CN106862276A - Hot tandem rolling special steel main transmission overload control method - Google Patents
Hot tandem rolling special steel main transmission overload control method Download PDFInfo
- Publication number
- CN106862276A CN106862276A CN201710066431.1A CN201710066431A CN106862276A CN 106862276 A CN106862276 A CN 106862276A CN 201710066431 A CN201710066431 A CN 201710066431A CN 106862276 A CN106862276 A CN 106862276A
- Authority
- CN
- China
- Prior art keywords
- overload
- main transmission
- frame
- setting valve
- power down
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Hot tandem rolling special steel main transmission overload control method, belongs to hot-tandem unit main transmission automation field, and it includes(1)It is 2.25*I to hand over system power failure setting valvee, AC-DC-AC system power down setting valve is 1.75*Ie, IeIt is the rated current of frame main transmission;Main transmission overload setting valve is 80% the 90% of power down setting valve;(2)2 4s are reached when the frame overload duration, overload signal is sent out to primary computer, primary computer takes deceleration control algolithm, realize that mm finishing mill unit automatic retarding is controlled, until frame overload signal cancellation, return to conventional main transmission control.This invention removes fine-rolling strip steel afterbody main transmission overload power down failure, the equipment fault time is saved, improve production efficiency, achieved good benefit.
Description
Technical field
The present invention is hot-tandem unit main transmission automation field, is mainly used in rolling load, mill speed big
Strip, including nickel and stainless steel, silicon steel and high-strength steel.
Background technology
Finishing stand main transmission is divided into friendship friendship system and AC-DC-AC system, and different its overload setting valve of system are not
Same, power down setting valve is also different.
As the mill speed that special steel billet increases and thinning brings is improved again, 7 machine frame rolling mills of mm finishing mill unit main transmission
(F0-F6)Electric current also becomes increasing, and especially main transmission overload power down occurs frequently in tail part of band steel.
Due to strip exit temperature at finishing to be ensured, mm finishing mill unit mill speed needs are lasting under normal circumstances accelerates, and one
Denier some external conditions change, and tail part of band steel will result in FM main drive rolling mill overload, when overload continues
Between it is long will produce power down, cause steel scrap between frame to have a strong impact on being normally carried out for rolling line production.
The content of the invention
In order to solve the problems, such as tail part of band steel frame overload not power down steel scrap, so that during ensureing production special steel kind
Not steel scrap between frame, it is ensured that the stability contorting of hot rolling production.
Special steel of the present invention includes nickel and stainless steel, silicon steel and high-strength steel.
Technical scheme:Hot tandem rolling special steel main transmission overload control method, it is characterized in that including following interior
Hold:
(1)It is 2.25*I to hand over system power failure setting valvee, AC-DC-AC system power down setting valve is 1.75*Ie, IeIt is the main biography of frame
The rated current of dynamic system;Main transmission overload setting valve is the 80%-90% of power down setting valve;
(2)When frame main transmission detects its electric current more than overload value, as frame overload;If overload continues
Time reaches 2-4s, and overload signal is sent out to primary computer, and primary computer takes deceleration control algolithm, realizes mm finishing mill unit
Automatic retarding is controlled, and until frame overload signal cancellation, returns to conventional main transmission control;
The deceleration control algolithm is as follows:
Vn = Vn-1- a*TA
Wherein
VnIt is the n-th moment finish rolling mill speed, m/s after overload;
Vn-1It is the (n-1)th moment finish rolling mill speed, m/s after overload;
A subtracts acceleration magnitude, value 0.5-1, m/s for finish rolling2;
TAIt is computer sampling time, value 0.01s.
The primary computer hands over transmission system to use Siemens Company TDC+ using the TDC of Siemens Company
SIMADYN D, hand over orthogonal transmission system to use Siemens Company S150, are used between main transmission and primary computer
Profibus network communication modes realize speed control.
The present invention realizes the stability contorting of hot-rolling finishing mill frame main transmission load when the kinds such as special steel are rolled;Disappear
Except the problem of hot-rolling finishing mill frame tail part of band steel main transmission overload power down, reduce the cancel closedown time and steel scrap is existing
As annual 2580000 yuan or so of the direct economic benefit of acquirement.
Specific embodiment
Implementation process of the present invention is entirely to be automatically obtained in computer program.
When special steel is rolled, according to the overload signal that FM main drive sends, primary computer realizes mm finishing mill unit
Automatic retarding control function, to avoid finish rolling frame main transmission overload power down, meets process control needs.
FM main drive overload value is defined as 89%(Hand over friendship system)、86%(AC-DC-AC system), the overload duration
It it is 3 seconds, finish rolling subtracts acceleration value for 0.5m/s2。
By taking F0 frame main transmissions as an example:F0 is friendship friendship system and I0eIt is the frame main transmission rated current, therefore frame master is set
Transmission overload value is 2.25*I0e89%, when F0 frame transmission system actual current values reach the frame overload value and continue
When 3 seconds, overload signal just is sent to primary computer, primary computer subtracts acceleration 0.5m/s according to finish rolling2
Realize that automatic retarding control is i.e. automatic and reduce mm finishing mill unit mill speed, so that F0 frame main transmissions electric current is reduced, until the machine
Frame overload blackout, cancels mm finishing mill unit deceleration control, recovers conventional control.
By taking F1 frame main transmissions as an example:F1 is AC-DC-AC system and I1eIt is the frame main transmission rated current, therefore sets and be somebody's turn to do
Frame main transmission overload value is 1.75*I1e86%, when the actual current value of F1 frame transmission systems reaches the frame overload
It is worth and the duration is when 3 seconds, just send overload signal to primary computer, primary computer subtracts acceleration according to finish rolling
0.5m/s2Realize that automatic retarding control is i.e. automatic and reduce mm finishing mill unit mill speed, so that F1 frame main transmissions electric current is reduced, directly
To the frame overload blackout, cancel mm finishing mill unit deceleration control, recover conventional control.
Claims (1)
1. hot tandem rolling special steel main transmission overload control method, it is characterized in that including the description below:
(1)It is 2.25*I to hand over system power failure setting valvee, AC-DC-AC system power down setting valve is 1.75*Ie, IeIt is the main biography of frame
The rated current of dynamic system;Main transmission overload setting valve is the 80%-90% of power down setting valve;
(2)When frame main transmission detects its electric current more than overload value, as frame overload;If overload continues
Time reaches 2-4s, and overload signal is sent out to primary computer, and primary computer takes deceleration control algolithm, realizes mm finishing mill unit
Automatic retarding is controlled, and until frame overload signal cancellation, returns to conventional main transmission control;
The deceleration control algolithm is as follows:
Vn = Vn-1- a*TA
Wherein
VnIt is the n-th moment finish rolling mill speed, m/s after overload;
Vn-1It is the (n-1)th moment finish rolling mill speed, m/s after overload;
A subtracts acceleration magnitude, value 0.5-1, m/s for finish rolling2;
TAIt is computer sampling time, value 0.01s.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710066431.1A CN106862276B (en) | 2017-02-07 | 2017-02-07 | Hot tandem rolling special steel main transmission overload control method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710066431.1A CN106862276B (en) | 2017-02-07 | 2017-02-07 | Hot tandem rolling special steel main transmission overload control method |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106862276A true CN106862276A (en) | 2017-06-20 |
CN106862276B CN106862276B (en) | 2018-09-14 |
Family
ID=59167491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710066431.1A Active CN106862276B (en) | 2017-02-07 | 2017-02-07 | Hot tandem rolling special steel main transmission overload control method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106862276B (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06339714A (en) * | 1993-05-31 | 1994-12-13 | Kawasaki Steel Corp | Method for controlling load of driving motor for slab rolling mill |
