CN105080969B - The lamination straightening process that a kind of limit Thin Specs cut deal bilateral wave wooden dipper is bent - Google Patents
The lamination straightening process that a kind of limit Thin Specs cut deal bilateral wave wooden dipper is bent Download PDFInfo
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- CN105080969B CN105080969B CN201510524962.1A CN201510524962A CN105080969B CN 105080969 B CN105080969 B CN 105080969B CN 201510524962 A CN201510524962 A CN 201510524962A CN 105080969 B CN105080969 B CN 105080969B
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Abstract
The invention discloses the lamination straightening process that a kind of limit Thin Specs cut deal bilateral wave wooden dipper is bent, I-shaped liner plate is overlayed and treats to align together above straightening plate, the central region making steel plate width direction produces tension force in straightening process, increase the elastic deformation amount of the central region center thickness layer in steel plate width direction, realize effective aligning that limit Thin Specs cut deal bilateral wave wooden dipper is bent, make including liner plate；By I-shaped liner plate and treat that straightening plate aligns；First passage aligning, amount of plastic deformation selection 80%, the second passage aligning, amount of plastic deformation selects 60%.This technique is taked I-shaped liner plate to overlay to treat to align together above straightening plate, the central region making steel plate width direction produces tension force in straightening process, increase the elastic deformation amount of the central region center thickness layer in steel plate width direction, finally realize effective aligning that limit Thin Specs cut deal bilateral wave wooden dipper is bent.
Description
Technical field
The invention belongs to steel rolling field, relate to the lamination straightening process that a kind of limit Thin Specs cut deal bilateral wave wooden dipper is bent.
Background technology
For adapting to iron and steel downstream user light-weight design needs, Heavy Plate Production factory passes through technological innovation, does not turns off and sends thickness more
Thin steel plate.Being limited by milling train plant equipment and Automated condtrol ability, with the reduction of rolled piece thickness, the convexity of steel plate is difficult to
Accurately control, often occurs in the operation of rolling that bilateral wave wooden dipper is bent (as shown in Figure 1), and this type of wooden dipper bent plate shape relies primarily on follow-up cold strong
Straight operation is improved.
If wooden dipper bent plate uses plain-barreled roll cannot realize effectively aligning, it will usually makes working roll occur bending and deformation by Bending compensation, makes
Steel plate local in straightening process introduces tension force, it is achieved belt tension is aligned, and improves leveling effect with this.The steel plate that thickness is thick needs
Bending compensation amount little, leveling effect is obvious, but the thin steel plate of thickness needs bigger Bending compensation just can tell on.Bigger
Bending compensation cause working roller of straightening machine and supporting roller bearing discontinuity degree to strengthen, cause bearing to shorten service life,
Even producing broken bearing phenomenon, affect rhythm of production, therefore, the actually used Bending compensation amount of straightener needs to be limited in one
Use in fixed scope, cause limit Thin Specs cut deal that conventional straightening process cannot be utilized effectively to be aligned.
Summary of the invention
It is an object of the invention to provide the lamination straightening process that a kind of limit Thin Specs cut deal bilateral wave wooden dipper is bent, this technique takes work
Font liner plate overlays to be treated to align together above straightening plate, makes the central region in steel plate width direction produce in straightening process
Tension force, increases the elastic deformation amount of the central region center thickness layer in steel plate width direction, finally realizes limit Thin Specs cut deal
Effective aligning that bilateral wave wooden dipper is bent.
