CN102716911A - Composite supporting roll for hot-continuous rolling wide-strip-steel four-roll mill - Google Patents
Composite supporting roll for hot-continuous rolling wide-strip-steel four-roll mill Download PDFInfo
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- CN102716911A CN102716911A CN2012102112303A CN201210211230A CN102716911A CN 102716911 A CN102716911 A CN 102716911A CN 2012102112303 A CN2012102112303 A CN 2012102112303A CN 201210211230 A CN201210211230 A CN 201210211230A CN 102716911 A CN102716911 A CN 102716911A
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- roll
- composite supporting
- steel
- cvc
- strip
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Abstract
The invention discloses a composite supporting roll for a hot-continuous rolling wide-strip-steel four-roll mill, and belongs to the technical field of steel rolling. The roll-shaped curve description equation of the composite supporting roll is as follows: R(x)=b6x6+b5x5+b3x3+b2x2+b1x+b0. The composite supporting roll disclosed by the invention has the advantages that when being matched with a CVC roll-shaped working roll for use, the stress concentration among rolls can be eliminated, contact stress distribution among the rolls is improved, the problems of non-uniform wearing and peeling of the rolls due to stress concentration are solved, and further the quality of the plate shape is improved while reducing the roll consumption.
Description
Technical field
The present invention relates to technical field of steel rolling, particularly a kind of composite supporting roller that is used for hot continuous rolling wide flat steel four-high mill.
Background technology
The strip steel is a kind of steel plate that can be widely used in fields such as industry, agricultural, national defence, in the national economic development, play an important role, an important step in the production procedure of strip steel comprise with steel billet through the calendering mode be processed into the band coil of strip.
Along with science and technology development; The develop rapidly of particularly modernized industrial department such as automobile, system jar and household electric appliances etc.; Not only the demand to the strip steel sharply increases, and its quality, dimensional accuracy, surface quality and performance have been proposed strict requirement.Slave plate shape control aspect; Main research focus has concentrated on mm finishing mill unit backing roll and working roll structure and the roll forming thereof; Mainly comprise roll formings such as CVC, HC, SmartCrown, PC, UPC, HVC, there is the not enough problem of unit ability of regulation and control mostly in the roll forming of these types.The change contact length support roller (VCL of version type control seminar of University of Science & Technology, Beijing independent development; VCR) technology can not change the problem that solves unit ability of regulation and control deficiency under the condition that has rolling mill structure now and do not influence production; But; This becomes contact length support roller complex structure, and cost is high, is difficult on conventional milling train, promoting.The patent No. is the backing roll that 96103393.2 Chinese patent discloses a kind of continuously variable supporting width, still, this backing roll complex structure, cost is high.Since the CVC roll forming comes out; It is widely used in the mm finishing mill unit of hot wide band rolling mill, and it has the effect of plate shape control preferably, still; When plain-barreled roll shape backing roll and CVC working roll configuration use; There is the inconsistent irregular wear in both sides in backing roll, and portion exists stress to concentrate on the limit, is unfavorable for the reduction of control of plate shape and roll consumption.The patent No. is that 9517449.5 Chinese patent discloses a kind of roll forming of the roll that changes roll gap convexity and variable roll gap shape that moves axially, and the body of roll bus curve of this roll forming is SIN function and cubic polynomial combination of function compound function together; The patent No. is that 200510024680.1 Chinese patent discloses a kind of backing roll that cooperates continuous variable crown mill shape of working roll curve.
In the prior art, the backing roll that uses with the configuration of CVC working roll mainly comprises CVC working roll and plain-barreled roll backing roll, but in practical application, there are following problem respectively in CVC backing roll and plain-barreled roll backing roll:
When CVC backing roll and the configuration of CVC working roll are used; Because the CVC backing roll is in roll one side; The raise up direction of trend section and limit portion chamfering of body of roll curve is just the opposite; Thereby, as can beappreciated from fig. 1, can occur the stress distribution inequality between CVC backing roll and the CVC working roll and the zone that stress is concentrated occur.When plain-barreled roll backing roll and the configuration of CVC working roll are used, as can beappreciated from fig. 2, behind long-play, cause working roll tired band to occur easily, and then, make working roll fatigue crack occur, after the crackle expansion, just cause roll limit portion large tracts of land to be peeled off.As can beappreciated from fig. 3, when adopting CVC backing roll or plain-barreled roll backing roll, comparatively serious wearing and tearing can appear in a side of roll, and then cause the control accuracy of plate shape to descend.
Facts have proved that support roller and shape of working roll configuration are to solve a kind of effective means that roller presses the power homogenising indirectly.Therefore, can pass through to change the roll forming of backing roll, thereby when backing roll and shape of working roll configuration use, make work better.
Summary of the invention
In order to address the above problem; The present invention proposes a kind of in order to solve backing roll in the wide steel strip hot continuous mill group with the CVC working roll because limit portion stress is concentrated the roll wear inequality that causes and the problem of spalling of rolls, thereby reduce the compound roll forming of hot continuous rolling wide flat steel four-high mill backing roll of roll consumption, raising hot-strip version type control accuracy.
The curve description equation of the roll forming of the composite supporting roller that is used for hot continuous rolling wide flat steel four-high mill provided by the invention is following:
R(x)＝b
6x
6+b
5x
5+b
4x
4+b
3x
3+b
2x
2+b
1x+b
0
Wherein,
0≤x≤2250；
-4.5×10
-19≤b
6≤-2.7×10
-19，
1.8×10
-15≤b
5≤3.0×10
-15，
-8.2×10
-12≤b
4≤-5.0×10
-12，
7.7×10
-9≤b
3≤1.3×10
-8，
-1.1×10
-5≤b
2≤-7.3×10
-6，
-4.5×10
-19≤b
1≤-2.7×10
-19，
-3.5×10
-10≤b
0≤-4.6×10
-10；
R (x)-working roll body of roll semidiameter, mm,
X-body of roll axial coordinate, the origin of coordinates is at the roll fore side, mm,
b
6, b
5, b
4, b
3, b
2, b
1, b
0-polynomial equation coefficient.
The beneficial effect that is used for the composite supporting roller of hot continuous rolling wide flat steel four-high mill provided by the invention is; When the configuration of itself and CVC roll forming working roll is used; Can eliminate between roller stress and concentrate, improve contacting stress distribution between roller, the wearing and tearing of avoiding the roll stress to concentrate causing uneven with the problem of peeling off; And then, when reducing the roller consumption, improve strip shape quality.
Description of drawings
Fig. 1 is the curve map that contacts stress distribution between the roller of CVC backing roll and CVC working roll configuration in the prior art;
Fig. 2 is the curve map that contacts stress distribution between the roller of plain-barreled roll backing roll and CVC working roll configuration in the prior art;
Fig. 3 be in the prior art CVC backing roll and plain-barreled roll backing roll respectively with the backing roll worn roll roll shape curve figure of CVC working roll configuration; Wherein a curve is represented the backing roll worn roll roll shape curve that CVC backing roll and CVC working roll dispose, and another curve is represented the backing roll worn roll roll shape curve of plain-barreled roll backing roll and the configuration of CVC working roll;
The roll shape curve figure of the composite supporting roller that Fig. 4 provides for the embodiment of the invention;
Contact the curve map of stress distribution between the roller of the composite supporting roller that Fig. 5 provides for the embodiment of the invention and the configuration of CVC working roll;
The backing roll worn roll roll shape curve figure of composite supporting roller that Fig. 6 provides for the embodiment of the invention and the configuration of CVC working roll.
The specific embodiment
In order to understand the present invention in depth, the present invention is elaborated below in conjunction with accompanying drawing and specific embodiment.
The curve description equation of the roll forming of the composite supporting roller that is used for hot continuous rolling wide flat steel four-high mill provided by the invention is following:
R(x)＝b
6x
6+b
5x
5+b
4x
4+b
3x
3+b
2x
2+b
1x+b
0
Wherein,
0≤x≤2250；
-4.5×10
-19≤b
6≤-2.7×10
-19，
1.8×10
-15≤b
5≤3.0×10
-15，
-8.2×10
-12≤b
4≤-5.0×10
-12，
7.7×10
-9≤b
3≤1.3×10
-8，
-1.1×10
-5≤b
2≤-7.3×10
-6，
-4.5×10
-19≤b
1≤-2.7×10
-19，
-3.5×10
-10≤b
0≤-4.6×10
-10；
R (x)-working roll body of roll semidiameter, mm,
X-body of roll axial coordinate, the origin of coordinates is at the roll fore side, mm,
b
6, b
5, b
4, b
3, b
2, b
1, b
0-polynomial equation coefficient.
When the composite supporting roller that is used for hot continuous rolling wide flat steel four-high mill provided by the invention and the configuration of CVC roll forming working roll are used; Can eliminate between roller stress concentrates; Improve and contact stress distribution between roller; Avoid the problem that the concentrated wearing and tearing that cause of roll stress are uneven and peel off, and then, when reducing the roller consumption, improve strip shape quality.
