CN111250672A - Continuous casting ladle final pouring method based on steel passing amount comparison - Google Patents
Continuous casting ladle final pouring method based on steel passing amount comparison Download PDFInfo
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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
- B22D11/183—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by measuring molten metal weight
Abstract
The invention belongs to the technical field of ferrous metallurgy continuous casting, and particularly relates to a continuous casting ladle final casting method based on steel passing amount comparison, which judges the molten steel critical height of slag formation and slagging at the last stage of a steel tapping ladle by accurately calculating theoretical steel passing amount and comparing theoretical steel passing amount with actual steel passing amount, and calculates the weight of large ladle molten steel required by a control sliding plate so as to calculate the starting point of starting to control the sliding plate at the last stage; and finally, the opening degree of the steel ladle slide plate mechanism is judged by calculating the comparison of the steel passing amounts of the steel ladle and the tundish, so that the opening degree is controlled by a feedback control slide plate, the formation of slag vortex in the last pouring stage of the steel ladle is delayed, and the purposes of reducing the steel ladle residual steel and effectively and reasonably controlling the steel ladle slag discharging are finally realized.
Description
Technical Field
The invention belongs to the technical field of ferrous metallurgy continuous casting, and particularly relates to a continuous casting ladle final casting method based on steel flux comparison.
Background
In the current continuous casting production process in the steel industry, molten steel is poured into a tundish from a ladle, then the tundish is distributed to a crystallizer, and finally the molten steel is solidified and crystallized by the crystallizer and is cast into a casting blank by drawing. In the process of flowing the molten steel into the tundish from the ladle, when the pouring is finished, the steel slag in the ladle can be mixed with the molten steel and flows into the tundish through the long nozzle to form slag. In order to reduce the influence caused by the slag discharging from the steel ladle, the existing continuous casting process adopts a manual or automatic slag discharging detection means to judge the occurrence of the steel slag when the steel ladle is finally cast, and closes the sliding water gap in time to finish the casting. But a large amount of pure molten steel is remained in the ladle at the moment, which causes great waste of resources. The reason why a large amount of molten steel remains in the ladle after the pouring of the ladle is finished is that the molten steel generates rotary motion in the ladle at the middle and later pouring stages to form vortex to cause slag entrapment. The sliding plate is closed in order to reduce the entrainment of the steel ladle slag, and finally, the residual steel of the steel ladle is remained in the steel ladle during final pouring, so that waste is caused.
Aiming at the problem that vortex adsorption slag entrainment exists in the middle and later pouring stages of a continuous casting ladle, how to reduce the critical height of the ladle in the last stage to the maximum extent so as to reduce the residual steel of the ladle and simultaneously prevent the slag entrainment of the ladle slag from flowing into a continuous casting tundish, and continuous casting process workers are always intensively researched and solved. At present, there are some methods to inhibit slag entrapment and reduce the steel ladle residual steel: for example, the ladle inclined pouring method is that the whole ladle is inclined for a certain angle at the later period of ladle pouring, so that the molten steel is deflected to one side, the height of the molten steel is increased, and more molten steel is reserved; for example, the ladle slag dam technology is characterized in that a plurality of raised slag dams are arranged at the bottom of a ladle, so that the later flowing speed of molten steel is reduced, and the slag entrapment phenomenon is weakened. However, these methods are not ideal in practical use. The method generally used at present depends on the existing slag discharge detection technology, and reduces the slag entrapment and the steel ladle residual steel by a method of secondarily controlling a plate or driving an electromagnetic force braking device to generate disturbance force opposite to the direction of steel flow. However, if the methods are not realized by installing the electromagnetic slag-off detection system at the bottom of the ladle, the effective reduction of the residual steel amount and the control of the slag-off amount during the final casting of the continuous casting ladle can be well realized without changing the shape of the bottom of the ladle and increasing the electromagnetic slag-off detection equipment, and no relevant technology and literature are reported at present.
