determine each strand production process before starting according to the casting machine and status of equipment of production scene
Parameter and its corresponding influence area information；Collected each strand production process parameters can be instantaneous in continuous casting production process
The strand chipping qualities in influence area is corresponded to the parameter to have an impact.
The strand production process parameters information includes：Ladle molten steel information ([C], [Si], [Mn], [P], [S], [Mn]/
[S]、[Al]、[Ca]、[N]、[O]、[Nb]、[Ti]、[Cr]、[B]、[Ni]、[V]、[Cu]、[As]、[Zn]、[As]、[Ce]、
[Cd], [Ga], [Bi], [Sn], [H], [Sb], [Zr], [Re], [La], [Be], [Mo], [Co], [W]), pulling rate, crystallizer it is total
Pipe water, crystallizer manifold pressure, crystallizer main temperature, crystallizer branch water, crystallizer branch pressure, crystallizer branch
The temperature difference, two cold manifold waters, two cold manifold pressures, two cold main temperatures, two areas Leng Ge flows, two cold air total flows, two cold air
Gross pressure, two cold air branch pressures, width, conical degree of crystallizer, mold liquid level, mold oscillation frequency, crystallization on crystallizer
Device amplitude, mold oscillation deviation proportion, mold oscillation curve number, electromagnetism head stir electric current, electromagnetism head stirs frequency, electricity is stirred at electromagnetism end
Stream, frequency is stirred at electromagnetism end, electricity stirs cistern water level, each roller electric current, each roller pressure, each roller gap, steel grade, teams and groups, strand size, is set
Whether standby usage time, equipment access times, big packet weight, big packet temperature, ladle long nozzle sealing protect bad, the long water of ladle
Mouthful whether there is or not sealing gas, ladle whether replace long nozzle, middle packet weight, tundish temperature, whether grade transition, submersed nozzle
Whether block, mouth of a river immersion depth, submersed nozzle whether centering, covering slag title, covering slag additive amount, covering slag viscosity,
The molten speed of covering slag and protection basicity of slag information.
(4) in strand production process, cast length information is obtained in real time, and often flow the first block casting base of cutting in every stove steel
It is preceding that the stream cast length is modified
Cast length is in continuous casting production process to the basis of strand and strand orientation, the confidence level of cast length value
Most important, in strand production process, the included encoder of casting machine can obtain cast length value in real time, and cast length is sent out
Server and client are sent to for operative employee's real time inspection, the cast length that encoder obtains often has error, if missing
Difference, then error can all be occurred by entirely pouring secondary slice position, and the strand production process parameters acquired in real time cannot be corresponded to accurately
On strand slice, the confidence level of strand slice of data is reduced, so needing according to field condition to be modified cast length.
Pulling rate acquires in real time in process of production, and collected pulling rate value accuracy is higher, and the time interval of acquisition is solid
It is fixed, it can determine that cast length value, cast length calculation formula are by collected pulling rate value and pulling rate acquisition interval value：
CL=CL0+(T2-T1) * V formula (c)
In formula,
CL- cast length；
CL0Cast length value before-this calculating；
T2- current time；
T1Time when-last calculating cast length；
The current Casting speed of V-；
The cast length value that the first step obtains will appear minor deviations, these fine errors can become in continuous production process
Greatly, the present invention every stove steel often flow cutting the first block casting base before the stream cast length is modified, in casting process due to
The position of cut point be accurate, current cutting strand length value be accurate, processed strand length information be it is accurate, can
Current cast length, the start point distance meniscus distance actually cut and terminal are determined away from meniscus distance by these information
Position.
Following formula (d) is used to correct cast length value, and replacement formula (c) before often flowing the first block casting base of cutting per stove steel
The cast length of calculating, cast length correction formula：
In formula,
CL- revised cast length value；
VCi- processed per block casting base slice length value；
VCj- processed remaining length value is cut per block casting base comprising cropping part, back-end crop part, manual cutting
Partial-length value；
CTS- cut point position.
(5) strand slice position is positioned according to revised cast length
Molten steel is solidified since meniscus, i.e. strand slice constantly solidification forms actual slice, as shown in figure 3, strand is opened
For beginning coagulation forming until finally solidifying, solid line indicates the continuous coagulation forming of strand, and strand slice has not been virtual at this time, and
It is to generate practical strand.
