CN105710323A - Cut-to-length measuring method and system for slabs - Google Patents
Cut-to-length measuring method and system for slabs Download PDFInfo
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- CN105710323A CN105710323A CN201610087984.0A CN201610087984A CN105710323A CN 105710323 A CN105710323 A CN 105710323A CN 201610087984 A CN201610087984 A CN 201610087984A CN 105710323 A CN105710323 A CN 105710323A
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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
- B22D11/163—Controlling or regulating processes or operations for cutting cast stock
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Abstract
The embodiment of the invention discloses a cut-to-length measuring method and system for slabs. The method comprises the steps of presetting the blank casting time unit, obtaining the number of needed blank casting time units after blank casting is completed, obtaining the instantaneous blank casting speed at the beginning of each blank casting time unit, calculating the blank casting length of each blank casting time unit according to the instantaneous blank casting speed at the beginning of each blank casting time unit and obtaining the length of the slabs by adding the blank casting length of each blank casting time unit. According to the cut-to-length measuring method and system, the blank casting length of each blank casting time unit is obtained by dividing multiple blank casting time units, the total blank casting length is obtained finally, cut-to-length measurement of the cast slabs is completed, the cut-to-length detection stability of the slabs is improved, and the yield of the slabs is improved comprehensively.
Description
Technical field
The present invention relates to automatic control technology field, particularly relate to a kind of slab scale and survey long method and system.
Background technology
Sheet billet continuous casting is the smelting technique by slab caster continuous casting plate blank, slab casting to be annealed through supercooling after completing, often slab annealed after can produce not good template, in order to reach following process requirement can be stretched by withdrawal straightening machine, be then fed into slab cutting area.Along with STEELMAKING PRODUCTION rhythm is constantly accelerated, client is also more and more higher to the requirement of slab quality.Therefore before slab cuts, it is required for that slab is carried out scale surveys long, then survey the cutting of progress row according to scale, obtain the sub-base that client needs.
Present most domestic slab scale surveys long commonly used traditional measurement roller scale system, as shown in Figure 1, measure roller scale system to include measuring roller 1, pneumatic cylinder 2 and encoder 3, pneumatic cylinder 2 promotes measurement roller 1 to be pressed against the side of slab, slab drives measurement roller to rotate in withdrawal straightening machine horizontal segment running, with the number of turns measuring the encoder 3 computation and measurement roller rotation that roller is connected to obtain the length of slab.
Measurement roller scale system is adopted to there is following Railway Project: the speed reducing ratio 1, measuring roller is little；2, measure roller in rotary course, there will be abrasion, situation about skidding；3, measuring roller and lean against on slab by cylinder pressure by measurement roll-in, gas pressure fluctuation is big, it sometimes appear that measure the faults such as roller not rotation, causes that encoder cannot normally count the length following the tracks of scale.Above problem all can cause that affecting slab scale surveys long stability, has had a strong impact on the precision of slab cutting.
Summary of the invention
The embodiment of the present invention provides a kind of slab scale and surveys long method and system, to solve the problem that scale of the prior art surveys long instability.
In order to solve above-mentioned technical problem, the embodiment of the invention discloses following technical scheme:
A kind of slab scale surveys rectangular method, and described method includes:
Preset the unit strand time；
Obtain strand and terminate required unit strand time number；
Obtain instantaneous strand speed when starting of each unit strand time；
The strand length of instantaneous strand speed calculation each unit strand time when starting according to described each unit strand time, adds the strand length of described each unit strand time and obtains slab length.
Preferably, described acquisition strand terminates required unit strand time number, including:
When each unit strand time starts, the unit strand time number needed for strand is added up；
When terminating current one strand time strand, it is judged that whether strand terminates；
If strand does not terminate, continue the strand of next unit strand time, and unit strand time number is added up；Or,
If strand terminates, stop strand, preserve unit strand time number.
Preferably, described judge whether strand terminates, including:
Detect the afterbody base head position of slab in real time；
If the current one strand time terminates, detect that described afterbody base head position and current end position are inconsistent, then strand does not terminate, and continues strand operation；Or,
If the current one strand time terminates, detect that described afterbody base head position is consistent with current end position, then strand terminates.
Preferably, instantaneous strand speed when described acquisition each unit strand time starts includes:
Obtain motor for withdrawal & straightening machine instant rotation speed and motor for withdrawal & straightening machine running frequency when starting of each unit strand time；
Instantaneous strand speed is obtained according to described instant rotation speed and described running frequency.