The control method and the device for restraining the slag entrapment at the final pouring stage of the continuous casting ladle disclosed by the Chinese patent CN 201610942959.6 and the final casting method of the continuous casting ladle based on the secondary alarm of the slag tapping detection system disclosed by the Chinese patent CN 201711200013.3 both depend on the control of the residual steel amount and the control of the slag tapping amount which are carried out by the slag tapping detection system arranged at the bottom of the ladle. Chinese patent CN 201710845659.0 discloses a method for increasing the yield of continuous casting molten steel, which mentions that the sliding plate is closed at the moment of slag tapping at the final stage of pouring, and the process is repeated several times to reduce the amount of steel remaining in the ladle. However, as is well known, since the slide plate is closed immediately after the final pouring, the reaction time of the system and the delay of the slide plate closing speed certainly cause the ladle slag to flow into the tundish, and the ladle slag in the tundish is increased after repeating the steps for several times, the method finally has to provide a slag overflow groove in the tundish for slag removal. The current continuous casting requires the production of high quality, high purity continuous casting billets, and the long-term high slag content in the tundish is obviously not desirable, so the method is rarely used on site. The only proposal for carrying out sliding plate control in advance by utilizing the steel passing amount and the molten steel weight to reduce the slag dropping at the final stage of pouring is a continuous casting ladle final pouring control system and a process control method based on a ladle slag dropping detection system with the application number of CN 201510091824; however, the method only discloses and relates to the method which needs to control the opening of the sliding plate and the weight of the tundish to optimize the final casting method and delay the vortex formation at the bottom of the ladle so as to reduce the residual steel of the ladle. However, the method calculates the tonnage of the tundish in front of the control slide plate and accurately calculates and judges the critical height formed by the slag vortex of the ladle, and the concrete control method of the slide plate is not mentioned and disclosed. The method for controlling the average opening degree of the sliding nozzle and controlling the sliding nozzle to reach the target opening degree according to the steel passing speed cannot be realized in the field practical application under the condition of not increasing the position sensor of the opening degree of the sliding plate.
In view of the requirements of high purity of molten steel and yield index of the current continuous casting, a method for effectively reducing the critical height of molten steel of a steel ladle, reducing the residual steel of the steel ladle and controlling the slag discharging of the steel ladle during the final casting of a continuous casting ladle without greatly increasing equipment investment is urgently needed.
Disclosure of Invention
The invention solves the technical problems in the prior art and provides a continuous casting ladle final casting method based on steel flux comparison.
In order to solve the problems, the technical scheme of the invention is as follows:
a continuous casting ladle final pouring method based on steel passing amount comparison comprises the following steps:
step 1, calculating theoretical steel passing amount of a steel ladle sliding plate in a fully-opened state, collecting actual steel passing amount data, comparing the theoretical steel passing amount with the actual steel passing amount, judging that molten steel in a steel ladle starts generating vortex when the actual steel passing amount is smaller than the theoretical steel passing amount, determining a critical height H value, and recording steel ladle molten steel weight T corresponding to the critical height H valueFace；
Step 2, calculating the weight of the ladle molten steel required by the control slide plate, collecting the real-time molten steel weight of the ladle, and calculating the weight T of the ladle starting to control the slide plateStart of：
TStart of＝T+(THeight of－TIs normal)
Wherein T is the weight required for controlling the skateboard,
Tis normalThe tonnage of the tundish is normal,
Theight ofThe highest tonnage of the tundish;
step 3, if TStart of＞TFaceWhen the weight of the ladle reaches TStart ofWhen the opening degree of a sliding plate of the ladle mechanism is controlled to be opened to the maximum; if TStart of≤TFaceWhen the weight of the ladle reaches TFaceWhen the opening degree of a sliding plate of the ladle mechanism is controlled to be opened to the maximum;
step 4, collecting the tonnage of the tundish, wherein the tonnage T of the tundish is collectedIntermediate (II)＝THeight ofIn time, the opening of the sliding plate is controlled to ensure that the steel passing amount Q of the ladle is increasedldEqual to the steel passing quantity Q of the crystallizercc
Step 5, when the weight of the molten steel in the steel ladle is equal to 1/2TStart ofDuring the process, the opening degree of the sliding plate mechanism is controlled to ensure that the steel passing amount of the crystallizer is equal to 2 times of the steel passing amount of the large ladle molten steel, the aim is to reduce the opening degree of the sliding plate, delay the formation of slag vortex during the ladle pouring, and ensure that Q is equal tocc＝2Qld；
And 6, controlling a sliding plate mechanism to close the sliding plate after the ladle slag is found.
Preferably, the calculation formula of the theoretical steel passing amount of the ladle sliding plate in the fully opened state in the step 1 is as follows:
where ρ is the molten steel density, A1Is the area of the liquid level of the steel ladle, A2The area of the liquid level of a ladle nozzle and the height h of the liquid level of the ladle are shown.
