CN104438356B - A kind of method for improving Thin container plate edge shape wave - Google Patents
A kind of method for improving Thin container plate edge shape wave Download PDFInfo
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- CN104438356B CN104438356B CN201410492214.5A CN201410492214A CN104438356B CN 104438356 B CN104438356 B CN 104438356B CN 201410492214 A CN201410492214 A CN 201410492214A CN 104438356 B CN104438356 B CN 104438356B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 230000000903 blocking effect Effects 0.000 claims abstract description 14
- 230000011664 signaling Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 16
- 230000002146 bilateral effect Effects 0.000 abstract description 12
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000277275 Oncorhynchus mykiss Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Heat Treatment Processes (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a kind of method for improving Thin container plate edge shape wave, belongs to steel rolling process technical field.The method for improving Thin container plate edge shape wave includes for strip edge heater being arranged on finishing mill entrance, for heating to two side portion of middle base；Strip edge heater heating-up temperature is controlled by automation control system；Will edge-masking device be set, for controlling the cooling position of steel edge portion on section cooling collector；The blocking position of edge-masking device is controlled by automation control system.The present invention improves the method for Thin container plate edge shape wave and can be effectively improved the bilateral unrestrained problem for rolling that rear finished product is present, and improves product strip shape quality, improves product lumber recovery.
Description
Technical field
The present invention relates to steel rolling process technical field, more particularly to a kind of side for improving Thin container plate edge shape wave
Method.
Background technology
Move steel 1580mm rolling lines to be mainly with silicon steel, Thin container plate as main product, wherein Thin Specs container
Plate will realize batch steady production in the end of the year 2009, and based on client to product strip shape quality, especially the high request of bilateral wave, produces
Product strip shape quality is continuously improved as tackling key problem emphasis always.In order to improve product strip shape quality, and other steel mills
Equally, move steel be also using rolling line production after, then carry out the smooth improving strip shape quality of certain reduction ratio in smooth operation.Gently
Micro- bilateral unrestrained problem once can be effectively improved in smooth operation, once all cannot be complete but serious bilateral wave is smooth
Totally disappeared and remove, need it is smooth twice, even three times eliminating, this not only constrains the lifting of planisher production capacity, and in smooth mistake
Inevitably cause certain wiping to scratch in journey and cut damage, seriously reduce the lumber recovery of product.
In prior art, rolling line does not have coiled sheet case, and coiled sheet case can be effectively improved middle base head and tail temperature uniformity, together
The rolling stability of Shi Tigao strips afterbody in finishing mill.This becomes the difficult point for moving that steel produces Thin container plate in batches
It is located, in order to make up the middle base head and tail temperature homogeneity question caused without coiled sheet case, while shortening rolling time as best one can, carries
High tail part of band steel final rolling temperature, moves steel and has carried out a kind of special process system：High finishing temperature+low coiling temperature, that is, pass through
High finishing temperature shortens rolling time improving milling train power acceleration；But the another question so brought is then to produce
The plate shape problem of product：Generally as strip steel head finishing temperature is relatively low in rolling line production process, so same reaching
Coiling temperature when, it is few that the cold collector of head layer starts number；And with the increase of mill length, finishing temperature gradually rises,
In the case of same coiling temperature, the cold cooling manifold of layer is opened quantity and is dramatically increased, and intensity of cooling is increased, and causes steel edge portion with
The temperature difference in portion is increased, and thus brings horizontal internal stress problem.Can then form significantly bilateral during treating follow-up uncoiling use
Wave, affects client's plate shape to use.
The content of the invention
The technical problem to be solved is to provide a kind of being effectively improved and rolls the bilateral wave that rear finished product is present and ask
Topic, improves product strip shape quality, improves the method for improving Thin container plate edge shape wave of product lumber recovery.
To solve above-mentioned technical problem, the invention provides a kind of method for improving Thin container plate edge shape wave,
Finishing mill entrance is arranged on including by strip edge heater, for heating to two side portion of middle base；By Automated condtrol
System controls the heating-up temperature of strip edge heater；Will edge-masking device be set, for controlling steel edge portion on section cooling collector
Cooling position；The blocking position of edge-masking device is controlled by automation control system.
Further, the heating-up temperature for controlling strip edge heater by automation control system is included under three-stage control system
Mark input strip edge heater in the PDI for sending out.
Further, in the PDI that three-stage control system is issued, mark input strip edge heater is included strip steel grade and rule
Lattice data is activation to second control system, what second control system was configured according to strip steel grade, specification and in second databases
The target component of Thin container plate be calculated strip edge heater setting two side portion of middle base heating power, two grades
The heating power signal of setting is sent to first class control system by control system, and heating power signal is sent by first class control system
Primary PLC control system is given, the heating work(of two side portion of middle base that second control system is set by primary PLC control system
Rate, middle base length, actual speed calculate actually required power in real time, and actually required power is converted into voltage is sent to
The driving control system of strip edge heater, driving control system are then heated according to voltage.
Further, the blocking position for controlling edge-masking device by automation control system is included under three-stage control system
The flag bit of mark input edge-masking in the PDI for sending out.
Further, in the PDI that three-stage control system is issued, the flag bit of mark input edge-masking is included strip steel
Plant and specification data is sent to second control system, the strip steel that second control system Auto-matching is configured in second databases
The position with the corresponding edge-masking of specification is planted, the edge-masking position signalling of setting is sent to one-level control system by level two
Edge-masking position signalling is sent to primary PLC control system by system, first class control system, and primary PLC control system will set
Edge-masking position signalling be sent to edge-masking device.
Strip edge heater is first arranged on by a kind of method of improvement Thin container plate edge shape wave that the present invention is provided
Finishing mill entrance, for heating to two side portion of middle base, controls adding for strip edge heater by automation control system
Hot temperature, will arrange edge-masking device, for controlling the cooling position of steel edge portion, by automating control on section cooling collector
System processed controls the blocking position of edge-masking device, by improving edge temperature, reduces transverse temperature difference, improves horizontal internal stress not
Such that it is able to be effectively improved the bilateral unrestrained problem for rolling that rear finished product is present, improve product strip shape quality, improve product lumber recovery.
Description of the drawings
Fig. 1 is the flow chart of the method for improving Thin container plate edge shape wave provided in an embodiment of the present invention.
Specific embodiment
Strip edge heater is first arranged on by a kind of method of improvement Thin container plate edge shape wave that the present invention is provided
Finishing mill entrance, for heating to two side portion of middle base, controls adding for strip edge heater by automation control system
Hot temperature, will arrange edge-masking device, for controlling the cooling position of steel edge portion, by automating control on section cooling collector
System processed controls the blocking position of edge-masking device, by improving edge temperature, reduces transverse temperature difference, improves horizontal internal stress not
Such that it is able to be effectively improved the bilateral unrestrained problem for rolling that rear finished product is present, improve product strip shape quality, improve product lumber recovery.
Referring to Fig. 1, a kind of method for improving Thin container plate edge shape wave provided in an embodiment of the present invention, including：
Step 110：Strip edge heater is arranged on into finishing mill entrance, for heating to two side portion of middle base；
Step 120：The heating-up temperature of strip edge heater is controlled by automation control system；
Step 130：Will edge-masking device be set, for controlling the cooling position of steel edge portion on section cooling collector；
Step 140：The blocking position of edge-masking device is controlled by automation control system.
The embodiment of the present invention is introduced in order to clearer, is explained from each step below.
Step 110：Strip edge heater is arranged on into finishing mill entrance, for heating to two side portion of middle base；
Step 120：The heating-up temperature of strip edge heater is controlled by automation control system；
Specifically, step 120 includes mark input strip edge heater in the PDI that three-stage control system is issued；Three-level control
In the PDI that system processed is issued, mark input strip edge heater includes strip steel grade and specification data being sent to Two-stage control system
System, the target ginseng of the Thin container plate that second control system is configured according to strip steel grade, specification and in second databases
Number is calculated the heating power of two side portion of middle base of strip edge heater setting, the heating work(that second control system will set
Rate signal is sent to first class control system, and heating power signal is sent to primary PLC control system, one-level by first class control system
The heating power of two side portion of middle base that second control system is set by PLC control system, middle base length, actual speed reality
When calculate actually required power, and actually required power is converted into into the transmission control system that voltage is sent to strip edge heater
System, driving control system are then heated according to voltage.
Step 130：Will edge-masking device be set, for controlling the cooling position of steel edge portion on section cooling collector.
Step 140：The blocking position of edge-masking device is controlled by automation control system；
Specifically, step 140 includes the flag bit of mark input edge-masking in the PDI that three-stage control system is issued；
In the PDI that three-stage control system is issued mark input edge-masking flag bit include by strip steel grade and specification data send to
Second control system, strip steel grade and the corresponding edge of specification that second control system Auto-matching is configured in second databases
The edge-masking position signalling of setting is sent to first class control system by the position blocked, level two, and first class control system will
Edge-masking position signalling is sent to primary PLC control system, the edge-masking position signalling that primary PLC control system will set
It is sent to edge-masking device.
Embodiment two
The embodiment of the present invention is introduced in order to clearer, is situated between from the specific embodiment of the embodiment of the present invention below
Continue.
1) for Thin Specs container place steel grade and specification, the mark input strip edge heater in the PDI that three-level is issued,
Strip steel grade and specification data are sent to second control system, second control system is according to strip steel grade, specification and at two grades
The target component of the Thin container plate configured in database is calculated two side portion of middle base of strip edge heater setting
Heating power, target component includes heating-up temperature, workpiece thickness and firing rate, the heating that second control system will set
Power signal is sent to first class control system, and heating power signal is sent to primary PLC control system by first class control system, and one
The heating power of two side portion of middle base that second control system is set by level PLC control system, middle base length, actual speed
Actually required power is calculated in real time, and actually required power is converted into into the transmission control system that voltage is sent to strip edge heater
System, driving control system are then heated according to voltage, and primary PLC control system and driving control system then enter side in strip
Two grades of setting values are received before portion's heater, and starts Edge Heating after strip enters into strip edge heater：
The head heating-up temperature being currently set and Tail-heating temperature are respectively 120 degree, and strip passes through strip edge heater
Afterwards, compare when not putting into, edge temperature can improve 15-25 degree or so.
2) steel grade being located for Thin container plate and specification, in the PDI that three-level is issued, mark input edge hides
The flag bit of gear, strip steel grade and specification data are sent to second control system, and second control system meeting Auto-matching is prior
The position of the steel grade configured in second databases and the corresponding edge-masking of specification, the edge that second control system will set
Blocking position signal is sent to first class control system, and edge-masking position signalling is sent to primary PLC control by first class control system
The edge-masking position signalling of setting is sent to edge-masking device by system processed, primary PLC control system.For the steel grade being located
Race, sets the blocking position of edge-masking as 200mm, i.e., edge 200mm is all without cold but by layer.Why edge is set
200mm, is because having ever done the test for blocking 100mm, 150mm, and the improvement of discovery bilateral wave when blocking few is not
Substantially, 200mm then effect is significants are adopted.Edge temperature 15-25 degree or so can be improved by putting into edge-masking.
On the whole, while 30 degree or so of edge temperature can be improved when putting into strip edge heater and edge-masking, effectively
Improve the cross section temperature difference and bilateral unrestrained problem.
Table 1 moves the secondary smooth rate of steel hot rolling 1580mm rolling lines
By the enforcement of above-mentioned measure, move the bilateral unrestrained problem of steel hot rolling 1580mm rolling line Thin container plates and be able to effectively
Improve, as shown in table 1, in November, 2013 comes into effect concrete data, and the secondary smooth rate of the first two months is contrasted therewith, can be with
Find out, after measure is implemented, secondary smooth rate is substantially reduced.
In sum, a kind of method for improving Thin container plate edge shape wave provided in an embodiment of the present invention has such as
Lower technique effect：
Strip edge heater is first arranged on by a kind of method of improvement Thin container plate edge shape wave that the present invention is provided
Finishing mill entrance, for heating to two side portion of middle base, controls adding for strip edge heater by automation control system
Hot temperature, will arrange edge-masking device, for controlling the cooling position of steel edge portion, by automating control on section cooling collector
System processed controls the blocking position of edge-masking device, by improving edge temperature, reduces transverse temperature difference, improves horizontal internal stress not
Such that it is able to be effectively improved the bilateral unrestrained problem for rolling that rear finished product is present, improve product strip shape quality, improve product lumber recovery.
It should be noted last that, above specific embodiment only to illustrate technical scheme and unrestricted,
Although being described in detail to the present invention with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent, without deviating from the spirit and scope of technical solution of the present invention, which all should be covered
In the middle of scope of the presently claimed invention.
Claims (3)
1. a kind of method for improving Thin container plate edge shape wave, it is characterised in that include：
Strip edge heater is arranged on into finishing mill entrance, for heating to two side portion of middle base；
The heating-up temperature of strip edge heater is controlled by automation control system；Edge Heating is controlled by automation control system
The temperature of device heating includes mark input strip edge heater in the PDI that three-stage control system is issued, what three-stage control system was issued
In PDI, mark input strip edge heater includes strip steel grade and specification data being sent to second control system, Two-stage control system
The target component of the Thin container plate that system is configured according to strip steel grade, specification and in second databases is calculated edge
The heating power signal of setting is sent to one by the heating power of two side portion of middle base of heater setting, second control system
Heating power signal is sent to primary PLC control system by level control system, first class control system, and primary PLC control system will
The heating power of two side portion of middle base of second control system setting, middle base length, actual speed calculate actual institute in real time
The power for needing, and actually required power is converted into into the driving control system that voltage is sent to strip edge heater, transmission control system
System is then heated according to voltage；
Will edge-masking device be set, for controlling the cooling position of steel edge portion on section cooling collector；
The blocking position of edge-masking device is controlled by automation control system.
2. the method for improving Thin container plate edge shape wave according to claim 1, it is characterised in that：By automatic
The blocking position of networked control systems control edge-masking device includes mark input edge-masking in the PDI that three-stage control system is issued
Flag bit.
3. the method for improving Thin container plate edge shape wave according to claim 2, it is characterised in that：Three class control
In the PDI that system is issued, the flag bit of mark input edge-masking includes strip steel grade and specification data being sent to Two-stage control
System, strip steel grade and the position of the corresponding edge-masking of specification that second control system Auto-matching is configured in second databases
Put, the edge-masking position signalling of setting is sent to first class control system by level two, first class control system is by edge-masking
Position signalling is sent to primary PLC control system, and the edge-masking position signalling of setting is sent to side by primary PLC control system
Portion's blocker.
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| CN201410492214.5A CN104438356B (en) | 2014-09-23 | 2014-09-23 | A kind of method for improving Thin container plate edge shape wave |
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| CN201410492214.5A CN104438356B (en) | 2014-09-23 | 2014-09-23 | A kind of method for improving Thin container plate edge shape wave |
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| CN104438356B true CN104438356B (en) | 2017-04-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106734249B (en) * | 2016-11-07 | 2018-11-02 | 北京首钢股份有限公司 | A kind of detection method of side defects of strip steel position |
| CN110270598A (en) * | 2019-07-10 | 2019-09-24 | 鞍钢股份有限公司 | Laminar cooling edge shielding device and control method |
| CN110860565B (en) * | 2019-10-13 | 2022-06-07 | 河钢股份有限公司 | Method for accurately realizing symmetrical shielding of strip steel edge |
| CN114011885B (en) * | 2021-10-13 | 2023-08-29 | 邯郸钢铁集团有限责任公司 | Plate shape control method for rolling process of GPa-grade hot-rolled high-strength steel |
| CN114713639B (en) * | 2022-03-25 | 2024-08-23 | 北京科技大学设计研究院有限公司 | Control system of shielding device |
| CN115016578B (en) * | 2022-08-08 | 2022-10-18 | 太原科技大学 | Strip steel quality regulation and control method based on edge temperature control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60166117A (en) * | 1984-02-09 | 1985-08-29 | Kawasaki Steel Corp | Cooling method of high temperature steel sheet |
| JP3215327B2 (en) * | 1995-07-10 | 2001-10-02 | 川崎製鉄株式会社 | Continuous hot finish rolling method for steel strip |
| US6615633B1 (en) * | 1999-11-18 | 2003-09-09 | Nippon Steel Corporation | Metal plateness controlling method and device |
| CN101780478B (en) * | 2009-01-21 | 2012-07-04 | 中冶赛迪工程技术股份有限公司 | Method and device for controlling strip shape and precision of hot rolling steel strips and plates |
| CN101502849B (en) * | 2009-03-19 | 2011-12-21 | 东北大学 | Medium plate laminar cooling chain edge part shading device control method |
| CN102481610B (en) * | 2009-12-16 | 2014-08-06 | 新日铁住金株式会社 | cooling method for hot-rolled sheet steel |
| CN103990651B (en) * | 2013-02-19 | 2016-02-24 | 宝山钢铁股份有限公司 | A kind of control device for thin broadband steel high order limit wave and control method thereof |
| CN103302110B (en) * | 2013-06-20 | 2015-06-10 | 济钢集团有限公司 | Feedforward control method for laminar flow cooling edge part shielding device of wide and thick plate |
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