CN108500067A - The plate shape method of adjustment of hot-continuous-rolling strip steel - Google Patents
The plate shape method of adjustment of hot-continuous-rolling strip steel Download PDFInfo
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- CN108500067A CN108500067A CN201810320422.5A CN201810320422A CN108500067A CN 108500067 A CN108500067 A CN 108500067A CN 201810320422 A CN201810320422 A CN 201810320422A CN 108500067 A CN108500067 A CN 108500067A
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- Prior art keywords
- rack
- intermediate base
- adjustment
- camber
- successively
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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
- 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
-
- 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
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2263/00—Shape of product
- B21B2263/04—Flatness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention belongs to steel rolling fields, specifically disclose a kind of plate shape method of adjustment of the hot-continuous-rolling strip steel for the requirement disclosure satisfy that Strip Shape Control.This method will be by that will have the intermediate base of flatness defect to classify, then the flatness defect for being directed to intermediate base carries out camber adjustment using the rack of respective numbers, and the camber regulation of each rack is strictly controlled, plate shape adjustment effect is apparent, reliability is high, disclosure satisfy that the Strip Shape Control requirement of hot continuous rolling production line；Moreover, this method is simple, convenient, without being transformed to existing equipment, without additional economic input, production efficiency and product quality can be effectively improved.
Description
Technical field
The invention belongs to steel rolling fields, and in particular to the Strip Shape Control of hot-continuous-rolling strip steel.
Background technology
The process of hot continuous rolling production line rolled band steel is as follows：Slab is then fed into thick in the heated stove heat in Reheating Furnace Zone
Roll area becomes intermediate base by roughing mill by the slab rolling of heating, then send intermediate base to finish rolling area and is rolled by mm finishing mill unit
For thin plate, thin plate will finally be cooled down in coiling area, band volume is rolled by coiling machine.
But often there is flatness defect in intermediate base supplied materials, generally comprise following four：" S " bending shape as shown in Figure 1,
" C " bending shape, " L " bending shape as shown in Figure 3 and inverted " L " bending shape as shown in Figure 4 as shown in Figure 2；If not in time into
Andante shape adjusts, and easily causes belt plate shape deterioration, or even occur creasing, belt phenomenon.
Currently, the plate shape adjustment for intermediate base does not carry out flatness defect classification processing, but by operative employee by warp
The plate shape situation for judging intermediate base is tested, the roll gap of each rack is artificially adjusted in conjunction with field condition to control the plate shape of strip.It adjusts
Have suffered journey is influenced very big by operative employee's individual factor, and production efficiency can not ensure, and different operative employees is due to skilled journey
The result difference of degree difference, the not first-class factor of working condition, the adjustment of plate shape is larger, cannot meet the requirement of Strip Shape Control.
Invention content
The problem to be solved in the present invention is to provide a kind of plate shape of the hot-continuous-rolling strip steel for the requirement disclosure satisfy that Strip Shape Control
Method of adjustment.
The technical solution adopted by the present invention to solve the technical problems is：The plate shape method of adjustment of hot-continuous-rolling strip steel, is used for
The hot continuous rolling production line of rolled band steel, the hot continuous rolling production line include roughing area and finish rolling area, and the finish rolling area includes finish rolling
Unit；The mm finishing mill unit includes N number of rack, and N number of rack number consecutively is F1~FN, N is the natural number more than or equal to 6；The party
Method includes the following steps：
Step 1 judges the slab structure for the intermediate base being rolled by roughing area；
Intermediate base is sent to finish rolling area and is rolled by mm finishing mill unit by step 2；
Step 3 selects one of following control process to be adjusted into andante shape according to the slab structure of intermediate base：
If a, the slab structure of intermediate base is " S " bending shape, F is controlled1~F4Rack carries out camber tune to intermediate base successively
It is whole, F1~F4Rack is followed successively by 50%, 30%, 10%, 10% to the camber regulation of intermediate base, and controls F4After rack
Rack carries out aligning adjustment to intermediate base；
If b, the slab structure of intermediate base is " C " bending shape, F is controlled1~F5Rack carries out camber tune to intermediate base successively
It is whole, F1~F5Rack is followed successively by 40%, 20%, 20%, 10%, 10% to the camber regulation of intermediate base, and controls F5Rack it
Rack afterwards carries out aligning adjustment to intermediate base；
If c, the slab structure of intermediate base is " L " bending shape, F is controlled1~F3Rack carries out camber tune to intermediate base successively
It is whole, F1~F3Rack is followed successively by 50%, 40%, 10% to the camber regulation of intermediate base, and controls F3Rack pair after rack
Intermediate base carries out aligning adjustment；
If d, the slab structure of intermediate base is inverted " L " bending shape, F is controlled1~F3Rack carries out camber to intermediate base successively
Adjustment, F1~F3Rack is followed successively by 50%, 40%, 10% to the camber regulation of intermediate base, and controls F3Rack after rack
Aligning adjustment is carried out to intermediate base.
Further, in step 3, camber is mainly carried out to intermediate base by the gradient of the roll gap of change rack
Adjustment.
The beneficial effects of the invention are as follows：This method will be by that will have the intermediate base of flatness defect to classify, in being then directed to
Between the flatness defect of base camber adjustment is carried out using the rack of respective numbers, and the camber regulation of each rack is strictly controlled
System, plate shape adjustment effect is apparent, and reliability is high, disclosure satisfy that the Strip Shape Control requirement of hot continuous rolling production line；Moreover, this method is grasped
Make simply, conveniently, without being transformed existing equipment, without additional economic input, production efficiency can be effectively improved
And product quality.
Description of the drawings
Fig. 1 is the intermediate base of " S " bending shape；
Fig. 2 is the intermediate base of " C " bending shape；
Fig. 3 is the intermediate base of " L " bending shape；
Fig. 4 is the intermediate base of inverted " L " bending shape.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
The plate shape method of adjustment of hot-continuous-rolling strip steel is used for the hot continuous rolling production line of rolled band steel, the hot continuous rolling production line
Including roughing area and finish rolling area, the finish rolling area includes mm finishing mill unit；The mm finishing mill unit includes N number of rack, and N number of rack is successively
Number is F1~FN, N is the natural number more than or equal to 6；This method includes the following steps：
Step 1 judges the slab structure for the intermediate base being rolled by roughing area；Before the case where considering milled sheet shape,
It first has to consider that can intermediate base smoothly threading can smoothly enter into downstream rack；
Intermediate base is sent to finish rolling area and is rolled by mm finishing mill unit by step 2；
Step 3 selects one of following control process to be adjusted into andante shape according to the slab structure of intermediate base：
If a, the slab structure of intermediate base is " S " bending shape, F is controlled1~F4Rack carries out camber tune to intermediate base successively
It is whole, F1~F4Rack is followed successively by 50%, 30%, 10%, 10% to the camber regulation of intermediate base, and controls F4After rack
Rack carries out aligning adjustment to intermediate base；In the process, first the head threading of intermediate base is adjusted, after intermediate base tail
Portion is adjusted；To the correction of intermediate blanket shape mainly by F1~F4Rack carries out, F1Rack adjustment amplitude range is larger, but not
Can the plate shape of intermediate base disposably be passed through F1Rack rolling is straight；Remaining rack mainly takes into account the thickness and essence of intermediate base
Degree, for the amplitude of tail portion adjustment as head adjustment amplitude, the time of tail portion adjustment is mainly inclined according to intermediate blanket shape center line
Shifting degree and F1The exit plate deformation of rack and the action of kink judge；
If b, the slab structure of intermediate base is " C " bending shape, F is controlled1~F5Rack carries out camber tune to intermediate base successively
It is whole, F1~F5Rack is followed successively by 40%, 20%, 20%, 10%, 10% to the camber regulation of intermediate base, and controls F5Rack it
Rack afterwards carries out aligning adjustment to intermediate base；In the process, intermediate base adjusts that amplitude is larger end to end, at the middle part of intermediate base two
The roller consumption difference of side tapers into, and is become larger in the two sides of tail roll gap difference of intermediate base；
If c, the slab structure of intermediate base is " L " bending shape, F is controlled1~F3Rack carries out camber tune to intermediate base successively
It is whole, F1~F3Rack is followed successively by 50%, 40%, 10% to the camber regulation of intermediate base, and controls F3Rack pair after rack
Intermediate base carries out aligning adjustment；It is main to consider to it since the head-bent of intermediate base, middle part and tail portion are straight in the process
Head is adjusted, and straight position can carry out specific aim adjustment according to slight plate deformationization in rack, and head adjusts amplitude
Greatly；
If d, the slab structure of intermediate base is inverted " L " bending shape, F is controlled1~F3Rack carries out camber to intermediate base successively
Adjustment, F1~F3Rack is followed successively by 50%, 40%, 10% to the camber regulation of intermediate base, and controls F3Rack after rack
Aligning adjustment is carried out to intermediate base；In the process, since the tail portion bending of intermediate base, head and middle part are straight, main consideration pair
Its tail portion is adjusted, and straight position can carry out specific aim adjustment according to slight plate deformationization in rack, and tail portion adjusts width
Degree is big.
