CN108372279A - A kind of continuous casting process tundish pours the measurement method of surplus - Google Patents
A kind of continuous casting process tundish pours the measurement method of surplus Download PDFInfo
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- CN108372279A CN108372279A CN201810328871.4A CN201810328871A CN108372279A CN 108372279 A CN108372279 A CN 108372279A CN 201810328871 A CN201810328871 A CN 201810328871A CN 108372279 A CN108372279 A CN 108372279A
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- slag
- tundish
- bloom
- surplus
- continuous casting
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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
- B22D11/10—Supplying or treating molten metal
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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
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
A kind of continuous casting process tundish pours the measurement method of surplus, belongs to continuous casting process area；Method is：1) it after continuous casting one pours time, measures when pouring basket liquid level depth is 200~350mm and stops basket pouring；2) by tundish natural cooling；3) tundish is transferred to cinder field after cooling；4) slag of solidification is all poured out and is stood in cinder field；5) cooled down to slag artificial recharge in tundish by the way of water cooling, then natural cooling；6) by the slag crushing after water cooling, and after carrying out comprehensive artificial recharge cooling to bloom, blocky slag, then natural cooling；7) after moisture air-dries, the bloom broken off in slag is all sucked out, the quality of bloom is that tundish pours surplus；The method of the present invention can fast and effeciently by a series of operation of systems to tundish pour surplus carry out precise, and it is at low cost, easy to operate, measurement result is accurate.
Description
Technical field
The invention belongs to the measurements that continuous casting process area more particularly to a kind of continuous casting process tundish pour surplus
Method.
Background technology
Tundish is the device that molten steel transition is used between ladle and crystallizer, and tundish bears the steel of Con casting ladle inflow
The effects that plaing a part of to form a connecting link after water, playing decompression, current stabilization, remove slag, shunt.Tundish is not only one in producing
Container, and have become an important ring for clean steel production.No matter the direct motion for continuous casting operation, or for ensure molten steel matter
Amount suits the requirements, and the effect of tundish all be can not ignore.
In continuous casting, the slag of basket pouring process control be always perplex economic clean steel production problem it
One.After continuous casting process pours time the last one ladle to one stops cast, molten steel liquid level is gradually reduced in tundish, under
Drop process easy tos produce slag, and harm mainly has：It generates field trash and deteriorates steel quality, be easy to cause nozzle blocking；It is intermediate
Cinder inclusion can enter in crystallizer, not only reduce cleanliness, and easily induce bleed-out.Generally steel is stayed to grasp using tundish at present
Make to inhibit tundish slag, though meeting quality requirement in this way, can cause in tundish more than a large amount of molten steel pour, to reduce steel
Water recovery rate.Therefore, how to take what new process reduced tundish to greatest extent under the premise of avoiding slag to pour surplus, be
Realize basket pouring processing efficient, economic control slag key.Research and development control slag new process very the key link
It obtains the accurate of tundish and pours surplus, the slag control effect of new process could be evaluated in this way.Therefore, tundish pours remaining
The accurate of amount measures the key for becoming control slag effect assessment.
Tundish pours surplus there are no clear, system measurement method at present, limits and controls the new work of slag to tundish
The evaluation of skill effect, the present invention propose a kind of method that quantitative measurment tundish pours surplus, systematically solve quantitative measurment
The technical barrier for pouring surplus of tundish, and it is at low cost, easy to operate, measurement result is accurate, to high-quality continuous casting process
It reduces tundish and pours surplus, and then it is significant to improve molten steel recovery rate.
Invention content
In view of the deficiencies of the prior art, the present invention proposes that a kind of continuous casting process tundish pours the measurement method of surplus,
A kind of method for quantitative measuring of steel in slag steel, can fast and effeciently by a series of operation of systems to tundish pour surplus into
Row precise, and it is at low cost, easy to operate, measurement result is accurate.Currently, to tundish pour surplus there is no it is clear, system
Measurement method, the method for the present invention solve this technical problem.
A kind of continuous casting process tundish pours the measurement method of surplus, specifically comprises the following steps：
Step 1, after continuous casting one pours the secondary stopping cast to the last one ladle, measuring pouring basket liquid level depth is
Stop basket pouring when 200~350mm；
Step 2, tundish car is opened to the side of continuous casting platform and carries out natural cooling；
Step 3, tundish is sling to rail travel vehicle by the driving in steel mill after cooling, then will by rail travel vehicle
Tundish transports to cinder field；
Step 4, the slag of solidification is all poured out into 20~45m in cinder field2Reserved area, stand 20~40min；
Step 5, cooled down to slag artificial recharge in tundish by the way of water cooling, then 40~60min of natural cooling；Its
In, the bore of water pipe is 25~40mm of Φ, 8.0~12.0m of flow3/h；
Step 6, by the slag after water cooling, it is broken into bloom and the blocky slag of the length of side≤250mm, and to bloom, blocky slag
After carrying out comprehensive artificial recharge cooling, then 1.5~3.0h of natural cooling；Wherein, the bore of water pipe is 25~40mm of Φ, stream
Measure 5.0~10.0m3/h；
Step 7, after the moisture in bloom, blocky slag air-dries, the bloom broken off in slag is all inhaled with lifting magnet
Go out, the quality of bloom is that tundish pours surplus.
A kind of above-mentioned continuous casting process tundish pours the measurement method of surplus, wherein：
In the step 1, continuous casting one, which pours last secondary packet, to complete cast according to normal cast flow.
In the step 1, with tape measure pouring basket liquid level depth；Wherein, scale for special heat-resisting material makes and
At the graduated scale of band, size：Long L is 20~50mm, wide W is 10~30mm, high H is 1500~2000mm.
In the step 1, when measuring level in tundish, scale should measure vertical high perpendicular to tundish bottom
Degree.
In the step 1, steel grade, heat (batch) number and the time in tundish are recorded.
In the step 2, it is specified that the side of continuous casting platform refers to that tundish car reaches on the track of teeming stage
Cooling position.
In the step 2, the time of natural cooling is 3.0~5.0h.
In the step 3, tundish should slowly transport to ensure safety during being transferred to cinder field.
In the step 4,180 degree is overturn after slinging tundish by package turning mechanism, the slag of solidification is all poured out
In cinder field.
In the step 5, comprehensive artificial recharge should equably water in all directions when cooling down, lasting watering cooling.
In the step 5, the time that artificial recharge cools down when cooling down is 2.0~4.0h.
In the step 6, using quartering hammer carefully by slag crushing at bulk.
In the step 6, comprehensive artificial recharge should equably water in all directions when cooling down, lasting watering cooling.
In the step 6, the time that artificial recharge cools down when cooling down is 2.0~3.0h.
In the step 6, block-like slag should be small as possible to ensure without bloom in slag when being crushed, and will be adsorbed on bloom
Blocky slag is washed out with water, and then continues to cool down to bloom and blocky slag, starts to weigh again later until bloom is completely cooling.
In the step 7, should carefully it be collected when collecting bloom with lifting magnet, size block is intended to collect complete.
In the step 7, the quality method for weighing bloom is：(1) with lifting magnet by the bloom broken off in slag all
After suction, it is put into loading machine, it is to be weighed before loading machine is opened to on-ground weigher；(2) on-ground weigher is corrected and is reset, fill the loading of bloom
Machine weighs on on-ground weigher and is denoted as A1, is re-weighed after bloom is outwelled and is denoted as A2, the difference of the two is the quality of bloom, i.e.,
This collection tundish pours surplus.
In the step 7, with on-ground weigher weigh record when, record registration stablize after actual value.
Description of the drawings
The quantitative measurment tundish of Fig. 1 embodiment of the present invention 1~3 pours the flow chart of surplus.
The apparatus structure schematic diagram of the tundish water filling cooling of Fig. 2 embodiment of the present invention 1~3；In figure, 1, filling pipe；
2, control switch；3, pressure gauge；4, flowmeter.
The apparatus structure schematic diagram of molten steel depth in the tape measure tundish of Fig. 3 embodiment of the present invention 1~3.In figure, 5,
Scale；6, tundish；7, slag blanket；8, molten steel.
The scale schematic diagram of Fig. 4 embodiment of the present invention 1~3；In figure, H represents the height of scale, and the unit of scale is mm.
The scale vertical view of Fig. 5 embodiment of the present invention 1~3；In figure, L represents the length of scale, and W represents the width of scale,
The unit of scale is mm.
Specific implementation mode
In following embodiment, with on-ground weigher weigh record when, record registration stablize after actual value.Examples 1 to 3
The flow chart that quantitative measurment tundish pours surplus is as shown in Figure 1；The apparatus structure of the tundish water filling cooling of Examples 1 to 3 shows
It is intended to as shown in Figure 2；The apparatus structure schematic diagram of molten steel depth is as shown in Figure 3 in the tape measure tundish of Examples 1 to 3；
The scale schematic diagram of Examples 1 to 3 is as shown in Figure 4；The scale vertical view of Examples 1 to 3 is as shown in Figure 5.
Embodiment 1
A kind of continuous casting process tundish pours the measurement method of surplus, specifically comprises the following steps：
Step 1, it is deep with tape measure pouring basket liquid level after continuous casting one pours the secondary stopping cast to the last one ladle
Stop basket pouring when degree is to 200mm, wherein the capacity of tundish is 30t；Wherein, scale size：Long L is 20mm, width W
It is 1500mm for 10mm, high H；
Step 2, tundish car is opened to the side of continuous casting platform and carries out natural cooling 3.0h；
Step 3, tundish is sling to rail travel vehicle by the driving in steel mill after cooling, then will by rail travel vehicle
Tundish carefully slowly transports to cinder field；
Step 4,180 degree is overturn after slinging tundish using package turning mechanism, and the slag of solidification is all poured out in cinder field
Interior 20m2Reserved area, stand 20min；
Step 5, cooled down to molten steel artificial recharge in tundish by the way of water cooling, then natural cooling 40min；Wherein,
The bore of water pipe is Φ 25mm, flow 8.0m3/h；The time that artificial recharge cools down when cooling down is 2.0h；Comprehensive artificial note
Water should equably water in all directions when cooling down, lasting watering cooling；
Step 6, by the slag after water cooling, quartering hammer is carefully by slag crushing at the blocky slag of the length of side≤250mm, and to steel
After block, blocky slag carry out comprehensive artificial recharge cooling, then natural cooling 1.5h；Wherein, the bore of water pipe is Φ 25mm, stream
Measure 5.0m3/h；The time that artificial recharge cools down when cooling down is 2.0h；Block-like slag should be small as possible when broken, and will be adsorbed on
Blocky slag on bloom is washed out with water, and then continues to cool down to bloom；
Step 7, after the moisture in bloom, blocky slag air-dries, with lifting magnet by the bloom broken off in slag and block
After bloom in shape slag is all sucked out, it is put into loading machine, it is to be weighed before loading machine is opened to on-ground weigher, on-ground weigher is corrected and is reset, is contained
There is the loading machine of bloom to weigh on on-ground weigher and be denoted as 18.25t, is re-weighed after bloom is outwelled and is denoted as 16.40t, the two
Difference is the quality 1.85t of bloom, i.e. the surplus of pouring of tundish is 1.85t.
If do not used the continuous casting process tundish of the present embodiment to pour the measurement method of surplus, scene is estimated tundish and is poured
Surplus empirical value is 2.30t, and it is 1.85t that the tundish of measurement method, which pours surplus, through this embodiment, it is seen that the method for the present invention is more
It is accurate for science.
Embodiment 2
A kind of continuous casting process tundish pours the measurement method of surplus, specifically comprises the following steps：
Step 1, it is deep with tape measure pouring basket liquid level after continuous casting one pours the secondary stopping cast to the last one ladle
Stop basket pouring when degree is to 250mm, wherein the capacity of tundish is 35t；Wherein, scale size：Long L is 35mm, width W
It is 1800mm for 20mm, high H；
Step 2, tundish car is opened to the side of continuous casting platform and carries out natural cooling 4.0h；
Step 3, tundish is sling to rail travel vehicle by the driving in steel mill after cooling, then will by rail travel vehicle
Tundish carefully slowly transports to cinder field；
Step 4,180 degree is overturn after slinging tundish using package turning mechanism, and the slag of solidification is all poured out in cinder field
Interior 30m2Reserved area, stand 30min；
Step 5, cooled down to molten steel artificial recharge in tundish by the way of water cooling, then natural cooling 50min；Wherein,
The bore of water pipe is Φ 35mm, flow 10.0m3/h；The time that artificial recharge cools down when cooling down is 3.0h；Comprehensive artificial note
Water should equably water in all directions when cooling down, lasting watering cooling；
Step 6, by the slag after water cooling, quartering hammer is carefully by slag crushing at the blocky slag of the length of side≤250mm, and to steel
After block, blocky slag carry out comprehensive artificial recharge cooling, then natural cooling 2.5h；Wherein, the bore of water pipe is Φ 35mm, stream
Measure 7.0m3/h；The time that artificial recharge cools down when cooling down is 2.5h；Block-like slag should be small as possible when broken, and will be adsorbed on
Blocky slag on bloom is washed out with water, and then continues to cool down to bloom；
Step 7, after the moisture in bloom, blocky slag air-dries, with lifting magnet by the bloom broken off in slag and block
After bloom in shape slag is all sucked out, it is put into loading machine, it is to be weighed before loading machine is opened to on-ground weigher, on-ground weigher is corrected and is reset, is contained
There is the loading machine of bloom to weigh on on-ground weigher and be denoted as 19.32t, is re-weighed after bloom is outwelled and is denoted as 16.60t, the two
Difference is the quality 2.72t of bloom, i.e. the surplus of pouring of tundish is 2.72t.
