CN114798737B - Plate shape control method for producing ultra-thin pattern plate by continuous casting and rolling of thin plate blank - Google Patents
Plate shape control method for producing ultra-thin pattern plate by continuous casting and rolling of thin plate blank Download PDFInfo
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- 238000005096 rolling process Methods 0.000 title claims abstract description 103
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000009749 continuous casting Methods 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 13
- 241000282326 Felis catus Species 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 21
- 238000005266 casting Methods 0.000 claims description 20
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 12
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
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- 241001417490 Sillaginidae Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
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- 238000010924 continuous production Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
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Abstract
The invention discloses a plate shape control method for producing an ultra-thin pattern plate by continuous casting and rolling of a thin plate blank, belonging to the technical field of pattern plate production, wherein: c in the smelted molten steel: 0.01 to 0.06 percent, mn is more than or equal to 0.06 percent; continuous casting: the temperature of the cat ear is controlled at 45-55 ℃; tandem rolling: the rough rolling inlet temperature is not lower than 960 ℃, and the finish rolling outlet temperature is not lower than 820 ℃; the F5 working roll in finish rolling is in a single-cone section pattern roll shape, a 0-100 um convexity roll shape is adopted, and the convexity of the lower working roll is-100-300 um; f3, F4, F5 are put into a roll shifting mode; the rolling force of the stand is set by adopting a control method that F1 and F2 are gradually increased; f3 and F4 gradually decrease in load; f5 rolling is carried out for 1.2mm, and when the specification is below, the F5 rolling force is 0.9-1.1 MN; the coiling temperature is 530-630 ℃. Compared with the prior art, the probability of occurrence of plate shape failure is effectively reduced.
Description
Technical Field
The invention relates to a steel production technology, in particular to a plate shape control method for producing thin pattern plates based on a thin plate blank continuous casting and rolling production line.
Background
The checkered plate is widely applied to an anti-skid steel plate for construction, transportation and public places, and in recent years, the requirements of customers on strip steel thinning and plate shape quality are improved. In order to meet the market demand, the inventor develops a method for producing a thin-specification patterned steel plate based on an ESP thin slab continuous casting and rolling process (CN 201610402699.3) and smelts raw materials in a converter and an LF furnace; molten steel smelted from the LF furnace is processed by an ESP production line, a patterned roller and a concave roller to generate patterned strip steel with different thickness specifications of 1.2-1.5 mm.
But the technical proposal can mass produce the pattern plates with the thin specification of 1.2-1.5 mm, and simultaneously, because the pattern rollers use concave rollers, the local stress concentration of the rollers is easy to be caused along with the extension of the rolling kilometers, and the roller wear forms box-shaped holes seriously, the plate shape is not controlled in the later stage of rolling, so the rolling mileage is limited (less than 50 km). Meanwhile, when the ultra-thin gauge (1.0-1.2 mm) is produced, obvious side waves exist at the later stage of rolling, the requirement of a customer can be met only by flattening for a plurality of times, the secondary flattening rate reaches 19.8%, and meanwhile, a small amount of severe wave-shaped steel coils still cannot meet the use requirement of the customer after flattening for a plurality of times, so that the production cost of enterprises is greatly increased.
In order to meet the thinning requirement of customers on the checkered plates and simultaneously meet the plate shape quality of the checkered plates with extremely thin specifications (1.0-1.2 mm), a production method of the checkered plates with extremely thin specifications, which can realize mass production and has good plate shape precision, is urgently needed, and higher added values are created for enterprises while meeting the requirements of customers.
Disclosure of Invention
The technical task of the invention is to provide a plate shape control method for producing an ultra-thin pattern plate by continuous casting and rolling of a thin plate blank aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows: a strip shape control method for producing ultra-thin pattern plates by continuous casting and rolling of thin slabs comprises smelting, continuous casting, continuous rolling and cooling coiling, wherein the continuous rolling comprises rough rolling, induction heating and finish rolling; the method is characterized in that:
S1, smelting: and C in the molten steel: 0.01 to 0.06 percent, mn is more than or equal to 0.06 percent;
s2, continuous casting: the temperature of the cat ear is controlled at 45-55 ℃;
S3, continuous rolling: the rough rolling inlet temperature is not lower than 960 ℃, and the finish rolling outlet temperature is not lower than 820 ℃; in finish rolling, F1, F2 and F3 adopt high-speed steel rollers, F4 adopts high-speed steel rollers or high-nickel-chromium rollers, and F5 adopts high-nickel-chromium rollers; f5 working roll is a single-cone section pattern roll shape, adopting a 0-100 um convexity roll shape, and the convexity of the lower working roll is-100-300 um; f3, F4, F5 are put into a roll shifting mode; the rolling force of the stand is set by adopting a control method that F1 and F2 are gradually increased, and the rolling force range is 1.4-2.3 MN; f3 and F4 gradually decrease in load, and the rolling force is controlled between 1.2MN and 1.9 MN; f5 rolling is carried out for 1.2mm, and when the specification is below, the F5 rolling force is 0.9-1.1 MN;
s4, cooling and coiling: the coiling temperature is 530-630 ℃.
In the continuous casting, the continuous casting pulling speed is increased from 3.8m/min to 4.8m/min within 200t before casting, and the temperature difference of the transverse section of the casting blank is less than 30 ℃.
In the continuous casting, the pulling speed is more than or equal to 4.8m/min after the steel is passed for 200t, and the temperature difference of the transverse section of the casting blank is less than 25 ℃.
In the continuous rolling, the inlet temperature of rough rolling is not lower than 960 ℃, the induction heating temperature is not higher than 1170 ℃, the outlet temperature of finish rolling is not lower than 820 ℃ within 200t before casting, and the production thickness specification is kept to be more than or equal to 1.5mm.
In the finish rolling, F4 is used for selecting the material of the roller according to the mileage, the kilometer of the rolling range is more than or equal to 80KM, a high-speed steel roller is adopted, and a high-speed steel roller or a high-nickel-chromium roller is adopted for less than 80 KM.
In the finish rolling, the kilometer per casting number is more than 100KM, and F1 and F2 are put into a roll shifting mode.
In the finish rolling, the convexity of the back-up roll is 200 μm.
In the cooling winding, the laminar cooling mode is the front stage cooling.
And side blowing is added behind the front section cooling header.
In the cooling coiling, the opening degree of the side guide plate of the high-speed flying shears and the coiling machine is controlled according to the sparkless.
Compared with the prior art, the invention has the following outstanding beneficial effects:
1. The invention adopts the continuous casting process, the roller shape design and the automatic control model to be adjusted in a multi-aspect way, the main rolling is less than or equal to 1.2mm of thin pattern steel plates, the production mileage of single-rolling-process pattern plates is more than 80km, the limit thin pattern proportion of less than or equal to 1.2mm accounts for more than 63%, the primary leveling reject ratio is reduced from the initial 19.8% to 0.05%, and the annual leveling cost is reduced by millions of yuan;
2. The method improves the plate shape of the checkered plate with extremely thin specification (1.0-1.2 mm), effectively reduces the occurrence probability of plate shape failure, greatly improves the quality of the physical plate shape, and reduces customer quality objection claims while maintaining enterprise brands.
Detailed Description
The invention is further described below in connection with the following detailed description.
For the purposes of the following detailed description, it is to be understood that the invention may assume various alternative variations and step sequences, except where expressly specified to the contrary. Furthermore, all numbers expressing, for example, quantities of ingredients used in the specification and claims, other than in any operating example or where otherwise indicated, are to be understood as being modified in all instances by the term "about". At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
It should also be understood that any numerical range recited herein is intended to include all sub-ranges subsumed therein. For example, a range of "1 to 10" is intended to include all subranges between (and including) the stated minimum value of 1 and the stated maximum value of 10, that is, having a minimum value equal to or greater than 1 and a maximum value equal to or less than 10.
In the present application, the use of the singular includes the plural and plural encompasses singular, unless specifically stated otherwise. In addition, in the present application, unless explicitly stated otherwise, the use of "or" means "and/or", even if "and/or" may be explicitly used in some cases. Further, in the present application, the use of "a" or "an" means "at least one" unless specifically stated otherwise. For example, "a" first material, "a" coating composition, etc., refer to one or more of any of these items.
The invention provides a plate shape control method for producing an ultra-thin pattern plate by continuous casting and rolling of a thin plate blank.
S1, smelting
The design range of the components of the molten steel is as follows: c:0.01 to 0.06 percent, si:0.04 to 0.1 percent, mn: 0.06-0.2%, S: less than or equal to 0.006 percent, P: less than or equal to 0.035 percent, N: less than or equal to 0.006 percent, and the balance of Fe and unavoidable impurities. The component design is based on the aim of effectively controlling the rolling force of thin gauge rolling and simultaneously reducing cost and enhancing efficiency, wherein the C content in the molten steel component is gradually reduced from thick to thin according to the condition of the thinnest casting time, and the minimum C content is 0.01%. Meanwhile, the Mn content is not related to the high-strength checkered plate, so that the components can be controlled to be below 0.1%, and the aims of reducing the cost and enhancing the efficiency are fulfilled.