Wherein, camber regulation indicates the adjustment degree to possessed camber on intermediate base.As shown in Figure 1, " S " bending
The intermediate base of shape is in that serpentine or multiple serpentines are first generally with the opposite camber of two or more bending directions
The shape that tail connects；As shown in Fig. 2, the intermediate base of " C " bending shape, generally has a bending radius larger at intermediate position
Camber, that is, be in " C " font；As shown in figure 3, the intermediate base of " L " bending shape, generally in head tool, there are one cambers, that is, are in
" L " font；As shown in figure 4, the intermediate base of inverted " L " bending shape, generally in tail portion tool, there are one cambers, that is, are in inverted " L " font.
In step 3, camber adjustment mainly is carried out to intermediate base to realize by changing the gradient of the roll gap of rack.
The gradient of different roll gap corresponds to different camber regulations.
By this method be applied to rolled band steel hot continuous rolling production line after, then without crease, broken belt phenomena such as generate, to production
The strip gone out is detected, and plate shape good straightness degree meets the Strip Shape Control requirement of hot continuous rolling production line.
Claims (2)
1. the plate shape method of adjustment of hot-continuous-rolling strip steel is used for the hot continuous rolling production line of rolled band steel, the hot continuous rolling production line packet
Roughing area and finish rolling area are included, the finish rolling area includes mm finishing mill unit；The mm finishing mill unit includes N number of rack, and N number of rack is compiled successively
Number be F1~FN, N is the natural number more than or equal to 6；It is characterized in that, this method includes the following steps：
Step 1 judges the slab structure for the intermediate base being rolled by roughing area；
Intermediate base is sent to finish rolling area and is rolled by mm finishing mill unit by step 2；
Step 3 selects one of following control process to be adjusted into andante shape according to the slab structure of intermediate base：
If a, the slab structure of intermediate base is " S " bending shape, F is controlled1~F4Rack carries out camber adjustment to intermediate base successively,
F1~F4Rack is followed successively by 50%, 30%, 10%, 10% to the camber regulation of intermediate base, and controls F4Rack after rack
Aligning adjustment is carried out to intermediate base；
If b, the slab structure of intermediate base is " C " bending shape, F is controlled1~F5Rack carries out camber adjustment to intermediate base successively,
F1~F5Rack is followed successively by 40%, 20%, 20%, 10%, 10% to the camber regulation of intermediate base, and controls F5After rack
Rack aligning adjustment is carried out to intermediate base；
If c, the slab structure of intermediate base is " L " bending shape, F is controlled1~F3Rack carries out camber adjustment to intermediate base successively,
F1~F3Rack is followed successively by 50%, 40%, 10% to the camber regulation of intermediate base, and controls F3Rack centering after rack
Between base carry out aligning adjustment；
If d, the slab structure of intermediate base is inverted " L " bending shape, F is controlled1~F3Rack carries out camber tune to intermediate base successively
It is whole, F1~F3Rack is followed successively by 50%, 40%, 10% to the camber regulation of intermediate base, and controls F3Rack pair after rack
Intermediate base carries out aligning adjustment.
