CN103769569A - Flow control device and method for continuous casting tundish - Google Patents
Flow control device and method for continuous casting tundish Download PDFInfo
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- CN103769569A CN103769569A CN201410052044.9A CN201410052044A CN103769569A CN 103769569 A CN103769569 A CN 103769569A CN 201410052044 A CN201410052044 A CN 201410052044A CN 103769569 A CN103769569 A CN 103769569A
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- stopper
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Abstract
The invention relates to a flow control device and method for a continuous casting tundish. The device comprises a stopper mechanism, a stopper, a stopper water port and a brick cup, wherein the stopper is connected with the stopper mechanism, the stopper water port is provided with an opening and arranged below the stopper, the stopper water port is sleeved with the brick cup, an upper water port is fixedly installed in the brick cup below the stopper water port, and a quick-change lower water port is movably installed below the upper water port. The quick-change lower water port is movably installed at the lower part of the upper water port through a quick-change mechanism, the lower water port is replaced regularly for matched flow control with the stopper, through matching of different apertures of the quick-change lower water port with the opening degree of the stopper, the circumferential seam area is increased, scouring of molten steel to the head of the stopper and bowl parts of the water ports is relieved, the flow control time is prolonged, the service life of the tundish is prolonged, and the steelmaking cost is reduced.
Description
Technical field
This practicality invention relates to Ferrous Metallurgy continuous casting field, is specifically related to a kind of continuous casting device for controlling flow of ladle and method.
Background technology
At present, continuous small-billet casting tundish flow control mainly contains two kinds: entirety plug side flow control and Quick-changing sizing water gap flow control.Integral column of sagger plays switching function in tundish, relies on control stopper head to regulate the molten steel flow that enters crystallizer to the position of middle water containing opening.Metering nozzle flow control is to rely on the size adjustment of mouth of a river internal diameter to enter the molten steel flow of crystallizer.
Stopper rod flow control principle is that molten steel enters the mouth of a river by the circumferential weld between stopper head and water gap bowl portion and flows in crystallizer, in operation, can regulate circumferential weld area by the position of adjusting between stopper head and water gap bowl portion.In the time that circumferential weld area changes, the molten steel passing through also changes thereupon, thus molten steel height and pulling rate in crystallization control device.
Stopper and the mouth of a river, kept certain flow to carry out steel stream with certain aperture all the time and regulated without melting loss but also without stop up in the situation that not only.But in actual production, due to stopper and mouth of a river melting loss, increase stopper open height for guaranteeing that certain molten steel flow needs constantly to adjust.In the time that melting loss is violent, when stopper height height is transferred to certain numerical value, the phenomenon of steel stream can be lost control of in stopper and the mouth of a river.In practical operation: in the time that the opening degree of stopper is less than setting value, pulling rate and steel-passing amount depend on circumferential weld area,, along with the increase of opening degree, steel-passing amount increases.Inferior process is exactly the process of the normal flow control of stopper; In the time that stopper opening degree equals to set, stopper opening degree and mouth of a river diameter reach critical value, and steel-passing amount depends on that steel-passing amount depends in stopper opening degree and mouth of a river diameter two parameters the parameter changing.Now, flow control ability reaches capacity, by out of control; In the time that stopper opening degree is greater than setting value, stopper has lost normal effect, and steel-passing amount depends on mouth of a river internal diameter size completely, out of control.Under dynamically, the prolongation of the duration of pouring thereupon, stopper head, water gap bowl portion, mouth of a river internal diameter army are along with the antiscour of molten steel corrodes and changes.If still keep the firm flow of original state, the aperture that must dwindle stopper.In steel pouring process, the erosion of uncontrollable stopper head and water gap bowl portion is very fast, while reaching 20 stove left and right, stopper often occurs out of control suddenly in bag age, causes tundish work life to reduce, and the technology that cannot accurately realize is produced, and causes steel-making cost to increase.
In the time adopting Quick-changing sizing water gap flow control, when metering nozzle hole enlargement reaches after certain value, it is large that flow velocity becomes, and also cannot realize flow control, must change metering nozzle, causes equally tundish work life to reduce, and the technology that cannot accurately realize is produced, and causes steel-making cost to increase.
