CN112222368A - Method for operating butt joint and speed increasing of tundish in continuous casting of ultra-thick plate blank - Google Patents
Method for operating butt joint and speed increasing of tundish in continuous casting of ultra-thick plate blank Download PDFInfo
- Publication number
- CN112222368A CN112222368A CN202010951278.2A CN202010951278A CN112222368A CN 112222368 A CN112222368 A CN 112222368A CN 202010951278 A CN202010951278 A CN 202010951278A CN 112222368 A CN112222368 A CN 112222368A
- Authority
- CN
- China
- Prior art keywords
- tundish
- blank
- butt joint
- continuous casting
- molten steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
Abstract
The invention discloses an operation method for increasing the butt joint speed of a continuous casting tundish of an ultra-thick plate blank, which relates to the technical field of steel production, and reduces the damage to equipment caused by blank drawing and large straightening resistance due to undercooling of a casting blank in the butt joint process and the butt joint steel leakage caused by poor connection of a front blank shell and a rear blank shell due to quick butt joint speed increase on the premise of ensuring the smooth butt joint of the continuous casting tundish, thereby improving the continuous casting butt joint stability of the ultra-thick plate blank to the maximum extent, and achieving the aims of stable and high yield of a continuous casting machine and reduction of production cost.
Description
Technical Field
The invention relates to the technical field of steel production, in particular to a method for operating the butt joint and the speed increase of a continuous casting tundish of an ultra-thick plate blank.
Background
The high-efficiency continuous casting process becomes an economic and reasonable production process in the metallurgical field at home and abroad. The number of continuous casting furnaces plays a decisive role in the production efficiency and the product cost of a continuous casting machine, the number of continuous casting furnaces is increased, the operation rate of the continuous casting machine can be increased, the metal yield can be increased, and the consumption of raw materials and the cost of casting blanks can be reduced. In addition, the multi-furnace continuous casting is also a necessary condition for hot charging and hot delivery of casting blanks and direct rolling. In order to realize multi-furnace continuous casting, tundish quick change, namely butt joint (hot change) is mostly adopted in the current continuous casting production.
Because of the high-temperature erosion scouring action of molten steel and slag, the refractory material of the tundish needs to be replaced by stopping the machine or butt-jointed and heat-exchanged without stopping the machine when the service life of the refractory material reaches a certain service life, or the tundish needs to be replaced by a production plan organization, the butt-jointed and heat-exchanged tundish without stopping the machine is adopted, so that the continuous production of a continuous casting machine can improve the operation rate of the casting machine and reduce the production preparation time.
The slab with the thickness of more than 260mm is thicker than the thickness of a common medium plate continuous casting machine, although the butt joint operation process is basically the same, the butt joint operation process needs more time for solidification of the slab to achieve the stable connection of front and rear billets, and the condition that the slab is discharged out of a crystallizer due to the separation of the solidified and badly connected billets after starting, so that huge economic loss is caused, and great difficulty is brought to production operation.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for operating the butt joint and the speed increase of a continuous casting tundish of an ultra-thick plate blank, which comprises the following steps:
butt joint of tundish
S1, after the pouring of the upper group of the tail furnaces is finished, rotating the ladle turret to a horizontal position to prepare for measuring the depth of the residual molten steel in the tundish, and after the pouring of the molten steel in the ladle of the upper group of the tail furnaces is finished, slagging in the crystallizer;
s2, when the molten steel in the tundish is less than 30t, reducing the production pulling speed, and starting to measure the depth of the molten steel in the tundish;
s3, checking the spare baking tundish when the tonnage of the tundish reaches 20 t;
s4, when the tonnage of the tundish reaches 15t, the pulling speed is reduced to 0.8 m/min; when the liquid level of the tundish is below 300mm, taking down a pressing rod of a stopper of the tundish, closing the rod, simultaneously driving a blind plate, casting the blank at the casting position according to the crawling casting speed, and waiting for butt joint of the tundish;
after the pouring position tundish car and the baking position tundish car start to be synchronously lifted and moved, fishing out the large slag strips, and fully stirring molten steel in the crystallizer by using a bent oxygen lance to ensure that the molten steel shakes to quickly form a blank shell with the height of about 100 mm;
