CN116532474A - Interlocking control method for preventing steel from being held in high-speed area equipment - Google Patents
Interlocking control method for preventing steel from being held in high-speed area equipment Download PDFInfo
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- CN116532474A CN116532474A CN202310547358.5A CN202310547358A CN116532474A CN 116532474 A CN116532474 A CN 116532474A CN 202310547358 A CN202310547358 A CN 202310547358A CN 116532474 A CN116532474 A CN 116532474A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 150
- 239000010959 steel Substances 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims abstract description 137
- 238000010008 shearing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B33/00—Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls for handling cobbles; Overload safety devices
-
- 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
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention discloses a linkage control method for preventing steel from being held in high-speed area equipment, which comprises the steps of measuring the distance between two units, calculating the outlet linear velocity of a last rolling mill of a previous unit according to the outlet linear velocity of a last rolling mill of the previous unit and the extension coefficient of the last rolling mill of the previous unit, calculating the running time from the previous unit to the red steel of the next unit according to the distance between the two units and the outlet linear velocity of the last rolling mill of the previous unit, calculating the red steel holding control time, and comparing the actual running time of the red steel with the red steel holding control time to judge whether steel holding is generated in advance. The invention can break the red steel before the red steel damages the roll collar, and control the steel holding before the equipment is possibly damaged, thereby effectively preventing the damage of the rolling mill group.
Description
Technical Field
The invention relates to a linkage control method, in particular to a linkage control method for preventing steel from being held in high-speed zone equipment, and belongs to the technical field of steel rolling.
Background
The high-speed bar line equipment is advanced, the precision is high, the rolling speed is high, the high-speed area production line is long, and the equipment is more. If the steel is held out, one of the treatments takes a long time, and the equipment is damaged. The automation degree of the high-speed bar production line is high, the accuracy requirement on signals, especially heat detection signals is high, and most of the current signals of the steel holding down are broken or not due to the fact that the fish line of the box body in the unit equipment is broken. When the red steel is separated from the roller way, the fish wire is scalded and broken, and then a breaking shear signal is provided for breaking. The method is a currently commonly adopted suffocating steel accident handling signal. But in practice the signal is not beneficial to the device and the effect of protecting the device is not achieved. The suffocating steel occurs in rolling mill units, and equipment such as roll collars and the like can be burnt and cracked (two roll collars of each rolling mill, one unit usually comprises 2-6 rolling mills), so that great loss is caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a linkage control method for preventing steel from being held in high-speed area equipment, which is used for controlling the steel holding before the equipment is possibly damaged.
In order to solve the technical problems, the invention adopts the following technical scheme:
the interlocking control method for preventing steel from being held in high-speed area equipment is characterized by comprising the following steps of:
s1, measuring the distance S between a last rolling mill of a former unit and a first rolling mill of a latter unit;
s2, obtaining the outlet linear velocity v of the last rolling mill of the last unit n-1 The extension coefficient q of the last rolling mill of the former unit;
s3, passing through the outlet linear velocity v of the last rolling mill of the last unit n-1 The extension coefficient q of the last rolling mill of the previous unit calculates the outlet linear velocity v of the last rolling mill of the previous unit n =V n-1 *q；
S4, passing through the distance S between the last rolling mill of the previous unit and the first rolling mill of the next unit and the outlet linear velocity v of the last rolling mill of the previous unit n Calculating the running time t of red steel from the former unit to the latter unit 0 =S/V n ；
S5, running time t of red steel from the former unit to the latter unit 0 Calculating the control time of the red steel holding steelt 1 =t 0 * p, wherein p is an empirical correction factor;
s6, the steel biting time t of the last rolling mill of the previous unit 2 The later unit head frame rolling mill bites the steel at time t 3 Current time t of red steel operation 4 Red steel actual running time t 5 =t 4 -t 2 ；
S7, comparing the actual running time t of the red steel 5 Control time t with red steel 1 If t is the size of 5 ≥t 1 Judging the steel between the two units, shearing the red steel by the clamping section between the units, if t 5 <t 1 Then the steel is normally used.
Further, in the step S1, the distance S between the last rolling mill of the previous unit and the first rolling mill of the next unit is the transmission distance of the red steel between the last rolling mill of the previous unit and the first rolling mill of the next unit.
Further, in the step S2, the elongation coefficient q of the last rolling mill of the previous unit is directly obtained through a rolling parameter table, or the rolling sectional area S of the last rolling mill of the previous unit is obtained through a rolling sectional area S of the last rolling mill of the previous unit n-1 And the rolling sectional area s of the last rolling mill of the former unit n Calculating the extension coefficient q=s n-1 /s n 。
Further, in the step S5, when the red steel is rolled, the actual running time t of each red steel which does not generate the steel holding from the previous unit to the next unit is recorded 6 = t 3 -t 2 Through the actual running time t of the unburnt steel red steel from the former unit to the latter unit recorded by a plurality of groups 6 And establishing an actual running time data set of the steel red which is not blocked, screening the actual running time data set of the steel red which is not blocked to remove impurities, and determining an experience correction coefficient p according to the data distribution condition of the actual running time data set of the steel red which is not blocked.
Further, in the step S7, the previous unit end mill bites the steel at time t 2 And the time t of biting steel of the next unit head frame rolling mill 3 The time acquisition mode of (a) is as follows: energizing the rolls of the last rolling mill of the previous unit, the current oneWhen the end mill of the unit bites steel, the rollers are conducted, the current suddenly rises, and the moment is recorded as the time t of the last end mill of the unit bites steel 2 When the next head frame rolling mill bites steel, the rollers are conducted, the current suddenly rises, and the moment is recorded as the time t of the next head frame rolling mill bites steel 3 。
Compared with the prior art, the invention has the following advantages and effects: the invention provides a linkage control method for preventing steel from being blocked in high-speed area equipment, which judges whether steel blocking is generated or not by judging the actual running time and theoretical running of red steel between two groups of rolling mill sets, when the steel blocking is generated usually due to the reason that the red steel is warped, the actual running time is longer than the theoretical running time because the red steel is warped, whether the steel blocking is generated or not is sequentially judged, the red steel can be broken before the red steel damages a roll collar, the steel blocking is controlled before the equipment is possibly damaged, and the damage of the rolling mill sets is effectively prevented.
Drawings
Fig. 1 is a flowchart of an embodiment of a method for preventing interlocking control of steel in high-speed zone equipment according to the present invention.
Detailed Description
In order to explain in detail the technical solutions adopted by the present invention to achieve the predetermined technical purposes, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that technical means or technical features in the embodiments of the present invention may be replaced without inventive effort, and the present invention will be described in detail below with reference to the accompanying drawings in combination with the embodiments.
As shown in fig. 1, the interlocking control method for preventing steel from being held in high-speed area equipment of the invention comprises the following steps:
s1, measuring the distance S between the last rolling mill of the former unit and the first rolling mill of the latter unit. The distance S between the last rolling mill of the former unit and the first rolling mill of the latter unit is the transmission distance of red steel between the last rolling mill of the former unit and the first rolling mill of the latter unit.
S2, obtaining the outlet linear velocity v of the last rolling mill of the last unit n-1 The elongation coefficient q of the last rolling mill of the former unit. The extension coefficient q of the last rolling mill of the previous unit is directly obtained through a rolling parameter table or the rolling sectional area s of the last rolling mill of the previous unit n-1 And the rolling sectional area s of the last rolling mill of the former unit n Calculating the extension coefficient q=s n-1 /s n 。
S3, passing through the outlet linear velocity v of the last rolling mill of the last unit n-1 The extension coefficient q of the last rolling mill of the previous unit calculates the outlet linear velocity v of the last rolling mill of the previous unit n =V n-1 *q。
S4, passing through the distance S between the last rolling mill of the previous unit and the first rolling mill of the next unit and the outlet linear velocity v of the last rolling mill of the previous unit n Calculating the running time t of red steel from the former unit to the latter unit 0 =S/V n 。
S5, running time t of red steel from the former unit to the latter unit 0 Calculating the control time t of the red steel holding steel 1 =t 0 * p, where p is an empirical correction factor.
The empirical correction factor p is obtained by: when the red steel is rolled, recording the actual running time t of each red steel which does not generate the steel holding, from the former unit to the latter unit, of the red steel when the red steel is rolled 6 = t 3 -t 2 Through the actual running time t of the unburnt steel red steel from the former unit to the latter unit recorded by a plurality of groups 6 And establishing an actual running time data set of the steel red which is not suppressed, screening and removing impurities from the actual running time data set of the steel red which is not suppressed so as to remove invalid data with obviously overlarge errors, and determining an experience correction coefficient p according to the data distribution condition of the actual running time data set of the steel red which is not suppressed.
S6, the steel biting time t of the last rolling mill of the previous unit 2 The latter unitSteel biting time t of head rolling mill 3 Current time t of red steel operation 4 Red steel actual running time t 5 =t 4 -t 2 。
S7, comparing the actual running time t of the red steel 5 Control time t with red steel 1 If t is the size of 5 ≥t 1 Judging the steel between the two units, shearing the red steel by the clamping section between the units, if t 5 <t 1 Then the steel is normally used.
The last rolling mill of the former unit bites the steel at time t 2 And the time t of biting steel of the next unit head frame rolling mill 3 The time acquisition mode of (a) is as follows: when the last rolling mill bites steel, the rollers are conducted, the current suddenly rises, and the moment is recorded as the time t of the last rolling mill bites steel 2 When the next head frame rolling mill bites steel, the rollers are conducted, the current suddenly rises, and the moment is recorded as the time t of the next head frame rolling mill bites steel 3 。
The invention provides a linkage control method for preventing steel from being blocked in high-speed area equipment, which judges whether steel blocking is generated or not by judging the actual running time and theoretical running of red steel between two groups of rolling mill sets, when the steel blocking is generated usually due to the reason that the red steel is warped, the actual running time is longer than the theoretical running time because the red steel is warped, whether the steel blocking is generated or not is sequentially judged, the red steel can be broken before the red steel damages a roll collar, the steel blocking is controlled before the equipment is possibly damaged, and the damage of the rolling mill sets is effectively prevented.
The invention is further illustrated by the following specific examples.
A linkage control method for preventing steel from being held in high-speed area equipment is used for a process for producing phi 12mmHRB400 straight strip threaded steel, and comprises the following steps:
the distance between the last rolling mill of the former unit and the first rolling mill of the latter unit is measured, and the distance between the outlet of the last rolling mill (namely the last rolling mill) of the preffinish rolling unit 17 and the first rolling mill of the 2p unit (consisting of two rolling mills) of the mel rolling mill is (36.391 m-12.803 m) +12.803/sin65 DEG=48 according to the accurate distance on the process layout. The distance between the end stand of the mel rolling mill 2p unit and the head stand of the mel rolling mill 4p unit is 118.2m.
By means of a rolling parameter table, the red steel movement time of the former unit to the latter unit is calculated, the 17-stand rolling mill outlet speed is 16.22m/s, the mel rolling mill 2p unit outlet speed is 25.4m/s, and considering that the piling effect is large (inter-unit distance is long), the correction coefficient is empirically added, wherein the correction coefficient from the finish rolling mill end 17-stand rolling mill to the mel rolling mill 2p unit is 1.03, the red steel movement time is corrected to 48.7 m/16.22/1.03=2915 ms, the correction coefficient from the mel rolling mill 2p unit to the mel rolling mill 4p unit is 1.07, and the correction of the movement time from the mel rolling mill 2p unit to the mel rolling mill 4p unit is 118.2/25.4/1.07=4349 ms.
Several important signals are that the end frame of the unit bites the steel signal (the current rises suddenly after biting the steel), the end frame of the next unit bites the steel signal (the current rises suddenly after biting the steel), and the clamping and shearing signals are that the main console is forced to break (1 is forced to break, and the time gap for biting the steel exceeds the set time). Actual running time t of red steel between 17 rolling mills of final stand of pre-finishing mill group and 2p rolling mills of Mel rolling mill group 5a Actual running time t of red steel between 2p units of mel rolling mill and 4p units of mel rolling mill 5b 。
When t 5a And when the speed is more than or equal to 2915ms, cutting the clamping section between the end frame 17 frame rolling mill of the pre-finishing mill group and the 2p unit of the Mel rolling mill to break the red steel between the end frame 17 frame rolling mill of the pre-finishing mill group and the 2p unit of the Mel rolling mill. When the signal of the head frame biting of the mel rolling mill 2p unit is collected, the red steel between the end frame 17 rolling mills of the pre-finishing mill unit and the mel rolling mill 2p unit is normally over-steel.
When t 5b And if not less than 4349ms, cutting the clamping section between the mel rolling mill 2p unit and the mel rolling mill 4p unit to break the red steel between the mel rolling mill 2p unit and the mel rolling mill 4p unit. When the signal of the head frame biting of the mel rolling mill 4p unit is collected, the red steel between the mel rolling mill 2p unit and the mel rolling mill 4p unit is normally used.
The present invention is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other embodiments, such as those described above, of making various modifications and equivalents will fall within the spirit and scope of the present invention.
Claims (5)
1. The interlocking control method for preventing steel from being held in high-speed area equipment is characterized by comprising the following steps of:
s1, measuring the distance S between a last rolling mill of a former unit and a first rolling mill of a latter unit;
s2, obtaining the outlet linear velocity v of the last rolling mill of the last unit n-1 The extension coefficient q of the last rolling mill of the former unit;
s3, passing through the outlet linear velocity v of the last rolling mill of the last unit n-1 The extension coefficient q of the last rolling mill of the previous unit calculates the outlet linear velocity v of the last rolling mill of the previous unit n =V n-1 *q；
S4, passing through the distance S between the last rolling mill of the previous unit and the first rolling mill of the next unit and the outlet linear velocity v of the last rolling mill of the previous unit n Calculating the running time t of red steel from the former unit to the latter unit 0 =S/V n ；
S5, running time t of red steel from the former unit to the latter unit 0 Calculating the control time t of the red steel holding steel 1 =t 0 * p, wherein p is an empirical correction factor;
s6, the steel biting time t of the last rolling mill of the previous unit 2 The later unit head frame rolling mill bites the steel at time t 3 Current time t of red steel operation 4 Red steel actual running time t 5 =t 4 -t 2 ；
S7, comparing the actual running time t of the red steel 5 Control time t with red steel 1 If t is the size of 5 ≥t 1 Judging the steel between the two units, shearing the red steel by the clamping section between the units, if t 5 <t 1 Then the steel is normally used.
2. The interlocking control method for preventing steel holding in high-speed area equipment according to claim 1, wherein the method comprises the following steps: in the step S1, the distance S between the last rolling mill of the former unit and the first rolling mill of the latter unit is the transmission distance of red steel between the last rolling mill of the former unit and the first rolling mill of the latter unit.
3. The interlocking control method for preventing steel holding in high-speed area equipment according to claim 1, wherein the method comprises the following steps: in the step S2, the extension coefficient q of the last rolling mill of the previous unit is directly obtained through a rolling parameter table or the rolling sectional area S of the last rolling mill of the previous unit n-1 And the rolling sectional area s of the last rolling mill of the former unit n Calculating the extension coefficient q=s n-1 /s n 。
4. The interlocking control method for preventing steel holding in high-speed area equipment according to claim 1, wherein the method comprises the following steps: in the step S5, the process of obtaining the empirical correction factor p is as follows: when the red steel is rolled, recording the actual running time t of each red steel which does not generate the steel holding, from the former unit to the latter unit, of the red steel when the red steel is rolled 6 = t 3 -t 2 Through the actual running time t of the unburnt steel red steel from the former unit to the latter unit recorded by a plurality of groups 6 And establishing an actual running time data set of the steel red which is not blocked, screening the actual running time data set of the steel red which is not blocked to remove impurities, and determining an experience correction coefficient p according to the data distribution condition of the actual running time data set of the steel red which is not blocked.
5.The interlocking control method for preventing steel holding in high-speed area equipment according to claim 1, wherein the method comprises the following steps: in the step S7, the last rolling mill of the former unit bites the steel at the moment t 2 And the time t of biting steel of the next unit head frame rolling mill 3 The time acquisition mode of (a) is as follows: when the last rolling mill bites steel, the rollers are conducted, the current suddenly rises, and the moment is recorded as the time t of the last rolling mill bites steel 2 When the next head frame rolling mill bites steel, the rollers are conducted, the current suddenly rises, and the moment is recorded as the time t of the next head frame rolling mill bites steel 3 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310547358.5A CN116532474A (en) | 2023-05-16 | 2023-05-16 | Interlocking control method for preventing steel from being held in high-speed area equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310547358.5A CN116532474A (en) | 2023-05-16 | 2023-05-16 | Interlocking control method for preventing steel from being held in high-speed area equipment |
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| Publication Number | Publication Date |
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| CN116532474A true CN116532474A (en) | 2023-08-04 |
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| CN202310547358.5A Pending CN116532474A (en) | 2023-05-16 | 2023-05-16 | Interlocking control method for preventing steel from being held in high-speed area equipment |
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- 2023-05-16 CN CN202310547358.5A patent/CN116532474A/en active Pending
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