CN201543650U - Vertical roll with surface curve being quartic equation - Google Patents
Vertical roll with surface curve being quartic equation Download PDFInfo
- Publication number
- CN201543650U CN201543650U CN2009202109728U CN200920210972U CN201543650U CN 201543650 U CN201543650 U CN 201543650U CN 2009202109728 U CN2009202109728 U CN 2009202109728U CN 200920210972 U CN200920210972 U CN 200920210972U CN 201543650 U CN201543650 U CN 201543650U
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- curve
- edger roll
- blank
- roll
- vertical roll
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Abstract
The utility model relates to a vertical roll with a surface curve being a quartic equation. Seen from any horizontal direction, the two side roll edges of the vertical roll (20) comprise an inclined line (21), a curve (22) connected with the lower end of the inclined line smoothly and a vertical line (23) connected with the curve smoothly; and the curve is a quartic equation curve which is concave toward the inner side of the vertical roll and y is equal to a*4. The vertical roll can reduce the dog-bone peak height of the upper surface of a blank, thus shortening the width difference of slits of the upper surface and the lower surface and improving the quality of the edges of belt steel.
Description
Technical field
The utility model relates to a kind of edger roll, relate in particular to a kind of field of metallurgy blank is carried out the edger roll that had in the hot-rolling mill of hot rolling, the curve on this edger roll surface is the biquadratic equation curve.
Background technology
Blank generally is provided with vertical miller in the roughing district in course of hot rolling, be used for the width control to blank.In the set vertical miller in tradition hot rolling roughing district, the structure of its edger roll is: the roller limit, both sides (being the surface of edger roll) of seeing this edger roll from arbitrary horizontal direction is divided into two sections from top to bottom, epimere is an oblique line, and hypomere is a vertical line, oblique line and vertical line be connected to smooth connection.When utilization has the traditional mill milling blank of edger roll of this structure since the side pressure of width and can rolling blank surface produce bigger zigzag crest (this paper is commonly called as it and is " dog bone ").After rolling, can produce bigger slit defective (formed slit between the dog bone) on the upper and lower surface of blank again through the horizontal roller of roughing mill and finishing mill.And the surface configuration of edger roll has determined the inconsistent of blank upper and lower surface dog peak bone mass height, thereby often causes the slit width of the slit width of blank upper surface greater than lower surface, has a strong impact on product quality and lumber recovery.
In order to improve the above-mentioned defective that edger roll brought of traditional milling train, domestic patent " vertical roll of vertical edger and method for designing thereof " (patent No. 200710044006.9) has disclosed the roll forming (with reference to Fig. 1) of the used edger roll of a kind of milling train, traditional edger roll surface configuration is improved, to improve quality and the lumber recovery of blank after rolling.Promptly, the feature of the roll forming of this edger roll (surface configuration of edger roll) structure is as shown in Figure 1, the roller limit, both sides (being the edger roll surface) of seeing edger roll 10 from arbitrary horizontal direction comprises three sections of upper, middle and lower, epimere 11 is an oblique line, hypomere 13 is a vertical line, stage casing 12 is that this curve is a parabola to the inboard recessed curve of roller, and equation is y=-1.9x
2, wherein, the y span is 0～-180mm, the span of x is 0～9.733mm, and this parabolical upper and lower two sections respectively with oblique line, vertical line smooth connection.The blank of among Fig. 1 15 for being rolled, 14 for rolling datum level is the lower surface of blank 15,16 is the upper surface of blank 15.Edger roll 10 can reduce the difference in height of blank upper and lower surface dog peak bone mass to a certain extent by making the structure of this shape, helps to control the slit of the band steel billet material that is rolled.But, the edger roll of this shape and structure, more limited to the dog peak bone mass difference in height of improving band steel billet material upper and lower surface, still exist such problem: because traditional edger roll is bigger to the side pressure of band steel billet material on width, occurring blank upper surface limit portion slot distances after the horizontal roller of postorder is rolling exceeds standard, so blank upper surface limit portion slit width is greater than the slit width of lower surface, promptly dog peak bone mass height do not have be improved significantly.
The utility model content
Problem in view of above-mentioned existence, it is the edger roll of biquadratic equation that the purpose of this utility model is to provide a kind of surface curve, the band steel billet material upper and lower surface that the energy reduction is rolled is the dog peak bone mass height of upper surface limit portion especially, obviously improve blank upper and lower surface dog peak bone mass difference in height, improve the quality of products and lumber recovery.
For achieving the above object, surface curve of the present utility model is the edger roll of biquadratic equation, from arbitrary horizontal direction see the roller limit, both sides of edger roll comprise oblique line, with the curve and the vertical line that is connected with this curve smoothing of this oblique line lower end smooth connection, it is characterized in that described curve is to inboard recessed, the y=ax of described edger roll
4The biquadratic equation curve.
Above-mentioned y=ax
4In a be-0.0200579, and y be 0～-the 180mm scope, x is 0～9.733mm scope.
Therefore edger roll curve of the present utility model, can dwindle the lateral pressure amount to the blank upper surface owing to adopt biquadratic equation, keep certain side pressure angle, reduce the dog peak bone mass height of blank upper surface, thereby it is poor to dwindle the upper and lower surface slit width, improves strip edge portion quality.
