CN105149534B - A kind of method and device for controlling double-roll thin-belt continuous casting roller intensity of cooling - Google Patents
A kind of method and device for controlling double-roll thin-belt continuous casting roller intensity of cooling Download PDFInfo
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Abstract
A kind of method and device for controlling double-roll thin-belt continuous casting roller intensity of cooling, every casting roll have one or more water inlets and corresponding one or more water outlets, so as to form one or more individual cooling-water ducts inside casting roll；Cooling-water duct water outlet sets flow control valve；Cooling controller is according to the cooling water temperature t of each cooling-water duct water inlet of casting roll0, the flow q of water outlet cooling watern, temperature tn, pressure pn, calculate the heat Q that cooling water is taken away within the unit interval in each cooling-water duct in single casting rolln, cooling water is taken away within the unit interval in each cooling-water duct in every casting roll heat QnIt is identical；It will be according to total amount of heat ∑ QnAnd cooling water takes away the deviation of the desired value Q of heat within the unit interval in single casting roll cooling-water duct, adjusts the water flow q of cooling-water ductn, finally realize that the heat that the cooling water in every casting roll is taken away within the unit interval is identical with target calorie value Q.
Description
Technical field
The present invention relates to twin-roll thin strip continuous casting technique, more particularly to a kind of control double-roll thin-belt continuous casting roller intensity of cooling
Method.
Background technology
Twin-roll thin strip continuous casting technology typical production process is：Equably cloth stream in two opposite direction rotatings, leads to the molten steel of melting
Molten bath is formed in the space that the casting roll of water cooling and the baffle of ceramic material are surrounded, molten steel is solidified in roll surface, and in two castings
Thin Strip Steel is formed between roller.
As described in typical process, casting roll generally has the inlet and outlet of cooling water, and cooling water is led to by water inlet
Enter in roller, and enter in the cooling slot hole that roll surface lower section is arranged circumferentially along roll surface, cooling water flows through these coolings
The heat that molten steel is discharged when roll surface solidifies is taken away while slot hole, temperature increases, eventually by the water outlet in casting roll
Mouth is discharged to storage cistern, is reused after cooling.
Chinese patent CN102149491A provides a kind of method for controlling cooling water inside casting roll, in this method, passes through inspection
Survey the Cast Strip thickness profile in roll gap downstream, the electric signal received by control system from sensor controls the rotation of casting roll fast
Degree, and change the water flow temperature recycled via water stream channel, come the roller hat of casting roll during controlling casting manipulations.
Patent WO03055623A1 is provided a method, water is multiplied by by the casting roll water-in and water-out temperature difference measured
The heat (it thinks to be equal to the heat that cooling water is taken away) that molten steel solidification is discharged is obtained, and then is combined admittedly by computer system
Other Solidification Parameters having extrapolate the temperature of roll surface.Although this method also calculates cooling water using water temperature difference and water and takes away
Heat, but it has been used for counter pushing away roll surface temperature.
Invention content
The purpose of the present invention is to provide a kind of method and devices for controlling double-roll thin-belt continuous casting roller intensity of cooling, have
Good cooling effect can directly control the intensity of cooling of every casting roll, and can individually adjust each cooling water in casting roll
The intensity of cooling of channel, and then ensure the cooling uniformity of two casting rolls, adjusting method is rapid, means are reliable；Moreover, for water system
It unites simple and reliable, target flow can be rapidly reached；And pass through the flow for finely tuning each water outlet, can be that control system is fast
Speed reaches stable state.