In process of production, molten steel can constantly be frozen into strand, and cast length is increasing, per block casting base slice
Position is constantly positioned according to cast length value.
With the progress of casting production, if certain pour time in carry out casting production always, cast length increases always, then i-th
Block casting base is sliced start position and slice terminal is determined away from meniscus distance and position by lower formula.
CIstop=CIstart-CEiFormula (f)
CIstart- the i-th piece of slice start point distance meniscus distance；
CIstop- the i-th piece of slice terminal is away from meniscus distance；
CL- cast length value；
CEiThe slice length value of-the i-th block casting base.
(6) according in step (3) strand production process parameters and its corresponding influence area location information and step (5) in
Strand slice location information acquisition strand production process parameters will navigate on every block casting base slice in real time
Strand begins to solidify as type until finally solidifying, and is influenced by various strand production process parameters, strand production
Before procedure parameter obtains, the influence area information of each strand production process parameters is determined according to produced on-site situation,
Each influence area start point distance meniscus distance and influence area terminal are away from meniscus distance it has been determined that will can in real time acquire
Strand production process parameters navigate to this influence area starting point between the terminal of influence area strand slice on.
The positioning of strand production process parameters is saved on the strand slice for meeting the following conditions：
Meet condition one：Terminal is sliced away from meniscus distance (mm)>Strand production process parameters influence area start point distance is curved
Lunar surface distance (mm)；
Meet condition two：It is sliced start point distance meniscus distance (mm)<Strand production process parameters influence area terminal is away from curved
Lunar surface distance (mm).
(7) before strand reaches cut point, strand chipping qualities defect is analyzed, it, will after this heat is cast
The virtual strand number of strand and virtual strand slice number information deletion are not actually generated, and next time ladle that pours reaches casting position
Shi Chongfu steps (1) operate.
Related strand production process parameters are obtained per block casting base slice is accurate using the method for the present invention, on this basis to casting
Base production process parameters carry out abnormity diagnosis and carry out intellectual analysis judgement to chipping qualities.Process engineering before production commences
Teacher and metallurgical expert establish judgement knowledge base according to field experience, and abnormity diagnosis is exactly by collected strand production process
Parameter compared with the decision rule of definition, judge its whether exception and exception level, and according to judgement result and propose corresponding
Treatment measures.
In continuous casting production process, strand moves to always cut point from meniscus before being cut, passes through in the process
Different influence areas has been crossed, has been influenced by different production process parameters, these are accurately navigated to strand slice by system
On, it, can be on the Information base of acquisition, by using finite element analysis model, to continuous casting mistake in strand production process
Journey is directly simulated, and obtains the continuously distributed information of various variables, and the method being combined with artificial intelligence technology establishes model pair
Slab quality carries out analysis judgement and judges.Analysis judgement strand slice whether there is mass defect, if chipping qualities is abnormal,
Analysis obtain technique, equipment and critical component there are problems, and by analysis result be sent to continuous casting workshop service device and
Field Site Production System provides cutting instruction according to analysis result, and then completes strand cutting.
Post-processing
At the end of certain one heat steel produces, to some virtual strands slices without production become the slice information of practical strand into
Row is deleted, i.e., is deleted the slice that those slice terminals are 0, next stove molten steel generates on this basis when reaching casting position
New virtual sliced sheet relevant information.
Real-time acquisition and the accurate positionin of strand production process parameters are to realize intelligentized basis, in continuous casting production process
It is middle to be concentrated on all data of enterprise in wisdom cloud platform using the relevant technologies, pass through smart cloud platform courses strand production process
All parameters carry out real-time control to production process, clearly know the detailed progress of production task, sentence to slab quality
It is fixed；And perfect production tracing management system is established on this basis, ensure slab quality stability, while improving product quality
The rapidity and accuracy of retrospect.
Embodiment
This embodiment is the actual conditions that certain steel mill uses the method in the actual production process, and initial information is：
Casting machine：1# casting machines；Fluxion：6 streams；It pours secondary：6C3055；Heat (batch) number：1632001；Cut lengths：6000mm；Fixed width：
240mm；Fixed thickness 180mm；Ladle weight：161.11t；Slice length：500mm.
(1) planned according to ladle molten steel weight, casting fluxion, strand plan fixed length, strand fixed width, the fixed thickness of strand and slice
Length determines and often flows planned production strand block number and per block casting base number of slices.
