CN106475431B - Improve the control method of hot rolling variety steel surface quality - Google Patents
Improve the control method of hot rolling variety steel surface quality Download PDFInfo
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- CN106475431B CN106475431B CN201611064975.6A CN201611064975A CN106475431B CN 106475431 B CN106475431 B CN 106475431B CN 201611064975 A CN201611064975 A CN 201611064975A CN 106475431 B CN106475431 B CN 106475431B
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- steel
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- cooling water
- roller
- strip
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
-
- 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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
- B21B37/76—Cooling control on the run-out table
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The control method for improving hot rolling variety steel surface quality, belongs to steel rolling field, that is, first determines whether the material code of the hot rolling variety steel sent under second computer is equal to the material code of easy-to-rust variety steel；If material code is equal, when finish rolling end rack load is connected, G roller-way cooling waters are closed；When finish rolling end rack load turns off, G roller-way cooling waters are opened；Pinch roller, Wrapping Roll, reel component cooling water are closed when " strip steel head reaches heat inspection window " signal is connected before coiling machine；Pinch roller, Wrapping Roll, reel component cooling water are opened when " tail part of band steel reaches heat inspection window " signal is connected before coiling machine.The invention avoids variety steel coil of strip internal layer surface corrosions, improve finished surface quality, improve coil of strip qualification rate, reduce Customer Quality objection, achieve good benefit.
Description
Technical field
Technical field is batched the invention belongs to hot-continuous-rolling strip steel, and the present invention is useful in during hot-strip batches.
Background technology
It is to transport for convenience that hot-strip is rolled into coil of strip by coiling machine, certain is found when uncoiling after the customer of steel coil transportation
There are a large amount of corrosion phenomenas on the coil of strip surface of variety steel.Follow-up study analysis finds hot-strip after finish rolling end rack is pierced by, warp
It crosses G roller-ways, pinch roller, Wrapping Roll and enters reel, mechanical equipment is simultaneously during rolling up as finished steel coils, when hot rolling reeling strip
Industrial water cooling is needed, when by these equipment, component cooling water pours belt steel surface and remains in coil of strip interlayer strip, with
The cooling of coil of strip, residual water cause corrosion to certain variety steel.The coil of strip of this special kinds is waited for by transporting or placing for a long time
Find that interlayer surface there are a large amount of corrosion phenomenas, seriously affects product quality and the benefit of client when lower process opens coil of strip.So steel
It is the main reason for causing corrosion that component cooling water, which remains in coil of strip interlayer, in volume coiling process.Therefore it needs according to steel grade point
Class is ensureing for easy-to-rust variety steel and ordinary steel realization strip tracking timing control component cooling water opening and closing respectively to G
Roller-way, pinch roller, Wrapping Roll, reel equipment carry out under the premise of normally cooling down, and solve the problems, such as hot-rolled steel surface corrosion.
Invention content
In order to improve hot rolling variety steel surface quality, the present invention provides a kind of control improving hot rolling variety steel surface quality
Method.
Technical scheme of the present invention：A kind of control method improving hot rolling variety steel surface quality, it is characterized in that sentencing first
Whether the material code of the hot rolling variety steel sent under disconnected second computer is equal to the material code of easy-to-rust variety steel；
If material code is equal, when finish rolling end rack load is connected, G roller-way cooling waters are closed；When finish rolling end machine
When frame load turns off, G roller-way cooling waters are opened；
Pinch roller, Wrapping Roll, reel equipment are closed when " strip steel head reaches heat inspection window " signal is connected before coiling machine
Cooling water；It is cold that pinch roller, Wrapping Roll, reel equipment are opened when " tail part of band steel reaches heat inspection window " signal is connected before coiling machine
But water.Strip steel head reach heat inspection window refer to heat examine strip steel head position section；Tail part of band steel reaches heat inspection window
Mouth refers to that the section of tail part of band steel position is lost in heat inspection inspection.
If material code is not equal to easy-to-rust variety steel code, restore original G roller-ways, pinch roller, Wrapping Roll, reel
Component cooling water control logic.
The present invention is switched by component cooling water control logic, realization can meet the normal refrigerating function of taking-up equipment and
It can solve the problems, such as coils of hot-rolled steel interlayer surface corrosion, improve hot-rolled product quality.
The present invention had not only met the needs of equipment refrigerating function, but also solved the problems, such as the corrosion of coils of hot-rolled steel interlayer surface.
For the present invention after the coiling coater use of Taiyuan Iron and Steel Co. hot continuous rolling factory, effect is as follows：
（1）It realizes hot continuous rolling taking-up equipment and cooling control is carried out according to steel grade difference, improve the product matter of variety steel
Amount, solves the problems, such as hot-rolled steel surface corrosion；
（2）It ensures the refrigerating function of hot continuous rolling taking-up equipment, and reduces Customer Quality objection, obtain direct economy effect
Annual 1500000 yuan or so of benefit.
Description of the drawings
Fig. 1 is G roller-way cooling water control logic charts.
Fig. 2 is pinch roller cooling water control logic chart.
Fig. 3 is Wrapping Roll cooling water control logic chart.
Fig. 4 is to help a cooling water control logic chart.
G roller-way cooling water ON/OFF control blocks, pinch roller cooling water ON/OFF control block, Wrapping Roll cooling
Water ON/OFF control block, reel cooling water open and close control block, former logic control G roller-way cooling waters open order, essence
Roll last rack load OFF signal, former logic control G roller-ways cooling water shutdown command, finish rolling end rack load ON signals,
Current rolling kind material code（Integer value）, easy-to-rust steel grade material code（Integer value）, former logic control folder
Roller cooling water is sent to open order, former logic control pinch roller cooling water shutdown command, former logic control Wrapping Roll cooling
Water opens order, former logic control Wrapping Roll cooling water shutdown order, and former logic control reel cooling water opens order,
Former logic control reel cooling water shutdown command, tail part of band steel reach heat inspection window, and strip steel head reaches heat inspection window
Mouthful.
Specific implementation mode
Implementation process of the present invention is entirely to realize to automatically control G roller-ways, pinch roller, Wrapping Roll, volume in computer program
The opening and closing of cylinder device cooling water.According to the hot rolling variety steel for separating easy-to-rust with steel material code area sent under second computer,
Then the cooling water opening and closing of G roller-ways, pinch roller, Wrapping Roll, reel is controlled respectively.
When material code is easy-to-rust variety steel, all devices cooling water is closed when coil；After having rolled up this block steel, open
Batch all devices cooling water；
When material code is not easy-to-rust variety steel, program comes into operation reel taking equipment cooling water control logic.
Shown in Fig. 1, NCM_I is to compare integer quantity logical block：X1, X2 are input ports, and QU, QE, QL are output ports；Such as
Two integer quantity numerical value of fruit input port compare X1>X2, then QU=1, QE=0, QL=0；If two integer numerical quantities of input port
Compare X1=X2, then QE=1, QU=0, QL=0；If two integer quantity numerical value of input port compare X1<X2, then QL=1, QE=0, QL
=0 ；
AND is logical AND block, and I1, I2 are two Boolean type amount inputs, and Q is output；If I1, I2 two is inputted while being
1, then Q outputs are the result is that 1；If I1, I2 two inputs any one and is exported the result is that 0 for 0, Q；
BSW is selection logical block, and X1, X2 are two Boolean type amount input ports, and I is selecting switch, and Q is output port；
As selecting switch I=0, Q outputs are X1；As selecting switch I=1, Q outputs are X2；
RSR is to reset priority logic block, and S is setting switch, and R is reset switch, and Q is output, and QN is that output negates；When setting
When bit switch S is 1, Q exports 1 and QN outputs 0；When reset switch R is 1, Q exports 0 and QN outputs 1；When setting switch S is 1
And reset switch R be 1 when, reset switch preferentially be Q export 0 and QN output 1；When setting switch S is 0 and reset switch R is 0
When, it is constant to reset priority logic block RSR blocks output hold mode.