Embodiment
The curve description equation of the roll forming of the composite supporting roller that is used for hot continuous rolling wide flat steel four-high mill that the embodiment of the invention provides is following:
R(x)＝(-4.0×10
-19)x
6+(3.0×10
-15)x
5+(-7.3×10
-12)x
4+(1.3×10
-8)x
3
+(-1.1×10
-5)x
2+(5.0×10
-3)x+(4.0×10
-10)
Wherein,
0≤x≤2250；
R (x)-working roll body of roll semidiameter, mm,
X-body of roll axial coordinate, the origin of coordinates is at roll fore side, mm.
The curve map of this curvilinear equation is as shown in Figure 4, and as can beappreciated from fig. 4, this curved side portion and chamfering transition are smooth; Referring to accompanying drawing 5, accompanying drawing 5 and accompanying drawing 1 are contrasted, can find out; There is not the concentrated zone of stress in this composite supporting roller when using with the configuration of CVC working roll; Accompanying drawing 5 and accompanying drawing 2 are contrasted, can find out that the phenomenon that large tracts of land is peeled off does not appear in roll limit portion.Referring to accompanying drawing 6, accompanying drawing 6 and accompanying drawing 3 are done contrast, can find out this composite supporting roller when using with the configuration of CVC working roll, abrasion condition is good, and then can improve strip shape quality.
The above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely the specific embodiment of the present invention; Be not limited to the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a composite supporting roller that is used for hot continuous rolling wide flat steel four-high mill is characterized in that, the roll shape curve descriptive equation of said composite supporting roller is following:
R(x)＝b
6x
6+b
5x
5+b
4x
4+b
3x
3+b
2x
2+b
1x+b
0
Wherein,
0≤x≤2250；
-4.5×10
-19≤b
6≤-2.7×10
-19，
1.8×10
-15≤b
5≤3.0×10
-15，
-8.2×10
-12≤b
4≤-5.0×10
-12，
7.7×10
-9≤b
3≤1.3×10
-8，
-1.1×10
-5≤b
2≤-7.3×10
-6，
-4.5×10
-19≤b
1≤-2.7×10
-19，
-3.5×10
-10≤b
0≤-4.6×10
-10；
R (x)-working roll body of roll semidiameter, mm,
X-body of roll axial coordinate, the origin of coordinates is at the roll fore side, mm,
b
6, b
5, b
4, b
3, b
2, b
1, b
0-polynomial equation coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102112303A CN102716911A (en) | 2012-06-21 | 2012-06-21 | Composite supporting roll for hot-continuous rolling wide-strip-steel four-roll mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102112303A CN102716911A (en) | 2012-06-21 | 2012-06-21 | Composite supporting roll for hot-continuous rolling wide-strip-steel four-roll mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102716911A true CN102716911A (en) | 2012-10-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102112303A Pending CN102716911A (en) | 2012-06-21 | 2012-06-21 | Composite supporting roll for hot-continuous rolling wide-strip-steel four-roll mill |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492814A (en) * | 2014-11-28 | 2015-04-08 | 首钢总公司 | Roll contour configuration method for hot-rolling 1580mm temper mill |
| CN109719136A (en) * | 2018-12-24 | 2019-05-07 | 唐山钢铁集团有限责任公司 | A kind of six power support roller roller curves |
| CN112246874A (en) * | 2020-09-30 | 2021-01-22 | 安阳钢铁股份有限公司 | Method for reducing edge peeling of supporting roll of heavy and medium plate mill |
| CN117574582A (en) * | 2024-01-16 | 2024-02-20 | 东北大学 | High-order curve fused sine function support roller shape for hot rolling and design method thereof |
-
2012
- 2012-06-21 CN CN2012102112303A patent/CN102716911A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492814A (en) * | 2014-11-28 | 2015-04-08 | 首钢总公司 | Roll contour configuration method for hot-rolling 1580mm temper mill |
| CN104492814B (en) * | 2014-11-28 | 2016-06-29 | 首钢总公司 | A kind of hot rolling 1580mm planisher roll forming configuring method |
| CN109719136A (en) * | 2018-12-24 | 2019-05-07 | 唐山钢铁集团有限责任公司 | A kind of six power support roller roller curves |
| CN109719136B (en) * | 2018-12-24 | 2021-02-26 | 唐山钢铁集团有限责任公司 | Roll-shaped curve of hexagonal square supporting roll |
| CN112246874A (en) * | 2020-09-30 | 2021-01-22 | 安阳钢铁股份有限公司 | Method for reducing edge peeling of supporting roll of heavy and medium plate mill |
| CN117574582A (en) * | 2024-01-16 | 2024-02-20 | 东北大学 | High-order curve fused sine function support roller shape for hot rolling and design method thereof |
| CN117574582B (en) * | 2024-01-16 | 2024-04-19 | 东北大学 | Method for designing roll shape of support roll by fusing high-order curves with sine functions for hot rolling |
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Application publication date: 20121010 |