CN112916616B - Process for rolling sheet billet checkered plate by common hot-rolled strip steel production line - Google Patents
Process for rolling sheet billet checkered plate by common hot-rolled strip steel production line Download PDFInfo
- Publication number
- CN112916616B CN112916616B CN202110335865.3A CN202110335865A CN112916616B CN 112916616 B CN112916616 B CN 112916616B CN 202110335865 A CN202110335865 A CN 202110335865A CN 112916616 B CN112916616 B CN 112916616B
- Authority
- CN
- China
- Prior art keywords
- rolling
- furnace
- heating
- group
- descaling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 75
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 238000010079 rubber tapping Methods 0.000 claims abstract description 16
- 238000009749 continuous casting Methods 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000005098 hot rolling Methods 0.000 abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B2001/225—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 plates, strips, bands or sheets of indefinite length by hot-rolling
Abstract
The invention discloses a process for rolling a checkered plate of a thin slab by using a common hot-rolled strip steel production line, which belongs to the field of steel manufacturing and comprises the steps of heating a continuous casting slab, rough rolling, finish rolling and coiling, wherein the step of heating the continuous casting slab comprises the following steps: the thickness of the plate blank is 75 to 90mm; controlling the temperature of the hearth according to the preheating parameters of 700 ℃, 850 ℃ for the first time, 1140 ℃ for the second time and heating parameters; adding for two times 15 minutes before tapping, uniformly heating to 20-30 ℃, and uniformly heating to 1170-1200 ℃; immediately tapping after the thin slab travels to the tapping furnace door, and controlling the furnace time to be 130 +/-10 min; the operation speed is controlled in the rough rolling procedure, and the temperature drop is controlled within 100 ℃; descaling 1 group at the back of the furnace, roughing R1 machine front 0 group, roughing R2 application 1 group, and finishing descaling application 1 group; the descaling temperature after the furnace is controlled at 1100-1130 ℃. The process utilizes the conventional hot rolling line, can mainly roll the thin plate blank checkered plate on the basis of not replacing hardware, and can effectively improve the added value of the product.
Description
Technical Field
The invention relates to a divisional application of a method for rolling checkered plates by using thin slabs (application number: 201910939783), in particular to a steel production method, and particularly relates to a checkered plate rolling method suitable for the thin slabs.
Background
The checkered plate is widely applied to an anti-skid steel plate used in construction, transportation and public places, and hot continuous rolling is a main process for producing the checkered plate. The traditional regenerative heating furnace is replaced by a double-regenerative walking beam type heating furnace, and the specification of the slab is designed to be 210/230 x (1200-2000) x 12000mm. According to the development trend of iron and steel in China and China, the sunshine iron and steel responds to the call of strategic transformation and product structure optimization of the national iron and steel industry, the thin plate blank continuous casting and rolling technology is introduced into China at first, and the sunshine iron and steel is successfully put into production before 2019. The production line is continuous casting and rolling, when casting is started or field equipment is abnormally stopped due to faults, rough rolling is accompanied with production of thin slabs, and the thin slabs are pushed out through a waste pushing mechanism after being sheared, are discharged from a production line and are stored in a warehouse. The thin slab market has limited sales volume, low profit and large inventory pressure. The thickness of the thin slab is only 70-95mm, which is equivalent to 33% -45% of that of a normal slab (210 mm), the thin slab is transported to a traditional hot rolling strip steel production line and rolled into a qualified checkered plate, because the heating furnace length (46.3 m) of the hot rolling line is provided, the slab is from steel loading to steel tapping, the furnace time is long, the furnace temperature is high, the thin slab is easy to be burnt and bent in the process of traveling in the furnace, the end wall is scratched when the thin slab is taken out of the furnace, the steel tapping fails, and the temperature is required to be reduced and the furnace is stopped for treatment. Therefore, a process suitable for rolling the pattern plate on the thin slab is urgently needed.
Disclosure of Invention
The technical task of the invention is to provide a process for rolling a sheet billet checkered plate by a common hot rolling strip steel production line aiming at the defects of the prior art.
The technical scheme for solving the technical problem is as follows: a technology for rolling a sheet billet checkered plate by a common hot-rolled strip steel production line comprises the steps of heating a continuous casting plate blank, rough rolling, finish rolling and coiling, and is characterized in that: the process of heating the continuous casting slab comprises the following steps: the thickness of the plate blank is 75-90 mm; controlling the temperature of the hearth according to the preheating parameters of 700 ℃, 850 ℃ for the first time, 1140 ℃ for the second time and heating parameters; adding two times 15 minutes before tapping, uniformly heating to 20-30 ℃, and uniformly heating to 1170-1200 ℃; immediately tapping after the sheet bar travels to the door of a tapping furnace, and controlling the furnace time to be 130 +/-10 min; the rough rolling process comprises the following steps: the R1 running speed is 3m/s, the steel is not bitten and is not thrown; r2 is rolled for 3 times, and the rolling running speed is controlled as follows: (1) when R21 is 2 m/s: r22 is 3m/s, R23 is 3.8m/s; (2) when R21 is 2.5 m/s: r22 is 3.5m/s, R23 is 4.5m/s; or R22 is 3.6m/s and R23 is 4.8m/s; the temperature drop is controlled within 100 ℃; the descaling operation in the working procedures of heating the continuous casting plate blank, rough rolling and finish rolling is as follows: descaling 1 group at the back of the furnace, roughing R1 machine front 0 group, roughing R2 application 1 group, and finishing descaling application 1 group; the descaling temperature after the furnace is controlled at 1100-1130 ℃.
Compared with the prior art, the invention has the following outstanding beneficial effects:
1. the process utilizes the conventional hot rolling line, can be mainly rolled to the thickness of less than or equal to 3.0mm on the basis of not replacing hardware, can produce 2.5mm at the thinnest at present, and breaks through the bottleneck that a heating furnace of the conventional hot rolling line cannot heat a thin slab and a rolling line cannot produce the thin slab;
2. the rough rolling adopts a proper rolling mode and a proper rolling speed, so that the temperature drop can be effectively reduced, a precondition is provided for smooth rolling of finish rolling, the requirements of the finish rolling process are met by setting reasonable heating parameters, and the thin slab (75-90 mm) can not be subjected to bending deformation;
3. the thin slab is transported to the traditional hot rolling strip steel production line and rolled into a qualified checkered plate, so that the added value of the product can be effectively improved, considerable profits are created, and the aims of potential digging and efficiency improvement are fulfilled.
Drawings
Fig. 1 is a photograph showing the head collapse of the thin slab of the control group.
Fig. 2 is a photograph of the outlet warping of the control group R1.
Fig. 3 is a photograph of the outlet buckle wrapping roller of the control group R1.
FIG. 4 is a photograph of a sheet bar tapping of the example set.
FIG. 5 shows the rough rolling temperature control of the thin slab in the example group.
FIG. 6 is a photograph of the outlet plate profile of the rough R2 thin slab of the example set.
FIG. 7 is a photograph of the surfaces of an example set of intermediate blanks and a finished product.
Detailed Description
The invention is further described with reference to the drawings and the detailed description.
The following examples and control were each a conventional regenerative furnace (double regenerative walking beam furnace) equipped with a 2150 hot rolling line, the furnace length being 46.3m and the width being 12.7m. The original design slab specification of the heating furnace is 210/230 (1200-2000) x 12000mm. The parameters and operations not mentioned in the following groups are prior art and will not be described again here. However, it should be noted that the method of the present invention is not limited to this type of hot rolling line.
Comparative example
1. Heating the continuous casting slab:
the thickness of the thin slab is 90mm.
The heating parameters (hearth temperature) follow the parameters of the conventional slab (210 mm), and specifically comprise the following steps: preheating to 850-1050 ℃, first adding 1150-1240 ℃, second adding 1260-1290 ℃ and soaking to 1250-1280 ℃.
The furnace time is as follows: the cold blank is 170-220 min.
The effective length of the thin slab is about 7500 mm. Preheating, one adds the fixed beam interval in section both sides and is 9900mm, and thin slab length is 7500mm, and the location is placed in the middle, and the unsettled 200mm in thin slab both sides, and preheat one and add the furnace chamber temperature lower, the head phenomenon that collapses can not appear. But the fixed distance between the two sides of the second and third heating plates is 10800mm, and the two sides of the thin slab are suspended 650mm. The two ends of the high-temperature section plate blank are suspended greatly, the supporting force is insufficient, and the head collapse phenomenon is easy to occur.
As a result: as shown by circles drawn in fig. 1, the fixed beam is scraped after the head is collapsed and exceeds 100mm due to the bending deformation.
2. Rough rolling
2150 the hot rolling line is provided with two rough rolling mills R1 and R2, the distance from the heating furnace to the finish rolling F1 is 247m, and the rough rolling adopts a 1+5 mode: the R1 (first roughing mill) is used for rolling 1 pass, the R2 (second roughing mill) is used for rolling 5 passes, the running time of the heating furnace to the F1 (finish rolling first frame rolling mill) is 6 '02', the descaling temperature after the furnace is 1148 ℃, the finish rolling inlet temperature is 936 ℃ and the temperature is reduced to 212 ℃. Under the same process, if a plate blank with a conventional thickness is used, the mode of 1+5 is adopted for rough rolling, and the mode of direct connection is adopted for a hot rolling box, the detection average temperature of a finish rolling inlet pyrometer is 982 ℃, and the average temperature is reduced to 158 ℃. Therefore, the temperature drop of the sheet billet of the comparison group is large, and the finish rolling inlet temperature cannot meet the process requirement.
As a result: the temperature of the thin slab furnace hearth is controlled according to the ultralow temperature, the temperature unevenness phenomenon can occur on the upper surface, the lower surface and the center part, and the rough rolling buckling coefficient can not be accurately mastered and judged by an operator, as shown in figures 2 and 3, the phenomenon of head warping or head buckling easily occurs, and the rough rolling R2 outlet upper guide is impacted, so that the waste steel or equipment is damaged and shut down.
3. Finish rolling
And (3) descaling control of rough rolling and finish rolling sections: the descaling mode is selected to be '2 +1+3+ 2', namely 2 groups of descaling after the furnace, 1 group in front of the rough rolling R1 machine, 3 groups of rough rolling R2 and 2 groups of finish rolling descaling. The increase in the number of descaling groups also increases the temperature drop of the intermediate blank.
4. Coiling
Examples
1. Heating the continuous casting slab:
the thickness of the thin slab is 90mm.
Reasonable hearth control parameters and the furnace-in time are formulated, and the hearth temperature of the heating furnace and the furnace-in time of the sheet billet are reduced.
The heating parameters (furnace temperature) were respectively: preheating 700-800 deg.c, first adding 850-950 deg.c, second adding 1140-1180 deg.c and soaking 1170-1200 deg.c. During steel loading, the heating parameters are controlled according to the lowest value of the heating parameters, the heating is carried out for two times 15 minutes before tapping, the temperature is raised by soaking for 20-30 ℃, and the descaling temperature after the furnace is controlled at 1100-1130 ℃.
Immediately tapping after the sheet bar travels to the door of the tapping furnace, and controlling the furnace time to be 130 +/-10 min. The thin slab runs in the furnace at the fastest speed, and the scheme of low-temperature fast-out is executed.
As a result: as shown in FIG. 4, no curved raised edge is present which affects the walking and normal tapping in the furnace.
2. Rough rolling: and (3) adopting a mode of '0 + 3', namely, polishing the E1R1 (a first roughing mill) and rolling the E2R2 (a second roughing mill) for 3 times, wherein the purpose of relieving buckling of an outlet of the R1 and reducing the temperature drop of a roughing area is realized. By changing the rolling mode and the running speed, the running time of the plate blank on the roller way is reduced, and the temperature drop of a rough rolling area is reduced.
Speed control: the running time of heating to finish rolling F1 was reduced to 2 '20' to 2 '50'.
As shown in the following table:
rough roll nose factor, as shown in the following table:
| rough rolling R2 | R21 | R22 | R23 |
| Coefficient of buckling | -2％～-2.5％ | -2.2％～-2.8％ | -2％～-2.5％ |
In this embodiment: the descaling temperature after the furnace is controlled to be about 1115 ℃, the finish rolling inlet temperature is about 1020 ℃, and the temperature is reduced to be about 95 ℃.
As a result: the operation time of heating to finish rolling F1 was reduced to 2'20 to 2'50 ', and the temperature drop was controlled to be within 100 ℃ (see FIG. 5, where the upper broken line indicates the inlet temperature and the lower broken line indicates the outlet temperature). The rough rolling R2 third pass is well formed (see fig. 6).
3. Finish rolling:
and (3) dephosphorization control of the rough rolling section and the finish rolling section: in order to reduce the temperature drop of the intermediate blank and ensure the surface quality of the strip steel product, the descaling mode is a mode of 1+0+1, namely 1 group of descaling at the rear of the furnace, 0 group at the front of a rough rolling R1 machine, 1 group of rough rolling R2 and 1 group of finish rolling descaling are used.
As a result: as shown in fig. 7, the intermediate billet surface and the finished strip surface were of good quality. In fig. 7, a is the furnace back descaling, b is the R2 first pass, c is the R2 third pass, and d is the finished strip surface.
4. And (4) coiling.
By adopting the technical method, the unplanned furnace shutdown caused by the end part of the thin slab being burnt and collapsed can be reduced on the basis of utilizing the existing production line. The embodiment produces qualified checkered plate, and the quality of the checkered plate produced by the conventional plate blank production mode is not different. By improving the heating process and the rolling process of the rolling line, 129 yuan can be increased for each ton of steel, and the aims of digging potential and increasing efficiency are fulfilled.
It should be noted that fig. 1 to 4, 6 and 7 in the present invention are photographs of the production process of the embodiment to assist in indicating whether to deform or not during the production, and the technical solution itself is not limited.
While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes in the invention can be made therein without departing from the spirit and scope thereof.
Claims (1)
1. A technology for rolling a sheet billet checkered plate by a common hot-rolled strip steel production line comprises the steps of heating a continuous casting plate blank, rough rolling, finish rolling and coiling, and is characterized in that:
the process of heating the continuous casting slab comprises the following steps: the thickness of the plate blank is 75-90 mm; controlling the temperature of the hearth according to the preheating parameters of 700 ℃, 850 ℃ for the first time, 1140 ℃ for the second time and heating parameters; adding two times 15 minutes before tapping, uniformly heating to 20-30 ℃, and uniformly heating to 1170-1200 ℃; immediately tapping after the sheet bar travels to the door of a tapping furnace, and controlling the furnace time to be 130 +/-10 min;
the rough rolling process comprises the following steps:
the R1 running speed is 3m/s for over rolling, and the steel is not bitten and not thrown;
r2 is rolled for 3 times, and the rolling running speed is controlled as follows:
(1) When R21 is 2 m/s: r22 is 3m/s, R23 is 3.8m/s;
(2) When R21 is 2.5 m/s: r22 is 3.5m/s, R23 is 4.5m/s; or R22 is 3.6m/s and R23 is 4.8m/s;
the temperature drop is controlled within 100 ℃;
the descaling operation in the working procedures of heating the continuous casting plate blank, rough rolling and finish rolling is as follows: descaling 1 group at the back of the furnace, roughing R1 machine front 0 group, roughing R2 using 1 group, and finish rolling descaling using 1 group; the descaling temperature after the furnace is controlled at 1100-1130 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110335865.3A CN112916616B (en) | 2019-09-30 | 2019-09-30 | Process for rolling sheet billet checkered plate by common hot-rolled strip steel production line |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110335865.3A CN112916616B (en) | 2019-09-30 | 2019-09-30 | Process for rolling sheet billet checkered plate by common hot-rolled strip steel production line |
| CN201910939710.3A CN110614273B (en) | 2019-09-30 | 2019-09-30 | Method for rolling checkered plate by thin slab |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910939710.3A Division CN110614273B (en) | 2019-09-30 | 2019-09-30 | Method for rolling checkered plate by thin slab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112916616A CN112916616A (en) | 2021-06-08 |
| CN112916616B true CN112916616B (en) | 2022-11-11 |
Family
ID=68924863
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910939710.3A Active CN110614273B (en) | 2019-09-30 | 2019-09-30 | Method for rolling checkered plate by thin slab |
| CN202110335865.3A Active CN112916616B (en) | 2019-09-30 | 2019-09-30 | Process for rolling sheet billet checkered plate by common hot-rolled strip steel production line |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910939710.3A Active CN110614273B (en) | 2019-09-30 | 2019-09-30 | Method for rolling checkered plate by thin slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN110614273B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113385542A (en) * | 2021-06-21 | 2021-09-14 | 山东盛阳金属科技股份有限公司 | Rolling and pickling process of wide zirconium plate |
| CN116251835A (en) * | 2021-10-30 | 2023-06-13 | 日照钢铁控股集团有限公司 | Method for producing pattern plate with specification of 1.5mm by using sheet billet in common hot rolling production line |
| CN116251834A (en) * | 2021-12-03 | 2023-06-13 | 日照钢铁控股集团有限公司 | Hot rolling process based on wedge-shaped sheet billet |
| CN114289507B (en) * | 2021-12-28 | 2023-11-21 | 本钢板材股份有限公司 | Method for eliminating wave defect of hot rolled checkered plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19823637A1 (en) * | 1998-05-27 | 1999-12-09 | Voith Sulzer Papiertech Patent | Assembly to control the temperature of a moving paper web |
| CN102248372A (en) * | 2011-06-22 | 2011-11-23 | 河南盛荣特种钢业有限公司 | Method for producing single-sided composite stainless steel cold rolling base stock |
| CN103157658A (en) * | 2013-04-12 | 2013-06-19 | 湖南华菱涟源钢铁有限公司 | Process of rolling stainless steel coil in conventional hot continuous rolling production line |
| CN105921515A (en) * | 2016-05-20 | 2016-09-07 | 首钢总公司 | Descaling method for hot-rolled high-strength steel automobile plate |
| CN107096795A (en) * | 2017-05-23 | 2017-08-29 | 宁波钢铁有限公司 | A kind of manufacture method for reducing edge defects of hot rolled strip steel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129015A (en) * | 1997-10-28 | 1999-05-18 | Nippon Steel Corp | Method of producing thin-scale steel sheet |
| CN1307010C (en) * | 2003-12-19 | 2007-03-28 | 宝钢集团上海梅山有限公司 | Hot-rolled patterned steel sheet production method |
| CN100503864C (en) * | 2006-01-06 | 2009-06-24 | 鞍钢股份有限公司 | Method for medium sized or thin plate blank continuous casting and continuous rolling for producing superfine crystal grain steel plate |
| CN103071675A (en) * | 2012-12-20 | 2013-05-01 | 济钢集团有限公司 | Rolling system for medium and thick steel plate in thin gauge |
| CN108971224B (en) * | 2018-09-27 | 2020-11-06 | 武汉钢铁有限公司 | Production method of patterned steel plate |