Preferably, the calculation formula of the weight T required for controlling the skateboard in step 2 is as follows:
T＝Theight of－TIs low in－(A*Qcc)
Wherein, TIs normalThe tonnage of the tundish is normal,
Theight ofThe highest tonnage of the tundish;
a is a normal process interval time parameter for replacing the steel ladle;
Qccthe steel feeding amount of the crystallizer.
Preferably, the steel passing amount Q of the crystallizerccThe calculation formula of (1) is crystallizer width, crystallizer thickness, pulling speed and molten steel density and flow number.
Preferably, the opening degree of the sliding plate is controlled in the step 4, so that the steel passing amount Q of the bale is controlledldEqual to the steel passing quantity Q of the crystallizerccThe specific method comprises the following steps: collecting the weight of the molten steel in the ladle in any 4 seconds, and calculating the steel passing amount Q of the large ladleld(ii) a Controlling the opening of the slide plate of the ladle mechanism to ensure Qld＝QccIf Q isld＞QccThen decrease the opening of the slide plate, if Qld＜QccThe opening of the slide plate is increased.
Preferably, the step 6 judges whether the ladle is slagging through manual observation or detection equipment.
Compared with the prior art, the invention has the advantages that,
by utilizing the continuous casting ladle final pouring method based on steel passing amount comparison, the critical height of molten steel for forming slag by vortex at the last stage of a steel tapping ladle can be judged through accurate calculation under the condition that no equipment investment is increased, and the starting point of starting to control the sliding plate at the last stage is calculated according to the critical height; and finally, the opening degree of the steel ladle slide plate mechanism is judged by calculating the comparison of the steel passing amounts of the steel ladle and the tundish, so that the opening degree is controlled by a feedback control slide plate, the formation of slag vortex in the last pouring stage of the steel ladle is delayed, and the purposes of reducing the steel ladle residual steel and effectively and reasonably controlling the steel ladle slag discharging are finally realized.
In 2018, since the applicant utilizes the method to control the final casting of the steel ladle, the average large-ladle residual steel can be controlled to be 2.5 tons to 3.5 tons, the yield of the continuous casting billet is increased from 97.85% to 98.02%, and meanwhile, the average middle-ladle slag thickness is less than 50mm by effectively controlling the slag discharging of the steel ladle; the abnormal erosion times of the continuous casting tundish refractory material is 0; good effects are achieved from both economic benefits and stable control of the production process.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of calculation of theoretical steel passing amount in a fully-opened state of a ladle sliding plate.
Detailed Description
For the purposes of promoting an understanding and appreciation of the invention, the invention will be further elucidated with reference to the accompanying figures 1-2 and detailed description.
Example 1:
a continuous casting ladle final casting method based on steel flux comparison is implemented according to the following steps:
1. equipment parameter confirmation before final casting method control
1.1 the equipment included in the technical proposal comprises a steel ladle, a steel ladle sliding plate, a hydraulic oil cylinder for controlling the sliding plate mechanism, a tundish, a double-flow crystallizer and the like;
1.2, collecting and confirming the information of the pouring state of the steel ladle at a pouring position, casting machine pulling speed information and tundish weight information;
1.3, collecting and confirming the state information of a hydraulic cylinder of a steel ladle slide plate mechanism;
1.4 collecting the weight of the tundish, the section size of the crystallizer is 1200mm x 230mm, and the pulling speed is 1.2m/min for confirmation;
acquiring data of more than 1.5, operating normally, and carrying out next optimization control;
2. process parameter confirmation before final casting method control
2.1 confirming the normal tundish tonnage T required by the processIs normal60 tons, lowest tundish tonnage (weight) technological parameter TIs low inAnd 40 tons, the highest tonnage (weight) technological parameter T of the tundishHeight ofIs 70 tons;
2.2, confirming that the normal process interval time parameter A of the steel ladle replacement (from the end of the pouring of the old steel ladle to the opening of the new steel ladle) is 2 min;
2.3 accurate calculation and judgment of critical height of molten steel in ladle
2.3.1 collecting ladle liquid level area A1Ladle nozzle liquid level area A2The parameters such as the height h of the liquid level of the steel ladle, the density of the molten steel and the like are shown in a table 1, and the theoretical steel passing amounts of different heights of the steel ladle sliding plate in the fully-opened state are calculated according to a Bernoulli equation (a calculation schematic diagram of the theoretical steel passing amounts of the steel ladle sliding plate in the fully-opened state is shown in figure 2).
