CN208178389U - A kind of twin-roll thin strip continuous casting casting system and current distribution device - Google Patents
A kind of twin-roll thin strip continuous casting casting system and current distribution device Download PDFInfo
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- CN208178389U CN208178389U CN201820463212.7U CN201820463212U CN208178389U CN 208178389 U CN208178389 U CN 208178389U CN 201820463212 U CN201820463212 U CN 201820463212U CN 208178389 U CN208178389 U CN 208178389U
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Abstract
The utility model relates to a kind of twin-roll thin strip continuous casting casting current distribution devices, including inner cavity and exocoel, the inner cavity is surrounded by internal chamber wall, the exocoel is surrounded by outer chamber wall, it is interconnected between the inner cavity and exocoel by the channel of bottom, the outer chamber wall is equipped with the advection mouth flowed out for metal liquid, and advection open height is lower than edge on internal chamber wall.The utility model changes existing traditional twin-roll thin strip forming method, does not crystallize " molten bath ", without side seal board, not only phenomena such as " bleed-out " can will not occurs with save the cost.
Description
Technical field
The utility model relates to continuous casting of metal field, especially a kind of twin-roll thin strip continuous casting casting current distribution device.
Background technique
Twin-roll thin strip continuous casting is using the Casting Roller of two opposite directions rotation as crystallizer, the more of red-hot metal liquid
Excess heat is taken away, and by solidifying and rolling the effect of conjunction, directly produces the high-efficient production technology of 0.5 ~ 7mm metal sheet band.It has
Process is short, small investment, energy saving, low in cost, product have the advantage of special construction and performance, is most to compete 21 century
The near net shape continuous casting production new technology of power.
Twin-roll thin strip continuous casting technique had not only had any different but also had been related with traditional continuous casting, and technique is by the metal liquid of tundish
Current distribution device is injected by soaking water gap, then is assigned in the crystallisation vessel being made of crystallization roll and side seal board by current distribution device, is formed
" molten bath ", high temperature metal liquid solidify gradually in the crystal roller surface of rotation, and form metal sheet band by squeezing.Strip product
Can the quality or even casting machine of quality operate normally the state with flow field in " molten bath ", and the distribution in temperature field, the fluctuation of liquid level is all
It is directly related, therefore reasonable cloth streaming system is of great significance to twin-roll thin strip continuous casting.
Just because of Double-roller thin-strip continuous casting stream distribution status is so important, everybody has put into a large amount of energy and has done many
It explores and research, such as United States Patent (USP) 6,073,680,5,587,514,6,125,917,6,012,508 current distribution device is like small
Middle packet, the molten metal entered by middle packet stream by distributor one arrangement discharge orifice be injected into current distribution device.Japan Patent
The flat rapid plate of the bottom JP1317658 aperture provided with there are many, for stablizing the flow of liquid metal of inflow " molten bath ", with reduction pair
Crystallization roll and green shell are washed away.Chinese patent 01276402.7,02283420.6 is a hatch frame, passes through two sides and both ends
Cloth discharge orifice reaches cloth stream purpose.Although they are each has something to recommend him, there is the distinctive feature of oneself in one aspect, has common
Feature: being placed in below middle packet, and metal liquid flows into current distribution device by distributor, empty by metal liquid by what is be arranged on current distribution device
The crystallisation vessel that side seal board is formed is injected, such mode has the disadvantage that: (1) current distribution device occupies the useful space of crystallisation vessel
Greatly, liquid level is vulnerable to disturbance fluctuation.(2) flow field in crystallisation vessel is not easy to control.(3) temperature field in crystallisation vessel is uneven.
This several can all influence product quality and production direct motion.In addition, (4) all be unable to do without side seal board, not only increase cost, but also not easily-controllable
It makes, the metal condensation at side seal board is often an important factor for influencing quality and direct motion.
Utility model content
Problem to be solved in the utility model is to provide a kind of twin-roll thin strip continuous casting casting current distribution device.
