CN114289525B - Method for detecting and straightening head warpage of hot rolled steel plate - Google Patents
Method for detecting and straightening head warpage of hot rolled steel plate Download PDFInfo
- Publication number
- CN114289525B CN114289525B CN202111551810.2A CN202111551810A CN114289525B CN 114289525 B CN114289525 B CN 114289525B CN 202111551810 A CN202111551810 A CN 202111551810A CN 114289525 B CN114289525 B CN 114289525B
- Authority
- CN
- China
- Prior art keywords
- height
- straightening
- steel plate
- head
- signal
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 128
- 239000010959 steel Substances 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 238000007689 inspection Methods 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims description 19
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000000960 laser cooling Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention discloses a method for detecting and straightening the head warpage of a hot rolled steel plate, which specifically comprises the following steps: s1, setting a laser cold detection device; the laser cold inspection device is provided with a first height h 1 Second height h 2 … … nth height h n The method comprises the steps of carrying out a first treatment on the surface of the A limit height H; s2, moving the steel plate to a cooling bed, and triggering an anti-straightening signal when the head of the steel plate shields the signal of the laser cold detection device; s3, the PLC control system receives the anti-straightening signal of the limit height H to stop straightening the steel plate, and operators manually cut off the warping part of the steel plate exceeding the limit height H; s4, automatically judging the nth height h with the highest execution height by the PLC control system n Is a signal of inverse straightening; s5, straightening the rest part of the steel plate continuously after the hot straightening machine levels the head part of the steel plate. According to the invention, the opening height of the roll gap of the thermal straightener and the running direction of the straightener are controlled in a linkage manner by detecting the reverse straightening signal of the head warpage of the thermal straightening incoming steel plate, and the phenomenon of tilting the head is eliminated through the reverse straightening process of the thermal straightener, so that the steel plate is leveled.
Description
Technical Field
The invention relates to the technical field of steel rolling, in particular to a method for detecting and straightening head warpage of a hot rolled steel plate.
Background
In the existing steel plate rolling production system, the part of the steel plate after the rolling process is subjected to the hot straightening process has the situation that the head of the steel plate is warped, namely the phenomenon of tilting the head. If the treatment cannot be found in time after the 'tilting and buckling' condition occurs, the angle of the cooling water sprayed to the surface of the steel plate can be changed after the ultra-fast cooling process of the steel plate, so that the cooling condition of the head and the tail of the steel plate and the cooling process are changed. Slight warping may affect the performance of the steel sheet, and severe warping may cause the steel sheet to directly strike the body equipment of the cooling system, resulting in damage to the steel rolling cooling equipment.
The existing detection and prevention method is to manually observe and pick out unqualified steel plates, but manual detection lacks a specific quantitative detection means, so that a detection and straightening method for the head warpage of the hot rolled steel plates is urgently needed.
Disclosure of Invention
The invention aims at solving the technical problems of the prior art and provides a method for detecting and straightening the head warpage of a hot rolled steel plate.
In order to solve the technical problems, the invention adopts the following technical scheme:
the method for detecting and straightening the head warpage of the hot rolled steel plate specifically comprises the following steps:
step 1, before a steel plate rolled by a rolling mill enters a cooling bed, a laser cold detection device is needed to pass; the transmitter and the receiver of the laser cold detection device are respectively arranged in the advancing direction of the steel plateBoth sides are positioned at the same height; the laser cold detection device is provided with a plurality of groups of detection heights in the vertical direction, and the detection heights are respectively the first height h from low to high 1 Second height h 2 … … nth height h n Wherein n is a positive integer; the laser cold inspection device is also provided with a group of limit height H, and the limit height H is higher than the nth height H n ；
Step 2, the steel plate moves to a cooling bed through a conveying roller way, when the head of the steel plate warps and shields signal reception between a transmitter and a receiver of the laser cold detection device, an anti-straightening signal can be triggered, and the anti-straightening signal is acquired and transmitted to a PLC control system;
step 3, when the PLC control system receives an anti-straightening signal of the limit height H, the PLC control system automatically stops straightening the steel plate, and a picture alarm prompts an operator to manually cut off a steel plate warping part exceeding the limit height H; after the anti-straightening signal with the limit height H disappears, continuing to straighten;
step 4, when the PLC control system receives the nth height h n N-1 h n-1 … … first height h 1 When the n-th height h with highest execution height is automatically determined n Is a signal of inverse straightening; roll gap lifting h of thermal straightener n After the steel plate moves on the conveying roller way to the direction of the cooling bed until the head of the steel plate enters the hot straightener for a distance of 2-4 meters, the roller of the hot straightener is pressed down to restore the straightening roller gap in normal operation, and the steel plate moves on the conveying roller way to the direction of the rolling mill until the steel plate exits the hot straightener, and the head of the steel plate is reversely straightened and flattened by the hot straightener in the process of moving the steel plate on the conveying roller way to the direction of the rolling mill;
and 5, after the hot straightening machine levels the head of the steel plate, the steel plate continues to execute a normal straightening process, and the rest part of the steel plate is straightened.
As a further preferred aspect of the present invention, if the signal of the laser cold inspection device is not blocked by the warp of the steel plate head, the hot straightener performs a normal straightening process when the PLC control system does not receive the anti-straightening signal, and the straightening direction is the direction of the rolling mill toward the cooling bed; otherwise, if the signal of the laser cold detection device is blocked by the warpage of the steel plate head, the hot straightening machine executes the anti-straightening process when the PLC control system receives the anti-straightening signal, and the straightening direction is the direction of the cooling bed towards the rolling mill.
Further preferably, the limit height H of the steel plate is 350mm at maximum.
As a further preferred embodiment of the present invention, the laser cold-detecting device in step 1 is provided with 3 sets of detection heights, respectively the first heights h 1 Second height h 2 And a third height h 3 The method comprises the steps of carrying out a first treatment on the surface of the First height h 1 80-120 mm, a second height h 2 130-170 mm, a third height h 3 180-220 mm.
As a further preferred aspect of the invention, the first height h 1 100mm, a second height h 2 150mm, a third height h 3 200mm.
As a further preferred aspect of the present invention, the automatic determination logic of the PLC control system is: when the first height h is collected simultaneously 1 Second height h 2 And a third height h 3 Performs a third height h when the signal is anti-straightened 3 The roll gap of the hot straightening machine is raised to 300mm, and the steel plate moves on the conveying roller way towards the direction of the cooling bed until the head of the steel plate enters the hot straightening machine for a distance of 4 meters; when the first height h is collected simultaneously 1 Second height h 2 Is not acquired at the third height h 3 Performs a second height h when the signal is anti-straightened 2 The roll gap of the hot straightening machine is raised to 250mm, and the steel plate moves on the conveying roller way towards the direction of the cooling bed until the head of the steel plate enters the hot straightening machine for 3 meters; when the first height h is acquired 1 Is not acquired at a second height h 2 Third height h 3 Performs a first height h when the signal is anti-straightened 1 The roll gap of the hot straightening machine is raised to 200mm, and the steel plate moves on the conveying roller way towards the direction of the cooling bed until the head of the steel plate enters the hot straightening machine for a distance of 2 meters; at a first height h 1 Second height h 2 And a third height h 3 When none of the anti-straightening signals is acquired, the thermal straightener executes a normal straightening process.
The invention has the following beneficial effects:
1. the invention can realize the automatic monitoring of the warping condition of the steel plate head, replace manual observation to screen unqualified steel plates with the warping of the head, and has accurate monitoring and high reliability.
2. According to the invention, when the height of the warpage of the steel plate head exceeds the limit height H, a PLC control system picture alarms to prompt an operator to manually cut off the warpage part of the steel plate exceeding the limit height H, so that the stable operation of a hot straightening process is ensured; when the height of the warping of the head of the steel plate does not exceed the limit height H, the warping height is judged through the laser cold detection device, the anti-straightening signal is automatically judged and selected and fed back to the PLC control system, the roll gap lifting height of the hot straightening machine and the distance of the head of the steel plate entering the hot straightening machine are adjusted, and the anti-straightening steel plate enables the steel plate to be flat and meets production requirements.