To reach the purpose, the technical scheme is that：
A kind of double-roll thin-belt continuous casting roller, including roller core and roller set, roller set is using hot jacket connecting mode or mechanical attachment shape
Formula is combined together with roller core, wherein, roller set thickness is 55~100mm, on roller set, the position edge apart from 10~55mm of roll surface
Casting roll circumferentially uniformly opens up several slot holes parallel with casting roll axis, and, those slot holes are divided into upper and lower two layers of arrangement, long nose end
Portion is blocked by plug, wherein, the upper strata slot hole close to roll surface is cooling-water duct；
The long water hole of one or more water flowings is axially opened up in the end of roller core both ends and is radially opened up one or more and long
The entery and delivery port of water hole connection；The outer wall of roller core both ends and roller set adapter section be arranged symmetrically there are one or multiple annulars into and out of
Water catch basin, a water inlet of roller core one end is through long water hole and connection branch connection water inlet catch basin, catch basin of intaking
Roller is connected by the long inclined hole being evenly arranged in its upper rolls set and covers upper strata slot hole, the other end that upper strata slot hole is located in roller set leads to
Too short inclined hole connection lower floor slot hole, lower floor's slot hole by roller cover in the straight hole that is evenly arranged connect the water outlet in roller core other end portion
Catch basin, and the connection branch in roller core other end portion and long water hole are connected, the roller core other end is connected by long water hole
Water outlet.
Further, the water outlet of each cooling-water duct of casting roll, which is fitted with flow control valve, can individually adjust casting roll
The flow of cooling water in cooling-water duct, and can detect and export water flow qnSignal, while detection temperature t is also installedn
With hydraulic pressure pnElectrical signal detection device and corresponding signal input, output device.
Any one cooling-water duct inside casting roll all includes there are one water inlet and a water outlet, wherein, if
The inlet and outlet of same cooling-water duct can be respectively arranged in the both ends of casting roll inside casting roll, can also be arranged in casting
The same end of roller.The slot hole corresponding to any two cooling-water duct in same casting roll in the circumferentially-spaced distribution of casting roll, and
And the cooling water in adjacent slot hole is flowed on the contrary, and not connected.
Also, roller two ends of set are circumferentially with the annular protrusion for being sealed with side seal board, ledge width 10- along roll surface
20mm is highly 2-5mm.
A kind of method for controlling double-roll thin-belt continuous casting roller intensity of cooling, every casting roll have one or more water inlets and
Corresponding one or more water outlet, so as to form one or more individual cooling-water ducts inside casting roll.
Cooling-water duct water outlet sets flow control valve, individually adjusts the cooling water flow of cooling-water duct；Using adjustable pressure and
The water pump of flow provides cooling water to two casting rolls.
A kind of method of control double-roll thin-belt continuous casting roller intensity of cooling of the present invention, every casting roll have one or more
It water inlet and corresponding one or more water outlet and is arranged circumferentially below roll surface along roller outer circle
Several slot holes, one or more individual cooling-water ducts are correspondingly formed inside every casting roll；Lead in each cooling water
The water outlet in road is equipped with the flow for the cooling water that flow control valve can be adjusted individually in casting roll cooling-water duct；Using one
Or the water pump of multiple regulating flow quantities provides cooling water by same pipeline to two casting rolls, meanwhile, cooling controller monitoring is every
The inflow temperature t of a cooling-water duct0, water flow qn, leaving water temperature tn, discharge pressure pn, and thus calculate every casting roll
The heat Q that cooling water is taken away within the unit interval in interior each cooling-water ductn, it is cold accordingly by flow-rate adjustment valve regulation
But the water flow of aquaporin realizes what the cooling water in every casting roll in each cooling-water duct was taken away within the unit interval
Heat is identical；It then will be according to total amount of heat ∑ QnHeat is taken away within the unit interval with cooling water in single casting roll cooling-water duct
The deviation of the desired value Q of amount adjusts the water flow q of cooling-water ductn, finally realize the cooling water in every casting roll in unit
The interior heat taken away is identical with target calorie value.
Wherein, in casting cycle, the target heat Q that the cooling water that leads to inside two casting rolls is taken away within the unit interval is
One fluctuation range, the heat Q that should be taken away around the theoretically casting roll cooling water calculated according to casting process0Wave
It is dynamic, i.e.,：
Q∈[Q0±ΔQ]
Wherein：Δ Q is allowed deviation, and 2~3%.