Therefore, production is a kind of simple in structure, easy to operate, and operating efficiency is high, and the flow control time is long, and stability is high, tundish long service life, and steel-making cost is low, and the simple and effective continuous casting device for controlling flow of ladle of control method and method, have market prospects widely.
Summary of the invention
For the deficiencies in the prior art, the invention provides one simple in structure, easy to operate, operating efficiency is high, and the flow control time is long, and stability is high, tundish long service life, steel-making cost is low, the simple and effective continuous casting device for controlling flow of ladle of control method and method.
Technical scheme of the present invention is achieved in that a kind of continuous casting device for controlling flow of ladle, stopper, the stopper mouth of a river with opening that is arranged on stopper below that comprises plug rod mechanism, be connected with plug rod mechanism, the brick cup that is sleeved on outside, the stopper mouth of a river, in the brick cup of described below, the stopper mouth of a river, be installed with filling pipe end, the underside of filling pipe end is provided with quick-change collector nozzle, and quick-change collector nozzle is movably arranged on filling pipe end bottom by quick-changing mechanism.
The center line of described the stopper mouth of a river, filling pipe end and quick-change collector nozzle overlaps, and the diameter of quick-change collector nozzle is 17.5 mm, 19 mm, 20 mm or 22mm.
As the above the control method of continuous casting device for controlling flow of ladle of power, its control method is as follows: the two control flow methods that adopt stopper rod flow control to match with quick change flow control, and flow control step is as follows: installation brick cup and the stopper mouth of a river, stopper and plug rod mechanism are connected and installed; Install the mouth of a river and quick-change collector nozzle, quick-change collector nozzle is connected with quick-changing mechanism and adjusts location, the stopper mouth of a river is overlapped with the center line of filling pipe end and quick-change collector nozzle; Stopper keeps larger aperture, only allows circumferential weld gap play fine setting effect, adjusts flow velocity and keeps in crystallizer liquid level constant by changing quick-change collector nozzle; According to pulling rate, coordinate the quick-change collector nozzle of the different pore size of changing to adjust the aperture of stopper; Continuous casting finishes detaching device.
The present invention has following good effect: the present invention is in steel pouring process, control the flux of molten steel by changing the size of quick-change collector nozzle change mouth of a river internal diameter and realize flow control, can make stopper keep larger aperture, only allow circumferential weld gap play fine setting effect, keep the interior liquid level of crystallizer constant; Not only can well carry out flow control to molten steel, but also can improve the service life at stopper and the mouth of a river, extend the flow control time, improve the life-span of tundish, reduce steel-making cost; Contribution of the present invention is that the lower mouth of a river of periodic plan replacing coordinates flow control with stopper, by the different pore size of quick-change collector nozzle and coordinating of stopper aperture, increase circumferential weld area, alleviate molten steel washing away stopper caput and water gap bowl portion, extend the flow control time, improve the life-span of tundish, reduce steel-making cost.
Accompanying drawing explanation
Fig. 1 is one of structural representation of the present invention.
Fig. 2 is two of structural representation of the present invention.
The specific embodiment
As shown in Figure 1, 2, a kind of continuous casting device for controlling flow of ladle, stopper 8, the stopper mouth of a river 2 with opening 4 that is arranged on stopper 8 belows that comprises plug rod mechanism 7, be connected with plug rod mechanism 7, the brick cup 3 that is sleeved on 2 outsides, the stopper mouth of a river, in the brick cup 3 of described 2 belows, the stopper mouth of a river, be installed with filling pipe end 9, the underside of filling pipe end 9 is provided with quick-change collector nozzle 5, and quick-change collector nozzle 5 is movably arranged on filling pipe end 9 bottoms by quick-changing mechanism 6.The center line of described the stopper mouth of a river 2, filling pipe end 9 and quick-change collector nozzle 5 overlaps, and the diameter of quick-change collector nozzle 5 is 17.5 mm, 19 mm, 20 mm or 22mm.
