CN101229566A - Continuous rolling mill entrance region tight rolls system and control method thereof - Google Patents
Continuous rolling mill entrance region tight rolls system and control method thereof Download PDFInfo
- Publication number
- CN101229566A CN101229566A CNA2007100366978A CN200710036697A CN101229566A CN 101229566 A CN101229566 A CN 101229566A CN A2007100366978 A CNA2007100366978 A CN A2007100366978A CN 200710036697 A CN200710036697 A CN 200710036697A CN 101229566 A CN101229566 A CN 101229566A
- Authority
- CN
- China
- Prior art keywords
- pressure roller
- transmission
- control
- rolling mill
- continuous rolling
- 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.)
- Granted
Links
Images
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The invention discloses a tension roll group system at entrance of a continuous rolling mill and a control method thereof. The tension roll group system consist of a tension roll, a press roll and an auto control system used for controlling the tension roll group system at the entrance of the continuous rolling mill. The press roll is connected with a power device. The invention changes the press roll of the tension roll into belt drive control and controls the tension roll system through the control method which is to adjust speed and torque of the press roll according to the speed, loop tension and the working status of the equipment at the entrance of a continuous rolling mill, prevent strip from sliding at the tension roll group and protect the surface quality of the strip and the surface of the tension roll, thereby reducing scratching of the strip tail.
Description
Technical field
The present invention relates to a kind of tandem mill group system and control method thereof that kink is arranged, relate in particular to a kind of continuous rolling mill entrance region tight rolls system and control method thereof.
Background technology
Cold rolling 2030 C102 units are continuous-rolling system, and entrance is two uncoiling systems, arrives welding machine through common segment, after welding is finished, by the temporary transient file steel of kink, are the milling train feed.In the uncoiler zone, mainly produce household electrical appliances steel plates such as automobile board, refrigerator plate, to the band steel quality requirement than higher.But over the years, it is about 1.2% that the wiping of band steel entrance scratches the percentage that accounts for the total band of production steel, is divided into and takes the lead to wipe scuffing two parts with magnetic tape trailer, bigger to quality and lumber recovery influence.By check the entrance magnetic tape trailer before 1# idler roller group strip surface quality and the strip surface quality after the 1# idler roller group, find that therefrom the zone that magnetic tape trailer wipe to scratch produces mainly is in 1# idler roller group, on coil of strip, show as in the process that the pressure roller of magnetic tape trailer and idler roller group presses and open.
By gathering the speed data and the current data of idler roller group, utilize PDA to analyze after, find that the band steel on idler roller surface has slight sliding phenomenon in entrance whipping process.After welding was finished, when the idler roller band-type brake was opened during starting, because the effect of kink tension force, the band steel on idler roller surface slided apparent in view.Check that discovery roll surface in idler roller surface also has cut in various degree, finds that simultaneously belt steel surface also has the scuffing of wiping.
Summary of the invention
The objective of the invention is to be provided with a kind of idler roller group system and new type of control method thereof, can reduce the coil of strip magnetic tape trailer and wipe scuffing, improve the quality of products and lumber recovery.
The present invention realizes that the technical scheme of above-mentioned purpose is: a kind of continuous rolling mill entrance region tight rolls system, described idler roller group comprises idler roller and pressure roller thereof, and an automatic control system that is used to control described milling train entrance region tight rolls system, described pressure roller connects a power-equipment.
The present invention is that the pressure roller with idler roller changes band transmission control into; and by novel control mode control pressure roller; state according to speed, kink tension force and the work of tandem mill entrance equipment; adjust the speed and the torque of pressure roller; avoid with the sliding phenomenon of steel on the idler roller group; scuffing is wiped thereby reduce magnetic tape trailer in protection strip surface quality and idler roller surface.The present invention provides torque by adopting power-equipment for pressure roller, and by PROFIBUS DP network power-equipment is linked control system, is used for controlling the moment of pressure roller power-equipment and speed etc.
Described power-equipment is an electro-motor.Provide torque with electro-motor for pressure roller.
Described electro-motor connects an encoder.Test the speed with encoder.
The present invention also provides the control method of this idler roller group system, may further comprise the steps:
A) pressure roller is in open mode, when the entrance linear velocity during less than the specified permissible velocity of platen motor the pressure roller transmission discharge, adopt software feature control;
B) press pressure roller after accelerating to the speed of idler roller group, and adopt the speed ramp of idler roller group;
C) after pressure roller pressed end, the transmission of pressure roller switched to torque control by software feature control;
D) the entrance whipping is finished, and the pressure roller transmission discharges closes, and torque control finishes;
E) entrance begins to dash cover, and the pressure roller transmission discharges opens, and torque control is taked in the transmission of pressure roller;
F) after the pressure roller transmission discharges and opens a period of time, discharge idler roller group and other transmission;
G) transmission with pressure roller switches to software feature control by torque control, and the rotating speed of platen motor was less than its specified permission rotating speed when the condition of switching was opened pressure roller for assurance;
H) open pressure roller;
I) pressure roller is opened fully, and the pressure roller transmission discharges closes, and software feature control finishes.