Preferably, described acquisition motor for withdrawal & straightening machine instant rotation speed includes:
Obtain the rated speed of motor for withdrawal & straightening machine and the speed reducing ratio of motor；
Obtain withdrawal straightening machine pulling-straightening roller diameter；
Described motor for withdrawal & straightening machine instant rotation speed is obtained according to described rated speed, described speed reducing ratio and described pulling-straightening roller diameter.
A kind of slab scale length measurement system, described system includes:
Presetting module, is used for presetting the unit strand time；
First acquisition module, terminates required unit strand time number for obtaining strand；
Second acquisition module, for obtain each unit strand time start time instantaneous strand speed；
Processing module, the strand length of instantaneous strand speed calculation each unit strand time when each unit strand time for obtaining according to described acquisition module starts, the strand length of each unit strand time is added and obtains slab length.
Preferably, described first acquisition module includes:
Counting unit, for when each unit strand time starts, adding up to the unit strand time number needed for strand；
Judging unit, for judging whether strand terminates when terminating current one strand time strand.
Preferably, described judging unit includes:
Detection sub-unit, for detecting the afterbody base head position of slab in real time；
Judgment sub-unit, for judging in the end current one strand time, the described afterbody base head position consistency whether current end position detects with described detection sub-unit.
Preferably, described second acquisition module includes:
Acquiring unit, is used for obtaining motor for withdrawal & straightening machine instant rotation speed and motor for withdrawal & straightening machine running frequency；
Processing unit, for processing described instant rotation speed and the described running frequency that described acquiring unit obtains, it is thus achieved that instantaneous strand speed.
Preferably, described acquiring unit includes:
Obtain subelement, for obtaining the rated speed of motor for withdrawal & straightening machine, the speed reducing ratio of motor and withdrawal straightening machine pulling-straightening roller diameter；
Processing subelement, the described rated speed, described speed reducing ratio and the described pulling-straightening roller diameter that obtain for processing described acquisition subelement obtain described motor for withdrawal & straightening machine instant rotation speed.
From above technical scheme, a kind of slab scale that the embodiment of the present invention provides surveys long method and system, including: preset the unit strand time, obtain strand and terminate required unit strand time number, obtain instantaneous strand speed when starting of each unit strand time, the strand length of instantaneous strand speed calculation each unit strand time when starting according to described each unit strand time, adds the strand length of described each unit strand time and obtains slab length.By dividing multiple unit strand time, obtain the strand length of each unit strand time respectively, finally obtain total strand length, complete the scale to the slab cast out and survey long, improve the stability of slab scalling-off detecting, improve slab lumber recovery comprehensively.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, for those of ordinary skills, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation that traditional measurement roller measures scale system；
Fig. 2 surveys the schematic flow sheet of rectangular method for a kind of slab scale that the embodiment of the present invention provides；
A kind of strand that obtains that Fig. 3 provides for the embodiment of the present invention terminates the method flow schematic diagram of unit strand time number；
The schematic flow sheet of a kind of method judging strand state that Fig. 4 provides for the embodiment of the present invention；
The structural representation of a kind of slab scale length measurement system that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical scheme in the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, all should belong to the scope of protection of the invention.
Referring to Fig. 2, for the schematic flow sheet of a kind of slab scale rectangular method of survey that the embodiment of the present invention provides, described method includes:
S101, preset the unit strand time, because when slab casting, it is likely to the slab that casting is a bit of, the pulling rate of strand neither be uniform, therefore when the default unit strand time, taking smaller value as much as possible, so the strand speed within each unit strand time levels off to instantaneous strand speed when starting of the described unit strand time.Preferably, the unit strand time can set that as 100ms.
S102, obtains strand and terminates required unit strand time number；
In strand process, an enumerator is set, when each unit strand time starts, the unit strand time number needed for strand is added up；Such as, starting strand hour counter first unit strand time and be counted as 1, after terminating the N-1 unit strand time strand operation, rolling counters forward is N-1；If now strand does not terminate, enter again the strand operation of n-th unit strand time, enumerator can when the n-th unit strand time starts, the number of unit strand time is added 1 automatically, because being N-1 at previous moment counting, so when the n-th unit strand time starts again, rolling counters forward is N.