The water outlet of each cooling-water duct of casting roll, which is fitted with flow control valve, can individually adjust casting roll cooling water
The flow of cooling water in channel, and can detect and export water flow qnSignal, while detection leaving water temperature t is also installedn
With discharge pressure pnElectrical signal detection device and corresponding signal input, output device.It is same using the water pump of regulating flow quantity
When to two casting rolls provide cooling waters, first, cooling controller control water pump reaches its goal pressure P, meanwhile, cooling controller
Monitor the inflow temperature t of each cooling-water duct in every casting roll0, water flow qn, leaving water temperature tn, discharge pressure pn, calculate
Cooling water in each cooling-water duct takes away heat Q within the unit intervaln, cooled down accordingly by flow-rate adjustment valve regulation
The water flow of aquaporin realizes the heat that the cooling water in single casting roll in each cooling-water duct is taken away within the unit interval
Measure it is identical, i.e.,：
Q1=Q2=Q3=... .=Qn, wherein, n=1,2,3......
If the total amount of heat ∑ Q that single casting roll cooling water is taken away within the unit intervalnThere is gap with target heat Q, then, and cooling
Output pressure P by slightly changing water pump is changed water supply flow, so that the cooling water of each cooling-water duct by controller
Flow qnVariation, finally so that the total amount of heat that cooling water is taken away in single casting roll reaches target heat Q, i.e.,：
Q=∑s Qn, wherein, n=1,2,3.......
Wherein, the heat that two casting rolls are taken away by cooling water within the unit interval can be identical or differ.
Cooling water takes away heat Q in each cooling-water ductn, target heat that the cooling water that leads to inside casting roll is taken away
The heat Q that Q and theoretically cooling water flow should be taken away0In the case of being stable casting operation, tire out in same time
Long-pending magnitude.In casting cycle, cooling controller recycles the flow of adjustment cooling-water duct to meet above-mentioned side in cycles
Casting roll intensity of cooling control method described in method.
Difference of the invention compared with existing is：
Chinese patent CN102149491A provides a kind of method for controlling cooling water inside casting roll, in this method, passes through inspection
Survey the Cast Strip thickness profile in roll gap downstream, the electric signal received by control system from sensor controls the rotation of casting roll fast
Degree, and change the water flow temperature recycled via water stream channel, come the roller hat of casting roll during controlling casting manipulations.With the present invention
It compares, which is supplied to the cooling water of casting roll to be passed in and out from casting roll side, by the way that two casting rolls is made to intake direction on the contrary, supporting
Disappear uneven due to being expanded caused by water temperature height in casting roll.
And the present invention has cooling water into and out of channel from casting roll both sides, and it is uneven to avoid every casting roll expansion.And this
Invention is not related to changing the scheme of inflow temperature.
Patent WO03055623A1 is provided a method, water is multiplied by by the casting roll water-in and water-out temperature difference measured
The heat (it thinks to be equal to the heat that cooling water is taken away) that molten steel solidification is discharged is obtained, and then is combined admittedly by computer system
Other Solidification Parameters having extrapolate the temperature of roll surface.Although this method also calculates cooling water using water temperature difference and water and takes away
Heat, but it has been used for counter pushing away roll surface temperature.
It is of the invention then calculate the heat that cooling water in the unit interval is taken away, and then adjust according to its difference the cooling of casting roll
Intensity improves casting roll cooling uniformity.
Advantages of the present invention：
1st, crystallization roll internal cooling channel of the present invention is uniformly reasonable, has good cooling effect.
2nd, the intensity of cooling of every casting roll can be directly controlled using this method, and can individually be adjusted each cold in casting roll
But the intensity of cooling of aquaporin, and then ensure the cooling uniformity of two casting rolls, adjusting method is rapid, means are reliable.
3rd, water system is simple and reliable, can be rapidly reached target flow.And pass through the flow for finely tuning each water outlet,
Can be that control system is rapidly reached stable state.
Description of the drawings
Fig. 1 is typical twin-roll thin strip continuous casting process schematic representation；
Fig. 2 is the sectional view of casting roll of the present invention；
Fig. 3 is the E-E sectional views (casting roll cooling water intake tunnel 1) of Fig. 2；
Fig. 4 is the F-F sectional views (casting roll cooling water intake tunnel 2) of Fig. 2；
Fig. 5 is casting roll cooling water system schematic of the present invention；
Fig. 6 is casting roll cooling water control schematic diagram of the present invention；
Fig. 7 is casting roll intensity of cooling control flow chart of the present invention.
Specific embodiment
Referring to Fig. 1 which shows twin-roll thin strip continuous casting technique, the molten steel in tundish 5 pass through the mouth of a river 6 and distributor
In the space surrounded on 7 roll surfaces of casting roll 1a, 1b for being connected with cooling water two inside by uniform cloth stream with ceramic wafer 2a, 2b
Molten bath is formed, with casting roll opposite direction rotating, molten steel is in casting roller surface solidification and and then the shape at two casting roll minimum clearances
Into thin Cast Strip 3.
As shown in Fig. 2~Fig. 6, a kind of double-roll thin-belt continuous casting roller of the invention, including roller core 18 and roller set 16, roller set is adopted
It is combined together with hot jacket connecting mode or mechanical attachment form with roller core, wherein, it is 55~100mm that roller, which covers 16 thickness, in roller
Several slot holes 11,12 parallel with casting roll axis are uniformly circumferentially opened up along casting roll positioned at the position of 10~55mm of roll surface in set 16,
And those slot holes are divided into upper and lower two layers of arrangement, long bore ends are blocked by plug, wherein, the upper strata slot hole 11 close to roll surface is cold
But aquaporin；
The long water hole 72 of one or more water flowings is axially opened up in 18 both ends end of roller core and radially opens up one or more
The entery and delivery port 15 connected with long water hole 72；It is there are one the outer wall of 18 both ends of roller core and roller 16 adapter sections of set is arranged symmetrically or more
The water-in and water-out catch basin 64,62 of a annular, a water inlet 15 of 18 one end of roller core is through long water hole 72 and connection branch 71
Water inlet catch basin 64 is connected, water inlet catch basin 64 is long by the connection roller set of long inclined hole 26 upper strata being evenly arranged in its upper rolls set
Hole 11, the other end that upper strata slot hole 11 is located in roller set 16 connect lower floor's slot hole 12 by short inclined hole 20, and lower floor's slot hole 12 passes through
The straight hole 29 being evenly arranged in roller set connects the water outlet catch basin 62 in roller core other end portion, and connects in roller core other end portion
Connection branch 69 and long water hole 67, pass through long water hole 67 connect 18 other end of roller core water outlet 14.
Casting roll of the present invention includes roller core 18 and roller set 16, is machined with hole on roller core and roller set, is passed in and out for cooling water,
So as to be formed in the interior thereof two individual cooling-water ducts.
Illustrate casting roll internal structure and its Inlet and outlet water control program by taking casting roll 1a as an example below.
In cooling-water duct 1, the cooling water intake 15 there are two symmetrical machinings on the circumference of OS side roller cores end, accordingly
Ground, there are two long water holes 72 for processing inside roller core.Cooling water enters from two water inlets 15 in roller simultaneously, by two long water
Hole 72 and its respectively two branches 71 enter in same water inlet catch basins 64, cooling water passes through upper long 26 quilt of inclined hole of roller set
It is equally distributed in several upper strata slot holes 11 that roll surface 30mm lower sections are arranged circumferentially along roll surface, and along casting roll
Roll surface is flowed axially through, into the short inclined hole 20 of the roller set other end, enters water outlet catch basin 62 by lower floor's slot hole 12 and straight hole 13
In, then, in catch basin 62, by 4 branches 69, cooling water is pooled to two long water hole 67, and then in the WS sides of casting roll
Roller core water outlet 14 discharge.Wherein, the end of upper strata slot hole 11, lower floor's slot hole 12 and short inclined hole is close using screw plug 17
Envelope.
Two water outlets 14 symmetrical machining on roller core 18, is connected by a drainpipe with pond, on this drainpipe
Pressure sensor 34 and temperature sensor 33 and flow control valve 52 are installed.