It is drawn per flowmeter and generates strand block number：
It is as follows that generation strand block number formula is drawn per flowmeter：
It is calculated according to formula (a)
Strand number of slices is generated per block casting base plan：
It determines after often flowing planned production strand block number, is determined using following formula and generate strand number of slices per block casting base：
It is calculated according to formula (b)
(2) virtual strand number and virtual strand slice number are generated
It according to the often stream planned production strand block number determined in step (1) and generates strand number of slices per block casting base and generates void
Quasi- strand number and virtual strand slice number information.
As shown in table 1 below, it is currently to pour secondary, the partial information of 1 stream generation of current heat.Table 2 is involved in table 1
Row name explain.
The virtual strand number and virtual strand slice number that table 1 is initially generated
2 row name of table is explained
(3) strand production process parameters and its corresponding influence area
It is some effects area information of the present embodiment as shown in table 3 and table 4, the distinct device of different casting machines corresponds to shadow
It is different to ring area information.
3 strand production process parameters influence area information of table
Collected each strand production process parameters instantaneously can correspond to the zone of influence to the parameter in continuous casting production process
Strand chipping qualities in domain has an impact, and it is the corresponding influence area information of part strand production process parameters that it is as shown in the table.
4 strand production process parameters of table and its corresponding influence area
(4) cast length is obtained and is corrected
Cast length is the basis of strand and strand orientation in strand production process, and the confidence level of cast length value is extremely
Close important, in strand production process, the included encoder of casting machine can obtain cast length value in real time, and cast length is sent
To server and client for operative employee's real time inspection, often there is error in the cast length that encoder obtains, if there is error,
Error can all be occurred by then entirely pouring secondary slice position, and the strand production process parameters acquired in real time cannot accurately correspond to strand
On slice, the confidence level of strand slice of data is reduced, so needing according to field condition to be modified cast length.
Pulling rate acquires in real time in process of production, and collected pulling rate value accuracy is higher, and the time interval of acquisition is solid
It is fixed, it can determine that cast length value, cast length calculation formula are by collected pulling rate value and pulling rate acquisition interval value：
CL=CL0+(T2-T1) * V formula (c)
In formula,
CL- cast length；
CL0Cast length value before-this calculating；
T2- current time；
T1Time when-last calculating cast length；
The current Casting speed of V-；
The cast length value that the first step obtains will appear minor deviations, these fine errors can become in continuous production process
Greatly, the present invention every stove steel often flow cutting the first block casting base before the stream cast length is modified, in casting process due to
The position of cut point be accurate, current cutting strand length value be accurate, processed strand length information be it is accurate, can
Current cast length, the start point distance meniscus distance actually cut and terminal are determined away from meniscus distance by these information
Position.
Following formula (d) is used to correct cast length value, and replacement formula (c) before often flowing the first block casting base of cutting per stove steel
The cast length of calculating, cast length correction formula：
In formula,
CL- revised cast length value；
VCi- processed per block casting base slice length value；
VCj- processed remaining length value is cut per block casting base comprising cropping part, back-end crop part, manual cutting
Partial-length value；
CTS- cut point position, as shown in upper table 3, this cut point position is 33700mm.
(5) strand slice position is positioned according to revised cast length
Molten steel is solidified since meniscus, and the constantly solidification of strand slice forms actual slice, as shown in figure 3, solid line indicates
The continuous coagulation forming of strand.
As casting carries out, strand length constantly increases, according to cast length information, not to the position of every block casting base slice
Conclude position, ranging formula is as follows, then the slice start position of the i-th block casting base and slice terminal are apart from meniscus distance and position
It is determined by lower formula：
CIstop=CIstart-CEiFormula (f)
CIstart- the i-th piece of slice starting point is apart from meniscus distance；
CIstop- the i-th piece of slice terminal is apart from meniscus distance；
CL- cast length value；
CEiThe slice length value of-the i-th block casting base；
When being as shown in table 5 49200mm for current cast length, each strand slice start point distance meniscus distance and slice are eventually
Point is away from meniscus distance.
