CN110087802A - A kind of thin strip continuous casting strip steel cooling body and its cooling means - Google Patents
A kind of thin strip continuous casting strip steel cooling body and its cooling means Download PDFInfo
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- CN110087802A CN110087802A CN201680091699.4A CN201680091699A CN110087802A CN 110087802 A CN110087802 A CN 110087802A CN 201680091699 A CN201680091699 A CN 201680091699A CN 110087802 A CN110087802 A CN 110087802A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
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Abstract
A kind of thin strip continuous casting strip steel cooling body, multiple cooling groups (C1, C2 ..., Cn) are equipped in it, it include at least one cooling unit (1) in each cooling group, the type of cooling of the cooling unit in each cooling group is at least one of aerosol cooling, section cooling, jet cooling；Cooling unit is located at roller-way upside, downside, and the total road (2) of the collector including being connected to waterway pipe or gas path pipe and at least two collector branches (3) being connected with the total road of collector, collector branch road is equipped with multiple nozzles (4), collector is always equipped with the on-off switch (5) of control cooling unit on-off on the road, and the aperture control valve (6) of the flow of gas and liquid in control cooling unit is additionally provided on waterway pipe and gas path pipe.The cooling body realizes the control to the cooling velocity of strip, and has the effect of uniformly cooling down strip.It further include a kind of cooling means of thin strip continuous casting strip steel cooling body.
Description
The present invention relates to strip continuous casting technology fields, more particularly to the cooling means of a kind of thin strip continuous casting strip steel cooling body and the cooling body.
It is required currently, thin strap continuous casting is poured according to different steel grades, thin band continuous casting technique requires equipment that should meet different cooling velocity and coiling temperature control, to meet different steel grade production requirements.
Currently, the control type of cooling of strip mainly has section cooling, pressure injection cooling, spraying cooling, Water-Curta in Cooling, direct quenching and aerosol cooling etc..
Wherein, section cooling is cooled down by column water impact surface of steel plate, and water flow keeps laminar condition, can get very strong cooling capacity；Deficiency is cooling zone distance, there is certain distance between collector, and lateral inhomogeneous cooling is even, higher to water quality requirement, and nozzle is easy blocking, and the device is complicated, and late maintenance cost is larger, is suitable under strong cool condition.
Pressure injection cooling means is to spray water with certain pressure from drive nozzle, and jet stream is cooled down for turbulent condition and bump steel plate, its main feature is that penetrability is good, cooling efficiency is high, circulating water, the environment thicker suitable for vapor membrane；Deficiency is that uniformity is not high, and water consumption is big, and powder-refining with water is splashed seriously, and to the more demanding of water quality, hole for water spraying is easy blocking, is suitable under the conditions of chilling.
Spraying cooling is that water pressurizes, and is sprayed by spray orifice, impacts cooled surface of steel plate using droplet cluster to be cooled down, cooling uniformly relative to pressurized spray method, cooling capacity is stronger；Deficiency is to need higher pressure, and cooling velocity adjustable range is small, to the more demanding of water quality；At present using less.
Water-Curta in Cooling is that cooling water by slit injector forms smooth tentiform water flow, is ejected into surface of steel plate, and water flow keeps laminar condition, and adjustable cooling velocity range is small, and cooling zone is easy to maintain to the of less demanding of water quality apart from short；Deficiency is strip upper and lower surface and entire cooling
Area's inhomogeneous cooling is even, is difficult to control the water spray intensity distribution along steel plate width direction；Suitable for the cooling between the cooling or tandem mill rack on strip runout table.
Direct quenching, steel plate, which is directly immersed in water, to be quenched or is quickly cooled down, and cooling velocity is fast；Deficiency is that inhomogeneous cooling is even, and the adjustable range of cooling velocity is small, and applicable steel grade is limited, and water is larger；Add the steel plate of martensitic microstructure suitable for high-tensile (being higher than 600MPa), containing bainite.
Aerosol is cooling, is a kind of cooling technology of biphase gas and liquid flow using air and water directly friendship type nozzle.It utilizes water atomization principle, makes water is fog-like to be ejected into surface of steel plate, cooling uniformly cooling velocity adjustable range is big, and deficiency is that the device is complicated, requires strictly air and water, workshop fog is big, and equipment is easy to be corroded；The cooling capacity range extremely wide suitable for the water cooling from air-cooled to strong, is particularly suitable for continuous casting secondary cooling.