2. the plate shape method of adjustment of hot-continuous-rolling strip steel as described in claim 1, it is characterised in that：In step 3, mainly pass through
The gradient for changing the roll gap of rack to carry out camber adjustment to intermediate base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320422.5A CN108500067B (en) | 2018-04-11 | 2018-04-11 | Strip shape adjusting method for hot continuous rolling strip steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320422.5A CN108500067B (en) | 2018-04-11 | 2018-04-11 | Strip shape adjusting method for hot continuous rolling strip steel |
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| Publication Number | Publication Date |
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| CN108500067A true CN108500067A (en) | 2018-09-07 |
| CN108500067B CN108500067B (en) | 2020-02-04 |
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| CN201810320422.5A Active CN108500067B (en) | 2018-04-11 | 2018-04-11 | Strip shape adjusting method for hot continuous rolling strip steel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453067A (en) * | 2019-09-09 | 2021-03-09 | 重庆钢铁股份有限公司 | Rough rolling plate shape adjusting method |
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| JPS60145210A (en) * | 1984-01-05 | 1985-07-31 | Nippon Steel Corp | Shape controlling method in hot strip rolling |
| US5193066A (en) * | 1989-03-14 | 1993-03-09 | Kabushiki Kaisha Kobe Seiko Sho | Equipment for adjusting the shape of a running band-like or plate-like metal material in the width direction |
| CN1485156A (en) * | 2002-09-28 | 2004-03-31 | 鞍钢集团新钢铁有限责任公司 | Hot-rolled strip steel moderate sea profile shape controlling method |
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| CN104511484A (en) * | 2013-09-26 | 2015-04-15 | 宝山钢铁股份有限公司 | Slight center wave strip-shape control method of hot-rolled strip steel |
| CN104772341A (en) * | 2015-04-28 | 2015-07-15 | 武汉科技大学 | Optimal setting method for bending roller of hot-continuous-rolling finishing mill set |
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Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60145210A (en) * | 1984-01-05 | 1985-07-31 | Nippon Steel Corp | Shape controlling method in hot strip rolling |
| US5193066A (en) * | 1989-03-14 | 1993-03-09 | Kabushiki Kaisha Kobe Seiko Sho | Equipment for adjusting the shape of a running band-like or plate-like metal material in the width direction |
| CN1485156A (en) * | 2002-09-28 | 2004-03-31 | 鞍钢集团新钢铁有限责任公司 | Hot-rolled strip steel moderate sea profile shape controlling method |
| CN101367091A (en) * | 2008-09-28 | 2009-02-18 | 舞阳钢铁有限责任公司 | Control method for plate shape of high-strength steel plate |
| CN101623708A (en) * | 2009-08-05 | 2010-01-13 | 燕山大学 | Plate-shape control integrated system and executing method thereof |
| CN101890435A (en) * | 2010-07-20 | 2010-11-24 | 江苏省沙钢钢铁研究院有限公司 | Automatic convexity and/or wedge control method and system for hot rolling tandem type rolling mill |
| CN102145348A (en) * | 2010-12-30 | 2011-08-10 | 安阳钢铁股份有限公司 | Sheet shape control technology used in hot strip rolling of super-wide sheets |
| CN103962391A (en) * | 2013-01-29 | 2014-08-06 | 宝山钢铁股份有限公司 | Rolling load optimization method for hot continuous finishing mill group |
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| CN104209340A (en) * | 2013-05-31 | 2014-12-17 | 宝山钢铁股份有限公司 | Bilateral wave control method for hot-rolled martensitic stainless steel strip steel |
| CN103406365A (en) * | 2013-08-27 | 2013-11-27 | 中冶南方工程技术有限公司 | Cold rolling band steel plate shape intelligent optimization control method |
| CN104511484A (en) * | 2013-09-26 | 2015-04-15 | 宝山钢铁股份有限公司 | Slight center wave strip-shape control method of hot-rolled strip steel |
| CN104772341A (en) * | 2015-04-28 | 2015-07-15 | 武汉科技大学 | Optimal setting method for bending roller of hot-continuous-rolling finishing mill set |
| CN106914495A (en) * | 2015-12-25 | 2017-07-04 | 宝山钢铁股份有限公司 | A kind of hot-strip camber control method and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112453067A (en) * | 2019-09-09 | 2021-03-09 | 重庆钢铁股份有限公司 | Rough rolling plate shape adjusting method |
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