A kind of strand that obtains for embodiment of the present invention offer shown in Figure 3 terminates the method flow schematic diagram of unit strand time number；
S201, the operation of current one strand time strand terminates；If with the unit strand time for the 100ms of the hypothesis in S101, it is judged that the operation end of current one strand time strand is and started 100ms from the operation of current one strand time strand, it is determined that the operation of current one strand time strand terminates.
S202, it is judged that whether strand terminates；
Schematic flow sheet referring to Fig. 4 a kind of method judging strand state provided for the embodiment of the present invention；
Judge strand whether terminate particularly as follows:
S301, detects the afterbody base head position of slab in real time；Concrete in strand process, it is possible to multiple video camera to be set and carries out image acquisition, the image collected is analyzed, obtain slab afterbody base head the position of real-time tracking detection afterbody base head.
S302, it is judged that whether described afterbody base head position is consistent with current end position；After the operation of current one strand time strand terminates, video camera obtains whether whether the position currently terminated overlap with the image of described afterbody base head, judges that whether described afterbody base head position is consistent with current end position.
S303, if described afterbody base head position is consistent with current end position, strand terminates；If the afterbody base head that video camera obtains with current end position in the picture time overlap, then judge that described afterbody base head position is consistent with current end position, send control instruction, terminating current strand and operate, strand terminates.
S304, if described afterbody base head position is inconsistent with current end position, strand does not terminate；If the afterbody base head that video camera obtains is misaligned in the picture with current end position, then judging that described afterbody base head position and current end position are inconsistent, continue current strand operation, strand does not terminate.
S203, if strand terminates, stops strand operation, preserves unit strand time number；If after such as completing the strand operation of the N-1 unit strand time, strand terminates, then without continuing strand, therefore record strand terminates the required unit strand time is N-1, and preserves, for subsequent calculations slab length.
S204, if strand is not for terminate, continues the strand of next unit strand time, and unit strand time number is added up；If it is same after the strand operation completing the N-1 unit strand time, strand does not terminate, then may proceed to enter the strand operation of n-th unit strand time, meanwhile the number of unit strand time can add up on the basis of previous unit strand time counting, and number is become N from N-1.
S103, obtains instantaneous strand speed when starting of each unit strand time；
First motor for withdrawal & straightening machine instant rotation speed and motor for withdrawal & straightening machine running frequency when starting of each unit strand time is obtained；Instantaneous strand speed is obtained according to described instant rotation speed and described running frequency.
If the described motor for withdrawal & straightening machine instant rotation speed obtained is vx, the motor running frequency of withdrawal straightening machine is F, then described instant rotation speed is Vn=vx/50*F, assume that strand terminates to need through N number of unit strand time, therefore the instant rotation speed of each unit strand time is calculated respectively, wherein the motor running frequency F of withdrawal straightening machine is fixing, but the motor transient speed of withdrawal straightening machine may change, and therefore gathers the withdrawal straightening machine instant rotation speed that each unit interval starts respectively.
The instant rotation speed of first unit strand time: V1=v1/50*F；
The instant rotation speed of second unit strand time: V2=v2/50*F；
The instant rotation speed of the 3rd unit strand time: V3=v3/50*F；
…………………………………………
The instant rotation speed of the N-1 unit strand time: Vn-1=vn-1/50*F；
The instant rotation speed of n-th unit strand time: Vn=vn/50*F.
Preferably, described acquisition motor for withdrawal & straightening machine instant rotation speed includes: obtain the rated speed of motor for withdrawal & straightening machine and the speed reducing ratio of motor, obtain withdrawal straightening machine pulling-straightening roller diameter, obtain described motor for withdrawal & straightening machine instant rotation speed according to described rated speed, described speed reducing ratio and described pulling-straightening roller diameter；
If the rated speed of motor is M, the speed reducing ratio of motor is S, and the diameter of withdrawal straightening machine pulling-straightening roller is D, then motor for withdrawal & straightening machine instant rotation speed v x=1/S*M* π * D/1000.When wherein each unit strand time starts, the speed reducing ratio S of described motor can affect described motor for withdrawal & straightening machine instant rotation speed v x, thus causing that withdrawal straightening machine instant rotation speed when commensurate's strand time does not start has certain error.
S104, the strand length of instantaneous strand speed calculation each unit strand time when starting according to described each unit strand time, the strand length of described each unit strand time is added and obtains slab length.
