CN109093084B - A kind of production method of continuous casting thin slab - Google Patents
A kind of production method of continuous casting thin slab Download PDFInfo
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- CN109093084B CN109093084B CN201811146706.3A CN201811146706A CN109093084B CN 109093084 B CN109093084 B CN 109093084B CN 201811146706 A CN201811146706 A CN 201811146706A CN 109093084 B CN109093084 B CN 109093084B
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000005266 casting Methods 0.000 claims abstract description 123
- 238000001816 cooling Methods 0.000 claims abstract description 77
- 239000007788 liquid Substances 0.000 claims description 46
- 238000005452 bending Methods 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000498 cooling water Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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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
The invention relates to a production method of a continuous casting sheet billet, belonging to the technical field of continuous casting of sheet billets, comprising the following steps: the casting blank is cast and formed by a parallel plate crystallizer, enters a secondary cooling section, passes through an elongated vertical roller row section, is pressed down by inner and outer arc double-side long sections, is greatly reduced in thickness, is bent and straightened through a large arc radius, and is driven synchronously by a plurality of groups of driving rollers to produce a thin slab with the thickness of 80-120 mm at the blank drawing speed of 4-6 m/min. The continuous casting production method of the sheet billet overcomes the problems of complex continuous casting process, small crystallizer capacity, large friction resistance, short service life of a submerged nozzle and the like of the existing sheet billet, and realizes the high-casting-speed continuous casting of the sheet billet.
Description
The technical field is as follows:
the invention belongs to the technical field of continuous casting of sheet billets, and particularly relates to a production method of a continuous casting sheet billet.
Background art:
the continuous casting and rolling process for thin slab combines traditional conticaster, heating furnace and hot rolling mill organically, and is a new technology of compact steel production flow.
The first continuous casting and rolling production line of the thin slab in the world adopts the CSP technology of Germany Simmark, and is built and put into production by Nikoc corporation in America. The thin slab is cast by a vertical bending type continuous casting machine, the casting machine consists of a funnel-shaped crystallizer, a vertical secondary cooling section, a bending and straightening section and a horizontal section, the detailed description is shown in figure 1, the thickness of the continuous casting slab is 50mm, and the thickness of the continuous casting slab is closer to the thickness of a final finished product compared with the thickness of a traditional slab (200-250 mm), and the continuous casting slab is called as the thin slab.
One of the representative techniques of thin slabs: according to the CSP technology of Germany Simmark, a casting machine is formed as shown in figure 1, namely, a vertical bending type continuous casting mode is adopted to produce a thin slab, molten steel is poured into a funnel-shaped crystallizer with the outlet thickness of 50-90 mm to form a casting blank with a liquid core, the casting blank is drawn in a vertical state, a secondary cooling section is cooled by full water, the casting blank is in a vertical state before being completely solidified, the length of the vertical section is 9-11 m, the casting blank enters a bending and straightening section after being completely solidified, the metallurgical length is less than or equal to 11m, the radius of the casting machine is 3.0-3.5 m, the casting blank is bent at 90 degrees and is in a horizontal state, and the casting blank with the thickness of 50-90 mm is output at the. According to the production mode of the thin slab, the casting blank is solidified in the vertical section, and the secondary cooling full water is used for cooling, so that the thin slab has the advantages of easiness in floating of impurities, more uniform solidification of the casting blank and light segregation.
The second representative technique of thin slabs: the production line adopts an ultra-high-speed continuous casting mode, realizes production of casting blanks with the thickness of 90-110 mm, and meets the integrated requirements of continuous casting and hot rolling due to high drawing speed and large steel passing amount, thereby realizing endless rolling.
The technology adopts a straight arc continuous casting machine to produce a thin slab, the casting machine is formed as shown in figure 2, molten steel is poured into a funnel-shaped crystallizer with an outlet of which the thickness is 90-110 mm to form a casting blank with a liquid core, the casting blank enters a bending section after being discharged from the crystallizer, the vertical section is only 1.5-2 m long, the casting blank is bent and straightened under the state with the liquid core, the radius of the casting machine is 5m, the casting blank of a secondary cooling section is cooled by adopting aerial fog, the metallurgical length is 20m, the casting blank is gradually straightened and horizontally discharged from the secondary cooling section, and the casting blank with the thickness of 90-110 mm is output at the speed of 4-6 m/.
The method for producing the thin slab has the advantages that: (1) the casting blank is bent into an arc shape under the state of carrying the liquid core, and the height of the casting machine is greatly reduced; (2) the deformation temperature of the bending and straightening of the casting blank is higher, and the incidence rate of the cracks of the casting blank is low.
In the existing thin slab production technology, in order to achieve a thinner slab thickness, a thinner crystallizer is adopted, the middle part of the thin crystallizer is designed into a funnel shape in order to accommodate a submerged nozzle, so that the placement of the submerged nozzle is satisfied, as shown in fig. 3(a) and 3(b), in order to adapt to the thin crystallizer, the submerged nozzle is also designed into a flat shape, and the refractory material thickness is thinner.
The existing thin slab continuous casting has the following problems:
1. CSP vertical bending type continuous casting problem: (1) straightening after the casting blank is completely solidified, wherein the temperature is low, the required straightening force is large, and crack defects are easy to occur; (2) the casting machine is high, generally more than 10m, the investment of factory buildings is high, and the operation is inconvenient.
2. ESP straight arc continuous casting problem: (1) after the casting blank is discharged from the crystallizer, the casting blank immediately enters a bending section, and after steel leakage at a high drawing speed, the accident damage range is large, the maintenance difficulty is high, and the workload is large; (2) the height of the casting machine is reduced, but the length of the horizontal section is greatly increased, the length of the whole production line is increased, the capital investment is increased, and the feasibility limited by the length of the production line is poor.
3. Funnel crystallizer problem: (1) in the process of pulling the casting blank out of the crystallizer, the friction resistance between the blank shell and the wall of the crystallizer is large, and the casting blank cracks and the crystallizer abrasion are easily caused; (2) the crystallizer is thin in thickness and small in capacity, and the liquid level fluctuation of molten steel in the crystallizer is large under the condition of high flow, so that the control is not facilitated;
4. the problem of an immersion type water gap: the submerged nozzle is designed to be flat, the thickness of refractory materials is thin, and the service life of the submerged nozzle is short.
The invention content is as follows:
the invention aims to overcome the defects that the straightening temperature is low and the casting blank cracks are easy to form in the traditional vertical bending type continuous casting production process in the prior art; after straight arc-shaped continuous casting and high-drawing-speed steel breakout, the accident handling workload is large, the maintenance difficulty is high, and the horizontal length of a casting machine is large; the frictional resistance between the blank shell in the funnel-shaped crystallizer and the wall of the crystallizer is large, the thickness of the crystallizer is thin, the capacity is small, and the fluctuation of the liquid level is large; the method is characterized in that a casting blank is formed by a parallel plate crystallizer in a pouring mode, after the casting blank enters a secondary cooling section, the casting blank with a liquid core is subjected to special elongated vertical roller arrays under the action of pressure of inner arcs and outer arcs on two sides, the thickness of the casting blank is greatly reduced, and the casting blank with the thickness of 80-120 mm is produced at the blank drawing speed of 4-6 m/min through bending and straightening with a large arc radius. The continuous casting production method of the thin slab overcomes the problems of high crack defect incidence rate, complex maintenance and operation, small crystallizer capacity, large frictional resistance, short service life of a submerged nozzle and the like of the existing thin slab, and realizes the high-casting speed continuous casting of the thin slab.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production method of a continuous casting sheet billet is completed by adopting a casting machine, and comprises the following steps:
(1) forming a casting blank shell:
sending molten steel into a crystallizer through an immersion nozzle, introducing water into the crystallizer for cooling, so that the molten steel meets a copper cooling wall, crystallizing and solidifying the surface layer of the molten steel to form a casting blank with a liquid core inside, demoulding the crystallizer under high-frequency vibration, and pulling the casting blank with the liquid core out of the crystallizer under the traction force of a lower casting blank; the submerged nozzle is a straight-cylinder type submerged nozzle with openings on two sides, the crystallizer is a parallel plate crystallizer, and the thickness of an outlet of the parallel plate is 200 mm;
(2) and (3) thickness reduction and cooling of the casting blank with the liquid core:
after the casting blank with the liquid core is discharged from the crystallizer, the casting blank enters a secondary cooling vertical section, is pressed down by a lower pressing roller, the total pressure reduction of the whole secondary cooling vertical section is 80-120 mm, and the casting blank with the liquid core is cooled in the secondary cooling section until the liquid core of the casting blank is completely solidified; the length of the secondary cooling vertical section is 4-7 m, and the secondary cooling vertical section is provided with 6 groups of press rolls;
(3) bending and straightening of a casting blank:
after the thickness of the casting blank with the liquid core is reduced to a set size, the casting blank enters a secondary cooling arc section under the action of a top bending roller, is slowly bent at multiple points and is slowly straightened to be horizontal until the secondary cooling arc section is produced, wherein the radius of the secondary cooling arc section of the casting machine is more than or equal to 7m, the secondary cooling arc section is provided with the bending roller, and the top bending roller is arranged at the starting position of the secondary cooling arc section;
(4) and (3) pulling the casting blank out of the crystallizer at a high pulling speed:
and under the synchronous drive of the driving roller and the motor, the casting blank moves downwards and is pulled out at the speed of 4-6 m/min, and the casting blank is a thin slab with the thickness of 80-120 mm.
In the step (1), the water cooling temperature is 35-40 ℃, and the water amount is 5800-6500L/min.
The casting machine be equipped with two cold sections and horizontal segments, two cold sections including two cold vertical segments and two cold arc sections, the horizontal segment be equipped with 2 groups of leveling roller, be equipped with 5~8 pairs of drive rollers at two cold arc sections of casting machine and horizontal segment.
In the step (2), the secondary cooling vertical section is reduced into 3 sections, the reduction amount is distributed in the whole secondary cooling vertical section, the casting blank is provided with a liquid core, so that the required reduction force is small, meanwhile, the reduction is carried out in a manner that the inner arc and the outer arc of the casting blank contract towards the center, and the deformation amount of a single-side blank shell is 40-60 mm. The casting blank is deformed under the pressure of the lower roller, the total reduction is distributed in the secondary cooling vertical section in a mode that the total reduction is gradually reduced from the outlet of the crystallizer to the front of the bending section (for example, the reduction is 120mm, the 1 st section is reduced by 60mm, the 2 nd section is reduced by 40mm, and the 3 rd section is reduced by 20mm), and the casting blank with the liquid core is reduced from 200mm to 80-120 mm.
In the step (2), the secondary cooling vertical section is cooled by water with the specific water amount of 2.0-3.5L/kg, and is cooled by gas spray after entering the secondary cooling arc section with the specific water amount of 1.0-2.0L/kg until the casting blank liquid core is completely solidified, and the metallurgical length is 20-25 m.
The thin slab in the technology is produced by adopting a special continuous casting device, and the device has the characteristics of a 200mm thick parallel plate crystallizer, a long-interval casting blank with liquid core reduction (reduction amount is 80-120 mm), a lengthened secondary cooling vertical section roller row arrangement mode (4m is less than or equal to the secondary cooling vertical section is less than or equal to 7m), a large arc radius (more than or equal to 7m) and the like, and is shown in detail in figure 4.
The invention has the beneficial effects that:
(1) the friction between the casting blank shell and the wall of the crystallizer is obviously reduced by adopting a parallel plate crystallizer with the thickness of 200mm, the casting blank quality is improved, and the service life of the crystallizer is prolonged; in addition, the thickness and the capacity of the crystallizer are increased, the stability of the liquid level of the crystallizer is increased, and the control of the casting blank quality is facilitated;
(2) the universal straight-cylinder type submerged nozzle with openings on two sides is adopted, the service life is longer than that of a flat submerged nozzle, and meanwhile, the universal crystallizer copper plate and the universal submerged nozzle are adopted, so that the manufacturing cost of the sheet billet is greatly reduced;
(3) the height of the casting machine is lower than that of a vertical bending type casting machine and higher than that of a straight arc type casting machine, the advantages of two casting machines are achieved, and the problems that the vertical bending type casting machine is high in height and high in investment, the straight arc type casting machine is long, and the length of a production line is limited are solved;
(4) after the casting blank is discharged from the crystallizer, in the straight line segment, when a steel leakage accident occurs, the influence on equipment below is small, and the casting blank is convenient to maintain and install;
(5) the casting blank with the liquid core is straightened, the temperature is relatively high, the straightening force is small, and the defects of bending and straightening are few.