The corresponding cast length location information of the slice of table 5
(6) the strand production process parameters acquired in real time navigate on every block casting base slice
With the progress of casting, cast length constantly increases, then is constantly formed per block casting base and constantly moved, at this time continuous casting
Level system can collect various strand production process parameters, be produced as shown in table 6 below for a certain instantaneous collected strand
Journey parameter information：
The instantaneous collected strand production process parameters information of table 6
Strand begins to solidify as type to final solidification, is influenced by various strand production process parameters, strand produced
Before journey parameter acquiring, influence area information has also determined that, then herein all navigates to strand production process parameters information
On each block casting base slice in this influence area.As shown in upper table 4, each influence area start point distance meniscus distance and influence
Region terminal is away from meniscus distance all it has been determined that strand production process parameters can be saved in this influence area starting point to influence
On strand strand slice between the terminal of region, strand production process parameters are saved on the slice for meeting the following conditions：
Meet condition one：Terminal is sliced away from meniscus distance (mm)>Strand production process parameters influence area start point distance is curved
Lunar surface distance (mm)；
Meet condition two：It is sliced start point distance meniscus distance (mm)<Strand production process parameters influence area terminal is away from curved
Lunar surface distance (mm)；
Like this as the continuous coagulation forming of carry out molten steel of production, cast length constantly increase, strand slice is constantly transported
Dynamic, by strand production process parameters Information locating to strand slice, slice information is as shown in table 7.
Practical strand number corresponding informance in 7 production process of table
After obtaining the related strand production process parameters information of every block casting base slice using the method for the present invention, by all correlations
Information is sent to wisdom cloud platform, carries out abnormity diagnosis to strand production process parameters on this basis and is carried out to chipping qualities
Intellectual analysis judges.
After the production of certain one heat steel is completed, to some virtual strand slices without producing the slice information as practical strand
It is deleted, i.e., the slice that those slice terminals are 0 is deleted, generated on this basis newly when next stove molten steel reaches
Virtual sliced sheet relevant information.
Claims (8)
1. a kind of strand production process parameters being accurately positioned the method being sliced to strand, it is characterised in that：This method includes：
(1) according to ladle molten steel weight, casting fluxion, strand plan fixed length, strand fixed width, the fixed thickness of strand and slice projected length
Information determines and often flows planned production strand block number and the strand number of slices per block casting base；
(2) virtual strand number and virtual strand slice number are generated；
Virtual strand volume is generated according to the strand number of slices for often flowing planned production strand block number and every block casting base that step (1) determines
Number and virtual strand slice number；
(3) strand production process parameters and its corresponding influence area location information are determined according to production scene status of equipment；
(4) in strand production process, cast length is obtained in real time, and the stream is poured before every stove steel often flows the first block casting base of cutting
Casting length is modified；
(5) strand slice position is positioned according to revised cast length；
(6) it is cut according to strand in strand production process parameters in step (3) and its corresponding influence area location information and step (5)
Piece location information navigates to the strand production process parameters acquired in real time on every block casting base slice.
2. a kind of method being sliced the accurate positionin of strand production process parameters to strand according to claim 1, special
Sign is：This method further comprises：
(7) before strand reaches cut point, the production process parameters information arrived according to strand section collecting is to strand chipping qualities
Defect analyzes judgement in real time, and cutting guidance program and linking processing scheme are generated on the basis of analyzing judgement；This heat casting knot
Shu Hou, by the virtual strand number for not actually generating strand and virtual strand slice number information deletion, next time molten steel that pours arrives
It repeats to operate since step (1) when up to casting position.
3. a kind of method being sliced the accurate positionin of strand production process parameters to strand according to claim 1 or 2,
It is characterized in that：
In the step (1), the formula for often flowing planned production strand block number is as follows：
In formula, BN- often flow planned production strand block number；SW- ladle weight, unit t；SK- strand fixed width, unit mm；sG- casting
The fixed thickness of base, unit mm；sC- strand plan fixed length, unit mm；FC- numbers of caster stands；CEILING (data, 1)-be rounded up to for
Immediate integer.
4. a kind of method being sliced the accurate positionin of strand production process parameters to strand according to claim 1 or 2,
It is characterized in that：
It is as follows per formula of the block casting base comprising strand number of slices in the step (1)：
In formula, SCN- strand number of slices；SC- strand plan fixed length, unit mm；SL- slice projected length, unit mm；
CEILING (data, 1)-be rounded up to as immediate integer.