s5, quickly centering the tundish car to be butted left and right after the tundish car moves to a pouring position, dropping to a low position, quickly sleeving a pressing rod on the tundish car and lifting the pressing rod upwards, and simultaneously informing a ladle worker to start pouring and stopping stirring;
s6, measuring the distance between the shell of the lower pulling blank and the upper opening of the crystallizer, stopping pulling and straightening when the preset pulling depth is reached, and simultaneously putting a flow baffle plate;
(II) acceleration
S7, when the weight of the newly replaced tundish molten steel reaches 6-10t, opening a stopper rod to start casting in a high flow, controlling the seedling emergence time to be more than 60S, and ensuring the full connection of the front and back new and old molten steel blank shells;
s8, after stopping pulling and straightening, the master control records the length of the blank when pulling and straightening are stopped, the length of the blank is reported every time the length of the blank is prolonged by 0.1m until the length of the blank is 1m after pulling and straightening is stopped, the pulling speed is set to be 0.1m/min after starting, the pulling speed is increased to be 0.2m/min when the length of the blank is 0.1m, the pulling speed is increased to be 0.3m/min when the length of the blank is 0.2m, the pulling speed is increased to be 0.3m/min when the length of the blank is 0.3m/min, the pulling speed is kept for one minute when the length of the blank is 0.4m/min, the pulling speed is kept for one minute after one minute and is increased to be 0.6m/min when the length of the blank is 0.6m/min, and the pulling speed.
The technical scheme of the invention is further defined as follows:
according to the method for operating the butting and accelerating of the continuous casting tundish of the ultra-thick plate blank, one person is responsible for centering and lifting of the tundish car in the butting process of the tundish, one person commands and observes the centering condition of the inner arc and the outer arc of the submerged nozzle on one side of the crystallizer opening, and one person commands the left and right centering of the submerged nozzle on the middle position of the inner arc side of the cover plate of the crystallizer.
In the foregoing method for operating the speed-up of the continuous casting tundish of the ultra-thick slab, after the tundish car is driven to the casting position during the tundish butt joint, the inner arc and the outer arc are centered: firstly, a person at one side of a crystallizer opening confirms the centering condition of the inner arc and the outer arc of the submerged nozzle, commands the centering of the inner arc and the outer arc and commands the falling of a tundish, and after the lower part of the nozzle enters the crystallizer, the distance between the outer side of the inside of the tool nozzle and a crystallizer copper plate is used for fine adjustment, so that the adjustment of a tundish car is finished before the tundish car falls to a position; left-right centering: and when the inner arc and the outer arc are centered, an operator at the middle position of the inner arc side of the cover plate of the crystallizer commands left and right centering.
In the method for operating the butt joint and the speed increase of the continuous casting tundish of the ultra-thick plate blank, in the butt joint process of the tundish, a steel pouring worker drops the tundish according to the distance of the blank drawn downwards, the distance of the casting blank drawn downwards is measured continuously, the distance of 200 plus 300mm is kept between a water gap and a blank shell, and the withdrawal and correction are stopped when the depth is 450 mm.
According to the butt joint speed-increasing operation method for the continuous casting tundish of the ultra-thick plate blank, in the butt joint process of the tundish, the time from the pouring end time of the previous tundish to the pouring start time of the next large tundish is controlled to be about 6min, so that the auxiliary time is reduced as much as possible, and the butt joint operation time is shortened.
According to the method for operating the butting and the speed-increasing of the continuous casting tundish of the ultra-thick plate blank, during the speed-increasing process, the master control performs the second reading and the blank length reporting work, a steel pouring worker uses a large flow to start pouring, when the molten steel overflows a half of a side hole of a water gap, the flow is properly collected, then the flow is supplemented according to the liquid level, and the starting is ensured after 60 seconds.
In the method for operating the butt joint and the speed increasing of the continuous casting tundish of the ultra-thick plate blank, in the speed increasing process, after the steel ladle molten steel of the last group of casting tail furnaces is poured, the slag melting is started in the crystallizer, and the slag melting is carried out until the slag becomes red or a little black slag exists.
In the butt joint speed-increasing operation method for the continuous casting tundish of the ultra-thick plate blank, molten steel and slag in the crystallizer are fully stirred by the bent oxygen blowing pipe in the speed-increasing process, so that the molten steel shakes, and a blank shell with the height of 100mm is quickly formed.
The invention has the beneficial effects that:
on the premise of ensuring the smooth butt joint of the continuous casting tundish, the invention reduces the damage to equipment caused by blank drawing and large straightening resistance due to undercooling of a casting blank in the process of low drawing speed in the butt joint process and the occurrence of butt joint bleed-out caused by poor connection of front and rear blank shells due to quick butt joint lifting speed, improves the continuous casting butt joint stability of the ultra-thick plate blank to the maximum extent, and realizes the purposes of stable and high yield of a continuous casting machine and reduction of production cost. The method successfully solves the process operation difficulty caused by overhigh or overlow pulling speed in the continuous casting butt joint of the ultra-thick plate blank with the thickness of more than 260mm, designs the speed increasing method of the continuous casting butt joint of the ultra-thick plate blank according to the characteristics of the solidification time of the blank shell before and after molten steel so as to achieve the aim of stabilizing the success rate of the continuous casting butt joint of the ultra-thick plate blank, and has good popularization value.
Drawings
FIG. 1 is a schematic diagram of the docking implementation of the present invention;
wherein: 1. large bags; 2. a long nozzle; 3. a middle package; 4. an immersion nozzle; 5. a crystallizer; 6. and (6) butting blanks.
Detailed Description
Comparative example
The method for operating the butt joint and the speed increase of the tundish in the continuous casting of the ultra-thick plate blank comprises the following steps:
butt joint of tundish
S1, after the pouring of the upper group of the tail furnaces is finished, rotating the rotary table of the ladle 1 to the horizontal position to prepare for measuring the depth of the residual molten steel in the tundish, and after the pouring of the molten steel of the steel ladles of the upper group of the tail furnaces is finished, slagging in the crystallizer 5;
s2, when the molten steel in the tundish is less than 30t, reducing the production pulling speed, and starting to measure the depth of the molten steel in the tundish;
s3, checking the spare baking tundish when the tonnage of the tundish reaches 20 t;
s4, when the tonnage of the tundish reaches 15t, the pulling speed is reduced to 0.8 m/min; when the liquid level of the tundish is below 300mm, taking down a pressing rod of a stopper of the tundish, closing the rod, simultaneously driving a blind plate, casting the blank at the casting position according to the crawling casting speed, and waiting for butt joint of the tundish 3;
after the pouring position tundish car and the baking position tundish car start to be synchronously lifted and moved, fishing out the large slag strips, and fully stirring molten steel in the crystallizer 5 by using a bent oxygen lance to ensure that the molten steel shakes to quickly form a blank shell with the height of about 100 mm;
s5, quickly centering the tundish car to be butted left and right after the tundish car moves to a pouring position, dropping to a low position, quickly sleeving a pressing rod on the tundish car and lifting the pressing rod upwards, simultaneously informing a ladle 1 worker to start pouring, and stopping stirring;
s6, measuring the distance between the shell of the pull-down billet and the upper opening of the crystallizer 5, stopping pulling and straightening when the preset pull-down depth is reached, and simultaneously putting a flow baffle plate;
(II) acceleration
S7, when the weight of the newly replaced tundish molten steel reaches 6-10t, opening a stopper rod to start casting in a high flow, controlling the seedling emergence time to be more than 60S, and ensuring the full connection of the front and back new and old molten steel blank shells;
and S8, after stopping pulling and straightening, recording the blank length when pulling and straightening is stopped by the master controller, reporting the blank length once per 0.1m of extension of the blank length when pulling and straightening is stopped until the blank length is 1m after starting, setting the starting pulling speed to be 0.2m/min, increasing the pulling speed to be 0.40m/min when the blank length is 0.1m, and increasing the pulling speed to be 0.05m/min every 30S until the pulling speed is increased to the target pulling speed.
In the actual production operation process, due to the fact that the solidification and connection of front and rear blank shells in the crystallizer 5 are poor due to the fact that the butt joint expansion speed is too high, serious steel leakage accidents occur after the front and rear blank shells are separated out of the crystallizer 5, even if the blank connecting positions of two narrow faces of the butt joint blank 6 are not serious, cracking occurs, and the crack depth reaches as much as 50 mm.