The purpose of the present invention is achieved through the following technical solutions:
The lamination straightening process that a kind of limit Thin Specs cut deal bilateral wave wooden dipper is bent, it is characterised in that: this technique is by I-shaped liner plate
Overlay and treat to align together above straightening plate, make the central region in steel plate width direction produce tension force in straightening process, increase
Add the elastic deformation amount of the central region center thickness layer in steel plate width direction, it is achieved limit Thin Specs cut deal bilateral wave wooden dipper song
Effectively aligning, specifically comprises the following steps that
1) liner plate makes: choosing liner plate, liner plate length ratio treats that straightening plate long 0～600mm, width are identical with treating straightening plate, thick
Liner plate edge, more than 4mm, is cut away by degree, and the central region residue width of width is 300～1000mm, residue length end to end
It is 400～700mm, makes I-shaped liner plate；
2) will treat that straightening plate handling, to straightener machine front roller-way, then by I-shaped liner plate handling to treating above straightening plate, utilizes and rectifys
The centralising device that straight machine machine front roller-way is equipped with makes I-shaped liner plate and treats that straightening plate aligns；
3) the first passage aligning: two grades of armor plate strengths calculating aligning roll gap needs are for treating straightening plate armor plate strength, and steel plate thickness is
Treating straightening plate thickness and liner plate thickness sum, amount of plastic deformation selects 80%, startup the after roll gap calculates and automatically sets end
A time is aligned, and aligns to be hung by liner plate after terminating and treats straightening plate；
4) the second passage aligning: two grades of armor plate strengths calculating aligning roll gap needs are for treating straightening plate armor plate strength, and steel plate thickness is
Treating straightening plate thickness, amount of plastic deformation selects 60%, starts the second passage aligning, rectify after roll gap calculates and automatically sets end
The glacing flatness of steel plate is measured after directly terminating.
In the present invention, the centralising device utilizing straightener machine front roller-way to be equipped with makes I-shaped liner plate and treats that straightening plate edge is alignd, and treats
Straightening plate length is positioned at I-shaped liner plate zone line.
Further, the central region width of I-shaped liner plate width is 800mm, and length is respectively 400mm end to end, and thickness is
4mm。
The invention is characterized in that I-shaped liner plate overlays the method treating to carry out aligning above straightening plate together, make steel plate width direction
The central region of width in straightening process, produce tension force, increase the central region center thickness layer in steel plate width direction
Elastic deformation amount, finally realizes effective aligning that limit Thin Specs cut deal bilateral wave wooden dipper is bent.
The present invention utilizes I-shaped liner plate to overlay the method treating to carry out aligning above straightening plate together, makes in steel plate width direction
Region, portion produces tension force in straightening process, increases the elastic deformation amount of steel plate width direction central region center thickness layer, finally
Realizing effective aligning that limit Thin Specs cut deal bilateral wave wooden dipper is bent, leveling effect is good, and after aligning, plate quality meets the requirements.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the bilateral wave curved steel plate of wooden dipper in prior art.
Fig. 2 is the structural representation of I-shaped liner plate in the present invention.
Fig. 3 is bilateral wave wooden dipper bent plate and the schematic diagram of liner plate superposition in the present invention.
Detailed description of the invention
A kind of 4mm yield strength is the cold leveling technique that 400MPa cut deal bilateral wave wooden dipper is bent, the straightener roller footpath that this technique uses
It is respectively 180mm and 240mm with roll spacing.Plate size specification is 4 × 2400 × 10000mm, and original glacing flatness is about 35mm/2m,
The overall dimensions of lamination is 4 × 2400 × 10000mm, and the central region width of lamination width is 800mm, and length is divided end to end
Wei 400mm.After straightening plate and liner plate lamination, centering, the first passage utilizes 8mm, 400MPa and 80% the rate of plastic deformation to make
Being two grades of bases, calculating and obtaining entrance roll gap is-1mm, and outlet roll gap is 0mm, and roll gap starts first after having set
Secondary aligning, aligning hangs I-shaped liner plate after terminating.Second passage utilizes 4mm, 400MPa and 60% the rate of plastic deformation as two
Level basis, calculating and obtaining entrance roll gap is-3mm, and outlet roll gap is 0mm, starts the second passage aligning after having set,
Finally realizing effective aligning that limit Thin Specs cut deal bilateral wave wooden dipper is bent, aligning is measured the glacing flatness of steel plate and is less than after terminating
6mm/2m, leveling effect is good, and after aligning, plate quality meets the requirements.
Detailed process is as follows:
(1) liner plate makes: chooses the same type steel plate of 4 × 2400 × 10000mm, utilizes CUT to cut into I-shaped
Shape liner plate, the central region width of liner plate width is 800mm, and length is respectively 400mm end to end；
(2) will treat that straightening plate handling, to straightener machine front roller-way, then by I-shaped liner plate handling to treating above straightening plate, and makes
I-shaped liner plate and treat that straightening plate aligns end to end, utilize centralising device that straightener machine front roller-way is equipped with by I-shaped liner plate with wait to rectify
Straight plate alignment；See Fig. 3, in Fig. 3,1 be treat straightening plate, 2 be I-shaped liner plate.