The current distribution device in order to solve the above technical problems, twin-roll thin strip continuous casting of the utility model is cast, including inner cavity and exocoel,
The inner cavity is surrounded by internal chamber wall, and the exocoel is surrounded by outer chamber wall, mutual by the channel of bottom between the inner cavity and exocoel
It is connected, the outer chamber wall is equipped with the advection mouth flowed out for metal liquid, and advection open height is lower than edge on internal chamber wall.
The exocoel is arranged in inner cavity two sides.
The channel is the strip hole or circular hole being arranged on internal chamber wall.
Foot wedges are set below the exocoel.
The section of the foot wedges is isosceles triangle, and apex angle is 30-90 degree.
Filter screen is arranged in the exocoel.
The utility model further relates to a kind of twin-roll thin strip continuous casting casting system, including submersed nozzle, current distribution device and casting
Roller, the current distribution device include inner cavity and exocoel, and the inner cavity is surrounded by internal chamber wall, and the exocoel is surrounded by outer chamber wall, described interior
It is interconnected between chamber and exocoel by the channel of bottom, the outer chamber wall is equipped with the advection mouth flowed out for metal liquid.
The outer chamber wall is arranged in inner cavity two sides.
The channel is the strip hole or circular hole being arranged on internal chamber wall.
Foot wedges are set below the exocoel.
The section of the foot wedges is isosceles triangle, and apex angle is 30-90 degree.
Filter screen is arranged in the exocoel.
The utility model further relates to a kind of twin-roll thin strip continuous casting casting method, and metal liquid is supplied by submersed nozzle
To current distribution device inner cavity, metal liquid enters exocoel by the channel of bottom between current distribution device inner cavity and exocoel, the metal in exocoel
Liquid goes up from exocoel bottom, from the advection mouth outflow on the outer wall of exocoel, along the outside of outer wall to flowing down, forms uniform stream
Waterfall, two effluent waterfalls merge into a metal stream waterfall in bottom end vertex, and flow to water cooling crystallization roll surface, quickly solidify, then
It is pressed by double-roller rolling, certain thickness metal sheet band product can be produced.
The utility model patent changes existing traditional twin-roll thin strip forming method, does not crystallize " molten bath ", correspondingly
Phenomena such as also avoiding many troubles of thus bring, being not in " bleed-out ", without considering further that such as liquid fluctuating, flow field is excellent
Change, metal bath surface condensation etc. influence product quality and hinder a series of problems of production direct motion.Metal stream waterfall can make high-temperature liquid
Body Homogeneouslly-radiating such as controls proper, overheat very little even zero when can make to contact crystallization roll, along with the Quench of roller is made
With being able to achieve " quickly solidification ", obtain the tiny isometric crystal structure of similar " chill ", realize the super saturated solid solution of solute, keep away
Exempt from component segregation, commonly solidifies the fine grained texture that can not be obtained, special texture to obtain, or even can obtain more specifically micro-
Brilliant, quasi-crystalline substance and amorphous structure, realize excellent physical and mechanical properties, meet specific use needs.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of the twin-roll thin strip continuous casting casting system of the utility model.
Fig. 2 is the transverse sectional view of the current distribution device of the utility model.
Fig. 3 is the longitudinal sectional view of the current distribution device of the utility model.
Fig. 4 is the usage state diagram of the current distribution device of the utility model.
Fig. 5 is the organizational topography of the product of traditional continuous casting process.
Fig. 6 is the organizational topography of the product of the thin band continuous casting technique of the prior art.
Fig. 7 is the organizational topography of the product of the continuous casting process of the utility model.
Specific embodiment
As shown in Figures 1 to 4, the twin-roll thin strip continuous casting casting system of the utility model, including submersed nozzle 1, cloth stream
Device 2 and Casting Roller 3, submersed nozzle 1 include that the upper inflow channel 11 of connection tundish and lower part go out circulation road 12, and lower part goes out
Circulation road includes the circulation road out of side and bottom, and submersed nozzle top is in " elongated tubular ", and function is influent stream flow-guiding channel,
The general left and right sides of circulation road is symmetrical arranged out.For submersed nozzle wall thickness substantially in 20 ~ 30mm, aluminium carbonaceous is can be used in the mouth of a river
Isostatic pressing.
Current distribution device 2 is a box overall structure, including inner cavity 21 and two exocoels 22, and the setting of exocoel 22 is 21 liang of inner cavity
Side, inner cavity 21 are surrounded by internal chamber wall 23, and exocoel 22 is surrounded by outer chamber wall 24, and the wall thickness of current distribution device cabinet is about in 30 ~ 50mm, and two
The outer wall of exocoel is below internal chamber wall, is interconnected between inner cavity 21 and exocoel 22 by the channel 25 of bottom, channel can be
23 bottom of internal chamber wall evenly distributed circular hole, elliptical aperture or square hole are set, the strip of 23 bottom of internal chamber wall, strip are also possible to
Length can be of same size with internal chamber wall 23.Outer chamber wall 24 is equipped with the advection mouth 26 flowed out for metal liquid, advection mouth
26 height are lower than edge on internal chamber wall 23.Advection mouth 26 can be set on the upper edge of outer chamber wall 24, that is to say, that outer chamber wall is in its side
The height in face 241 is lower than the height at its both ends 242.The upper edge hole of outer chamber wall is in the streamline shape convenient for molten metal advection, such as can
To be arc.Advection mouth 26 is also possible to the strip mouth opened up in outer chamber wall 24.
Foot wedges 27 are set below exocoel 22, and the section of foot wedges is isosceles triangle, and apex angle is 30-90 degree.?
That is the bottom end of current distribution device is in " wedge shape ", it is one " taper " that side, which is seen, and " wedge shape " apex angle is 30-90 degree.Such structure
It can be and be gathered together from the molten metal that two sides outer chamber wall 24 flows out in foot wedges, molten metal enters between two Casting Rollers.
Exocoel 22 can also be positioned only at 21 side of inner cavity.Molten metal is flowed out from side in this way, flows to current distribution device bottom.Compared with
Excellent scheme is two sides setting exocoel 22, because exocoel 22 only is arranged in side, when the molten metal of outflow flows to foot wedges 27,
Flow direction is easy in vertical direction with an angle, or is swung, to influence product quality.
Filter screen 28 is set in the position lower than advection mouth 26 in exocoel 22, filter screen can make the metal that will be flowed out
Liquid level stabilizing, it is not easy to generate height and rise and fall, keep metal stream 29 thickness of waterfall of outflow uniform.
The utility model further relates to a kind of twin-roll thin strip continuous casting casting method, current distribution device 2 is placed in below tundish, casting
3 top of roller, is supplied to current distribution device inner cavity by submersed nozzle for the metal liquid in tundish, metal liquid passes through current distribution device
The channel of bottom enters exocoel between inner cavity and exocoel, and the metal liquid in exocoel goes up from exocoel bottom, from the outer wall of exocoel
On the outflow of advection mouth form uniform stream waterfall 29 along the outside of outer wall to flowing down, two effluent waterfalls are merged into bottom end vertex
One metal stream waterfall 29, and water cooling crystallization roll surface is flowed to, it quickly solidifies, is pressed using double-roller rolling, can be produced
Certain thickness metal sheet band product.Entire cloth streaming system all in inert gas (argon gas or nitrogen) protection among.
It can control product thickness, its gold of the current distribution device of different size by the ratio of control poring rate and drawing speed
The width for belonging to the indent guide groove of liquid advection is also different, can control product width with this.
To guarantee lateral uniform in quality, it is desirable that the resistance to material surface that metal stream waterfall passes through will be stablized, uniformly；It is vertical to guarantee
To uniform in quality, there is the automatic control system of a set of matching poring rate and casting roll revolving speed.
The advantages of the utility model patent, is:
1. metal stream waterfall can make high-temp liquid Homogeneouslly-radiating, such as control proper, overheat is very when can make to contact crystallization roll
It is small by even zero, along with the chilling action of roller, it is able to achieve " quickly solidification ", obtains the tiny equiax crystal of similar " chill "
Structure realizes the super saturated solid solution of solute, avoids component segregation, commonly solidifies the fine grained texture that can not be obtained, spy to obtain
Different texture, or even more specifically crystallite, quasi-crystalline substance and amorphous structure can be obtained, it realizes excellent physical and mechanical properties, meets special
Different purposes needs.Fig. 5-7 be traditional continuous casting, the prior art thin strap continuous casting and the utility model thin strap continuous casting difference continuous casting
The product tissue topography of technique compares.