Also assume that strand terminates to need through N number of unit strand time, then:
The strand length of first unit strand time: S1=100/60000*V1；
The strand length of second unit strand time: S2=100/60000*V2；
The strand length of the 3rd unit strand time: S3=100/60000*V2；
…………………………………………
The strand length of the N-1 unit strand time: Sn-1=100/60000*Vn-1；
The strand length of n-th unit strand time: Sn=100/60000*Vn,
Strand terminates N number of unit strand time strand length (cut lengths) L=S1+S2+S3+ ...+Sn-1+Sn.
As seen from the above-described embodiment, a kind of slab scale that the present embodiment provides is surveyed rectangular method and is included: preset the unit strand time, obtain strand and terminate required unit strand time number, obtain instantaneous strand speed when starting of each unit strand time, the strand length of instantaneous strand speed calculation each unit strand time when starting according to described each unit strand time, adds the strand length of described each unit strand time and obtains slab length.By dividing multiple unit strand time, obtain the strand length of each unit strand time respectively, finally obtain total strand length, complete the scale to the slab cast out and survey long, improve the stability of slab scalling-off detecting, improve slab lumber recovery comprehensively.
Survey long embodiment of the method with a kind of slab scale provided by the invention corresponding, present invention also offers a kind of slab scale length measurement system.
Referring to Fig. 5, for the structural representation of a kind of slab scale length measurement system that the embodiment of the present invention provides, described system includes:
Presetting module 401, is used for presetting the unit strand time；
First acquisition module 402, terminates required unit strand time number for obtaining strand；
Described first acquisition module 402 includes counting unit and judging unit.Described counting unit, for when each unit strand time starts, adding up to the unit strand time number needed for strand；Described judging unit, for judging whether strand terminates when terminating current one strand time strand.
Described judging unit includes again detection sub-unit and judgment sub-unit: described detection sub-unit, for detecting the afterbody base head position of slab in real time；Described judgment sub-unit, for judging in the end current one strand time, the described afterbody base head position consistency whether current end position detects with described detection sub-unit.
Second acquisition module 403, for obtain each unit strand time start time instantaneous strand speed；
Described second acquisition module 403 includes: acquiring unit and processing unit.Described acquiring unit, is used for obtaining motor for withdrawal & straightening machine instant rotation speed and motor for withdrawal & straightening machine running frequency；Described processing unit, for processing described instant rotation speed and the described running frequency that described acquiring unit obtains, it is thus achieved that instantaneous strand speed.
Described acquiring unit includes again obtaining subelement and processing subelement: described acquisition subelement, for obtaining the rated speed of motor for withdrawal & straightening machine, the speed reducing ratio of motor and withdrawal straightening machine pulling-straightening roller diameter；Described process subelement, the described rated speed, described speed reducing ratio and the described pulling-straightening roller diameter that obtain for processing described acquisition subelement obtain described motor for withdrawal & straightening machine instant rotation speed.
Processing module 404, the strand length of instantaneous strand speed calculation each unit strand time when each unit strand time for obtaining according to described acquisition module starts, the strand length of each unit strand time is added and obtains slab length.
As seen from the above-described embodiment, a kind of slab scale that the present embodiment provides surveys long method system, including presetting module 401, first acquisition module 402, second acquisition module 403 and processing module 404, described presetting module 401 presets the unit strand time, described first acquisition module 402 obtains strand and terminates required unit strand time number, described second acquisition module 403 obtains instantaneous strand speed when starting of each unit strand time, the strand length of instantaneous strand speed calculation each unit strand time when described processing module 404 started according to described each unit strand time, the strand length of described each unit strand time is added and obtains slab length.Described system improves the stability of slab scalling-off detecting, improves slab lumber recovery.
Each embodiment in this specification all adopts the mode gone forward one by one to describe, between each embodiment identical similar part mutually referring to, what each embodiment stressed is the difference with other embodiments.Especially for system or system embodiment, owing to it is substantially similar to embodiment of the method, so describing fairly simple, relevant part illustrates referring to the part of embodiment of the method.System described above and system embodiment are merely schematic, the wherein said unit illustrated as separating component can be or may not be physically separate, the parts shown as unit can be or may not be physical location, namely may be located at a place, or can also be distributed on multiple NE.Some or all of module therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
It should be noted that, in this article, the such as relational terms of " first " and " second " or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
The above is only the specific embodiment of the present invention, makes to skilled artisans appreciate that or realize the present invention.The multiple amendment of these embodiments be will be apparent to one skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a slab scale surveys rectangular method, it is characterised in that described method includes:
Preset the unit strand time；
Obtain strand and terminate required unit strand time number；
Obtain instantaneous strand speed when starting of each unit strand time；
The strand length of instantaneous strand speed calculation each unit strand time when starting according to described each unit strand time, adds the strand length of described each unit strand time and obtains slab length.