Description of drawings
Fig. 1 represents that surface curve in the past is the surface configuration schematic diagram of traditional edger roll of quadratic equation.
Fig. 2 is that expression surface curve of the present utility model is the edger roll surface configuration schematic diagram of biquadratic equation.
Fig. 3 is that expression stage casing curve is that biquadratic equation and traditional stage casing curve are the line style comparison diagram of quadratic equation.
Fig. 4 is the comparison diagram of the traditional edger roll of expression and the utility model edger roll formed dog bone size in the operation of rolling.
The specific embodiment
Below, 2～4 describe the edger roll that surface curve of the present utility model is a biquadratic equation in detail with reference to the accompanying drawings.
Surface curve of the present utility model be biquadratic equation edger roll as shown in Figure 2, from arbitrary horizontal direction see the roller limit, both sides of edger roll 20 comprise the oblique line 21 of epimere, the stage casing that is connected with the lower end of this oblique line 21 level and smooth (smooth) curve 22 and with the vertical line 23 of the hypomere of these curve 22 smooth connections.Curve 22 is to edger roll 20 inboard recessed, y=ax
4The biquadratic equation curve.
Among Fig. 2,25 is the band steel billet material that is rolled, and 24 for rolling datum level is the blank lower surface, and 26 is the blank upper surface, and vertical line 23 upper ends (not shown) are 180mm (not shown) with the vertical range of the upper end (initial point in the x-y coordinate) of biquadratic equation curve 22.In the present embodiment, biquadratic equation y=ax
4In a be set at-0.0200579, i.e. y=-0.0200579x
4, therefore, the y in the biquadratic equation is taken as 0～-the 180mm scope; In addition, the upper end of vertical line 23 (not shown) (horizontal range of (initial point in the x-y coordinate) is 9.733mm, and promptly the x in the biquadratic equation is 0～9.733mm scope apart from the upper end of biquadratic equation curve 22.In other words, biquadratic equation y=ax
4Initiating terminal be initial point (not shown) in the x-y coordinate of Fig. 2, this initial point and oblique line 21 smooth connections are in y=-180mm place and vertical line 23 smooth connections.
Adopt the edger roll of the present utility model 20 of above-mentioned shape and structure, blank dog peak bone mass height (not shown) that it rolls out and the blank dog peak bone mass height that is rolled out apart from the distance (not shown) of blank limit portion and the edger roll 10 described in the traditional background technology thereof and compare apart from the distance of blank limit portion, the result is shown in the curve map of Fig. 3 and Fig. 4, and summary is summarized in the table 1.
Table 1
From Fig. 3 and Fig. 4 and table 1, can find out, edger roll 20 of the present utility model and the edger roll 10 the same pass edger rolls that belong to, roll-force can decomposite the component that acts on slab vertically downward, and this component can suppress the trend that slab raises up, thereby guarantees the stability of blank in the operation of rolling.Edger roll 20 of the present utility model is compared with edger roll 10, its advantage is: can find out from table 1, the blank dog peak bone mass height that edger roll 20 of the present utility model is rolled out has tangible reduction than the edger roll 10 of conventional art, especially the upper surface 26 of blank 25, the nearly 2mm of its dog bone height improvement amount, the improvement amplitude reaches 18.8%; Simultaneously, upper surface 26 dog bone integral body are moved outward, and maximum point moves 5.65mm outside the distance of blank limit portion, therefore, can effectively reduce the stand out of blank upper and lower surface slit, and blank upper and lower surface slit is reached unanimity, and improve strip edge portion quality.
Claims (3)
1. edger roll that surface curve is a biquadratic equation, from arbitrary horizontal direction see the roller limit, both sides of edger roll (20) comprise oblique line (21), with the curve (22) of this oblique line lower end smooth connection and the vertical line (23) that is connected with this curve smoothing, it is characterized in that described curve is to inboard recessed, the y=ax of described edger roll
4The biquadratic equation curve.
2. surface curve as claimed in claim 1 is the edger roll of biquadratic equation, it is characterized in that, described y=ax
4In a be-0.0200579.
3. surface curve as claimed in claim 1 or 2 is the edger roll of biquadratic equation, it is characterized in that, described y is 0～-the 180mm scope, x is 0～9.733mm scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202109728U CN201543650U (en) | 2009-10-20 | 2009-10-20 | Vertical roll with surface curve being quartic equation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202109728U CN201543650U (en) | 2009-10-20 | 2009-10-20 | Vertical roll with surface curve being quartic equation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201543650U true CN201543650U (en) | 2010-08-11 |
Family
ID=42598809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202109728U Expired - Lifetime CN201543650U (en) | 2009-10-20 | 2009-10-20 | Vertical roll with surface curve being quartic equation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201543650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014044A (en) * | 2018-01-09 | 2019-07-16 | 宝山钢铁股份有限公司 | A kind of high pressure descaling case interior lining panel |
-
2009
- 2009-10-20 CN CN2009202109728U patent/CN201543650U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014044A (en) * | 2018-01-09 | 2019-07-16 | 宝山钢铁股份有限公司 | A kind of high pressure descaling case interior lining panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |