CN106269902A - A kind of orientation silicon steel clapboard board-shape control method - Google Patents
A kind of orientation silicon steel clapboard board-shape control method Download PDFInfo
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- CN106269902A CN106269902A CN201610723858.XA CN201610723858A CN106269902A CN 106269902 A CN106269902 A CN 106269902A CN 201610723858 A CN201610723858 A CN 201610723858A CN 106269902 A CN106269902 A CN 106269902A
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- calender rolls
- intermediate calender
- tapering
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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
- B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/18—Roll crown; roll profile
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Abstract
The present invention relates to a kind of orientation silicon steel board-shape control method, particularly relate to a kind of orientation silicon steel clapboard board-shape control method, comprise the steps: that (1) raw material, to cutting, is divided into A, B volume；(2) an intermediate calender rolls one end being processed into taper, a upper intermediate calender rolls tapering is at fore side, and next intermediate calender rolls tapering is at transmission side；(3) intermediate calender rolls axial roll forming guiding mechanism is used to carry out Strip Shape Control；(4) ASU tooth bar radially roll shape guiding mechanism is used to carry out Strip Shape Control.The inventive method changes steel edge portion roll gap shape by the axial float of a upper and lower intermediate calender rolls with certain taper, thus realize the regulation of plate shape, and according to two kinds of difform clapboard coiled materials, regulate intermediate calender rolls tapering length and a change for tapering height, change an intermediate calender rolls has efficiency flat amount, the defect that when avoiding an intermediate calender rolls to adjust, side adjusting range is limited by ultimate value, thus improve plate shape Adjustment effect.
Description
Technical field
The present invention relates to a kind of orientation silicon steel board-shape control method, particularly relate to a kind of orientation silicon steel clapboard Strip Shape Control
Method.
Background technology
Belt steel rolling plate shape is extremely important for orientation silicon steel, directly affects pile pieces coefficient and the noise etc. of transformer core
Technical specification, is increasingly paid attention to user by production firm.Quality control to plate shape, not only improves the one-tenth of cold rolling process
Material rate, reduces broken belt, improves yield, and directly promotes the band occupation rate in market.
The cold rolling blank supply of material width of orientation silicon steel generally at about 1300mm, for 650mm twenty roller mill cold rolling it
Before blank need to be carried out sub-cut.Generally there is thick middle due to blank and the thin phenomenon in both sides, be formed for after sub-cut
The thinnest thick clapboard, especially affects the most notable on the plate shape of 0.15～0.23mm Thin Specs orientation silicon steel.Clapboard is given
The lifting of cold rolled sheet shape quality brings the biggest difficulty.In the operation of rolling of clapboard, it may appear that strip sideslip, cause in the middle of one
Tapering adjusts problem not in place, and then causes rolling template quality problems.
Actual production process generally use plate shape guiding mechanism plate shape is adjusted improving plate shape, but ASU tooth bar
Roller gap shape is carried out trace adjustment, and clapboard can be by being manually adjusted its template.But an intermediate calender rolls (1st) because of
Clapboard belt steel rolling off-centring, its adjusting range has reached the limit of lateral displacement and has limited and affect artificial template and adjust.
Summary of the invention
It is an object of the invention to the defect overcoming prior art to exist, it is provided that a kind of economical and effective, orientation can be obviously improved
The control method of silicon steel clapboard rolling back plate shape.
The technical scheme realizing the object of the invention is: a kind of orientation silicon steel clapboard board-shape control method, including walking as follows
Rapid:
(1) by hot rolling raw material to cutting after, be divided into A, B volume, A volume is the thick strip of rolling mill input operation lateral deviation, and B volume is transmission
Lateral deviation slab band；
(2) intermediate calender rolls on milling train and next intermediate calender rolls opposite end being processed into taper, a upper intermediate calender rolls tapering is behaviour
Making side, next intermediate calender rolls tapering is at transmission side, and with it, in opposite directions or contrary moving axially adjusts the length of coincidence parallel portion,
In the operation of rolling by the axial float of an intermediate calender rolls and next intermediate calender rolls change the shape of steel edge portion roll gap；
(3) during rolling A volume, increase a upper intermediate calender rolls has efficiency flat amount, and reduce next intermediate calender rolls has efficiency flat amount, contracting
Little upper intermediate calender rolls tapering length L, increases next intermediate calender rolls tapering length L simultaneously；When rolling B volume, reduce a upper intermediate calender rolls
Having efficiency flat amount, increase next intermediate calender rolls has efficiency flat amount, increases upper intermediate calender rolls tapering length L, reduces in next simultaneously
Between roller tapering length；
(4), in the operation of rolling, when adjustment of rolling mill work is by striking plate, feel elastomeric check two edge tightness, passes through ASU
Working roll roll gap shape is adjusted being controlled plate shape by tooth bar radially roll shape guiding mechanism.
Technique scheme, described A volume and B volume is clapboard, and clapboard thickness of two sides difference is 0.04～0.07mm.
Technique scheme, a described upper intermediate calender rolls, next intermediate calender rolls tapering length L are 18～20% that band steel plate is wide,
Tapering height S is L*2～3 ‰/2.
Technique scheme, when band steel plate a width of 645～655mm, a length of L of tapering is 120～130mm, and tapering is high
Degree S is 0.125～0.15mm.
Technique scheme, when rolling A volume, upper intermediate calender rolls tapering length L is 120mm, and tapering height S is 0.125mm,
Next middle tapering length L is 130mm, and tapering height S is 0.15mm；When rolling B volume, upper middle tapering length L is
130mm, tapering height S are 0.15mm, and next intermediate calender rolls tapering length L is 120mm, and tapering height S is 0.125mm.
Technique scheme, described ASU tooth bar radially roll shape guiding mechanism method of adjustment is that B supports roller, C supports roller on edge
There are 4 spring bearings in axial length direction, and the change of each spring bearing position is adjusted by 5 ASU rack drives eccentric hoops, warp
Cross the second intermediate calender rolls, first intermediate roll passes on working roll, is adjusted working roll roll gap shape.
Technique scheme, in Rolling Production tissue, takes the method that same sheer plank batching rolls, and i.e. A, B volume respectively
The method of batching rolling, reduces roll change number of times.
Using after technique scheme, the present invention has a following positive effect:
(1) present invention changes steel edge portion roller by the axial float of a upper and lower intermediate calender rolls with certain taper
Slit shape, thus realize the regulation of plate shape, and according to two kinds of difform clapboard coiled materials, regulate an intermediate calender rolls tapering length
With the change of tapering height, change an intermediate calender rolls has efficiency flat amount, it is to avoid when an intermediate calender rolls adjusts, side adjusting range is subject to
The defect that ultimate value limits, thus improve plate shape Adjustment effect；
(2) axially adjustable in the middle of the present invention one, not only can make outside band transversely size uniform, it is also possible to be used for eliminating
The strip side wave produced due to working roller bending deformation in the operation of rolling, has great role to steel edge portion extensional；
(3) present invention is by adjusting ASU convexity, regulates in the middle part of strip steel and the extensional amount of edge.Increase convexity, band
Extending quantitative change in the middle part of steel big, reduce convexity, it is big that steel edge portion extends quantitative change, thus can carry out ASU convexity according to plate shape condition
Regulation, thus improve plate shape；When strip steel supplied materials cross section wedge shape is bigger, by regulation ASU, support roll axis is made to tilt, also
Adjustable template；
(4) present invention uses A, B volume of method that batching rolls respectively, can change difference cone for the conversion synchronization of A, B volume
One intermediate calender rolls of degree, thus reduce roll change number of times, all bring positive effect to improving Rolling Production efficiency with promoting template quality.
Accompanying drawing explanation
It is clearly understood to make present disclosure be easier to, below according to specific embodiment and combine accompanying drawing, right
The present invention is described in further detail, wherein
Fig. 1 is the present invention one intermediate calender rolls mechanism for axial adjusting schematic diagram；
Fig. 2 is the present invention one intermediate calender rolls tapering schematic diagram；
Fig. 3 is ASU tooth bar of the present invention radially roll shape guiding mechanism schematic diagram；
In figure 1, a upper intermediate calender rolls；2, next intermediate calender rolls；3, working roll；4, working roll thrust bearing；5, B supports roller；6、C
Support roller；7, ASU tooth bar；8, ASU oil cylinder.
Detailed description of the invention
(embodiment 1)
Orientation silicon steel sotck thinkness is 2.3mm, and width is 1300mm.By blank by middle sub-cut, define rolling mill input work
The strip making side (i.e. near main behaviour's hands side) partially thick is A volume, otherwise the thin strip of the lateral deviation that works is B volume.In strip steel working side
Randomly selecting five position measurement strip thickness with transmission side edge, data are as shown in table 1:
Table 1:
Measurement data shows: after blank cutting, clapboard thickness difference is in the range of 0.04～0.07mm, meets hot rolling blank
Supply of material standard.
On the basis of length 850mm of steel rolling export orientation roller, taking blank width is 650mm, enters by standard rolling process
Row experiment, is measured the distance (each three of steel edge portion and guide roller edge respectively in steel rolling export side by four passages of steel rolling
Individual point), it is respectively defined as S1, S2, S3, S4, the difference of this four item data can reflect clapboard strip in the operation of rolling
Rolling center side-play amount trend.
Through experiment rolling, draw following data:
Table 2:
According to data above: roll the first passage rolling centerline side-play amount the least (in ± 0.5mm), roll later
Passage tabularium rolling center side-play amount is gradually increased, and maximum offset reaches 8～9mm.
As: A volume operation of rolling tabularium towards working side offset, B volume at operation of rolling tabularium towards transmission lateral deviation
Move, i.e. strip can offset towards the side that strip is thick in the operation of rolling, and A volume of total drift amount reaches 8.2mm, B volume of side-play amount
Reach 6.2mm.
When finding deformed steel strip during belt steel rolling, available the two guiding mechanism carries out on-line control.
The ultimate principle of one intermediate calender rolls (1st) axially roll forming guiding mechanism is: see Fig. 1, at upper and lower two pairs of first intermediate rolls
On, at contrary two ends, Roller Machining is tapered, upper intermediate calender rolls 1 tapering is at fore side, and next intermediate calender rolls 2 tapering is in transmission
Side, with it, in opposite directions or contrary moving axially adjusts the length of parallel portion (i.e. having efficiency flat amount) of coincidence, is so rolling
The shape of steel edge portion roll gap is mainly changed by the axial float of an intermediate calender rolls, except band can be promoted along horizontal during system
Outside size uniform, it is also possible to be used for eliminating the strip side wave produced in the operation of rolling due to working roller bending deformation, right
Steel edge portion extensional has great role.
The ultimate principle of ASU tooth bar radially roll shape guiding mechanism is: see Fig. 2, B, C support roller along axial length originating party to having 4
Individual spring bearing, the change of each spring bearing position is driven eccentric hoop arbitrarily to adjust by 5 ASU tooth bars 7, in the middle of second
Roller, first intermediate roll pass to, on working roll 3, roller gap shape be carried out trace adjustment.Adjust ASU convexity, in the middle part of strip steel
Extensional with edge has an impact.Increase convexity, extend in the middle part of strip steel and become big.Reducing convexity, steel edge portion extends and becomes big.When
When strip steel supplied materials cross section wedge shape is bigger, regulation ASU makes support roll axis tilt, it is possible to adjust template.
In the experiment operation of rolling, after each passage coil of strip template is adjusted normally by adjustment work by feel (loosening bar), respectively
ASU tooth bar 7 position and intermediate calender rolls number (1st) Value Data arrange as follows:
Table 3:
Note: in upper figure, ASU tooth bar 7 numerical value the biggest expression roll-force is the least；1st numeric representation has efficiency flat amount, adjusts row
Journey 0-100
Data above shows, ASU tooth bar 7 carries out trace adjustment to roller gap shape, and clapboard can be by artificial to it
Template is adjusted.But an intermediate calender rolls (1st) has reached lateral displacement because of clapboard belt steel rolling off-centring, its adjusting range
The limit and affect artificial template adjust.