If do not used the continuous casting process tundish of the present embodiment to pour the measurement method of surplus, scene is estimated tundish and is poured
Surplus empirical value is 3.20t, and it is 2.72t that the tundish of measurement method, which pours surplus, through this embodiment, it is seen that the method for the present invention is more
It is accurate for science.
Embodiment 3
A kind of continuous casting process tundish pours the measurement method of surplus, specifically comprises the following steps：
Step 1, it is deep with tape measure pouring basket liquid level after continuous casting one pours the secondary stopping cast to the last one ladle
Stop basket pouring when degree is to 350mm, wherein the capacity of tundish is 40t；Wherein, scale size：Long L is 50mm, width W
It is 2000mm for 30mm, high H；
Step 2, tundish car is opened to the side of continuous casting platform and carries out natural cooling 5.0h；
Step 3, tundish is sling to rail travel vehicle by the driving in steel mill after cooling, then will by rail travel vehicle
Tundish carefully slowly transports to cinder field；
Step 4,180 degree is overturn after slinging tundish using package turning mechanism, and the slag of solidification is all poured out in cinder field
Interior 45m2Reserved area, stand 40min；
Step 5, cooled down to molten steel artificial recharge in tundish by the way of water cooling, then natural cooling 60min；Wherein,
The bore of water pipe is Φ 40mm, flow 12.0m3/h；The time that artificial recharge cools down when cooling down is 4.0h；Comprehensive artificial note
Water should equably water in all directions when cooling down, lasting watering cooling；
Step 6, by the slag after water cooling, quartering hammer is carefully by slag crushing at the blocky slag of the length of side≤250mm, and to steel
After block, blocky slag carry out comprehensive artificial recharge cooling, then natural cooling 3.0h；Wherein, the bore of water pipe is Φ 40mm, stream
Measure 10.0m3/h；The time that artificial recharge cools down when cooling down is 3.0h；Block-like slag should be small as possible when broken, and will be adsorbed on
Blocky slag on bloom is washed out with water, and then continues to cool down to bloom；
Step 7, after the moisture in bloom, blocky slag air-dries, with lifting magnet by the bloom broken off in slag and block
After bloom in shape slag is all sucked out, it is put into loading machine, it is to be weighed before loading machine is opened to on-ground weigher, on-ground weigher is corrected and is reset, is contained
There is the loading machine of bloom to weigh on on-ground weigher and be denoted as 20.74t, is re-weighed after bloom is outwelled and is denoted as 16.10t, the two
Difference is the quality 4.64t of bloom, i.e. the surplus of pouring of tundish is 4.64t.
If do not used the continuous casting process tundish of the present embodiment to pour the measurement method of surplus, scene is estimated tundish and is poured
Surplus empirical value is 5.00t, and it is 4.64t that the tundish of measurement method, which pours surplus, through this embodiment, it is seen that the method for the present invention is more
It is accurate for science.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, it will be apparent to an ordinarily skilled person in the art that the technical side of the present invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Right in.
Claims (9)
1. a kind of continuous casting process tundish pours the measurement method of surplus, which is characterized in that specifically comprise the following steps：
Step 1, continuous casting one pours time stop cast to the last one ladle after, measure pouring basket liquid level depth be 200~
Stop basket pouring when 350mm；
Step 2, tundish car is opened to the side of continuous casting platform and carries out natural cooling；
Step 3, tundish is sling to rail travel vehicle by the driving in steel mill after cooling, then will be intermediate by rail travel vehicle
Packet transports to cinder field；
Step 4, the slag of solidification is all poured out into 20~45m in cinder field2Reserved area, stand 20~40min；
Step 5, cooled down to slag artificial recharge in tundish by the way of water cooling, then 40~60min of natural cooling；Wherein,
The bore of water pipe is 25~40mm of Φ, 8.0~12.0m of flow3/h；
Step 6, by the slag after water cooling, it is broken into bloom and the blocky slag of the length of side≤250mm, and carry out to bloom, blocky slag
After comprehensive artificial recharge cooling, then 1.5~3.0h of natural cooling；Wherein, the bore of water pipe is 25~40mm of Φ, flow
5.0~10.0m3/h；
Step 7, after the moisture in bloom, blocky slag air-dries, the bloom broken off in slag is all sucked out with lifting magnet, steel
The quality of block is that tundish pours surplus.