5. a kind of method being sliced the accurate positionin of strand production process parameters to strand according to claim 1 or 2,
It is characterized in that：
In the step (4), the detailed process for obtaining cast length and amendment cast length in real time is：
Cast length calculation formula is：
CL=CL0+(T2-T1) * V formula (c)
In formula, CL- cast length；CL0Cast length value before-this calculating；T2- current time；T1- the last time calculates
Time when cast length；The current Casting speed of V-；
Following formula (d) is used to correct cast length value before often flowing the first block casting base of cutting per stove steel, and replacement formula (c) calculates
Cast length, cast length correction formula：
In formula, CL- revised cast length value；VCi- processed per block casting base slice length value；VCj-
It is processed to cut remaining length value per block casting base comprising cropping part, back-end crop part, manual cutting partial-length value；CTS- cut
Cutpoint position.
6. a kind of method being sliced the accurate positionin of strand production process parameters to strand according to claim 1 or 2,
It is characterized in that：
In the step (5), strand slice position is determined by following formula；
CIstop=CIstart-CEiFormula (f)
In formula, CIstart- the i-th piece of slice start point distance meniscus distance；CIstop- the i-th piece of slice terminal is away from meniscus distance；
CL- cast length value；CEiThe slice length value of-the i-th block casting base.
7. a kind of method being sliced the accurate positionin of strand production process parameters to strand according to claim 1 or 2,
It is characterized in that：
In the step (6), strand production process parameters are navigated to and are met on the strand slice of the following conditions：
Meet condition one：Terminal is sliced away from meniscus distance>Strand production process parameters influence area start point distance meniscus distance；
Meet condition two：It is sliced start point distance meniscus distance<Strand production process parameters influence area terminal is away from meniscus distance.
8. a kind of method being sliced the accurate positionin of strand production process parameters to strand according to claim 1 or 2,
It is characterized in that：
The strand production process parameters information includes：Ladle molten steel information, pulling rate, crystallizer manifold waters, crystallizer manifold
Pressure, crystallizer main temperature, crystallizer branch water, crystallizer branch pressure, the crystallizer branch temperature difference, two cold manifold water
Amount, two cold manifold pressures, two cold main temperatures, two areas Leng Ge flows, two cold air total flows, two cold air gross pressures, two cold air branch
Width, conical degree of crystallizer, mold liquid level, mold oscillation frequency, crystallizer vibration amplitude, crystallizer shake in road pressure, crystallizer
Dynamic deviation proportion, mold oscillation curve number, electromagnetism head stirs electric current, electromagnetism head stirs frequency, electric current is stirred at electromagnetism end, frequency is stirred at electromagnetism end
Rate, electricity stir cistern water level, each roller electric current, each roller pressure, each roller gap, steel grade, teams and groups, strand size, equipment usage time, set
Whether protecting bad, ladle long nozzle for access times, big packet weight, big packet temperature, ladle long nozzle sealing, whether there is or not blanket gas
Body, ladle whether replace long nozzle, middle packet weight, tundish temperature, whether grade transition, submersed nozzle whether block, water
Mouthful immersion depth, submersed nozzle whether centering, covering slag title, covering slag additive amount, covering slag viscosity, the molten speed of covering slag and
Protect basicity of slag information.
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| CN109128073B (en) * | 2017-06-16 | 2020-07-28 | 宝山钢铁股份有限公司 | Continuous casting blank cutting control system and control method thereof |
| CN110756758B (en) * | 2019-10-10 | 2021-06-04 | 中冶南方连铸技术工程有限责任公司 | Control method and device for minimizing residence time of casting blank in casting flow |
| CN110976803A (en) * | 2019-12-19 | 2020-04-10 | 攀枝花钢城集团瑞钢工业有限公司 | Continuous casting billet sizing control method |
| CN112024840B (en) * | 2020-08-12 | 2022-04-12 | 北京首钢自动化信息技术有限公司 | Casting blank production control method and device |
| CN114273631B (en) * | 2021-12-20 | 2023-05-12 | 河钢股份有限公司 | Method for collecting and counting data of mixed casting area of continuous casting machine |
| CN115041653B (en) * | 2022-06-10 | 2024-01-26 | 湖南华菱涟源钢铁有限公司 | Continuous casting performance generation method, device, equipment and computer storage medium |
| CN116611029B (en) * | 2023-07-19 | 2023-09-22 | 北京科技大学 | Method and device for generating parameter data set in continuous casting production process of whole casting time |
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