CN116099996B - A method for preventing flat slabs from occurring in thin slab continuous casting machines - Google Patents
A method for preventing flat slabs from occurring in thin slab continuous casting machines Download PDFInfo
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- CN116099996B CN116099996B CN202310022369.1A CN202310022369A CN116099996B CN 116099996 B CN116099996 B CN 116099996B CN 202310022369 A CN202310022369 A CN 202310022369A CN 116099996 B CN116099996 B CN 116099996B
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- CN
- China
- Prior art keywords
- ingot
- dummy bar
- crystallizer
- consumables
- rod
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000009749 continuous casting Methods 0.000 title claims abstract description 15
- 238000005266 casting Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000006748 scratching Methods 0.000 claims description 3
- 230000002393 scratching effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- 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
- B22D11/08—Accessories for starting the casting procedure
- B22D11/081—Starter bars
- B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
本申请提供一种薄板坯连铸机避免卧坯的方法，涉及冶金技术领域，包括以下步骤：步骤一：观察消耗件与脱引锭装置相对位置；步骤二：如果消耗件未通过脱引锭装置；手动启动脱引锭装置，将引锭杆与消耗件脱开；步骤三：如果消耗件已经通过脱引锭装置，立即停浇；步骤四：将结晶器打开；步骤五：反向启动拉矫机，同时下降引锭杆回收装置；步骤六：手动启动脱引锭装置，将引锭杆与消耗件脱开；步骤七：使用卷扬回收引锭杆；步骤八：正向启动拉矫机，将扇形段内铸坯从结晶器内快速拉出。采用本申请提供的方法，通过脱引锭装置即可将引锭杆与消耗件脱开，处理时间缩短，保证作业率，避免或减少人工切割铸坯情况，减轻操作人员负担，提高安全系数。
The present application provides a method for thin slab continuous casting machine to avoid flat billets, which relates to the field of metallurgical technology and includes the following steps: step one: observe the relative position of the consumables and the ingot stripping device; step two: if the consumables have not passed through the ingot stripping device; manually start the ingot stripping device to disengage the ingot rod from the consumables; step three: if the consumables have passed through the ingot stripping device, stop casting immediately; step four: open the crystallizer; step five: reverse start the straightening machine and lower the ingot stripping device at the same time; step six: manually start the ingot stripping device to disengage the ingot stripping rod from the consumables; step seven: use a winch to recover the ingot stripping rod; step eight: forward start the straightening machine to quickly pull the billet in the fan-shaped segment out of the crystallizer. By adopting the method provided by the present application, the ingot stripping device can be used to disengage the ingot stripping rod from the consumables, shorten the processing time, ensure the operating rate, avoid or reduce the situation of manual cutting of billets, reduce the burden on operators, and improve the safety factor.
Description
Technical Field
The application relates to the technical field of metallurgy, in particular to a method for avoiding blank lying of a sheet billet continuous casting machine.
Background
In continuous casting equipment, the dummy ingot device plays an important role. The method comprises the steps of extending a consumable part at the upper end of a dummy bar into a crystallizer before casting, plugging the lower part of the crystallizer as the movable bottom of the crystallizer, solidifying the end part of a casting blank and the consumable part into a whole along with solidification of molten steel after casting, using a dummy bar as a blank pulling transmission part to continuously pull the casting blank out of the crystallizer, and rapidly disconnecting a dummy head and the consumable part which is integrated with the casting blank by a dummy bar stripping device after the consumable part connected with the dummy bar passes through the last horizontal section, and conveying the dummy bar to a dummy bar storage device for storage for next casting. In the continuous sheet slab casting production, there are cases where the casting machine fails to strip the ingot due to tracking problems, equipment problems or operation reasons, and the production is stopped.
At the moment, the bolts of the consumable parts are dismantled by stopping the casting machine, the dummy bar is disconnected from the consumable parts, casting blanks in the sector section of the casting machine are pulled out, the waiting time of the casting blanks in the sector section is long, the temperature of the casting blanks is low, the straightening stress is large, the service life of the sector section and the roll gap precision can be seriously influenced, the liquid level fluctuation is further caused during production, the slag rolling degradation and other consequences are further caused, steel leakage accidents can be caused during serious conditions, the equipment maintenance cost is increased, and the production stability is influenced. If the steel is processed according to the lying blank, the processing time is long, the operation rate is influenced, the steel balance is influenced, and the production of companies is influenced.
Disclosure of Invention
The invention aims to provide a method for avoiding blank lying of a sheet billet continuous casting machine, which has the advantages of reducing equipment damage caused by low-temperature casting blank pulling, effectively reducing equipment maintenance cost, reducing accident loss, guaranteeing operation rate, prolonging the service life of a fan-shaped section casting blank, guaranteeing roll gap precision, avoiding blank lying treatment, reducing labor cost of accident treatment, relieving operator burden and improving safety coefficient, and solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A method for avoiding strand in a thin slab caster, comprising:
the casting blank is arranged in the crystallizer;
the driving roller is arranged below the crystallizer and drives the casting blank;
a consumable;
the consumable part is arranged on the dummy bar;
the dummy bar removing device is arranged below the dummy bar and is used for jacking the dummy bar and separating the dummy bar from the consumable part;
the method for avoiding blank lying of the sheet billet continuous casting machine comprises the following steps:
Step one, observing the relative positions of a consumable part and a dummy ingot removing device;
Step two, if the consumable part does not pass through the dummy ingot removing device, reducing the blank pulling speed of the casting machine to 0.3m/min;
If the consumable part passes through the dummy ingot removing device, immediately stopping pouring, and opening 0, 1 and 2 sections of roll gaps to the thickness of the outlet of the crystallizer so that the tail blank liquid core falls back to a position below the 0 section of inlet;
Step four, opening the crystallizer;
Step five, reversely starting the withdrawal and straightening machine, and simultaneously descending the dummy bar recovery device to enable the casting blank and the dummy bar to reversely move until the consumable part returns to the front of the dummy bar removal device;
Step six, manually starting a dummy bar removing device to remove the dummy bar from the consumable part;
step seven, recovering the dummy bar by using a winch;
and step eight, starting the withdrawal and straightening machine in the forward direction, and rapidly withdrawing the casting blank in the sector section from the crystallizer.
In a still further aspect of the present invention, in the first step, the relative position of the consumable part and the dummy ingot removing device is observed to determine whether the consumable part passes through the dummy ingot removing device.
In the second step, the dummy bar is manually started, and the dummy bar is lifted by the dummy bar removing device to separate the dummy bar from the consumable part.
In the fourth step, the crystallizer is opened to prevent the shell from scratching the copper plate of the crystallizer.
In the sixth step, the dummy bar is manually started, and the dummy bar is lifted by the dummy bar removing device to separate the dummy bar from the consumable part.
In the seventh step, the dummy bar is recovered by using a winch, so that a space is reserved for the casting blank to be pulled out.
Compared with the prior art, the invention has the beneficial effects that:
1. By adopting the method provided by the application, the dummy bar and the consumable part can be separated through the dummy bar separating device without removing the consumable part bolts, the processing time is shortened, the temperature of the casting blank is more than 1000 ℃, the straightening force of the casting blank is completely within the bearable range of the sector section, the damage to equipment caused by low-temperature casting blank pulling out is reduced, and the equipment maintenance cost is effectively reduced;
2. By adopting the method provided by the application, the accident handling time is shortened by 7 hours compared with that of the horizontal blank, the standby operation can be performed after the casting blank is pulled out, the accident loss is reduced, the operation rate is ensured, the service life of the casting blank with a fan-shaped section is prolonged, and the roll gap precision is ensured;
3. By adopting the method provided by the application, the horizontal blank treatment is avoided, and the labor cost of accident treatment is reduced;
4. by adopting the method provided by the application, the condition of manually cutting the casting blank is avoided or reduced, the burden of operators is lightened, and the safety coefficient is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the figures in the following description are only some embodiments of the application, from which other figures can be obtained without inventive effort for a person skilled in the art.
For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.
Fig. 1 is a schematic structural view of a method for avoiding blank laying in a thin slab caster according to an embodiment of the present application.
Fig. 2 is a partial enlarged view of a in fig. 1.
Fig. 3 is a partial enlarged view of B in fig. 1.
The marks in the figure are as follows:
1. crystallizer, driving roller, casting blank, consuming part, dummy bar and dummy bar unit.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
Referring to fig. 1 to 3, an embodiment of the present application provides a method for avoiding blank laying in a thin slab caster, including:
The casting blank 3 is arranged in the crystallizer 1;
The driving roller 2 is arranged below the crystallizer 1 and drives the casting blank 3;
a consumable 4;
the dummy bar 5, the consumable 4 is set on the dummy bar 5;
the dummy bar removing device 6 is arranged below the dummy bar 5 and is used for jacking the dummy bar 5 and separating the dummy bar 5 from the consumable part 4;
the method for avoiding the blank lying of the sheet billet continuous casting machine comprises the following steps:
firstly, observing the relative positions of the consumable part 4 and the dummy ingot removing device 6;
Step two, if the consumable part 4 does not pass through the dummy ingot removing device 6, reducing the blank pulling speed of the casting machine to 0.3m/min, manually starting the dummy ingot removing device 6, and removing the dummy bar 5 from the consumable part 4;
If the consumable part 4 passes through the dummy ingot removing device 6, immediately stopping pouring, and opening 0, 1 and 2 sections of roll gaps to the thickness of the outlet of the crystallizer 1 so that the tail blank liquid core falls back to a position below the 0 section of inlet;
Step four, opening the crystallizer 1;
step five, reversely starting the withdrawal and straightening machine, and simultaneously descending the dummy bar 5 recovery device to enable the casting blank 3 and the dummy bar 5 to reversely move until the consumable part 4 returns to the front of the dummy bar removing device 6;
step six, manually starting a dummy bar removing device 6 to remove the dummy bar 5 from the consumable part 4;
Step seven, recovering the dummy bar 5 by using a winch;
and step eight, starting the withdrawal and straightening machine in the forward direction, and rapidly withdrawing the casting blank 3 in the fan-shaped section from the crystallizer 1.
