CN104998910B - A kind of belt steel surface orange peel shape reticulate pattern defects controlling method - Google Patents
A kind of belt steel surface orange peel shape reticulate pattern defects controlling method Download PDFInfo
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- CN104998910B CN104998910B CN201510490851.3A CN201510490851A CN104998910B CN 104998910 B CN104998910 B CN 104998910B CN 201510490851 A CN201510490851 A CN 201510490851A CN 104998910 B CN104998910 B CN 104998910B
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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
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
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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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- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention belongs to hot rolling technique field, a kind of belt steel surface orange peel shape reticulate pattern defects controlling method is disclosed, it is characterised in that comprise the following steps：SGB roll shape curves are used in the support roller of hot rolling and leveling machine；SGW roll shape curves are used on the work rolls.Planisher processing parameter setting is 200~250 tons into roll-force, and uncoiling tension is 9 12 tons, and coiling tension is 20 23 tons, aligning unit commitment smoothing roll pressure, using etc. frequency variable step become the shifting strategy of stroke.The present invention mitigates working roll concentrated wear, the orange peel shape reticulate pattern defect on effective inhibiting band steel surface significantly by SGB and SGW roll shape curves and specific flattening process, the application of shifting strategy.
Description
Technical field
The present invention relates to hot rolling technique field, more particularly to a kind of belt steel surface orange peel shape reticulate pattern defects controlling method.
Background technology
Thin Specs hot-rolled product can partly substitute cold-rolled products, realize " with hot Dai Leng ", among these with 1.5mm~3mm
The hot rolling container plate of thickness specification, acid-cleaning plate are representative.Such product need to typically carry out smooth process, for improving band steel plate
Form quality amount, that is, eliminate shape wave defect.Due to not only requiring high to strip shape quality, at the same it is also very strict to surface defect requirement, this
Higher requirement is just proposed to hot-rolled leveling technology.
Study on Heat Strip Skin Process is that typical " dry " is smooth, and belt steel surface is covered with obvious iron scale, and smooth complete
Carried out under conditions of unlubricated and cooling, cause its working roll that the uneven wear of " W " shape, the edge mill of working roll is presented
Damage amount forms edge " pit " than larger.On the other hand, there is contact spike between support roller and working roll, one can be entered
This edge abrasion of step aggravation working roll.The stress concentration that working roller abrasion " pit " inside edge occurs, can be in working roll
Orange peel shape reticulate pattern is caused on roll surface, is transferred to belt steel surface to produce strip orange peel shape reticulate pattern defect.
The content of the invention
The present invention provides a kind of belt steel surface orange peel shape reticulate pattern defects controlling method, solves in the prior art, due to work
Make the problem of caused belt steel surface of roller abrasion produces orange peel shape reticulate pattern defect, reached and mitigate significantly control belt steel surface orange peel
The effect of shape reticulate pattern defect.
In order to solve the above technical problems, the invention provides a kind of belt steel surface orange peel shape reticulate pattern defects controlling method,
Comprise the following steps：
SGB roll shape curves are used in the support roller of hot rolling and leveling machine；
SGW roll shape curves are used on the work rolls；
Wherein, SGB roll shape curves are：SGB (x)=b6x6+b5x5+b4x4+b3x3+b2x2+b1x+b0；
SGW roll shape curves are：SGW (x)=r6x6+r5x5+r4x4+r3x3+r2x2+r1x+r0。
Further, in the SGB roll shape curves equation, SGB (x) be support roller semidiameter, unit for μm；X is support
The body of roll coordinate of roller, is normalized, and abscissa scope is [- 1,1]；
In equation coefficient, b6Span：1.092789E+02~2.100000E+02；b5Span：-
3.562309E-07~-6.344908E-08；b4Span：- 7.200001E+01~5.287882E+01；b3Value
Scope：7.038579E-08~3.138557E-07；b2Span：- 2.533615E+01~4.000000E+01；b1's
Span：- 4.767776E-08~4.377216E-08；b0Span：- 4.057074E-08~2.252480.
Further, the curvilinear equation of the SGB roll shape curves is：
Further, the curvilinear equation of described SGW roll shape curves is：
Wherein, SGW (x) be working roll semidiameter, unit for μm；X is the body of roll coordinate of working roll, and place is normalized
Reason, abscissa scope is [- 1,1].