According to rolling principle, when strip steel aligns rolling centerline production, roll-force is finally passed through in roll footage direction
The bearing block (saddle) of support roller device passes to frame, the bending moment that frame is born, and is even from frame edge to center
Continuous increasing, centre moment is maximum.
After offseting for clapboard, the distribution of force of strip each position changes, and maximum moment position is to thin side
Skew, thick side stress reduces, and thin side stress increases.It is not enough that the change of distribution of force causes thick side to be extended, and the extension of thin side adds
Greatly, reflection then shows as thick lateral deviation tight and thin lateral deviation pine in plate shape.
The key point of the schemes of countermeasures that the present invention proposes is that the adjustment of an intermediate calender rolls grinding taper value is to tackle strip
Skew.
Table 4:
Fig. 3 is shown in by one intermediate calender rolls tapering grinding schematic diagram, and grinding data are as shown in the table:
Table 5:
| Upper intermediate calender rolls 1 tapering | Next intermediate calender rolls 2 tapering | |
| A before adjusting, B volume | L=130mm；S=0.15mm | L=130mm；S=0.15mm |
| After adjustment A volume | L=120mm；S=0.125mm | L=130mm；S=0.15mm |
| After adjustment B volume | L=130mm；S=0.15mm | L=120mm；S=0.125mm |
One intermediate calender rolls is according to carrying out rolling experiment after data above grinding, and each passage coil of strip template adjusts normal rear each tooth bar
Position and an intermediate calender rolls numeric data arrange as follows:
Table 6:
Data above result shows, after being adjusted by one intermediate calender rolls taper value by schemes of countermeasures, clapboard is in rolling
During, the adjusting range of an intermediate calender rolls has substantially optimization relatively before, an intermediate calender rolls side adjusting range no longer occurs by pole
The restriction of limit value, template Adjustment effect significantly improves.
Preferably, in Rolling Production tissue, take the method that same sheer plank batching rolls, i.e. A, B volume respectively batching roll
The method of system, changes an intermediate calender rolls of different tapering, can reduce roll change number of times for the conversion synchronization of A, B volume, to improving rolling
Production efficiency and lifting template quality all bring positive effect.
The inventive method Strip Shape Control be applicable to the operation of rolling of various width specifications orientation silicon steels, for different plates
Wide, it is only necessary to upper and lower intermediate calender rolls tapering grinding data are changed, wherein tapering length L be that band steel plate is wide 18～20%,
Tapering height S is L*2～3 ‰/2, takes the higher limit of S when plate width is narrower, otherwise takes S lower limit.The inventive method is the suitableeest
For rolling the Strip Shape Control of the orientation silicon steel of different-thickness specification, especially 0.15～0.27mm Thin Specs directional silicon steel shape is more
It is easily deformed, uses this method that Strip Shape Control is had more positive effect.
Particular embodiments described above, has been carried out the purpose of the present invention, technical scheme and beneficial effect the most in detail
Describe in detail bright, be it should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in the guarantor of the present invention
Within the scope of protecting.
Claims (7)
1. an orientation silicon steel clapboard board-shape control method, it is characterised in that: comprise the steps:
(1) by hot rolling raw material to cutting after, be divided into A, B volume, A volume is the thick strip of rolling mill input operation lateral deviation, and B volume is transmission lateral deviation
Slab band；
(2) intermediate calender rolls (1) on milling train and next intermediate calender rolls (2) opposite end being processed into taper, a upper intermediate calender rolls tapering exists
Fore side, next intermediate calender rolls tapering is at transmission side, and with it, in opposite directions or contrary moving axially adjusts the length of coincidence parallel portion
Degree, in the operation of rolling by the shape of axial float change steel edge portion roll gap of an intermediate calender rolls (1) and next intermediate calender rolls (2)
Shape；
(3), during rolling A volume, increase a upper intermediate calender rolls (1) has efficiency flat amount, and reduce next intermediate calender rolls (2) has efficiency flat amount,
Reduce an intermediate calender rolls (1) tapering length L, increase next intermediate calender rolls (1) tapering length L simultaneously；When rolling B volume, reduce upper one
Intermediate calender rolls (1) have efficiency flat amount, increase next intermediate calender rolls (2) has efficiency flat amount, increases a upper intermediate calender rolls (1) tapering length
L, reduces next intermediate calender rolls (2) tapering length simultaneously；
(4), in the operation of rolling, feel elastomeric check two edge tightness when adjustment of rolling mill work is by striking plate, by ASU tooth bar
Radially working roll roll gap shape is adjusted being controlled plate shape by roll shape guiding mechanism.
2. orientation silicon steel clapboard board-shape control method as claimed in claim 1, it is characterised in that: described in step (1) A volume
Being clapboard with B volume, clapboard thickness of two sides difference is 0.04～0.07mm.
3. orientation silicon steel clapboard board-shape control method as claimed in claim 1, it is characterised in that: a described upper intermediate calender rolls
(1), next intermediate calender rolls (2) tapering length L be band steel plate wide 18～20%, tapering height S is L*2～3 ‰/2.
4. orientation silicon steel clapboard board-shape control method as claimed in claim 3, it is characterised in that: when band steel plate a width of 645
～during 655mm, a length of L of tapering is 120～130mm, tapering height S is 0.125～0.15mm.
5. orientation silicon steel clapboard board-shape control method as claimed in claim 4, it is characterised in that: when rolling A volume, in upper one
Between roller tapering length L be 120mm, tapering height S is 0.125mm, and next middle tapering length L is 130mm, and tapering height S is
0.15mm；When rolling B volume, upper middle tapering length L is 130mm, and tapering height S is 0.15mm, and next intermediate calender rolls tapering is long
Degree L is 120mm, and tapering height S is 0.125mm.
6. orientation silicon steel clapboard board-shape control method as claimed in claim 1, it is characterised in that: described ASU tooth bar is radially
Roll shape guiding mechanism method of adjustment is that B supports roller (5), C support roller (6) is having 4 spring bearings, each support along axial length direction
The change of position of bearings is driven eccentric hoop to be adjusted by 5 ASU tooth bars (7), passes to through the second intermediate calender rolls, first intermediate roll
On working roll (3), working roll (3) roll gap shape is adjusted.
7. the orientation silicon steel clapboard board-shape control method as described in claim 1～6 any one claim, its feature exists
In: in Rolling Production tissue, take the method that same sheer plank batching rolls, i.e. A, B volume method that batching rolls respectively, reduce
Roll change number of times.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405628A (en) * | 2018-03-13 | 2018-08-17 | 武汉钢铁有限公司 | A kind of hot rolling non-orientation silicon steel optimum section contour outline control method |
| CN110788142A (en) * | 2019-10-08 | 2020-02-14 | 鞍钢股份有限公司 | Method for improving rolled plate shape of twenty-roller mill |
| CN112589155A (en) * | 2020-11-26 | 2021-04-02 | 广州众山精密科技有限公司 | Side jacking device of double-roller rolling mill |
| CN116970794A (en) * | 2023-09-19 | 2023-10-31 | 佛山通宝精密合金股份有限公司 | Annealing plate shape adjusting device and continuous annealing furnace |
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| JPH09155424A (en) * | 1995-12-01 | 1997-06-17 | Kobe Steel Ltd | Method for controlling shape of rolling stock in multi roll mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405628A (en) * | 2018-03-13 | 2018-08-17 | 武汉钢铁有限公司 | A kind of hot rolling non-orientation silicon steel optimum section contour outline control method |
| CN110788142A (en) * | 2019-10-08 | 2020-02-14 | 鞍钢股份有限公司 | Method for improving rolled plate shape of twenty-roller mill |
| CN112589155A (en) * | 2020-11-26 | 2021-04-02 | 广州众山精密科技有限公司 | Side jacking device of double-roller rolling mill |
| CN116970794A (en) * | 2023-09-19 | 2023-10-31 | 佛山通宝精密合金股份有限公司 | Annealing plate shape adjusting device and continuous annealing furnace |
| CN116970794B (en) * | 2023-09-19 | 2024-04-09 | 佛山通宝精密合金股份有限公司 | Annealing plate shape adjusting device and continuous annealing furnace |
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| CN106269902B (en) | 2019-04-23 |
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