Description of the drawings:
FIG. 1 is a schematic structural view of a CSP vertical bending type continuous casting machine;
FIG. 2 is a schematic structural view of an ESP straight arc continuous casting machine;
FIG. 3 is a schematic structural diagram of a funnel-shaped crystallizer and a submerged nozzle, wherein 3(a) is the funnel-shaped crystallizer and 3(b) is the submerged nozzle;
FIG. 4 is a drawing showing a casting machine and a slab run adopted in example 1 of the present invention, wherein 1-a parallel plate crystallizer, 2-a lower roll, 3-a secondary cooling vertical section, 4-a top bending roll, 5-a secondary cooling arc section, 6-a slab with liquid core straightening, 7-a straightening roll, and 8-a horizontal section;
FIG. 5 is a sectional view of a parallel plate mold and a straight cylinder double-side open submerged nozzle, wherein 5(a) is a longitudinal sectional view and 5(b) is a cross-sectional view.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to examples.
Example 1:
in the embodiment, the molten steel is a typical Q195 component; the superheat degree of the molten steel is 20 ℃;
the adopted casting machine and the casting blank running chart are shown in figure 4, and the casting machine structurally comprises a parallel plate crystallizer 1, a lower pressing roller 2, a secondary cooling vertical section 3, a top bending roller 4, a secondary cooling arc section 5, a straightening roller 7 and a horizontal section 8; FIG. 5 shows a cross-sectional view of a parallel plate mold and a straight-cylindrical double-side-opening submerged nozzle, wherein 5(a) is a longitudinal cross-sectional view, 5(b) is a cross-sectional view, molten steel is fed through the straight-cylindrical double-side-opening submerged nozzle into a parallel plate straight mold 1 having an outlet thickness of 200mm to form a cast slab with a liquid core, and after being discharged from the mold, the cast slab enters a secondary cooling vertical section 3 having a length of 4.8m and is reduced by 6 sets of rolls 2, the total reduction is 80mm, the reduction is distributed throughout the secondary cooling vertical section 3, since the cast slab has the liquid core, the required reduction force is small, and at the same time, the reduction is performed by simultaneously reducing the inner and outer arcs toward the center, the deformation of a single-side shell is 40mm, and the total reduction of the cast slab is distributed in the secondary cooling vertical section by reducing the total pressure of the cast slab from the outlet of the mold to the front of the bending section, the casting blank with the liquid core is reduced to 120mm from 200mm, then the casting blank with the liquid core enters a secondary cooling arc-shaped section 5 with the radius of 7m under the action of a top bending roller 4, is slowly bent at multiple points, is slowly straightened to be horizontal by combining a straightening roller 7, and forms a casting blank 6 with the liquid core for straightening, a secondary cooling vertical section 3 adopts water cooling, the specific water amount is 3.5L/kg, the casting blank enters the secondary cooling arc-shaped section 5 and is cooled by adopting aerial fog, the specific water amount is 2.0L/kg until the liquid core of the casting blank is completely solidified, the metallurgical length is 22m, 5-8 groups of driving rollers are arranged on the secondary cooling arc-shaped section 5 and the horizontal section 8, and the casting blank is driven to produce the casting blank with the thickness of 120mm at the blank drawing speed of.
Example 2:
the molten steel is a typical Q235A component;
the casting machine and the casting blank operation diagram adopted by the embodiment are the same as that of embodiment 1, the superheat degree of molten steel is 15 ℃, the molten steel is sent into a parallel plate straight crystallizer with an outlet thickness of 200mm through a straight cylinder type double-side opening submerged nozzle to form a casting blank with a liquid core, the casting blank is pulled out of the crystallizer and then enters a secondary cooling vertical section, the length of the section is 5.8m, the reduction is carried out through 6 groups of press rolls, the total reduction is 100mm, the reduction is distributed in the whole secondary cooling vertical section, the required reduction force is small because the casting blank is provided with the liquid core, simultaneously, the reduction adopts a mode that the inner arc and the outer arc of the casting blank are simultaneously contracted towards the center, the deformation of a single-side blank shell is 50mm, the total reduction is distributed in the secondary cooling vertical section in a mode that the total reduction is gradually reduced from the outlet of the crystallizer to the front of a bending section, the casting blank with the liquid core is reduced from 200mm to 100mm, and then the casting blank with the liquid core enters a secondary cooling arc section, the casting blank with the liquid core is formed by multi-point slow bending and combined with a straightening roller to be slowly straightened to be horizontal, the secondary cooling vertical section is cooled by water, the specific water amount is 3.5L/kg, the secondary cooling arc section is cooled by air mist until the liquid core of the casting blank is completely solidified, the metallurgical length is 24m, 8 groups of driving rollers are arranged on the secondary cooling arc section and the horizontal section, and the casting blank is driven to produce the casting blank with the thickness of 100mm at the blank drawing speed of 5 m/min.
Example 3:
the molten steel is a typical Q235B component;
molten steel has the superheat degree of 15 ℃, the molten steel is conveyed into a parallel plate straight crystallizer with the outlet thickness of 200mm through a straight barrel-shaped bilateral opening submerged nozzle to form a casting blank with a liquid core, the casting blank is drawn out of the crystallizer and then enters a secondary cooling vertical section, the length of the section is 7m, the reduction is carried out through 6 groups of press rolls 2, the total reduction is 120mm, the reduction is distributed in the whole secondary cooling vertical section, the required reduction force is small because the casting blank is provided with the liquid core, simultaneously, the reduction is carried out in a way that the inner arc and the outer arc of the casting blank are simultaneously contracted towards the center, the deformation of a single-side blank shell is 50mm, the total reduction is distributed in the secondary cooling vertical section in a way that the total reduction is gradually reduced from the outlet of the crystallizer to the front of a bending section, the casting blank with the liquid core is pressed from 200mm to 80mm, then the casting blank with the liquid core enters a secondary cooling arc section with the radius of 7m under the action of a top bending, and slowly straightening to be horizontal by combining a straightening roller to form a casting blank with a liquid core for straightening, cooling the secondary cooling vertical section by water with the specific water amount of 3.5L/kg, cooling the secondary cooling arc section by using gas mist with the specific water amount of 2.0L/kg until the liquid core of the casting blank is completely solidified, wherein the metallurgical length is 25m, and 8 groups of driving rollers are arranged on the secondary cooling arc section and the horizontal section to drive the casting blank to produce the casting blank with the thickness of 80mm at the blank drawing speed of 6 m/min.
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| CN110125348B (en) * | 2019-04-29 | 2021-02-26 | 中冶南方连铸技术工程有限责任公司 | Round billet continuous casting and drawing process method |
| CN110961592B (en) * | 2019-12-16 | 2021-08-13 | 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 |
| CN114505458B (en) * | 2020-11-15 | 2024-07-19 | 上海梅山钢铁股份有限公司 | Control method of stopper rod flow control system for improving stability of liquid level of crystallizer |
| CN113333707B (en) * | 2021-06-11 | 2022-08-05 | 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 |
| CN114472834B (en) * | 2022-02-17 | 2023-10-24 | 山东钢铁股份有限公司 | Continuous production system and continuous production method for composite casting blank |
| CN114734010B (en) * | 2022-03-18 | 2024-05-10 | 首钢京唐钢铁联合有限责任公司 | Production method of thin slab continuous casting and rolling online thinned casting blank |
| 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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| CN104057053B (en) * | 2013-06-14 | 2016-03-30 | 攀钢集团攀枝花钢铁研究院有限公司 | A continuous casting method for wide and thick slabs of low alloy steel |
| DE102014224390A1 (en) * | 2014-11-28 | 2016-06-02 | Sms Group Gmbh | Continuous casting plant for thin slabs |
| CN106513617B (en) * | 2016-12-30 | 2019-02-12 | 中国重型机械研究院股份公司 | A kind of device and method improving continuous casting slab quality |
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