Further, the flattening process of hot rolling thin strip is set including roll-force as 200~250 tons, and uncoiling tension is 9-
12 tons, coiling tension is 20-23 tons, the smoothing roll pressure of aligning unit commitment.
Further, also including step：
The frequency variable steps such as hot rolling and leveling machine input become the shifting strategy of stroke；
Roll shifting stroke and the relation equation of current strip block number are：
Wherein, f (x) is roll shifting stroke, and unit is mm；X is current strip block number, at intervals of 3 pieces；T is integer.
Further, hot rolling and leveling machine working roll uses high-hardness roll, and case hardness is 95~100HSD.
The one or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
1st, the belt steel surface orange peel shape reticulate pattern defects controlling method that the embodiment of the present application is provided, by hot rolling and leveling machine
Support roller on use SGB roll shape curves, improve the mill of working roll edge regional area using SGW roll shape curves on the work rolls
Damage degree, eliminates sharp wear of the pressure relief spike to working roll edge, so that effectively control strip is in formation process
There is orange peel shape reticulate pattern defect；The military service cycle of working roll is also extended simultaneously.
2nd, the belt steel surface orange peel shape reticulate pattern defects controlling method that the embodiment of the present application is provided, using roll shifting stroke with working as
The relation equation optimization shifting strategy of preceding strip block number, is transformed into middle part, uniformly by the contact pressure between rolls spike of edge position
" W " shape abrasion distribution of working roll, reduces orange peel shape reticulate pattern defect, extends the work roll changing cycle.
3rd, the belt steel surface orange peel shape reticulate pattern defects controlling method that the embodiment of the present application is provided, by technique initialization and
Roll material coordinates roll system arrangement and shifting strategy, improves the degree of wear of working roll edge regional area, extension working roll clothes
Labour cycle, reduction needs to carry out secondary smooth defect coil of strip quantity, while effectively controlling strip steel surface orange peel shape reticulate pattern
The generation of defect, the final hot rolling thin strip finished product for obtaining excellent surface quality.
Brief description of the drawings
Fig. 1 is SGB roll shape curves provided in an embodiment of the present invention；
Fig. 2 is SGW roll shape curves provided in an embodiment of the present invention.
Embodiment
The embodiment of the present application solves existing skill by providing a kind of belt steel surface orange peel shape reticulate pattern defects controlling method
Planisher working roll edge excessive wear in art, caused belt steel surface produces the technical problem of orange peel shape reticulate pattern defect, realizes
Effectively control the technique effect that belt steel surface produces orange peel shape reticulate pattern defect.
In order to solve the above technical problems, the general thought that the embodiment of the present application provides technical scheme is as follows：
A kind of belt steel surface orange peel shape reticulate pattern defects controlling method, it is characterised in that comprise the following steps：
SGB roll shape curves are used in the support roller of hot rolling and leveling machine；
SGW roll shape curves are used on the work rolls；
Wherein, SGB roll shape curves are：SGB (x)=b6x6+b5x5+b4x4+b3x3+b2x2+b1x+b0；
SGW roll shape curves are：SGW (x)=r6x6+r5x5+r4x4+r3x3+r2x2+r1x+r0。
By the above as can be seen that this passes through the roll system arrangement of planisher, technique initialization, shifting strategy and roll
Material, can finally improve the degree of wear of working roll edge regional area, and extension working roll is on active service the cycle, and reduction needs to carry out
Secondary smooth defect coil of strip quantity, while effectively controlling the generation of strip steel surface orange peel shape reticulate pattern defect.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
Technical scheme is stated to be described in detail.
Referring to Fig. 1 and Fig. 2, a kind of belt steel surface orange peel shape reticulate pattern defects controlling method provided in an embodiment of the present invention,
It is characterised in that it includes following steps：
SGB roll shape curves are used in the support roller of hot rolling and leveling machine；
SGW roll shape curves are used on the work rolls；
Wherein, SGB roll shape curves are：SGB (x)=b6x6+b5x5+b4x4+b3x3+b2x2+b1x+b0；
SGW roll shape curves are：SGW (x)=r6x6+r5x5+r4x4+r3x3+r2x2+r1x+r0。
In the SGB roll shape curves equation, SGB (x) be support roller semidiameter, unit for μm；X sits for the body of roll of support roller
Mark, is normalized, and abscissa scope is [- 1,1]；In equation coefficient, b6Span：1.092789E+02~
2.100000E+02；b5Span：- 3.562309E-07~-6.344908E-08；b4Value model：-7.200001E+
01~5.287882E+01；b3Span：7.038579E-08~3.138557E-07；b2Span：-
2.533615E+01~4.000000E+01；b1Span：- 4.767776E-08~4.377216E-08；b0Value model
Enclose：- 4.057074E-08~2.252480.