-
2019
- 2019-09-30 CN CN201910939710.3A patent/CN110614273B/en active Active
- 2019-09-30 CN CN202110335865.3A patent/CN112916616B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19823637A1 (en) * | 1998-05-27 | 1999-12-09 | Voith Sulzer Papiertech Patent | Assembly to control the temperature of a moving paper web |
| CN102248372A (en) * | 2011-06-22 | 2011-11-23 | 河南盛荣特种钢业有限公司 | Method for producing single-sided composite stainless steel cold rolling base stock |
| CN103157658A (en) * | 2013-04-12 | 2013-06-19 | 湖南华菱涟源钢铁有限公司 | Process of rolling stainless steel coil in conventional hot continuous rolling production line |
| CN105921515A (en) * | 2016-05-20 | 2016-09-07 | 首钢总公司 | Descaling method for hot-rolled high-strength steel automobile plate |
| CN107096795A (en) * | 2017-05-23 | 2017-08-29 | 宁波钢铁有限公司 | A kind of manufacture method for reducing edge defects of hot rolled strip steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110614273B (en) | 2021-03-19 |
| CN112916616A (en) | 2021-06-08 |
| CN110614273A (en) | 2019-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112916616B (en) | Process for rolling sheet billet checkered plate by common hot-rolled strip steel production line | |
| CN101209459A (en) | Method for cold rolling high silicon electric steel | |
| EP1637243B1 (en) | Method for manufacturing of stainless steel strips | |
| CN104399745B (en) | A kind of steekle mill production line configuring roughing mill and method of work thereof | |
| CN104962812A (en) | Hot-continuous-rolled axle housing steel with favorable plate shape and manufacturing method thereof | |
| CN111570509B (en) | Titanium strip rolling method for hot continuous rolling strip steel production line | |
| US20220177989A1 (en) | Method for manufacturing of stainless steel strips | |
| CN114247746B (en) | Production process for rolling flat plate by wedge-shaped thin slab on common hot rolling production line | |
| CN104399748B (en) | A kind of production technology that can replace conventional broadband steel hot continuous rolling | |
| CN114433638B (en) | Method for controlling transverse unevenness of hot-rolled steel plate with thickness specification of less than or equal to 50mm | |
| CN113996665B (en) | Production process for rolling extreme thin-specification checkered plate by thin slab | |
| CN114535325B (en) | Plate shape control process for producing pipeline steel based on single-frame steckel mill | |
| JPH05161901A (en) | Manufacture of cold rolled strip metal having good surface gloss | |
| JPH11267755A (en) | Manufacture of thick steel plate and straightening device used in it | |
| RU2268790C1 (en) | Sheet rolling method and apparatus for performing the same | |
| CN112453055B (en) | Method for controlling edge quality of interstitial-free IF steel and IF steel | |
| CN117583408A (en) | Control method for wrinkling of surface of thin-specification ship plate steel | |
| CN107199242A (en) | Heavy section steel rolled steel production system and method | |
| JP4608762B2 (en) | Mold for width press and hot rolling method using the same | |
| JPH03128122A (en) | Accelerated cooling method of thick steel plate | |
| CN116765127A (en) | Semi-headless mode continuous casting and rolling method for sheet billet | |
| CN115502203A (en) | Thin steel plate with 460 MPa-grade yield strength and plate shape control method thereof | |
| CN115572802A (en) | Method for producing low-alloy high-strength steel with plate width of more than or equal to 1800mm | |
| CN115608774A (en) | Method for reducing surface stripes of high-strength hot-rolled pickled strip steel | |
| JPS6213201A (en) | Production of galvanized and embossed steel sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A process for rolling thin slab patterned plates on an ordinary hot-rolled strip production line Effective date of registration: 20231215 Granted publication date: 20221111 Pledgee: Rizhao Bank Co.,Ltd. Pledgor: RIZHAO STEEL HOLDING GROUP Co.,Ltd. Registration number: Y2023980072204 |