Equally, in cooling-water duct 2, there are two cooling water intakes for symmetrical machining on the circumference of WS side roller cores end
24, correspondingly, there are two long water holes 65 for processing inside roller core.In work, cooling water enters roller from two water inlets 24 simultaneously
It is interior, by two long water hole 65 and its respectively two branches 68 enter in same water inlet catch basins 61, cooling water passes through roller
It is long to be uniformly allocated to several upper stratas being arranged circumferentially below roll surface 30mm along roll surface for long inclined hole 19 on set
In hole 21, and roll surface is flowed axially through along casting roll, into the short inclined hole 27 of the roller set other end, by lower floor's slot hole 28 and straight hole
29 enter water outlet catch basin 63, and in catch basin 63, by 4 branches 70, cooling water is pooled to two long water hole 66, Jin Er
The roller core water outlet 25 of the OS sides of casting roll is discharged.Wherein, the end of upper strata slot hole 21, lower floor's slot hole 28 and short inclined hole 27 uses
Screw plug 17 seals.
Two water outlets 25 symmetrical machining on roller core 18, is connected by a drainpipe with pond, on this drainpipe
Pressure sensor 37 and temperature sensor 38 and flow control valve 51 are installed.
In addition, in Fig. 5,46,55 be water inlet；45th, 56 be water outlet；32nd, 35,39 be pressure sensor, 31,36,40
For temperature sensor.
Also, roller two ends of set are circumferentially with the annular protrusion for being sealed with side seal board, ledge width 10- along roll surface
20mm is highly 2-5mm.
As shown in figure 3, any two upper strata slot hole 11 and 21 is in the circumferentially-spaced distribution of casting roll, it is not connected and adjacent
Cooling water flow direction in upper strata slot hole 11 and 21 is opposite.
Referring to Fig. 5~Fig. 7, a kind of method of control double-roll thin-belt continuous casting roller intensity of cooling of the invention, one adjustable
The water pump 30 of amount of restriction provides cooling water to the water inlet of two casting rolls 1a, 1b simultaneously, and first, cooling controller 8 passes through water pump
Driving unit 9 controls water pump 30 to reach its goal pressure P, and (goal pressure comes from cold state experimental results, can make two casting rolls
Cooling water flow close to target flow fluctuation range).Meanwhile cooling controller 8 monitors the water outlet flow of each casting roll
Each cooling-water duct water flow value q that the feedback of regulating valve 51,52,53,54 is come1、q2Signal, inflow temperature t0, leaving water temperature
t1、t2Cooling-water duct in every casting roll is calculated to add up to take away heat Q in 1 minuten, its mean value is taken, i.e.,：
In next step, according to Q1、Q2WithBetween difference, cooling controller 8 sends out corresponding flow deviation signal delta K1、Δ
K2To flow control valve 51,52, the latter adjusts the water flow of corresponding cooling-water duct (there are thermal excursions).Cooling control
Device 8 constantly repeats above-mentioned control method according to feedback result, finally realizes in this root casting roll institute's band in each cooling-water duct
The heat walked is identical.I.e.：
Q1=Q2
In casting cycle, the target heat Q that the cooling water that lead to inside two casting rolls was taken away in one minute is that basis is poured
Casting process demand is pre-set, and is solidificated in cooling controller 8, what the cooling water led in this case, inside casting roll was taken away
Target heat Q is a fluctuation range, around should band according to the theoretically cooling water flow that casting process calculates
The heat Q walked0Fluctuation, i.e.,：
Q∈[Q0± Δ Q],
Further, if the heat that single casting roll cooling water is taken away does not reach target heat Q, cooling controller 8 sends out pressure
Power variable Δ P feed pumps driving unit 9 controls water pump 30 to change its output pressure P, and and then each cooling-water duct water of change
Flow value q1、q2, meanwhile, constantly according to each cooling-water duct water flow value q1、q2Signal, inflow temperature t0, leaving water temperature t1、
t2Etc. parameters calculate in every casting roll cooling-water duct and added up to take away the sum of heat ∑ Q in 1 minuten=Q1+Q2, with mesh
Mark heat Q compares.If there are deviations for the two, output pressure, this control method of such iterative cycles are changed again, until realizing
The heat that cooling water is taken away in single casting roll is identical with desired value, i.e.,：
Q=Q1+Q2
The above method can make cooling uniformity inside every casting roll, individually control each cooling water of each casting roll
Intensity of cooling in channel is consistent.