Further, the preferred scheme of SGB curvilinear equations is：
The curvilinear equation of SGW roll shape curves is：
Wherein, SGW (x) be working roll semidiameter, unit for μm；X is working roll body of roll coordinate, is normalized,
Abscissa scope is -1~1.
That is, roll system arrangement is optimized by using SGB and SGW roll shape curves, the edge for reducing working roll emphatically is local acutely
Abrasion so that working roll " pit " be improved significantly, effectively control belt steel surface produce orange peel shape reticulate pattern defect, extend work
Make roller to be on active service the cycle, produce good effect.
The flattening process of hot rolling thin strip is set including roll-force as 200~250 tons, and uncoiling tension is 9-12 tons, is batched
Tension force is 20-23 tons, the smoothing roll pressure of aligning unit commitment.Hot rolling and leveling machine working roll uses high-hardness roll, surface
95~100HSD of hardness.
That is, by the design of roll-force, uncoiling tension, coiling tension and roller material hardness, further supplement improves roller shape song
The abrasion inhibition of line, substantially improves the concentrated wear of working roll.
This method also includes step：
The frequency variable steps such as hot rolling and leveling machine input become the shifting strategy of stroke；
Roll shifting stroke and the relation equation of current strip block number are：
Wherein, f (x) is roll shifting stroke, and unit is mm；X is current strip block number, at intervals of 3 pieces；T is integer.
That is, roll shifting stroke and the relation equation optimization shifting strategy of current strip block number, will be contacted between the roller of edge position
Pressure spike is transformed into middle part, and " W " shape abrasion distribution of uniform working roll reduces orange peel shape reticulate pattern defect.
The one or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage：
1st, the belt steel surface orange peel shape reticulate pattern defects controlling method that the embodiment of the present application is provided, by hot rolling and leveling machine
Support roller on use SGB roll shape curves, improve the mill of working roll edge regional area using SGW roll shape curves on the work rolls
Damage degree, eliminates sharp wear of the pressure relief spike to working roll edge, so that effectively control strip is in formation process
There is orange peel shape reticulate pattern defect；The military service cycle of working roll is also extended simultaneously.
2nd, the belt steel surface orange peel shape reticulate pattern defects controlling method that the embodiment of the present application is provided, using roll shifting stroke with working as
The relation equation optimization shifting strategy of preceding strip block number, is transformed into middle part, uniformly by the contact pressure between rolls spike of edge position
" W " shape abrasion distribution of working roll, reduces orange peel shape reticulate pattern defect, extends the work roll changing cycle.
3rd, the belt steel surface orange peel shape reticulate pattern defects controlling method that the embodiment of the present application is provided, by technique initialization and
Roll material coordinates roll system arrangement and shifting strategy, improves the degree of wear of working roll edge regional area, extension working roll clothes
Labour cycle, reduction needs to carry out secondary smooth defect coil of strip quantity, while effectively controlling strip steel surface orange peel shape reticulate pattern
The generation of defect, the final hot rolling thin strip finished product for obtaining excellent surface quality.
It should be noted last that, above embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention is described in detail 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 departing from the spirit and scope of technical solution of the present invention, it all should cover
Among scope of the presently claimed invention.
Claims (6)
1. a kind of belt steel surface orange peel shape reticulate pattern defects controlling method, it is characterised in that comprise the following steps：
SGB roll shape curves are used in the support roller of hot rolling and leveling machine；
SGW roll shape curves are used on the work rolls；
Wherein, SGB roll shape curves are：SGB (x)=b6x6+b5x5+b4x4+b3x3+b2x2+b1x+b0；
SGW roll shape curves are：SGW (x)=r6x6+r5x5+r4x4+r3x3+r2x2+r1x+r0；
Wherein：In the SGB roll shape curves equation, SGB (x) be support roller semidiameter, unit for μm；X is the body of roll of support roller
Coordinate, is normalized, and abscissa scope is [- 1,1]；
In equation coefficient, b6Span：1.092789E+02~2.100000E+02；b5Span：-3.562309E-
07~-6.344908E-08；b4Span：- 7.200001E+01~5.287882E+01；b3Span：
7.038579E-08~3.138557E-07；b2Span：- 2.533615E+01~4.000000E+01；b1Value model
Enclose：- 4.767776E-08~4.377216E-08；b0Span：- 4.057074E-08~2.252480.