The above the control method of continuous casting device for controlling flow of ladle of a kind of as power, it is characterized in that, its control method is as follows: the two control flow methods that adopt stopper rod flow control to match with quick change flow control, and flow control step is as follows: brick cup 3 and the stopper mouth of a river 2 are installed, and stopper 8 is connected and installed with plug rod mechanism 7; Install the mouth of a river 9 and quick-change collector nozzle 5, quick-change collector nozzle 5 is connected with quick-changing mechanism 6 and adjusts location, the stopper mouth of a river 2 is overlapped with the center line of filling pipe end 9 and quick-change collector nozzle 5; Stopper 8 keeps larger aperture, only allows circumferential weld gap play fine setting effect, adjusts flow velocity and keeps in crystallizer liquid level constant by changing quick-change collector nozzle 5; According to pulling rate, coordinate the quick-change collector nozzle 5 of the different pore size of changing to adjust the aperture of stopper; Continuous casting finishes detaching device.
Embodiment 1: a kind of continuous casting device for controlling flow of ladle, stopper 8, the stopper mouth of a river 2 with opening 4 that is arranged on stopper 8 belows that comprises plug rod mechanism 7, be connected with plug rod mechanism 7, the brick cup 3 that is sleeved on 2 outsides, the stopper mouth of a river, in the brick cup 3 of described 2 belows, the stopper mouth of a river, be installed with filling pipe end 9, the underside of filling pipe end 9 is provided with quick-change collector nozzle 5, and quick-change collector nozzle 5 is movably arranged on filling pipe end 9 bottoms by quick-changing mechanism 6.The center line of described the stopper mouth of a river 2, filling pipe end 9 and quick-change collector nozzle 5 overlaps, and the diameter of quick-change collector nozzle 5 is 17.5 mm, 19 mm, 20 mm or 22mm.
The above the control method of continuous casting device for controlling flow of ladle of a kind of as power, it is characterized in that, its control method is as follows: the two control flow methods that adopt stopper rod flow control to match with quick change flow control, and flow control step is as follows: brick cup 3 and the stopper mouth of a river 2 are installed, and stopper 8 is connected and installed with plug rod mechanism 7; Install the mouth of a river 9 and quick-change collector nozzle 5, quick-change collector nozzle 5 is connected with quick-changing mechanism 6 and adjusts location, the stopper mouth of a river 2 is overlapped with the center line of filling pipe end 9 and quick-change collector nozzle 5; Stopper 8 keeps larger aperture, only allows circumferential weld gap play fine setting effect, adjusts flow velocity and keeps in crystallizer liquid level constant by changing quick-change collector nozzle 5; According to pulling rate, coordinate the quick-change collector nozzle 5 of the different pore size of changing to adjust the aperture of stopper; Continuous casting finishes detaching device.
The present invention coordinates flow control in the mouth of a river under low C, the low Si such as Q195L, 27SiMn, 30MnSi or potassium steel continuous casting tundish flow control application periodic replacement with stopper, by the different pore size of quick-change collector nozzle and coordinating of stopper aperture, increase circumferential weld area, alleviate molten steel washing away stopper caput and water gap bowl portion, extend the flow control time, improve the life-span of tundish, maximum life span reaches 50 stoves, average lives 32.1 stove, average life span improves 8.9 stoves than before, directly reduces steel-making cost and amounts to 1.5 yuan/ton of ton steel.
Embodiment 2: a kind of continuous casting device for controlling flow of ladle, stopper 8, the stopper mouth of a river 2 with opening 4 that is arranged on stopper 8 belows that comprises plug rod mechanism 7, be connected with plug rod mechanism 7, the brick cup 3 that is sleeved on 2 outsides, the stopper mouth of a river, in the brick cup 3 of described 2 belows, the stopper mouth of a river, be installed with filling pipe end 9, the underside of filling pipe end 9 is provided with quick-change collector nozzle 5, and quick-change collector nozzle 5 is movably arranged on filling pipe end 9 bottoms by quick-changing mechanism 6.The center line of described the stopper mouth of a river 2, filling pipe end 9 and quick-change collector nozzle 5 overlaps, and the diameter of quick-change collector nozzle 5 is 17.5 mm, 19 mm, 20 mm or 22mm.
