CN106475431A - 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
- Publication number
- CN106475431A CN106475431A CN201611064975.6A CN201611064975A CN106475431A CN 106475431 A CN106475431 A CN 106475431A CN 201611064975 A CN201611064975 A CN 201611064975A CN 106475431 A CN106475431 A CN 106475431A
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- CN
- China
- Prior art keywords
- cooling water
- steel
- strip
- roller
- roll
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- 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.)
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Classifications
-
- 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 of hot rolling variety steel surface quality is improved, belongs to steel rolling field, that is, first determine whether 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 frame load is connected, G roller-way cooling water is closed；When finish rolling end frame load is turned off, G roller-way cooling water is opened；When before coiling machine, " strip steel head reaches heat inspection window " signal closes pinch roll, Wrapping Roll, reel component cooling water when connecting；When before coiling machine, " tail part of band steel reaches heat inspection window " signal opens pinch roll, Wrapping Roll, reel component cooling water when connecting.Variety steel coil of strip internal layer surface corrosion is present invention, avoiding, finished surface quality is improve, coil of strip qualification rate is improve, Customer Quality objection is reduced, achieve good benefit.
Description
Technical field
The invention belongs to hot-continuous-rolling strip steel batches technical field, 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, finds certain after the customer of steel coil transportation during uncoiling
There are a large amount of corrosion phenomenas on the coil of strip surface of variety steel.After follow-up study analysis finds that hot-strip is passed from finish rolling end frame, warp
Cross G roller-way, pinch roll, Wrapping Roll and reel is entered, during rolling up as finished steel coils, during hot rolling reeling strip plant equipment is simultaneously
Industrial water cooling is needed, when through 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 transported through long-time or is placed, and is treated
Find when lower operation opens coil of strip that interlayer surface has a large amount of corrosion phenomenas, has a strong impact on product quality and the benefit of client.So steel
It is the main cause for causing corrosion that in volume coiling process, component cooling water remains in coil of strip interlayer.It is thus desirable to being divided according to steel grade
Class, for easy-to-rust variety steel and ordinary steel realization strip tracking SECO component cooling water opening and closing respectively, is ensureing to G
On the premise of roller-way, pinch roll, Wrapping Roll, reel equipment are normally cooled down, hot-rolled steel surface corrosion is solved the problems, such as.
Content of the invention
In order to improve hot rolling variety steel surface quality, the present invention provides a kind of control for improving hot rolling variety steel surface quality
Method.
Technical scheme：A kind of control method for improving hot rolling variety steel surface quality, 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 frame load is connected, G roller-way cooling water is closed；When finish rolling end, frame is born
When lotus turns off, G roller-way cooling water is opened；
When before coiling machine, " strip steel head reaches heat inspection window " signal closes pinch roll, Wrapping Roll, the cooling of reel equipment when connecting
Water；When before coiling machine, " tail part of band steel reaches heat inspection window " signal opens pinch roll, Wrapping Roll, the cooling of reel equipment when connecting
Water.Strip steel head reach heat inspection window refer to heat examine strip steel head position interval；Tail part of band steel reaches heat inspection window
Refer to the interval that 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, recover original G roller-way, pinch roll, Wrapping Roll, reel
Component cooling water control logic.
The present invention is switched by component cooling water control logic, and realization can meet the normal refrigerating function of taking-up equipment, and
Coils of hot-rolled steel interlayer surface corrosion can be solved the problems, such as, improves hot-rolled product quality.
The present invention had both met the needs of equipment refrigerating function, solved the problems, such as the corrosion of coils of hot-rolled steel interlayer surface again.
, after the coiling coater use of Taiyuan Iron and Steel Co. hot continuous rolling factory, effect is as follows for the present invention：
（1）Achieving hot continuous rolling taking-up equipment carries out cooling control according to steel grade difference, improves the product quality of variety steel, solution
Determine hot-rolled steel surface corrosion problem；
（2）The refrigerating function of hot continuous rolling taking-up equipment is ensure that, reduces Customer Quality objection again, obtain direct economic benefit every
1,500,000 yuan or so of year.
Description of the drawings
Fig. 1 is G roller-way cooling water control logic chart.
Fig. 2 is pinch roll 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 block, pinch roll cooling water ON/OFF control block, Wrapping Roll are cooled down
Water ON/OFF control block, reel cooling water open and close controlling block, former logic control G roller-way cooling water open order, essence
Roll last frame load OFF signal, former logic control G roller-way cooling water shutdown command, finish rolling end frame load ON signal,
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 roll cooling water shutdown command, former logic control Wrapping Roll cooling
Water opens order, and former logic control Wrapping Roll cooling water turns off 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 embodiment
Implementation process of the present invention is entirely to realize in computer program automatically controlling G roller-way, pinch roll, Wrapping Roll, volume
The opening and closing of cylinder device cooling water.The hot rolling variety steel of easy-to-rust distinguished by strip material code according to sending under second computer,
Then the cooling water opening and closing respectively to G roller-way, pinch roll, Wrapping Roll, reel is controlled.
When material code is easy-to-rust variety steel, all devices cooling water during coil, is closed；After this block steel has been rolled up, 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 numeric ratios of fruit input port are compared with 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 numeric ratios of input port are compared with 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 two inputs of I1, I2 are 1 simultaneously,
Q output result is 1；If it is 0 that I1, I2 two is input into any one for 0, Q output result；
BSW is to select logical block, and X1, X2 are two Boolean type amount input ports, and I is selecting switch, and Q is output port；Elected
When selecting switch I=0, Q is output as X1；When selecting switch I=1, Q is output as X2；
RSR is reset priority logic block, and S is setting switch, and R is reset switch, and Q is output, and QN is that output is negated；When set is opened
When closing S for 1,1 and QN output 0 of Q output；When reset switch R is 1,0 and QN output 1 of Q output；When setting switch S is 1 and answers
When bit switch R is 1, reset switch is preferentially 0 and QN output 1 of Q output；When setting switch S is 0 for 0 and reset switch R, RSR
Logical block output hold mode is constant.
Present invention achieves the steel of rolling whether easy-to-rust is identified by material code, if rolling is easy-to-rust steel
Plant, two integer quantity numeric ratios relatively X1=X2 of NCM_I block input port, then QE is output as 1, when strip reaches finish rolling end frame,
" finish rolling end frame load ON " is that then Q is output as 1 for 1, i.e. the two of AND block input port Boolean quantity I1=1, I2=1；Because BSW is selected
The switch I for selecting block is connected to the QE=1 that NCM_I compares integer quantity logical block, so Q output is X2 port status=1, i.e., now
The reset switch R of RSR block be 1, realize rolling easy-to-rust steel grade when, " finish rolling end frame load ON " signal once connect shutoff G
The cooling water of roller-way；When " finish rolling end frame load OFF ", the setting switch S of RSR block is 1, opens the cooling of G roller-way
Water；If rolling is common variety steel, two integer quantity numeric ratios of NCM_I block input port are not equal to X2 compared with X1, then QE
0 is output as, because the switch I of BSW selection block is connected to the QE=0 that NCM_I compares integer quantity logical block, so Q output is X1 end
Mouthful state, that is, the control logic of former G roller-way cooling water of realizing coming into operation.
Shown in Fig. 2, this programme easy-to-rust variety steel pinch roll cooling water control logical AND G roller-way cooling water control logic
Difference is the signal difference that triggering turned off/opened cooling water：The signal that i.e. triggering of G roller-way cooling water is turned off/opened is " finish rolling end
Frame load ON/OFF "；The signal that triggering pinch roll cooling water is turned off/opened is " strip steel head/afterbody reaches heat inspection window ".
Present invention achieves the steel of rolling whether easy-to-rust is identified by material code, if rolling is easy-to-rust steel
Plant, two integer quantity numeric ratios relatively X1=X2 of NCM_I block input port, then QE is output as 1, when strip steel head reaches coiling machine
Front heat examine in the interval range of strip steel head position, " strip steel head reaches heat inspection window " signal is 1, i.e. AND block input
Then Q is output as 1 to two Boolean quantities I1=1, I2=1 of port；Because the switch I of BSW selection block is connected to NCM_I and compares integer quantity patrol
The QE=1 of block is collected, so Q output is X2 port status=1, i.e., now the reset switch R of RSR block is 1, realizes rolling easy-to-rust
During steel grade, " strip steel head reaches heat inspection window " signal is once the cooling water for connecting shutoff pinch roll；When tail part of band steel reaches volume
Before taking machine, heat inspection inspection is lost in the interval range of tail part of band steel position, and " tail part of band steel reaches heat inspection window " signal is connected, RSR block
Setting switch S is 1, opens the cooling water of pinch roll；If rolling is common variety steel, two of NCM_I block input port
Integer quantity numeric ratio is not equal to X2 compared with X1, then QE is output as 0, compares integer quantity because the switch I of BSW selection block is connected to NCM_I
The QE=0 of logical block, so Q output is X1 port status, that is, realizes the control logic of former pinch roll cooling water of coming into operation.
Wrapping Roll with regard to easy-to-rust variety steel, reel cooling water control logical AND pinch roll control logic are identical, here
Repeat no more.
Claims (1)
1. a kind of improve hot rolling variety steel surface quality control method, it is adaptable to during hot-strip is batched；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 frame load is connected, close G roller-way cooling water；When finish rolling end frame load is turned off, beat
Open G roller-way cooling water；When before coiling machine, " strip steel head reaches heat inspection window " signal closes pinch roll, Wrapping Roll, volume when connecting
Cylinder device cooling water；When before coiling machine, " tail part of band steel reaches heat inspection window " signal opens pinch roll, Wrapping Roll, reel when connecting
Component cooling water；If material code is not equal to easy-to-rust variety steel code, recover original G roller-way, pinch roll, Wrapping Roll,
Reel component cooling water control logic.
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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| 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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| CN106475431A true CN106475431A (en) | 2017-03-08 |
| CN106475431B CN106475431B (en) | 2018-10-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500096A (en) * | 2018-12-03 | 2019-03-22 | 山西太钢不锈钢股份有限公司 | Prevent special steel from batching the control method and its control system of flat volume |
| 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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|---|---|---|---|---|
| CN101690950A (en) * | 2009-07-11 | 2010-04-07 | 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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2016
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101690950A (en) * | 2009-07-11 | 2010-04-07 | 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 |
Non-Patent Citations (2)
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| 宋颍涛: "成功解决冷轧带钢表面"锈斑"的冷轧带钢平整线", 《河南机电高等专科学校学报》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500096A (en) * | 2018-12-03 | 2019-03-22 | 山西太钢不锈钢股份有限公司 | Prevent special steel from batching the control method and its control system of flat volume |
| 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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| Publication number | Publication date |
|---|---|
| CN106475431B (en) | 2018-10-09 |
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