CN117463795A - Control method of hot-rolled thin strip line flying shears - Google Patents
Control method of hot-rolled thin strip line flying shears Download PDFInfo
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- CN117463795A CN117463795A CN202311823983.4A CN202311823983A CN117463795A CN 117463795 A CN117463795 A CN 117463795A CN 202311823983 A CN202311823983 A CN 202311823983A CN 117463795 A CN117463795 A CN 117463795A
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- shearing
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010008 shearing Methods 0.000 claims abstract description 75
- 239000002184 metal Substances 0.000 claims abstract description 56
- 229910052751 metal Inorganic materials 0.000 claims abstract description 56
- 238000005520 cutting process Methods 0.000 claims abstract description 34
- 238000005098 hot rolling Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000001133 acceleration Effects 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 9
- 230000009193 crawling Effects 0.000 claims description 7
- 230000033764 rhythmic process Effects 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 101100347655 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) NAB3 gene Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D25/00—Machines or arrangements for shearing stock while the latter is travelling otherwise than in the direction of the cut
- B23D25/02—Flying shearing machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
-
- 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
- B21B15/0007—Cutting or shearing the product
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
Abstract
The invention relates to a control method of a hot rolling thin strip line flying shear, wherein the flying shear is arranged between a roughing mill and a finishing mill, and a first hot metal detector and a second hot metal detector are sequentially arranged in front of the flying shear, and the control method comprises the following steps: recording the time of the intermediate billet head passing through the two hot metal detectors; calculating the actual running speed of the intermediate blank according to the time interval and the distance between the two hot metal detectors; calculating a crop tracking distance using an actual running speedS 0 When (when)S 0 Sending a shearing command when the cutting start distance is greater than or equal to the cutting start distance; controlling the rotation of the shear drum according to the set linear speed and accelerationThe shearing drum is enabled to rotate from the waiting position to sequentially pass through the accelerating position, the shearing position, the braking position and the resetting position, and the second hot metal detector is used for controlling the corresponding shearing drum to reversely rotate until the shearing drum returns to the waiting position after detecting that signals are lost. According to the invention, through fixed shearing time sequence, the shearing of the middle skin with different specifications is more accurate.
Description
Technical Field
The invention belongs to the technical field of automatic control of steel rolling, and relates to a control method of hot-rolled thin strip line flying shears.
Background
Because the order demands are high in the frequency of changing the specifications of many iron and steel enterprises, the frequent specification changing has a great influence on the length of the cutting head of the flying shears. The main reasons are that the degree of skidding of different steel grades, temperatures and blank lengths is different, the speed feedback of the roller way is used for tracking the inaccurate position of the intermediate blank from the flying shears due to the phenomenon that the strip steel slips on the roller way in different degrees, the length of the flying shears is unstable, the speed of the strip steel is measured by the laser range finder, and the equipment cost and the maintenance cost are high. Therefore, a control method of hot rolling thin strip line flying shears is needed to enable the shearing of intermediate slabs with different specifications to be more accurate.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a control method of hot-rolled thin strip line flying shears, which is used for tracking intermediate blanks, judging the shearing time of the flying shears and ensuring that the intermediate blanks with different specifications are sheared more accurately through fixed shearing time sequences.
The invention provides a control method of a hot rolling thin strip line flying shear, wherein the flying shear is arranged between a roughing mill and a finishing mill, and a first hot metal detector and a second hot metal detector are sequentially arranged in front of the flying shear, and the control method comprises the following steps:
step 1: the head part of the intermediate blank sequentially passes through a first hot metal detector and a second hot metal detector, and the time interval detected by the two hot metal detectors is recorded;
step 2: calculating the actual running speed of the intermediate blank according to the time interval and the distance between the two hot metal detectors;
step 3: calculating a crop tracking distance using an actual running speed of the intermediate billetS 0 When (when)S 0 Is greater than or equal to the start distance of the head cuttingS 1 When the flying shears are started, a shearing command is sent to control the flying shears to start;
step 4: when the flying splice reaches the shearing command, the shearing drum is controlled to rotate, and the upper shearing blade is controlled to creep at a linear speedV0 from a waiting position of 300 ° to a 220 ° position; defining the vertical downward direction of the upper cutting edge along the center line of the flying shear as a 0-degree direction, and enabling the upper cutting edge to rotate anticlockwise as an angle increasing direction;
step 5: after the upper cutting edge reaches 220 DEG position, the drum is controlled to accelerateα 1 The upper shearing blade rotates to the position of 190 degrees after uniform acceleration of 30 degrees, the linear speed of the flying shears reaches the maximum shearing line speed, and the maximum shearing line speed is kept to rotate continuously until the upper shearing blade reaches the position of 0 degrees theoretically, and shearing is completed;
step 6: after shearing is completed, the upper shearing blade continuously rotates clockwise, and the upper shearing blade starts to brake when reaching the position of 330 degrees, so as to accelerateα 3 Decelerating, braking by 160 deg. clockwise rotation, and continuously creeping at linear speedV0 rotates by 80 degrees clockwise to reach a 90-degree reset position;
step 7: the second hot metal detector detects signal loss, and calculates the tracking distance of the tail position of the strip steel according to the speed of the finish rolling 1 st frameS 2 Tracking distanceS 2 Greater than the reverse start distanceS 3 When the upper shear blade rotates at a speedV h Turning from 90 to 270 anticlockwise; the upper shear blade continues anticlockwise to accelerateα 2 The ramp down is stopped to a waiting position of 300 deg..
Further, in the step 2, the actual running speed of the intermediate blank is calculated according to the following formula:
；
wherein,Dfor the distance between the first hot metal detector and the second hot metal detector,t 0 for the time interval detected by the two hot metal detectors.
Further, in the step 3, the head cutting tracking distance and the head cutting starting distance are calculated according to the following formula:
S 0 =V1×t 1 ；
S 1 =L 0 -L 1 -L 2 -V1×t 2 ；
wherein,S 0 tracking a distance for the crop, namely a distance between the head of the intermediate billet and the second hot metal detector after the head of the intermediate billet passes through the second hot metal detector;t 1 the time for the intermediate billet head to run after passing through the second hot metal detector;V1 is the actual running speed of the intermediate blank;S 1 starting distance for cutting;L 0 the distance between the second hot metal detector in front of the flying shear and the center line of the flying shear;L 1 the shearing length is set according to the field process requirement;L 2 a first distance compensation value;t 2 shearing the common time from the waiting position to the shearing position; 1000mm<L 0 <5000mm，50mm<L 1 <500mm，-500mm<L 2 <500mm。
Further, the control process of the lower cutting edge in the steps 4 to 6 is the same as that of the upper cutting edge, and the rotation direction is opposite.
Further, in the step 5, the acceleration is calculated according to the following formulaα 1 ：
；
；
Wherein,V 0 for crawling line speedVThe rotational speed corresponding to 0 is set,V 2 at maximum shear line speedV2, deltaP 1 4/9 turns, 1.05<α<1.3, crawling line speedVAnd 0 is less than the roller speed before shearing.
Further, in the step 7, the tracking distance of the tail position of the strip steel is calculated according to the following formulaS 2 And reverse startDistance ofS 3 ：
S 2 =V3×t 3 ；
S 3 =L 0 +L 3 ；
Wherein,V3 is the speed of the finish rolling machine 1,t 3 the time for the tail of the intermediate billet to run after passing through the second hot metal detector;L 0 the distance between the second hot metal detector in front of the flying shear and the center line of the flying shear;L 3 for a second distance compensation value, -1000mm<L 3 <1000mm。
Further, in the step 7, the acceleration is calculated according to the following formulaα 2 ：
；
；
Wherein the rotational speedV h Setting according to the requirement of the spot tapping rhythm; deltaP 2 The rotation rate is 1/12 of the rotation rate,V MAX for maximum speed of the flying shear motor, the linear speed of crawlingVAnd 0 is less than the roller speed before shearing.
According to the control method of the hot rolling thin strip line flying shears, two metal detectors are arranged in front of the flying shears, the actual speed of strip steel is calculated through the distance and the detection time between the two metal detectors, the head cutting tracking distance and the head cutting starting distance are calculated according to the actual speed, the intermediate billet is tracked, the shearing time of the flying shears is judged, and the shearing time sequence is fixed, so that the intermediate billets with different specifications are sheared more accurately.
Drawings
FIG. 1 is a schematic view of a hot rolling mill plant line;
FIG. 2 is a flow chart of a method of controlling a hot rolled thin strip line flying shear of the present invention;
fig. 3 is a timing diagram of the shearing of the upper shearing edge.
Detailed Description
As shown in the following FIG. 1, before the flying shears in the hot rolling unit are installed in the finishing mill, in the hot rolling process, the intermediate billet rolled by rough rolling generally needs to be cut, the accuracy of the flying shears is important, and in order to ensure the accuracy of the flying shears, firstly, the accuracy of the head tracking of the intermediate billet needs to be ensured, and secondly, the time required by each flying shears cutting process according to steps needs to be stable, so that the actual running distance of the intermediate billet on a roller way in each cutting process is ensured to be smaller. The control method of the invention sequentially sets a first hot metal detector HMD1 and a second hot metal detector HMD2 before the flying shears. The actual speed of the strip steel is calculated through the distance between the two metal detectors and the detection time, and the head cutting tracking distance and the head cutting starting distance are calculated according to the actual speed of the strip steel, so that the starting of the flying shears is controlled.
As shown in fig. 2, the invention provides a control method of hot-rolled thin strip line flying shears, which comprises the following steps:
step 1: the head part of the intermediate blank sequentially passes through a first hot metal detector and a second hot metal detector, and the time interval detected by the two hot metal detectors is recorded;
step 2: calculating the actual running speed of the intermediate blank according to the time interval and the distance between the two hot metal detectors;
in specific implementation, the actual running speed of the intermediate blank is calculated according to the following formula:
；
wherein,Dfor the distance between the first hot metal detector and the second hot metal detector,t 0 for the time interval detected by the two hot metal detectors.
Function protection: if the calculated deviation between the actual running speed of the intermediate billet and the roller speed is too high, the difference of the head cutting length is too much to influence the forward-transfer rolling, if the calculated deviation value between the actual speed of the intermediate billet and the actual value of the roller speed before the flying shears exceeds 2%, the problems of heat detection faults and the like are indicated, and the upper computer alarms and is switched to the roller speed before the flying shears to calculate the head tracking.
Step 3: calculating a crop tracking distance using an actual running speed of the intermediate billetS 0 When (when)S 0 Is greater than or equal to the start distance of the head cuttingS 1 When the flying shears are started, a shearing command is sent to control the flying shears to start;
in specific implementation, the crop tracking distance is calculated according to the followingS 0 And a head cutting start distanceS 1 ：
S 0 =V1×t 1 ；
S 1 =L 0 -L 1 -L 2 -V1×t 2 ；
Wherein,S 0 tracking a distance for the crop, namely a distance between the head of the intermediate billet and the second hot metal detector after the head of the intermediate billet passes through the second hot metal detector;t 1 the time for the intermediate billet head to run after passing through the second hot metal detector;V1 is the actual running speed of the intermediate blank;S 1 starting distance for cutting;L 0 the distance between the second hot metal detector in front of the flying shear and the center line of the flying shear;L 1 the shearing length is set according to the field process requirement;L 2 a first distance compensation value;t 2 shearing the common time from the waiting position to the shearing position; 1000mm<L 0 <5000mm，50mm<L 1 <500mm，-500mm<L 2 <500mm。
Step 4: when the flying splice reaches the shearing command, the shearing drum is controlled to rotate, and the upper shearing blade is controlled to creep at a linear speedV0 from a waiting position of 300 ° to a 220 ° position; defining the vertical downward direction of the upper cutting edge along the center line of the flying shear as a 0-degree direction, and enabling the upper cutting edge to rotate anticlockwise as an angle increasing direction;
step 5: after the upper cutting edge reaches 220 DEG position, the drum is controlled to accelerateα 1 The flying shears rotate at uniform acceleration of 30 degrees, the upper shearing blade rotates to the position of 190 degrees, the linear speed of the flying shears reaches the maximum shearing line speed, and the maximum shearing line speed is kept to continueRotating until the theory of the upper shearing blade reaches the 0-degree position to complete shearing;
in practice, the acceleration is calculated according to the following formulaα 1 ：
；
；
Wherein,V 0 for crawling line speedVThe rotational speed corresponding to 0 is set,V 2 at maximum shear line speedV2, deltaP 1 4/9 turns, 1.05<α<1.3, crawling line speedVAnd 0 is less than the roller speed before shearing.
Step 6: after shearing is completed, the upper shearing blade continuously rotates clockwise, and the upper shearing blade starts to brake when reaching the position of 330 degrees, so as to accelerateα 3 Decelerating, braking by 160 deg. clockwise rotation, and continuously creeping at linear speedV0 rotates by 80 degrees clockwise to reach a 90-degree reset position;
；
wherein delta isP 3 1/9 of a revolution.
As shown in FIG. 3, when the flying splice reaches the shearing command, the shearing drum is controlled to rotate, the upper shearing blade rotates from the waiting position of 300 deg. to the accelerating position of 220 deg. after a certain time, and the accelerating speed is used to start the crawling sectionα 1 After a certain time of acceleration, the upper shear blade rotates to a 190-degree position to finish acceleration, then the shearing is finished at a shearing position where the maximum shearing line speed reaches 0-degree, after the shearing is finished, the upper shear blade continues to rotate clockwise to a 330-degree braking position to start braking, and after the braking is finished, the upper shear blade starts to reset and crawl at a 170-degree position until the upper shear blade rotates to a reset position.
In the specific implementation, the control process of the lower cutting edge in the steps 4 to 6 is the same as that of the upper cutting edge, and the rotation directions are opposite.
Step 7: the second hot metal detector detects signal loss, and calculates the tracking distance of the tail position of the strip steel according to the speed of the finish rolling 1 st frameS 2 Tracking distanceS 2 Greater than the reverse start distanceS 3 When the upper shear blade rotates at a speedV h Start to turn counterclockwise from 90 ° to 270 °; the upper shearing edge reaches 270 DEG and starts to continue anticlockwise to accelerateα 2 The ramp down is stopped to a waiting position of 300 deg..
In specific implementation, the tracking distance of the tail position of the strip steel is calculated according to the following formulaS 2 And reverse start distanceS 3 ：
S 2 =V3×t 3 ；
S 3 =L 0 +L 3 ；
Wherein,V3 is the speed of the finish rolling machine 1,t 3 the time for the tail of the intermediate billet to run after passing through the second hot metal detector;L 0 the distance between the second hot metal detector in front of the flying shear and the center line of the flying shear;L 3 for a second distance compensation value, -1000mm<L 3 <1000mm。
In practice, the acceleration is calculated according to the following formulaα 2 ：
；
；
Wherein the rotational speedV h Setting according to the requirement of the spot tapping rhythm; deltaP 2 The rotation rate is 1/12 of the rotation rate,V MAX for maximum speed of the flying shear motor, the linear speed of crawlingVAnd 0 is less than the roller speed before shearing.
The foregoing description of the preferred embodiments of the invention is not intended to limit the scope of the invention, but rather to enable any modification, equivalent replacement, improvement or the like to be made without departing from the spirit and principles of the invention.
Claims (7)
1. The control method of the hot rolling thin strip line flying shear, wherein the flying shear is arranged between a roughing mill and a finishing mill, is characterized in that a first hot metal detector and a second hot metal detector are sequentially arranged in front of the flying shear, and comprises the following steps:
step 1: the head part of the intermediate blank sequentially passes through a first hot metal detector and a second hot metal detector, and the time interval detected by the two hot metal detectors is recorded;
step 2: calculating the actual running speed of the intermediate blank according to the time interval and the distance between the two hot metal detectors;
step 3: calculating a crop tracking distance using an actual running speed of the intermediate billetS 0 When (when)S 0 Is greater than or equal to the start distance of the head cuttingS 1 When the flying shears are started, a shearing command is sent to control the flying shears to start;
step 4: when the flying splice reaches the shearing command, the shearing drum is controlled to rotate, and the upper shearing blade is controlled to creep at a linear speedV0 from a waiting position of 300 ° to a 220 ° position; defining the vertical downward direction of the upper cutting edge along the center line of the flying shear as a 0-degree direction, and enabling the upper cutting edge to rotate anticlockwise as an angle increasing direction;
step 5: after the upper cutting edge reaches 220 DEG position, the drum is controlled to accelerateα 1 The upper shearing blade rotates to the position of 190 degrees after uniform acceleration of 30 degrees, the linear speed of the flying shears reaches the maximum shearing line speed, and the maximum shearing line speed is kept to rotate continuously until the upper shearing blade reaches the position of 0 degrees theoretically, and shearing is completed;
step 6: after shearing is completed, the upper shearing blade continuously rotates clockwise, and the upper shearing blade starts to brake when reaching the position of 330 degrees, so as to accelerateα 3 Decelerating, braking by 160 deg. clockwise rotation, and continuously creeping at linear speedV0 rotates by 80 degrees clockwise to reach a 90-degree reset position;
step 7: the second hot metal detector detects loss of signal according to finish rolling frame 1Calculating the tracking distance of the tail position of the strip steel by speedS 2 Tracking distanceS 2 Greater than the reverse start distanceS 3 When the upper shear blade rotates at a speedV h Turning from 90 to 270 anticlockwise; the upper shear blade continues anticlockwise to accelerateα 2 The ramp down is stopped to a waiting position of 300 deg..
2. The method for controlling hot rolled thin strip line flying shears according to claim 1, wherein in the step 2, the actual running speed of the intermediate blank is calculated according to the following formula:
；
wherein,Dfor the distance between the first hot metal detector and the second hot metal detector,t 0 for the time interval detected by the two hot metal detectors.
3. The method for controlling a hot rolled thin strip line flying shear according to claim 1, wherein in the step 3, the head cutting tracking distance and the head cutting start distance are calculated according to the following formulas:
S 0 = V1×t 1 ；
S 1 =L 0 -L 1 -L 2 -V1×t 2 ；
wherein,S 0 tracking a distance for the crop, namely a distance between the head of the intermediate billet and the second hot metal detector after the head of the intermediate billet passes through the second hot metal detector;t 1 the time for the intermediate billet head to run after passing through the second hot metal detector;V1 is the actual running speed of the intermediate blank;S 1 starting distance for cutting;L 0 the distance between the second hot metal detector in front of the flying shear and the center line of the flying shear;L 1 the shearing length is set according to the field process requirement;L 2 a first distance compensation value;t 2 shearing the common time from the waiting position to the shearing position; 1000mm<L 0 <5000mm，50mm< L 1 <500mm，-500mm< L 2 <500mm。
4. The method for controlling a hot rolled thin strip line flying shear according to claim 1, wherein the control process of the lower shearing blade in the steps 4 to 6 is identical to that of the upper shearing blade, and the rotation directions are opposite.
5. The method for controlling hot rolled thin strip line flying shears according to claim 1, wherein in step 5, the acceleration is calculated according to the following formulaα 1 ：
；
；
Wherein,V 0 for crawling line speedVThe rotational speed corresponding to 0 is set,V 2 at maximum shear line speedV2, deltaP 1 4/9 turns, 1.05<α<1.3, crawling line speedVAnd 0 is less than the roller speed before shearing.
6. The method for controlling hot rolled thin strip line flying shears according to claim 1, wherein in step 7, the tracking distance of the strip tail position is calculated according to the following formulaS 2 And reverse start distanceS 3 ：
S 2 = V3×t 3 ；
S 3 = L 0 +L 3 ；
Wherein,V3 is the speed of the finish rolling machine 1,t 3 the time for the tail of the intermediate billet to run after passing through the second hot metal detector;L 0 the distance between the second hot metal detector in front of the flying shear and the center line of the flying shear;L 3 for a second distance compensation value, -1000mm<L 3 <1000mm。
7. The method for controlling hot rolled thin strip line flying shears according to claim 1, wherein in step 7, the acceleration is calculated according to the following formulaα 2 ：
；
；
Wherein the rotational speedV h Setting according to the requirement of the spot tapping rhythm; deltaP 2 The rotation rate is 1/12 of the rotation rate,V MAX for maximum speed of the flying shear motor, the linear speed of crawlingVAnd 0 is less than the roller speed before shearing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311823983.4A CN117463795A (en) | 2023-12-28 | 2023-12-28 | Control method of hot-rolled thin strip line flying shears |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311823983.4A CN117463795A (en) | 2023-12-28 | 2023-12-28 | Control method of hot-rolled thin strip line flying shears |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10202419A (en) * | 1997-01-14 | 1998-08-04 | Shinko Electric Co Ltd | Cutting accuracy improving method corresponding to shape change of crop shear material |
| KR20040039557A (en) * | 2002-11-02 | 2004-05-12 | 주식회사 포스코 | Device for measuring crop profile and velocity of hot bar by using optical fiber |
| CN204397050U (en) * | 2014-12-01 | 2015-06-17 | 方大特钢科技股份有限公司 | Flying shear crop accuracy control system |
| CN114367549A (en) * | 2022-01-13 | 2022-04-19 | 广东韶钢松山股份有限公司 | Method for detecting speed of rod and wire rolled piece |
-
2023
- 2023-12-28 CN CN202311823983.4A patent/CN117463795A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10202419A (en) * | 1997-01-14 | 1998-08-04 | Shinko Electric Co Ltd | Cutting accuracy improving method corresponding to shape change of crop shear material |
| KR20040039557A (en) * | 2002-11-02 | 2004-05-12 | 주식회사 포스코 | Device for measuring crop profile and velocity of hot bar by using optical fiber |
| CN204397050U (en) * | 2014-12-01 | 2015-06-17 | 方大特钢科技股份有限公司 | Flying shear crop accuracy control system |
| CN114367549A (en) * | 2022-01-13 | 2022-04-19 | 广东韶钢松山股份有限公司 | Method for detecting speed of rod and wire rolled piece |
Non-Patent Citations (3)
| Title |
|---|
| 吴晓宁等: "《鞍钢冷连轧机组飞剪控制系统分析》", 鞍钢技术, no. 2014, 31 August 2014 (2014-08-31), pages 25 - 28 * |
| 贾为征等: "《热轧薄板带钢头部剪切控制的优化设计及应用》", 冶金自动化, vol. 43, no. 5, 30 September 2019 (2019-09-30), pages 60 - 63 * |
| 闵海斌: "《高线飞剪控制系统》", 自动化应用, no. 2014, 25 March 2014 (2014-03-25), pages 48 - 49 * |
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