The above the control method of continuous casting device for controlling flow of ladle of a kind of as power, it is characterized in that, its control method is as follows: the two control flow methods that adopt stopper rod flow control to match with quick change flow control, and flow control step is as follows: brick cup 3 and the stopper mouth of a river 2 are installed, and stopper 8 is connected and installed with plug rod mechanism 7; Install the mouth of a river 9 and quick-change collector nozzle 5, quick-change collector nozzle 5 is connected with quick-changing mechanism 6 and adjusts location, the stopper mouth of a river 2 is overlapped with the center line of filling pipe end 9 and quick-change collector nozzle 5; Stopper 8 keeps larger aperture, only allows circumferential weld gap play fine setting effect, adjusts flow velocity and keeps in crystallizer liquid level constant by changing quick-change collector nozzle 5; According to pulling rate, coordinate the quick-change collector nozzle 5 of the different pore size of changing to adjust the aperture of stopper; Continuous casting finishes detaching device.
The present invention is in four machine four stream caster tundish flow control application, coordinate flow control by regularly replacing the lower mouth of a river with stopper, by the different pore size of quick-change collector nozzle and coordinating of stopper aperture, increase circumferential weld area, alleviate molten steel washing away stopper caput and water gap bowl portion, extend the flow control time, improve life-span of tundish, maximum life span reaches 48 stoves, average lives 30 stove, average life span improves 10 stoves than before, directly reduces steel-making cost and amounts to 2 yuan/ton of ton steel.
Embodiment 3: a kind of continuous casting device for controlling flow of ladle, stopper 8, the stopper mouth of a river 2 with opening 4 that is arranged on stopper 8 belows that comprises plug rod mechanism 7, be connected with plug rod mechanism 7, the brick cup 3 that is sleeved on 2 outsides, the stopper mouth of a river, in the brick cup 3 of described 2 belows, the stopper mouth of a river, be installed with filling pipe end 9, the underside of filling pipe end 9 is provided with quick-change collector nozzle 5, and quick-change collector nozzle 5 is movably arranged on filling pipe end 9 bottoms by quick-changing mechanism 6.The center line of described the stopper mouth of a river 2, filling pipe end 9 and quick-change collector nozzle 5 overlaps, and the diameter of quick-change collector nozzle 5 is 17.5 mm, 19 mm, 20 mm or 22mm.
The above the control method of continuous casting device for controlling flow of ladle of a kind of as power, it is characterized in that, its control method is as follows: the two control flow methods that adopt stopper rod flow control to match with quick change flow control, and flow control step is as follows: brick cup 3 and the stopper mouth of a river 2 are installed, and stopper 8 is connected and installed with plug rod mechanism 7; Install the mouth of a river 9 and quick-change collector nozzle 5, quick-change collector nozzle 5 is connected with quick-changing mechanism 6 and adjusts location, the stopper mouth of a river 2 is overlapped with the center line of filling pipe end 9 and quick-change collector nozzle 5; Stopper 8 keeps larger aperture, only allows circumferential weld gap play fine setting effect, adjusts flow velocity and keeps in crystallizer liquid level constant by changing quick-change collector nozzle 5; According to pulling rate, coordinate the quick-change collector nozzle 5 of the different pore size of changing to adjust the aperture of stopper; Continuous casting finishes detaching device.
The present invention is in six machine six stream caster tundish flow control application, the lower mouth of a river of periodic replacement coordinates flow control with stopper, by the different pore size of quick-change collector nozzle and coordinating of stopper aperture, increase circumferential weld area, alleviate molten steel washing away stopper caput and water gap bowl portion, extend the flow control time, improve life-span of tundish, maximum life span reaches 45 stoves, average lives 32 stove, average life span improves 12 stoves than before, directly reduces steel-making cost and amounts to 2.5 yuan/ton of ton steel.
Claims (3)
1. a continuous casting device for controlling flow of ladle, stopper (8), the stopper mouth of a river (2) with opening (4) that is arranged on stopper (8) below that comprises plug rod mechanism (7), be connected with plug rod mechanism (7), the brick cup (3) that is sleeved on outside, the stopper mouth of a river (2), it is characterized in that: in the brick cup (3) of described below, the stopper mouth of a river (2), be installed with filling pipe end (9), the underside of filling pipe end (9) is provided with quick-change collector nozzle (5), and quick-change collector nozzle (5) is movably arranged on filling pipe end (9) bottom by quick-changing mechanism (6).
2. continuous casting device for controlling flow of ladle according to claim 1, it is characterized in that: the center line of described the stopper mouth of a river (2), filling pipe end (9) and quick-change collector nozzle (5) overlaps, and the diameter of quick-change collector nozzle (5) is 17.5 mm, 19 mm, 20 mm or 22mm.
3. the control method of a continuous casting device for controlling flow of ladle as claimed in claim 1, it is characterized in that, its control method is as follows: the two control flow methods that adopt stopper rod flow control to match with quick change flow control, flow control step is as follows: brick cup (3) and the stopper mouth of a river (2) is installed, and stopper (8) is connected and installed with plug rod mechanism (7); Install the mouth of a river (9) and quick-change collector nozzle (5), quick-change collector nozzle (5) is connected and adjusts location with quick-changing mechanism (6), the stopper mouth of a river (2) is overlapped with the center line of filling pipe end (9) and quick-change collector nozzle (5); Stopper (8) keeps larger aperture, only allows circumferential weld gap play fine setting effect, keeps the interior liquid level of crystallizer constant by changing quick-change collector nozzle (5) adjustment flow velocity; According to pulling rate, coordinate the quick-change collector nozzle (5) of the different pore size of changing to adjust the aperture of stopper; Continuous casting finishes detaching device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410052044.9A CN103769569A (en) | 2014-02-17 | 2014-02-17 | Flow control device and method for continuous casting tundish |
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| CN201410052044.9A CN103769569A (en) | 2014-02-17 | 2014-02-17 | Flow control device and method for continuous casting tundish |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105268937A (en) * | 2015-10-23 | 2016-01-27 | 首钢京唐钢铁联合有限责任公司 | Method for controlling quick changing water gap of tundish of continuous casting machine |
| CN106270437A (en) * | 2015-05-26 | 2017-01-04 | 宝山钢铁股份有限公司 | The Auto-Test System of a kind of Metal in Tundish flow control device and method |
| CN107716911A (en) * | 2017-09-14 | 2018-02-23 | 首钢京唐钢铁联合有限责任公司 | A kind of offline adjusting method of stopper |
| CN109719289A (en) * | 2019-03-06 | 2019-05-07 | 山东钢铁股份有限公司 | A kind of continuous casting production and its tundish brick cup |
| CN109990972A (en) * | 2019-02-28 | 2019-07-09 | 北京首钢股份有限公司 | A kind of continuous casting water test model and method |
| CN112427611A (en) * | 2020-10-27 | 2021-03-02 | 河钢股份有限公司承德分公司 | Fixed diameter nozzle replacement pouring device and fixed diameter nozzle pouring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109990972A (en) * | 2019-02-28 | 2019-07-09 | 北京首钢股份有限公司 | A kind of continuous casting water test model and method |
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| CN109719289B (en) * | 2019-03-06 | 2023-10-31 | 山东钢铁股份有限公司 | Continuous casting tundish and tundish pocket brick thereof |
| CN112427611A (en) * | 2020-10-27 | 2021-03-02 | 河钢股份有限公司承德分公司 | Fixed diameter nozzle replacement pouring device and fixed diameter nozzle pouring method |
| CN112427611B (en) * | 2020-10-27 | 2022-04-26 | 河钢股份有限公司承德分公司 | Fixed diameter nozzle replacement pouring device and fixed diameter nozzle pouring method |
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Application publication date: 20140507 |