CN107498034A - Thin-belt casting rolling casting system and its casting method - Google Patents
Thin-belt casting rolling casting system and its casting method Download PDFInfo
- Publication number
- CN107498034A CN107498034A CN201710646124.0A CN201710646124A CN107498034A CN 107498034 A CN107498034 A CN 107498034A CN 201710646124 A CN201710646124 A CN 201710646124A CN 107498034 A CN107498034 A CN 107498034A
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- Prior art keywords
- mouth
- flowing water
- casting
- thin
- molten steel
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Classifications
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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
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
- B22D41/20—Stopper-rod operating equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/502—Connection arrangements; Sealing means therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of thin-belt casting rolling casting system, including cloth flowing water mouth and tundish, cloth flowing water mouth is seal-installed on the bottom of tundish, cloth flowing water mouth is provided with cavity volume and the multiple tapping holes connected with the cavity volume, the upper opening portion of the cavity volume is big and the section that is in the shape of the letter V is shunk in middle and lower part, and the bottom of cloth flowing water mouth offers kerve, cloth flowing water mouth length direction is provided with multiple training dykes on kerve, the top of training dyke is higher than the top of tapping hole, and the height of tapping hole is higher than kerve.Thin-belt casting rolling casting system proposed by the present invention, reduce impact of the molten steel casting cycle to molten bath, while realize the quiet pouring of molten steel.
Description
Technical field
The present invention relates to smelting casting system technical field, more particularly to a kind of thin-belt casting rolling casting system and its casting
Method.
Background technology
Thin-belt casting rolling technology is described as the greatest technological progress of 20th century metallurgical industry, and foreign countries are applied to steel smelting
Golden collar domain.Current domestic thin-belt casting rolling technology has had the application of maturation in non-ferrous metal field, but in steel industry, by steel
The sport technique segment bottleneck effects such as water side seal board, steel band quality, Feeding Liquid Steel into Bath liquid level and undulated control, thin-belt casting rolling technology be not real
Existing industrialization.Wherein, the uniform no pressure of molten steel is mainly distributed into molten bath by Feeding Liquid Steel into Bath control technology using cloth flowing water mouth, more at present
Using the flat structure submersed nozzle with width cloth stream function.
In sheet blank continuous casting field, the issued multinomial patent of flat structure submersed nozzle, still, existing cloth stream
The mouth of a river is primarily present following problem.As application number 200720012995.9 is disclosed suitable for the flat of sheet blank continuous casting
Cloth flowing water mouth, there are five tapping holes in the mouth of a river steel flow source, but such a mouth of a river tapping hole is larger, application number
200520012263.0 disclose the hole opposite sex immersion current distribution device of sheet blank continuous casting four, but such mouth of a river is not also suitable for thinner rule
The thin-belt casting rolling of lattice uses.
In thin-belt casting rolling field, thin-belt casting rolling cloth flowing water mouth has been carried out part and studied.Publication number
CN201261063Y discloses two kinds of cloth flowing water mouths, spade cloth flowing water mouth and the inverted T-shaped mouth of a river, and cloth flowing water mouth all bets pipe using circle
Tubular construction, spade cloth flowing water mouth export department are provided with two to three exit passageways, are formed when being two exit passageways with bet pipe
The molten steel of falling Y shape, to the direct cloth stream in both sides, is betted when being three exit passageways by bet pipe and manages the increase point between exit passageway
Flow block；The bet pipe at the inverted T-shaped mouth of a river is connected with two inclined split channels, and split channel connects with horizontal cloth flow tube again respectively
Connect, molten steel first passes around split channel by pipe of betting and is divided into horizontal cloth overflow pipe, and then molten steel is from cloth overflow pipe cloth stream.This two
Impact of collision when class cloth flowing water mouth reduces molten steel bet to molten bath, but spade cloth flowing water mouth effect is poor compared with the inverted T-shaped mouth of a river,
Although the inverted T-shaped mouth of a river is preferable to longitudinal molten steel impact improvement, horizontal cloth overflow pipe, molten steel are arrived again by two split channels
It is uneven in horizontal cloth overflow pipe cloth stream, it is also steadily unfavorable to molten bath.
Publication number CN103357828A discloses a kind of twin-roll thin strip continuous casting casting system and its application method, the casting
System includes immersion cloth flowing water mouth and current distribution device, and immersion cloth flowing water mouth is made up of inflow segment, changeover portion and outflow section, flowed out
Section is divided into contraction section and expansion segment from top to bottom, and expansion segment is fan-shaped wedge-shaped flat, provided with tapping hole.The cloth manifold formula needs
One special cloth flowing water mouth connection middle water containing opening, immersion cloth flowing water mouth add current distribution device to combine higher, the molten steel of height
Drop increases, limited to the uniform effect of upper steel water flow stationary by the symmetrical training dyke in two groups of current distribution device center both sides.
The content of the invention
It is a primary object of the present invention to provide a kind of thin-belt casting rolling casting system and its casting method, it is intended to reduce molten steel
Impact of the casting cycle to molten bath, while realize the quiet pouring of molten steel.
To achieve the above object, the present invention provides a kind of thin-belt casting rolling casting system, including cloth flowing water mouth and tundish, institute
State the bottom that cloth flowing water mouth is seal-installed on tundish, the cloth flowing water mouth be provided with cavity volume and connected with the cavity volume it is multiple go out
Steel hole, the upper opening portion of the cavity volume is big and the section that is in the shape of the letter V is shunk in middle and lower part, and the bottom of the cloth flowing water mouth offers kerve,
Cloth flowing water mouth length direction is provided with multiple training dykes on kerve, the top of the training dyke is higher than the top of tapping hole
End, the height of the tapping hole are higher than kerve.
Preferably, multiple training dykes are uniformly distributed in cloth flowing water mouth length direction, and multiple tapping holes are in cavity volume both sides
It is arranged symmetrically.
Preferably, the both sides of the training dyke are provided with two tapping holes.
Preferably, the tapping hole tilts upward setting, and the center line of the short transverse of the cavity volume is its axis, institute
It is 45 ° ~ 60 ° to state angle between the axis of tapping hole and the axis of cavity volume.
Preferably, the top of the training dyke is the circular arc that both sides are high and middle part is low.
Preferably, the tundish is provided with circular middle water-coating port and the conversion mouth of a river connected with water-coating port in this, in
Water-coating port is provided with the middle bag stopper for being used for adjusting molten steel flow, and the cross sectional shape that the conversion mouth of a river is located at tundish outlet side is
Rectangle.
Preferably, the gas shield device for being passed through inert gas into molten steel is also equipped with the conversion mouth of a river.
Preferably, the gas outlet of the gas shield device is positioned at the conversion height region below of the mouth of a river 1/2.
Preferably, the bottom of the tundish is provided with the strip-shaped clamp groove for being used for installing cloth flowing water mouth.
Present invention further propose that a kind of casting method based on above-mentioned thin-belt casting rolling casting system, including following step
Suddenly：
Bag stopper in lifting, water-coating port in opening, therefrom water-coating port is cast to the conversion mouth of a river to molten steel, and molten steel dropping process is by circle
Distribution becomes cloth flowing water mouth-shaped；
Molten steel is assembled in cloth flowing water mouth kerve, and as liquid level rises to tapping hole, molten steel enters from tapping hole outflow cloth flowing water mouth
In the molten bath that Casting Roller is formed；
Molten metal pool level is gradually increasing, and after after molten steel, liquid level reaches regulation liquid level in molten bath, adjustment Casting Roller rotating speed makes it
Match with molten steel from tundish poring rate, with stabilised bath liquid level.
Thin-belt casting rolling casting system proposed by the present invention, using cloth flowing water mouth and middle water containing opening close fit, cloth
Flowing water mouth is directly immersed in formula Casting Roller molten bath, reduces molten steel casting cycle and is grown from tundish through cloth flowing water mouth to casting molten bath
Degree, so as to reduce impact of the molten steel casting cycle to molten bath.In addition, reserving kerve and training dyke in cloth flowing water mouth bottom, make steel
Water floats to tapping hole from bottom, further improves the quiet pouring of molten steel, it is ensured that molten steel is disturbed thin-belt casting rolling bath surface
Fluctuation is smaller.Meanwhile its simple in construction, reliable operation of this thin-belt casting rolling casting system and easy to use.
Brief description of the drawings
Fig. 1 is the configuration diagram of thin-belt casting rolling casting system of the present invention；
Fig. 2 is the sectional view of cloth flowing water mouth in thin-belt casting rolling casting system of the present invention；
Fig. 3 is sectional view of the cloth flowing water mouth shown in Fig. 2 in A-A directions.
In figure, in figure, 1- chuck, 2- cavity volumes, 3- training dykes, 4- tapping holes, 5- kerves, 6- tundish, bag stopper in 7-,
Water-coating port in 8-, the 9- conversions mouth of a river, 10- fixing devices, 11- gas shield devices.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
It should be noted that in the description of the invention, term " transverse direction ", " longitudinal direction ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of the description present invention and simplifies description, is not instruction or implies signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the invention
System.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction or hint relative importance.
The present invention proposes a kind of thin-belt casting rolling casting system.
Referring to figs. 1 to Fig. 3, in this preferred embodiment, a kind of thin-belt casting rolling casting system, including cloth flowing water mouth and tundish
6, cloth flowing water mouth is seal-installed on the bottom of tundish 6, cloth flowing water mouth be provided with cavity volume 2 and connected with the cavity volume 2 it is multiple go out
Steel hole 4, the upper opening portion of the cavity volume 2 is big and the section that is in the shape of the letter V is shunk in middle and lower part, and the bottom of cloth flowing water mouth offers kerve 5,
Cloth flowing water mouth length direction is provided with multiple training dykes 3 on kerve 5, the top of training dyke 3 is higher than the top of tapping hole 4,
The height of tapping hole 4 is higher than kerve 5.
Specifically, in the present embodiment, tapping hole 4 tilts upward setting（Refer to tapping hole 4 relative to the outside height of cavity volume 2
It is high）, the center line of the short transverse of cavity volume 2 is its axis, and angle is between the axis of tapping hole 4 and the axis of cavity volume 2
45°~60°.The both sides of training dyke 3 are provided with two tapping holes 4（I.e. training dyke 3 divides the tapping hole 4 of the same side of cavity volume 2 one by one
Separate and）.The conversion mouth of a river 9 uses identical die cavity with the interface of cloth flowing water mouth, and seals cooperation.The material of cloth flowing water mouth is not
Limit.The parameters such as the specific size of cloth flowing water mouth, the quantity of training dyke 3 and size become according to Casting Roller size, and design parameter is not
Limit.In the present embodiment, kerve 5 is set in cloth flowing water mouth, is on the one hand used to cache upper steel water slug, is on the other hand used to stockpile
Molten steel makes molten steel is stable to be flowed out from tapping hole 4.
Further, multiple training dykes 3 are uniformly distributed in cloth flowing water mouth length direction, and multiple tapping holes 4 are in the both sides of cavity volume 2
It is arranged symmetrically, so as to realize cloth flowing water mouth quiet pouring.
Further, the top of training dyke 3 is the circular arc that both sides are high and middle part is low.
Tundish 6 is provided with circular middle water-coating port 8 and the conversion mouth of a river 9 connected with water-coating port in this 8, middle water-coating port 8
Provided with the middle bag stopper 7 for adjusting molten steel flow, change the mouth of a river 9 and be located at the cross sectional shape of the outlet side of tundish 6 into rectangle.
Changing the mouth of a river 9 can be used as independent workpiece to load from the bottom of tundish 6, will by the chuck 1 and fixing device 10 of cloth flowing water mouth
It is compressed.Certainly, the conversion mouth of a river 9 can also be built by laying bricks or stones with the global formation of middle water-coating port 8 of tundish 6, because changing the life-span at the mouth of a river 9
It is longer, quick-replaceable cloth flowing water mouth when this structure is easy to production operation.
Further, the gas shield device 11 being also equipped with the mouth of a river 9 for being passed through inert gas into molten steel is changed.
1/2 height region below of the gas outlet of the gas shield device 11 positioned at the conversion mouth of a river 9.In the present embodiment, gas shield dress
Tracheae trend and venthole the number of openings are unlimited in putting 11.By setting gas shield device 11, casting cycle whole process is realized
Inert gas shielding, so as to ensure that from open pour when molten steel just through cloth flowing water mouth quiet pouring.
Further, the bottom of tundish 6 is provided with the strip-shaped clamp groove for being used for installing cloth flowing water mouth.Among the insertion of cloth flowing water mouth
In the strip-shaped clamp groove of bag 6, to load the bottom of tundish 6, cloth flowing water mouth is fastened by fixture or bolt, makes cloth flowing water mouth and centre
The conversion mouth of a river 9 for wrapping 6 bottoms is supporting.
The use process of this thin-belt casting rolling casting system is as follows.When molten steel prepares casting, bag stopper 7 in lifting, in opening
Water-coating port 8, therefrom water-coating port 8 is cast to the conversion mouth of a river 9 to molten steel, becomes the cloth flowing water degree of lip-rounding by circular distribution in molten steel dropping process
Shape, molten steel are gradually assembled in the kerve 5 of cloth flowing water mouth, and after the tapping hole 4 of cloth flowing water mouth is risen to liquid level, molten steel is through tapping
Flow out cloth flowing water mouth and enter in the molten bath that Casting Roller is formed in hole 4；Because of molten steel, therefrom 8 initial pouring flow rate of water-coating port is more than cloth flowing water
Mouthful outflow flow, therefore molten steel is gradually increasing in cloth flowing water mouth and Casting Roller molten metal pool level, treat molten steel in molten bath liquid level through inspection
After survey reaches regulation liquid level, adjustment Casting Roller rotating speed makes it match with molten steel from the poring rate of tundish 6, with stable molten
Pit level.
The thin-belt casting rolling casting system that the present embodiment proposes, using cloth flowing water mouth and the mouth of a river close fit of tundish 6,
Cloth flowing water mouth is directly immersed in formula Casting Roller molten bath, reduces molten steel casting cycle from tundish 6 through cloth flowing water mouth to casting molten bath
Length, so as to reduce impact of the molten steel casting cycle to molten bath.In addition, kerve 5 and training dyke 3 are reserved in cloth flowing water mouth bottom,
Molten steel is floated to tapping hole from bottom, further improve the quiet pouring of molten steel, it is ensured that molten steel is to thin-belt casting rolling bath surface
Disturbance fluctuation is smaller.Meanwhile its simple in construction, reliable operation of this thin-belt casting rolling casting system and easy to use.
A kind of present invention further propose that casting method of thin-belt casting rolling casting system.
In this preferred embodiment, a kind of casting method based on above-mentioned thin-belt casting rolling casting system, comprise the following steps：
Bag stopper in lifting, water-coating port in opening, therefrom water-coating port is cast to the conversion mouth of a river to molten steel, and molten steel dropping process is by circle
Distribution becomes cloth flowing water mouth-shaped；
Molten steel is assembled in cloth flowing water mouth kerve, and as liquid level rises to tapping hole, molten steel enters from tapping hole outflow cloth flowing water mouth
In the molten bath that Casting Roller is formed；
Molten metal pool level is gradually increasing, and after after molten steel, liquid level reaches regulation liquid level in molten bath, adjustment Casting Roller rotating speed makes it
Match with molten steel from tundish poring rate, with stabilised bath liquid level.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure transformation that bright specification and accompanying drawing content are made, or other related technical areas are directly or indirectly used in,
Similarly it is included within the scope of the present invention.
Claims (10)
1. a kind of thin-belt casting rolling casting system, including cloth flowing water mouth and tundish, it is characterised in that the cloth flowing water mouth sealing peace
Bottom loaded on tundish, the cloth flowing water mouth is provided with cavity volume and the multiple tapping holes connected with the cavity volume, the cavity volume are opened
Mouth top is big and the section that is in the shape of the letter V is shunk in middle and lower part, and the bottom of the cloth flowing water mouth offers kerve, along cloth stream on kerve
Mouth of a river length direction is provided with multiple training dykes, and the top of the training dyke is higher than the top of tapping hole, the height of the tapping hole
Degree is higher than kerve.
2. thin-belt casting rolling casting system as claimed in claim 1, it is characterised in that multiple training dykes are long in cloth flowing water mouth
Degree direction is uniformly distributed, and multiple tapping holes are arranged symmetrically in cavity volume both sides.
3. thin-belt casting rolling casting system as claimed in claim 1, it is characterised in that the both sides of the training dyke are provided with two
Tapping hole.
4. thin-belt casting rolling casting system as claimed in claim 1, it is characterised in that the tapping hole tilts upward setting, institute
The center line for stating the short transverse of cavity volume is its axis, and angle is between the axis of the tapping hole and the axis of cavity volume
45°~60°。
5. thin-belt casting rolling casting system as claimed in claim 1, it is characterised in that the top of the training dyke be both sides it is high and
The low circular arc in middle part.
6. thin-belt casting rolling casting system as claimed in claim 1, it is characterised in that the tundish is provided with circular middle Bao Shui
Mouth and the conversion mouth of a river connected with water-coating port in this, middle water-coating port is provided with the middle bag stopper for being used for adjusting molten steel flow, described
Change the mouth of a river and be located at the cross sectional shape of tundish outlet side into rectangle.
7. thin-belt casting rolling casting system as claimed in claim 6, it is characterised in that be also equipped with being used on the conversion mouth of a river
The gas shield device of inert gas is passed through into molten steel.
8. thin-belt casting rolling casting system as claimed in claim 7, it is characterised in that the gas outlet of the gas shield device is located at
Change the height region below of the mouth of a river 1/2.
9. thin-belt casting rolling casting system as claimed in claim 1, it is characterised in that the bottom of the tundish, which is provided with, to be used to pacify
Fill the strip-shaped clamp groove of cloth flowing water mouth.
10. a kind of casting method of the thin-belt casting rolling casting system based on described in claim 1, it is characterised in that including following
Step：
Bag stopper in lifting, water-coating port in opening, therefrom water-coating port is cast to the conversion mouth of a river to molten steel, and molten steel dropping process is by circle
Distribution becomes cloth flowing water mouth-shaped；
Molten steel is assembled in cloth flowing water mouth kerve, and as liquid level rises to tapping hole, molten steel enters from tapping hole outflow cloth flowing water mouth
In the molten bath that Casting Roller is formed；
Molten metal pool level is gradually increasing, and after after molten steel, liquid level reaches regulation liquid level in molten bath, adjustment Casting Roller rotating speed makes it
Match with molten steel from tundish poring rate, with stabilised bath liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646124.0A CN107498034A (en) | 2017-08-01 | 2017-08-01 | Thin-belt casting rolling casting system and its casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646124.0A CN107498034A (en) | 2017-08-01 | 2017-08-01 | Thin-belt casting rolling casting system and its casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107498034A true CN107498034A (en) | 2017-12-22 |
Family
ID=60690002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710646124.0A Pending CN107498034A (en) | 2017-08-01 | 2017-08-01 | Thin-belt casting rolling casting system and its casting method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107498034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480578A (en) * | 2018-04-03 | 2018-09-04 | 青岛正望钢水控制股份有限公司 | A kind of twin-roll thin strip continuous casting casting system, current distribution device and casting method |
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|---|---|---|---|---|
| KR19980045936U (en) * | 1996-12-27 | 1998-09-25 | 김종진 | Molten Steel Supply Nozzle for Sheet Casting |
| KR20000040959A (en) * | 1998-12-21 | 2000-07-15 | 이구택 | Immersing nozzle for double-roll type thin plate casting machine |
| CN102350487A (en) * | 2011-11-15 | 2012-02-15 | 青岛云路新能源科技有限公司 | Nozzle cup |
| CN202180180U (en) * | 2011-06-29 | 2012-04-04 | 宝山钢铁股份有限公司 | Thin strip continuous casting stream distribution device |
| US20130092343A1 (en) * | 2011-05-06 | 2013-04-18 | Nucor Corporation | Casting thin strip and delivery nozzle therefor |
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2017
- 2017-08-01 CN CN201710646124.0A patent/CN107498034A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980045936U (en) * | 1996-12-27 | 1998-09-25 | 김종진 | Molten Steel Supply Nozzle for Sheet Casting |
| KR20000040959A (en) * | 1998-12-21 | 2000-07-15 | 이구택 | Immersing nozzle for double-roll type thin plate casting machine |
| US20130092343A1 (en) * | 2011-05-06 | 2013-04-18 | Nucor Corporation | Casting thin strip and delivery nozzle therefor |
| CN202180180U (en) * | 2011-06-29 | 2012-04-04 | 宝山钢铁股份有限公司 | Thin strip continuous casting stream distribution device |
| CN102350487A (en) * | 2011-11-15 | 2012-02-15 | 青岛云路新能源科技有限公司 | Nozzle cup |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480578A (en) * | 2018-04-03 | 2018-09-04 | 青岛正望钢水控制股份有限公司 | A kind of twin-roll thin strip continuous casting casting system, current distribution device and casting method |
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