Examples
The method for operating the butt joint and the speed increase of the tundish in the continuous casting of the ultra-thick plate blank, as shown in fig. 1, includes the following steps:
butt joint of tundish
S1, after the pouring of the upper group of the tail furnaces is finished, rotating the rotary table of the ladle 1 to the horizontal position to prepare for measuring the depth of the residual molten steel in the tundish, and after the pouring of the molten steel of the steel ladles of the upper group of the tail furnaces is finished, slagging in the crystallizer 5;
s2, when the molten steel in the tundish is less than 30t, reducing the production pulling speed, and starting to measure the depth of the molten steel in the tundish;
s3, checking the spare baking tundish when the tonnage of the tundish reaches 20 t;
s4, when the tonnage of the tundish reaches 15t, the pulling speed is reduced to 0.8 m/min; when the liquid level of the tundish is below 300mm, taking down a pressing rod of a stopper of the tundish, closing the rod, simultaneously driving a blind plate, casting the blank at the casting position according to the crawling casting speed, and waiting for butt joint of the tundish 3;
after the pouring position tundish car and the baking position tundish car start to be synchronously lifted and moved, fishing out the large slag strips, and fully stirring molten steel in the crystallizer 5 by using a bent oxygen lance to ensure that the molten steel shakes to quickly form a blank shell with the height of about 100 mm;
s5, quickly centering the tundish car to be butted left and right after the tundish car moves to a pouring position, dropping to a low position, quickly sleeving a pressing rod on the tundish car and lifting the pressing rod upwards, simultaneously informing a ladle 1 worker to start pouring, and stopping stirring;
s6, measuring the distance between the shell of the pull-down billet and the upper opening of the crystallizer 5, stopping pulling and straightening when the preset pull-down depth is reached, and simultaneously putting a flow baffle plate;
in the butt joint process of the tundish, one person is responsible for centering and lifting a tundish 3 vehicle, one person commands and observes the centering condition of the inner arc and the outer arc of the submerged nozzle 4 at one side of the opening of the crystallizer 5, and one person commands the submerged nozzle 4 to be centered left and right at the middle position of the inner arc side of a cover plate of the crystallizer 5; after the butt-joint tundish 3 is driven to the pouring position, centering the inner arc and the outer arc: firstly, a person at one side of an opening of the crystallizer 5 confirms the centering condition of the inner arc and the outer arc of the submerged nozzle 4, commands the centering of the inner arc and the outer arc and commands the tundish 3 to fall, and after the lower part of the nozzle enters the crystallizer 5, the distance between the inner side and the outer side of a water metering opening of a tool and a copper plate of the crystallizer 5 is used for fine adjustment, so that the adjustment of a tundish 3 vehicle is finished before; left-right centering: while the inner arc and the outer arc are centered, an operator at the middle position of the inner arc side of the cover plate of the crystallizer 5 commands left and right centering; the steel pouring worker drops the tundish 3 according to the distance of blank pulling, continuously measures the distance of the casting blank pulling downwards, keeps the distance of 200 mm and 300mm between the water gap and the blank shell, and stops pulling and correcting when the depth is 450 mm; the time from the end time of pouring of the previous tundish 3 to the time of pouring of the next ladle 1 is controlled to be about 6min, so that the auxiliary time is reduced as much as possible, and the butt joint operation time is shortened.
(II) acceleration
S7, when the weight of the newly replaced tundish molten steel reaches 6-10t, opening a stopper rod to start casting in a high flow, controlling the seedling emergence time to be more than 60S, and ensuring the full connection of the front and back new and old molten steel blank shells;
s8, after stopping pulling and straightening, the master control records the length of the blank when pulling and straightening are stopped, the length of the blank is reported once per 0.1m of the length of the blank when pulling and straightening are stopped until the length of the blank is 1m after starting, the pulling speed is set to be 0.1m/min, the pulling speed is increased to be 0.2m/min when the length of the blank is 0.1m, the pulling speed is increased to be 0.3m/min when the length of the blank is 0.2m, the pulling speed is increased to be 0.3m/min when the length of the blank is 0.3m/min, the pulling speed is kept for one minute when the length of the blank is 0.4m/min, the pulling speed is kept for one minute after one minute and is increased to be 0.6m/min, the pulling speed is kept for two minutes when the length of the blank is 0.05 m;
in the speed raising process, the main control system well reads the second and reports the blank length to work, a steel pouring worker uses a large flow to pour, when the molten steel overflows a half of a side hole of a water gap, the flow is properly collected, then the flow is supplemented according to the liquid level, and the starting is ensured after 60 seconds; after the molten steel of the ladle of the tail furnace is poured in the last group of pouring times, slagging is started in the crystallizer 5 until the slag turns red or a little black slag exists; molten steel and slag in the crystallizer 5 are fully stirred by a bent oxygen lance, so that the molten steel shakes to quickly form a blank shell with the height of 100 mm.