(3) first passage alignings: two grades of armor plate strengths calculating aligning roll gap needs are 400MPa, and steel plate thickness is 8mm, moulds
Property deflection select 80%, calculated straightener inlet roll gap be-1mm, export roll gap be 0mm, treat that roll gap automatically sets knot
Start the first passage aligning after bundle, align to be hung by liner plate after terminating and treat straightening plate；
(4) second passage alignings: two grades of armor plate strengths calculating aligning roll gap needs are 400MPa, and steel plate thickness is 4mm, moulds
Property deflection select 60%, calculated straightener inlet roll gap be-3mm, export roll gap be 0mm, treat that roll gap automatically sets knot
Starting the second passage aligning after bundle, aligning measures the glacing flatness of steel plate less than 6mm/2m after terminating.
The present invention solves the aligning problem that limit Thin Specs cut deal bilateral wave wooden dipper is bent.
Claims (3)
1. the lamination straightening process that a limit Thin Specs cut deal bilateral wave wooden dipper is bent, it is characterized in that: I-shaped liner plate is overlayed and treats to align together above straightening plate by this technique, the central region making steel plate width direction produces tension force in straightening process, increase the elastic deformation amount of the central region center thickness layer in steel plate width direction, realize effective aligning that limit Thin Specs cut deal bilateral wave wooden dipper is bent, specifically comprise the following steps that
1) liner plate makes: choose liner plate, liner plate length ratio treats that straightening plate long 0～600mm, width be identical with treating straightening plate, thickness is more than 4mm, liner plate edge is cut away, the central region residue width of width is 300～1000mm, residue length is 400～700mm end to end, makes I-shaped liner plate；
2) will treat straightening plate handling to straightener machine front roller-way, then by I-shaped liner plate handling to treating above straightening plate, the centralising device utilizing straightener machine front roller-way to be equipped with makes I-shaped liner plate and treat that straightening plate aligns；
3) the first passage aligning: two grades of armor plate strengths calculating aligning roll gap needs are for treating straightening plate armor plate strength, steel plate thickness is for treating straightening plate thickness and liner plate thickness sum, amount of plastic deformation selects 80%, after roll gap calculates and automatically sets end, start the first passage aligning, align to be hung by liner plate after terminating and treat straightening plate；
4) the second passage aligning: two grades of armor plate strengths calculating aligning roll gap needs are for treating straightening plate armor plate strength, steel plate thickness is for treating straightening plate thickness, amount of plastic deformation selects 60%, starting the second passage aligning after roll gap calculates and automatically sets end, aligning measures the glacing flatness of steel plate after terminating.
The lamination straightening process that limit Thin Specs cut deal the most according to claim 1 bilateral wave wooden dipper is bent, it is characterized in that: step 2) in, the centralising device utilizing straightener machine front roller-way to be equipped with makes I-shaped liner plate and treats that straightening plate edge is alignd, and treats that straightening plate length is positioned at I-shaped liner plate zone line.
The lamination straightening process that limit Thin Specs cut deal the most according to claim 1 bilateral wave wooden dipper is bent, it is characterised in that: in step 1), the central region width of I-shaped liner plate width is 800mm, and length is respectively 400mm end to end, and thickness is 4mm.
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| CN201510524962.1A CN105080969B (en) | 2015-08-25 | 2015-08-25 | The lamination straightening process that a kind of limit Thin Specs cut deal bilateral wave wooden dipper is bent |
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| CN109706303B (en) * | 2019-01-04 | 2020-07-14 | 南京钢铁股份有限公司 | Method for controlling plate shape of thin-specification quenching and tempering plate with mixed edge waves and middle waves |
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| JP2009172613A (en) * | 2008-01-22 | 2009-08-06 | Seiko Epson Corp | Straightening device for metal plate material and manufacturing method of metal plate material |
| CN104138933B (en) * | 2013-05-10 | 2016-02-24 | 宝山钢铁股份有限公司 | Unrestrained control method in aligning Wide and Thick Slab |
| CN104001757A (en) * | 2014-05-23 | 2014-08-27 | 南京钢铁股份有限公司 | Cold straightening process for high-strength thin plate |
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