CN104324939A - Strip steel rolling method - Google Patents
Strip steel rolling method Download PDFInfo
- Publication number
- CN104324939A CN104324939A CN201410448262.4A CN201410448262A CN104324939A CN 104324939 A CN104324939 A CN 104324939A CN 201410448262 A CN201410448262 A CN 201410448262A CN 104324939 A CN104324939 A CN 104324939A
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- frame
- rolling
- strip steel
- steel
- roll
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 238000005096 rolling process Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009966 trimming Methods 0.000 claims description 24
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- 241000931705 Cicada Species 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a strip steel rolling method, which comprises the following steps of firstly determining parameters of strip steel; then setting the rolling force of each frame in the frame group according to the parameters of the strip steel; then setting the lifting amount of the roll gap of each frame when the strip steel passes through the welding seam; and finally, rolling the strip steel according to the rolling force of each rack and the lifting amount of the roll gap of each rack. Therefore, the expected target of the balance of the rolling force of each rack can be achieved through the load distribution of each rack and the adjustment of unit tension, the total rolling power is obviously reduced and is only 87.43% of the total power consumption of the original regulation, the purposes of reducing energy consumption and improving economic benefit under the condition of reasonably utilizing rolling equipment are achieved, meanwhile, the optimized CVC roll shifting amplitude is also obviously reduced, the occurrence of accidents such as roll pulling, strip breakage and the like is favorably reduced, and the quality of finished strip steel is improved on the basis of ensuring the stable production.
Description
Technical field
The application relates to steel rolling field, particularly relates to a kind of belt steel rolling method.
Background technology
Since the operation of product line is rolled in acid, when producing high-strength steel and thin gauge strip, high-strength steel rolling sideslip and broken belt situation happen occasionally, resolve not thorough to second-level model, site problems is caused not have method to solve, such as: high-strength steel mill speed is lower, pressure unreasonable distribution, milling train setting tension force is lower, rolling power consumption is larger, roll shifting distance, deformed steel strip length is long etc., these problems finally can cause the strip quality rolled out not met customer need, have impact on the stable supply of material to high-end user on the one hand, even if client can accept on the one hand, also can impact the image of enterprise itself.In addition, broken belt and sideslip also can affect rhythm of production, cause shutdown, thus affect rolling mill yield, and then affect the profit of company.
Summary of the invention
Invention provides a kind of belt steel rolling method, with solve the strip quality rolled out poor, yield poorly, and then the technical problem of not meeting customer need.
For solving the problems of the technologies described above, the invention provides a kind of belt steel rolling method, be applied to belt steel rolling model, described method comprises: the parameter determining described band steel; According to the parameter of described band steel, the roll-force of each frame in frame group is set; The Uplifting amount of described each frame roll gap when weld seam crossed by described band steel is set; According to the roll-force of described each frame and the Uplifting amount of described each frame roll gap, described in rolling, be with steel.
Preferably, the parameter of described band steel specifically comprises: strip width or belt steel thickness.
Preferably, the described parameter determining described band steel, is specially: judge the whether trimming of described band steel; If the trimming of described band steel, using the strip width after trimming as described strip width.
Preferably, the described parameter according to described band steel, arranges the roll-force of each frame in frame group, is specially: according to the thickness of described band steel, arranges the power division of described each frame and the unit tension of each frame.
By one or more technical scheme of the present invention, the present invention has following beneficial effect or advantage:
First the present invention determines the parameter being with steel; Then according to the parameter of band steel, the roll-force of each frame in frame group is set; The Uplifting amount of each frame roll gap when weld seam crossed by band steel is set again; Last according to the roll-force of each frame and the Uplifting amount of each frame roll gap, rolled band steel.Therefore, the sharing of load of each frame and the adjustment of unit tension can be passed through, reach the re-set target of each frame roll-force equilibrium, and total rolling power obviously reduces, be only 87.43% of original code total consumed power, serve the object reducing energy consumption under the condition of Appropriate application rolling equipment, increase economic efficiency, CVC roll shifting amplitude after simultaneously optimizing also obviously reduces, be conducive to reducing the generation of strangling the accident such as roller, broken belt, on the basis ensureing administration measure, improve the quality of finished strip.
In addition, rolling parameter of the present invention calculates can according to band steel developed width, not by the impact of trimming with not trimming, fundamentally solve in raw material not trimming situation, the setting width of milling train uses finished width and causes the problem of roll shifting, splash-back width, ASC control, rolling procedure basis of design mistake, the program of have adjusted makes milling train working control width can whether trimming determines according to end trimming shears, improves the precision of Strip Shape Control.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of belt steel rolling method in the embodiment of the present invention.
Detailed description of the invention
In order to make the application the technical staff in the technical field more clearly understand the application, below in conjunction with accompanying drawing, by specific embodiment, technical scheme is described in detail.
Embodiment 1:
In embodiments of the present invention, a kind of belt steel rolling method is disclosed.
The method is applied particularly to belt steel rolling model, and this model relates to high-strength steel secondary setting tension optimization; High-strength steel second-level model rolling strategy is optimized; High-strength steel and Thin Specs auto lifting roll gap technology; Power setting is rolled according to developed width change.
Please refer to Fig. 1, in concrete implementation process, the flow process of belt steel rolling method is as follows:
S1, determines the parameter being with steel.
Specifically, band steel parameter comprises multiple, such as strip width, belt steel thickness, strip length etc.
When determining strip width, determining to be with the parameter of steel, being specially: judge to be with steel whether trimming; If the trimming of band steel, using the strip width after trimming as strip width.
During rolling force setup width calculation, not trimming product is rolled for acid, automatic program identification raw material width, in not trimming situation, prevent the setting width of milling train from using finished width, cause the width setting of roll shifting, splash-back width, ASC control, rolling procedure basis of design mistake like this, improve to make milling train working control width can whether trimming determines according to end trimming shears from program, avoid Yin Qiebian and not trimming to affect and calculate accuracy, improve the precision of Strip Shape Control.
S2, according to the parameter of band steel, arranges the roll-force of each frame in frame group.
In concrete implementation process, according to the thickness of band steel, the power division (i.e. sharing of load) of each frame and the unit tension of each frame are set.
Such as, for the high-strength steel strip of finished product thickness h≤1.2mm, please refer to table 1 and table 2.
Table 1
| Frame | 1st | 2st | 3st | 4st |
| Sharing of load | 110 | 100 | 100 | 90 |
Table 2
| Frame | entry | 1-2st | 2-3st | 3-4st | 4-5st | exit |
| Unit tension | 110 | 130 | 130 | 130 | 140 | 100 |
For the high-strength steel strip of finished product thickness h > 1.2mm, please refer to table 3 and table 4.
Table 3
| Frame | 1st | 2st | 3st | 4st |
| Sharing of load | 110 | 100 | 100 | 90 |
Table 4
| Frame | entry | 1-2st | 2-3st | 3-4st | 4-5st | exit |
| Unit tension | 110 | 140 | 140 | 140 | 150 | 100 |
The control of mill milling strategy, ensureing under the prerequisite that rolling target thickness is identical with rhythm of production, by the sharing of load of each frame and the adjustment of unit tension, reach the re-set target of each frame roll-force equilibrium, and total rolling power obviously reduces, be only 87.43% of original code total consumed power, serve and reduce energy consumption under the condition of Appropriate application rolling equipment, the object of increasing economic efficiency, CVC roll shifting amplitude after simultaneously optimizing also obviously reduces, be conducive to minimizing and strangle roller, the generation of the accidents such as broken belt, on the basis ensureing administration measure, improve the quality of finished strip.Studied by above model, we are optimized the second-level model of producing line, improve the kind rolling stabilities such as high-strength steel, reduce broken belt, improve Strip Shape Control ability, improve mill speed.
S3, arranges the Uplifting amount of each frame roll gap when weld seam crossed by band steel.
In concrete implementation process, when rolled band steel, the steel grade connecing other hardness after may appearing at rolling high-strength steel low is rolled, and when high-strength steel connects the low steel grade of other hardness, increases each frame and automatically subtracts roll-force function.Such as: during 1# frame FGC, 1# frame from the △ S of present segment-changeover portion new=former+150 μm of △ S.During 2# frame FGC, 2# frame from the △ S of present segment-changeover portion new=former+150 μm of △ S.During 3# frame FGC, 3# frame from the △ S of present segment-changeover portion new=former+100 μm of △ S.During 4# frame FGC, 4# frame from the △ S of present segment-changeover portion new=former+100 μm of △ S.For another example: as 1# frame FGC, roll gap increases 1# frame roll gap Uplifting amount Δ S from current value becomes transition numerical value, and other 2#, 3#, 4# frame function is identical.The target of the Uplifting amount optimization of each frame roll gap increases belt steel thickness near weld seam, avoids thinning broken belt.
S4, according to the roll-force of each frame and the Uplifting amount of each frame roll gap, rolled band steel.
By one or more embodiment of the present invention, the present invention has following beneficial effect or advantage:
The present invention is by the sharing of load of each frame and the adjustment of unit tension, reach the re-set target of each frame roll-force equilibrium, and total rolling power obviously reduces, be only 87.43% of original code total consumed power, serve the object reducing energy consumption under the condition of Appropriate application rolling equipment, increase economic efficiency, CVC roll shifting amplitude after simultaneously optimizing also obviously reduces, be conducive to reducing the generation of strangling the accident such as roller, broken belt, on the basis ensureing administration measure, improve the quality of finished strip.