The method provided by the application has the advantages that the bolt of the consumable part 4 is not required to be dismantled, the dummy bar 5 and the consumable part 4 can be separated through the dummy bar removing device 6, the processing time is shortened, the temperature of the casting blank 3 is higher than 1000 ℃, the straightening force of the casting blank 3 is completely within the bearable range of the sector section, the damage to equipment caused by pulling out of the low-temperature casting blank 3 is reduced, the equipment maintenance cost is effectively reduced, the accident handling time is shortened by 7 hours compared with that of the horizontal blank, the standby operation can be performed after the casting blank 3 is pulled out, the accident loss is reduced, the operation rate is ensured, the service life of the casting blank 3 of the sector section is prolonged, and the roll gap precision is ensured.
In a preferred embodiment of the present invention, in step one, the relative positions of the consumable part 4 and the dummy ingot removing device 6 are observed to determine whether the consumable part 4 passes through the dummy ingot removing device 6, so as to determine the step selected in one step;
In a preferred embodiment of the invention, in the second step, the dummy bar removing device 6 is manually started, the dummy bar 5 is lifted by the dummy bar removing device 6, the dummy bar 5 is separated from the consumable part 4, and the consumable part 4 does not need to be detached by bolts, so that the processing time is shortened.
In a preferred embodiment of the present invention, in step four, the mold 1 is opened to prevent the shell from scratching the copper plate in the mold 1 and damaging the mold 1.
In a preferred embodiment of the present invention, in step six, the dummy bar removing device 6 is manually started, the dummy bar 5 is lifted by the dummy bar removing device 6, the dummy bar 5 is separated from the consumable part 4, and the consumable part 4 does not need to be removed by bolts, so that the processing time is shortened.
In a preferred embodiment of the invention, in the seventh step, a winch is used for recovering the dummy bar 5, so that a space is reserved for pulling out the casting blank 3, and after the dummy bar 5 is recovered by the winch, a space is reserved for pulling out the crystallizer 1 for pulling out the casting blank 3, so that the casting blank 3 is pulled out from the crystallizer 1;
The method provided by the application has the advantages that the bolt of the consumable part 4 is not required to be dismantled, the dummy bar 5 and the consumable part 4 can be separated through the dummy bar removing device 6, the processing time is shortened, the temperature of the casting blank 3 is higher than 1000 ℃, the straightening force of the casting blank 3 is completely within the bearable range of the sector section, the damage to equipment caused by pulling out of the low-temperature casting blank 3 is reduced, the equipment maintenance cost is effectively reduced, the accident handling time is shortened by 7 hours compared with that of the horizontal blank, the standby operation can be performed after the casting blank 3 is pulled out, the accident loss is reduced, the operation rate is ensured, the service life of the casting blank 3 of the sector section is prolonged, and the roll gap precision is ensured.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features.
While specific examples have been set forth herein to illustrate the principles and embodiments of the present application, the above examples are intended to be merely illustrative of the methods and concepts underlying the application, and in general, should not be construed as limiting the application to those skilled in the art, based on the concepts of the application, as long as they vary within the scope of the embodiments and applications.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310022369.1A CN116099996B (en) | 2023-01-07 | 2023-01-07 | A method for preventing flat slabs from occurring in thin slab continuous casting machines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310022369.1A CN116099996B (en) | 2023-01-07 | 2023-01-07 | A method for preventing flat slabs from occurring in thin slab continuous casting machines |
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| Publication Number | Publication Date |
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| CN116099996A CN116099996A (en) | 2023-05-12 |
| CN116099996B true CN116099996B (en) | 2025-02-18 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252468A (en) * | 2013-06-03 | 2013-08-21 | 中冶赛迪工程技术股份有限公司 | Device and method of H-shaped parison continuous casting machine online dummy ingot |
| CN112122573A (en) * | 2020-09-15 | 2020-12-25 | 山东钢铁集团日照有限公司 | Method for preventing blank shell from being detached after bonding alarm of ultra-wide slab continuous casting machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3219161C1 (en) * | 1982-05-21 | 1983-10-20 | Mannesmann AG, 4000 Düsseldorf | Method and device for decoupling the dummy bar from the cast strand in the continuous casting of metal, especially steel |
| CN113523214B (en) * | 2021-06-18 | 2022-09-09 | 首钢集团有限公司 | A method for distributing slab drawing force for continuous casting and large reduction process |
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- 2023-01-07 CN CN202310022369.1A patent/CN116099996B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103252468A (en) * | 2013-06-03 | 2013-08-21 | 中冶赛迪工程技术股份有限公司 | Device and method of H-shaped parison continuous casting machine online dummy ingot |
| CN112122573A (en) * | 2020-09-15 | 2020-12-25 | 山东钢铁集团日照有限公司 | Method for preventing blank shell from being detached after bonding alarm of ultra-wide slab continuous casting machine |
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| CN116099996A (en) | 2023-05-12 |
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