CN106269889A - The control method that a kind of finishing mill outlet " camber " plate shape adjusts - Google Patents
The control method that a kind of finishing mill outlet " camber " plate shape adjusts Download PDFInfo
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- CN106269889A CN106269889A CN201510287504.0A CN201510287504A CN106269889A CN 106269889 A CN106269889 A CN 106269889A CN 201510287504 A CN201510287504 A CN 201510287504A CN 106269889 A CN106269889 A CN 106269889A
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Abstract
The control method that a kind of finishing mill outlet " camber " plate shape adjusts, control to plate shape during belt steel rolling, it is characterized in that, step 1, use by thermometal flatness detection system, the control system device of finishing mill hydraulic control system composition, the template of strip steel 1 out after being rolled by finish rolling end frame (F7 frame) 2 is carried out " camber " detection, step 2, strip steel 1 is sent into coiling machine 5 batch, strip shape is scanned by the sensor 41 of thermometal flatness detection system, step 3, by optical cable 42 type by the process computer 43 of incoming for information thermometal flatness detection system.Compared with former technology, the control method that one finishing mill outlet " camber " plate shape of the present invention adjusts, it is ensured that finishing mill outlet belt plate shape is good, have and adjust timely, the accurate advantage in direction, improve labor efficiency, improve product quality.
Description
Technical field
The present invention relates to rack of finishing mill exit plate shape and adjust control method, in particular it relates to " camber " plate shape of a kind of rack of finishing mill outlet adjusts control method.Described " camber " plate shape adjusts control method can detect the plate shape centerline deviation of finish rolling outlet in real time, and timely automated adjustment is corrected, to improve finish rolling outlet " camber " flatness defect.
Background technology
Hot fine rolling frame is the made-up belt shut out by roughing mill, rolls into any surface finish, size specification, and performance meets, the finished strip that plate shape is good.In finish rolling production process, made-up belt crop to be carried out, back-end crop, the equipment such as this is to ensure that threading and throws the stability that steel is rolling, be additionally provided with dephosphorization system simultaneously in frame, guide and guards, looper, roll cooling water collector, dust arrester.
Strip steel finished product strip shape quality controls to relate to computer to the setting of each rolling parameter and adjustment, and the control after the presetting operations such as the roll gap before strip steel head threading, mill speed, flipper guide opening degree, loop tension and looper height and strip steel head threading can be divided into operate.Strip shape quality directly affects user and uses, and deformed steel strip can cause processing, and arranges the problems such as damage subscriber equipment, directly results in user's complaint and objection.Therefore Strip Shape Control is most important.
Hot-strip " camber " plate shape is the big factors affecting strip shape quality, is also a kind of common flatness defect.
Plate shape is the abbreviation of Strip glacing flatness.Under conditions of incoming profile is good, it is decided by that percentage elongation is the most equal, i.e. compression ratio is the most identical, and such as Strip percentage elongation in the width direction, i.e. its compression ratio extends big than another side, then produce " camber ".
The mechanism that in strip shape quality, " camber " flatness defect produces
In the finish rolling stage, the effect that now rolled piece has just been held is not enough to overcome the frictional resistance hindering metal transverse shifting, that is for the self-compensating poor ability of chrominance signal deformation, and also owing to thickness is less, even the fine difference of absolute draft amount is likely to cause the notable uneven of specific elongation rate, thus plate deformation can be caused bad, strip thickness is the least, the biggest to the sensitivity of inhomogeneous deformation.Therefore in order to ensure good plate shape, just must be by the principle of homogeneous deformation so that it is transverse section each point percentage elongation or compression ratio are of substantially equal.
" camber " extends mainly due to strip steel both sides and inconsistent causes, and this both can affect the quality of product, also can cause time serious roll brokenly, the production accident such as steel scrap.
Currently for the control of " camber " flatness defect in strip shape quality, it is all that operator are carried out according to direction and the order of severity of " camber ", carries out manually adjusting of single chassis level pressure the most again, to reach good effective plate shape adjustment.
Such as, when strip steel from finishing mill out, it is necessary to concrete direction and the order of severity of " camber " that go out according to eye observation judge, carry out the adjustment of finish rolling end rack level pressure the most again.When rolling heavy gauge steel strip, finished strip thickness is thicker, and slight " camber " is difficult to observe；During finished strip thinner thickness, mill speed is very fast, will also result in the flatness defect of certain distance when observing " camber " and being adjusted, therefore, above-mentioned both of which is easily missed the plate shape of the very first time and is adjusted, and brings certain difficulty to the production of lower operation.
Summary of the invention
For overcoming described problem, the present invention provides the control method that a kind of finishing mill outlet " camber " plate shape adjusts, the control method that described finish rolling end frame " camber " plate shape adjusts is by the real-time detection of finish rolling outlet Straightness Meter, real time data is provided, automatically the roll gap of finish rolling end frame is carried out leveling, straight to ensure the plate shape of finishing mill outlet strip steel.
The control method technical scheme that a kind of finishing mill outlet " camber " the plate shape of the present invention adjusts is as follows:
The control method that a kind of finishing mill outlet " camber " plate shape adjusts, it is characterised in that
Step 1, uses the control system device that is made up of thermometal flatness detection system, finishing mill hydraulic control system, finish rolling end frame (F7 frame) 2 template of strip steel 1 out after rolling is carried out " camber " detection,
Step 2, sends strip steel 1 into coiling machine 5 and batches, and strip shape is scanned by the sensor 41 of thermometal flatness detection system,
Step 3, by optical cable 42 type by the process computer 43 of incoming for information thermometal flatness detection system,
Step 4, template information is uploaded to finish rolling basic automatization computer 21 by TCP/IP communication 44 by the process computer 43 of thermometal flatness detection system,
Step 5, finish rolling basic automatization computer 21 section of sentencing finds camber defect, plate shape disalignment detected the most in real time, controls AGC servo valve 23 action by digital output board 22 and adjusts AGC oil cylinder 24, and then regulation F7 frame roll gap.
With reference to Fig. 1, after strip steel 1 is rolled by finish rolling F7 frame 2, roller-way 3 it is delivered to thermometal flatness detection system 4, after its template is detected, roller-way sends into coiling machine 5 and batch.Strip shape is scanned by the sensor 41 of thermometal flatness detection system, and by the process computer 43 of optical cable 42 type information incoming thermometal flatness detection system.Template information is uploaded to finish rolling basic automatization computer 21 by TCP/IP communication 44 by the process computer 43 of thermometal flatness detection system.Finish rolling basic automatization computer 21 section of sentencing finds camber defect, plate shape disalignment detected the most in real time, controls AGC servo valve 23 action by digital output board 22 and adjusts AGC oil cylinder 24, and then regulation F7 frame roll gap.
The control method adjusted according to a kind of finishing mill outlet " camber " plate shape of the present invention, it is characterised in that
In step 2, benchmark centered by rolling centerline, detects the actual strip steel head distance from centrage.The detection range of Straightness Meter is+1000mm～-1000mm, is a grade by 200mm, is divided into 10 grades.
The control method adjusted according to a kind of finishing mill outlet " camber " plate shape of the present invention, it is characterised in that
In step 5, finishing stand is regulated the roller gap of milling train both sides, the response time of hydraulic cylinder :≤45ms respectively by two hydraulic cylinders；Setting speed: 3mm/s (at point of symmetry), this system can regulate roller gap within the extremely short time accurately.
That is, according to the present invention, technical essential is as follows:
This system is mainly used in after strip steel head goes out finish rolling end frame, the actual plate shape of detection strip steel head, and benchmark centered by rolling centerline detects the actual strip steel head distance from centrage.The detection range of Straightness Meter is+1000mm～-1000mm, is a grade by 200mm, is divided into 10 grades.
By the adjustment of both sides roll gap deviation, regulate strip steel both sides elongation percentage, and then play the purpose of regulation camber.Meanwhile, rule of thumb, the centerline deviation caused according to different cambers, a certain amount of roll gap deviation of corresponding regulation.
The present invention specifically sets and rights protection scope such as Tables 1 and 2.
Table 1
Table 2
Compared with former technology, the control method that one finishing mill outlet " camber " plate shape of the present invention adjusts, by the actual measurement to finish rolling outlet " camber " plate shape of the thermometal Flatness Tester, control the stroke of frame both sides, finish rolling end hydraulic cylinder, thus regulating the roller gap of milling train both sides, it is ensured that finishing mill outlet belt plate shape is good, has and adjusts timely, the accurate advantage in direction, improve labor efficiency, improve product quality.
Accompanying drawing explanation
Fig. 1 is assembly of the invention configuration schematic diagram.
Fig. 2 is the control flow chart of the present invention..
In figure, 1 is strip steel, and 2 is finish rolling F7 frame, and 3 is roller-way, 4 is thermometal flatness detection system, and 41 is sensor, and 42 is optical cable, 43 for process computer 44 be TCP/IP communication, 21 is finish rolling basic automatization computer, and 22 is digital output board, and 23 is AGC servo valve, and 24 is AGC oil cylinder.
Detailed description of the invention
Embodiment
The present invention is the most automatically to adjust finishing mill roll gap according to rack of finishing mill outlet strip steel centerline deviation, and then improves the control technology of " camber ".
The control method that a kind of finishing mill outlet " camber " plate shape adjusts, comprises the following steps that,
Step 1, uses the control system device that is made up of thermometal flatness detection system, finishing mill hydraulic control system, finish rolling end frame (F7 frame) 2 template of strip steel 1 out after rolling is carried out " camber " detection,
Step 2, sends strip steel 1 into coiling machine 5 and batches, and strip shape is scanned by the sensor 41 of thermometal flatness detection system,
Step 3, by optical cable 42 type by the process computer 43 of incoming for information thermometal flatness detection system,
Step 4, template information is uploaded to finish rolling basic automatization computer 21 by TCP/IP communication 44 by the process computer 43 of thermometal flatness detection system,
Step 5, finish rolling basic automatization computer 21 section of sentencing finds camber defect, plate shape disalignment detected the most in real time, controls AGC servo valve 23 action by digital output board 22 and adjusts AGC oil cylinder 24, and then regulation F7 frame roll gap.
With reference to Fig. 1, after strip steel 1 is rolled by finish rolling F7 frame 2, roller-way 3 it is delivered to thermometal flatness detection system 4, after its template is detected, roller-way sends into coiling machine 5 and batch.Strip shape is scanned by the sensor 41 of thermometal flatness detection system, and by the process computer 43 of optical cable 42 type information incoming thermometal flatness detection system.Template information is uploaded to finish rolling basic automatization computer 21 by TCP/IP communication 44 by the process computer 43 of thermometal flatness detection system.Finish rolling basic automatization computer 21 section of sentencing finds camber defect, plate shape disalignment detected the most in real time, controls AGC servo valve 23 action by digital output board 22 and adjusts AGC oil cylinder 24, and then regulation F7 frame roll gap.
It addition, in step 2, benchmark centered by rolling centerline, detects the actual strip steel head distance from centrage.The detection range of Straightness Meter is+1000mm～-1000mm, is a grade by 200mm, is divided into 10 grades.
In step 5, finishing stand is regulated the roller gap of milling train both sides, the response time of hydraulic cylinder :≤45ms respectively by two hydraulic cylinders；Setting speed: 3mm/s (at point of symmetry), this system can regulate roller gap within the extremely short time accurately.
It is embodied as parameter as follows:
Compared with former technology, the control method that one finishing mill outlet " camber " plate shape of the present invention adjusts, by the actual measurement to finish rolling outlet " camber " plate shape of the thermometal Flatness Tester, control the stroke of frame both sides, finish rolling end hydraulic cylinder, thus regulating the roller gap of milling train both sides, it is ensured that finishing mill outlet belt plate shape is good, has and adjusts timely, the accurate advantage in direction, improve labor efficiency, improve product quality.
Claims (3)
1. the control method that finishing mill outlet " camber " plate shape adjusts, control to plate shape during belt steel rolling, it is characterised in that
Step 1, uses the control system device that is made up of thermometal flatness detection system, finishing mill hydraulic control system, finish rolling end frame (F7 frame) 2 template of strip steel 1 out after rolling is carried out " camber " detection,
Step 2, sends strip steel 1 into coiling machine 5 and batches, and strip shape is scanned by the sensor 41 of thermometal flatness detection system,
Step 3, by optical cable 42 type by the process computer 43 of incoming for information thermometal flatness detection system,
Step 4, template information is uploaded to finish rolling basic automatization computer 21 by TCP/IP communication 44 by the process computer 43 of thermometal flatness detection system,
Step 5, finish rolling basic automatization computer 21 section of sentencing finds camber defect, plate shape disalignment detected the most in real time, controls AGC servo valve 23 action by digital output board 22 and adjusts AGC oil cylinder 24, and then regulation F7 frame roll gap.
The control method that the most according to claim 1, a kind of finishing mill outlet " camber " plate shape adjusts, it is characterised in that
In step 2, benchmark centered by rolling centerline, detects the actual strip steel head distance from centrage.The detection range of Straightness Meter is+1000mm～-1000mm, is a grade by 200mm, is divided into 10 grades.
The control method that the most according to claim 1, a kind of finishing mill outlet " camber " plate shape adjusts, it is characterised in that
In step 5, finishing stand is regulated the roller gap of milling train both sides, the response time of hydraulic cylinder :≤45ms respectively by two hydraulic cylinders；Setting speed: 3mm/s (at point of symmetry), this system can regulate roller gap within the extremely short time accurately.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262531A (en) * | 2017-07-19 | 2017-10-20 | 安徽工程大学 | A kind of roll waves the method that setting eliminates Medium and Heavy Plate Rolling camber that tilts |
| CN110802116A (en) * | 2019-11-15 | 2020-02-18 | 常熟科弘材料科技有限公司 | Method for adjusting wave edge defects of material collecting rack of galvanized strip steel production line |
| CN111940542A (en) * | 2020-07-10 | 2020-11-17 | 首钢京唐钢铁联合有限责任公司 | Method and device for coiling strip steel |
| CN112958634A (en) * | 2021-01-28 | 2021-06-15 | 北京科技大学设计研究院有限公司 | Pre-leveling method of finish rolling machine frame based on sickle elbow part |
| CN114798767A (en) * | 2022-04-20 | 2022-07-29 | 山东鑫泰新材料科技有限公司 | Device for detecting camber of hot-rolled coil and using method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107262531A (en) * | 2017-07-19 | 2017-10-20 | 安徽工程大学 | A kind of roll waves the method that setting eliminates Medium and Heavy Plate Rolling camber that tilts |
| CN110802116A (en) * | 2019-11-15 | 2020-02-18 | 常熟科弘材料科技有限公司 | Method for adjusting wave edge defects of material collecting rack of galvanized strip steel production line |
| CN110802116B (en) * | 2019-11-15 | 2021-06-01 | 常熟科弘材料科技有限公司 | Method for adjusting wave edge defects of material collecting rack of galvanized strip steel production line |
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| CN112958634A (en) * | 2021-01-28 | 2021-06-15 | 北京科技大学设计研究院有限公司 | Pre-leveling method of finish rolling machine frame based on sickle elbow part |
| CN114798767A (en) * | 2022-04-20 | 2022-07-29 | 山东鑫泰新材料科技有限公司 | Device for detecting camber of hot-rolled coil and using method thereof |
| CN114798767B (en) * | 2022-04-20 | 2023-06-20 | 山东鑫泰新材料科技有限公司 | Device for detecting camber of hot rolled coil and application method thereof |
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Application publication date: 20170104 |