CN104550261B - A kind of planisher work roll bending power control method and device - Google Patents

Abstract

The present invention relates to technical field of steel rolling, disclose a kind of planisher work roll bending power control method and device.The method includes: obtain equivalent roll shifting value S that planisher working roll is current₁, the planisher working roll roll shifting value equivalent roll shifting value S before regulation₀, the equivalent width B of strip steel, under conditions of equivalent width B bending roller force to regulation and control effect D (B) of Gap crown and 6 sub symmetry multinomial roll shape curves；According to roll shape curve, S₁、S₀, B and D (B), it is thus achieved that the accounting equation of the bending roller force regulated quantity of planisher working roll；According to the regulated quantity drawn by accounting equation, the bending roller force of planisher working roll is adjusted.The solution of the problem that the roll shifting value change that present invention firstly provides the planisher working roll using 6 sub symmetry multinomial roll shape curves causes Gap crown to change, effectively compensate for the change of the Gap crown caused by the change of working roll roll shifting value, improve the planisher control effect to strip shape quality, improve the plate shape qualification rate of smooth product.

Description

A kind of planisher work roll bending power control method and device

Technical field

The present invention relates to technical field of steel rolling, be primarily adapted for use in planisher work roll bending power control method and device.

Background technology

Planisher is the visual plant of the strip shape quality controlling thin gauge strip product.Hot rolling or cold-strip steel are carried out by it Plastic deformation, to eliminate strip steel shape wave, thus improves the strip shape quality of belt steel product.Plate form quality is improved in order to improve planisher The effect of amount, needs the working roll for planisher to design roll shape curve.By the reality to strip shape quality control mechanism and product Plate profile shape is comprehensively analyzed, and determines that the maximally effective roll shape curve of the working roll of planisher is high order symmetric polynomial roller Sigmoid curves, commonly referred to as 6 sub symmetry multinomial roll shape curves.

Further, since the working roll of planisher typically has the function of roll shifting, therefore at the smoothing and rolling process of planisher In, need to be reduced the abrasion of the working roll of planisher by the roll shifting value of regulation working roll, to extend the working roll of planisher Service life.

But, different from general secondary symmetric polynomial curve roll forming and trigonometric function curve roll forming, use high order pair Claiming the working roll of planisher of multinomial roll shape curve in the case of roll shifting value changes, the Gap crown of planisher also can Change therewith, thus have influence on the situation of change of the elongation percentage on strip width direction, and eventually affect plate form quality The control effect of amount.

But at present, person skilled is still to use symmetrical roll shape curve roll shifting not interfere with the think of of Strip Shape Control quality Flattening process is formulated on road.Owing to there is no the roll shifting value for planisher working roll based on high order symmetric polynomial curve roll forming The solution of the problem that the Gap crown changed and cause also can change, has thus resulted in plate shape of formation process and has closed The reduction of lattice rate.

Summary of the invention

The technical problem to be solved is to provide a kind of planisher work roll bending power control method and device, it By the work roll bending power of planisher is adjusted, effectively compensate for the roll gap caused by the change of working roll roll shifting value The change of convexity, improves the planisher control effect to strip shape quality, and then improves the plate shape qualification rate of smooth product.

For solving above-mentioned technical problem, the invention provides a kind of planisher work roll bending power control method, including:

Obtain equivalent roll shifting value S that planisher working roll is current₁；

Obtain the planisher working roll roll shifting value equivalent roll shifting value S before regulation₀；

Obtain the equivalent width B of strip steel；

Obtain bending roller force regulation and control effect D (B) to Gap crown under conditions of equivalent width B；

Acquisition expression formula is r (x)=ax⁶+bx⁴+cx²6 sub symmetry multinomial roll shape curves；

According to described roll shape curve, S₁、S₀, B and D (B), it is thus achieved that the bending roller force regulated quantity Δ F's of described planisher working roll Accounting equation；Wherein, described accounting equation is:

$\mathrm{\ΔF}=\frac{60a{B}^2({S_1}^4-{S_0}^4)+(15a{B}^4+24{\mathrm{bB}}^2)({S_1}^2-{S_0}^2)}{-8D\left(B\right)};$

The bending roller force of described planisher working roll is adjusted by the regulated quantity Δ F according to being drawn by described accounting equation.

Further, equivalent roll shifting value S that described acquisition planisher working roll is current₁Including:

Obtain roll shifting value C that planisher working roll is currently practical₁；

Obtain unidirectional range S of planisher working roll roll shifting_M；

According to described C₁With described S_M, it is thus achieved that described S₁Accounting equation, calculate S₁；Wherein, described accounting equation is:

$S_1=[\frac{5C_1}{S_M}+\frac{1}{2}]\left(\frac{S_M}{5}\right).$

Further, the described acquisition planisher working roll roll shifting value equivalent roll shifting value S before regulation₀Including:

Obtain the planisher working roll roll shifting value actual roll shifting value C before regulation₀；

Obtain unidirectional range S of planisher working roll roll shifting_M；

According to described C₀With described S_M, it is thus achieved that described S₀Accounting equation, calculate S₀；Wherein, described accounting equation is:

$S_1=[\frac{5C_1}{S_M}+\frac{1}{2}]\left(\frac{S_M}{5}\right).$

Further, the equivalent width B of described acquisition strip steel includes:

Obtain the developed width B of strip steel_S；

According to described B_S, it is thus achieved that the accounting equation of described B, calculate B；Wherein, described accounting equation is:

$B=[\frac{B_s}{400}+\frac{1}{2}]\×400.$

Further, also include: calculated in different operating roller roll shifting value and different steel etc. by described accounting equation The bending roller force regulated quantity Δ F of the described planisher working roll under effect width, and set up data base；

The bending roller force of described planisher working roll is adjusted by the regulated quantity Δ F that described basis is drawn by described accounting equation Joint, including: inquire about described data base to the planisher working roll under different operating roller roll shifting value and different steel equivalent width Bending roller force is adjusted.

A kind of planisher work roll bending apparatus for adjusting force that the present invention provides, including:

First data acquisition module, for obtaining equivalent roll shifting value S that planisher working roll is current₁；

Second data acquisition module, for obtaining the planisher working roll roll shifting value equivalent roll shifting value S before regulation₀；

3rd data acquisition module, for obtaining the equivalent width B of strip steel；

4th data acquisition module, for obtaining the bending roller force regulation and control merit to Gap crown under conditions of equivalent width B Effect D (B)；

5th data acquisition module, being used for obtaining expression formula is r (x)=ax⁶+bx⁴+cx²6 sub symmetry multinomial roll formings Curve；

Accounting equation acquisition module, for according to described roll shape curve, S₁、S₀, B and D (B), it is thus achieved that described planisher work The accounting equation of the bending roller force regulated quantity Δ F of roller；Wherein, described accounting equation is:

$\mathrm{\ΔF}=\frac{60a{B}^2({S_1}^4-{S_0}^4)+(15a{B}^4+24{\mathrm{bB}}^2)({S_1}^2-{S_0}^2)}{-8D\left(B\right)};$

Adjustment module, for according to curved to described planisher working roll of the regulated quantity Δ F that drawn by described accounting equation Roller power is adjusted.

Further, described first data acquisition module, including:

First data capture unit, for obtaining roll shifting value C that planisher working roll is currently practical₁；

Second data capture unit, for obtaining unidirectional range S of planisher working roll roll shifting_M；

Arithmetic element, for according to described C₁With described S_M, it is thus achieved that described S₁Accounting equation, calculate S₁；Wherein, institute Stating accounting equation is:

$S_1=[\frac{5C_1}{S_M}+\frac{1}{2}]\left(\frac{S_M}{5}\right).$

Further, described second data acquisition module, including:

First data acquiring unit, for obtaining the planisher working roll roll shifting value actual roll shifting value C before regulation₀；

Second data acquiring unit, for obtaining unidirectional range S of planisher working roll roll shifting_M；

Computing unit, for according to described C₀With described S_M, it is thus achieved that described S₀Accounting equation, calculate S₀；Wherein, institute Stating accounting equation is:

$S_1=[\frac{5C_1}{S_M}+\frac{1}{2}]\left(\frac{S_M}{5}\right).$

Further, described 3rd data acquisition module, including:

Strip width acquiring unit, for obtaining the developed width B of strip steel_S；

Data processing unit, for according to described B_S, it is thus achieved that the accounting equation of described B, calculate B；Wherein, described calculating Equation is:

$B=[\frac{B_s}{400}+\frac{1}{2}]\×400.$

Further, also include:

Database module, for calculating in different operating roller roll shifting value and different steel by described accounting equation The bending roller force regulated quantity Δ F of the described planisher working roll under equivalent width, and set up data base；

Described adjustment module, specifically for inquiring about described data base to different operating roller roll shifting value and different steel equivalence width The bending roller force of the planisher working roll under Du is adjusted.

The beneficial effects of the present invention is:

The planisher work roll bending power control method of present invention offer and device, according to 6 sub symmetry polynomial curve works Make roller roll forming roll shifting value under the conditions of roll shifting and variable quantity thereof the most convex to actual roll gap under different steel width conditions The affecting laws of degree, in conjunction with bending roller force affecting laws to actual Gap crown under different steel width conditions, constructs work Make the accounting equation of the bending roller force regulated quantity of roller, and by the bending roller force regulated quantity that calculated by this accounting equation to different operating The bending roller force of the planisher working roll under roller roll shifting value and different steel equivalent width is adjusted, and has effectively compensated for by working The change of the Gap crown that the change of roller roll shifting value causes, thus improve the planisher control effect to strip shape quality, Jin Erti The high plate shape qualification rate of smooth product.

Accompanying drawing explanation

The flow chart of the planisher work roll bending power control method that Fig. 1 provides for the embodiment of the present invention；

The structured flowchart of the planisher work roll bending apparatus for adjusting force that Fig. 2 provides for the embodiment of the present invention.

Detailed description of the invention

By technological means and effect that the present invention by reach predetermined goal of the invention taked being expanded on further, below in conjunction with attached Figure and preferred embodiment, to the planisher work roll bending power control method proposed according to the present invention and the specific embodiment party of device Formula and operation principle are described in detail.

See Fig. 1, the planisher work roll bending power control method that the embodiment of the present invention provides, including:

Step S110: obtain equivalent roll shifting value S that planisher working roll is current₁, and S₁Unit be mm；

Being specifically explained this step, this step includes:

Obtain roll shifting value C that planisher working roll is currently practical₁, and C₁Unit be mm；

Obtain unidirectional range S of planisher working roll roll shifting_M, and S_MUnit be mm；

According to C₁And S_M, it is thus achieved that S₁Accounting equation, calculate S₁；Wherein, accounting equation is:

$S_1=[\frac{5C_1}{S_M}+\frac{1}{2}]\left(\frac{S_M}{5}\right).$

Step S120: obtain the planisher working roll roll shifting value equivalent roll shifting value S before regulation₀, and S₀Unit be mm；

Being specifically explained this step, this step includes:

Obtain the planisher working roll roll shifting value actual roll shifting value C before regulation₀, and C₀Unit be mm；

Obtain unidirectional range S of planisher working roll roll shifting_M, and S_MUnit be mm；

According to C₀And S_M, it is thus achieved that S₀Accounting equation, calculate S₀；Wherein, accounting equation is:

$S_1=[\frac{5C_1}{S_M}+\frac{1}{2}]\left(\frac{S_M}{5}\right).$

Step S130: obtain the equivalent width B of strip steel, and the unit of B is mm；

Being specifically explained this step, this step includes:

Obtain the developed width B of strip steel_S, and B_SUnit be mm；

According to B_S, it is thus achieved that the accounting equation of B, calculate B；Wherein, accounting equation is:

$B=[\frac{B_s}{400}+\frac{1}{2}]\×400.$

Step S140: obtain bending roller force regulation and control effect D (B) to Gap crown under conditions of equivalent width B, and D (B) Unit be um/ton；

Step S150: acquisition expression formula is r (x)=ax⁶+bx⁴+cx²6 sub symmetry multinomial roll shape curves；Wherein, x is The working roll axial coordinate value being 0, coordinate with working roll axial midpoint, unit is mm；R (x) is working roll axial coordinate value x The roller radius deviation value of point, unit is mm.

Need exist for explanation be, it is thus achieved that S₁、S₀, the order of B, D (B) and roll shape curve can not perform with said sequence, The order obtaining these 5 data is not made and specifically being limited, as long as ensureing that these 5 data can be obtained by the embodiment of the present invention ?.

Step S160: according to roll shape curve, S₁、S₀, B and D (B), it is thus achieved that the bending roller force regulated quantity Δ F of planisher working roll Accounting equation；Wherein, accounting equation is:

$\mathrm{\ΔF}=\frac{60a{B}^2({S_1}^4-{S_0}^4)+(15a{B}^4+24{\mathrm{bB}}^2)({S_1}^2-{S_0}^2)}{-8D\left(B\right)};$ Wherein, the list of bending roller force regulated quantity Δ F Position is ton；

Step S170: the bending roller force of planisher working roll is adjusted by the regulated quantity Δ F according to being drawn by accounting equation.

In order to enable staff rapidly to planisher working roll curved using 6 sub symmetry multinomial roll shape curves Roller power is adjusted, to improve work efficiency and production efficiency, and the method that the embodiment of the present invention provides, also include: by calculating Equation for Calculating goes out the bending roller force regulated quantity of the planisher working roll under different operating roller roll shifting value and different steel equivalent width Δ F, and set up data base；

Inquiry data base's roller to the planisher working roll under different operating roller roll shifting value and different steel equivalent width Power is adjusted.

See Fig. 2, the planisher work roll bending apparatus for adjusting force that the embodiment of the present invention provides, including:

First data acquisition module 100, for obtaining equivalent roll shifting value S that planisher working roll is current₁, and S₁Unit For mm；

In embodiments of the present invention, the first data acquisition module 100, including:

First data capture unit, for obtaining roll shifting value C that planisher working roll is currently practical₁, and C₁Unit be mm；

Second data capture unit, for obtaining unidirectional range S of planisher working roll roll shifting_M, and S_MUnit be mm；

Arithmetic element, for according to C₁And S_M, it is thus achieved that S₁Accounting equation, calculate S₁；Wherein, accounting equation is:

$S_1=[\frac{5C_1}{S_M}+\frac{1}{2}]\left(\frac{S_M}{5}\right).$

Second data acquisition module 200, for obtaining the planisher working roll roll shifting value equivalent roll shifting value S before regulation₀, And S₀Unit be mm；

In embodiments of the present invention, the second data acquisition module 200, including:

First data acquiring unit, for obtaining the planisher working roll roll shifting value actual roll shifting value C before regulation₀, and C₀ Unit be mm；

Second data acquiring unit, for obtaining unidirectional range S of planisher working roll roll shifting_M, and S_MUnit be mm；

Computing unit, for according to C₀And S_M, it is thus achieved that S₀Accounting equation, calculate S₀；Wherein, accounting equation is:

$S_1=[\frac{5C_1}{S_M}+\frac{1}{2}]\left(\frac{S_M}{5}\right).$

3rd data acquisition module 300, for obtaining the equivalent width B of strip steel, and the unit of B is mm；

In embodiments of the present invention, the 3rd data acquisition module 300, including:

Strip width acquiring unit, for obtaining the developed width B of strip steel_S, and B_SUnit be mm；

Data processing unit, for according to B_S, it is thus achieved that the accounting equation of B, calculate B；Wherein, accounting equation is:

$B=[\frac{B_s}{400}+\frac{1}{2}]\×400.$

4th data acquisition module 400, for obtaining the bending roller force regulation and control to Gap crown under conditions of equivalent width B Effect D (B), and the unit of D (B) is um/ton；

5th data acquisition module 500, being used for obtaining expression formula is r (x)=ax⁶+bx⁴+cx²6 sub symmetry multinomial rollers Sigmoid curves；Wherein, the working roll axial coordinate value that x is is 0, coordinate with working roll axial midpoint, unit is mm；R (x) is work Making the roller radius deviation value of roller axial coordinate figure x point, unit is mm.

Need exist for explanation be, it is thus achieved that S₁、S₀, the order of B, D (B) and roll shape curve can not perform with said sequence, The order obtaining these 5 data is not made and specifically being limited, as long as ensureing that these 5 data can be obtained by the embodiment of the present invention ?.

Accounting equation acquisition module 600, for according to roll shape curve, S₁、S₀, B and D (B), it is thus achieved that planisher working roll The accounting equation of bending roller force regulated quantity Δ F；Wherein, accounting equation is:

$\mathrm{\ΔF}=\frac{60a{B}^2({S_1}^4-{S_0}^4)+(15a{B}^4+24{\mathrm{bB}}^2)({S_1}^2-{S_0}^2)}{-8D\left(B\right)};$ Wherein, the list of bending roller force regulated quantity Δ F Position is ton；

Adjustment module 700, for entering the bending roller force of planisher working roll according to the regulated quantity Δ F drawn by accounting equation Row regulation.

In order to enable staff rapidly to planisher working roll curved using 6 sub symmetry multinomial roll shape curves Roller power is adjusted, to improve work efficiency and production efficiency, and the device that the embodiment of the present invention provides, also include:

Database module, for calculating in different operating roller roll shifting value and different steel equivalence by accounting equation The bending roller force regulated quantity Δ F of the planisher working roll under width, and set up data base；

In this case, adjustment module 700, specifically for inquiry data base to different operating roller roll shifting value and different band The bending roller force of the planisher working roll under steel equivalent width is adjusted.

The embodiment of the present invention is applied to the planisher of certain factory's hot-rolled leveling line, and is determined by the method for simulation calculation Bending roller force regulation and control effect to Gap crown under conditions of the equivalent width of different steel.And then calculate at different operating The regulated quantity of the bending roller force of the planisher working roll under roller roll shifting value and different steel equivalent width, and set up data base.On-the-spot Staff just can find out the bending roller force regulated quantity under different operating mode rapidly by inquiry data base, and to planisher work The bending roller force making roller is adjusted, and not only increases work efficiency and production efficiency, but also improves the plate shape of smooth product Qualification rate.The qualification rate of its flat line production board shape is improve more than 15% by the embodiment of the present invention.

The planisher work roll bending power control method of embodiment of the present invention offer and device, according to 6 sub symmetry multinomials Curve shape of working roll roll shifting value under the conditions of roll shifting and variable quantity thereof under different steel width conditions to actual roll gap The affecting laws of effective convexity, in conjunction with bending roller force affecting laws to actual Gap crown under different steel width conditions, structure Build the accounting equation of the bending roller force regulated quantity of working roll, and by the bending roller force regulated quantity that calculated by this accounting equation to not It is adjusted with the bending roller force of the planisher working roll under working roll roll shifting value and different steel equivalent width, effectively compensates for The change of the Gap crown caused by the change of working roll roll shifting value, thus improve the planisher control effect to strip shape quality, And then improve the plate shape qualification rate of smooth product.Owing to the embodiment of the present invention is according to using 6 sub symmetry polynomial curve roll formings The analysis that carried out of the strip shape quality Volume control of planisher, roll shifting value and the strip width the two key ginseng to working roll Number has carried out segment processing, and the compensation dosage medelling of the bending roller force under different operating modes is supplied to field personnel, not On the basis of needing to carry out interim calculating operation, it is possible to complete the regulation to bending roller force, no according to on-the-spot different operating modes Reduced by only the labor intensity of staff, but also quickly solve the planisher using 6 sub symmetry polynomial curve roll formings The change of working roll roll shifting value strip shape quality affected problem, improve production efficiency and product strip shape quality.

It should be noted last that, above detailed description of the invention only in order to technical scheme to be described and unrestricted, Although the present invention being 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 deviating from the spirit and scope of technical solution of the present invention, it all should be contained In the middle of scope of the presently claimed invention.

Claims (4)

1. a planisher work roll bending power control method, it is characterised in that including:

Obtain equivalent roll shifting value S that planisher working roll is current₁；

Obtain the planisher working roll roll shifting value equivalent roll shifting value S before regulation₀；

Obtain the equivalent width B of strip steel；

Obtain bending roller force regulation and control effect D (B) to Gap crown under conditions of equivalent width B；

Acquisition expression formula is r (x)=ax⁶+bx⁴+cx²6 sub symmetry multinomial roll shape curves；

According to described roll shape curve, S₁、S₀, B and D (B), calculate planisher working roll according to the accounting equation of bending roller force regulated quantity Δ F Bending roller force regulated quantity Δ F；Wherein, described accounting equation is:

The bending roller force of described planisher working roll is adjusted by the regulated quantity Δ F according to being drawn by described accounting equation；

Wherein, equivalent roll shifting value S that described acquisition planisher working roll is current₁Including:

Obtain roll shifting value C that planisher working roll is currently practical₁；

Obtain unidirectional range S of planisher working roll roll shifting_M；

According to described C₁With described S_M, according to S₁Accounting equation, calculate S₁；Wherein, described accounting equation is:

$S_1=\[\frac{5C_1}{S_M}+\frac{1}{2}\]\left(\frac{S_M}{5}\right);$

The described acquisition planisher working roll roll shifting value equivalent roll shifting value S before regulation₀Including:

Obtain the planisher working roll roll shifting value actual roll shifting value C before regulation₀；

Obtain unidirectional range S of planisher working roll roll shifting_M；

According to described C₀With described S_M, according to S₀Accounting equation, calculate S₀；Wherein, described accounting equation is:

$S_0=\[\frac{5C_0}{S_M}+\frac{1}{2}\]\left(\frac{S_M}{5}\right);$

The equivalent width B of described acquisition strip steel includes:

Obtain the developed width B of strip steel_S；

According to described B_S, according to the accounting equation of B, calculate B；Wherein, described accounting equation is:

$B=\[\frac{B_s}{400}+\frac{1}{2}\]\×400.$

2. the method for claim 1, it is characterised in that also include: calculated in different works by described accounting equation Make the bending roller force regulated quantity Δ F of described planisher working roll under roller roll shifting value and different steel equivalent width, and set up data Storehouse；

The bending roller force of described planisher working roll is adjusted by the regulated quantity Δ F that described basis is drawn by described accounting equation, Including: inquire about the described data base roller to the planisher working roll under different operating roller roll shifting value and different steel equivalent width Power is adjusted.

3. a planisher work roll bending apparatus for adjusting force, it is characterised in that including:

First data acquisition module, for obtaining equivalent roll shifting value S that planisher working roll is current₁；

Second data acquisition module, for obtaining the planisher working roll roll shifting value equivalent roll shifting value S before regulation₀；

3rd data acquisition module, for obtaining the equivalent width B of strip steel；

4th data acquisition module, for obtaining bending roller force regulation and control effect D to Gap crown under conditions of equivalent width B (B)；

5th data acquisition module, being used for obtaining expression formula is r (x)=ax⁶+bx⁴+cx²6 sub symmetry multinomial roll shape curves；

Accounting equation acquisition module, for according to described roll shape curve, S₁、S₀, B and D (B), according to bending roller force regulated quantity Δ F's Accounting equation calculates the bending roller force regulated quantity Δ F of planisher working roll；Wherein, described accounting equation is:

Adjustment module, for according to bending roller force to described planisher working roll of the regulated quantity Δ F that drawn by described accounting equation It is adjusted；

Wherein, described first data acquisition module, including:

First data capture unit, for obtaining roll shifting value C that planisher working roll is currently practical₁；

Second data capture unit, for obtaining unidirectional range S of planisher working roll roll shifting_M；

Arithmetic element, for according to described C₁With described S_M, according to S₁Accounting equation, calculate S₁；Wherein, described accounting equation For:

$S_1=\[\frac{5C_1}{S_M}+\frac{1}{2}\]\left(\frac{S_M}{5}\right);$

Described second data acquisition module, including:

First data acquiring unit, for obtaining the planisher working roll roll shifting value actual roll shifting value C before regulation₀；

Second data acquiring unit, for obtaining unidirectional range S of planisher working roll roll shifting_M；

Computing unit, for according to described C₀With described S_M, according to S₀Accounting equation, calculate S₀；Wherein, described accounting equation For:

$S_0=\[\frac{5C_0}{S_M}+\frac{1}{2}\]\left(\frac{S_M}{5}\right);$

Described 3rd data acquisition module, including:

Strip width acquiring unit, for obtaining the developed width B of strip steel_S；

Data processing unit, for according to described B_S, according to the accounting equation of B, calculate B；Wherein, described accounting equation is:

$B=\[\frac{B_s}{400}+\frac{1}{2}\]\×400.$

4. device as claimed in claim 3, it is characterised in that also include:

Database module, for calculating in different operating roller roll shifting value and different steel equivalence by described accounting equation The bending roller force regulated quantity Δ F of the described planisher working roll under width, and set up data base；

Described adjustment module, specifically for inquiring about described data base under different operating roller roll shifting value and different steel equivalent width The bending roller force of planisher working roll be adjusted.