2. belt steel surface orange peel shape reticulate pattern defects controlling method as claimed in claim 1, it is characterised in that the SGB rollers
The curvilinear equation of shape curve is：
SGB (x)=2.100000E+02x6-3.562309E-07x5-7.200001E+01x4+3.138557E-07x3+
4.000000E+01x2+4.377216E-08x-4.057074E-08。
3. belt steel surface orange peel shape reticulate pattern defects controlling method as claimed in claim 1, it is characterised in that described SGW
The curvilinear equation of roll shape curve is：
Wherein, SGW (x) be working roll semidiameter, unit for μm；X is the body of roll coordinate of working roll, is normalized, horizontal
Coordinate range is [- 1,1].
4. belt steel surface orange peel shape reticulate pattern defects controlling method as claimed in claim 1, it is characterised in that：Hot rolling thin strip
Flattening process set including roll-force as 200~250 tons, uncoiling tension be 9-12 ton, coiling tension be 20-23 tons, align
Unit commitment smoothing roll is depressed.
5. belt steel surface orange peel shape reticulate pattern defects controlling method as claimed in claim 1, it is characterised in that also including step
Suddenly：
The frequency variable steps such as hot rolling and leveling machine input become the shifting strategy of stroke；
Roll shifting stroke and the relation equation of current strip block number are：
Wherein, f (x) is roll shifting stroke, and unit is mm；X is current strip block number, at intervals of 3 pieces；T is integer.
6. belt steel surface orange peel shape reticulate pattern defects controlling method as claimed in claim 4, it is characterised in that：Hot rolling and leveling machine
Working roll uses high-hardness roll, and case hardness is 95~100HSD.
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| CN105728467B (en) * | 2016-05-10 | 2017-07-11 | 广东韶钢松山股份有限公司 | A kind of roller shape technique for Medium and Heavy Plate Rolling |
| CN106862278B (en) * | 2017-04-14 | 2019-03-01 | 北京科技大学 | For variable step roll shifting control method in the period of hot rolling downstream rack working roll |
| CN108326042B (en) * | 2017-12-27 | 2019-09-17 | 日照钢铁控股集团有限公司 | The control method of hot rolling thin gauge decorative pattern roll bending plate shape |
| CN112246882B (en) * | 2020-09-29 | 2022-11-04 | 武汉钢铁有限公司 | Method for eliminating hot-dip galvanized transverse stripes of hot-rolled substrate |
| CN112246874B (en) * | 2020-09-30 | 2022-10-14 | 安阳钢铁股份有限公司 | Method for reducing edge peeling of supporting roll of heavy and medium plate mill |
| CN113699342B (en) * | 2021-08-11 | 2023-03-14 | 山东钢铁集团日照有限公司 | Control method for invisible orange peel defect of deep-drawing steel plate |
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| US6314776B1 (en) * | 2000-10-03 | 2001-11-13 | Alcoa Inc. | Sixth order actuator and mill set-up system for rolling mill profile and flatness control |
| CN101890429B (en) * | 2010-07-22 | 2011-12-28 | 首钢总公司 | Complete roll forming configuring method for wide flat steel hot rolling finish mill set |
| CN102397884A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Method for controlling crazing defect of surface of strip steel in high-Cu steel grade |
| CN102009067B (en) * | 2010-10-18 | 2012-05-23 | 北京科技大学 | Configuration method of medium and heavy plate roll system with consideration of both rolling stability and cross-section shape |
| CN202021201U (en) * | 2011-01-29 | 2011-11-02 | 首钢总公司 | Roll contour configuration structure of hot rolling temper mill |
| CN204135117U (en) * | 2014-07-16 | 2015-02-04 | 首钢京唐钢铁联合有限责任公司 | A kind of hot rolling and leveling machine roll system arrangement structure |
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