And smelting the molten steel in an LF furnace and an RH furnace according to the components.
S2, continuous casting
Molten steel obtained by smelting enters a continuous casting machine to obtain a casting blank;
The continuous casting pulling speed is increased from 3.8m/min to 4.8m/min within 200t before casting, and the temperature difference of the transverse section of the casting blank is less than 30 ℃; the pulling speed is more than or equal to 4.8m/min after 200t of steel is passed, and the temperature difference of the transverse section of the casting blank is less than 25 ℃. The key is that the temperature of the corners of the casting blank is controlled to be 45-55 ℃, so that uneven wear of the two ends of a roll passing steel area caused by the too low temperature of the corners is prevented, and the strip-shaped wave is prevented from being formed in the later stage of rolling.
S3, continuous rolling
The method specifically comprises the following steps: rough rolling, induction heating and finish rolling.
In 200t before casting, the temperature of the rough rolling inlet is not lower than 960 ℃, the rough rolling intermediate billet is gradually transited from 17mm to 10mm, then the rough rolling intermediate billet passes through an induction heating furnace, the induction heating temperature is not higher than 1170 ℃, the temperature of the finish rolling outlet is not lower than 820 ℃, and the production thickness specification is kept to be more than or equal to 1.5mm. After 200t of steel is passed, the rough rolling inlet temperature is not lower than 980 ℃, the intermediate billet is transited to 8.5-10mm, the temperature of the induction heating furnace is not lower than 1090 ℃, the finish rolling outlet temperature is between 830 and 860 ℃, and the mass production specification is not more than 1.2mm of main rolled materials.
Material and roll shape control of finish rolling rolls:
1、F1、F2
All the high-speed steel rolls are fed with lines, and the roll shape adopts a cosine concave section roll shape; if the kilometer number of single casting time is more than 100KM, F1 and F2 are put into a roll shifting mode, so that the conditions of later convexity reduction and edge warping at two sides caused by larger mileage and large thin specification are prevented.
2、F3、F4
F3, adopting a high-speed steel roller; f4, selecting a roller material according to the mileage, wherein the kilometer of the rolling distance is more than or equal to 80KM, a high-speed steel roller is adopted, and a high-speed steel roller or a high-nickel-chromium roller is adopted for less than 80 KM. The roller shape is a single cone section roller shape capable of continuously shifting rollers; can effectively avoid edge wave shape caused by edge warping of the later section of the casting after the kilometer is prolonged.
3、F5
(1) Selecting a material of a working roller: and a high nickel-chromium roller is adopted, and the roller shape is adopted.
(2) Roll shape:
the prior art is that the pattern roller is a flat roller, the lower roller is a concave roller, and the plate shape good rate of large-batch rolling with the specification of less than 1.2mm (the rolling quantity is more than 600 t) cannot be effectively ensured.
The F5 working roll is in a single-cone section pattern roll shape, adopts a 0-100 um convexity roll shape, and the convexity of the lower working roll is-100-300 um, so as to ensure that the convexity of a finished product is controlled to be 10-20um.
The initial roll crown is dependent on the main embossing plate thickness, as shown in the table below.
| Thickness of main rolling | Convexity of pattern roller | Convexity of lower roller |
| 1.5mm | -100um | -300um |
| 1.2mm | -50um | -200um |
| ≤1.0mm | 0 | -100um |
Pattern roller backing roll shape: because the pattern plate production F5 adopts the special roller-shaped working roller, the special pattern roller supporting roller is correspondingly designed, the convexity of the supporting roller is adjusted to 200um, and the occurrence of the phenomenon that the roller falls off meat and the edge wave is caused by stress concentration caused by abnormal abrasion of the edge of the supporting roller is prevented.
(3) F5 roll shifting strategy: in order to ensure the smoothness of a rolling section with the specification less than or equal to 1.2mm in the later stage, the defect of plate shape and the strip steel rib lifting caused by local high points due to uneven wear in the rolling process of strip steel with the length of kilometers are avoided, and the F5 is put into an on-machine continuous dynamic roll shifting mode, so that the uneven wear and box-shaped holes caused by no roll shifting are avoided.
Setting the rolling force of a finish rolling five-stand: in order to ensure the stability of the plate shape in the later stage of rolling, the rolling force of the stand is set by adopting a control method that F1 and F2 are gradually increased, and the rolling force range is 1.4-2.3 MN; f3 and F4 gradually decrease in load, and the rolling force is controlled between 1.2MN and 1.9 MN; f5 is required to be simultaneously compatible with the formability of the pattern beans and the protection of rollers, and the rolling force of the F5 is 0.9-1.1 MN when the F5 is rolled to be 1.2mm or below. Furthermore, for the rolling program with load correction, a special code is established at the second stage, so that the rolling force of other steel grades is prevented from genetically influencing the load correction of the thin specification of the checkered plate.
S4, cooling and coiling
The laminar cooling mode is front section cooling, the coiling temperature is adjusted to 530-630 ℃ according to the thickness of the strip steel, and the high coiling temperature with the same specification is beneficial to preventing the occurrence of cooling edge waves.
And the front section cooling header pipe is added with side blowing, so that the layered cooling strip steel is ensured to have no accumulated water, and the wave shape caused by uneven cooling of the strip steel can be avoided.
In the coiling process, the opening degree of the high-speed flying shears and the side guide plate of the coiling machine are controlled according to no spark, so that the defect of plate shape caused by edge scraping due to no continuous contact between strip steel and the side guide plate is avoided.
In order to better compare the formulation of the application with the prior art, a comparative test was performed.
Examples 1 to 4 are the composition of the molten steel and the production process of the present application.
The control groups 1 and 2 adopt molten steel components and process schemes in the method for producing the thin pattern steel plate based on ESP sheet billet continuous casting and rolling process (CN 201610402699.3). In the continuous casting process, the temperature of the corners of the casting blank is not controlled, and the temperature of the cat ears fluctuates between 10 ℃ and 30 ℃; the pattern roller of finish rolling F5 is the flat roller, and the lower roll is the gravure roll, and the backing roll convexity is 100um.
1. The design of each component:
| Element(s) | C | Si | Mn | P | S | N |
| Example 1 | 0.05 | 0.048 | 0.15 | 0.01 | 0.006 | 0.002 |
| Example 2 | 0.04 | 0.06 | 0.12 | 0.012 | 0.005 | 0.004 |
| Example 3 | 0.018 | 0.06 | 0.08 | 0.01 | 0.004 | 0.003 |
| Example 4 | 0.015 | 0.045 | 0.1 | 0.01 | 0.004 | 0.002 |
| Control group 1 | 0.05 | 0.048 | 0.15 | 0.01 | 0.006 | 0.002 |
| Control group 2 | 0.02 | 0.046 | 0.1 | 0.011 | 0.004 | 0.002 |
The control of each set of production parameters is shown in the following table:
2. the rolling force settings for each set of stands are shown in the following table:
The comparison results are shown in the following table:
From the above results, it can be seen that, using the respective example groups of the present invention, a 0.8-1.5mm thick patterned steel sheet can be produced. The main rolling is less than or equal to 1.2mm of thin pattern steel plates, the production mileage of single rolling process pattern plates is more than 80km, the limit thin pattern proportion of less than or equal to 1.2mm is more than 63%, the primary leveling failure rate is reduced to 0.05% from the initial 19.8%, the actual measured thickness of the substrate of the pattern steel plates with the thickness of 1.0mm is 1.005mm, the bean height is 0.188mm, the effects on mass production and plate shape holding capacity are obvious, and the market customer requirements of the thin pattern steel plates are met. When the control group 1 is used for producing the pattern plate with the specification of 1.2mm, the probability of double-side waves is increased rapidly due to poor production matching of the roller shape, the roller shifting strategy, the load setting, the automatic control model and the like with the pattern plate with the thin specification, and higher primary leveling failure rate is generated; the comparison group 2 has the phenomenon of roll-bean collapse, and cannot meet the requirement of thin-specification batch continuous production.
It is noted that while the present invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various modifications can be made therein without departing from the spirit and scope thereof.
Claims (10)
1. A strip shape control method for producing ultra-thin pattern plates by continuous casting and rolling of thin slabs comprises smelting, continuous casting, continuous rolling and cooling coiling, wherein the continuous rolling comprises rough rolling, induction heating and finish rolling; the method is characterized in that: the pattern plate is a pattern steel plate with the thickness of 0.8-1.5mm,
S1, smelting: c in molten steel: 0.01 to 0.06 percent, mn is more than or equal to 0.06 percent;
s2, continuous casting: the temperature of the cat ear is controlled at 45-55 ℃;
S3, continuous rolling: the rough rolling inlet temperature is not lower than 960 ℃, and the finish rolling outlet temperature is not lower than 820 ℃; in finish rolling, F1, F2 and F3 adopt high-speed steel rollers, F4 adopts high-speed steel rollers or high-nickel-chromium rollers, and F5 adopts high-nickel-chromium rollers; f5 working roll is a single-cone section pattern roll shape, adopting a 0-100 um convexity roll shape, and the convexity of the lower working roll is-100-300 um; f3, F4, F5 are put into a roll shifting mode; the rolling force of the stand is set by adopting a control method that F1 and F2 are gradually increased, and the rolling force range is 1.4-2.3 MN; f3 and F4 gradually decrease in load, and the rolling force is controlled between 1.2MN and 1.9 MN; f5 rolling is carried out for 1.2mm, and when the specification is below, the F5 rolling force is 0.9-1.1 MN;
s4, cooling and coiling: the coiling temperature is 530-630 ℃.
2. The strip shape control method for producing ultra-thin gauge checkered plates by continuous casting and rolling of thin slabs according to claim 1, wherein: in the continuous casting, the continuous casting pulling speed is increased from 3.8m/min to 4.8m/min within 200t before casting time, and the temperature difference of the transverse section of a casting blank is less than 30 ℃.
3. The strip shape control method for producing ultra-thin gauge checkered plates by continuous casting and rolling of thin slabs according to claim 2, wherein: in the continuous casting, the pulling speed is more than or equal to 4.8m/min after 200t of steel is passed, and the temperature difference of the transverse section of the casting blank is less than 25 ℃.
4. The strip shape control method for producing ultra-thin gauge checkered plates by continuous casting and rolling of thin slabs according to claim 2, wherein: in the continuous rolling, the inlet temperature of rough rolling is not lower than 960 ℃, the induction heating temperature is not higher than 1170 ℃, the outlet temperature of finish rolling is not lower than 820 ℃ within 200t before casting, and the production thickness specification is kept to be more than or equal to 1.5mm.
5. The strip shape control method for producing ultra-thin gauge checkered plates by continuous casting and rolling of thin slabs according to claim 1, wherein: in the finish rolling, F4 is used for selecting a roller material according to the mileage, the kilometer of the rolling range is more than or equal to 80KM, a high-speed steel roller is adopted, and a high-speed steel roller or a high-nickel-chromium roller is adopted for less than 80 KM.
6. The strip shape control method for producing ultra-thin gauge checkered plates by continuous casting and rolling of thin slabs according to claim 1, wherein: in the finish rolling, the kilometer per casting number is more than 100KM, and F1 and F2 are put into a roll shifting mode.
7. The strip shape control method for producing ultra-thin gauge checkered plates by continuous casting and rolling of thin slabs according to claim 1, wherein: in the finish rolling, the convexity of the roller shape of the supporting roller is 200um.
8. The strip shape control method for producing ultra-thin gauge checkered plates by continuous casting and rolling of thin slabs according to claim 1, wherein: in the cooling coiling, the laminar cooling mode is front-stage cooling.
9. The strip shape control method for producing ultra-thin gauge checkered plates by continuous casting and rolling of thin slabs according to claim 8, wherein: and side blowing is added behind the front-stage cooling header.
10. The strip shape control method for producing ultra-thin gauge checkered plates by continuous casting and rolling of thin slabs according to claim 1, wherein: in the cooling coiling, the opening degree of a side guide plate of the high-speed flying shear and the coiling machine is controlled according to the sparkless.
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| CN202210453729.9A CN114798737B (en) | 2022-04-27 | 2022-04-27 | Plate shape control method for producing ultra-thin pattern plate by continuous casting and rolling of thin plate blank |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002346710A (en) * | 2001-05-29 | 2002-12-04 | Katsuhiko Yamada | Continuous casting and rolling method |
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| CN113996665A (en) * | 2021-10-30 | 2022-02-01 | 日照钢铁控股集团有限公司 | Production process for rolling extreme thin-specification checkered plate by thin slab |
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| JP2006150400A (en) * | 2004-11-29 | 2006-06-15 | Sumitomo Metal Ind Ltd | Continuous cast slab, method for producing the same, and method for producing hot-rolled steel plate |
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| CN113578961A (en) * | 2021-07-30 | 2021-11-02 | 日照钢铁控股集团有限公司 | Plate shape control method for medium-high carbon steel in thin slab continuous casting and rolling production |
| CN113996665A (en) * | 2021-10-30 | 2022-02-01 | 日照钢铁控股集团有限公司 | Production process for rolling extreme thin-specification checkered plate by thin slab |
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