CN105583237B - Hot continuous rolling think gauge carbon steel coiling clamp roller transformation force control method - Google Patents
Hot continuous rolling think gauge carbon steel coiling clamp roller transformation force control method Download PDFInfo
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- CN105583237B CN105583237B CN201610024098.3A CN201610024098A CN105583237B CN 105583237 B CN105583237 B CN 105583237B CN 201610024098 A CN201610024098 A CN 201610024098A CN 105583237 B CN105583237 B CN 105583237B
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- 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
- B21B37/48—Tension control; Compression control
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Abstract
Hot continuous rolling think gauge carbon steel coiling clamp roller transformation force control method, suitable thicknesses >=8mm carbon steel, it is characterized in that the former pressure coefficient of input when coiling band steel is head and body part；Coiling band steel afterbody input transformation force coefficient after the last frame of finish rolling throws steel；Pressure changeable COEFFICIENT K=the K1+ △ K wherein, K：Transformation force coefficient（0<K <1） K1：Former pressure coefficient（General value is 0.4）；△K：Additonal pressure coefficient, value is 0.0 ~ 0.3.The present invention solves the problems, such as the scuffing that think gauge carbon steel is produced because bending on afterbody.The control of pinch roll automatic pressure-transforming power is realized, product surface qualification rate is improved on the premise of ensureing that scroll is good, achieves considerable benefit.
Description
Technical field
The coiling clamp roller of hot-continuous-rolling strip steel rolling line is automatically controlled, suitable thicknesses >=8mm of the present invention carbon steel.
Background technology
The effect of hot continuous rolling coiling area pinch roll is to roll finishing stand to complete to clamp by the strip of coiling area roller-way,
And be effectively wrapped on reel, form neat finished steel coils.Whether coiling clamp roller pressure reference properly determines completed belt
Steel quality, pressure is excessive to be ground into fault by strip；The too small pinch roll of pressure does not press tightly strip, especially think gauge（Thickness
≥8mm）Carbon steel after the last frame of finish rolling throws steel, the tension force of strip is small, and steel plate tail, which is drawn, not to be caused tightly to bend on steel plate, is being batched
During rub site machinery guard plate apparatus, produce upper surface cut, have a strong impact on sale and client uses.
Therefore, on the premise of good scroll is realized, it is to avoid bow produces the pass that cut is pinch roll control in tail part of band steel
One of key.
The content of the invention
The invention aims to both ensure strip scroll, again the afterbody of think gauge carbon steel can be made to be compressed by pinch roll,
Efficiently solve bow scuffing problem on the afterbody of think gauge carbon steel.
Technical scheme：
（1）Completed down to send current rolled steel kind coefficient by second computer according to rolling scaduled, calculated by primary computer
Go out the former pressure coefficient K of pinch roll1, Withdrawal roll pressure setting benchmark K1W1, W1=belt steel thickness × strip width × rolled steel germline
Number × 10-3。
（2）According to the steel grade coefficient and belt steel thickness of rolling carbon steel in former pressure coefficient K1On the basis of be superimposed an additional pressure
It is K that force coefficient △ K, i.e. finish rolling, which throw tail part of band steel pinch roll transformation force coefficient after steel,1+△K。
Primary computer adjusts pinch roll afterbody pressure reference value size by additonal pressure coefficient △ K, i.e., by folder
Send the roller pressure changeable pressure that control increase pinch roll is acted on afterbody strip, the problem of solving to bend in tail part of band steel.
Program Central Plains Withdrawal roll pressure setting benchmark is put into when head and the body part of coiling band steel；When the last machine of finish rolling
Frame throws coiling band steel afterbody input pinch roll pressure changeable benchmark W after steel, it is ensured that before carbon steel head and center section are normally batched
Put and realize the big Stress control of pinch roll afterbody.
Pinch roll pressure changeable benchmark algorithm： W=K W1
Pressure changeable COEFFICIENT K=K1+△K
Wherein W：Pinch roll pressure changeable benchmark（kN）
K：Transformation force coefficient（0<K<1）
W1：Pinch roll normal pressure（kN）
K1：Pinch roll original pressure coefficient（General value is 0.4）；
△K：Additonal pressure coefficient, value is 0.0 ~ 0.3.
The present invention implementation procedure be：When strip steel head reaches pinch roll position, and " Withdrawal roll pressure increasing " signal is connected,
Former pressure setting a reference value coiling band steel head and body part in input program；After the last frame of finish rolling throws steel, " last frame
When load relay " signal is turned off, the pinch roll pressure changeable a reference value coiling band steel afterbody after input change.
The present invention puts into different Withdrawal roll pressure a reference values according to coiling band steel different parts, has both solved because of band steel toe
Portion and body part pressure make coil of strip fault occur greatly, solve again because bow is made with outside plant equipment friction in tail part of band steel
Scratched into strip upper surface.
The present invention is applied in Taiyuan Iron and Steel Co. hot continuous rolling pinch roll control system, and effect is as follows：
（1）Realize and automatically controlled for think gauge carbon steel pinch roll pressure changeable, improve control accuracy.
（2）Both avoided because the excessive coil of strip of head pressure produces fault, turn avoid because of the too small carbon steel afterbody of afterbody pressure
Upper bow is scratched by mechanical guard plate apparatus, solves the mass defect of think gauge carbon steel upper surface generation.
（3）Scroll quality is not only ensure that, and is effectively improved the lumber recovery of coil of strip, the direct economy effect of acquirement
Annual 1000000 yuan or so of benefit.
Embodiment
Implementation process of the present invention is entirely to be realized automatically in computer program.Main process is：According to rolling carbon steel
Steel grade coefficient, original Withdrawal roll pressure is calculated by primary computer and sets a reference value, further according to belt steel thickness to pressure changeable system
Additonal pressure coefficient value is taken out in number value table and finally calculates pinch roll pressure changeable a reference value, is normally batched in guarantee carbon steel
On the premise of realize the big Stress control of pinch roll afterbody.