2. continuous casting process tundish according to claim 1 pours the measurement method of surplus, which is characterized in that the step
In rapid 1, with tape measure pouring basket liquid level depth；Wherein, scale is that the band that special heat-resisting material is made is graduated
Scale, size：Long L is 20~50mm, wide W is 10~30mm, high H is 1500~2000mm.
3. continuous casting process tundish according to claim 1 pours the measurement method of surplus, which is characterized in that the step
In rapid 2, the time of natural cooling is 3.0~5.0h.
4. continuous casting process tundish according to claim 1 pours the measurement method of surplus, which is characterized in that the step
In rapid 4, after overturning 180 degree after slinging tundish by package turning mechanism, the slag of solidification is all poured out in cinder field.
5. continuous casting process tundish according to claim 1 pours the measurement method of surplus, which is characterized in that the step
In rapid 5, the time that artificial recharge cools down when cooling down is 2.0~4.0h.
6. continuous casting process tundish according to claim 1 pours the measurement method of surplus, which is characterized in that the step
In rapid 6, using quartering hammer carefully by slag crushing at bulk.
7. continuous casting process tundish according to claim 1 pours the measurement method of surplus, which is characterized in that the step
In rapid 6, the time that artificial recharge cools down when cooling down is 2.0~3.0h.
8. continuous casting process tundish according to claim 1 pours the measurement method of surplus, which is characterized in that the step
In rapid 6, block-like slag should be small as possible to ensure without bloom in slag when being crushed, and will be adsorbed on bloom blocky slag and be rushed with water
Fall, and then bloom and blocky slag are continued to cool down, starts to weigh again later until bloom is completely cooling.
9. continuous casting process tundish according to claim 1 pours the measurement method of surplus, which is characterized in that the step
In rapid 7, the quality method for weighing bloom is：(1) after the bloom broken off in slag being all sucked out with lifting magnet, it is put into loading
It is to be weighed before loading machine is opened to on-ground weigher in machine；(2) on-ground weigher is corrected and is reset, the loading machine for filling bloom is weighed on on-ground weigher
And it is denoted as A1, it is re-weighed after bloom is outwelled and is denoted as A2, the difference of the two is the quality of bloom, i.e., this collects tundish
Pour surplus.
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| CN201810328871.4A CN108372279B (en) | 2018-04-13 | 2018-04-13 | Method for measuring pouring allowance of tundish in continuous casting pouring process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523217A (en) * | 2020-04-21 | 2021-10-22 | 上海梅山钢铁股份有限公司 | Method for calibrating continuous casting ladle scale and tundish scale |
| CN114769543A (en) * | 2022-04-19 | 2022-07-22 | 重庆钢铁股份有限公司 | Method for observing liquid level height of tundish |
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| JP2013536087A (en) * | 2010-08-30 | 2013-09-19 | ヒュンダイ スチール カンパニー | Method for predicting contamination range of molten steel when changing ladle |
| CN106041011A (en) * | 2016-08-12 | 2016-10-26 | 湖南千盟物联信息技术有限公司 | Implementation method of continuous casting intermediate ladle remaining steel model |
| CN206898332U (en) * | 2017-06-26 | 2018-01-19 | 北京首钢股份有限公司 | A kind of device for the remaining measurement of slab tundish casting |
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| CN113523217A (en) * | 2020-04-21 | 2021-10-22 | 上海梅山钢铁股份有限公司 | Method for calibrating continuous casting ladle scale and tundish scale |
| CN113523217B (en) * | 2020-04-21 | 2022-09-06 | 上海梅山钢铁股份有限公司 | Method for calibrating continuous casting ladle scale and tundish scale |
| CN114769543A (en) * | 2022-04-19 | 2022-07-22 | 重庆钢铁股份有限公司 | Method for observing liquid level height of tundish |
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