Drawings
FIG. 1 is a schematic view of a detecting and straightening apparatus for a method for detecting and straightening a head warp of a hot rolled steel sheet according to the present invention.
FIG. 2 is a schematic view of a laser cold inspection apparatus for a method for inspecting and straightening head warpage of a hot rolled steel sheet according to the present invention.
The method comprises the following steps: 1. a rolling mill; 2. a conveying roller way; 3. a thermal straightener; 4. a laser cold detection device; 5. and (5) a cooling bed.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present invention. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.
The invention will be described in further detail with reference to the drawings and the detailed description.
The method for detecting and straightening the head warpage of the hot rolled steel plate specifically comprises the following steps:
step 1, the situation that part of the steel plate is warped in the head part before entering the hot straightening process, namely the phenomenon of 'warping and buckling' occurs. If the treatment cannot be found in time after the 'tilting and buckling' condition occurs, the angle of the cooling water sprayed to the surface of the steel plate can be changed after the ultra-fast cooling process of the steel plate, so that the cooling condition of the head and the tail of the steel plate and the cooling process are changed. Slight warping may affect the performance of the steel sheet, and severe warping may cause the steel sheet to directly strike the body equipment of the cooling system, resulting in damage to the steel rolling cooling equipment. As shown in fig. 1, before entering the cooling bed 5, the steel plate rolled by the rolling mill 1 needs to pass through the laser cold inspection device 4, and the laser cold inspection device 4 can realize automatic monitoring of the warping condition of the steel plate head, replace manual observation to screen unqualified steel plates with the warping of the head, and have accurate monitoring and high reliability.
As shown in fig. 2, the transmitters and the receivers of the laser cold detection device 4 are respectively arranged at two sides of the advancing direction of the steel plate and are positioned at the same height; the laser cold inspection device 4 is provided with a plurality of groups of detection heights in the vertical direction, and the detection heights are respectively the first height h from low to high 1 Second height h 2 … … nth height h n Wherein n is a positive integer; the laser cold inspection device 4 is also provided with a group of limit height H, and the limit height H is higher than the nth height H n 。
And 2, moving the steel plate to a cooling bed through a conveying roller way 2, triggering an anti-straightening signal when the head of the steel plate warps and shields signal reception between a transmitter and a receiver of the laser cold detection device 4, and transmitting the anti-straightening signal to a PLC control system through acquisition.
If the signal of the laser cold detection device 4 is not blocked by the warpage of the steel plate head, the hot straightener 3 executes a normal straightening process when the PLC control system does not receive the anti-straightening signal, and the straightening direction is the direction of the rolling mill 1 towards the cooling bed 5; on the contrary, if the signal of the laser cold inspection device 4 is blocked by the warp of the steel plate head, the hot straightener 3 executes the anti-straightening process when the PLC control system receives the anti-straightening signal, and the straightening direction is the direction of the cooling bed 5 towards the rolling mill 1.
Step 3, when the PLC control system receives an anti-straightening signal with the limit height H, the PLC control system automatically stops straightening the steel plate, and a picture alarm prompts an operator to manually cut off a warping part exceeding the limit height H of the steel plate; and after the anti-straightening signal with the limit height H disappears, continuing the straightening work.
Step 4, when the PLC control system receives the nth height h n N-1 h n-1 … … first height h 1 When the inverse straightening signal of (2) is received, the n-th height h with the highest execution height is automatically determined and selected n Is a signal of inverse straightening; lifting h of 3 roll gaps of thermal straightener n And (2) moving the steel plate on the conveying roller way 2 towards the direction of the cooling bed until the head of the steel plate enters the thermal straightener 3 for a distance of 2-4 meters, then pressing down the roller of the thermal straightener 3 to recover the straightening roller gap in normal operation, and moving the steel plate on the conveying roller way 2 towards the direction of the rolling mill 1 until the head of the steel plate exits the thermal straightener 3, wherein the warping of the head of the steel plate is reversely straightened and flattened by the thermal straightener 3.
And 5, after the head of the steel plate is leveled by the hot straightener 3, the steel plate continues to execute a normal straightening process, and the rest part of the steel plate is straightened.
The laser cooling device 4 in the step 1 is provided with 3 groups of detection heights, namely a first height h respectively 1 Second height h 2 And a third height h 3 The method comprises the steps of carrying out a first treatment on the surface of the First height h 1 80-120 mm, a second height h 2 130-170 mm, a third height h 3 180-220 mm.
Further description is provided below in connection with preferred embodiment 1.
In an objective aspect, based on objective limitations of the performance of the equipment of the thermal straightener 3 and the quality of the steel sheet from the incoming material, the position where the steel sheet to be straightened is warped is basically located at the head position of the steel sheet, and the limit height of the warpage is generally 350mm, and the steel sheet with the warpage height exceeding 350mm is a defective steel sheet, and the necessity of straightening is lost, so that the limit height Hmax of the steel sheet is 350mm. On the basis of this, a first height h 1 100mm, a second height h 2 150mm, the firstThree heights h 3 Is 200mm, which is the optimal height setting for the present invention.
When the first height h is collected simultaneously 1 Second height h 2 And a third height h 3 Performs a third height h when the signal is anti-straightened 3 The roll gap of the hot straightening machine 3 is raised to 300mm, and the steel plate moves on the conveying roller way 2 towards the direction of the cooling bed 5 until the head of the steel plate enters the hot straightening machine 3 for a distance of 4 meters; when the first height h is collected simultaneously 1 Second height h 2 Is not acquired at the third height h 3 Performs a second height h when the signal is anti-straightened 2 The roll gap of the hot straightening machine 3 is raised to 250mm, and the steel plate moves on the conveying roller way 2 towards the direction of the cooling bed 5 until the head of the steel plate enters the hot straightening machine 3 for a distance of 3 meters; when the first height h is acquired 1 Is not acquired at a second height h 2 Third height h 3 Performs a first height h when the signal is anti-straightened 1 The roll gap of the hot straightening machine 3 is raised to 200mm, and the steel plate moves on the conveying roller way 2 towards the direction of the cooling bed 5 until the head of the steel plate enters the hot straightening machine 3 for a distance of 2 meters; at a first height h 1 Second height h 2 And a third height h 3 When none of the anti-straightening signals is acquired, the thermal straightener 3 performs a normal straightening process.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the equivalent changes belong to the protection scope of the present invention.
Claims (6)
1. A method for detecting and straightening the warpage of the head of a hot rolled steel plate is characterized by comprising the following steps: the method specifically comprises the following steps:
step 1, a steel plate rolled by a rolling mill (1) passes through a laser cold detection device (4) before entering a cooling bed (5); the transmitters and the receivers of the laser cold detection device (4) are respectively arranged at two sides of the advancing direction of the steel plate and are positioned at the same height; laser cold inspection deviceThe device (4) is provided with a plurality of groups of detection heights in the vertical direction, and the detection heights are respectively the first height h from low to high 1 Second height h 2 … … nth height h n Wherein n is a positive integer; the laser cold inspection device (4) is also provided with a group of limit height H, and the limit height H is higher than the nth height H n ；
Step 2, the steel plate moves to a cooling bed through a conveying roller way (2), when the head of the steel plate warps and shields signal receiving between a transmitter and a receiver of a laser cold detection device (4), an anti-straightening signal can be triggered, and the anti-straightening signal is collected and transmitted to a PLC control system;
step 3, when the PLC control system receives an anti-straightening signal with the limit height H, the PLC control system automatically stops straightening the steel plate, and a picture alarm prompts an operator to manually cut off a warping part exceeding the limit height H of the steel plate; after the anti-straightening signal with the limit height H disappears, continuing to straighten;
step 4, when the PLC control system receives the nth height h n N-1 h n-1 … … first height h 1 When the inverse straightening signal of (2) is received, the n-th height h with the highest execution height is automatically determined and selected n Is a signal of inverse straightening; roll gap lifting h of thermal straightener (3) n After the steel plate moves on the conveying roller way (2) towards the direction of the cooling bed until the steel plate head enters the thermal straightener (3) for a distance of 2-4 meters, the roller of the thermal straightener (3) is pressed down to restore the straightening roller gap when the thermal straightener (3) operates normally, and the steel plate moves on the conveying roller way (2) towards the direction of the rolling mill (1) until the steel plate head exits the thermal straightener (3), and the steel plate head is reversely straightened and flattened by the thermal straightener (3) in the process of the steel plate head exiting the thermal straightener (3);
and 5, after the head of the steel plate is leveled by the hot leveler (3), the steel plate continues to execute a normal straightening process, and the rest part of the steel plate is straightened.
2. The method for detecting and straightening the head warp of the hot rolled steel sheet according to claim 1, wherein: in the step 2, if the signal of the laser cold detection device (4) is not blocked by the warpage of the steel plate head, the hot straightening machine (3) executes a normal straightening process when the PLC control system does not receive the anti-straightening signal, and the straightening direction is the direction of the rolling mill (1) towards the cooling bed (5); otherwise, if the signal of the laser cold checking device (4) is blocked by the warpage of the steel plate head, the hot straightening machine (3) executes a reverse straightening process when the PLC control system receives the reverse straightening signal, and the straightening direction is the direction of the cooling bed (5) towards the rolling mill (1).
3. The method for detecting and straightening the head warp of the hot rolled steel sheet according to claim 1, wherein: the limit height H of the steel plate in the step 1 is 350mm at maximum.
4. The method for detecting and straightening the head warp of the hot rolled steel sheet according to claim 1, wherein: the laser cold detection device (4) in the step 1 is provided with 3 groups of detection heights, namely a first height h 1 Second height h 2 And a third height h 3 The method comprises the steps of carrying out a first treatment on the surface of the First height h 1 80-120 mm, a second height h 2 130-170 mm, a third height h 3 180-220 mm.
5. The method for detecting and straightening head warp of a hot rolled steel sheet according to claim 4, wherein: first height h 1 100mm, a second height h 2 150mm, a third height h 3 200mm.
6. The method for detecting and straightening head warp of a hot rolled steel sheet according to claim 5, wherein: when the first height h is collected simultaneously 1 Second height h 2 And a third height h 3 Performs a third height h when the signal is anti-straightened 3 The roll gap of the hot straightening machine (3) is raised to 300mm, and the steel plate moves on the conveying roller way (2) towards the direction of the cooling bed (5) until the head of the steel plate enters the hot straightening machine (3) for a distance of 4 meters; when the first height h is collected simultaneously 1 Second height h 2 Is not acquired at the third height h 3 Performs a second height h when the signal is anti-straightened 2 Is a reverse straightening letterThe roll gap of the hot straightening machine (3) is raised to 250mm, and the steel plate moves on the conveying roller way (2) towards the direction of the cooling bed (5) until the head of the steel plate enters the hot straightening machine (3) for a distance of 3 meters; when the first height h is acquired 1 Is not acquired at a second height h 2 Third height h 3 Performs a first height h when the signal is anti-straightened 1 The roll gap of the hot straightening machine (3) is raised to 200mm, and the steel plate moves on the conveying roller way (2) towards the direction of the cooling bed (5) until the head of the steel plate enters the hot straightening machine (3) for a distance of 2 meters; at a first height h 1 Second height h 2 And a third height h 3 When none of the anti-straightening signals is acquired, the thermal straightener (3) executes a normal straightening process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551810.2A CN114289525B (en) | 2021-12-17 | 2021-12-17 | Method for detecting and straightening head warpage of hot rolled steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551810.2A CN114289525B (en) | 2021-12-17 | 2021-12-17 | Method for detecting and straightening head warpage of hot rolled steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114289525A CN114289525A (en) | 2022-04-08 |
| CN114289525B true CN114289525B (en) | 2024-03-12 |
Family
ID=80967624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111551810.2A Active CN114289525B (en) | 2021-12-17 | 2021-12-17 | Method for detecting and straightening head warpage of hot rolled steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114289525B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116037654B (en) * | 2023-04-03 | 2023-07-18 | 江苏瑞邦复合材料科技有限公司 | Rolling method and rolling equipment for ultrathin copper-aluminum composite foil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000071003A (en) * | 1998-08-28 | 2000-03-07 | Sumitomo Metal Ind Ltd | Thick steel plate manufacturing method and device |
| CN103537486A (en) * | 2013-10-29 | 2014-01-29 | 首钢总公司 | Control method for buckling deformation of hot rolled open flat |
| CN112024642A (en) * | 2020-08-24 | 2020-12-04 | 江苏省沙钢钢铁研究院有限公司 | Automatic hot straightening method for steel plate |
-
2021
- 2021-12-17 CN CN202111551810.2A patent/CN114289525B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000071003A (en) * | 1998-08-28 | 2000-03-07 | Sumitomo Metal Ind Ltd | Thick steel plate manufacturing method and device |
| CN103537486A (en) * | 2013-10-29 | 2014-01-29 | 首钢总公司 | Control method for buckling deformation of hot rolled open flat |
| CN112024642A (en) * | 2020-08-24 | 2020-12-04 | 江苏省沙钢钢铁研究院有限公司 | Automatic hot straightening method for steel plate |
Non-Patent Citations (1)
| Title |
|---|
| 强力矫直机控制模式分析及应用;岳临萍;;电气应用;20100220(04);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114289525A (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114289525B (en) | Method for detecting and straightening head warpage of hot rolled steel plate | |
| US10759003B2 (en) | Method and system for dynamically following laser cutting with magnetic belt | |
| CN104307892B (en) | The method of band head correction in tandem rolling crossing process | |
| CN112570466B (en) | Control method for solving scratch of high-surface thin-specification strip steel conveying roller way | |
| CN111215453A (en) | Remote control system and method for reversible cold rolling mill | |
| CN102699144A (en) | Method for straightening seriously warped steel plate | |
| US8365566B2 (en) | Device for adjusting the distance of a stripper chisel | |
| CN215199052U (en) | Roll gap pre-judging alarm device suitable for straightening machine | |
| CN111715702B (en) | Strip steel warping and flattening method in rough rolling process | |
| EP1508388A1 (en) | Method and device for cooling steel sheet and method of manufacturing steel sheet | |
| CN106583462B (en) | A kind of planisher Strip Shape Control device and method | |
| CN116395458A (en) | Intelligent deviation correcting system and method based on visual detection | |
| CN111715703A (en) | Strip steel warping and flattening device and method in rough rolling process | |
| CN115367419A (en) | Roller equipment control method, device, equipment and medium | |
| CN208654852U (en) | A kind of copper bar production line by row's line identification production and processing | |
| CN112676355A (en) | Method for detecting deviation of steel strip between cold continuous rolling mill frames | |
| JPS61153236A (en) | Equipment for on-line cooling steel of plate | |
| CN217451482U (en) | Finishing mill group for strip steel | |
| CN112696920A (en) | Freeze dryer feeding and discharging positioning method and system | |
| CN212069937U (en) | Remote control system of reversible cold rolling mill | |
| JPH079023A (en) | Method and device for controlling side spray water | |
| CN219541342U (en) | Detection device for single-side lifting of hot rough rolling plate ingot | |
| CN109702019A (en) | Method for preventing cold rolling and uncoiling difficulty of high-strength steel | |
| JPH06254626A (en) | Continuous steel strip treatment line | |
| CN117324968A (en) | Galvanized sheet roll-in welding production line |
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 |