Since different strip cooling means has different coolant mechanisms, water flow is broken into drop, rapid endothermic gasification on droplet collision to hot strip steel by the cooling pneumatically of aerosol, to take away a large amount of heat, achievees the purpose that strip is cooling；But when aerosol cooling water throughput is larger, still there is remaining water film on strip, be air film layer between water film and hot strip steel, this layer of air film hinders the gasification of cooling water, plays reaction to heat transportation.Since aerosol cooling method is evenly distributed along strip width direction, conducive to control belt plate shape, aerosol cooling procedure itself is more complicated, temperature drop value of the strip after aerosol is cooling with it is closely related with steel band thickness, belt speed, air water flow, material specific heat, initial temperature and the coefficient of heat transfer etc..
Summary of the invention
Technical problem to be solved by the invention is to provide one kind can guarantee the cooling velocity of thin strip continuous casting strip steel and the cooling body and its cooling means of cooling effect and uniformity.
In order to solve the above-mentioned technical problem, present invention employs following technical solutions:
A kind of thin strip continuous casting strip steel cooling body, the cooling body is arranged on the horizontal roller of casting and rolling machine outlet, and between milling train mechanism and coiled body, multiple cooling groups are provided in the cooling body, it and include at least one cooling unit in each cooling group, and the type of cooling of the cooling unit in each described cooling group is at least one of aerosol cooling, section cooling, jet cooling；Wherein, the cooling unit is located at the roller-way upside, downside,
And the total road of the collector including being connected to waterway pipe or gas path pipe and at least two collector branches being connected with the total road of the collector, the collector branch road is equipped with multiple nozzles, each collector is always equipped with the on-off switch for turning on and off the cooling unit on the road, and the aperture control valve of the flow of gas and liquid in control cooling unit is additionally provided on the waterway pipe and the gas path pipe.
Wherein, the cooling body includes in slightly cold section for thick cold thick cold section of cooling body；In the thick cold section of cooling body in the cooling unit of each cooling group, at least there are three the collectors of cooling unit always to route the aperture control valve control.
Wherein, the cooling body further includes the fine cold-leg cooling body that cold sperm is used in fine cold-leg；In the fine cold-leg cooling body in the cooling unit of each cooling group, at most there are two the collectors of cooling unit always to route the aperture control valve control.
Wherein, it is additionally provided with homogenizer on the gas path pipe or the waterway pipe, with the cooling velocity of equal control each described thick cold section and fine cold-leg.
Wherein, the nozzle difference fissure of displacement arrangement of ipsilateral two adjacent collector branch roads in the cooling unit.
Wherein, the interface structure between the total road of the collector and each collector branch is identical, and the total road of each collector is identical as the interface structure between waterway pipe or gas path pipe.
Wherein, the shape of the nozzle is rectangle or oblateness, and the side of wherein one group of opposite side of the rectangle is arc-shaped.
Wherein, each on-off switch is that on-off controls solenoid valve.
Wherein, the range of the nozzle height of collector branch road on the upside of the roller-way is 80mm-750mm, the range of the nozzle height of collector branch road on the downside of the roller-way is 50mm-550mm, and the spacing range between the two adjacent nozzles in collector branch road on the upside of the roller-way is 50mm-700mm, the spacing range between the two adjacent nozzles in collector branch road on the downside of the roller-way is 50mm-500mm.
Wherein, the cooling medium in the waterway pipe includes water, and the cooling medium in the gas path pipe includes at least one of aerosol, air, nitrogen or other gases.
Wherein, the aperture control valve and on-off switch of each cooling group are electrically connected with a control unit, with to the aperture control valve aperture and the on-off switch turn on and off progress
It adjusts.
Wherein, the speed detector of the temperature-detecting device of the temperature of the strip of real-time detection thereon and the movement speed of the detection strip is additionally provided on the roller-way, the temperature-detecting device and speed detector are also communicated to connect with described control unit.