In the actual production operation process, the execution embodiment can well ensure the connection state of front and back blanks of the butt joint blank 6 by tracking the butt joint blank 6 for many times, and butt joint steel leakage and joint cracking of the butt joint blank 6 do not occur.
The invention successfully solves the problems that the joint of the front and rear connected billets is poor due to the over-high acceleration in the continuous casting and butt joint process of the ultra-thick plate billet with the thickness of more than 260mm, and the joint of the connected billets cracks and even splits to cause the crystallizer 5 to form butt joint bleed-out, thereby causing millions of economic losses. The operation method improves the stability of the continuous casting and butt joint operation of the ultra-thick plate blank, the stability of equipment and the metal yield, and saves the production cost.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (8)
1. A method for operating the butt joint and the speed increase of a tundish in the continuous casting of an ultra-thick plate blank is characterized by comprising the following steps: the method comprises the following steps:
butt joint of tundish
S1, after the last group of tail furnaces finishes pouring, rotating the rotary table of the large ladle (1) to the horizontal position to prepare for measuring the depth of the residual molten steel in the tundish, and after the last group of tail furnaces finishes pouring the molten steel in the ladle, slagging in the crystallizer (5);
s2, when the molten steel in the tundish is less than 30t, reducing the production pulling speed, and starting to measure the depth of the molten steel in the tundish;
s3, checking the spare baking tundish when the tonnage of the tundish reaches 20 t;
s4, when the tonnage of the tundish reaches 15t, the pulling speed is reduced to 0.8 m/min; when the liquid level of the tundish is below 300mm, taking down a pressing rod of a stopper of the tundish, closing the rod, simultaneously driving a blind plate, casting the blank at the casting position according to the crawling casting speed, and waiting for butt joint of the tundish (3);
after the pouring position tundish car and the baking position tundish car start to be synchronously lifted and moved, fishing out the large slag strips, and fully stirring molten steel in the crystallizer (5) by using a bent oxygen lance to ensure that the molten steel shakes to quickly form a blank shell with the height of about 100 mm;
s5, quickly centering the tundish car to be butted left and right after the tundish car moves to a pouring position, dropping to a low position, quickly sleeving a pressing rod on the tundish car and lifting the pressing rod upwards, simultaneously informing a large ladle (1) to start pouring, and stopping stirring;
s6, measuring the distance between the shell of the pull-down billet and the upper opening of the crystallizer (5), stopping pulling and straightening when the preset pull-down depth is reached, and simultaneously putting a flow baffle plate;
(II) acceleration
S7, when the weight of the newly replaced tundish molten steel reaches 6-10t, opening a stopper rod to start casting in a high flow, controlling the seedling emergence time to be more than 60S, and ensuring the full connection of the front and back new and old molten steel blank shells;
s8, after stopping pulling and straightening, the master control records the length of the blank when pulling and straightening are stopped, the length of the blank is reported every time the length of the blank is prolonged by 0.1m until the length of the blank is 1m after pulling and straightening is stopped, the pulling speed is set to be 0.1m/min after starting, the pulling speed is increased to be 0.2m/min when the length of the blank is 0.1m, the pulling speed is increased to be 0.3m/min when the length of the blank is 0.2m, the pulling speed is increased to be 0.3m/min when the length of the blank is 0.3m/min, the pulling speed is kept for one minute when the length of the blank is 0.4m/min, the pulling speed is kept for one minute after one minute and is increased to be 0.6m/min when the length of the blank is 0.6m/min, and the pulling speed.
2. The butt joint acceleration-reduction operation method for the continuous casting tundish of the ultra-thick slab blank according to claim 1, characterized in that: in the middle ladle butt joint process, one person is responsible for centering and lifting of a middle ladle (3) vehicle, one person commands and observes the inner and outer arc centering conditions of the submerged nozzle (4) on one side of the opening of the crystallizer (5), and one person commands the submerged nozzle (4) to be centered left and right on the middle position of the inner arc side of the cover plate of the crystallizer (5).
