CN108380838A - A kind of casting speed control method of continuous casting - Google Patents
A kind of casting speed control method of continuous casting Download PDFInfo
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- CN108380838A CN108380838A CN201810164343.XA CN201810164343A CN108380838A CN 108380838 A CN108380838 A CN 108380838A CN 201810164343 A CN201810164343 A CN 201810164343A CN 108380838 A CN108380838 A CN 108380838A
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- Prior art keywords
- pulling rate
- rate
- current
- variation
- amplitude
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Classifications
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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
- B22D11/18—Controlling or regulating processes or operations for pouring
Abstract
The present invention relates to continuous casting technology fields more particularly to a kind of casting speed control method of continuous casting, method to include：During continuous casting, current pulling rate and target pull rate are determined；Compare the size of current pulling rate and target pull rate；If current pulling rate is more than target pull rate, judge the pulling rate amplitude of variation between target pull rate and current pulling rate whether in predetermined amplitude variation range；If pulling rate amplitude of variation is adjusted to desired deceleration corresponding with predetermined amplitude variation range in predetermined amplitude variation range, by pulling rate deceleration；If current pulling rate is less than target pull rate, judge current pulling rate whether within the scope of default pulling rate；If pulling rate acceleration is adjusted to aimed acceleration corresponding with default pulling rate range by current pulling rate within the scope of default pulling rate.The present invention can avoid covering slag in pulling rate change process from being involved in strand, improve the quality of strand.
Description
Technical field
The present invention relates to continuous casting technology field more particularly to a kind of casting speed control methods of continuous casting.
Background technology
In the normal casting process of continuous casting, the case where production requirement needs to change cast pulling rate, such case are frequently encountered
It cannot be satisfied in cast demand and casting process including on-line width adjustment and for steel rhythm and emergency situations occurs.And the above situation
Pulling rate variation can not avoid, if being very easy to make covering slag be involved in during pulling rate changes without reasonably controlling
Strand causes strand to occur slag defect during the rolling process, to reduce the quality of strand.
Invention content
In view of the above problems, it is proposed that the present invention overcoming the above problem in order to provide one kind or solves at least partly
State the casting speed control method of the continuous casting of problem.
The embodiment of the present invention provides a kind of casting speed control method of continuous casting, the method includes：
During continuous casting, current pulling rate and target pull rate are determined；
Compare the size of the current pulling rate and the target pull rate；
If the current pulling rate is more than the target pull rate, judge between the target pull rate and the current pulling rate
Whether pulling rate amplitude of variation is in predetermined amplitude variation range；
If the pulling rate amplitude of variation in the predetermined amplitude variation range, by pulling rate deceleration be adjusted to it is described
The corresponding desired deceleration of predetermined amplitude variation range；
If the current pulling rate is less than the target pull rate, judge the current pulling rate whether in default pulling rate range
It is interior；
If within the scope of the default pulling rate, pulling rate acceleration is adjusted to and the default pulling rate for the current pulling rate
The corresponding aimed acceleration of range.
Preferably, whether the pulling rate amplitude of variation judged between the target pull rate and the current pulling rate is default
In rangeability, including：
Judge whether pulling rate amplitude of variation between the target pull rate and the current pulling rate is more than 0.5m/min and small
In 1m/min；
If the pulling rate amplitude of variation in the predetermined amplitude variation range, by pulling rate deceleration be adjusted to
The corresponding desired deceleration of the predetermined amplitude variation range, including：
If the pulling rate amplitude of variation between the target pull rate and the current pulling rate is more than 0.5m/min and is less than 1m/
The pulling rate deceleration is then adjusted to the desired deceleration by min, and the desired deceleration is in 0.20~0.30m/min2
It is interior.
Preferably, the desired deceleration is 0.20m/min2。
Preferably, whether the pulling rate amplitude of variation judged between the target pull rate and the current pulling rate is default
In rangeability, including：
Judge whether the pulling rate amplitude of variation between the target pull rate and the current pulling rate is less than or equal to 0.5m/
min；
If the pulling rate amplitude of variation in the predetermined amplitude variation range, by pulling rate deceleration be adjusted to
The corresponding desired deceleration of the predetermined amplitude variation range, including：
It, will if the pulling rate amplitude of variation between the target pull rate and the current pulling rate is less than or equal to 0.5m/min
The pulling rate deceleration is adjusted to the desired deceleration, and the desired deceleration is in 0.05~0.01m/min2It is interior.
Preferably, the desired deceleration is 0.05m/min2。
Preferably, described to judge the current pulling rate whether within the scope of default pulling rate, including：
Judge whether the current pulling rate is greater than or equal to 0.6m/min；
If the current pulling rate is adjusted to preset with described within the scope of the default pulling rate, by pulling rate acceleration
The corresponding aimed acceleration of pulling rate range, including：
If the current pulling rate is greater than or equal to 0.6m/min, the pulling rate acceleration is adjusted to the target and is accelerated
Degree, the aimed acceleration is in 0.03~0.05m/min2It is interior.
Preferably, the aimed acceleration is 0.03m/min2。
Preferably, described to judge the current pulling rate whether within the scope of default pulling rate, including：
Judge whether the current pulling rate is less than 0.6m/min；
If the current pulling rate is adjusted to preset with described within the scope of the default pulling rate, by pulling rate acceleration
The corresponding aimed acceleration of pulling rate range, including：
If the current pulling rate is less than 0.6m/min, the pulling rate acceleration is adjusted to the aimed acceleration, institute
Aimed acceleration is stated in 0.20~0.30m/min2It is interior.
Preferably, the aimed acceleration is 0.20m/min2。
One or more of embodiment of the present invention technical solution, has at least the following technical effects or advantages：
The present invention is by during continuous casting, first determining current pulling rate and target pull rate, then relatively more current drawing
The size of speed and target pull rate judges that the pulling rate between target pull rate and current pulling rate becomes if current pulling rate is more than target pull rate
Whether change amplitude is in predetermined amplitude variation range, if pulling rate amplitude of variation subtracts pulling rate in predetermined amplitude variation range
Speed is adjusted to desired deceleration corresponding with predetermined amplitude variation range, if current pulling rate is less than target pull rate, judges to work as
Preceding pulling rate whether within the scope of default pulling rate, if current pulling rate within the scope of default pulling rate, by pulling rate acceleration be adjusted to
The corresponding aimed acceleration of pulling rate range is preset, to by the way that pulling rate deceleration is adjusted to desired deceleration or adds pulling rate
Speed is adjusted to aimed acceleration, and covering slag in pulling rate change process can be avoided to be involved in strand, improve the quality of strand.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.And throughout the drawings, identical component is indicated with identical reference pattern.In the accompanying drawings：
Fig. 1 shows a kind of flow chart of the casting speed control method of continuous casting in the embodiment of the present invention.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
The embodiment of the present invention provides a kind of casting speed control method of continuous casting, as shown in Figure 1, the method includes：
Step 101：During continuous casting, current pulling rate and target pull rate are determined.
Step 102：Compare the size of current pulling rate and target pull rate.
Step 103：If current pulling rate is more than target pull rate, the pulling rate variation between target pull rate and current pulling rate is judged
Whether amplitude is in predetermined amplitude variation range, if pulling rate amplitude of variation slows down pulling rate in predetermined amplitude variation range
Degree is adjusted to desired deceleration corresponding with predetermined amplitude variation range.
Step 104：If current pulling rate is less than target pull rate, current pulling rate is judged whether within the scope of default pulling rate, if
Pulling rate acceleration is then adjusted to aimed acceleration corresponding with default pulling rate range by current pulling rate within the scope of default pulling rate.
In specific implementation process, if current pulling rate is more than target pull rate, it is shown to be reduction pulling rate；If current pulling rate is small
In target pull rate, then raising pulling rate is shown to be.
When reducing pulling rate, step 103 is specially：Judging the pulling rate amplitude of variation between target pull rate and current pulling rate is
It is no to be more than 0.5m/min and be less than 1m/min, if the pulling rate amplitude of variation between target pull rate and current pulling rate is more than 0.5m/min
And be less than 1m/min, then pulling rate deceleration is adjusted to desired deceleration, desired deceleration is in 0.20~0.30m/min2It is interior.It is excellent
Choosing, desired deceleration 0.20m/min2。
When reducing pulling rate, step 103 is specially：Judging the pulling rate amplitude of variation between target pull rate and current pulling rate is
It is no to be less than or equal to 0.5m/min, if the pulling rate amplitude of variation between target pull rate and current pulling rate is less than or equal to 0.5m/
Pulling rate deceleration is then adjusted to desired deceleration by min, and desired deceleration is in 0.05~0.01m/min2It is interior.Preferably, target
Deceleration is 0.05m/min2。
When improving pulling rate, step 104 is specially：Judge whether current pulling rate is greater than or equal to 0.6m/min, if currently
Pulling rate is greater than or equal to 0.6m/min, then pulling rate acceleration is adjusted to aimed acceleration, aimed acceleration 0.03~
0.05m/min2It is interior.Preferably, aimed acceleration 0.03m/min2。
When improving pulling rate, step 104 is specially：Judge whether current pulling rate is less than 0.6m/min, if current pulling rate is small
In 0.6m/min, then pulling rate acceleration is adjusted to aimed acceleration, aimed acceleration is in 0.20~0.30m/min2It is interior.It is preferred that
, aimed acceleration 0.20m/min2。
It should be noted that if when current pulling rate is equal to target pull rate, then pulling rate is failure to actuate.It is more than target in current pulling rate
In the case of pulling rate, if pulling rate amplitude of variation not in the range of more than 0.5m/min and less than 1m/min, also not being less than or
In the range of 0.5m/min, then show to be currently at accident condition, and usually each factory has in advance in the state of accident
The processing scheme made, at this point it is possible to be handled according to the processing scheme pre-established, for example, will can subtract automatically
Speed is adjusted to 12m/min.
The specific embodiment of the casting speed control method application of four continuous castings by the application in practice is given below.
Embodiment one：If current pulling rate is 0.8m/min and target pull rate is 1.5m/min, it is shown to be raising pulling rate, into
Pulling rate acceleration is then adjusted to 0.03m/min by one step since current pulling rate is more than 0.6m/min2, to which pulling rate is with acceleration
0.03m/min21.5m/min is accelerated to from 0.8m/min.
Embodiment two：If current pulling rate is 0.5m/min and target pull rate is 1.6m/min, it is shown to be raising pulling rate, into
Pulling rate acceleration is then adjusted to 0.02m/min by one step since current pulling rate is less than 0.6m/min2, to which pulling rate is with acceleration
0.20m/min21.6m/min is accelerated to from 0.5m/min.
Embodiment three：If current pulling rate is 1.7m/min and target pull rate is 1.3m/min, it is shown to be reduction pulling rate, into
One step meets since pulling rate amplitude of variation is 0.4m/min and is less than 0.5m/min, then pulling rate deceleration is adjusted to 0.05m/
min2, to which pulling rate is with deceleration 0.05m/min2It is decelerated to 1.3m/min from 1.7m/min.
Example IV：If current pulling rate is 1.7m/min and target pull rate is 1.0m/min, it is shown to be reduction pulling rate, into
One step meets more than 0.5m/min since pulling rate amplitude of variation is 0.7m/min and is less than 1.0m/min, then by pulling rate deceleration
It is adjusted to 0.20m/min2, to which pulling rate is with deceleration 0.20m/min2It is decelerated to 1.0m/min from 1.7m/min.”
One or more of embodiment of the present invention technical solution, has at least the following technical effects or advantages：
The present invention is by during continuous casting, first determining current pulling rate and target pull rate, then relatively more current drawing
The size of speed and target pull rate judges that the pulling rate between target pull rate and current pulling rate becomes if current pulling rate is more than target pull rate
Whether change amplitude is in predetermined amplitude variation range, if pulling rate amplitude of variation subtracts pulling rate in predetermined amplitude variation range
Speed is adjusted to desired deceleration corresponding with predetermined amplitude variation range, if current pulling rate is less than target pull rate, judges to work as
Preceding pulling rate whether within the scope of default pulling rate, if current pulling rate within the scope of default pulling rate, by pulling rate acceleration be adjusted to
The corresponding aimed acceleration of pulling rate range is preset, to by the way that pulling rate deceleration is adjusted to desired deceleration or adds pulling rate
Speed is adjusted to aimed acceleration, and covering slag in pulling rate change process can be avoided to be involved in strand, improve the quality of strand.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of casting speed control method of continuous casting, which is characterized in that the method includes：
During continuous casting, current pulling rate and target pull rate are determined；
Compare the size of the current pulling rate and the target pull rate；
If the current pulling rate is more than the target pull rate, the pulling rate between the target pull rate and the current pulling rate is judged
Whether amplitude of variation is in predetermined amplitude variation range；
If the pulling rate amplitude of variation is adjusted to preset with described in the predetermined amplitude variation range, by pulling rate deceleration
The corresponding desired deceleration of rangeability；
If the current pulling rate is less than the target pull rate, judge the current pulling rate whether within the scope of default pulling rate；
If within the scope of the default pulling rate, pulling rate acceleration is adjusted to and the default pulling rate range for the current pulling rate
Corresponding aimed acceleration.
2. the method as described in claim 1, which is characterized in that between the judgement target pull rate and the current pulling rate
Pulling rate amplitude of variation whether in predetermined amplitude variation range, including：
Judge whether the pulling rate amplitude of variation between the target pull rate and the current pulling rate is more than 0.5m/min and is less than 1m/
min；
If the pulling rate amplitude of variation in the predetermined amplitude variation range, by pulling rate deceleration be adjusted to it is described
The corresponding desired deceleration of predetermined amplitude variation range, including：
If the pulling rate amplitude of variation between the target pull rate and the current pulling rate is more than 0.5m/min and is less than 1m/min,
The pulling rate deceleration is adjusted to the desired deceleration, the desired deceleration is in 0.20~0.30m/min2It is interior.
3. method as claimed in claim 2, which is characterized in that the desired deceleration is 0.20m/min2。
4. the method as described in claim 1, which is characterized in that between the judgement target pull rate and the current pulling rate
Pulling rate amplitude of variation whether in predetermined amplitude variation range, including：
Judge whether the pulling rate amplitude of variation between the target pull rate and the current pulling rate is less than or equal to 0.5m/min；
If the pulling rate amplitude of variation in the predetermined amplitude variation range, by pulling rate deceleration be adjusted to it is described
The corresponding desired deceleration of predetermined amplitude variation range, including：
It, will be described if the pulling rate amplitude of variation between the target pull rate and the current pulling rate is less than or equal to 0.5m/min
Pulling rate deceleration is adjusted to the desired deceleration, and the desired deceleration is in 0.05~0.01m/min2It is interior.
5. method as claimed in claim 4, which is characterized in that the desired deceleration is 0.05m/min2。
6. the method as described in claim 1, which is characterized in that described to judge the current pulling rate whether in default pulling rate range
It is interior, including：
Judge whether the current pulling rate is greater than or equal to 0.6m/min；
If within the scope of the default pulling rate, pulling rate acceleration is adjusted to and the default pulling rate for the current pulling rate
The corresponding aimed acceleration of range, including：
If the current pulling rate is greater than or equal to 0.6m/min, the pulling rate acceleration is adjusted to the aimed acceleration,
The aimed acceleration is in 0.03~0.05m/min2It is interior.
7. method as claimed in claim 6, which is characterized in that the aimed acceleration is 0.03m/min2。
8. the method as described in claim 1, which is characterized in that described to judge the current pulling rate whether in default pulling rate range
It is interior, including：
Judge whether the current pulling rate is less than 0.6m/min；
If within the scope of the default pulling rate, pulling rate acceleration is adjusted to and the default pulling rate for the current pulling rate
The corresponding aimed acceleration of range, including：
If the current pulling rate is less than 0.6m/min, the pulling rate acceleration is adjusted to the aimed acceleration, the mesh
Acceleration is marked in 0.20~0.30m/min2It is interior.
9. method as claimed in claim 8, which is characterized in that the aimed acceleration is 0.20m/min2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164343.XA CN108380838B (en) | 2018-02-27 | 2018-02-27 | Pulling speed control method for continuous casting pouring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164343.XA CN108380838B (en) | 2018-02-27 | 2018-02-27 | Pulling speed control method for continuous casting pouring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108380838A true CN108380838A (en) | 2018-08-10 |
| CN108380838B CN108380838B (en) | 2021-04-23 |
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|---|---|---|---|
| CN201810164343.XA Active CN108380838B (en) | 2018-02-27 | 2018-02-27 | Pulling speed control method for continuous casting pouring |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003117642A (en) * | 2001-10-15 | 2003-04-23 | Nippon Steel Corp | Unit for controlling continuous caster |
| CN1971457A (en) * | 2005-11-25 | 2007-05-30 | 中国科学院沈阳计算技术研究所有限公司 | Speed control method used for numerical control machine |
| CN103246236A (en) * | 2013-05-23 | 2013-08-14 | 南京工业大学 | Speed control method for numerical control system in consideration of small line segment and connection point speed |
| CN104971950A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Automatic deceleration control method of tandem cold mill |
| CN105268937A (en) * | 2015-10-23 | 2016-01-27 | 首钢京唐钢铁联合有限责任公司 | Method for controlling quick changing water gap of tundish of continuous casting machine |
| CN106168790A (en) * | 2016-02-29 | 2016-11-30 | 华南理工大学 | A kind of online change target velocity and the S-shaped Acceleration-deceleration Control Method of position |
| CN106891723A (en) * | 2017-03-10 | 2017-06-27 | 韩世杰 | Speed adjusting method and system |
-
2018
- 2018-02-27 CN CN201810164343.XA patent/CN108380838B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003117642A (en) * | 2001-10-15 | 2003-04-23 | Nippon Steel Corp | Unit for controlling continuous caster |
| CN1971457A (en) * | 2005-11-25 | 2007-05-30 | 中国科学院沈阳计算技术研究所有限公司 | Speed control method used for numerical control machine |
| CN103246236A (en) * | 2013-05-23 | 2013-08-14 | 南京工业大学 | Speed control method for numerical control system in consideration of small line segment and connection point speed |
| CN104971950A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Automatic deceleration control method of tandem cold mill |
| CN105268937A (en) * | 2015-10-23 | 2016-01-27 | 首钢京唐钢铁联合有限责任公司 | Method for controlling quick changing water gap of tundish of continuous casting machine |
| CN106168790A (en) * | 2016-02-29 | 2016-11-30 | 华南理工大学 | A kind of online change target velocity and the S-shaped Acceleration-deceleration Control Method of position |
| CN106891723A (en) * | 2017-03-10 | 2017-06-27 | 韩世杰 | Speed adjusting method and system |
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| Publication number | Publication date |
|---|---|
| CN108380838B (en) | 2021-04-23 |
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