Ladle liquid level parameters: p1、A1、v1、δ1；
Parameters of a ladle long nozzle outlet: p2、A2、v2、δ2；
P1: ladle liquid level pressure
A1: liquid level area of steel ladle
v1: volume of ladle
δ1: reynolds number of ladle steel (fluid characteristic coefficient)
P2: liquid level pressure of tundish
A2: liquid level area of tundish
v2: intermediate volume
δ2: reynolds number of molten steel in tundish (fluid characteristic coefficient)
The relationship between the two is as follows:
1)δ1-δ2＝h+h1
2)P1＝P2-ρgh1＝P0(ii) a In the formula P0Is at atmospheric pressure
3)v1A1＝v2A2
From bernoulli's equation:
substituting the relation between the ladle liquid level and the long nozzle outlet parameter, and finishing to obtain:
the flow of the ladle nozzle is as follows:
TABLE 1
| Symbol | Data of | Description of the invention | Unit of |
| P | 7 | Density of molten steel | t/m3 |
| A1 | 9.61625 | Liquid level area of steel ladle | m2 |
| A2 | 0.005671625 | Liquid level area of ladle nozzle | m2 |
| g | 9.8 | Acceleration of gravity | m/s2 |
2.3.2, acquiring the actual tonnage reduction weight and time on site, and collecting actual steel passing amount data;
2.3.3, comparing the theoretical steel flux with the actual steel flux, and judging that molten steel in the ladle starts to generate a vortex when the actual steel flux is smaller than the theoretical steel flux, and determining the critical height H value, which is shown in Table 2;
table 2: comparison of steel passing amount
2.3.4 recording the weight T of the steel ladle molten steel corresponding to the critical height H valueFaceIs 20 tons;
3. control flow of final pouring method
3.1 calculating the weight of the ladle molten steel required by the control slide plate according to the process parameters;
3.1.1 calculating the steel passing amount Q of the crystallizercc5.03 tons (crystallizer width 1200mm crystallizer thickness 230mm casting speed 1.2m/min molten steel density 7 t/m)3Number of streams 2);
3.1.2 calculate the weight T of the ladle steel needed to control the slide plateHeight of－TIs low in－(A*Qcc) (ii) a T is 19.94 tons
3.2, collecting the weight of the real-time molten steel of the large ladle;
3.3 calculate the ladle weight T of the initial control slideStart of
The weight of the steel ladle for controlling the slide plate is equal to the weight T required by controlling the slide plate plus the tonnage T of the normal tundishIs normalAnd maximum tonnage THeight ofThe difference of (a). Namely TStart of＝T+(THeight of－TIs normal) 19.94+ (70-60) ═ 29.94 tons;
3.4 comparing the calculated ladle weight T of the initial control slide plateStart ofAnd TFace29.94 > 20, i.e. satisfies TStart of＞TFaceIf T is calculatedStart ofAnd if the tonnage of the bale is less than or equal to 20 tons, the opening degree of the sliding plate is controlled when the tonnage of the bale is close to 20 tons.
3.5 when the weight of the ladle reaches 29.94 tons, controlling the opening of a sliding plate of the ladle mechanism to be opened to the maximum;
3.6 collecting the tonnage of the tundish and the tonnage T of the tundishIntermediate (II)＝THeight ofWhen is, i.e. TIntermediate (II)Controlling the opening degree of the sliding plate to be reduced when the weight is 70 tons;
3.7 the weight of the steel ladle molten steel 4 seconds before and after the collection is calculated to obtain the steel passing quantity Q of the large ladleldIs 6.67 tons
3.8 controlling the opening of the slide plate of the ladle mechanism to ensure that Q is equal to Qld＝QccIf Q isld＞QccThen decrease the opening of the slide plate, if Qld＜QccIncreasing the opening degree of the sliding plate;
3.9 when the weight of the molten steel in the steel ladle is equal to 1/2TStart ofWhen the steel is poured, namely 14.97 tons, the opening degree of a sliding plate mechanism is controlled, the steel passing amount of the molten steel in the tundish is equal to 2 times of the steel passing amount of the molten steel in the large ladle, the aim is to reduce the opening degree of the sliding plate, delay the formation of slag vortex in the pouring of the ladle and ensure that Q is equal tocc＝2Qld；
3.10 manually observing or judging by other detection means, and controlling the sliding plate mechanism to close the sliding plate after the slag is discharged from the steel ladle;
4. and finishing the flow of the final pouring control method.
By the method, the average large ladle residual steel can be controlled to be 2.5 tons to 3.5 tons, the continuous casting billet yield is 98.02 percent, and the average middle ladle slag thickness is less than 50 mm.
Comparative example 1:
the method of example 1 is different in that:
3.4 if the weight T of the steel ladle for starting to control the sliding plate is calculatedStart ofIs 18.5 tons, TFaceOr 20 tons, i.e. T is satisfiedStart of＜TFaceNot controlled according to the method;
3.5 when the weight of the steel ladle reaches 18.5 tons, controlling the opening of a sliding plate of the steel ladle mechanism to be opened to the maximum;
3.6 collecting the tonnage of the tundish, wherein the tonnage T of the tundish is equal to THeight ofWhen the opening of the sliding plate begins to be reduced (the weight of the ladle is reduced by 10 tons at the moment, and the actual weight is 8.5 tons);
3.7 collecting the weight of the steel ladle molten steel in any 4 seconds, and calculating the steel passing amount Q of the large ladleldIs 6.67 tons
3.8 controlling the opening of the slide plate of the ladle mechanism to ensure that Q is equal to Qld＝QccIf Q isld＞QccThen decrease the opening of the slide plate, if Qld＜QccIncreasing the opening degree of the sliding plate;
3.9 since the weight of the ladle is only 8.5 tons, the weight of the molten steel in the ladle equal to 1/2T cannot be realizedStart ofUnder the condition, the opening degree of the sliding plate mechanism cannot be controlled, the steel passing amount of the molten steel in the tundish is equal to 2 times of that of the molten steel in the large ladle, and Q cannot be controlledcc＝2QldAnd the opening of the sliding plate is reduced, and the formation of slag vortex during ladle pouring is delayed.
3.10 at this time, because the opening of the sliding plate is larger, the vortex is formed too early, the steel ladle is slagged, and the sliding plate is closed according to the process requirements.
According to the furnace data of the comparative example 20, the average large-package residual steel is controlled to be 4.5 tons to 5.5 tons, and the continuous casting billet yield is 97.25 percent and is far less than the yield index after the implementation of the method provided by the example 1.
Comparative example 2:
the method of example 1 is different in that:
3.9 when the weight of the molten steel in the steel ladle is equal to 1/2TStart ofAt this time, i.e., 14.97 tons, the opening of the slide mechanism was controlled so that the amount of molten steel passing through the tundish was greater than or less than 2 times the amount of molten steel passing through the tundish (i.e., Q was not shown in example 1)cc＝2QldTo control the opening of the slide), i.e., let Qcc＞2Qld，Or let Qcc＜2QldThe data for each 10 furnaces was tracked for comparison as follows:
according to the comparison scheme, the opening degree of the sliding plate mechanism is controlled not according to the embodiment, the steel passing amount of the molten steel in the tundish is equal to 2 times of the steel passing amount of the molten steel in the large ladle, and Q is enabled to be equal to the steel passing amount of the molten steel in the large ladlecc＝2Qld；
Scheme Qcc＞2QldThe steel ladle residual steel is normal, and the thickness of single tundish slag is 105 mm; the normal range is obviously higher, and the service life of the refractory of the tundish and the purity of molten steel in the tundish are seriously influenced;
scheme Qcc＜2QldThe residual steel of the steel ladle is obviously excessive and exceeds 5 tons on average, so that the yield can only be maintained at the level of 97.23 percent and is far less than the yield index after the implementation of the method provided by the scheme.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and all equivalent substitutions or substitutions made on the above-mentioned embodiments are included in the scope of the present invention.
Claims (6)
1. A continuous casting ladle final casting method based on steel passing amount comparison is characterized by comprising the following steps:
step 1, calculating theoretical steel passing amount of a steel ladle sliding plate in a fully-opened state, collecting actual steel passing amount data, comparing the theoretical steel passing amount with the actual steel passing amount, judging that molten steel in a steel ladle starts generating vortex when the actual steel passing amount is smaller than the theoretical steel passing amount, determining a critical height H value, and recording steel ladle molten steel weight T corresponding to the critical height H valueFace；
Step 2, calculating the weight of the ladle molten steel required by the control slide plate, collecting the real-time molten steel weight of the ladle, and calculating the weight T of the ladle starting to control the slide plateStart of：
TStart of＝T+(THeight of－TIs normal)
Wherein T is the weight required for controlling the skateboard,
Tis normalThe tonnage of the tundish is normal,
Theight ofThe highest tonnage of the tundish;
step 3, if TStart of＞TFaceWhen the weight of the ladle reaches TStart ofWhen the opening degree of a sliding plate of the ladle mechanism is controlled to be opened to the maximum; if TStart of≤TFaceWhen the weight of the ladle reaches TFaceWhen the opening degree of a sliding plate of the ladle mechanism is controlled to be opened to the maximum;
step 4, collecting the tonnage of the tundish, wherein the tonnage T of the tundish is collectedIntermediate (II)＝THeight ofIn time, the opening of the sliding plate is controlled to ensure that the steel passing amount Q of the ladle is increasedldEqual to the steel passing quantity Q of the crystallizercc
Step 5, when the weight of the molten steel in the steel ladle is equal to 1/2TStart ofDuring the process, the opening degree of the sliding plate mechanism is controlled to ensure that the steel passing amount of the crystallizer is equal to 2 times of the steel passing amount of the large ladle molten steel, the aim is to reduce the opening degree of the sliding plate, delay the formation of slag vortex during the ladle pouring, and ensure that Q is equal tocc＝2Qld；
And 6, controlling a sliding plate mechanism to close the sliding plate after the ladle slag is found.
2. The continuous casting ladle final casting method based on steel flux comparison as claimed in claim 1, wherein the calculation formula of the theoretical steel flux in the fully open state of the ladle slide plate in the step 1 is as follows:
where ρ is the molten steel density, A1Is the area of the liquid level of the steel ladle, A2Is the area of the liquid level of a ladle nozzle, and h is the liquid level of the ladleHeight.
3. The continuous casting ladle final casting method based on the steel flux comparison as claimed in claim 1, wherein the calculation formula of the weight T required for controlling the slide plate in step 2 is:
T＝Theight of－TIs low in－(A*Qcc)
Wherein, TIs normalThe tonnage of the tundish is normal,
Theight ofThe highest tonnage of the tundish;
a is a normal process interval time parameter for replacing the steel ladle;
Qccthe steel feeding amount of the crystallizer.
4. The continuous casting ladle final pouring method based on steel passing amount comparison according to claim 1, wherein the steel passing amount Q of the crystallizerccThe calculation formula of (1) is crystallizer width, crystallizer thickness, pulling speed and molten steel density and flow number.
5. The continuous casting ladle final casting method based on steel flux comparison according to claim 1, wherein the opening of the slide plate is controlled in the step 4 so that the steel flux Q of the ladle is largeldEqual to the steel passing quantity Q of the crystallizerccThe specific method comprises the following steps: collecting the weight of the molten steel in the ladle in any 4 seconds, and calculating the steel passing amount Q of the large ladleld(ii) a Controlling the opening of the slide plate of the ladle mechanism to ensure Qld＝QccIf Q isld＞QccThen decrease the opening of the slide plate, if Qld＜QccThe opening of the slide plate is increased.
6. The continuous casting ladle final casting method based on steel flux comparison according to claim 1, wherein the step 6 judges whether the ladle is slagging by manual observation or detection equipment.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112620602A (en) * | 2020-12-11 | 2021-04-09 | 北京首钢股份有限公司 | Method and device for controlling steel ladle residual steel amount and storage medium |
| CN112620601A (en) * | 2020-11-23 | 2021-04-09 | 首钢集团有限公司 | Argon control method and device in casting process |
| CN115138832A (en) * | 2021-03-29 | 2022-10-04 | 宝山钢铁股份有限公司 | Method for prolonging number of pure steel pouring furnaces based on molten steel weight information |
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| CN112620601A (en) * | 2020-11-23 | 2021-04-09 | 首钢集团有限公司 | Argon control method and device in casting process |
| CN112620601B (en) * | 2020-11-23 | 2022-09-27 | 首钢集团有限公司 | Argon control method and device in casting process |
| CN112620602A (en) * | 2020-12-11 | 2021-04-09 | 北京首钢股份有限公司 | Method and device for controlling steel ladle residual steel amount and storage medium |
| CN115138832A (en) * | 2021-03-29 | 2022-10-04 | 宝山钢铁股份有限公司 | Method for prolonging number of pure steel pouring furnaces based on molten steel weight information |
| CN115138832B (en) * | 2021-03-29 | 2024-01-09 | 宝山钢铁股份有限公司 | Method for prolonging number of pure steel pouring furnaces based on molten steel weight information |
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