3. The butt joint acceleration-reduction operation method for the continuous casting tundish of the ultra-thick slab blank according to claim 1, characterized in that: in the butt joint process of the tundish, after the tundish (3) to be butted is driven to a pouring position, the inner arc and the outer arc are centered: firstly, a worker at one side of an opening of the crystallizer (5) confirms the centering condition of the inner arc and the outer arc of the submerged nozzle (4), commands the centering of the inner arc and the outer arc and commands the falling of the tundish (3), and finely adjusts the distance between the outer side of the inner side of the tool water metering opening and a copper plate of the crystallizer (5) after the lower part of the nozzle enters the crystallizer (5), so that the adjustment is finished before the tundish (3) vehicle falls in place; left-right centering: and when the inner arc and the outer arc are centered, an operator at the middle position of the inner arc side of the cover plate of the crystallizer (5) commands left and right centering.
4. The butt joint acceleration-reduction operation method for the continuous casting tundish of the ultra-thick slab blank according to claim 1, characterized in that: in the butt joint process of the tundish, a steel pouring worker drops the tundish (3) according to the distance of blank pulling, the distance of the casting blank pulling downwards is measured continuously, the distance of 200-300mm is kept between the water gap and the blank shell, and pulling and correcting are stopped when the depth is 450 mm.
5. The butt joint acceleration-reduction operation method for the continuous casting tundish of the ultra-thick slab blank according to claim 1, characterized in that: in the butt joint process of the tundish, the time from the pouring end time of the previous tundish (3) to the pouring start time of the next ladle (1) is controlled to be about 6min, so that the auxiliary time is reduced as much as possible, and the butt joint operation time is shortened.
6. The butt joint acceleration-reduction operation method for the continuous casting tundish of the ultra-thick slab blank according to claim 1, characterized in that: in the speed raising process, the main control well reads the second and reports the blank length, the steel pouring worker uses a large flow to pour, when the molten steel overflows a half of the side hole of the water gap, the flow is properly collected, then the flow is supplemented according to the liquid level, and the starting is ensured after 60 seconds.
7. The butt joint acceleration-reduction operation method for the continuous casting tundish of the ultra-thick slab blank according to claim 1, characterized in that: in the speed raising process, after the pouring of the molten steel of the ladle of the tail furnace is finished in the last pouring of the upper group, the slag is started in the crystallizer (5) and is melted until the slag turns red or a little black slag exists.
8. The butt joint acceleration-reduction operation method for the continuous casting tundish of the ultra-thick slab blank according to claim 1, characterized in that: in the speed raising process, molten steel and slag in the crystallizer are fully stirred by a bent oxygen lance, so that the molten steel shakes to quickly form a blank shell with the height of 100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010951278.2A CN112222368A (en) | 2020-09-11 | 2020-09-11 | Method for operating butt joint and speed increasing of tundish in continuous casting of ultra-thick plate blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010951278.2A CN112222368A (en) | 2020-09-11 | 2020-09-11 | Method for operating butt joint and speed increasing of tundish in continuous casting of ultra-thick plate blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112222368A true CN112222368A (en) | 2021-01-15 |
Family
ID=74115655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010951278.2A Pending CN112222368A (en) | 2020-09-11 | 2020-09-11 | Method for operating butt joint and speed increasing of tundish in continuous casting of ultra-thick plate blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112222368A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145810A (en) * | 2021-02-01 | 2021-07-23 | 南京钢铁股份有限公司 | Operation method for preventing steel infiltration of continuous slab casting butt joint billet |
| CN116871470A (en) * | 2023-09-06 | 2023-10-13 | 成都先进金属材料产业技术研究院股份有限公司 | Continuous casting method of round billet continuous casting machine special steel type without connecting billet and connecting piece |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941323A (en) * | 2012-12-12 | 2013-02-27 | 济钢集团有限公司 | Method for quickly replacing tundish at low liquid level of medium thin plate blank continuous casting machine crystallizer |