Wherein, the heat that two casting rolls are taken away by cooling water within the unit interval can be identical or differ.
Claims (12)
1. a kind of double-roll thin-belt continuous casting roller, including roller core and roller set, roller set is using hot jacket connecting mode or mechanical attachment form
It is combined together with roller core；It is characterized in that：
Roller set thickness be 55~100mm, roller set on, apart from the position of 10~55mm of roll surface along casting roll circumferentially uniformly open up it is several
The slot hole parallel with casting roll axis, and, those slot holes are divided into upper and lower two layers of arrangement, and long bore ends are blocked by plug, wherein, it leans on
The upper strata slot hole of nearly roll surface is cooling-water duct；
The long water hole of one or more water flowings is axially opened up in the end of roller core both ends and radially opens up one or more and long water hole
The entery and delivery port of connection；
The outer wall of roller core both ends and roller set adapter section be arranged symmetrically there are one or multiple annulars water-in and water-out catch basin, roller core one
One water inlet at end passes through through long water hole and connection branch connection water inlet catch basin, water inlet catch basin in its upper rolls set
The long inclined hole connection roller set upper strata slot hole being evenly arranged, the other end that upper strata slot hole is located in roller set connect lower floor by short inclined hole
Slot hole, lower floor's slot hole by roller cover in the straight hole that is evenly arranged connect the water outlet catch basin in roller core other end portion, and connect roller
Connection branch and long water hole in core other end portion connect the water outlet of the roller core other end by long water hole.
2. double-roll thin-belt continuous casting roller as described in claim 1, which is characterized in that the water outlet of each cooling-water duct of casting roll
Mouthful be fitted with the flow for the cooling water that flow control valve can be adjusted individually in casting roll cooling-water duct, and can detect with it is defeated
Water flow qnSignal, while detection temperature t is also installednWith hydraulic pressure pnElectrical signal detection device and corresponding signal input,
Output device.
3. double-roll thin-belt continuous casting roller as described in claim 1, which is characterized in that any one cooling water inside casting roll leads to
Road all includes there are one water inlet and a water outlet, wherein, the inlet and outlet of same cooling-water duct inside casting roll
Can be respectively arranged can also be arranged in the same end of casting roll in the both ends of casting roll.
4. double-roll thin-belt continuous casting roller as described in claim 1, which is characterized in that any two cooling in same casting roll
Slot hole corresponding to aquaporin is in the circumferentially-spaced distribution of casting roll, and cooling water flow direction in adjacent slot hole is on the contrary, simultaneously mutual not phase
It is logical.
5. double-roll thin-belt continuous casting roller as described in claim 1, which is characterized in that the roller covers two ends along roll surface circumferential direction
Equipped with the annular protrusion for being sealed with side seal board, ledge width 10-20mm is highly 2-5mm.
6. a kind of method for controlling double-roll thin-belt continuous casting roller intensity of cooling, every casting roll have one or more water inlets and with
Corresponding one or more water outlets and several slot holes for being arranged circumferentially below roll surface along roller outer circle,
One or more individual cooling-water ducts are correspondingly formed inside every casting roll；Pacify in the water outlet of each cooling-water duct
The flow of the cooling water in casting roll cooling-water duct can be individually adjusted equipped with flow control valve；It is adjustable using one or more
The water pump of flow provides cooling water by same pipeline to two casting rolls, meanwhile, cooling controller monitors each cooling-water duct
Inflow temperature t0, water flow qn, leaving water temperature tn, discharge pressure pn, and thus calculate each cooling water in every casting roll
The heat Q that cooling water is taken away within the unit interval in channeln, pass through the water of the corresponding cooling-water duct of flow-rate adjustment valve regulation
Flow realizes that the heat that the cooling water in every casting roll in each cooling-water duct is taken away within the unit interval is identical；So
After will be according to total amount of heat ∑ QnThe desired value Q of heat is taken away within the unit interval with cooling water in single casting roll cooling-water duct
Deviation, adjust the water flow q of cooling-water ductn, finally realize what the cooling water in every casting roll was taken away within the unit interval
Heat is identical with target calorie value.
7. the method for control double-roll thin-belt continuous casting roller intensity of cooling as claimed in claim 6, it is characterized in that, casting cycle
In, the target heat Q that the cooling water that leads to inside two casting rolls is taken away within the unit interval is a fluctuation range, around
The heat Q that the theoretically casting roll cooling water calculated according to casting process should be taken away0Fluctuation, i.e.,：
Q∈[Q0±ΔQ]
Wherein：Δ Q is allowed deviation, and 2~3%.
8. as claimed in claim 6 control double-roll thin-belt continuous casting roller intensity of cooling method, it is characterized in that, casting roll it is each
The water outlet of cooling-water duct is fitted with the stream for the cooling water that flow control valve can be adjusted individually in casting roll cooling-water duct
Amount, and can detect and export water flow qnSignal, while detection leaving water temperature t is also installednWith discharge pressure pnTelecommunications
Number detection device and the input of corresponding signal, output device.
9. the method for control double-roll thin-belt continuous casting roller intensity of cooling as claimed in claim 6, it is characterized in that, using adjustable
The water pump of flow provides cooling water to two casting rolls simultaneously, and first, cooling controller control water pump reaches its goal pressure P, together
When, cooling controller monitors the inflow temperature t of each cooling-water duct in every casting roll0, water flow qn, leaving water temperature tn, water outlet
Pressure pn, calculate the cooling water in each cooling-water duct and heat Q taken away within the unit intervaln, pass through flow control valve tune
The water flow of corresponding cooling-water duct is saved, realizes the cooling water in single casting roll in each cooling-water duct in the unit interval
Interior taken away heat is identical, i.e.,：
Q1=Q2=Q3=... .=Qn, wherein, n=1,2,3......
10. the method for control double-roll thin-belt continuous casting roller intensity of cooling as claimed in claim 6, it is characterized in that, if single casting
The total amount of heat ∑ Q that roller cooling water is taken away within the unit intervalnThere is gap with target heat Q, then, cooling controller will be by small size
Change the output pressure P of water pump, change water supply flow, so that the cooling water flow q of each cooling-water ductnVariation, finally
So that the total amount of heat that cooling water is taken away in single casting roll reaches target heat Q, i.e.,：
Q=∑s Qn, wherein, n=1,2,3.......
11. the method for control double-roll thin-belt continuous casting roller intensity of cooling as claimed in claim 6, it is characterized in that, two casting rolls
The heat taken away within the unit interval by cooling water can be identical or differ.
12. the method for control double-roll thin-belt continuous casting roller intensity of cooling as claimed in claim 6, it is characterized in that, it is each to cool down
Cooling water takes away heat Q in aquaporinn, target heat Q and theoretically cool down that the cooling water that leads to inside casting roll is taken away
The heat Q that water flow should be taken away0It is the magnitude accumulated in same time in the case of stable casting operation.
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| CN201510641053.6A CN105149534B (en) | 2015-09-30 | 2015-09-30 | A kind of method and device for controlling double-roll thin-belt continuous casting roller intensity of cooling |
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| CN201510641053.6A CN105149534B (en) | 2015-09-30 | 2015-09-30 | A kind of method and device for controlling double-roll thin-belt continuous casting roller intensity of cooling |
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| CN2621857Y (en) * | 2003-05-29 | 2004-06-30 | 上海宝钢集团公司 | Water cooling crystallizing roller for double-roll thin strip continuous casting |
| CN201855926U (en) * | 2010-06-30 | 2011-06-08 | 宝山钢铁股份有限公司 | Driven roller of continuous casting machine with straight grooves as cooling grooves |
| WO2012051646A1 (en) * | 2010-10-18 | 2012-04-26 | Bluescope Steel Limited | Twin roll continuous caster |
| EP2527061A1 (en) * | 2011-05-27 | 2012-11-28 | Siemens VAI Metals Technologies GmbH | Method for cooling a metallic strand and switching valve for intermittent opening and closing of a volume flow of a coolant medium |
| CN104607606B (en) * | 2015-01-26 | 2016-01-20 | 张家港市广川电子有限公司 | A kind of continuous casting and extrusion shaped device |
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