The present invention realize by material code identify rolling steel whether easy-to-rust, if rolling be easy-to-rust steel
Kind, two integer quantity numerical value for comparing integer quantity logical block NCM_I block input ports compare X1=X2, then QE outputs are 1, work as band
Steel reaches finish rolling end rack, and " finish rolling end rack load ON " is 1, i.e. and two Boolean quantity I1 of logical AND block AND block input port=
1, Q outputs in I2=1 item are 1；Because the switch I of selection logical block BSW blocks is connected to compare QE=1 of integer quantity logical block NCM_I blocks,
So Q outputs is port status=1 X2, i.e., the reset switch R for resetting priority logic block RSR blocks at this time is 1, realizes that rolling is easy
When corrosion steel grade, " finish rolling end rack load ON " signal is once the cooling water for connecting shutdown G roller-ways；When " finish rolling end rack load
The setting switch S that priority logic block RSR blocks are resetted when OFF " is 1, opens the cooling water of G roller-ways；If rolling is general
Logical variety steel, two integer quantity numerical value for comparing integer quantity logical block NCM_I block input ports compare X1 not equal to X2, then QE is defeated
It is 0 to go out, because the switch I of selection logical block BSW blocks is connected to compare QE=0 of integer quantity logical block NCM_I blocks, so Q outputs
It is X1 port status, that is, realizes the control logic for the former G roller-ways cooling water that comes into operation.
Shown in Fig. 2, this programme easy-to-rust variety steel pinch roller cooling water control logical AND G roller-way cooling water control logics
Difference is to trigger the signal difference of shutdown/opening cooling water：That is the signal of G roller-ways cooling water triggering shutdown/opening is " finish rolling end
Rack load ON/OFF "；The signal of triggering pinch roller cooling water shutdown/opening is " strip steel head/tail portion reaches heat inspection window ".
The present invention realize by material code identify rolling steel whether easy-to-rust, if rolling be easy-to-rust steel
Kind, two integer quantity numerical value for comparing integer quantity logical block NCM_I block input ports compare X1=X2, then QE outputs are 1, work as band
Steel head reach heat before coiling machine examine in the interval range of strip steel head position, " strip steel head reaches heat and examines window " signal
It is 1, i.e., two Boolean quantity I1=1 of logical AND block AND block input port, I2=1 item Q outputs are 1；Because selecting logical block BSW blocks
Switch I be connected to compare QE=1 of integer quantity logical block NCM_I blocks, it is so Q outputs is port status=1 X2, i.e., multiple at this time
The reset switch R of position priority logic block RSR blocks is 1, when realizing rolling easy-to-rust steel grade, " strip steel head reaches heat inspection window " letter
Number once connect shutdown pinch roller cooling water；The section of tail part of band steel position is lost in heat inspection inspection before tail part of band steel reaches coiling machine
In range, " tail part of band steel reaches heat inspection window " signal is connected, and the setting switch S for resetting priority logic block RSR blocks is 1, is opened
The cooling water of pinch roller；If rolling is common variety steel, compare integer quantity logical block NCM_I block input ports two are whole
Type numerical quantity compares X1 and is not equal to X2, then QE outputs are 0, is patrolled because the switch I of selection logical block BSW blocks is connected to compare integer quantity
QE=0 of block NCM_I blocks is collected, so Q outputs is X1 port status, that is, realizes the control logic for the former pinch roller cooling water that comes into operation.
It is identical about the Wrapping Roll of easy-to-rust variety steel, reel cooling water control logical AND pinch roller control logic, herein
It repeats no more.
Claims (1)
1. a kind of control method improving hot rolling variety steel surface quality, during being batched suitable for hot-strip；It is characterized in that
Judge whether the material code of the hot rolling variety steel sent under second computer is equal to the material code of easy-to-rust variety steel:If material
Matter code is equal, then when finish rolling end rack load is connected, closes G roller-way cooling waters；When finish rolling end rack load turns off, beat
Open G roller-way cooling waters；Pinch roller, Wrapping Roll, volume are closed when " strip steel head reaches heat inspection window " signal is connected before coiling machine
Cylinder device cooling water；Pinch roller, Wrapping Roll, reel are opened when " tail part of band steel reaches heat inspection window " signal is connected before coiling machine
Component cooling water；If material code be not equal to easy-to-rust variety steel code, restore original G roller-ways, pinch roller, Wrapping Roll,
Reel component cooling water control logic；
If rolling is easy-to-rust steel grade, compare two integer quantity numeric ratios of integer quantity logical block NCM_I block input ports
Compared with X1=X2, then output port QE is 1, before strip steel head reaches coiling machine heat examine strip steel head position interval range
Interior, " strip steel head reaches heat inspection window " signal is 1, i.e. two Boolean quantity I1=1, I2=1 of logical AND block AND block input port
Then Q outputs are 1；The switch I of selection logical block BSW blocks is connected to compare output port QE=1 of integer quantity logical block NCM_I blocks,
Output Q=1 of logical AND block AND block, the reset switch R for resetting priority logic block RSR blocks at this time are 1, realize rolling easy-to-rust
When steel grade, " strip steel head reaches heat inspection window " signal is once the cooling water for connecting shutdown pinch roller；
Heat inspection inspection is lost in the interval range of tail part of band steel position before tail part of band steel reaches coiling machine, and " tail part of band steel reaches heat inspection
Window " signal is connected, and the setting switch S for resetting priority logic block RSR blocks is 1, opens the cooling water of pinch roller；
If rolling is common variety steel, compare two integer quantity numbers of integer quantity logical block NCM_I block input ports X1, X2
Value compares, if X1 is not equal to X2, output port QE is 0, and the switch I of logical block BSW blocks is selected to be connected to compare integer quantity
Output port QE=0 of logical block NCM_I, the output Q of logical AND block AND block are to compare integer quantity logical block NCM_I blocks wherein
One input port X1 port status realizes the control logic for the former pinch roller cooling water that comes into operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064975.6A CN106475431B (en) | 2016-11-28 | 2016-11-28 | Improve the control method of hot rolling variety steel surface quality |
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| CN201611064975.6A CN106475431B (en) | 2016-11-28 | 2016-11-28 | Improve the control method of hot rolling variety steel surface quality |
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| CN106475431A CN106475431A (en) | 2017-03-08 |
| CN106475431B true CN106475431B (en) | 2018-10-09 |
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| CN109500096B (en) * | 2018-12-03 | 2020-11-03 | 山西太钢不锈钢股份有限公司 | Control method and control system for preventing special steel from being rolled into flat coil |
| CN114210740A (en) * | 2021-12-06 | 2022-03-22 | 山西太钢不锈钢股份有限公司 | Automatic control method for cooling water of hot continuous rolling strip steel rolling line |
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| CN101690950B (en) * | 2009-07-11 | 2011-08-17 | 山西太钢不锈钢股份有限公司 | Method of reeling stainless strip steel for railway vehicle |
| CN202893873U (en) * | 2012-09-27 | 2013-04-24 | 河南中孚实业股份有限公司 | Aluminum hot rolling recoiling machine sector plate cooling system |
| CN104438377A (en) * | 2014-09-30 | 2015-03-25 | 巢湖广丰金属制品有限公司 | Automatic control system and method for strip steel surface rust removal |
| CN204953552U (en) * | 2015-09-08 | 2016-01-13 | 河北蓦然环保科技有限公司 | Cold rolled steel strip surface rust cleaning production line |
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