The present invention also provides a kind of cooling means based on above-mentioned thin strip continuous casting strip steel cooling body, comprising the following steps:
S1: requiring according to the technique of thin strip continuous casting strip steel, configures cooling group and the number and the type of cooling of its interior cooling unit, and the type of cooling includes that cooling aerosol, section cooling and jet are cooling；
S2: according to the type of cooling configured in step S1, cooling unit is connected on corresponding waterway pipe or gas path pipe；
S3: according to the configuration of step S1-S2, control unit controls the aperture of the aperture control valve for each cooling group being connected electrically and turning on and off for on-off switch, and carries out cooling down operation；
S4: when completing cooling down operation, each on-off switch and aperture control valve are closed.
Wherein, step S3 may further comprise: that the temperature information for the strip that the temperature-detecting device being arranged on roller-way is detected is sent to control unit, and the velocity information that the strip that the speed detector on roller-way is detected is arranged in is sent to control unit, described control unit is according to received temperature information and velocity information, to the feedforward control of aperture control valve and on-off switch progress pressure or flow in each cooling group.
Wherein, step S3 may further comprise: that the coiled body positioned at the side of the cooling body is measured in real time the coiling temperature of the strip, and the temperature information detected is sent to the control unit for communicating with connection, described control unit is by the way that received temperature information to be compared with coiling temperature scheduled in it, and feedback control is carried out according to the comparison result, to adjust the aperture of aperture control valve and turning on and off for on-off switch.
Wherein, in step sl, it further include that the cooling section of cooling body is divided into thick cold section and fine cold-leg, and in step s 2 further include: each cooling unit is connected on corresponding waterway pipe or gas path pipe according to the division of the cooling section in step S1, wherein, in the cooling unit in thick cold section of the cooling group, at least there are three cooling unit by an aperture control
Valve co- controlling processed；In the cooling unit of the fine cold-leg, at most there are two cooling units by an aperture control valve co- controlling.
Compared with prior art, the beneficial effects of the present invention are:
1, each cooling group in cooling body of the invention can cool down strip using the different types of cooling, and the collector of cooling unit of the invention is always respectively communicated at least two collector branches on the road, and the total road of each collector is respectively equipped with on-off switch, on the basis of saving cost, it is also possible that being uniformly controlled each collector branch, cooling uniformity is realized；
2, the structure of connectivity port between the total road of collector of the invention and collector branch is identical (modularized design), and the total road of collector is identical as the specification of the connectivity port between waterway pipe or gas path pipe, therefore it can be required according to the technique of strip, the position of the type of cooling and cooling group to each cooling group is adjusted, to reach the cooling velocity and cooling effect that meet cooling curve；
3, needs are adjusted in order to obtain different pressure flow, height of each cooling unit apart from belt steel surface is adjustable, and the spacing of collector branch top nozzle can also change, thereby may be ensured that strip in the width direction on cooling uniformity；
4, the cooling section where cooling body can be divided into thick cold section and fine cold-leg by the present invention, be allocated with the type of cooling preferably to each cooling group；
5, the setting of homogenizer of the invention and aperture control valve, it is ensured that the uniformity on each collector total road and flow, pressure on collector branch further ensure that uniform cooling effect；
6, temperature-detecting device and fast reading detection device on roller-way are set in the present invention, and coiled body can in real time detect the temperature of strip and movement speed, and the control unit communicated to connect with aperture control valve and on-off switch can be according to temperature information and velocity information from temperature-detecting device and fast reading detection device and coiled body, turning on and off for aperture and on-off control valve to aperture control valve carries out feedforward and feedback regulation, to guarantee cooling body to the cooling temperature of thin strip continuous casting strip steel and the requirement of cooling velocity.
Fig. 1 is the position view of the thin strip continuous casting strip steel cooling body of the embodiment of the present invention；
Fig. 2 is the structure chart of the thin strip continuous casting strip steel cooling body of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the cooling group of the single group pipeline (water route or gas circuit) in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the cooling group of two groups of pipelines (water route and gas circuit) in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the cooling unit in another embodiment that the present invention is implemented；
Fig. 6 is the flow chart of the cooling means of the thin strip continuous casting strip steel cooling body of the embodiment of the present invention.
Description of symbols
The total road of 1- cooling unit 2- collector
3- collector branch 4- nozzle
5- on-off switch 6- aperture control valve
7- homogenizer 8- branch
100- cooling body 200- milling train mechanism
300- coiled body 400- pinch roller
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, but not as a limitation of the invention.
As shown in Figure 1, for the position view of the thin strip continuous casting strip steel cooling body of the embodiment of the present invention, wherein, cooling body 100 is arranged on the horizontal roller of milling train outlet, and between milling train mechanism 200 and coiled body 300, and as shown in Figure 1, between cooling body 100 and coiled body 300 and the front side of milling train mechanism 200 is also provided with multiple groups pinch roller 400, to clamp and convey strip and form certain tension；Wherein, milling train mechanism 200 is used to control the plate shape and thickness of strip, and coiled body 300 is then for making strip in rolls in favor of storing and convey.In addition, as shown in Figure 1, multiple cooling groups (C1, C2 ..., Cn) are provided in cooling body 100, and wherein in each cooling group including at least one cooling unit 1, it is cooling that the type of cooling of each cooling unit 1 can be cooling aerosol, section cooling or gas blowout, and the type of cooling of the cooling unit 1 in same cooling group can be the same or different, in order to meet required process requirements, the type of cooling of adjustable each cooling unit 1 or the cooling group of adjusting
Position；And it is corresponding, according to the selected type of cooling out, cooling unit 1 is configured with water route and/or gas circuit collector, to transmit gas and liquid respectively, cooling medium in the water route collector can be water, and the cooling medium in gas circuit collector can be at least one of air, nitrogen or other gases；Correspondingly, the cooling medium in waterway pipe can be water, the cooling medium in gas path pipe can be at least one of air, nitrogen or other gases.
As shown in Figure 2, for the structure chart of the cooling body of the embodiment of the present invention, wherein, it is along the direction of the arrow the transporting direction of strip, cooling group (the C1 of cooling body 100, C2, ..., Cn) it is respectively arranged at the upper side and lower side of strip (i.e. roller-way), that is, cooling unit 1 in the present embodiment includes being located on the upside of roller-way, the downside and collector for being connected to waterway pipe or gas path pipe total road 2 and at least two collector branches 3 that are connected with the total road 2 of collector, it is illustrated in figure 2 two collector branches 3, multiple nozzles 4 are distributed on collector branch 3, the on-off switch 5 in the water route and gas circuit for turning on and off cooling unit 1 is additionally provided on each total road 2 of collector, on-off control solenoid valve is such as used in this embodiment.The aperture control valve 6 for controlling the flow of gas and liquid in each cooling unit 1 is additionally provided on waterway pipe and gas path pipe, simultaneously, in order to guarantee the uniformity of cooling effect, nozzle 4 on ipsilateral two neighboring collector branch 3 in cooling unit 1 in the present embodiment distinguishes fissure of displacement arrangement, so that the liquid or gas that spray from nozzle 4 can be uniformly sprayed on strip, to guarantee uniform cooling effect.
The on-off switch 5 of the on-off of the road collector is controlled by being provided on the total road 2 of the collector of each cooling unit 1 in this present embodiment, without switch is arranged on each collector branch 3, both cost is saved, also ensures that the same of corresponding collector branch 3 opens with pass, to guarantee the uniformity of cooling effect.In addition, in a preferred embodiment, cooling body 100 includes the thick cold section of cooling body positioned at thick cold section and the fine cold-leg cooling body positioned at fine cold-leg, and in the cooling unit 1 of the cooling group in thick cold section of cooling body, at least there are three cooling unit 1 controlled by an aperture control valve 6；In cooling unit 1 in the cooling group of fine cold-leg cooling body, at most controlled there are two cooling unit 1 by an aperture control valve 6, the position of thick cold section of cooling body and fine cold-leg fine cold-leg cooling body can be interchanged and adjust simultaneously, to meet different cooling technique requirements；In cooling procedure, the type of cooling used by each cooling unit 1 also can change, to meet different cooling technique curve requirements.
In a preferred embodiment, it is additionally provided with homogenizer 7 on gas path pipe or the waterway pipe,
With flow and pressure in the collector group of each cooling unit of equal control；The design of homogenizer 7 can also guarantee thick cold section of cooling velocity uniformity, further the cooling velocity and cooling effect of effective control cooling body 100.
In addition, the total road 2 of collector is identical as the interface structure between each collector branch 3, and the total road 2 of each collector is identical as the interface structure between waterway pipe or gas path pipe in order to facilitate the component of each cooling unit 1 in the present embodiment or the position of each cooling unit 1 of replacement.Interface structure is identical, that is to say, that each collector branch 3 can have unified docking structure with the total road 2 of collector, and each collector branch 3 can replace mutually installation site；Similarly the total road 2 of each collector can also replace mutually installation site.Therefore, according to the technique to be met requirement, the type of cooling or cooling effect can be converted by exchanging the position of each cooling unit 1.
In addition, in a preferred embodiment, for different cooling units 1, spacing between the height of nozzle 4 and each nozzle 4 can be different, specifically, the range of the nozzle height on collector branch 3 on the upside of the roller-way is 80mm-750mm, the range of the nozzle height on collector branch 3 on the downside of the roller-way is 50mm-550mm, and the spacing range on the collector branch 3 on the upside of the roller-way between two adjacent nozzles 4 is 50mm-700mm, the spacing range on the collector branch 3 on the downside of the roller-way between two adjacent nozzles 4 is 50mm-500mm.
In addition, as shown in figure 3, the structural schematic diagram of the cooling group for the single group pipeline (water route or gas circuit) in the embodiment of the present invention.Wherein, due to the pipeline for single group, then it is only applicable to the transport in single water route or gas circuit, i.e. the type of cooling can be gas blowout cooling or section cooling, pass through cooling water and compressed gas progress cooling down operation with single.Simultaneously, in order to reinforce the present embodiment cooling effect uniformity, the shape that nozzle 4 in the embodiment of the present invention exports can be substantially rectangular or oblate, and wherein any one group of opposite side of the rectangle is arc-shaped, to avoid influencing each other between two adjacent nozzles 4, as shown in figure 3, A and B respectively indicate the nozzle 4 on two collector branches 3, due to being arranged alternately for nozzle 4, realizes the cooling liquid sprayed from nozzle 4 or gas is uniformly sprayed on strip.As can be seen that the spray effect (cooling effect) of each section of strip is essentially identical, to ensure that the uniformity of cooling effect from the spray effect of each nozzle 4 on two collector branches 3.
As shown in figure 4, the structural scheme of mechanism of the cooling group for the double groups of pipelines (water route and gas circuit) in the embodiment of the present invention.Wherein, solid line represents gas path pipe 8, and dotted line represents waterway pipe 9,
I.e. the type of cooling can be aerosol cooling, and aerosol is cooling to use air and water directly friendship type nozzle, is a kind of cooling technology of biphase gas and liquid flow, utilizes water atomization principle, the water surface of steel plate fog-like that is ejected into is made to have reached cooling effect.Wherein, the collector branch 3 in water route is connected to the collector branch 3 in gas path pipe, with keep gas by water in the nozzle 4 of collector branch 3 sprayed together with liquid, and generate atomization reaction, play cooling effect.As in one embodiment, cooling medium is aerosol, 5 cooling groups can be used, wherein 3 cooling groups are located at cold section thick, 2 cooling groups are located at fine cold-leg, cool contents in each thick cold section of cooling body do not include 10, 8, 6 cooling units 1, cooling group in fine cold-leg cooling body shares 12 cooling units 1, each cooling unit 1 includes 2 collector branches 3, 4 height of nozzle on the upside of strip is 350mm, the spacing between two nozzles 4 on same collector branch 3 is 400mm, 4 height of nozzle on the downside of strip is 180mm, the spacing between two nozzles 4 on same collector branch 3 is 180mm, it is 38 DEG C/s that average cooling rate, which may finally be reached, when 590 DEG C of coiling temperature, it can achieve preferable cooling uniformity on strip width direction.
In another embodiment, when using section cooling and aerosol cooling combined method, cooling medium is water and aerosol, including 2 groups of cooling groups, section cooling is respectively adopted and aerosol is cooling, it include 10 cooling units 1 using the cooling group of section cooling, it include 10 cooling units 1 using the cooling cooling group of aerosol, each cooling unit 1 includes 2 collector branches 3, 4 height of nozzle on the upside of strip is 390mm, the spacing between two nozzles 4 on same collector branch 3 is 440mm, 4 height of nozzle on the downside of strip is 150mm, the spacing between two nozzles 4 on same collector branch 3 is 150mm, 33 DEG C/s of average cooling rate may finally be reached, when coiling temperature is 620 DEG C, it can achieve preferable cooling on strip width direction Uniformity.
In another embodiment, when using the method that aerosol is cooling and gas blowout is cooling, the cooling medium in cooling section can be aerosol, nitrogen；When using 3 groups of cooling groups, it can be cooling using aerosol with 2 cooling groups, 1 cooling group is cooling using gas blowout, interior using the cooling cooling group of aerosol includes 6 cooling units, each cooling unit 1 includes 2 collector branches 3,4 height of nozzle on the upside of strip is 280mm, the spacing between two nozzles 4 on same collector branch 3 is 380mm, 4 height of nozzle on the downside of strip is 80mm, the spacing 100mm between two nozzles 4 on same collector branch 3,25 DEG C/s of average cooling rate may finally be reached
When 690 DEG C of coiling temperature, preferable cooling uniformity can achieve on strip width direction.
As shown in Figure 5, the structural schematic diagram for the cooling unit in another embodiment that the present invention is implemented, wherein, the configuration has the two kinds of collectors in water route and gas circuit, it can be used for being atomized cooling, collector branch 3 in the cooling unit 1 is configured to the branch 8 extended from the total road 2 of collector, and the outlet end of the branch 8 is arranged in the nozzle 4, to realize the ejection of gas or liquid.
In a preferred embodiment, the aperture control valve 6 in each cooling group and on-off switch 5 are electrically connected with a control unit (not shown), with to each aperture control valve 6 aperture and turning on and off for the on-off switch 5 be adjusted.In addition, may be provided for the temperature-detecting device of the temperature of the strip of real-time detection thereon on roller-way and detect the speed detector of the movement speed of strip, temperature-detecting device and speed detector are also communicated to connect with control unit.Configuration in this way, control unit can be in real time according to its received temperature information from temperature-detecting device and from the velocity information of speed detector, feedforward setting is carried out to the on-off switch 5 and aperture control valve 6 of each cooling group, to guarantee the uniformity of cooling effect.In addition, coiled body 300 positioned at the side of cooling body of the present invention is measured in real time the coiling temperature of strip, and the temperature information detected is sent to the control unit for communicating with connection, described control unit is by the way that received temperature information to be compared with coiling temperature scheduled in it, and it is fed back according to the comparison result, under aforementioned feedforward and coiling temperature feedback collective effect, the aperture of aperture control valve 6 and turning on and off for on-off switch 5 are controlled, final realize controls the real time temperature of strip.In addition, the present invention can also provide a kind of production line equipped with above-mentioned cooling body, the structure of the production line is substantially as shown in Figure 1.Cooling body 100 is arranged on the horizontal roller of milling train outlet, and between milling train mechanism 200 and coiled body 300, between cooling body 100 and coiled body 200 and the front side of milling train mechanism 200 is also provided with multiple groups pinch roller 400, to clamp and convey strip and strip is made to keep certain tension.；Wherein, milling train mechanism 200 is used to control the template and thickness of strip, and coiled body 300 is then for making strip in rolls in order to storing and convey.
As shown in fig. 6, the flow chart of the cooling means for the thin strip continuous casting strip steel cooling body of the embodiment of the present invention, comprising the following steps:
S1: requiring according to the technique of strip, configures cooling group and the number and the type of cooling of its interior cooling unit, and the type of cooling includes that cooling aerosol, section cooling and gas blowout are cooling；
S2: according to the type of cooling configured in step S1, the cooling unit of each cooling group is connected on corresponding waterway pipe or gas path pipe；
S3: according to the configuration of step S1-S2, control unit controls the aperture of the aperture control valve 6 for each cooling group being connected electrically and turning on and off for on-off switch, and carries out cooling down operation；S4；When completing cooling down operation, each on-off switch and aperture control valve 6 are closed.
In a preferred embodiment, step S3 can further include: the temperature information for the strip that the temperature-detecting device being arranged on roller-way is detected is sent to control unit, and the velocity information that the strip that the speed detector on roller-way is detected is arranged in is sent to control unit, described control unit is according to received temperature information and velocity information, to the aperture control valve 6 and the progress feedforward control of on-off switch 5 in each cooling group.
In addition, step S3 may further comprise: that the coiled body positioned at the side of the cooling body is measured in real time the coiling temperature of the strip, and the temperature information detected is sent to the control unit for communicating with connection, described control unit is by the way that received temperature information to be compared with coiling temperature scheduled in it, and turning on and off according to the aperture of the comparison result feedback control aperture control valve 6 and on-off switch 5.Pass through above-mentioned configuration, it may be implemented to the temperature of strip and the real time monitoring of movement speed and detection, and control unit can carry out feedforward control according to aperture control valve 6 and on-off switch 5 of the temperature and translational speed information received to cooling body, further to adjust the flow and pressure of liquid or gas in the total road 2 of each collector in each cooling unit 1 and collector branch 3, to be adjusted in real time to cooling effect.
Wherein, in step sl, it further include that the cooling section of cooling body is divided into thick cold section and fine cold-leg, and in step s 2 further include: each cooling unit is connected on corresponding waterway pipe or gas path pipe according to the division of the cooling section in step S1, wherein, in the cooling unit in thick cold section of the cooling group, at least there are three cooling unit by an aperture control valve co- controlling；In the cooling unit of the fine cold-leg, at most there are two cooling units by an aperture control valve co- controlling.
Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art can make various modifications or equivalent replacements to the present invention within the spirit and scope of the present invention, this modification or
Equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (16)
- A kind of thin strip continuous casting strip steel cooling body, the cooling body is arranged on the horizontal roller of casting and rolling machine outlet, and between milling train mechanism and coiled body, it is characterized in that, multiple cooling groups are provided in the cooling body, it and include at least one cooling unit in each cooling group, and the type of cooling of the cooling unit in each described cooling group is at least one of aerosol cooling, section cooling, gas blowout cooling；Wherein,The cooling unit is located at the roller-way upside, downside, and the total road of the collector including being connected to waterway pipe or gas path pipe and at least two collector branches being connected with the total road of the collector, the collector branch road is equipped with multiple nozzles, each collector is always equipped with the on-off switch for being turned on or off the cooling unit on the road, and the aperture control valve of the flow of gas and liquid in control cooling unit is additionally provided on the waterway pipe and the gas path pipe.
- Thin strip continuous casting strip steel cooling body according to claim 1, it is characterised in that: including being located in cold section thick for thick cold thick cold section of cooling body；In the thick cold section of cooling body in the cooling unit of each cooling group, at least there are three the collectors of cooling unit always to route the aperture control valve control.
- Thin strip continuous casting strip steel cooling body according to claim 2, it is characterised in that: be used for the fine cold-leg cooling body of cold sperm in fine cold-leg including being located at；In the fine cold-leg cooling body in the cooling unit of each cooling group, at most there are two the collectors of cooling unit always to route the aperture control valve control.
- Thin strip continuous casting strip steel cooling body according to claim 3, it is characterised in that: homogenizer is additionally provided on the gas path pipe or the waterway pipe, with the cooling velocity of equal control each described thick cold section and fine cold-leg.
- Thin strip continuous casting strip steel cooling body according to claim 1, it is characterised in that: the nozzle difference fissure of displacement arrangement of the ipsilateral two neighboring collector branch road in the cooling unit.
- Thin strip continuous casting strip steel cooling body according to claim 1, it is characterised in that: the total road of collector is identical as the interface structure between each collector branch, and the total road of each collector is identical as the interface structure between waterway pipe or gas path pipe.
- Thin strip continuous casting strip steel cooling body according to claim 1, it is characterised in that: substantially rectangular in shape or oblate, and wherein one group pair of the rectangle of the jet expansion The side of side is arc-shaped.
- Thin strip continuous casting strip steel cooling body according to claim 1, it is characterised in that: each on-off switch is that on-off controls solenoid valve.
- Thin strip continuous casting strip steel cooling body according to claim 1, it is characterized by: the range of the nozzle height of the collector branch road on the upside of the roller-way is 80mm-750mm, the range of the nozzle height of collector branch road on the downside of the roller-way is 50mm-550mm, and the spacing range between the two adjacent nozzles in collector branch road on the upside of the roller-way is 50mm-700mm, the spacing range between the two adjacent nozzles in collector branch road on the downside of the roller-way is 50mm-500mm.
- Thin strip continuous casting strip steel cooling body according to claim 1, it is characterised in that: the cooling medium in the waterway pipe includes water, and the cooling medium in the gas path pipe includes at least one of aerosol, air, nitrogen.
- Thin strip continuous casting strip steel cooling body according to claim 1, it is characterized by: the aperture control valve and on-off switch of each cooling group are electrically connected with a control unit, with to the aperture control valve aperture and turning on and off for the on-off switch be adjusted.
- Thin strip continuous casting strip steel cooling body according to claim 11, it is characterized by: being additionally provided with the speed detector of the temperature-detecting device of the temperature of the strip of real-time detection thereon and the movement speed of the detection strip on the roller-way, the temperature-detecting device and speed detector are also communicated to connect with described control unit；Described control unit is configured to carry out feed-forward regulation control to the aperture of the aperture control valve and turning on and off for the on-off switch according to received velocity information, temperature information.
- A kind of cooling means based on thin strip continuous casting strip steel cooling body described in any one of claim 1 to 12, it is characterised in that: the following steps are included:S1: requiring according to the technique of strip, configures cooling group and the number and the type of cooling of its interior cooling unit, and the type of cooling includes that cooling aerosol, section cooling and jet are cooling；S2: according to the type of cooling configured in step S1, cooling unit is connected on corresponding waterway pipe or gas path pipe；S3: according to the configuration of step S1-S2, control unit controls the aperture of the aperture control valve for each cooling group being connected electrically and turning on and off for on-off switch, and is cooled down Operation；S4: when completing cooling down operation, each on-off switch and aperture control valve are closed.
- Cooling means according to claim 13, it is characterized by: step S3 may further comprise: that the temperature information for the strip that the temperature-detecting device being arranged on roller-way is detected is sent to control unit, and the velocity information that the strip that the speed detector on roller-way is detected is arranged in is sent to control unit, described control unit is according to received temperature information and velocity information, to the aperture control valve and on-off switch progress feedforward control in each cooling group.
- Cooling means according to claim 13, it is characterized by: step S3 may further comprise: that the coiled body positioned at the side of the cooling body is measured in real time the coiling temperature of the strip, and the temperature information detected is sent to the control unit for communicating with connection, described control unit is by the way that received temperature information to be compared with coiling temperature scheduled in it, and feedback control is carried out according to the comparison result, to adjust the aperture of aperture control valve and turning on and off for on-off switch.
- Cooling means according to claim 13, it is characterized by: in step sl, it further include that the cooling section of cooling body is divided into thick cold section and fine cold-leg, and in step s 2 further include: each cooling unit is connected on corresponding waterway pipe or gas path pipe according to the division of the cooling section in step S1, wherein, in the cooling unit in thick cold section of the cooling group, at least there are three cooling unit by an aperture control valve co- controlling；In the cooling unit of the fine cold-leg, at most there are two cooling units by an aperture control valve co- controlling.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/112006 WO2018119550A1 (en) | 2016-12-26 | 2016-12-26 | Thin-strip continuously-cast band steel cooling mechanism and cooling method therefor |
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| Publication Number | Publication Date |
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| CN110087802A true CN110087802A (en) | 2019-08-02 |
| CN110087802B CN110087802B (en) | 2021-11-23 |
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| CN201680091699.4A Active CN110087802B (en) | 2016-12-26 | 2016-12-26 | Thin strip continuous casting strip steel cooling mechanism and cooling method thereof |
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| WO (1) | WO2018119550A1 (en) |
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| CN109457205B (en) * | 2019-01-04 | 2023-12-19 | 重庆赛迪热工环保工程技术有限公司 | Air humidifying and cooling method and cooling system for strip steel after plating |
| CN110202104B (en) * | 2019-05-27 | 2024-02-09 | 北京首钢国际工程技术有限公司 | Aerosol cooling device of 2+8 roller combined thick plate blank large-pressure casting and rolling machine |
| CN115717195A (en) * | 2021-08-27 | 2023-02-28 | 宝山钢铁股份有限公司 | Quenching cooling uniformity control method for intensive hot coil continuous heat treatment |
| CN114011181B (en) * | 2022-01-04 | 2022-04-01 | 唐山瑞丰钢铁（集团）有限公司 | Dust suppression device and method for hot coil box |
| CN114669613B (en) * | 2022-04-19 | 2023-06-20 | 安徽工业大学 | A flexible roll contact type combined cooling method for thin strips |
| CN115647077B (en) * | 2022-12-09 | 2023-04-18 | 首钢智新迁安电磁材料有限公司 | Cold continuous rolling unit for improving temperature control precision and control method thereof |
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| WO2018119550A1 (en) | 2018-07-05 |
| CN110087802B (en) | 2021-11-23 |
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