2. slab scale according to claim 1 surveys rectangular method, it is characterised in that described acquisition strand terminates required unit strand time number, including:
When each unit strand time starts, the unit strand time number needed for strand is added up；
When terminating current one strand time strand, it is judged that whether strand terminates；
If strand does not terminate, continue the strand of next unit strand time, and unit strand time number is added up；Or,
If strand terminates, stop strand, preserve unit strand time number.
3. slab scale according to claim 2 surveys rectangular method, it is characterised in that described judge whether strand terminates, including:
Detect the afterbody base head position of slab in real time；
If the current one strand time terminates, detect that described afterbody base head position and current end position are inconsistent, then strand does not terminate, and continues strand operation；Or,
If the current one strand time terminates, detect that described afterbody base head position is consistent with current end position, then strand terminates.
4. slab scale according to claim 1 surveys rectangular method, it is characterised in that instantaneous strand speed when described acquisition each unit strand time starts includes:
Obtain motor for withdrawal & straightening machine instant rotation speed and motor for withdrawal & straightening machine running frequency when starting of each unit strand time；
Instantaneous strand speed is obtained according to described instant rotation speed and described running frequency.
5. slab scale according to claim 4 surveys rectangular method, it is characterised in that described acquisition motor for withdrawal & straightening machine instant rotation speed includes:
Obtain the rated speed of motor for withdrawal & straightening machine and the speed reducing ratio of motor；
Obtain withdrawal straightening machine pulling-straightening roller diameter；
Described motor for withdrawal & straightening machine instant rotation speed is obtained according to described rated speed, described speed reducing ratio and described pulling-straightening roller diameter.
6. a slab scale length measurement system, it is characterised in that described system includes:
Presetting module, is used for presetting the unit strand time；
First acquisition module, terminates required unit strand time number for obtaining strand；
Second acquisition module, for obtain each unit strand time start time instantaneous strand speed；
Processing module, the strand length of instantaneous strand speed calculation each unit strand time when each unit strand time for obtaining according to described acquisition module starts, the strand length of each unit strand time is added and obtains slab length.
7. slab scale length measurement system according to claim 6, it is characterised in that described first acquisition module includes:
Counting unit, for when each unit strand time starts, adding up to the unit strand time number needed for strand；
Judging unit, for judging whether strand terminates when terminating current one strand time strand.
8. slab scale length measurement system according to claim 7, it is characterised in that described judging unit includes:
Detection sub-unit, for detecting the afterbody base head position of slab in real time；
Judgment sub-unit, for judging in the end current one strand time, the described afterbody base head position consistency whether current end position detects with described detection sub-unit.
9. slab scale length measurement system according to claim 6, it is characterised in that described second acquisition module includes:
Acquiring unit, is used for obtaining motor for withdrawal & straightening machine instant rotation speed and motor for withdrawal & straightening machine running frequency；
Processing unit, for processing described instant rotation speed and the described running frequency that described acquiring unit obtains, it is thus achieved that instantaneous strand speed.
10. slab scale length measurement system according to claim 9, it is characterised in that described acquiring unit includes:
Obtain subelement, for obtaining the rated speed of motor for withdrawal & straightening machine, the speed reducing ratio of motor and withdrawal straightening machine pulling-straightening roller diameter；
Processing subelement, the described rated speed, described speed reducing ratio and the described pulling-straightening roller diameter that obtain for processing described acquisition subelement obtain described motor for withdrawal & straightening machine instant rotation speed.
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| CN107378188A (en) * | 2017-06-02 | 2017-11-24 | 内蒙古包钢钢联股份有限公司 | A kind of strand method for scaling |
| CN107941186A (en) * | 2017-12-13 | 2018-04-20 | 山信软件股份有限公司 | A kind of displacement sensing system |
| CN107931554A (en) * | 2017-11-30 | 2018-04-20 | 山信软件股份有限公司 | A kind of continuous casting billet method for calculating and locating |
| CN107971347A (en) * | 2017-10-20 | 2018-05-01 | 唐山中厚板材有限公司 | The thick online hot long method of survey of hot rolled plate in one kind |
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| CN105710323B (en) | 2018-01-02 |
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