The rolling parameter that the invention solves calculates can according to band steel developed width, not by the impact of trimming with not trimming, fundamentally solve in raw material not trimming situation, the setting width of milling train uses finished width and causes the problem of roll shifting, splash-back width, ASC control, rolling procedure basis of design mistake, the program of have adjusted makes milling train working control width can whether trimming determines according to end trimming shears, improves the precision of Strip Shape Control.
Although described the preferred embodiment of the application, one of ordinary skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the application's scope.
Obviously, those skilled in the art can carry out various change and modification to the application and not depart from the spirit and scope of the application.Like this, if these amendments of the application and modification belong within the scope of the application's claim and equivalent technologies thereof, then the application is also intended to comprise these change and modification.
Claims (4)
1. a belt steel rolling method, is applied to belt steel rolling model, it is characterized in that, described method comprises:
Determine the parameter of described band steel;
According to the parameter of described band steel, the roll-force of each frame in frame group is set;
The Uplifting amount of described each frame roll gap when weld seam crossed by described band steel is set;
According to the roll-force of described each frame and the Uplifting amount of described each frame roll gap, described in rolling, be with steel.
2. the method for claim 1, is characterized in that, the parameter of described band steel specifically comprises: strip width or belt steel thickness.
3. method as claimed in claim 2, it is characterized in that, the described parameter determining described band steel, is specially:
Judge the whether trimming of described band steel;
If the trimming of described band steel, using the strip width after trimming as described strip width.
4. method as claimed in claim 2, it is characterized in that, the described parameter according to described band steel, arranges the roll-force of each frame in frame group, is specially:
According to the thickness of described band steel, the power division of described each frame and the unit tension of each frame are set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410448262.4A CN104324939B (en) | 2014-09-04 | 2014-09-04 | Strip steel rolling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410448262.4A CN104324939B (en) | 2014-09-04 | 2014-09-04 | Strip steel rolling method |
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| CN104324939A true CN104324939A (en) | 2015-02-04 |
| CN104324939B CN104324939B (en) | 2017-10-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106552826A (en) * | 2015-09-30 | 2017-04-05 | 上海梅山钢铁股份有限公司 | Hot-tandem unit roll shifting control method |
| CN107900101A (en) * | 2017-10-26 | 2018-04-13 | 首钢京唐钢铁联合有限责任公司 | Rolling method for reducing edge crack of continuous rolling mill |
| CN110170535A (en) * | 2019-06-11 | 2019-08-27 | 首钢京唐钢铁联合有限责任公司 | Automatic control method for welding seam passing rolling force of galvanizing skin pass mill |
| CN114798753A (en) * | 2022-04-21 | 2022-07-29 | 宝钢湛江钢铁有限公司 | Automatic rolling method for weak-strength welding seam of continuous mill |
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| US6119500A (en) * | 1999-05-20 | 2000-09-19 | Danieli Corporation | Inverse symmetrical variable crown roll and associated method |
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2014
- 2014-09-04 CN CN201410448262.4A patent/CN104324939B/en active Active
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| US6119500A (en) * | 1999-05-20 | 2000-09-19 | Danieli Corporation | Inverse symmetrical variable crown roll and associated method |
| KR100832971B1 (en) * | 2006-12-05 | 2008-05-27 | 주식회사 포스코 | Method for controlling bender power of rolling roll in continuous rolling equipment |
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Non-Patent Citations (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106552826A (en) * | 2015-09-30 | 2017-04-05 | 上海梅山钢铁股份有限公司 | Hot-tandem unit roll shifting control method |
| CN107900101A (en) * | 2017-10-26 | 2018-04-13 | 首钢京唐钢铁联合有限责任公司 | Rolling method for reducing edge crack of continuous rolling mill |
| CN110170535A (en) * | 2019-06-11 | 2019-08-27 | 首钢京唐钢铁联合有限责任公司 | Automatic control method for welding seam passing rolling force of galvanizing skin pass mill |
| CN110170535B (en) * | 2019-06-11 | 2020-11-20 | 首钢京唐钢铁联合有限责任公司 | Automatic control method for welding seam passing rolling force of galvanizing skin pass mill |
| CN114798753A (en) * | 2022-04-21 | 2022-07-29 | 宝钢湛江钢铁有限公司 | Automatic rolling method for weak-strength welding seam of continuous mill |
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| CN104324939B (en) | 2017-10-10 |
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