Above control method is broadly divided into 4 parts: the transmission control when 1) pressure roller presses; 2) the transmission control after pressure roller presses; Pressure roller transmission control when 3) entrance starts; Transmission control when 4) pressure roller is opened.The concrete control method of idler roller group of the present invention is as follows:
Transmission control when 1) pressure roller presses: according to process condition, the speed ramp of idler roller group is all used MRG1.Because pressure roller roller footpath is less, input can make pressure roller overrun and cause fault when speed is excessive, according to the rated speed of pressure roller transmission nameplate sign, by gear than and the relation in idler roller roller footpath, the condition that the maximal rate that allows according to motor is devoted oneself to work as pressure roller.Therefore, when speed that the entrance linear velocity allows less than platen motor, pressure roller is put into MRG1, according to the inverse signal of automaton discharge rectifier in the transmission or DC-to-AC converter just can signal INV__EN, automaton adopts programmable controller TDC herein.
At this moment, DROOP control is taked in the transmission of pressure roller, and software feature control just is when guaranteeing the band steel of pressure roller on pressing against idler roller, can not produce bigger torque shock ends and causes to wipe and scratch.2) the transmission control after pressure roller presses: because the entry loop tension force of tandem mill is bigger, after pressing, pressure roller must prevent with the skidding between steel and the idler roller, the data of connecting rod ability to bear between pressure roller that provides according to machinery side and electro-motor decide the moment amplitude limit of pressure roller electro-motor.After pressure roller pressed end, the control mode of pressure roller was converted to torque control by DROOP control.3) control of entrance when starting pressure roller transmission: at first the transmission of pressure roller is discharged and take torque control, discharge idler roller group and other transmissions behind the certain hour again, the purpose of doing like this is to be with the sliding phenomenon of steel on idler roller group surface when avoiding the idler roller band-type brake to open.Transmission when 4) pressure roller is opened control: after the entrance starting, the pressure roller transmission switches to DROOP control by torque control, when having guaranteed low speed between band steel and the idler roller synchronously, and pressure roller and the asynchrony phenomenon of being with between the steel when avoiding pressure roller to open.When switching to DROOP control by torque control, the duty of motor need be through just being stabilized under the DROOP control mode after a while, therefore, when the speed of entrance idler roller when wearing scope of tape speed, transmission can be switched to DROOP control by torque control.
As preferred value of the present invention, step c) is that pressure roller presses instruction and carries out back 1.5-3 second described switching time; Discharge back 1-2 second for the pressure roller transmission release time of the described idler roller group of step f) and other transmission; Entrance speed can guarantee when pressure roller is opened greater than wearing 150% of tape speed when switching in the step g), and motor operations is under the DROOP mode and be no more than its rated speed.
The present invention makes it compared with prior art owing to adopted above technical scheme, has following advantage and good effect:
Avoided the sliding phenomenon of band steel on the idler roller group, scuffing is wiped thereby reduce magnetic tape trailer in protection strip surface quality and idler roller surface, has improved lumber recovery.
Description of drawings
Fig. 1 is a continuous rolling mill entrance region tight rolls system artwork of the present invention.
Fig. 2 connects the schematic diagram of power-equipment for continuous rolling mill entrance region tight rolls system pressure roller of the present invention.
Fig. 3 is pressure roller transmission control sequential chart of the present invention.
The specific embodiment
By Fig. 1 and Fig. 2 as can be known, idler roller group system of the present invention comprises: welding machine 1,1 # pressure roller 2,1 # idler roller 3,, 2 # idler roller 4,2 # pressure roller 5,3 # idler roller 6,, 4 # idler roller 7,1# control roll 8, and electro-motor 10, connecting rod 9, encoder 11.
Electro-motor 10 is connected to pressure roller 2 and pressure roller 5 by connecting rod 9, and for pressure roller 2 and pressure roller 5 provide torque, electro-motor 10 also connects an encoder 11.It is power-equipment that the present invention adopts electro-motor, can certainly adopt other power-equipment, and by PROFIBUS DP network power-equipment is linked control system, is used for controlling the moment of pressure roller power-equipment and speed etc.According to the state of speed, kink tension force and the work of tandem mill entrance equipment, adjust the speed and the torque of pressure roller, to avoid with the sliding phenomenon of steel on the idler roller group, scuffing is wiped thereby reduce magnetic tape trailer in protection strip surface quality and idler roller surface.