JPH10175009A (en) * | 1996-12-13 | 1998-06-30 | Toshiba Corp | Method for controlling thickness in continuous hot rolling mill |
CN104324952A (en) * | 2014-09-05 | 2015-02-04 | 山西太钢不锈钢股份有限公司 | Control method for load relay of hot continuous rolling thin-specification rolling frame |
CN104438361A (en) * | 2014-11-13 | 2015-03-25 | 北京科技大学 | Load experimenting and testing method for rolling mill alternating current main transmission electromechanical system |
CN106253757A (en) * | 2016-08-24 | 2016-12-21 | 中国重型机械研究院股份公司 | Hot-rolling mill high power DC transmission and control system |
-
2017
- 2017-02-07 CN CN201710066431.1A patent/CN106862276B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06339714A (en) * | 1993-05-31 | 1994-12-13 | Kawasaki Steel Corp | Method for controlling load of driving motor for slab rolling mill |
JPH10175009A (en) * | 1996-12-13 | 1998-06-30 | Toshiba Corp | Method for controlling thickness in continuous hot rolling mill |
CN104324952A (en) * | 2014-09-05 | 2015-02-04 | 山西太钢不锈钢股份有限公司 | Control method for load relay of hot continuous rolling thin-specification rolling frame |
CN104438361A (en) * | 2014-11-13 | 2015-03-25 | 北京科技大学 | Load experimenting and testing method for rolling mill alternating current main transmission electromechanical system |
CN106253757A (en) * | 2016-08-24 | 2016-12-21 | 中国重型机械研究院股份公司 | Hot-rolling mill high power DC transmission and control system |
Also Published As
Publication number | Publication date |
---|---|
CN106862276B (en) | 2018-09-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107342630B (en) | Phase modulator emergency control method and system for inhibiting direct current continuous commutation failure | |
DE102013112161A1 (en) | Control device of a machine tool with Zugspindelmotor and main spindle motor | |
CN102989787B (en) | Hot-rolled strip steel head and tail plate shape control method | |
CN110854870B (en) | Bus voltage automatic correction control method considering static synchronous compensator | |
CN109396195B (en) | Anti-seismic steel bar head and tail identification quick-falling control system and control method | |
CN103599927A (en) | Hot rolling titanium plate production method and system | |
CN105598181B (en) | Hot continuous rolling thin specification fine-rolling strip steel afterbody reduces roller force control method automatically | |
CN106862276B (en) | Hot tandem rolling special steel main transmission overload control method | |
CN108838212A (en) | Control method of hot rolling roughing mill | |
CN107681680A (en) | A kind of method of voltage pulsation during reduction alternating current filter group switching | |
CN109365543B (en) | Control system and method for hot rolling rough rolling final stand rolling mill in fault state | |
CN106992527A (en) | The adjusting method and system of voltage pulsation during alternating current filter group switching | |
JPH04317511A (en) | Overload controller for transmission line | |
CN104682383A (en) | Method and system for adjusting open loop point by remote automatic bus transfer devices | |
Khramshin | Improvements in the security of the inverting mode of a thyristor-controlled electric drive used in rolling strips of extended range | |
CN107790504B (en) | Tandem mill peak clipping control method for rolling | |
CN104084431B (en) | A kind of Stanermo wind-cooling linear roller-way and fan speed regulation method | |
CN113357921A (en) | Heating furnace roll table control system that goes out of stove | |
CN109248920B (en) | Method for rapidly treating rolling waste by using coil box | |
CN102000698A (en) | Method for eliminating fierce collision of slab head on mill roller table through medium plate mill | |
CN106340902B (en) | A kind of adjusting method eliminated photo-voltaic power generation station SVG and collect electric wire reactive circular power flow | |
CN104117537A (en) | Method and device for rolling threaded steel with Phi being 8 mm through 150-square casting billet in 23-pass rolling mode | |
CN203155709U (en) | Energy-saving rolling control system of wide weight belt production line | |
CN202651794U (en) | Main loop wiring structure of aluminum alloy surface treatment coloring silicon machine and oxidation silicon machine | |
CN102739324A (en) | Control method and device for self-excitation cancellation device or system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |