CN114042905A - Operation method for replacing sliding block under automatic liquid level control - Google Patents
Operation method for replacing sliding block under automatic liquid level control Download PDFInfo
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- CN114042905A CN114042905A CN202111256804.4A CN202111256804A CN114042905A CN 114042905 A CN114042905 A CN 114042905A CN 202111256804 A CN202111256804 A CN 202111256804A CN 114042905 A CN114042905 A CN 114042905A
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- liquid level
- sliding block
- pulling speed
- replacing
- crystallizer
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- 239000007788 liquid Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000008569 process Effects 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000005266 casting Methods 0.000 claims description 13
- 230000003213 activating effect Effects 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims 4
- 238000009749 continuous casting Methods 0.000 abstract description 16
- 230000007547 defect Effects 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to an operation method for replacing a sliding block under automatic liquid level control, which belongs to the technical field of continuous casting in the metallurgical industry and comprises the following steps: s1, confirming the process conditions for automatically replacing the sliding block; s2, taking down the submerged nozzle; s3, automatically replacing the sliding block; s4, controlling and intervening to adjust a crystallizer liquid level compensation process by pulling speed; s5, a process of controlling the pulling speed and automatically controlling the liquid level; s6, the flow of automatically replacing the sliding block is finished; s7, sleeving a submerged nozzle. The method realizes the automatic control of the liquid level after the online replacement when the sliding block is replaced online in continuous casting, and eliminates the technical problem of steel overflow or steel leakage caused by large fluctuation of the liquid level due to the unmatched switching time when the sliding block is replaced. The liquid level of the crystallizer can be quickly stabilized after the slide block is replaced, and the slag inclusion defect of the continuous casting billet caused by the fluctuation of the liquid level of molten steel in the crystallizer is avoided.
Description
Technical Field
The invention belongs to the technical field of continuous casting in the metallurgical industry, and relates to an operation method for replacing a sliding block under automatic liquid level control.
Background
In the current continuous casting process in the steel industry, in order to continuously produce, improve the working efficiency of a continuous casting machine, prolong the service life of a tundish and reduce the using number of the tundish, the online replacement of a sliding block becomes a process technology commonly used at home and abroad.
The online replacement of the sliding block means that the service life of the tundish is prolonged to achieve the purposes of cost reduction and efficiency improvement under the condition of not interrupting continuous casting production and not replacing a continuous casting tundish. The application of the technology for rapidly replacing the sliding block on line can greatly reduce the waste amount of head and tail blanks of continuous casting and improve the working efficiency of a continuous casting machine. However, the existing online quick-change sliding block is realized by manually controlling the pulling speed to adjust the liquid level of the crystallizer by field operation workers and manually activating a quick-change oil cylinder to finish the quick change of the sliding block. Because all the working processes of the continuous casting machine are finished manually, if the control difference between the casting speed and the liquid level of the crystallizer is too large, the liquid level fluctuation of the crystallizer is large, and the continuous casting machine overflows or leaks steel.
Disclosure of Invention
In view of the above, the present invention is to provide an operation method for replacing a slider under automatic liquid level control, so as to achieve automatic liquid level control after automatic online replacement when the slider is replaced online in continuous casting, and eliminate the technical problem of steel overflow or steel leakage caused by large liquid level fluctuation due to mismatch of switching time when the slider is replaced. The liquid level of the crystallizer can be quickly stabilized after the slide block is replaced, and the slag inclusion defect of the continuous casting billet caused by the fluctuation of the liquid level of molten steel in the crystallizer is avoided.
In order to achieve the above purpose, the invention provides the following technical scheme, comprising the following steps:
an operation method for replacing a slide block under automatic liquid level control comprises the following steps,
s1, confirming the process conditions for automatically replacing the sliding block;
s2, taking down the submerged nozzle;
s3, automatically replacing the sliding block;
s4, controlling and intervening to adjust a crystallizer liquid level compensation process by pulling speed;
s5, a process of controlling the pulling speed and automatically controlling the liquid level;
s6, the flow of automatically replacing the sliding block is finished;
s7, sleeving a submerged nozzle.
Further, step S1 is specifically operated as follows,
s11, in the normal casting process, confirming that the slide block needs to be replaced on line in the process;
s12, confirming that the quick-change mechanism is normal, and installing a new slide block in front of a preset track;
s13, replacing an activation button of the sliding block to enter a preparation mode;
s14, reading and recording the current casting machine pulling speed V;
s15, acquiring the function activation and recording of the sliding block corresponding to the pull speed model;
s16, automatically adjusting the pulling speed to adjust the liquid level of the crystallizer;
s17, when the casting machine pulling speed V is the process slider-changing pulling speed, activating an automatic slider-changing function, and if the pulling speed does not meet the requirement, continuously adjusting the pulling speed until the condition is met;
s18, when the system receives the replacing command and the pulling speed is equal to the standard process pulling speed of the slider replacing, the secondary control of the pulling speed is cancelled, and the steps S2 and S3 are executed.
Further, step S3 is specifically operated as follows,
s31, collecting and recording the liquid level of the crystallizer;
s32, activating the oil cylinder to act after delaying for 2 milliseconds, pushing the new sliding block into a working position, and pushing out the sliding block to be replaced;
and S33, taking out the old sliding block.
Further, step S4 is specifically operated as follows,
s41, after receiving an oil cylinder action signal, adjusting the pulling speed according to a crystallizer liquid surface fluctuation model to perform liquid level compensation;
s42, reading the current liquid level value, wherein the current liquid level value reaches the target liquid level value;
s43. the liquid level compensation process ends, and then proceeds to S5.
Further, the method comprises the following steps: the operation of step S5 is specifically as follows,
s51, reading the current liquid level value, judging whether the liquid level value is larger than a target liquid level value or not, and if so, starting the linkage between the liquid level of the crystallizer and the steel flow control mechanism after delaying for 2 seconds; if not, execution continues with S4;
s52, automatically increasing the pulling speed to the target process pulling speed according to the process pulling speed requirement.
The invention has the beneficial effects that:
1. misoperation is prevented, the unstable state of manual operation is avoided, and steel infiltration between plates caused by slide block replacement is reduced; the steel overflow or the steel leakage caused by the large fluctuation of the liquid level due to the unmatched switching time when the sliding block is replaced can be eliminated, the liquid level of the crystallizer can be rapidly stabilized after the sliding block is replaced, and the slag inclusion defect of the continuous casting billet caused by the fluctuation of the liquid level of the molten steel in the crystallizer is avoided.
2. The realization of the function of automatically replacing the slide block on line reduces the number of times of stopping casting of the casting machine, improves the operation rate of the casting machine, can also solve the problems of high labor intensity of workers and the like caused by replacing the slide block, and has great significance for improving the labor efficiency and realizing the intelligent manufacturing of continuous casting.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
An operation method for replacing a slide block under automatic liquid level control comprises the following steps,
step 1) S1, confirming the process condition of automatically replacing the sliding block;
s11, in the normal casting process, confirming that the slide block needs to be replaced on line in the process;
s12, confirming that the quick-change mechanism is normal, and installing a new slide block in front of a preset track;
s13, replacing an activation button of the sliding block to enter a preparation mode;
s14, reading and recording the current casting machine pulling speed V;
s15, acquiring the function activation and recording of the sliding block corresponding to the pull speed model;
s16, automatically adjusting the pulling speed to adjust the liquid level of the crystallizer;
s17, when the casting machine pulling speed V is the process slider-changing pulling speed, activating an automatic slider-changing function, and if the pulling speed does not meet the requirement, continuously adjusting the pulling speed until the condition is met;
s18, when the system receives the replacing command and the pulling speed is equal to the standard process pulling speed of the slider replacing, the secondary control of the pulling speed is cancelled, and the steps S2 and S3 are executed.
Step 2) S2, taking down the submerged nozzle;
step 3) S3, automatically replacing the sliding block;
s31, collecting and recording the liquid level of the crystallizer;
s32, activating the oil cylinder to act after delaying for 2 milliseconds, pushing the new sliding block into a working position, and pushing out the sliding block to be replaced;
and S33, taking out the old sliding block.
S4) S4, controlling and intervening to adjust the liquid level compensation process of the crystallizer by pulling speed;
s41, after receiving an oil cylinder action signal, adjusting the pulling speed according to a crystallizer liquid surface fluctuation model to perform liquid level compensation;
s42, reading the current liquid level value, wherein the current liquid level value reaches the target liquid level value;
s43. the liquid level compensation process ends, and then proceeds to S5.
Step 5) S5, controlling the pulling speed and automatically controlling the liquid level;
s51, reading the current liquid level value, judging whether the liquid level value is larger than a target liquid level value or not, and if so, starting the linkage between the liquid level of the crystallizer and the steel flow control mechanism after delaying for 2 seconds; if not, execution continues with S4;
s52, automatically increasing the pulling speed to the target process pulling speed according to the process pulling speed requirement.
Step 6) S6, finishing the process of automatically replacing the sliding block;
and 7) S7, sleeving a submerged nozzle.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (5)
1. An operation method for replacing a sliding block under automatic liquid level control is characterized in that: comprises the following steps of (a) carrying out,
s1, confirming the process conditions for automatically replacing the sliding block;
s2, taking down the submerged nozzle;
s3, automatically replacing the sliding block;
s4, controlling and intervening to adjust a crystallizer liquid level compensation process by pulling speed;
s5, a process of controlling the pulling speed and automatically controlling the liquid level;
s6, the flow of automatically replacing the sliding block is finished;
s7, sleeving a submerged nozzle.
2. The operating method for replacing a slider under automatic liquid level control according to claim 1, wherein: the operation of step S1 is specifically as follows,
s11, in the normal casting process, confirming that the slide block needs to be replaced on line in the process;
s12, confirming that the quick-change mechanism is normal, and installing a new slide block in front of a preset track;
s13, replacing an activation button of the sliding block to enter a preparation mode;
s14, reading and recording the current casting machine pulling speed V;
s15, acquiring the function activation and recording of the sliding block corresponding to the pull speed model;
s16, automatically adjusting the pulling speed to adjust the liquid level of the crystallizer;
s17, when the casting machine pulling speed V is the process slider-changing pulling speed, activating an automatic slider-changing function, and if the pulling speed does not meet the requirement, continuously adjusting the pulling speed until the condition is met;
s18, when the system receives the replacing command and the pulling speed is equal to the standard process pulling speed of the slider replacing, the secondary control of the pulling speed is cancelled, and the steps S2 and S3 are executed.
3. The operating method for replacing a slider under automatic liquid level control according to claim 1, wherein: the operation of step S3 is specifically as follows,
s31, collecting and recording the liquid level of the crystallizer;
s32, activating the oil cylinder to act after delaying for 2 milliseconds, pushing the new sliding block into a working position, and pushing out the sliding block to be replaced;
and S33, taking out the old sliding block.
4. The operating method for replacing a slider under automatic liquid level control according to claim 1, wherein: the operation of step S4 is specifically as follows,
s41, after receiving an oil cylinder action signal, adjusting the pulling speed according to a crystallizer liquid surface fluctuation model to perform liquid level compensation;
s42, reading the current liquid level value, wherein the current liquid level value reaches the target liquid level value;
s43. the liquid level compensation process ends, and then proceeds to S5.
5. The operating method for replacing a slider under automatic liquid level control according to claim 1, wherein: the operation of step S5 is specifically as follows,
s51, reading the current liquid level value, judging whether the liquid level value is larger than a target liquid level value or not, and if so, starting the linkage between the liquid level of the crystallizer and the steel flow control mechanism after delaying for 2 seconds; if not, execution continues with S4;
s52, automatically increasing the pulling speed to the target process pulling speed according to the process pulling speed requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111256804.4A CN114042905A (en) | 2021-10-27 | 2021-10-27 | Operation method for replacing sliding block under automatic liquid level control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111256804.4A CN114042905A (en) | 2021-10-27 | 2021-10-27 | Operation method for replacing sliding block under automatic liquid level control |
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| Publication Number | Publication Date |
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| CN114042905A true CN114042905A (en) | 2022-02-15 |
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| CN202111256804.4A Pending CN114042905A (en) | 2021-10-27 | 2021-10-27 | Operation method for replacing sliding block under automatic liquid level control |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1783174A1 (en) * | 1964-11-25 | 1974-04-18 | Benteler Geb Paderwerk | PROCEDURE AND AUXILIARY DEVICE FOR THE INSTALLATION AND ADJUSTMENT OF THE FIRE-RESISTANT COMPONENTS OF ADJUSTABLE FLOOR SEALS FOR STEEL CASTING PANs |
| CN201442099U (en) * | 2009-07-30 | 2010-04-28 | 莱芜钢铁股份有限公司 | Quick nozzle changing device for stopper ladle used for square and rectangular billets |
| CN103273053A (en) * | 2013-06-13 | 2013-09-04 | 济钢集团有限公司 | Tundish composite flow control process for slab continuous casting machine and equipment of tundish composite flow control process |
| CN207402104U (en) * | 2017-09-29 | 2018-05-25 | 江苏高鑫高温新材料科技有限公司 | A kind of fast sprue-replacing device of stopper rod of tundish cooperation |
| CN209716458U (en) * | 2019-01-09 | 2019-12-03 | 济南双凤耐火材料有限公司 | A kind of slab submerged nozzle quick-changing mechanism |
| CN110961615A (en) * | 2018-09-30 | 2020-04-07 | 上海梅山钢铁股份有限公司 | Method for automatically replacing submerged nozzle on line based on automatic liquid level control |
| CN112658242A (en) * | 2020-12-03 | 2021-04-16 | 山东钢铁集团日照有限公司 | Method for reducing bonding by replacing submerged nozzle |
| CN113084145A (en) * | 2021-04-02 | 2021-07-09 | 重庆钢铁股份有限公司 | Continuous casting tundish nozzle replacing process |
-
2021
- 2021-10-27 CN CN202111256804.4A patent/CN114042905A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1783174A1 (en) * | 1964-11-25 | 1974-04-18 | Benteler Geb Paderwerk | PROCEDURE AND AUXILIARY DEVICE FOR THE INSTALLATION AND ADJUSTMENT OF THE FIRE-RESISTANT COMPONENTS OF ADJUSTABLE FLOOR SEALS FOR STEEL CASTING PANs |
| CN201442099U (en) * | 2009-07-30 | 2010-04-28 | 莱芜钢铁股份有限公司 | Quick nozzle changing device for stopper ladle used for square and rectangular billets |
| CN103273053A (en) * | 2013-06-13 | 2013-09-04 | 济钢集团有限公司 | Tundish composite flow control process for slab continuous casting machine and equipment of tundish composite flow control process |
| CN207402104U (en) * | 2017-09-29 | 2018-05-25 | 江苏高鑫高温新材料科技有限公司 | A kind of fast sprue-replacing device of stopper rod of tundish cooperation |
| CN110961615A (en) * | 2018-09-30 | 2020-04-07 | 上海梅山钢铁股份有限公司 | Method for automatically replacing submerged nozzle on line based on automatic liquid level control |
| CN209716458U (en) * | 2019-01-09 | 2019-12-03 | 济南双凤耐火材料有限公司 | A kind of slab submerged nozzle quick-changing mechanism |
| CN112658242A (en) * | 2020-12-03 | 2021-04-16 | 山东钢铁集团日照有限公司 | Method for reducing bonding by replacing submerged nozzle |
| CN113084145A (en) * | 2021-04-02 | 2021-07-09 | 重庆钢铁股份有限公司 | Continuous casting tundish nozzle replacing process |
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Application publication date: 20220215 |