Fig. 3 is pressure roller transmission control sequential chart of the present invention, vertically indicate among the figure and comprise: idler roller group MRG1 rate curve 1, the specified permissible velocity value 2 of platen motor, barrel velocity accelerates to the velocity amplitude 3 when identical with MRG1 speed, and MRG1 speed is 0 datum line 4, and the pressure roller transmission releases order 5, software feature control 6, torque control 7, pressure roller presses instruction 8, pressure roller OPEN 9;
Laterally indicate and comprise: platen motor accelerates to specified permissible velocity point 10, pressure roller accelerates to and MRG1 speed identical point 11, press and finish the back by putting 12 the switching time that software feature control switches to torque control, the entrance whipping finishes a little 13, entrance begins to dash cover point 14, idler roller group and other transmission release time 15,150% wears tape speed point 16, pressure roller opening speed point 17, the pressure roller sensor receives complete opening signal point 18,150% wears tape speed value 19, the velocity amplitude 20 after the soft control mode of pressure roller is stable;
As shown in Figure 3, the control method of idler roller group system of the present invention comprises:
A) at first pressure roller is in open mode, and the pressure roller transmission is released order and 5 opened when the entrance linear velocity is worth 2 less than the specified permissible velocity of platen motor, and software feature control simultaneously 6 is opened, and this moment, platen motor speed did not reach specified permissible velocity point 10.Because pressure roller roller footpath is less, input can make pressure roller overrun and cause fault when speed is excessive.According to the calibration value of pressure roller transmission, by gear than and the relation in idler roller roller footpath, the condition that the maximal rate that allows according to motor is devoted oneself to work as pressure roller.Therefore, when the entrance linear velocity is worth 2 less than the specified permissible velocity of platen motor, pressure roller is put into MRG1, the signal that returns according to TDC discharges transmission INV_EN.At this moment, DROOP (software feature) control 6 is taked in the transmission of pressure roller, is when guaranteeing the band steel of pressure roller on pressing against idler roller, can not produce bigger torque shock ends and causes to wipe and scratch.
B) pressure roller accelerates to the starting point identical with the speed of idler roller group 11 back startups and presses pressure roller instruction 8, and adopts the speed ramp 1 of idler roller group.
C) after pressure roller pressed end, the transmission of pressure roller switched to torque control 7 by software feature control 6.Put 12 described switching time for pressure roller presses instruction execution back 1.5-3 second, present embodiment adopted 2.5 seconds.Because the entry loop tension force of tandem mill is bigger, after pressing, pressure roller must prevent that with the skidding between steel and the idler roller data of connecting rod ability to bear between pressure roller that provides according to machinery side and electro-motor decide the moment amplitude limit of pressure roller electro-motor.After pressure roller pressed end, the control mode of pressure roller was converted to torque control 7 by DROOP control 6, maintained the full speed additional amount delta_V effect of closing state and increasing in order to make speed ring, was generally-10% of MRG1 output valve.
D) finish a little 13 at the entrance whipping, the pressure roller transmission is released order and 5 is closed, and torque control 7 finishes.
More than when pressing and the transmission control after pressing for pressure roller, the transmission when pressure roller transmission control and pressure roller are opened when below starting for entrance is controlled:
E) begin to dash cover point 14 at entrance, the pressure roller transmission is released order and 5 is opened, and torque control 7 is taked in the transmission of pressure roller.
F) the pressure roller transmission release order 5 open a period of time after, discharge idler roller group and other transmission.Discharge idler roller group and other transmissions behind the certain hour, the purpose of doing like this is to be with the sliding phenomenon of steel on idler roller group surface when avoiding the idler roller band-type brake to open.Release order for the pressure roller transmission and 5 open back 1-2 second the release time 15 of described idler roller group and other transmission, and the present invention adopted 1.5 seconds.
G) transmission with pressure roller switches to software feature control 6 by torque control 7, and the rotating speed of platen motor was less than its specified permission tachometer value 2 when the condition of switching was opened pressure roller for assurance.After the entrance starting, the pressure roller transmission switches to DROOP control 6 by torque control 7, when having guaranteed low speed between band steel and the idler roller synchronously, and pressure roller and the asynchrony phenomenon of being with between the steel when avoiding pressure roller to open.Switch to DROOP by torque control 7 and control at 6 o'clock, the duty of motor need just can be stabilized in DROOP control mode 6 times through after a while, therefore, in one embodiment of the invention, when the speed of entrance idler roller group reaches 150% when wearing tape speed and putting 16, be that velocity amplitude reaches 150% when wearing tape speed value 19, transmission is switched to DROOP control 6 by torque control 7.The condition of switching can be adjusted, and this numerical value can reach for the speed of entrance idler roller group greater than a scope of wearing tape speed, and when opening with pressure roller, motor operations is under the DROOP mode and stabilize to foundation.
H) in 17 dynamic pressure roller OPENs 9 of speed point, this moment, barrel velocity reached the velocity amplitude 20 after the soft control mode of pressure roller is stablized, and pressure roller presses instruction 8 closes, and pressure roller is opened.
I) pressure roller is accepted to open fully behind the complete opening signal point 18 at sensor, and the pressure roller transmission is released order and 5 closed, and software feature control 6 finishes.
At present, the magnetic tape trailer that the present invention effectively reduces the uncoiler zone wipe to scratch, and wipes the scuffing rate and is reduced to 0.3% by original 0.6%, has improved the quality and the lumber recovery of product.
Other similar units and newly-built unit can be considered to design according to such scheme.
Claims (7)
1. a continuous rolling mill entrance region tight rolls system comprises idler roller and pressure roller thereof, and an automatic control system that is used to control described milling train entrance region tight rolls system, and it is characterized in that: described pressure roller connects a power-equipment.
2. continuous rolling mill entrance region tight rolls system as claimed in claim 1 is characterized in that: described power-equipment is an electro-motor.
3. continuous rolling mill entrance region tight rolls system as claimed in claim 2 is characterized in that: described electro-motor connects an encoder.
4. continuous rolling mill entrance region tight rolls system control method is characterized in that comprising:
A) pressure roller is in open mode, when the entrance linear velocity during less than the specified permissible velocity of platen motor the pressure roller transmission discharge, adopt software feature control;
B) press pressure roller after accelerating to the speed of idler roller group, and adopt the speed ramp of idler roller group;
C) after pressure roller pressed end, the transmission of pressure roller switched to torque control by software feature control;
D) the entrance whipping is finished, and the pressure roller transmission discharges closes, and torque control finishes;
E) entrance begins to dash cover, and the pressure roller transmission discharges opens, and torque control is taked in the transmission of pressure roller;
F) after the pressure roller transmission discharges and opens a period of time, discharge idler roller group and other transmission;
G) transmission with pressure roller switches to software feature control by torque control, and the rotating speed of platen motor was less than its specified permission rotating speed when the condition of switching was opened pressure roller for assurance;
H) open pressure roller;
I) pressure roller is opened fully, and the pressure roller transmission discharges closes, and software feature control finishes.
5. continuous rolling mill entrance region tight rolls system control method as claimed in claim 4 is characterized in that: step (c) is that pressure roller presses instruction and carries out back 1.5-3 second described switching time.
6. continuous rolling mill entrance region tight rolls system control method as claimed in claim 4 is characterized in that: discharge back 1-2 second for the pressure roller transmission release time of the described idler roller group of step (f) and other transmission.
7. continuous rolling mill entrance region tight rolls system control method as claimed in claim 4 is characterized in that: entrance speed is greater than wearing 150% of tape speed when switching in the step (g).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100366978A CN101229566B (en) | 2007-01-22 | 2007-01-22 | Control method of continuous rolling mill entrance region tight rolls system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100366978A CN101229566B (en) | 2007-01-22 | 2007-01-22 | Control method of continuous rolling mill entrance region tight rolls system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101229566A true CN101229566A (en) | 2008-07-30 |
| CN101229566B CN101229566B (en) | 2011-03-30 |
Family
ID=39896536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100366978A Active CN101229566B (en) | 2007-01-22 | 2007-01-22 | Control method of continuous rolling mill entrance region tight rolls system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101229566B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106391723A (en) * | 2016-10-28 | 2017-02-15 | 鞍钢未来钢铁研究院 | Double coiling speed switching and tension establishing method for cold continuous mill |
| CN106807760A (en) * | 2015-11-27 | 2017-06-09 | 宝山钢铁股份有限公司 | Tension force optimization method during cold-strip steel welding whipping |
| CN106807759A (en) * | 2016-12-20 | 2017-06-09 | 中冶南方（武汉）自动化有限公司 | Prevent Cold-Rolled Strip Temper Mill entrance jockey pulley from accumulating the threading control method of band |
| CN107716559A (en) * | 2017-09-26 | 2018-02-23 | 北京首钢自动化信息技术有限公司 | A kind of control method for preventing twin pressure roller gateway tension variation excessive |
| CN111618092A (en) * | 2020-06-01 | 2020-09-04 | 宝钢湛江钢铁有限公司 | Control method for reducing scratch defects of thick plate finish rolling |
| WO2022083263A1 (en) * | 2020-10-22 | 2022-04-28 | 北京科技大学 | Roller table aluminum pickup control method based on micro torque of driving roller |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2097838U (en) * | 1991-05-21 | 1992-03-04 | 黄洁 | Chain type vibration drawing machine |
| CN1088139A (en) * | 1992-12-12 | 1994-06-22 | 包头钢铁稀土公司稀土研究院 | The control method of sheet metal strip and device |
-
2007
- 2007-01-22 CN CN2007100366978A patent/CN101229566B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807760A (en) * | 2015-11-27 | 2017-06-09 | 宝山钢铁股份有限公司 | Tension force optimization method during cold-strip steel welding whipping |
| CN106391723A (en) * | 2016-10-28 | 2017-02-15 | 鞍钢未来钢铁研究院 | Double coiling speed switching and tension establishing method for cold continuous mill |
| CN106807759A (en) * | 2016-12-20 | 2017-06-09 | 中冶南方（武汉）自动化有限公司 | Prevent Cold-Rolled Strip Temper Mill entrance jockey pulley from accumulating the threading control method of band |
| CN107716559A (en) * | 2017-09-26 | 2018-02-23 | 北京首钢自动化信息技术有限公司 | A kind of control method for preventing twin pressure roller gateway tension variation excessive |
| CN107716559B (en) * | 2017-09-26 | 2019-03-01 | 北京首钢自动化信息技术有限公司 | A kind of control method for preventing twin pressure roller entrance tension variation excessive |
| CN111618092A (en) * | 2020-06-01 | 2020-09-04 | 宝钢湛江钢铁有限公司 | Control method for reducing scratch defects of thick plate finish rolling |
| CN111618092B (en) * | 2020-06-01 | 2022-05-03 | 宝钢湛江钢铁有限公司 | Control method for reducing scratch defects of thick plate finish rolling |
| WO2022083263A1 (en) * | 2020-10-22 | 2022-04-28 | 北京科技大学 | Roller table aluminum pickup control method based on micro torque of driving roller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101229566B (en) | 2011-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101229566B (en) | Control method of continuous rolling mill entrance region tight rolls system | |
| CN105344712B (en) | A kind of raw material plate of cold continuous rolling opens car method | |
| CN103785694B (en) | The method of car broken belt is opened in prevention | |
| CN105417014A (en) | Full-automatic tensioning control system and method used for rubber belt machine | |
| CN107377632A (en) | It is a kind of to reduce reinforcing bar size poor temperature control system and operating method end to end | |
| KR101581168B1 (en) | Method for adjusting a drive load for a plurality of drives of a mill train for rolling rolling stock, control and/or regulation device, storage medium, program code and rolling mill | |
| CN110064653A (en) | A kind of method and apparatus applied to the rolling of cold continuous rolling changeover portion | |
| CN107755436B (en) | A method of solution thin gauge strip tail portion loses tension and flies into coiling machine | |
| CN106391723B (en) | The double coiling speeds of cold continuous rolling switch and build Zhang Fangfa | |
| CN102601165B (en) | Control method for small-tension tape penetrating | |
| CN104043656A (en) | Method for testing hydraulic state of dynamic roll gaps through static pressure maintaining | |
| CN104785528A (en) | Method for locating roll-gap-opening no-load channeling roll of UCM rolling mill | |
| KR101404347B1 (en) | Operation control method of tandem rolling mill, and method for producing hot-rolled steel sheet using same | |
| CN103008359A (en) | Thin material threading control method for guide rulers of hot rolling coiler | |
| CN103357676B (en) | A kind of system of subdivision control of level liquid injection pressure and method thereof | |
| CN105008058A (en) | Installation and method for rolling a metal strip | |
| KR101940870B1 (en) | Strip coiling apparatus | |
| CN100566867C (en) | Control method of cold calender einlaufbereich | |
| CN210764343U (en) | Two-step graphite calendering device | |
| CN101011713A (en) | Lubrication coiling method for improving surface quality of hot-rolled coiling clamp roller | |
| CN106392353A (en) | Band steel welding system | |
| CN106064179A (en) | A kind of method that the UCM of prevention milling train final pass opens car broken belt | |
| CN114345933B (en) | Rolling method, device, medium and equipment for ultrathin strip steel | |
| CN2843647Y (en) | A kind of novel rolling mill of steel-jam proof | |
| CN1898038B (en) | Method for lubricating milling material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |