CN107138540A - The approximating method and evaluation method of a kind of strip section plate profile shape - Google Patents

The approximating method and evaluation method of a kind of strip section plate profile shape Download PDF

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Publication number
CN107138540A
CN107138540A CN201710219308.9A CN201710219308A CN107138540A CN 107138540 A CN107138540 A CN 107138540A CN 201710219308 A CN201710219308 A CN 201710219308A CN 107138540 A CN107138540 A CN 107138540A
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plate
wide
evaluation
work
strip
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Inventor
林海海
常安
于孟
文杰
王凤琴
刘子英
赵林
李金龙
李宫胤
王慧
王永强
昝现亮
令狐克志
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Shougang Corp
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Shougang Corp
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Priority to CN201710219308.9A priority Critical patent/CN107138540A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B2038/004—Measuring scale thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/06—Width
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

The invention discloses a kind of approximating method of strip section plate profile shape and evaluation method, the approximating method includes：By on strip section width, measurement obtains strip width and the data set { x, h (x) } in the corresponding belt steel thickness in the strip width position, and wherein x is that strip width normalized is value after [1,1]；The wide matched curve of plate is set up, the wide matched curve of the plate is：F (x)=axn+bxn‑1+...+cx+d；Using the strip width after normalized as input x, corresponding belt steel thickness calculates coefficient a, b ... ..., c, d as output f (x)；To obtain the wide matched curve of plate；Wherein, n is fitting number of times.The present invention solves the technical problem that crown of strip in the prior art lacks quantitative description and evaluation effect difference, has reached the technique effect realized the quantitative assessment of strip quality, reduce belt steel rolling defect incidence.

Description

The approximating method and evaluation method of a kind of strip section plate profile shape
Technical field
The present invention relates to technical field of steel rolling, the approximating method of more particularly to a kind of strip section plate profile shape and evaluation side Method.
Background technology
In the operation of rolling, strip has the possibility of sideslip in milling train, can be produced not in the driving side and fore side of frame Same load, causes roll gap to change, so that belt plate shape is wedge shaped.The wide primary evaluation index of current Hot Strip includes Plate exterior feature convexity, shim values, the method and standard of quantitative description are lacked to plate profile shape, it is impossible to realize the comprehensive of the wide quality of hot-rolled coil Description is closed, single to the evaluation with steel plate profile shape in the prior art, evaluation effect is poor.
The content of the invention
The present invention provides the approximating method and evaluation method of a kind of strip section plate profile shape, solves band in the prior art Steel section configuration lacks the technical problem of quantitative description and evaluation effect difference, has reached the quantitative assessment for realizing strip quality, drop The low technique effect of belt steel rolling defect incidence.
In a first aspect, the invention provides a kind of approximating method of strip section plate profile shape, the approximating method includes： By on strip section width, measurement obtains strip width and the number in the corresponding belt steel thickness in the strip width position According to collection { x, h (x) }, wherein x is that strip width normalized is the value after [- 1,1]；Set up the wide matched curve of plate, the plate Wide matched curve is：F (x)=axn+bxn-1+...+cx+d；It is corresponding using the strip width after normalized as input x Belt steel thickness calculates coefficient a, b ... ..., c, d as output f (x)；To obtain the wide matched curve of plate；Wherein, n is fitting time Number.
Second aspect, based on same inventive concept, the application also provides a kind of evaluation side of strip section plate profile shape Method, the evaluation method includes：
Using above-mentioned approximating method, plate exterior feature matched curve f (x) is set up；
Calculate and according to the wide convexity C of plate, obtain the first evaluation of estimate w1；
Calculate and according to the wide shim values X of plate, obtain the second evaluation of estimate w2；
Calculate and according to the slope S lope_Sum of the wide matched curve of the plate, obtain the 3rd evaluation of estimate w3；
Calculate and according to the wide arc degree Value_Act_Ref of central panel, obtain the 4th evaluation of estimate w4；
Calculate and according to Monotonicity value Num_Slope_Zero, obtain the 5th evaluation of estimate w5；
The comprehensive evaluation value Slope_Sum of the crown of strip is calculated, wherein,
It is preferred that, it is described to calculate and according to the wide convexity C of plate, obtain the first evaluation of estimate w1, it is specially：
Computing board exterior feature convexity C, works as C>a1,w1=100*k1；Work as C<b1,w1=0；Work as b1≤C≤a1,
Wherein, a1For the wide convexity preset upper limit of plate, b1For the wide convexity pre-determined lower limit of plate, k1For the first weights.
It is preferred that, it is described to calculate and according to the wide shim values X of plate, obtain the second evaluation of estimate w2, it is specially：
Computing board exterior feature shim values X, works as X<a2,w2=100*k2；Work as X>b2, w2=50*k2；Work as a2≤X≤b2,
Wherein, a2For the wide shim values pre-determined lower limit of plate, b2For the wide shim values preset upper limit of plate, k2For the second weights.
It is preferred that, the calculation formula of the slope of the wide matched curve of the plate is as follows：
f'(xi) it is exterior feature matched curve f (x) first derivative；
xiFor i-th point on strip width direction of coordinate；
J takes number a little for the wide curve of plate in the width direction.
It is preferred that, the 3rd evaluation of estimate w3Specifically it is calculated as：
Work as Slope_Sum<a3,w3=100*k3；Work as Slope_Sum>b3, w3=50*k3；Work as a3≤Slope_Sum≤b3,
Wherein, a3For the wide Zygomorphy pre-determined lower limit of plate, b2For the wide Zygomorphy preset upper limit of plate, k3For the 3rd power Value.
It is preferred that, the calculation formula of the wide arc degree of the central panel is as follows：
In formula, as h (xi)≥H(xi) when, gi=1,；As h (xi)<f(xi) when gi=0；
h(xi) it is i-th point of corresponding strip actual (real) thickness value on strip width direction；
H(xi) for the belt steel thickness value on i-th point of corresponding reference straight line on strip width direction；
The reference straight line is the line with the wide intermediate point of steel plate respectively with its left and right critical point.
It is preferred that, the 4th evaluation of estimate w4Specifically it is calculated as：
Work as Value_Act_Ref<a4,w4=40*k4；Work as Value_Act_Ref>b4,w4=100*k4；Work as a4≤ Value_Act_Ref≤b4,
Wherein, a4For the wide arc degree pre-determined lower limit of central panel, b4For the wide arc degree preset upper limit of central panel, k4For Four weights.
It is preferred that, the Monotonicity value Num_Slope_Zero is specially f'(x)=0 when the number that solves；
Wherein, f'(xi) it is exterior feature matched curve f (x) first derivative.
It is preferred that, the 5th evaluation of estimate w5Specifically it is calculated as：
Work as Num_Slope_Zero<a5,w5=100*k5；Work as Num_Slope_Zero> b5, w5=60*k5；Work as a5≤ Num_Slope_Zero≤b5,
Wherein, a5For zero number pre-determined lower limit, b5For zero number preset upper limit, k5For the 5th weights.
The application has the advantages that：
The present invention formulates plate exterior feature and evaluates index of correlation, and provide each index correspondence by setting up the wide evaluation model of band steel plate Evaluation of estimate, realize the wide excellent quantitative overall merit of plate, effectively improve and roll with the wide evaluation precision of steel plate, be that downstream is cold rolling The setting of producing line technological parameter provides guidance, plate shape caused by reduction is mismatched because hot rolled plate is wide with cold rolling setup parameter Ratio of defects, improves belt plate shape quality.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below In required for the accompanying drawing that uses be briefly described, it should be apparent that, drawings in the following description are only some of the present invention Embodiment；
Fig. 1 is a kind of flow chart of the approximating method of strip section plate profile shape of the better embodiment of the application one；
Fig. 2 is that the wide arc level index of the application central panel evaluates schematic diagram；
Fig. 3 is a kind of flow chart of the evaluation method of strip section plate profile shape of the another better embodiment of the application；
Fig. 4 is the schematic diagram of the wide monotonicity metrics evaluation of plate.
Embodiment
The embodiment of the present application solves existing skill by the approximating method and evaluation method of a kind of strip section plate profile shape Crown of strip lacks the technical problem of quantitative description and evaluation effect difference in art, has reached and has realized that quantifying for strip quality is commented Valency, the technique effect for reducing belt steel rolling defect incidence.
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with Accompanying drawing and preferred embodiment, its embodiment, structure, feature and its effect are described in detail as after.In following description In, what different " embodiment " or " embodiment " was pointed out is not necessarily same embodiment.In addition, in one or three embodiment Special characteristic, structure or feature can be combined by any suitable form.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of passes System, for example, A and/or B, is specifically interpreted as：A and B can be included simultaneously, can be with individualism A, can also individualism B, can have above-mentioned three kinds of any situations.
In a first aspect, a kind of approximating method of strip section plate profile shape, referring to Fig. 1, the approximating method includes：
Step S110, by the way that on strip section width, measurement obtains strip width and in the strip width position The data set { x, h (x) } of corresponding belt steel thickness, wherein x is that strip width normalized is the value after [- 1,1]；
Example 1
The Breadth Maximum of strip width be 1000mm, then take the position coordinates of strip in the direction of the width for [- 500, 500], it is that coordinate is 0.8 after the position 400mm normalization of strip in the direction of the width after normalized.
Step S120, sets up the wide matched curve of plate, and the wide matched curve of the plate is：F (x)=axn+bxn-1+...+cx+ d；
Step S130, using the strip width after normalized as input x, corresponding belt steel thickness is used as output f (x) coefficient a, b ... ..., c, d, are calculated；To obtain the wide matched curve of plate；Wherein, n is fitting number of times.It is preferred that, n takes 10.
Example 2
Measurement takes 100 group data sets { x, h (x) }, and { -0.875,3.975 }, { -0.75,3.996 }, { 0,4.011 }, { 1,3.969 }, { 0.5,3.999 }, { -0.5,3.998 }, { -1,3.911 }, { 0.75,3.995 }, { 0.25,4.002 }, - 0.25,4.004 }, { 0.0125,4.001 } } (only listing 11 groups herein), the wide matched curve of plate is substituted into, coefficient a is calculated, B ... ..., c, d, are obtained
F (x)=- 1.133x10-0.006x9+2.612x8+0.227x7-2.29x6-0.297x5
+0.909x4+0.119x3-0.169x2-0.014x+4.011
Second aspect, based on same inventive concept, the application also provides a kind of evaluation side of strip section plate profile shape Method, the evaluation method includes：
Step S210, using above-mentioned approximating method, sets up plate exterior feature matched curve f (x)；
Wherein described approximating method is identical with the approximating method of strip section plate profile shape in first aspect, no longer detailed herein State.
Step S220, calculates and according to the wide convexity C of plate, obtains the first evaluation of estimate w1；
Wherein, calculated described in the step S220 and according to the wide convexity C of plate, obtain the first evaluation of estimate w1, it is specially：
Computing board exterior feature convexity C, works as C>a1,w1=100*k1；Work as C<b1,w1=0；Work as b1≤C≤a1,Wherein, a1For the wide convexity preset upper limit of plate, b1For the wide convexity pre-determined lower limit of plate, k1For One weights.
Plate exterior feature convexity C takes C in the step S22040, wherein
C40It is both sides away from the wide convexity of plate that edge is 40mm positions；
H in formula0For strip width direction centre position thickness value, that is, normalize the corresponding thickness in position that recoil is designated as 0 Value；
h1、h2Both sides are 40mm positions thickness value away from edge respectively on strip width direction.
Plate exterior feature convexity C40Index reflection plate exterior feature basic configuration, is to weigh the wide excellent basic index of plate.Convexity C40＞ a1When Represent plate profile shape preferable, it is preferred that a1Take 40, b1Take 10.
Step S230, calculates and according to the wide shim values X of plate, obtains the second evaluation of estimate w2；
Wherein, calculated described in the step S230 and according to the wide shim values X of plate, obtain the second evaluation of estimate w2, it is specially：
Computing board exterior feature shim values X, works as X<a2,w2=100*k2；Work as X>b2, w2=50*k2；Work as a2≤X≤b2,
Wherein, a2For the wide shim values pre-determined lower limit of plate, b2For the wide shim values preset upper limit of plate, k2For the second weights.
Plate exterior feature shim values X takes X in the step S23040, wherein X40=h1-h2
X40It is both sides away from the wide shim values of plate that edge is 40mm positions；
h1、h2Both sides are 40mm positions thickness value away from edge respectively on strip width direction
Wedge-shaped X40Index reflection plate exterior feature basic configuration, is to weigh the wide excellent basic index of plate.Shim values X40＜ a2Epoch Dash board profile shape is better, it is preferred that a2Take 5, b2Take 25.
Step S240, calculates and according to the slope S lope_Sum of the wide matched curve of the plate, obtains the 3rd evaluation of estimate w3；
Wherein, the calculation formula of the slope of the wide matched curve of plate described in the step S240 is as follows：
f'(xi) it is exterior feature matched curve f (x) first derivative；
xiFor i-th point on strip width direction of coordinate；
J takes number a little for the wide curve of plate in the width direction.
The 3rd evaluation of estimate w3Specifically it is calculated as：
Work as Slope_Sum<a3,w3=100*k3；Work as Slope_Sum>b3, w3=50*k3；Work as a3≤Slope_Sum≤b3,
Wherein, a3For the wide Zygomorphy pre-determined lower limit of plate, b2For the wide Zygomorphy preset upper limit of plate, k3For the 3rd power Value.The symmetry wide with plate can be reflected to a certain extent of the wide slope of curve of fitting plate, Slope_Sum<a3Shi Ze shows band Steel plate exterior feature Zygomorphy is preferable, it is preferred that a3For 0.2, b3For 1.2.
Step S250, calculates and according to the wide arc degree Value_Act_Ref of central panel, obtains the 4th evaluation of estimate w4；
Wherein, the calculation formula of the wide arc degree of central panel described in the step S250 is as follows：
In formula, as h (xi)≥H(xi) when, gi=1,；As h (xi)<f(xi) when gi=0；
h(xi) it is i-th point of corresponding strip actual (real) thickness value on strip width direction；
H(xi) for the belt steel thickness value on i-th point of corresponding reference straight line on strip width direction；
Referring to Fig. 2, the reference straight line is the wide intermediate point of band steel plate (takes x=± 0.9 with its left and right critical point respectively Put) line.
The 4th evaluation of estimate w4Specifically it is calculated as：
Work as Value_Act_Ref<a4,w4=40*k4；Work as Value_Act_Ref>b4,w4=100*k4；Work as a4≤ Value_Act_Ref≤b4,
Wherein, a4For the wide arc degree pre-determined lower limit of central panel, b4For the wide arc degree preset upper limit of central panel, k4For Four weights.
Plate exterior feature arc index is mainly by contrasting the wide middle part each position actual (real) thickness value of plate and each position pair on reference straight line The size of thickness value is answered, the wide arc degree of actual plate is judged.Central panel exterior feature arc degree during Value_Act_Ref=100% It is best.It is preferred that, a4For 0.5, b4For 1.
Step S260, calculates and according to Monotonicity value Num_Slope_Zero, obtains the 5th evaluation of estimate w5；
Wherein, Monotonicity value Num_Slope_Zero is specially f'(x described in the step S260)=0 when solve Number；
Wherein, f'(xi) it is exterior feature matched curve f (x) first derivative.
The 5th evaluation of estimate w5Specifically it is calculated as：
Work as Num_Slope_Zero<a5,w5=100*k5；Work as Num_Slope_Zero> b5, w5=60*k5；Work as a5≤ Num_Slope_Zero≤b5,
Wherein, a5For zero number pre-determined lower limit, b5For zero number preset upper limit, k5For the 5th weights.
The monotonicity of the wide matched curve of plate is judged by slope curve zero number Num_Slope_Zero indexs, it is preferable bent Line monotonicity is：In the wide intermediate point of plate using left curve as monotonic increase, in the wide intermediate point of plate using right side bearing as monotone decreasing, now Matched curve slope should be first just to be born afterwards, and zero number is 1.Work as zero number>When 1, show that the wide curve monotonicity of plate is not good enough, and Zero number is more, and plate exterior feature curve monotonicity is poorer.Fig. 4 shows that the monotonicity that slope zero number is 3 evaluates schematic diagram.
Step S270, calculates the comprehensive evaluation value Slope_Sum of the crown of strip, wherein,
It is preferred that, the first weights, the second weights, the 3rd weights, the 4th weights, the equal value 1 of the 5th weights.
The wide excellent degree of plate is divided according to plate wide comprehensive evaluation value.
The application has the advantages that：
The present invention formulates plate exterior feature and evaluates index of correlation, and provide each index correspondence by setting up the wide evaluation model of band steel plate Evaluation of estimate, realize the wide excellent quantitative overall merit of plate, effectively improve and roll with the wide evaluation precision of steel plate, be that downstream is cold rolling The setting of producing line technological parameter provides guidance, plate shape caused by reduction is mismatched because hot rolled plate is wide with cold rolling setup parameter Ratio of defects, improves belt plate shape quality, solves crown of strip shortage quantitative description in the prior art and evaluation effect is poor Technical problem, reached the technique effect realized the quantitative assessment of strip quality, reduce belt steel rolling defect incidence.
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 substitution, 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 (10)

1. a kind of approximating method of strip section plate profile shape, it is characterised in that the approximating method includes：
By on strip section width, measurement obtain strip width with the corresponding belt steel thickness in the strip width position Data set { x, h (x) }, wherein x be strip width normalized be [- 1,1] after value；
The wide matched curve of plate is set up, the wide matched curve of the plate is：F (x)=axn+bxn-1+...+cx+d；
Using the strip width after normalized as input x, corresponding belt steel thickness calculates coefficient a as output f (x), B ... ..., c, d；To obtain the wide matched curve of plate；Wherein, n is fitting number of times.
2. a kind of evaluation method of strip section plate profile shape, it is characterised in that the evaluation method includes：
Using the approximating method described in claim 1, plate exterior feature matched curve f (x) is set up；
Calculate and according to the wide convexity C of plate, obtain the first evaluation of estimate w1；
Calculate and according to the wide shim values X of plate, obtain the second evaluation of estimate w2；
Calculate and according to the slope S lope_Sum of the wide matched curve of the plate, obtain the 3rd evaluation of estimate w3；
Calculate and according to the wide arc degree Value_Act_Ref of central panel, obtain the 4th evaluation of estimate w4；
Calculate and according to Monotonicity value Num_Slope_Zero, obtain the 5th evaluation of estimate w5；
The comprehensive evaluation value Slope_Sum of the crown of strip is calculated, wherein,
3. evaluation method as claimed in claim 2, it is characterised in that the calculating and according to the wide convexity C of plate, obtain first and comment It is worth w1, it is specially：
Computing board exterior feature convexity C, works as C>a1,w1=100*k1；Work as C<b1,w1=0；Work as b1≤C≤
Wherein, a1For the wide convexity preset upper limit of plate, b1For the wide convexity pre-determined lower limit of plate, k1For the first weights.
4. evaluation method as claimed in claim 2, it is characterised in that the calculating and according to the wide shim values X of plate, second is obtained Evaluation of estimate w2, it is specially：
Computing board exterior feature shim values X, works as X<a2,w2=100*k2；Work as X>b2,w2=50*k2；Work as a2≤X≤b2,
Wherein, a2For the wide shim values pre-determined lower limit of plate, b2For the wide shim values preset upper limit of plate, k2For the second weights.
5. evaluation method as claimed in claim 2, it is characterised in that the calculation formula of the slope of the wide matched curve of the plate is such as Under：
<mrow> <mi>S</mi> <mi>l</mi> <mi>o</mi> <mi>p</mi> <mi>e</mi> <mo>_</mo> <mi>S</mi> <mi>u</mi> <mi>m</mi> <mo>=</mo> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>j</mi> </munderover> <msup> <mi>f</mi> <mo>&amp;prime;</mo> </msup> <mrow> <mo>(</mo> <msub> <mi>x</mi> <mi>i</mi> </msub> <mo>)</mo> </mrow> </mrow>
f'(xi) it is exterior feature matched curve f (x) first derivative；
xiFor i-th point on strip width direction of coordinate；
J takes number a little for the wide curve of plate in the width direction.
6. evaluation method as claimed in claim 5, it is characterised in that the 3rd evaluation of estimate w3Specifically it is calculated as：
Work as Slope_Sum<a3,w3=100*k3；Work as Slope_Sum>b3,w3=50*k3；Work as a3≤Slope_Sum≤b3,
Wherein, a3For the wide Zygomorphy pre-determined lower limit of plate, b2For the wide Zygomorphy preset upper limit of plate, k3For the 3rd weights.
7. evaluation method as claimed in claim 5, it is characterised in that the calculation formula of the wide arc degree of the central panel is such as Under：
<mrow> <mi>V</mi> <mi>a</mi> <mi>l</mi> <mi>u</mi> <mi>e</mi> <mo>_</mo> <mi>A</mi> <mi>c</mi> <mi>t</mi> <mo>_</mo> <mi>Re</mi> <mi>f</mi> <mo>=</mo> <mn>100</mn> <mi>%</mi> <mo>&amp;CenterDot;</mo> <mfrac> <mn>1</mn> <mi>j</mi> </mfrac> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>j</mi> </munderover> <msub> <mi>g</mi> <mi>i</mi> </msub> </mrow>
In formula, as h (xi)≥H(xi) when, gi=1,；As h (xi)<f(xi) when gi=0；
h(xi) it is i-th point of corresponding strip actual (real) thickness value on strip width direction；
H(xi) for the belt steel thickness value on i-th point of corresponding reference straight line on strip width direction；
The reference straight line is the line with the wide intermediate point of steel plate respectively with its left and right critical point.
8. evaluation method as claimed in claim 7, it is characterised in that the 4th evaluation of estimate w4Specifically it is calculated as：
Work as Value_Act_Ref<a4,w4=40*k4；Work as Value_Act_Ref>b4,w4=100*k4；Work as a4≤Value_Act_ Ref≤b4,
Wherein, a4For the wide arc degree pre-determined lower limit of central panel, b4For the wide arc degree preset upper limit of central panel, k4For the 4th power Value.
9. evaluation method as claimed in claim 2, it is characterised in that the Monotonicity value Num_Slope_Zero is specially f' (x) number solved when=0；
Wherein, f'(xi) it is exterior feature matched curve f (x) first derivative.
10. evaluation method as claimed in claim 9, it is characterised in that the 5th evaluation of estimate w5Specifically it is calculated as：
Work as Num_Slope_Zero<a5,w5=100*k5；Work as Num_Slope_Zero>b5, w5=60*k5；Work as a5≤Num_ Slope_Zero≤b5,
Wherein, a5For zero number pre-determined lower limit, b5For zero number preset upper limit, k5For the 5th weights.
CN201710219308.9A 2017-04-06 2017-04-06 The approximating method and evaluation method of a kind of strip section plate profile shape Pending CN107138540A (en)

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CN108188184A (en) * 2018-02-13 2018-06-22 中冶南方工程技术有限公司 A kind of method of determining crown of strip
CN110947773A (en) * 2020-02-26 2020-04-03 张家港扬子江冷轧板有限公司 Method for generating plate profile curve for rolling different steel grades
CN112179308A (en) * 2020-09-11 2021-01-05 山东钢铁集团日照有限公司 Hot-rolled steel strip cross section contour local high point grading discrimination method
CN112256722A (en) * 2020-08-31 2021-01-22 首钢京唐钢铁联合有限责任公司 Query system for hot rolled strip steel plate profile curve
CN112307598A (en) * 2020-09-30 2021-02-02 首钢集团有限公司 Method for evaluating edge plate profile of hot-rolled strip steel
CN112577403A (en) * 2019-09-27 2021-03-30 大族激光科技产业集团股份有限公司 Method and system for evaluating capacitor calibration effect
CN113198853A (en) * 2021-04-14 2021-08-03 首钢集团有限公司 Method and device for detecting contour defects of strip steel plate
CN113198839A (en) * 2021-04-14 2021-08-03 首钢集团有限公司 Method, device and equipment for diagnosing distribution rationality of shape data of machine frame discontinuity
CN113569903A (en) * 2021-06-09 2021-10-29 西安电子科技大学 Method, system, equipment, medium and terminal for predicting abrasion of numerical control machine tool cutter
CN114858120A (en) * 2022-04-15 2022-08-05 首钢集团有限公司 Method and device for evaluating outline warping of strip steel plate

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CN108188184B (en) * 2018-02-13 2019-09-03 中冶南方工程技术有限公司 A kind of method of determining crown of strip
CN108188184A (en) * 2018-02-13 2018-06-22 中冶南方工程技术有限公司 A kind of method of determining crown of strip
CN112577403A (en) * 2019-09-27 2021-03-30 大族激光科技产业集团股份有限公司 Method and system for evaluating capacitor calibration effect
CN110947773A (en) * 2020-02-26 2020-04-03 张家港扬子江冷轧板有限公司 Method for generating plate profile curve for rolling different steel grades
CN112256722A (en) * 2020-08-31 2021-01-22 首钢京唐钢铁联合有限责任公司 Query system for hot rolled strip steel plate profile curve
CN112179308A (en) * 2020-09-11 2021-01-05 山东钢铁集团日照有限公司 Hot-rolled steel strip cross section contour local high point grading discrimination method
CN112307598A (en) * 2020-09-30 2021-02-02 首钢集团有限公司 Method for evaluating edge plate profile of hot-rolled strip steel
CN112307598B (en) * 2020-09-30 2024-07-16 首钢集团有限公司 Evaluation method for hot rolled strip steel edge plate profile
CN113198853A (en) * 2021-04-14 2021-08-03 首钢集团有限公司 Method and device for detecting contour defects of strip steel plate
CN113198839A (en) * 2021-04-14 2021-08-03 首钢集团有限公司 Method, device and equipment for diagnosing distribution rationality of shape data of machine frame discontinuity
CN113198853B (en) * 2021-04-14 2023-09-15 首钢集团有限公司 Method and device for detecting profile defects of steel plate
CN113569903A (en) * 2021-06-09 2021-10-29 西安电子科技大学 Method, system, equipment, medium and terminal for predicting abrasion of numerical control machine tool cutter
CN113569903B (en) * 2021-06-09 2024-04-09 西安电子科技大学 Method, system, equipment, medium and terminal for predicting cutter abrasion of numerical control machine tool
CN114858120A (en) * 2022-04-15 2022-08-05 首钢集团有限公司 Method and device for evaluating outline warping of strip steel plate
CN114858120B (en) * 2022-04-15 2023-12-12 首钢集团有限公司 Evaluation method and device for strip steel plate profile warping

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