2. the utility model patent changes existing traditional twin-roll thin strip forming method, " molten bath " is not crystallized, accordingly
Ground also avoids many troubles of thus bring, and a. side seal is always current twin-roll thin strip continuous casting technical problem urgently to be resolved,
Many practitioners have put into a large amount of man power and material thus, and the forming method of the utility model citation is without side seal board, not only
The technical problem for perplexing people can be also set to be readily solved with save the cost.B. phenomena such as being not in " bleed-out ".C. it need not examine again
Considering liquid fluctuating, flow fieldoptimization, metal bath surface condensation etc. influences product quality and hinders a series of problems of production direct motion.
3. the characteristic value of different continuous casting modes compares.
Claims (10)
- The current distribution device 1. a kind of twin-roll thin strip continuous casting is cast, it is characterised in that: including inner cavity and exocoel, the inner cavity is enclosed by internal chamber wall At the exocoel is surrounded by outer chamber wall, is interconnected between the inner cavity and exocoel by the channel of bottom, in the outer chamber wall Equipped with the advection mouth flowed out for metal liquid, advection open height is lower than edge on internal chamber wall.
- The current distribution device 2. twin-roll thin strip continuous casting described in accordance with the claim 1 is cast, it is characterised in that: the exocoel is arranged in inner cavity Two sides.
- 3. twin-roll thin strip continuous casting casting current distribution device according to claim 2, it is characterised in that: the channel is including being arranged Strip hole or circular hole in cavity wall.
- The current distribution device 4. twin-roll thin strip continuous casting described in accordance with the claim 3 is cast, it is characterised in that: wedge is set below the exocoel Shape bottom.
- 5. twin-roll thin strip continuous casting casting current distribution device according to claim 4, it is characterised in that: the section of the foot wedges For isosceles triangle, apex angle is 30-90 degree.
- 6. a kind of twin-roll thin strip continuous casting casting system, it is characterised in that: described including submersed nozzle, current distribution device and Casting Roller Current distribution device includes inner cavity and exocoel, and the inner cavity is surrounded by internal chamber wall, and the exocoel is surrounded by outer chamber wall, the inner cavity and exocoel Between interconnected by the channel of bottom, the outer chamber wall is equipped with the advection mouth that flows out for metal liquid.
- 7. twin-roll thin strip continuous casting casting system according to claim 6, it is characterised in that: the exocoel is arranged in inner cavity two Side.
- 8. twin-roll thin strip continuous casting casting system according to claim 7, it is characterised in that: the channel is to be arranged in inner cavity Strip hole or circular hole on wall.
- 9. twin-roll thin strip continuous casting casting system according to claim 8, it is characterised in that: setting wedge shape below the exocoel Bottom.
- 10. twin-roll thin strip continuous casting casting system according to claim 9, it is characterised in that: the section of the foot wedges For isosceles triangle, apex angle is 30-90 degree.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820463212.7U CN208178389U (en) | 2018-04-03 | 2018-04-03 | A kind of twin-roll thin strip continuous casting casting system and current distribution device |
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| CN201820463212.7U CN208178389U (en) | 2018-04-03 | 2018-04-03 | A kind of twin-roll thin strip continuous casting casting system and current distribution device |
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| CN208178389U true CN208178389U (en) | 2018-12-04 |
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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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2018
- 2018-04-03 CN CN201820463212.7U patent/CN208178389U/en active Active
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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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266000 No. 1 Zhengwang Road, Jimo Environmental Protection Industrial Park, Qingdao City, Shandong Province Patentee after: Qingdao Zhengwang Material Co.,Ltd. Address before: 266000 No. 1 Zhengwang Road, Jimo Environmental Protection Industrial Park, Qingdao City, Shandong Province Patentee before: QINGDAO HIWORLD MOLTEN STEEL CONTROL CO.,LTD. |