| CN103302258A (en) * | 2013-06-28 | 2013-09-18 | 攀钢集团攀枝花钢钒有限公司 | Continuous casting tundish changing method |
| CN103464699A (en) * | 2013-08-13 | 2013-12-25 | 新疆八一钢铁股份有限公司 | Method for increasing success rate of heat exchange of continuous casting machine tundish |
| CN109894587A (en) * | 2019-04-03 | 2019-06-18 | 南京钢铁股份有限公司 | A kind of generous specification slab CC tundish docking production technology |
| CN111112565A (en) * | 2020-01-15 | 2020-05-08 | 首钢京唐钢铁联合有限责任公司 | Method for quickly replacing peritectic steel tundish |
-
2020
- 2020-09-11 CN CN202010951278.2A patent/CN112222368A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941323A (en) * | 2012-12-12 | 2013-02-27 | 济钢集团有限公司 | Method for quickly replacing tundish at low liquid level of medium thin plate blank continuous casting machine crystallizer |
| CN103302258A (en) * | 2013-06-28 | 2013-09-18 | 攀钢集团攀枝花钢钒有限公司 | Continuous casting tundish changing method |
| CN103464699A (en) * | 2013-08-13 | 2013-12-25 | 新疆八一钢铁股份有限公司 | Method for increasing success rate of heat exchange of continuous casting machine tundish |
| CN109894587A (en) * | 2019-04-03 | 2019-06-18 | 南京钢铁股份有限公司 | A kind of generous specification slab CC tundish docking production technology |
| CN111112565A (en) * | 2020-01-15 | 2020-05-08 | 首钢京唐钢铁联合有限责任公司 | Method for quickly replacing peritectic steel tundish |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145810A (en) * | 2021-02-01 | 2021-07-23 | 南京钢铁股份有限公司 | Operation method for preventing steel infiltration of continuous slab casting butt joint billet |
| CN116871470A (en) * | 2023-09-06 | 2023-10-13 | 成都先进金属材料产业技术研究院股份有限公司 | Continuous casting method of round billet continuous casting machine special steel type without connecting billet and connecting piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113210577B (en) | Method for improving success rate of changing middle ladle of wide section of plate blank and manufacturing method thereof | |
| CN112222368A (en) | Method for operating butt joint and speed increasing of tundish in continuous casting of ultra-thick plate blank | |
| CN113145810A (en) | Operation method for preventing steel infiltration of continuous slab casting butt joint billet | |
| CN108907130A (en) | A kind of method of thin-slab caster automatic casting | |
| CN102886501A (en) | Tooling for efficiently manufacturing wide thick plate blank for wide thick plate rolling machine and manufacture method thereof | |
| CN114682752A (en) | Method for quickly replacing online tundish of ultra-wide thin slab continuous casting machine | |
| CN109894587B (en) | Butt joint production process for wide and thick plate blank continuous casting tundish | |
| CN112658242A (en) | Method for reducing bonding by replacing submerged nozzle | |
| CN105671242A (en) | Maintenance method for converter lining | |
| CN116274927A (en) | Production process for realizing heat exchange tundish by using multi-machine multi-flow aerosol cooling continuous casting machine | |
| CN202762983U (en) | Efficient production tool of wide and thick slabs for wide and thick plate rolling mill | |
| CN116020987A (en) | Continuous casting method of high alloy steel Cr12MoV series | |
| CN114472835A (en) | Heat exchange operation method for wide and thick plate blank continuous casting tundish | |
| CN110961587B (en) | Method for reducing length of mixed casting blank by isolating mixed casting molten steel | |
| JP2005103552A (en) | Continuous casting method | |
| CN116060591A (en) | Tundish butt joint method for 320mm thick slab | |
| CN201940550U (en) | Manufacturing tooling of high density, wide and thick plate blank for wide and heavy plate mill | |
| CN115026255B (en) | Continuous casting method for steel slab with tundish hot-changing casting | |
| CN111482563B (en) | Continuous casting production method of super-large section special-shaped blank | |
| CN217393695U (en) | Quick-change connecting piece suitable for medium-specification section round billet continuous casting machine | |
| CN115044776B (en) | Liquid electroslag remelting device and smelting process | |
| CN117245068A (en) | Quick-change process for slab high-quality carbon steel tundish | |
| JPH11114658A (en) | Method for continuously casting different kinds of steel | |
| CN117531990A (en) | Tool and method for replacing tundish of continuous casting machine | |
| CN115592081A (en) | Automatic casting method for small-section round billet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210115 |
|
| RJ01 | Rejection of invention patent application after publication |