CN101890486A - Multiple cooling methods integrated cooling system in strip casting process - Google Patents

Multiple cooling methods integrated cooling system in strip casting process Download PDF

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Publication number
CN101890486A
CN101890486A CN 201010233459 CN201010233459A CN101890486A CN 101890486 A CN101890486 A CN 101890486A CN 201010233459 CN201010233459 CN 201010233459 CN 201010233459 A CN201010233459 A CN 201010233459A CN 101890486 A CN101890486 A CN 101890486A
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water
cooling
inlet pipe
water inlet
casting
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CN 201010233459
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CN101890486B (en
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刘振宇
李成刚
曹光明
刘海涛
王国栋
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Northeastern University China
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Northeastern University China
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Abstract

The invention provides a multiple cooling methods integrated cooling system in the strip casting process, belonging to the technical field of metallurgy. The system comprises air mist cooling devices, water spray cooling devices, water mist spray guns, a water collection tank, a roller table, a beam, a chassis and a casting rolling mill rack, wherein each air mist cooling device comprises first air inlet pipes, first water inlet pipes, air mist nozzles, an air flow regulating valve, a first water flow regulating valve and an air mist cooling spray gun installing support; each water mist spray gun comprises nozzles, a second water inlet pipe and a second water flow regulating valve; and each water spray cooling device comprises a case, a third water inlet pipe, shunt pipes, a deflector, water nozzles and third water flow regulating valves. The system comprises the following advantages: multiple cooling methods such as air spraying, mist spraying, water spraying and the like are integrated on the cooling system and large-scale cooling rate is realized by selecting the types and flow of cooling media and the opening quantity of different nozzles according to the requirement of online different cooling processes for casting and rolling the strips made of different materials to obtain the required structures.

Description

The cooling system that the multiple type of cooling of a kind of strip casting process is integrated
Technical field:
The invention belongs to metallurgical technology field, the integrated cooling system of the multiple type of cooling of particularly a kind of strip casting process.
Background technology:
At present, thin strap continuous casting be a kind of with the roll that rotates as crystallizer, directly produce the new technology of 1-5mm strip with liquid molten steel, the strip of continuous casting is in a kind of state that has just solidified when going out the crystallization roller, temperature is very high, the deformation effect when adding casting, thereby crystallization more very easily takes place strip destroys initial columanar structure, therefore, should improve the cooldown rate of thin strap continuous casting outlet, suppress the generation of crystallization again.Grain growth speed is exceedingly fast under the long-time condition of high temperature of thin strap continuous casting in addition, be easy to organize crystal grain excessive, and hot rolling, the cold rolling reduction to it is little subsequently, can't carry out grain refinement, and end properties is reduced.Some steel grade need obtain the strip of special texture; requirement in solidifying cooling procedure promptly before normalizing is handled some solute element be solid-solubilized in the matrix as far as possible; if the cast-rolling thin strip cooling velocity is slow; need the solute element of solid solution to separate out; technical process will increase the solid solution treatment process of high temperature long-time heating; make technology become complicated, cost increases.The cooling system that thin strap continuous casting is adopted is simple water tank cooling now, and cooling effect is poor, and cooling effectiveness is low, can not reach the cooling requirement.
Summary of the invention:
Deficiency at the prior art existence, the invention provides the integrated cooling system of the multiple type of cooling of a kind of strip casting process, by setting up the accelerate cooling system of strip, the different types of cooling of adjusting cooling system satisfy the requirement of strip different cooling rate, to reach the purpose of the cooling velocity that improves casting and rolling machine outlet strip.
Technical solution of the present invention is achieved in that this system includes aerosol cooling device, equipment water jetting cooler, water fog spraying gun, header tank, transmission roller channel, crossbeam and base;
The aerosol cooling device includes first air inlet pipe, first water inlet pipe, aerial fog nozzle, gas flow regulating valve, first Water flow adjusting valve and mounting bracket;
Water fog spraying gun comprises nozzle, second water inlet pipe and second Water flow adjusting valve;
Equipment water jetting cooler includes housing, the 3rd water inlet pipe, isocon, deflector, (operating) water nozzle and the 3rd Water flow adjusting valve;
The connection of these each parts of system is: this system includes aerosol cooling device, equipment water jetting cooler, water fog spraying gun, header tank, roller-way, crossbeam and base;
The connection of these each parts of system is: the casting and rolling machine exit position has been horizontally disposed with roller-way, roller-way both sides is up and down evenly installed at least two group equipment water jetting coolers and one group of water fog spraying gun, wherein at least one group of equipment water jetting cooler and at least one water fog spraying gun are installed on the crossbeam that is positioned at the roller-way top, at least one group of equipment water jetting cooler and at least one water fog spraying gun are installed on the base of roller-way below, along cast-rolling thin strip direction of transfer bilateral symmetry distribution at least two group aerosol cooling devices about strip, header tank is installed in the below of the equipment water jetting cooler and the water fog spraying gun of roller-way downside near the casting and rolling machine exit position in casting roller below.
The syndeton of each parts of aerosol cooling device is: first water inlet pipe is arranged on the first air inlet pipe skin, first air inlet pipe is arranged on the internal layer of first water inlet pipe, first air inlet pipe is connected with first water inlet pipe is coaxial, aerial fog nozzle is installed on first water inlet pipe, aerial fog nozzle is interior outer double-layer structure, the aerial fog nozzle internal layer is provided with breather pipe, skin is provided with water service pipe, wherein the breather pipe of aerial fog nozzle internal layer communicates with first air inlet pipe, the outer field water service pipe of aerial fog nozzle communicates with first water inlet pipe, gas flow regulating valve is installed in an end of first air inlet pipe, first Water flow adjusting valve is installed in an end of first water inlet pipe, at the outer mounting bracket of installing of first water inlet pipe, the aerosol cooling device is fixed on the mounting bracket, mounting bracket is connected on the casting and rolling machine frame, by mounting bracket aerosol cooling device 1 is installed on the casting and rolling machine frame.
The connection of each parts of water fog spraying gun is: nozzle is installed on second water inlet pipe, is connected with second water inlet pipe, and an end of second water inlet pipe is installed second Water flow adjusting valve.
The connection of each parts of equipment water jetting cooler is: housing is the rectangular structure of hollow, the 3rd water inlet pipe is arranged on enclosure interior, isocon is installed in the 3rd water inlet pipe skin, be connected with the 3rd water inlet pipe is coaxial, isocon is provided with tap hole, and deflector is installed in the top of isocon, pod apertures distributes on deflector, the upper surface distribution screwed hole of housing, (operating) water nozzle is installed on the screwed hole, and the 3rd Water flow adjusting valve is installed in the 3rd water inlet pipe one end.
Described crossbeam is provided with rotating shaft near an end of water fog spraying gun.
Operation principle of the present invention: the present invention is the cooling system of cast-rolling thin strip, the strip that casting goes out through the casting roller is in transmission course, descend the two sides to adopt aerosol cooling, water smoke cooling and three kinds of different types of cooling of water spray cooling that strip is quickened cooling thereon, the thickness of the strip that goes out according to casting, the strip temperature that goes out the casting roller, temperature, the strip speed of service that requires to be cooled to are selected different cooling paths.The angle of the unlatching group number of each type of cooling, valve opening amount size (expulsion pressure), nozzle when all producing according to casting different actual requirements select.
The course of work of the present invention: the condition of high temperature strip that casting just goes out is transferred to the aerosol cooling device with certain speed and adopts gas or aerosol two media that strip is purged cooling.Jet and implementation method atomize is: when first Water flow adjusting valve is closed fully, when gas flow regulating valve is opened, have only refrigerating gas to enter aerial fog nozzle by first air inlet pipe, from the ejection of aerial fog nozzle mouth, form jet state; When first Water flow adjusting valve and gas flow regulating valve are all opened, cooling water and refrigerating gas enter first water inlet pipe and first air inlet pipe respectively, the gases at high pressure of cooling water in the aerial fog nozzle water service pipe and breather pipe ejection mix, mix ejection from the outlet of aerosol cooling device, become spray discharge pattern, strip is carried out first order cooling.Strip after the cooling of aerosol cooling device carries out second level cooling through the water smoke that water fog spraying gun produces to strip, the cooled strip of water smoke is sent to equipment water jetting cooler, to the strip cooling of spraying water, the cooling water flow of its each equipment water jetting cooler is controlled by the 3rd Water flow adjusting valve, cooling water sprays from each (operating) water nozzle more uniformly by the shunting action of the pod apertures of tap hole on the 3rd water inlet pipe, the isocon and deflector.
Advantage of the present invention: on a cooling system, be integrated with the multiple types of cooling such as jet, aerosol, spraying, water spray, according to the online different process for cooling needs of the strip of casting unlike material, the unlatching quantity of kind, flow and different spray nozzles by selecting cooling medium, realize that large-scale cooldown rate regulates, with the tissue that obtains requiring obtaining.
Description of drawings:
Fig. 1 is an overall structure schematic diagram of the present invention;
Fig. 2 is an aerosol cooling device structural representation of the present invention;
Fig. 3 is a water fog spraying gun structural representation of the present invention;
Fig. 4 (a) is an equipment water jetting cooler structural front view of the present invention;
Fig. 4 (b) is an equipment water jetting cooler structure left view of the present invention;
Fig. 4 (c) is an equipment water jetting cooler structure vertical view of the present invention;
A casting roller among the figure, the b cast-rolling thin strip, 1 aerosol cooling device, 2 water fog spraying guns, 3 crossbeams, 4 equipment water jetting coolers, 5 roller-ways, 6 header tanks, 7 rotating shafts, 8 bases, 9 first water inlet pipes, 10 first air inlet pipe, 11 aerial fog nozzles, 12 gas flow regulating valves, 13 first Water flow adjusting valves, 14 mounting brackets, 15 nozzles, 16 second water inlet pipes, 17 second Water flow adjusting valves, 18 the 3rd water inlet pipes, 19 isocons, 20 deflectors, 21 (operating) water nozzles, 22 housings, 23 screwed holes, 24 the 3rd Water flow adjusting valves.
The specific embodiment:
The integrated cooling system of the multiple type of cooling of a kind of strip casting process of the present invention is illustrated with accompanying drawing in conjunction with the embodiments.
This system includes aerosol cooling device 1, equipment water jetting cooler 4, water fog spraying gun 2, header tank 6, roller-way 5, crossbeam 3 and base 8 as shown in Figure 1;
Aerosol cooling device 1 includes first water inlet pipe 9, first air inlet pipe 10, aerial fog nozzle 11, gas flow regulating valve 12, first Water flow adjusting valve 13 and mounting bracket 14 as shown in Figure 2;
Water fog spraying gun 2 comprises nozzle 15, second water inlet pipe 16 and second Water flow adjusting valve 17 as shown in Figure 3;
Equipment water jetting cooler 4 includes housing 22, the 3rd water inlet pipe 18, isocon 19, deflector 20, (operating) water nozzle 21 and the 3rd Water flow adjusting valve 24 shown in Fig. 4 (a), Fig. 4 (b) and Fig. 4 (c).
The position of this system's each several part is: the casting and rolling machine exit position has been horizontally disposed with roller-way 5, roller-way is evenly installed at least two group equipment water jetting coolers 4 and one group of water fog spraying gun 2 in both sides about in the of 5, wherein at least one group of equipment water jetting cooler 4 and at least one water fog spraying gun 2 are installed on the crossbeam 3 that is positioned at roller-way 5 tops, at least one group of equipment water jetting cooler 4 and at least one water fog spraying gun 2 are installed on the base 8 of roller-way 5 belows, along cast-rolling thin strip direction of transfer bilateral symmetry distribution at least two group aerosol cooling devices 1 about strip, header tank 6 is installed in the below of the equipment water jetting cooler 4 and the water fog spraying gun 2 of roller-way 5 downsides near the casting and rolling machine exit position in casting roller below.
The connection of aerosol cooling device 1 each parts is: first water inlet pipe 9 is arranged on first air inlet pipe, 10 skins, first air inlet pipe 10 is arranged on the internal layer of first water inlet pipe 9, first air inlet pipe 10 and 9 coaxial connections of first water inlet pipe, aerial fog nozzle 11 is installed on first water inlet pipe 9, aerial fog nozzle 11 is interior outer double-layer structure, aerial fog nozzle 11 internal layers are provided with breather pipe, skin is provided with water service pipe, wherein the breather pipe of aerial fog nozzle 11 internal layers communicates with first air inlet pipe 10, aerial fog nozzle 11 outer field water service pipes communicate with first water inlet pipe 9, gas flow regulating valve 12 is installed in an end of first air inlet pipe 10, first Water flow adjusting valve 13 is installed in an end of first water inlet pipe 10, at first water inlet pipe, the 10 outer mounting brackets 14 of installing, the aerosol cooling device is fixed on the mounting bracket 14, mounting bracket 14 is connected on the casting and rolling machine frame, by mounting bracket 14 aerosol cooling device 1 is installed on the casting and rolling machine frame.
The connection of water fog spraying gun 2 each parts is: nozzle 15 is installed on second water inlet pipe 16, is connected with second water inlet pipe 16, and an end of second water inlet pipe 16 is installed second Water flow adjusting valve 17;
The connection of equipment water jetting cooler 4 each parts is: housing 22 is the rectangular structure of hollow, the 3rd water inlet pipe 18 is arranged on housing 22 inside, isocon 19 is installed in the 3rd water inlet pipe 18 skins, with 18 coaxial connections of the 3rd water inlet pipe, isocon 19 is provided with some tap holes, deflector 20 is installed in the top of isocon 19, some pod apertures distribute on deflector 20, the upper surface of housing 22 some screwed holes 23 that distribute, (operating) water nozzle 21 is installed on the screwed hole 23, and the 3rd Water flow adjusting valve 24 is installed in water inlet pipe one end.
Described crossbeam 3 is provided with rotating shaft 7 near an end of water fog spraying gun 2
Operation principle of the present invention: the present invention is the cooling system of cast-rolling thin strip.The strip that casting goes out through the casting roller is in transmission course, descend the two sides to adopt aerosol cooling device 1,4 three kinds of different cooling devices of water fog spraying gun 2 and equipment water jetting cooler that strip is quickened cooling thereon, the thickness of the strip that goes out according to casting, the strip temperature that goes out the casting roller, temperature, the strip speed of service that requires to be cooled to are selected different cooling paths.The angle of the unlatching group array number of each type of cooling, valve opening amount size (expulsion pressure), nozzle 15 when all producing according to casting different actual requirements select.
The course of work of the present invention: the condition of high temperature strip that casting just goes out is transferred to aerosol cooling device 1 with certain speed and adopts gas and aerosol two media that strip is purged cooling.Jet and implementation method atomize is: when first Water flow adjusting valve 13 is closed fully, when gas flow regulating valve 12 is opened, have only refrigerating gas to enter aerial fog nozzle 11 by first air inlet pipe 10, from 11 mouthfuls of ejections of aerial fog nozzle, form jet state; Cooling water and refrigerating gas enter first water inlet pipe 9 and first air inlet pipe 10 respectively when first Water flow adjusting valve 13 and gas flow regulating valve 12 are all opened, the gases at high pressure of cooling water in aerial fog nozzle 11 water service pipes and breather pipe ejection mix, mix ejection from 1 outlet of aerosol cooling device, become spray discharge pattern, strip is carried out first order cooling, strip after 1 cooling of aerosol cooling device carries out second level cooling through the water smoke that water fog spraying gun 2 produces to strip, cooled strip is sent to equipment water jetting cooler 4 carries out third level cooling.The cooling water flow of its each equipment water jetting cooler 4 is by 24 controls of the 3rd Water flow adjusting valve, and cooling water sprays from each (operating) water nozzle 21 more uniformly by the shunting action of the pod apertures of tap hole on the 3rd water inlet pipe 18, the isocon 19 and deflector 20.

Claims (5)

1. integrated cooling system of the multiple type of cooling of strip casting process, it is characterized in that: this system includes aerosol cooling device, equipment water jetting cooler, water fog spraying gun, header tank, roller-way, crossbeam and base;
The connection of these each parts of system is: the casting and rolling machine exit position has been horizontally disposed with roller-way, roller-way both sides is up and down evenly installed at least two group equipment water jetting coolers and one group of water fog spraying gun, wherein at least one group of equipment water jetting cooler and at least one water fog spraying gun are installed on the crossbeam that is positioned at the roller-way top, at least one group of equipment water jetting cooler and at least one water fog spraying gun are installed on the base of roller-way below, along cast-rolling thin strip direction of transfer bilateral symmetry distribution at least two group aerosol cooling devices about strip, header tank is installed in the below of the equipment water jetting cooler and the water fog spraying gun of roller-way downside near the casting and rolling machine exit position in casting roller below.
2. by the integrated cooling system of the multiple type of cooling of the described strip casting process of claim 1, it is characterized in that: described aerosol cooling device includes first air inlet pipe, first water inlet pipe, aerial fog nozzle, gas flow regulating valve, first Water flow adjusting valve and mounting bracket;
The syndeton of each parts of aerosol cooling device is: first water inlet pipe is arranged on the first air inlet pipe skin, first air inlet pipe is arranged on the internal layer of first water inlet pipe, first air inlet pipe is connected with first water inlet pipe is coaxial, aerial fog nozzle is installed on first water inlet pipe, aerial fog nozzle is interior outer double-layer structure, the aerial fog nozzle internal layer is provided with breather pipe, skin is provided with water service pipe, wherein the breather pipe of aerial fog nozzle internal layer communicates with first air inlet pipe, the outer field water service pipe of aerial fog nozzle communicates with first water inlet pipe, gas flow regulating valve is installed in an end of first air inlet pipe, first Water flow adjusting valve is installed in an end of first water inlet pipe, at the outer mounting bracket of installing of first water inlet pipe, mounting bracket is connected on the casting and rolling machine frame.
3. by the integrated cooling system of the multiple type of cooling of the described strip casting process of claim 1, it is characterized in that: described water fog spraying gun comprises at least two nozzles, second water inlet pipe and second Water flow adjusting valve;
The connection of each parts of water fog spraying gun is: nozzle is installed on second water inlet pipe, is connected with second water inlet pipe, and an end of second water inlet pipe is installed second Water flow adjusting valve.
4. by the integrated cooling system of the multiple type of cooling of the described strip casting process of claim 1, it is characterized in that: described equipment water jetting cooler includes housing, the 3rd water inlet pipe, isocon, deflector, (operating) water nozzle and the 3rd Water flow adjusting valve;
The connection of each parts of equipment water jetting cooler is: housing is the rectangular structure of hollow, the 3rd water inlet pipe is arranged on enclosure interior, isocon is installed in the 3rd water inlet pipe skin, be connected with the 3rd water inlet pipe is coaxial, isocon is provided with tap hole, and deflector is installed in the top of isocon, pod apertures distributes on deflector, the upper surface distribution screwed hole of housing, (operating) water nozzle is installed on the screwed hole, and the 3rd Water flow adjusting valve is installed in the 3rd water inlet pipe one end.
5. by the integrated cooling system of the multiple type of cooling of the described strip casting process of claim 1, it is characterized in that: described crossbeam is provided with rotating shaft near an end of water fog spraying gun.
CN2010102334598A 2010-07-22 2010-07-22 Multiple cooling methods integrated cooling system in strip casting process Active CN101890486B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104884189A (en) * 2012-12-21 2015-09-02 株式会社Posco Hybrid cooling nozzle apparatus, and method for controlling cooling nozzle of continuous casting equipment using same
CN105397045A (en) * 2015-12-21 2016-03-16 东北大学 Casting rolling device and method for aluminum alloy plate blank
CN110087802A (en) * 2016-12-26 2019-08-02 宝山钢铁股份有限公司 A kind of thin strip continuous casting strip steel cooling body and its cooling means
CN110605371A (en) * 2019-10-22 2019-12-24 北京科技大学 Device and method for controlling negative segregation defect of solute under continuous casting magnetic stirring
CN111992686A (en) * 2020-09-03 2020-11-27 福建三钢闽光股份有限公司 Aerial fog full-water combined cooling high-carbon steel continuous casting production method
CN112355259A (en) * 2020-11-09 2021-02-12 中铝材料应用研究院有限公司 Preparation device and preparation method for liquid continuous solidification forming of aluminum alloy sheet

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CN101722287A (en) * 2008-11-03 2010-06-09 攀钢集团研究院有限公司 Method for cooling continuous casting blanks and method for producing continuous casting billets comprising same

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Publication number Priority date Publication date Assignee Title
JPS57187150A (en) * 1981-05-12 1982-11-17 Nippon Steel Corp Secondary cooling installation for continuous casting
JP2598298B2 (en) * 1988-04-22 1997-04-09 新日本製鐵株式会社 Secondary cooling method in continuous casting
CN2442772Y (en) * 1998-03-17 2001-08-15 冶金工业部武汉钢铁设计研究院 Quickly changeable strong-weak cooler for continuous casting machine
JP2010069496A (en) * 2008-09-17 2010-04-02 Kobe Steel Ltd Secondary cooling apparatus and method in continuous casting
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104884189A (en) * 2012-12-21 2015-09-02 株式会社Posco Hybrid cooling nozzle apparatus, and method for controlling cooling nozzle of continuous casting equipment using same
CN105397045A (en) * 2015-12-21 2016-03-16 东北大学 Casting rolling device and method for aluminum alloy plate blank
CN105397045B (en) * 2015-12-21 2017-11-10 东北大学 The casting and rolling device and casting-rolling method of a kind of aluminum alloy slab
CN110087802A (en) * 2016-12-26 2019-08-02 宝山钢铁股份有限公司 A kind of thin strip continuous casting strip steel cooling body and its cooling means
CN110605371A (en) * 2019-10-22 2019-12-24 北京科技大学 Device and method for controlling negative segregation defect of solute under continuous casting magnetic stirring
CN111992686A (en) * 2020-09-03 2020-11-27 福建三钢闽光股份有限公司 Aerial fog full-water combined cooling high-carbon steel continuous casting production method
CN112355259A (en) * 2020-11-09 2021-02-12 中铝材料应用研究院有限公司 Preparation device and preparation method for liquid continuous solidification forming of aluminum alloy sheet

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Application publication date: 20101124

Assignee: Hebei dedicated Steel Co., Ltd.

Assignor: Northeastern University

Contract record no.: 2016210000030

Denomination of invention: Multiple cooling methods integrated cooling system in strip casting process

Granted publication date: 20120718

License type: Exclusive License

Record date: 20160923