Table 1：Pressure changeable coefficient value table
| Thickness h（mm） | Variable coefficient △ K |
| h≤8 | 0.0 |
| 8 ＜ h≤9 | 0.1 |
| 9 ＜ h≤10 | 0.15 |
| 10 ＜ h≤11 | 0.2 |
| 11 ＜ h≤12 | 0.25 |
| ＞ 12 | 0.3 |
Embodiment 1：When batching carbon steel T610L, target thickness 8.9mm is sent under second computer, primary computer passes through
Pressure changeable coefficient value table checks in pinch roll transformation force coefficient △ K=0.1, program Central Plains pressure coefficient K1=0.4, and according to folder
Send roller pressure changeable Coefficient Algorithm K=K1+ △ K=0.4+0.1=0.5, i.e.,：When strip steel head reaches pinch roll position, " pinch roll
When pressure increasing " signal is connected, the coiling band steel head of former pressure reference coefficient 0.4 and body part in input program；Work as finish rolling
Last frame is thrown after steel, when " last frame load relay " signal is turned off, the coiling band steel tail of pressure coefficient 0.5 after input change
Portion.
Embodiment 2：When batching carbon steel T610L, target thickness 10mm is sent under second computer, primary computer is by becoming
Pressure coefficient value table checks in pinch roll transformation force coefficient △ K=0.15, program Central Plains pressure reference COEFFICIENT K1=0.4, and according to
Pinch roll pressure changeable Coefficient Algorithm K=K1+ △ K=0.4+0.15=0.55, i.e.,：When strip steel head reaches pinch roll position, " press from both sides
Roller pressure is sent to increase " signal is when connecting, the coiling band steel head of former pressure coefficient 0.4 and body part in input program；Work as finish rolling
Last frame is thrown after steel, when " last frame load relay " signal is turned off, the coiling band steel tail of pressure coefficient 0.55 after input change
Portion.
Embodiment 3：When batching carbon steel T610L, target thickness 11.8mm is sent under second computer, primary computer passes through
Pressure changeable coefficient value table checks in pinch roll transformation force coefficient △ K=0.25, program Central Plains pressure coefficient K1=0.4, pinch roll becomes
Pressure coefficient K=K1+ △ K=0.4+0.25=0.65, i.e.,：When strip steel head reaches pinch roll position, " Withdrawal roll pressure increasing " letter
When number connecting, the coiling band steel head of former pressure coefficient 0.4 and body part in input program；After the last frame of finish rolling throws steel,
When " last frame load relay " signal is turned off, the coiling band steel afterbody of pressure coefficient 0.65 after input change.
In a word, it is necessary to which carrying out debugging according to live coil actual conditions determines pinch roll transformation force coefficient, by implementing to be somebody's turn to do
Bend phenomenon after technology on carbon steel afterbody and obtained obvious control, carbon steel afterbody scratches problem and obtained effective solution, meets
Customer demand, effect is very good.
Claims (1)
1. hot continuous rolling think gauge carbon steel coiling clamp roller transformation force control method, it is characterized in that when coiling band steel is head and body
Former pressure coefficient is put into during part；Coiling band steel afterbody input transformation force coefficient after the last frame of finish rolling throws steel；
Pressure changeable COEFFICIENT K=the K1+△K
Wherein, K：Transformation force coefficient, 0< K <1；
K1：Former pressure coefficient, value is 0.4；
△K：Additonal pressure coefficient, value is 0.0 ~ 0.3；
When strip steel head reaches pinch roll position, and " Withdrawal roll pressure increasing " signal is connected, the former pressure setting in input program
A reference value coiling band steel head and body part；After the last frame of finish rolling throws steel, when " last frame load relay " signal is turned off,
Pinch roll pressure changeable a reference value coiling band steel afterbody after input change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610024098.3A CN105583237B (en) | 2016-01-15 | 2016-01-15 | Hot continuous rolling think gauge carbon steel coiling clamp roller transformation force control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610024098.3A CN105583237B (en) | 2016-01-15 | 2016-01-15 | Hot continuous rolling think gauge carbon steel coiling clamp roller transformation force control method |
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| Publication Number | Publication Date |
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| CN105583237A CN105583237A (en) | 2016-05-18 |
| CN105583237B true CN105583237B (en) | 2017-08-15 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755436B (en) * | 2016-08-22 | 2018-12-04 | 山西太钢不锈钢股份有限公司 | A method of solution thin gauge strip tail portion loses tension and flies into coiling machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02303625A (en) * | 1989-05-16 | 1990-12-17 | Mitsubishi Electric Corp | Tension controller between hot rolling mill and coiler |
| CN101452297B (en) * | 2007-11-29 | 2010-12-01 | 宝山钢铁股份有限公司 | Withdrawal roll pressure control method for coiler |
| CN101439366A (en) * | 2008-12-25 | 2009-05-27 | 山西太钢不锈钢股份有限公司 | Method for coiling hot continuous rolling high-intensity medium plate |
| JP2013123733A (en) * | 2011-12-14 | 2013-06-24 | Jfe Steel Corp | Controller and control method for pinch roll gap |
| CN104353676B (en) * | 2014-11-14 | 2016-04-13 | 北京金自天正智能控制股份有限公司 | A kind of bulk lots volume pinch roll control method for fully automatic |
| CN104815870B (en) * | 2015-04-18 | 2017-03-01 | 山西太钢不锈钢股份有限公司 | The control method of hot continuous rolling chrome stainless steel side guide plate of recoiling machine pressure changeable |
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