CN109093084A - A kind of production method of continuous-casting sheet billet - Google Patents

A kind of production method of continuous-casting sheet billet Download PDF

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CN109093084A
CN109093084A CN201811146706.3A CN201811146706A CN109093084A CN 109093084 A CN109093084 A CN 109093084A CN 201811146706 A CN201811146706 A CN 201811146706A CN 109093084 A CN109093084 A CN 109093084A
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slab
casting
section
secondary cooling
crystallizer
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CN109093084B (en
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袁国
韩斌
张元祥
李振垒
曾建立
宋祖兴
康健
贾志鑫
王国栋
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Northeastern University China
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Northeastern University China
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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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • 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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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
    • B22D11/1226—Accessories for subsequent treating or working cast stock in situ for straightening strands
    • 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
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

本发明的一种连铸薄板坯的生产方法，属于薄板坯连铸技术领域，包括步骤如下：铸坯采用平行板结晶器浇铸成形、进入二冷段后经加长型垂直辊列段，带液芯铸坯受内外弧双侧长区间压下，大幅减薄铸坯厚度，再经大弧形半径弯曲矫直，在多组驱动辊同步驱动下，以拉坯速度4～6m/min生产出厚度为80～120mm的薄板坯。该薄板坯的连铸生产方法，克服了现有薄板坯连铸工艺复杂、结晶器容量小，摩擦阻力大和浸入式水口寿命短等问题，实现了薄板坯的高拉速连铸。A production method for continuous casting thin slabs of the present invention belongs to the technical field of thin slab continuous casting, and comprises the following steps: the casting slab is casted and formed by a parallel plate crystallizer; The core casting slab is pressed by the long intervals on both sides of the inner and outer arcs, which greatly reduces the thickness of the casting slab, and then bends and straightens it with a large arc radius. Under the synchronous drive of multiple sets of driving rollers, it is produced at a casting speed of 4-6m/min. Thin slabs with a thickness of 80-120 mm. The thin slab continuous casting production method overcomes the existing problems of complex thin slab continuous casting process, small crystallizer capacity, large friction resistance and short service life of submerged nozzles, etc., and realizes high-speed continuous casting of thin slabs.

Description

A kind of production method of continuous-casting sheet billet
Technical field:
The invention belongs to Sheet-bar Continuous Casting Technique fields, and in particular to a kind of production method of continuous-casting sheet billet.
Background technique:
Continuous casting and rolling technique of sheet bar is organically to be combined together traditional conticaster, heating furnace and Hot Rolling Mill, It is a kind of close-coupled Steel Production Flow Chart new technology, compared with traditional handicraft, continuous casting and rolling technique of sheet bar short, work with process Sequence is compact, equipment is simple, small investment, low energy consumption, environmental pollution is small, productivity is high and the advantages such as at low cost.
The first in the world thin slab continuous casting and rolling producing line uses the CSP technology of the western mark of Germany, in Niu Ke company of the U.S. It builds up and goes into operation.Its sheet billet is cast by vertical with bending type continuous casting machine, and casting machine is by funnel-type crystallizer, vertical secondary cooling zone, bending Formed with straightening section and horizontal segment, be detailed in Fig. 1, thickness of strand 50mm, due to its thickness compared to traditional slab (200~ 250mm) closer to final finished thickness, referred to as sheet billet.
One of sheet billet representative art: the CSP technology of the western mark of Germany, casting machine are constituted as shown in Figure 1, i.e. curved using standing The mode of formula continuous casting produces sheet billet, and molten steel pours into the funnel-type crystallizer of 50~90mm of exit thickness, forms the casting with wick-containing Base, in plumbness throwing, but using full water cooling, slab does not solidify before all in vertical state secondary cooling section, vertical section Long 9~11m, after slab all solidification, into curved strong section, metallurgical length≤11m, casting machine 3.0~3.5m of radius, slab is through curved Bent 90 ° are in a horizontal state, with the slab of 50~90mm of speed output thickness of 4~6m/min of pulling rate.This kind of sheet billet producer Formula, slab are completed to solidify in vertical section, and two cold full water coolings but, make easily to float with field trash, and casting blank solidification is more uniform, segregation Light advantage.
Two: Arvedi company's ESP technology of sheet billet representative art, Arvedi company of Italy ESP producing line in 2009 It goes into operation, which realizes the production of thickness 90~110mm slab by the way of ultrahigh speed continuous casting, since its pulling rate is fast, leads to Steel amount is big, so that continuous casting and hot rolling integral requirement is met, the endless rolling realized.
The technology produces sheet billet using straight circular-arc type continuous casting machine, and casting machine is constituted as shown in Fig. 2, molten steel pours into exit thickness 90 The funnel-type crystallizer of~110mm forms the slab with wick-containing, after throwing goes out crystallizer, that is, enters bending section, vertical section is only grown 1.5m~2m, slab bending straightening under band wick-containing state, casting machine radius 5m, secondary cooling zone slab is cooling using aerosol, and metallurgy is long 20m is spent, slab is gradually aligned in horizontal secondary cooling zone out, with speed output thickness 90~110mm slab of 4~6m/min of pulling rate.
Sheet billet advantage is produced using which are as follows: (1) slab is bent camber, casting machine height in the state of band wick-containing It is greatly reduced；(2) deformation temperature of casting blank bending and aligning is higher, and slab cracking frequency is low.
Existing sheet billet production technology, in order to reach relatively thin slab thickness, using relatively thin crystallizer, thin thickness Crystallizer in order to accommodate submersed nozzle, be designed as infundibulate in the middle part of crystallizer, to meet the placement of submersed nozzle, As shown in Fig. 3 (a) and Fig. 3 (b), in order to adapt to the crystallizer of thin thickness, submersed nozzle is also configured as flat, the thickness of resistance to material It is relatively thin.
Existing sheet blank continuous casting there are the problem of:
1, CSP vertical bending type continuous casting problem: (1) slab is aligned after solidifying completely, and temperature is low, and required straightening force is big, is easily occurred Crack defect；(2) casting machine height is higher, and usually in 10m or more, factory investment is high, inconvenient.
2, the straight arc continuous casting problem of ESP: (1) after slab goes out crystallizer, immediately entering bending section, after high pulling rate bleed-out, thing Therefore damage range is big, maintenance difficulty is high, heavy workload；(2) casting machine height reduces, but horizontal section length is significantly increased, entire to produce Line length increases, and capital expenditure increases, and the exploitativeness by producing line length limitation is poor.
3, funnel-type crystallizer problem: (1) frictional resistance of slab pull-out crystallizer process, green shell and crystallizer wall is big, Slab crackle and crystallizer is easily caused to wear；(2) mould wall thickness is thin, and capacity is small, under conditions of high flow capacity, steel in crystallizer Water level fluctuation is big, is unfavorable for controlling；
4, submersed nozzle problem: submersed nozzle is designed to flat, and the thickness of resistance to material is thin, submersed nozzle service life It is low.
Summary of the invention:
The purpose of the present invention is low for straightening temperature in traditional vertical bending type continuous casting production process existing in the prior art, Easily form slab crack defect；After the straight high pulling rate bleed-out of arc continuous casting, accident treatment heavy workload, maintenance difficulty is high and casting machine Horizontal length is big；The frictional resistance of green shell and crystallizer wall is big in funnel-type crystallizer, and mould wall thickness is thin, and capacity is small, liquid level Fluctuation is big；Low problem of flat submersed nozzle service life, proposes a kind of production method of continuous-casting sheet billet, in this method Slab uses parallel-plate crystallizer castable, and into after secondary cooling zone, band wick-containing slab is under the effect of interior outer arc bilateral pressure, warp Distinctive Lengthened vertical roller column, are substantially thinned slab thickness, are bent and align using big arc radius, with drawing speed 4 ~6m/min produces with a thickness of 80~120mm slab.The continuous casting producing method of the sheet billet overcomes existing sheet billet crackle The problems such as defect incidence is high, and maintenance operation is complicated, crystallizer capacity is small, and frictional resistance is big and the submersed nozzle service life is short, it is real The high casting speed continuous casting of sheet billet is showed.
To achieve the above object, the invention adopts the following technical scheme:
A kind of production method of continuous-casting sheet billet, is completed using casting machine, comprising the following steps:
(1) formation of casting blank shell:
Molten steel is sent into crystallizer through submersed nozzle, water flowing is cooling inside crystallizer, and molten steel is made to meet copper cooling wall, table Layer crystallization and freezing forms internal band wick-containing slab, and crystallizer is in high-frequency vibration bottom knockout, will under the tractive force of lower part slab Band wick-containing slab pulls out crystallizer；Wherein, the submersed nozzle is straight tube shape bilateral opening submersed nozzle, the knot Brilliant device is parallel-plate crystallizer, and parallel-plate exit thickness is 200mm；
(2) being thinned with wick-containing slab thickness and cooling:
After band wick-containing slab goes out crystallizer, into two cold vertical sections, through depressing under roll-in, in entire two cold vertical section stagnation pressures Lower amount is 80~120mm, and is cooled down in secondary cooling zone to band wick-containing slab, until slab wick-containing all solidifies；Wherein, described Two cold vertical segment length be 4~7m, the cold vertical section of described two be equipped with 6 groups of pressure rollers；
(3) bending straightening of slab:
It is thinned to wick-containing slab thickness after being sized, two cold segmental arcs is entered under the action of bending roll, through multiple spot Slowly bending, then slowly aligning is level, until two cold segmental arc out, wherein the cold segmental arc radius >=7m of casting machine two, The cold segmental arc of described two is equipped with bending roll, and the bending roll is arranged in two cold segmental arc section starts；
(4) the high pulling rate of slab pulls out crystallizer:
Under driven roller driving synchronous with motor, slab is moved downward, and with the speed of 4~6m/min, pulls out slab, institute The slab stated is sheet billet, with a thickness of 80~120mm.
In the step (1), the water coolant water temperature is 35~40 DEG C, and water is 5800~6500L/min.
The casting machine is equipped with secondary cooling zone and horizontal segment, and the secondary cooling zone includes two cold vertical sections and two cold segmental arcs, The horizontal segment is equipped with 2 groups of straightening rolls, is equipped with 5~8 pairs of driven rollers in the cold segmental arc of casting machine two and horizontal segment.
In the step (2), two cold vertical section pressures divide 3 sections, and drafts is distributed in entire two cold vertical sections, due to casting Blank strip has wick-containing, and therefore, required depressing force is smaller, meanwhile, pressure is using outer arc in slab simultaneously to pressure by the way of central reduction Under, 40~60mm of unilateral green shell deflection.Slab deforms under the pressure of pressure roller, and overall reduction is exported to from crystallizer into curved The mode being gradually reduced before tune be distributed in two cold vertical sections (such as: drafts 120mm, then paragraph 1 depress 60mm, the 2nd section Depress 40mm, the 3rd section of pressure 20mm), 80~120mm will be pressed down to from 200mm with wick-containing slab.
It in the step (2), adopts and is water-cooled in two cold vertical sections, specific water is 2.0~3.5L/kg, cold into two Cooling using aerosol after segmental arc, specific water is 1.0~2.0L/kg, until slab wick-containing all solidifies, metallurgical length 20~ 25m。
For sheet billet in the technology using the equipment production of distinctive continuously casting, which has 200mm think gauge parallel Plate crystallizer, lengthens two cold vertical section roller column arrangement (4m at long section slab band wick-containing pressure (80~120mm of drafts) ≤ bis- cold vertical section≤7m) and the features such as big arc radius (>=7m), it is detailed in Fig. 4.
Beneficial effects of the present invention:
(1) the parallel-plate crystallizer for using 200mm thickness, significantly reduces the friction of casting blank shell and crystallizer wall, mentions High slab quality and crystallizer service life；In addition, mould wall thickness increases, capacity increases, and the stability of mold liquid level increases, Be conducive to slab quality control；
(2) submersed nozzle being open using universal straight barrel type bilateral, service life are higher than flat submersed nozzle, together When, using the copper plate of crystallizer and submersed nozzle of general-purpose type, the manufacturing cost of sheet billet is greatly reduced；
(3) casting machine height is lower than vertical bending type casting machine, is higher than straight arc casting machine, has been provided simultaneously with the advantage of two kinds of casting machines, again It is high to avoid vertical bending type casting machine height, the problem of investment is high, and straight arc casting machine length is big, producing line length limited；
(4) after slab goes out crystallizer, in straightway, when bleed-out accident occurs, smaller, dimension is influenced on the equipment of lower section It repairs, it is easy for installation；
(5) slab levelling with liquid core, temperature is relatively high, and straightening force is small, and bending and aligning defect are few.
Detailed description of the invention:
Fig. 1 is CSP vertical with bending type continuous casting machine structural schematic diagram；
Fig. 2 is the straight circular-arc type continuous casting machine structural schematic diagram of ESP；
Fig. 3 is funnel-type crystallizer and immersion type water nozzle structure schematic diagram, wherein 3 (a) be funnel-type crystallizer, 3 (b) For submersed nozzle；
Fig. 4 is the casting machine that the embodiment of the present invention 1 uses and slab operation figure, wherein 1- parallel-plate crystallizer, 2- pressure Roller, the cold vertical section of 3- bis-, 4- bending roll, the cold segmental arc of 5- bis-, the slab of 6- levelling with liquid core, 7- straightening roll, 8- horizontal segment；
Fig. 5 is the sectional view for the submersed nozzle that parallel-plate crystallizer and straight tube bilateral are open, wherein 5 (a) be longitudinal section Figure, 5 (b) be cross-sectional view.
Specific embodiment:
Below with reference to embodiment, the present invention is described in further detail.
Embodiment 1:
Molten steel is typical case's Q195 ingredient in the present embodiment；20 DEG C of molten steel overheat；
The casting machine and slab operation figure of use depress roller 2 as shown in figure 4, casting machine structure includes parallel-plate crystallizer 1, and two Cold vertical section 3, bending roll 4, two cold segmental arcs 5, straightening roll 7, horizontal segment 8；The leaching of parallel-plate crystallizer and straight tube bilateral opening The sectional view for entering the formula mouth of a river is as shown in Figure 5, wherein 5 (a) be longitudinal section, and 5 (b) be cross-sectional view, and molten steel is through straight tube shape bilateral Be open submersed nozzle, and molten steel is sent into the parallel-plate straight mo(u)ld 1 of exit thickness 200mm, forms the slab with wick-containing, throwing Out after crystallizer, into two cold vertical sections 3, the long 4.8m of the section is depressed by 6 groups of pressure rollers 2, and overall reduction is 80mm, the drafts are distributed in entire two cold vertical sections 3, since slab has wick-containing, required depressing force is smaller, meanwhile, Pressure is using outer arc in slab while to depressing by the way of central reduction, unilateral green shell deflection 40mm, in the region by slab The contraction of roll gap, overall reduction are distributed in two cold vertical sections in a manner of being gradually reduced before being exported to from crystallizer into bending section It is interior, it will be pressed down to 120mm from 200mm with wick-containing slab, and enter radius 7m's under the action of bending roll 4 with wick-containing slab later Two cold segmental arcs 5, are slowly bent through multiple spot, and in conjunction with straightening roll 7, slowly aligning is level, form the slab 6 of levelling with liquid core, and two Cold vertical section 3, which is adopted, to be water-cooled, specific water 3.5L/kg, into two cold segmental arcs 5 after it is cooling using aerosol, specific water is 2.0L/kg, until slab wick-containing all solidifies, metallurgical length 22m is disposed with 5~8 groups of drives in two cold segmental arcs 5 and horizontal segment 8 Dynamic roller, driving slab are produced with drawing speed 4.5m/min with a thickness of 120mm slab.
Embodiment 2:
Molten steel is typical case's Q235A ingredient；
Casting machine and slab the operation figure that the present embodiment uses are with embodiment 1, and 15 DEG C of molten steel overheat, through straight tube shape double-side opening Molten steel, is sent into the parallel-plate straight mo(u)ld of exit thickness 200mm by mouth submersed nozzle, forms the slab with wick-containing, and throwing goes out After crystallizer, into two cold vertical sections, the long 5.8m of the section is depressed, overall reduction 100mm by 6 groups of pressure rollers, should Drafts is distributed in entire two cold vertical sections, since slab has wick-containing, required depressing force is smaller, meanwhile, pressure uses Outer arc is depressed to the mode of central reduction simultaneously in slab, unilateral green shell deflection 50mm, in the region by the receipts of slab roll gap Contracting, overall reduction are distributed in two cold vertical sections in a manner of being gradually reduced before being exported to from crystallizer into bending section, will be with liquid Core slab is pressed down to 100mm from 200mm, enters the two cold arcs of radius 7m under the action of bending roll with wick-containing slab later Section, is slowly bent through multiple spot, and it is horizontal for slowly aligning in conjunction with straightening roll, forms the slab of levelling with liquid core, two cold vertical sections are adopted Be water-cooled, specific water 3.5L/kg, into two cold segmental arcs after it is cooling using aerosol, specific water is 1.0~2.0L/kg, directly All solidified to slab wick-containing, metallurgical length 24m, be disposed with 8 groups of driven rollers in two cold segmental arcs and horizontal segment, drive slab with Drawing speed 5m/min produces with a thickness of 100mm slab.
Embodiment 3:
Molten steel is typical case's Q235B ingredient；
15 DEG C of molten steel overheat, through straight tube shape bilateral opening submersed nozzle, molten steel is sent into the flat of exit thickness 200mm Andante straight mo(u)ld forms the slab with wick-containing, and after throwing goes out crystallizer, into two cold vertical sections, the long 7m of the section passes through 6 Group pressure roller 2 is depressed, and overall reduction 120mm, the drafts is distributed in entire two cold vertical sections, since slab has liquid Core, therefore, required depressing force are smaller, meanwhile, pressure is using outer arc in slab while to depressing by the way of central reduction, unilateral base Shell deflection 50mm, in the region by the contraction of slab roll gap, overall reduction with before being exported to from crystallizer into bending section gradually Reduced mode is distributed in two cold vertical sections, will be pressed down to 80mm from 200mm with wick-containing slab, and band wick-containing slab is pushing up later The two cold segmental arcs for entering radius 7m under the action of roller, are slowly bent through multiple spot, are slowly aligned in conjunction with straightening roll as level, shape At the slab of levelling with liquid core, two cold vertical sections, which are adopted, to be water-cooled, specific water 3.5L/kg, into two cold segmental arcs after use Aerosol is cooling, specific water 2.0L/kg, until slab wick-containing all solidifies, metallurgical length 25m, in two cold segmental arcs and level Section is disposed with 8 groups of driven rollers, and driving slab is produced with drawing speed 6m/min with a thickness of 80mm slab.

Claims (4)

1.一种连铸薄板坯的生产方法，其特征在于，采用铸机完成，具体包括以下步骤：1. a production method of continuous casting thin slab, is characterized in that, adopts caster to finish, specifically comprises the following steps: (1)铸坯坯壳的形成：(1) Formation of billet shell: 将钢水经浸入式水口送入结晶器内，结晶器内部通水冷却，使钢水遇铜冷却壁，表层结晶凝固，形成内部带液芯铸坯，结晶器在高频振动下脱模，在下部铸坯的牵引力下，将带液芯铸坯拉出结晶器；其中，所述的浸入式水口为直筒形双侧开口浸入式水口，所述的结晶器为平行板结晶器，平行板出口厚度为200mm；The molten steel is sent into the crystallizer through the submerged nozzle, and the inside of the crystallizer is cooled by water, so that the molten steel meets the copper cooling wall, and the surface layer crystallizes and solidifies to form a casting billet with a liquid core inside. Under the traction force of the casting slab, the casting slab with liquid core is pulled out of the mold; wherein, the submerged nozzle is a straight cylindrical submerged nozzle with double-sided openings, the mold is a parallel plate mold, and the thickness of the outlet of the parallel plate is 200mm; (2)带液芯铸坯厚度的减薄和冷却：(2) Thinning and cooling of slab thickness with liquid core: 带液芯铸坯出结晶器后，进入二冷垂直段，经压下辊压下，在整个二冷垂直段总压下量为80～120mm，并在二冷段对带液芯铸坯进行冷却，直至铸坯液芯全部凝固；其中，所述的二冷垂直段长度为4～7m，所述的二冷垂直段设有6组压下辊；After the billet with liquid core exits the crystallizer, it enters the vertical section of secondary cooling, and is pressed by rollers. The total reduction in the vertical section of secondary cooling is 80-120mm, and the billet with liquid core is processed cooling until the liquid core of the billet is completely solidified; wherein, the length of the vertical section of the secondary cooling is 4-7m, and the vertical section of the secondary cooling is provided with 6 sets of pressing rollers; (3)铸坯的弯曲矫直：(3) Bending and straightening of billets: 带液芯铸坯厚度减薄到设定尺寸后，在顶弯辊的作用下进入二冷弧形段，经多点缓慢弯曲，再缓慢矫直为水平，直至出二冷弧形段，其中，所述的铸机二冷弧形段半径≥7m，所述的二冷弧形段设有弯曲辊，所述的顶弯辊设置在二冷弧形段起始处；After the thickness of the cast slab with liquid core is reduced to the set size, it enters the secondary cooling arc section under the action of the top bending roller, slowly bends through multiple points, and then slowly straightens to level until it exits the secondary cooling arc section. , the radius of the second cold arc section of the casting machine is ≥7m, the second cold arc section is provided with bending rollers, and the top bending roller is arranged at the beginning of the second cold arc section; (4)铸坯高拉速拉出结晶器：(4) The billet is pulled out of the mold at a high pulling speed: 在驱动辊和电机同步驱动下，铸坯向下运动，并以4～6m/min的速度，拉出铸坯，所述的铸坯即为薄板坯，厚度为80～120mm。Driven synchronously by the drive roller and the motor, the casting slab moves downwards and is pulled out at a speed of 4-6 m/min. The casting slab is a thin slab with a thickness of 80-120 mm. 2.根据权利要求1所述的连铸薄板坯的生产方法，其特征在于，所述的铸机设有二冷段和水平段，所述的二冷段包括二冷垂直段和二冷弧形段，所述的水平段设有2组矫直辊，在铸机二冷弧形段和水平段设有5～8对驱动辊。2. The production method of continuous casting thin slab according to claim 1, characterized in that, said casting machine is provided with a secondary cooling section and a horizontal section, and said secondary cooling section comprises a secondary cooling vertical section and a secondary cooling arc Shaped section, the horizontal section is provided with 2 sets of straightening rollers, and 5 to 8 pairs of driving rollers are provided in the second cold arc section and the horizontal section of the casting machine. 3.根据权利要求1所述的连铸薄板坯的生产方法，其特征在于，所述的步骤(1)中，所述的水冷却水温为35～40℃，水量为5800～6500L/min。3 . The production method of continuous casting thin slab according to claim 1 , characterized in that, in the step (1), the temperature of the water cooling is 35-40° C., and the water volume is 5800-6500 L/min. 4.根据权利要求1所述的连铸薄板坯的生产方法，其特征在于，所述的步骤(2)中，在二冷垂直段采用水冷却，比水量为2.0～3.5L/kg，进入二冷弧形段后采用气雾冷却，比水量为1.0～2.0L/kg，直至铸坯液芯全部凝固，冶金长度20～25m。4. The production method of continuous casting thin slab according to claim 1, characterized in that, in the step (2), water cooling is adopted in the vertical section of the secondary cooling, the specific water volume is 2.0-3.5L/kg, and the Air mist cooling is adopted after the secondary cooling arc section, and the specific water volume is 1.0-2.0L/kg until the liquid core of the slab is completely solidified, and the metallurgical length is 20-25m.
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CN110125348A (en) * 2019-04-29 2019-08-16 中冶南方连铸技术工程有限责任公司 Round billet continuous casting billet withdrawing technology method
CN110961592A (en) * 2019-12-16 2020-04-07 唐山钢铁集团有限责任公司 Method for controlling bleed-out in continuous casting of high-casting-speed sheet billet
CN113333707A (en) * 2021-06-11 2021-09-03 陕钢集团汉中钢铁有限责任公司 Method for casting rectangular blank in non-clamping section of R10-meter arc continuous casting machine
CN114472834A (en) * 2022-02-17 2022-05-13 山东钢铁股份有限公司 Continuous production system and continuous production method of composite casting blank
CN114505458A (en) * 2020-11-15 2022-05-17 上海梅山钢铁股份有限公司 Stopper rod flow control system control method for improving crystallizer liquid level stability
CN114734010A (en) * 2022-03-18 2022-07-12 首钢京唐钢铁联合有限责任公司 Production method for thin slab continuous casting and rolling on-line casting blank thinning
CN115415489A (en) * 2022-09-05 2022-12-02 东北大学 Aluminum/aluminum alloy thin slab continuous casting equipment and process

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CN115415489A (en) * 2022-09-05 2022-12-02 东北大学 Aluminum/aluminum alloy thin slab continuous casting equipment and process
CN115415489B (en) * 2022-09-05 2024-02-13 东北大学 Aluminum/aluminum alloy thin slab continuous casting equipment and process

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