CN101405094B - Cold continuous rolling facility - Google Patents
Cold continuous rolling facility Download PDFInfo
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- CN101405094B CN101405094B CN200780009528.3A CN200780009528A CN101405094B CN 101405094 B CN101405094 B CN 101405094B CN 200780009528 A CN200780009528 A CN 200780009528A CN 101405094 B CN101405094 B CN 101405094B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
- B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/08—Braking or tensioning arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/08—Braking or tensioning arrangements
- B21B39/082—Bridle devices
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- Control Of Metal Rolling (AREA)
Abstract
A cold continuous rolling facility, comprising a tandem rolling machine (11) for joining a plurality of hot rolled coils, correcting distortion of the joined hot rolled coils through a tension leveler (7), removing surface scale by passing them through an acid pickling facility (8), and rolling them continuously by means of two or more rolling machines, is provided, as rolling machines, with one or more work roll shift mills (10) each having a movable up/down work roll which is provided, at the distal end thereof, with a tapered roll crown. Furthermore, an edge drop gauge (2a) is provided between the tension leveler (7) and a tension bridle roll (3) provided on the inlet side of the acid pickling facility (8).
Description
Technical field
The present invention relates to a kind of cold continuous rolling facility for the plate calendering, wherein plate is by a plurality of calender continuous calenderings.
Background technology
So far, a major issue in the plate calendering is to improve so-called " edge decline ", and " edge decline " is that near the plate thickness in marginal portion of fingerboard sharply descends.The known method that addresses this problem is to roll plate with the calender device that is equipped with the working roll moving machine.The working roll moving machine on top, the terminal part of bottom working roll is equipped with the taper bizet, and is provided with control device in order to allow this bizet mobile at the plate width.Fig. 5 is near rapid " edge decline " situation that descends of plate thickness in marginal portion of display board schematically.Here, decline definition of quantity in edge is described.Usually, the edge slippage often is defined as away from poor as the plate thickness between at least two differences at the edge of the plate of benchmark.Particularly, in Fig. 5, when when distance panel edges part X-15 distance and X-115 distance 2 locate to measure plate thickness respectively, the edge slippage is defined as the poor of 2 plate thickness of locating to measure.
Now, X-15 is defined as point apart from panel edges 15mm, X-115 is defined as point apart from panel edges 115mm.In this case, the edge slippage represents with E.In common situation, point is the closer to the panel edges part, and plate thickness is just less, and the edge slippage is used on the occasion of representing in this case.On the contrary, may exist a little the closer to the panel edges part, plate thickness is just larger.In this case, the edge slippage represents with negative value, and this shape is known as edge increase shape.In addition, plate has different edge slippages usually between left side and right side.Therefore, usually measure the edge slippage with two measuring instruments, these two measuring instruments are separately positioned on the left side and right side edge part of plate.
In addition, for cold continuous rolling facility, wherein a plurality of hot calender roll bendings are combined in the entrance side of calender, and should in conjunction with roll bending by acid dip pickle in order to remove surperficial dirt, then with a plurality of calender continuous calenderings that are installed in the cold continuous rolling facility, known is, at the leading portion of series connection calender at least one working roll moving machine is set, and is used for improving the edge and descends.In this case, at least one working roll moving machine is set is known technology at the leading portion of series connection calender.The many known example that uses the edge decline control method of working roll moving machine is disclosed.The example of many known feed forward control methods (hereinafter referred to as FF control) is also disclosed in addition.In the FF control method, the edge decline meter of measuring the edge slippage is arranged on the entrance side of calender, and controls the shift position of working roll moving machine based on measured value.
In addition, patent documentation 1 propose edge decline meter be arranged on cold continuous rolling facility calender entrance side where.This scheme is be used to the calender device that is equipped with coiling output machine (up-coiler), bonding machine and looping machine, and proposes to place before or after bonding machine the wide meter (edge decline meter) of web wheel.Looping machine is movable device, is used for keeping constant tension force.In patent documentation 1, looping machine is arranged on the outlet side of bonding machine, allows calendering continuously when stopping near the bonding machine of carrying out welding job with convenient rolled material (hereinafter referred to as plate) stream.
Owing to looping machine is provided, therefore when the operation of plate partly stops, has also allowed to carry out the measurement of edge slippage.This makes it possible to use walking edge decline meter, and wherein the measurement terminal of edge decline meter is formed on the plate width and walks.Use such edge decline meter accurately to measure.Looping machine also allows plate to arrive the required enough time of calender, thereby makes it possible to the measurement result of reaction rim decline meter in the foundation of rolling condition.
Yet the plate bizet (edge slippage) that the disclosed technology in the patent documentation 1 of should be noted in the discussion above that is based on single roll bending does not have large variation, but the altering a great deal of the edge slippage of the base material (plate) of a roll bending and another roll bending.
[patent documentation 1] JP-A 2002-126811
[patent documentation 2] JP-A 2004-9116
[patent documentation 3] JP-A H5-15911
Summary of the invention
[the technical problem to be solved in the present invention]
In single roll bending, have the relatively large and composition that changes gentle edge slippage (hereinafter referred to as the Long-term Fluctuation composition) and usually mix with the composition that has less and change rapid edge slippage (hereinafter referred to as the short-term fluctuation composition).After a while this respect will be described.Even since when the variation of edge slippage is larger the time of the edge slippage of Long-term Fluctuation composition change slow, so Long-term Fluctuation easy control of components.On the contrary, although the variable quantity less of the edge slippage of short-term fluctuation composition, the edge slippage changes in the time sharply in short-term, therefore is difficult to control the short-term fluctuation composition.Owing to this reason, in the control edge descended, it was very important suppressing short-term fluctuation as far as possible.
The fluctuation of edge slippage as can be known former because: the variation of the plate thickness of plate itself; The certainty of measurement error of measuring instrument; Measuring condition etc.Mainly concentrate on the fluctuation composition that edge that measuring condition causes descends, the invention provides a kind of preferred structural configuration, it can reduce the composition that fluctuates as far as possible.In addition, the invention provides a kind of cold continuous rolling facility, this cold continuous rolling facility effectively uses this structure, realizes the calendering of little edge slippage.In addition, the pruning material for the entrance side calendering panel edges at calender partly is cut the invention provides a kind of cold continuous rolling facility, and this cold continuous rolling facility can improve calendering output by reduce pruning rate as far as possible.
[technical scheme of technical solution problem]
According to the cold continuous rolling facility of claim 1 of the present invention, comprise in conjunction with a plurality of hot calender roll bendings, with tension level(l)er proofread and correct the hot calender roll bending of combination distortion, make the hot calender roll bending remove the surperficial dirt of hot calender roll bending by acid dip pickle and with the equipment of at least two calender continuous calendering hot calender roll bendings.And described cold continuous rolling facility also comprises at least one the working roll moving machine as calender, described at least one working roll moving machine is provided with top mobile work roller and bottom mobile work roller, has the roller bizet of taper in the end of described upper and lower mobile work roller.Described cold continuous rolling facility is characterised in that, is provided with edge decline meter between the tension control roll of the entrance side place of described tension level(l)er and described acid dip pickle setting.
According to the cold continuous rolling facility of claim 2 of the present invention, comprise in conjunction with a plurality of hot calender roll bendings, the hot calender roll bending that makes combination removing the surperficial dirt of hot calender roll bending by acid dip pickle and with the equipment of at least two calender continuous calendering hot calender roll bendings.And described cold continuous rolling facility also comprises at least one the working roll moving machine as calender, described at least one working roll moving machine is provided with top mobile work roller and bottom mobile work roller, has the roller bizet of taper in the end of described upper and lower mobile work roller.Described cold continuous rolling facility is characterised in that, is provided with edge decline meter between the tension control roll of the outlet side place of described acid dip pickle and described acid dip pickle setting.
According to the cold continuous rolling facility of claim 3 of the present invention, comprise in conjunction with a plurality of hot calender roll bendings, make the hot calender roll bending by acid dip pickle remove the hot calender roll bending of combination surperficial dirt, cut away panel edges part and with the equipment of at least two calender continuous calendering hot calender roll bendings with side trimmer.And described cold continuous rolling facility also comprises at least one the working roll moving machine as calender, described at least one working roll moving machine is provided with top mobile work roller and bottom mobile work roller, has the roller bizet of taper in the end of described upper and lower mobile work roller.Described cold continuous rolling facility is characterised in that, is provided with edge decline meter between the tension control roll of the outlet side place of described side trimmer and described side trimmer setting.
The cold continuous rolling facility of claim 4 of the present invention be according to claim 1-3 in each described cold continuous rolling facility, it is characterized in that described edge decline meter is running type edge decline meter.
The cold continuous rolling facility of claim 5 of the present invention be according to claim 1-4 in each described cold continuous rolling facility, it is characterized in that, examining apparatus for spot weld and travel distance meter are set near described edge decline meter, and described examining apparatus for spot weld and travel distance meter are arranged in before the edge decline meter and arbitrary position afterwards.
The cold continuous rolling facility of claim 6 of the present invention is cold continuous rolling facilities according to claim 5, it is characterized in that, also comprise: tracking means, the data that described tracking means obtains based on described examining apparatus for spot weld and travel distance meter are carried out the tracking of the data that edge decline meter detects; Smoothing apparatus, described smoothing apparatus are carried out the smoothing processing of the data that described edge decline meter detects; With mobile setting device, described mobile setting device is set the roller shift position of described working roll moving machine based on the output of described smoothing apparatus.
The cold continuous rolling facility of claim 7 of the present invention be according to claim 1 with 2 in each described cold continuous rolling facility, it is characterized in that, determine to use the pruning rate at side trimmer shear plate edge based on the measured data of described edge decline meter.
The cold continuous rolling facility of claim 8 of the present invention is cold continuous rolling facilities according to claim 6, it is characterized in that, presets the roller shift position of described working roll moving machine based on the output of described smoothing apparatus.
The cold continuous rolling facility of claim 9 of the present invention is cold continuous rolling facilities according to claim 6, it is characterized in that described mobile setting device is carried out FEEDFORWARD CONTROL based on drop data under the edge of described smoothing apparatus output to the shift position of upper and lower working roll.
[beneficial effect of the present invention]
Prolonging in the device according to colding pressing of claim 1 of the present invention, edge decline meter is arranged on after the tension level(l)er, and tension control roll be arranged on edge decline meter near.Therefore, can be after tension level(l)er be proofreaied and correct the shape of base material roll bending (plate) and applying in the situation of tension force suppressing plate vibration and measure the edge slippage.Therefore, measure error can be reduced, and can suitably carry out calendering.
Prolonging in the device according to colding pressing of claim 2 of the present invention, edge decline meter is arranged on after the acid dip pickle, and tension control roll be arranged on edge decline meter near.Therefore, can after acid dip pickle is removed surperficial dirt and in the situation that applies tension force to plate, measure the edge slippage.Therefore, measure error can be reduced, and can suitably carry out calendering.
Prolonging in the device according to colding pressing of claim 3 of the present invention, edge decline meter is arranged on after the side trimmer, and tension control roll be arranged on edge decline meter near.Therefore, can make plate width substantially constant by side trimmer after and in the situation that applies tension force inhibition vibration to plate, measure the edge slippage.Therefore, measure error can be reduced, and can suitably carry out calendering.
Prolonging in the device according to colding pressing of claim 4 of the present invention, using running type edge decline meter.Therefore, can measure the edge slippage by moving back and forth measurement terminal at the plate width.Therefore, the quantity of measurement terminal can be reduced, and also equipment cost can be reduced.
Prolonging in the device according to colding pressing of claim 5 of the present invention, examining apparatus for spot weld and travel distance meter be arranged on edge decline meter near.Therefore, the accurate tracking of drop data can be implemented under the edge of measurement.Therefore, measure error can be reduced, and calendering can be suitably carried out.
Prolonging in the device according to colding pressing of claim 6 of the present invention, cold continuous rolling facility is provided with tracking means, smoothing apparatus and mobile setting device.Therefore, can carry out calendering based on the data of removing the short-term fluctuation composition.The short-term fluctuation composition has less edge slippage to be changed, but changes in the time sharply in short-term.Therefore, can carry out the decline control of high-precision edge.
Prolonging in the device according to colding pressing of claim 7 of the present invention, determining to use the pruning rate at side trimmer shear plate edge based on the measured data of described edge decline meter.Therefore, pruning rate can be reduced to minimum degree according to the edge slippage.Therefore, can realize the calendering of high yield.
Prolonging in the device according to colding pressing of claim 8 of the present invention, presetting the roller shift position of described working roll moving machine based on the output of described smoothing apparatus.Therefore, can descend to arrange the roller shift position with respect to the edge of rolled material.
Prolonging in the device according to colding pressing of claim 9 of the present invention, based on drop data under the edge of described smoothing apparatus output the working roll moving machine is being carried out FEEDFORWARD CONTROL.Therefore, can suitably carry out calendering.
Description of drawings
Fig. 1 is the schematic diagram that shows according to the example of cold continuous rolling facility of the present invention;
Fig. 2 is the schematic diagram of the example of the error that shows that the measurement of the thickness of the plate be in heeling condition produces;
Fig. 3 is the chart that shows when the measure error that occurs during H=2.5 in the example shown in Figure 2;
Fig. 4 is the chart that shows the variation of rolling the edge decline that causes;
Fig. 5 is the cutaway view that shows that the edge descends;
Fig. 6 is the schematic diagram of example of the change of shape of display board marginal portion;
Fig. 7 is the chart that shows the example of the edge decline fluctuation in the single roll bending;
Fig. 8 shows the chart of removing the example of short-term fluctuation composition under the edge the drop data;
Fig. 9 is the chart of procedure for displaying example, in this process, the rolling average width in the rolling average is converted to the calendering length of outlet side 200m; With
Figure 10 is the schematic diagram of example of FF control that shows the cold continuous rolling facility of embodiment according to the present invention 4.
The specific embodiment
Fig. 1 shows the according to an embodiment of the invention example of cold continuous rolling facility.In this cold continuous rolling facility, plate is supplied out from up-coiler 5, and then plate is continuously by bonding machine 6, looping machine 15, tension control roll 3, tension level(l)er 7, tension control roll 3, acid dip pickle 8, tension control roll 3, looping machine 15, side trimmer 9, looping machine 15, tension control roll 3 and series connection calender 11.Afterwards, with SHAPE DETECTION device 12 measuring plate shape shapes.Then, plate twines again by dividing scissors 13 and by rewinder 14.
Each up-coiler 5 is to send base material roll bending (plate) to the device of calendering pusher side.Bonding machine 6 is the devices that harden and be combined a plurality of.Each looping machine 15 is plate storage devices of the sufficiently long plate that storage can continuous calendering.Each tension control roll 3 is the devices that apply onboard tension force.Tension level(l)er 7 is devices of distortion of the shape of correcting plate.Acid dip pickle 8 is devices of removing surperficial dirt from a plurality of plates that sequentially combine.Side trimmer 9 is the devices that cut away the panel edges part.Series connection calender 11 is with the device that is installed in a plurality of calender continuous calendering plates in the series connection calender 11.SHAPE DETECTION device 12 is devices of the shape after the inspection plate calendering.Dividing scissors 13 is cutting plates in order to obtain the device of predetermined length.Rewinder 14 is coiling plate and the device that transmits the plate of having reeled.In Fig. 1, reference marker 2a-2d represents edge decline meter, and reference marker 4a-4d represents examining apparatus for spot weld.
In addition, working roll moving machine 10 is arranged on the leading portion of series connection calender 11.Working roll moving machine 10 is the calenders that comprise the working roll mobile controller.In the working roll mobile controller, the taper bizet is arranged on the roll end of top, bottom working roll, thereby allows the working roll mobile controller to move at the plate width.
In edge decline meter 2a-2c and examining apparatus for spot weld 4a-4d that Fig. 1 shows, edge decline meter 2a and solder joint 4a are used for the cold continuous rolling facility of present embodiment.Particularly, X-ray edge decline meter 2a is arranged on the downstream that is positioned at tension level(l)er 7 and is positioned at the position in the downstream of a tension control roll 3.An aforementioned tension control roll 3 is arranged on before the acid dip pickle 8.Examining apparatus for spot weld 4a and travel distance meter (not shown) are arranged on before the tension level(l)er 7.Edge decline meter 2a is the device of measuring the edge slippage of plate.Examining apparatus for spot weld 4a is the device of the pad that is welded together of check-out console.The travel distance meter is the device of measuring the travel distance of plate.
Fig. 2 shows that in X-ray edge decline meter 2a, X-ray generation terminal 21 and X-ray receive the above and below that terminal 22 is arranged on base material.By measuring the thickness that comes check-out console from terminal 21 occurs to the emission measure of the X-ray that receives terminal 22.In examining apparatus for spot weld 4a, as described in patent documentation 2, near the solder joint of plate, form perforation, with the position of perforation with detections such as photovoltaic elements.In addition, the measurement of travel distance meter has the travel distance as the plate of the solder joint of benchmark.For example, the automatic synchronization motor is installed as the drive motors of tension control roll shown in Figure 13, therefore, can be come according to the revolution of the roller diameter of tension control roll 3 and drive motors the travel distance of computing board.
Examining apparatus for spot weld 4a and travel distance meter are used for drop data under the edge of tracking measurement accurately.Particularly, implement in the situation of FF control in the working roll moving machine 10 edges decline by the back, accurate tracking is necessary.This is can cause decline shape in edge to become at last worse because of the FF control based on non-accurate tracking data.
Examining apparatus for spot weld 4a is arranged on the entrance side of tension level(l)er 7, based on following reason.Condition of work, for example the amount of pushing of tension level(l)er 7 can change between the part before solder joint and the part behind the solder joint, when this plate thickness of 2 differs from one another.Examining apparatus for spot weld 4a can be used for following the tracks of the output of X-ray edge decline meter 2a.In addition, the installation site of examining apparatus for spot weld 4a and travel distance meter is not limited to above-mentioned position.Examining apparatus for spot weld 4a and travel distance meter can be installed in before or after the tension control roll 3, and near tension control roll 3.In addition, decline meter in edge is not limited to X-ray edge decline meter.
Now, briefly explain measure error with reference to Fig. 2.When panel vibration, plate shape defect etc. causes Lamb wave to move, such situation can occur: the plate thickness of the part between two measurement terminal is measured the thickness of plate 1 during from the horizontal by an angle.In this case, the plate thickness H ' of measurement is different from actual plate thickness H.In this case, measure error δ H is expressed as follows, wherein the gradient of θ display plate.
δH＝H’-H＝H/cos(θ)-H
Relation when Fig. 3 shows hypothesis H=2.5mm between tilt angle theta and the measure error δ H.Fig. 3 shows that the measure error that roughly produces during the angle of cant angle theta=5 ° when plate is roughly δ H=10 μ m.Above-mentioned error percentage is as for example corresponding with the vibration of plate fluctuation composition.
How the following describes base material edge slippage appears in the final products usually.Fig. 4 is the chart that shows the example of the relation between the edge slippage Ein that rolls front entrance side place and the edge slippage Eout that rolls rear outlet side place.Horizontal axis represents to roll the edge slippage Ein at front entrance side place, and vertical axis represents the edge slippage Eout at five rear outlet side places of series connection calendering.Line segment shown in Figure 4 represents to measure mean value, and the total calendering of expression reduces the data when being roughly 75%.Note that these data comprise the mixer element with different rolling conditions, for example plate thickness and the rolling velocity of material (normally carbon steel), plate width, entrance side.In addition, working roll is straight roller, and does not carry out edge decline control.
Fig. 4 shows between the edge slippage Ein that rolls front entrance side place and the edge slippage Eout that rolls rear outlet side place to have very strong relation.When the edge slippage Ein at entrance side place before the calendering changed 10-μ m, the edge slippage Eout at outlet side place expection roughly changed 2.4 μ m after the calendering.In the situation of the silicon steel plate that strictly satisfies the edge slippage, the edge slippage of final outlet side often need to strictly be limited in the 5 μ m.Consider these situations, the variation of the roughly 10-μ m of the edge slippage of entrance side is very important on the impact of product quality.
More specifically, suppose that the margin of error shown in Figure 2 adopts FF control when being actual edge slippage.In this case, even when not having the edge to descend in the base material (plate), the FF control with measure error causes the variation of about 2.4-μ m.Therefore, because product needed edge slippage carries out stricter control, so the vibration of measure portion and out-of-shape must remain on the low degree of trying one's best.For this point is described, in the present embodiment, edge decline meter is arranged on and can be suppressed to the as far as possible position of low degree to error percentage, this error percentage comes from measurement section office panel vibration and out-of-shape.Therefore, this can accurately measure edge decline in minor swing ground.
As mentioned above, edge decline meter 2a is arranged between tension level(l)er 7 and the tension control roll 3, and working roll moving machine 10 is carried out FF control, can obtain following advantage.
1) can in the situation that tension force applies onboard and the vibration of plate is reduced, carry out the measurement that the edge descends.
2) can after the shape correction of base material roll bending (plate), carry out the measurement that the edge descends.Therefore, the measure error that causes of panel vibration and base material out-of-shape can be less.This has realized suppressing the effect of edge slippage short-term fluctuation.
Example 1
In edge decline meter 2a-2c and examining apparatus for spot weld 4a-4d shown in Figure 1, edge decline meter 2b and solder joint 4b are used for the cold continuous rolling facility of example 1 of the present invention.Particularly, X-ray edge decline meter 2b is arranged on the position between the outlet side of acid dip pickle 8 and tension control roll 3.Aforementioned tension control roll is arranged between the looping machine 15 that acid dip pickle 8 and acid dip pickle 8 place later.In addition, examining apparatus for spot weld 4b and plate travel distance meter are arranged on X-ray edge decline meter 2b and between near the acid dip pickle 8 the X-ray edge decline meter 2b.Omitted the explanation identical with above-mentioned " preferred forms " in the example 1.
In above-mentioned " preferred forms ", has such situation: measure the edge when there is the oxidation dirt in the plate surface and/or has surface blot when hot calender and after the hot calender and descend.In this case, the oxidation dirt that exists on the plate surface and/or surface blot can cause the fluctuation of the X-quantity of X-rays X of the scattering of X-ray when the edge descend to be measured and emission, the error that finally causes the edge to descend and measure.This error is the random noise error, is considered to edge decline and measures the reason of fluctuation a middle or short term.
By contrast, in this example 1, X-ray edge decline meter 2b is installed in the position after the acid dip pickle 8, and this allows to carry out the measurement of edge slippage after the surperficial dirt of removing plate.Therefore, the scrambling of the surface configuration of plate causes the problem of measure error to be eliminated.In addition, because plate has passed through tension level(l)er 7, the error that the shape of base material (plate) causes no longer is problem.Naturally, measure the edge slippage in the situation of tension force because apply to plate at tension control roll 3, therefore vibration can be suppressed to less degree.Therefore, these error components can be prevented.
In addition, the side trimmer 9 that cuts away panel edges part is arranged on after the acid dip pickle 8 in the common cold continuous rolling facility.Side trimmer 9 is used for the part of the edge decline difference of removal product (this product needed is more strictly controlled the edge slippage).More specifically, it is difficult descending at the edge of the control panel marginal portion, Yanzhong of colding pressing, and therefore removes the panel edges part with side trimmer 9.In addition, when the calendering execution became thin plate to plate, the whole zone of plate all reduced sometimes to be cracked in the marginal portion of plate than rolling with high calendering.For fear of this situation, two marginal portions also need to be cut.Below, claim this plate for pruning material.Typical pruning material is electromagnetic steel plate.
The amount that side trimmer 9 is pruned greatly affects output, expects that therefore pruning rate is as far as possible few.A method that realizes this purpose is to measure the edge slippage before pruning, then measurement result is reflected in the pruning rate.For example, when the edge of base material slippage hour, trim width is just little.In addition, having the shape of base material is the situation of edge raised shape.This shape mainly is that the wearing and tearing of the part of the panel edges in the stack in the hot calender cause.This shape has large impact to the minimizing of the edge slippage of the Yanzhong of colding pressing, and therefore can set less trim width.
Yet, please note that the edge slippage changes along the longitudinal direction of plate.Particularly, in the fore-end of the base material around binding site, the variable quantity of edge slippage is greater than the variable quantity of another part edge slippage of plate.Therefore, when determining pruning rate, the measurement length of the weak point that the edge descends causes the scrambling of trim width, and this has higher possibility.
For example, be X-ray edge decline meter 2b unsuitable before near side trimmer 9, because this placement can not leave enough measurement length.Yet in this example 1, a looping machine 15 is present in the outlet side of X-ray edge decline meter 2b.Therefore, can before pruning, carry out the measurement that the edge descends, and have the sufficiently long distance corresponding with the quantity of ring.As a result, can determine suitable trim width.
As mentioned above, in the cold continuous rolling facility according to example 1, X-ray edge decline meter 2b is arranged on before the side trimmer 9, and one in a plurality of looping machines 15 is arranged on before the side trimmer 9, and an outlet side that is arranged on X-ray edge decline meter 2b in a plurality of looping machine 15.Therefore, can provide effective trim width for pruning material, this can be called the second effect.Note that equally in above-mentioned " preferred forms ", a looping machine 15 is arranged on the outlet side of edge decline meter 2a.Therefore, can know, can provide effective trim width for pruning material.
Example 2
In edge decline meter 2a-2c and examining apparatus for spot weld 4a-4d shown in Figure 1, edge decline meter 2c and solder joint 4c are used for the cold continuous rolling facility of example 2 of the present invention.Particularly, X-ray edge decline meter 2c is arranged on the position between the entrance side of the outlet side of side trimmer 9 and a tension control roll 3.In addition, in " preferred forms " and " example 1 ", examining apparatus for spot weld and plate travel distance meter be positioned at X-ray edge decline meter 2c near.Under normal conditions, examining apparatus for spot weld 4c is arranged on before the side trimmer 9.Reason is that the position of cutting tool must change when the plate of different in width connects.Note that with examining apparatus for spot weld 4c be a kind of naturally suitable method of using examining apparatus for spot weld 4c as the examining apparatus for spot weld of following the tracks of.
Yet the vibration that pruning place produces can be sent to plate, causes the fluctuation of the measurement data of edge slippage.Therefore, preferably, the restraint device of confinement plate vibration is set after side trimmer 9 and before the X-ray edge decline meter 2c.For example, respectively from top and below the pinch rolls (not shown) of stripper plate be set up.In addition, a looping machine 15 is arranged on after the tension control roll 3.In example 2, omitted the explanation of the content identical with " example 1 " with " preferred forms ".
Usually, the panel edges shape of plate width and single hot calender plate changes.Fig. 6 is the variation of the panel edges shape of display board schematically.Along with the variation of panel edges shape, edge decline meter is poor at a distance of the plate thickness of the position of preset distance of the benchmark edge of output and plate usually.For example, by measuring and the edge of the plate plate thickness at a distance of the point of X-15 and X-115 distance, the plate thickness by two measurements comes the estimated edge slippage.
In this case, as long as panel edges is as benchmark, to be measured some X-15 and X-115 move along the shape of the panel edges shown in the dotted line of Fig. 6.Now, suppose under above-mentioned state to carry out the edge control that descends, and outlet side place's point X-15 of presenting a theatrical performance as the last item on a programme at last of hypothesis and the edge slippage E between the X-115 can be controlled to predetermined tolerance, for example 5 μ m and less.
When the end user used above-mentioned plate, constant with respect to the longitudinal direction maintenance of plate for the width that makes plate, plate was cut, and for example along trim lines Tr cutting shown in Figure 6, then is used.In this case, have the part greater than the edge slippage of predetermined tolerance, for example part A shown in Figure 6 may occur.Therefore, guarantee that product quality is very difficult.The method of avoiding this problem is mobile trim lines Tr in the plate.Yet this can cause yield reducation.
The problems referred to above of edge decline control are to come from the panel edges of setting the benchmark that decline is measured as the edge, and it is to carry out at the wide plate of the vicissitudinous plate of tool that this edge decline is measured.The scheme that addresses this problem is to measure the plate width, then sets the center benchmark that decline is measured as the edge of plate width, and is disclosed such as patent documentation 3.Yet, same, in this case, still have problems.
In Fig. 6, the shape of the left hand edge of plate represents that with Le the edge of opposite side is that right hand edge represents with Re.Suppose that shape Le is fully identical with Re.By the plate width of measurement along every place of the longitudinal direction of plate, the center that therefore obtains is defined by plate width center, represents this plate width center with Cn.Plate width center C n moves according to the plate change width at every place shown in Figure 6.In this example, set the plate width center C n benchmark that decline is measured as the edge and produce and set panel edges as the identical result of the situation of benchmark.Yet in the plate of reality, the panel edges shape of plate left-hand side is different from the panel edges shape of plate right-hand side.Therefore, even when having determined plate width center C n by measuring the plate width, plate width center C n changes.Therefore, set the plate width center C n benchmark that decline is measured as the edge that changes and locate to produce aforesaid problem the end user sometimes.
Therefore, when needs had the plate of little edge slippage, this just became serious problem.An example of this plate is electromagnetic steel plate.
Yet, in example 2, before descend measuring at the edge, use side trimmer 9 to prune, thus so that the plate width constant that becomes after pruning.Therefore, there is no need to consider the variation of plate width and panel edges shape.Therefore, can carry out the decline control of easier edge, realize high accuracy control.In addition, can make work of high quality, except the zone from panel edges to the edge decline measurement point of close panel edges, the edge slippage of product can be guaranteed.Therefore, can carry out required strict edge decline control to calender device, especially for the calender device of electromagnetic steel plate.
Note that in " preferred forms " in the example shown in " example 1 " and " example 2 ", edge decline meter 2a, 2b and 2c use respectively and individually.Alternatively, for example, can arrange edge decline meter 2a by combination, 2b and 2c carry out calendering.For example, " preferred forms " layout of showing arrangement combinations that can show with " example 1 ".The arrangement combinations that the layout that " example 1 " shows can show with " example 2 ".The arrangement combinations that the layout that " preferred forms " shows can show with " example 2 "." preferred forms ", the layout that " example 1 " and " example 2 " shows can be combined in together.
Example 3
In the cold continuous rolling facility of embodiment according to the present invention 3, removed the short-term fluctuation composition of drop data under the edge of measuring, and the Long-term Fluctuation composition is controlled.
" preferred forms ", the explanation in " example 1 " and " example 2 " relate to the structure of the generation of the fluctuation that suppresses edge decline measurement data, particularly suppress the generation of short-term fluctuation composition.This explanation also relates to the decline control of the simple and high-precision edge of realization.Yet, in this example, will illustrate based on said structure and effectively use the control device of this structure.Unconventional ground, well known examples specifically disclose the processing method of drop data under the edge of measurement.
Fig. 7 shows the example that single roll bending inward flange descends and fluctuates.In Fig. 7, horizontal axis represents the calendering length according to the length computation of the final outlet side of 5-platform series connection calendering.Vertical axis represents: with the active side edge slippage E-WS before the synchronous and corresponding calendering of calendering length; With similar calendering driving side edge slippage E-DS before.The plate thickness of entrance side and the plate thickness of finished product are respectively 2.3mm and 0.64mm usually.Example shown in the figure is the example of calendering ordinary carbon steel.
Fig. 7 shows that active side edge slippage E-WS is different from driving side edge slippage E-DS.Can see from Fig. 7: large and Long-term Fluctuation composition; With little, short-term and rapid fluctuation composition.Simultaneously, in move the situation of carrying out edge decline control by working roll, can not implement sufficient response according to the fluctuation of short-term fluctuation composition, because translational speed is low.Note that common translational speed is about 2mm/sec and lower.
Usually, the rolling velocity of outlet side is greatly about 600m/min-1200m/min.Therefore, rolling velocity is greater than aforementioned translational speed.Owing to this reason, be clear that even carry out FF control when the edge to the short-term fluctuation composition descends to fluctuating, working roll moves the compensation that also is not enough to FF control.On the contrary, mobile response time-delay causes the amplification of dispersing and/or fluctuating of control system sometimes.
Fig. 8 shows the example of the removal short-term fluctuation composition that addresses the above problem.Thick line INVentD carries out the example that Fourier transformation obtains by the fluctuation that descends of the edge to the entrance side place of driving side, and the fluctuation that descends of the edge at the entrance side place of driving side is converted into the about L=1500m of outlet side calendering length.In the example that thick line INCentD represents, the fluctuation composition in the three or more cycles in the analyst coverage is removed.The fine rule EDentD of drop data is as benchmark under the edge of the measurement of demonstration same range as.Like this, the short-term fluctuation composition is removed, and holding manageable Long-term Fluctuation composition can be extracted out.
As mentioned above, in example 3, the short-term fluctuation composition of measurement is removed, and the Long-term Fluctuation composition is carried out FF control.Therefore, can carry out the edge control that descends, the control that descends of this edge has less response time-delay, and reliable and precision height.
In addition, compare with the undulate quantity of Long-term Fluctuation composition, the undulate quantity of the short-term fluctuation composition of removal is usually less.In example shown in Figure 8, the undulate quantity of Long-term Fluctuation composition is about 15 μ m on the length of whole roll bending.The undulate quantity of short-term fluctuation composition is about 3 μ m on the length of whole roll bending.With reference to Fig. 4, can estimate that the undulate quantity of the short-term fluctuation composition of 3 μ m is about 1 μ m on the impact of final edge slippage.This is very little value, can not consider.
Remove short-term fluctuation (hereinafter referred to as smoothing processing) afterwards, can obtain the effect of example 3 by control fluctuation composition.Smoothing processing not only can be carried out by Fourier transformation, and can or use the part approximation method of lowfunction (for example square or cubic function) to carry out by the rolling average method.For smoothing processing, can adopt any method in the known document.
In addition, the scope of the fluctuation composition of removing by Fourier transformation can rule of thumb be determined or be definite according to actual measurement data, thereby so that scope to be removed does not become practical problem.This can be applied to set in the rolling average method rolling average width equally.In Fig. 9, thick line MAentD shows that carrying out the rolling average width with the rolling average method processes, and simultaneously rolling average width is converted into the example of the outlet side calendering length of 200m.In addition, fine rule EDentD is as benchmark, and the rolling average of demonstration same section.In two kinds of situations, advantageously, the short-term fluctuation composition is removed.
Yet for measurement data being carried out above-mentioned processing, the measurement data before the calendering must be recorded predetermined period of time.Therefore, decline meter in edge is installed in the position that the front data of calendering can be recorded predetermined period of time.The entrance side of the looping machine of preferred installation site before being installed in calender.Therefore, can be recorded and keep along the longitudinal direction of plate and corresponding to drop data under the edge of the storage length of looping machine.In addition, guaranteed the processing time of smoothing processing.
As mentioned above, by carrying out above-mentioned processing, can realize having the control system of lower response time-delay.Also can realize high accuracy and reliably control.In addition, as patent documentation 1, this result can be reflected in default, the FF control of working roll position.
Example 4
In example 4 of the present invention, illustrate that with reference to Figure 10 in example 4, drop data is employed FF control under the edge of the measurement of removal short-term fluctuation composition.X-ray edge decline meter 2c is arranged between side trimmer 9 and the tension control roll 3.At the outlet side of side trimmer 9, pinch rolls 19 and the examining apparatus for spot weld 4c of the panel vibration when reducing to prune is set sequentially.More specifically, automatic synchronization motor etc. is set to pinch rolls 19, thus the rotation of measuring roller, in order to obtain the travel distance of plate.
The output of pinch rolls 19, examining apparatus for spot weld 4c and X-ray edge decline meter 2c is imported in the tracking means 16.In this tracking means 16, from the solder joint of the plate that is defined as zero distance point, the measurement data of the edge slippage of the travel distance of Continuous Tracking and data board.The data of record are input in the smoothing apparatus 17, the wherein separated and extraction of Long-term Fluctuation composition.The Long-term Fluctuation composition is inputted in the mobile setting device 18.In working roll moving machine 10, based on the shift position that is input to data in the mobile setting device and sets and control top, bottom working roll.
In Figure 10, the shift position command signal Δ SE of archaism top, bottom working roll represents with two lines respectively.This refers to that edge decline is carried out at two edges on the plate width measures, and controls independently the edge for both sides and descends.Yet, note that measurement signal line E ' represents with single line.
By using some equatioies, the shift position that briefly explains in the mobile setting device 18 is set and control.
Here, the below shows variation delta E and the shift position variation delta S of the Long-term Fluctuation composition of edge decline how to control entrance side
E, this shift position variation delta S
ETo become the shift position command signal of control variation delta E.
For example, can easily obtain influence coefficient according to actual measurement data.In addition, when the calendering of record and level and smooth part finishes, record drop data under the new edge.Naturally, drop data under the edge of new record is carried out smoothing processing, and continue FF control.
The below Δ E that will remark additionally.T represents the current time.Send next control instruction after time cycle Δ T, the edge slippage at time T place represents with E (T).In addition, the edge slippage after the time cycle Δ T represents with E (T+ Δ T).Therefore, Δ E has following implication.
ΔE＝E(T)-E(T+ΔT)
Note that drop data E (t) under the edge that uses in this example is the data crossed of smoothing processing, thus so that the measurement data of the data of using in this example before being different from.Drop data E ' (t) represents under the measurement time series edge of entrance side.Then, edge slippage E (t) in this example has following implication.
E (t)={ smoothing processing } E ' (t)
In addition, Figure 10 has also shown the situation of carrying out FB control.In the situation of FB control, determine the mobile variable quantity of control with FB control device 20, thus so that edge slippage e and object edge slippage e that outlet side is measured
0Between the equation of difference below satisfying.
When carrying out FF control and FB control simultaneously, by increasing together Δ S shown in Figure 9
eWith Δ S
ECarry out shift position control.
In the above description, the FF control device is main.Edge slippage in this situation is preferably in the identical measurement point continuous measurement with respect to the longitudinal direction of plate.On the contrary, be used for presetting the situation that put the mobile roller seat in the plane, there is no need to measure continuously the edge and descend.
For example, decline meter in running type edge is as edge decline meter.Decline meter in running type edge is to allow measurement terminal at edge decline meter that the plate width is walked.More specifically, receive terminal so that the plate width in the measure portion of necessity moves back and forth by mobile X-ray generation terminal and X-ray, measure the edge slippage.Owing to have this structure, when carrying out in two positions of the right hand of plate and left-hand side respectively when measuring, only use two X-ray emission terminals.Therefore, can reduce the quantity of the measurement terminal of edge decline meter, thereby save cost.
For example, in the situation of using running type edge decline meter, the thickness that each place among some X15 and the some X115 is measured is stored, and is used for predetermined plate length, in order to calculate the average plate thickness of each point.Then, poor between the average plate thickness that therefore obtains to calculate, and as average edge slippage.Based on this average edge slippage, the working roll of next roll bending (plate) moves and is determined and presets.Therefore, even when using running type edge decline meter, also there is no need the walking of stop board.More properly, keep walking by allowing plate, can obtain along the mean value of the longer part of calendering length direction.Therefore, it is preferred using running type edge decline meter.
In addition, in the situation of default shift position, it is important carrying out default based on average edge slippage.Part around the solder joint is corresponding to front side and the rear side end of the plate of hot calender, thereby so that the calendering of this part becomes non-constant.Therefore, in many examples, the variable quantity that the edge descends usually becomes larger than other parts.In the situation based on the default shift position of a point of the great fluctuation process composition of measuring only, it is too large or too little that the shift position becomes easily.
Suppose that the shift position is from based on the change in location of the above-mentioned fluctuation composition situation to the appropriate location.In this case, a problem appears.More specifically, mobile low-response, the part that can not suitably control becomes longer.On the contrary, default by based on the average edge slippage of fluctuation composition can avoid the problem of out of contior longer part as far as possible.
Industrial applicibility
The present invention is applied to cold continuous rolling facility, and this cold continuous rolling facility is used for the plate calendering and rolls continuously plate with a plurality of calenders.
Claims (9)
1. cold continuous rolling facility, comprise in conjunction with a plurality of hot calender roll bendings, proofread and correct the distortion of the hot calender roll bending of combination with tension level(l)er, make the hot calender roll bending remove the surperficial dirt of hot calender roll bending by acid dip pickle, with the equipment with at least two calender continuous calendering hot calender roll bendings, and described cold continuous rolling facility comprises at least one working roll moving machine, described working roll moving machine is as a calender, described at least one working roll moving machine is provided with top mobile work roller and bottom mobile work roller, the roller bizet that has taper in the end of described upper and lower mobile work roller
Wherein at described tension level(l)er (7) be arranged between the tension control roll (3) at entrance side place of described acid dip pickle (8) and be provided with edge decline meter (2a),
Wherein, described cold continuous rolling facility also comprises:
Tracking means, described tracking means is based on the tracking that is arranged on data that near the described edge decline meter examining apparatus for spot weld and travel distance meter obtain and carries out the data that edge decline meter detects;
Smoothing apparatus, described smoothing apparatus are carried out the smoothing processing of the data that described edge decline meter detects; With
Mobile setting device, described mobile setting device are set the roller shift position of described working roll moving machine based on the output of described smoothing apparatus.
2. cold continuous rolling facility, comprise in conjunction with a plurality of hot calender roll bendings, make the hot calender roll bending remove the surperficial dirt of the hot calender roll bending of combination by acid dip pickle, with the equipment with at least two calender continuous calendering hot calender roll bendings, and described cold continuous rolling facility comprises at least one working roll moving machine, described working roll moving machine is as a calender, described at least one working roll moving machine is provided with top mobile work roller and bottom mobile work roller, the roller bizet that has taper in the end of described upper and lower mobile work roller
Wherein between the tension control roll of the outlet side place of described acid dip pickle and described acid dip pickle setting, be provided with edge decline meter,
Wherein, described cold continuous rolling facility also comprises:
Tracking means, described tracking means is based on the tracking that is arranged on data that near the described edge decline meter examining apparatus for spot weld and travel distance meter obtain and carries out the data that edge decline meter detects;
Smoothing apparatus, described smoothing apparatus are carried out the smoothing processing of the data that described edge decline meter detects; With
Mobile setting device, described mobile setting device are set the roller shift position of described working roll moving machine based on the output of described smoothing apparatus.
3. cold continuous rolling facility, comprise in conjunction with a plurality of hot calender roll bendings, make the hot calender roll bending remove the surperficial dirt of the hot calender roll bending of combination by acid dip pickle, cut away the panel edges part with side trimmer, with the equipment with at least two calender continuous calendering hot calender roll bendings, and described cold continuous rolling facility comprises at least one working roll moving machine, described working roll moving machine is as a calender, described at least one working roll moving machine is provided with top mobile work roller and bottom mobile work roller, the roller bizet that has taper in the end of described upper and lower mobile work roller
Wherein between the tension control roll of the outlet side place of described side trimmer and described side trimmer setting, be provided with edge decline meter,
Wherein, described cold continuous rolling facility also comprises:
Tracking means, described tracking means is based on the tracking that is arranged on data that near the described edge decline meter examining apparatus for spot weld and travel distance meter obtain and carries out the data that edge decline meter detects;
Smoothing apparatus, described smoothing apparatus are carried out the smoothing processing of the data that described edge decline meter detects; With
Mobile setting device, described mobile setting device are set the roller shift position of described working roll moving machine based on the output of described smoothing apparatus.
4. each described cold continuous rolling facility according to claim 1-3, wherein said edge decline meter is running type edge decline meter.
5. each described cold continuous rolling facility according to claim 1-3, wherein said examining apparatus for spot weld and travel distance meter are arranged in before the edge decline meter and arbitrary position afterwards.
6. cold continuous rolling facility according to claim 4, wherein said examining apparatus for spot weld and travel distance meter are arranged in before the edge decline meter and arbitrary position afterwards.
According to claim 1 with 2 in each described cold continuous rolling facility, wherein determine to use the pruning rate at side trimmer shear plate edge based on the measured data of described edge decline meter.
8. cold continuous rolling facility according to claim 1, the roller shift position of wherein presetting described working roll moving machine based on the output of described smoothing apparatus.
9. cold continuous rolling facility according to claim 1, wherein said mobile setting device is carried out FEEDFORWARD CONTROL based on drop data under the edge of described smoothing apparatus output to the shift position of upper and lower mobile work roller.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2006074022A JP4878485B2 (en) | 2006-03-17 | 2006-03-17 | Cold continuous rolling equipment |
| JP074022/2006 | 2006-03-17 | ||
| PCT/JP2007/054884 WO2007108356A1 (en) | 2006-03-17 | 2007-03-13 | Cold continuous rolling facility |
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| CN101405094A CN101405094A (en) | 2009-04-08 |
| CN101405094B true CN101405094B (en) | 2013-03-13 |
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| JP (1) | JP4878485B2 (en) |
| CN (1) | CN101405094B (en) |
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| TWI513523B (en) * | 2014-11-03 | 2015-12-21 | Univ Nat Sun Yat Sen | Hot rolling apparatus |
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| JP5092966B2 (en) * | 2008-07-23 | 2012-12-05 | 住友金属工業株式会社 | Continuous pickling cold rolling equipment and manufacturing method of cold rolled material |
| DE102009054266A1 (en) | 2009-11-23 | 2011-07-21 | SMS Siemag AG, 40237 | Electrolytically descaling and/or pickling cold-rolled and annealed metal strips, comprises guiding the metal strip in a conveying direction through a straightening unit for removing flatness error |
| CN101890435B (en) * | 2010-07-20 | 2012-12-12 | 江苏省沙钢钢铁研究院有限公司 | Automatic convexity and/or wedge control method and system for hot rolling tandem type rolling mill |
| DE102015108060A1 (en) * | 2015-05-21 | 2016-11-24 | Ims Messsysteme Gmbh | Method and device for characterizing a structure of a metal strip or sheet |
| CN106670242B (en) * | 2017-02-09 | 2018-05-04 | 广西南南铝加工有限公司 | The device of the offline Strip Shape of On-line Control |
| CN112742868B (en) * | 2020-12-10 | 2022-09-13 | 安阳钢铁股份有限公司 | Cold rolling process for one time of cold continuous rolling of six-roller five-stand common oriented silicon steel |
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| DE112007000641T5 (en) | 2009-07-02 |
| WO2007108356A1 (en) | 2007-09-27 |
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| CN101405094A (en) | 2009-04-08 |
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Effective date of registration: 20151020 Address after: Japan Tokyo port, 34 No. 6 Chicago Patentee after: Co., Ltd of general sharp special metallurgical technology Japan Address before: Tokyo, Japan Patentee before: Mitsubishi Hitachi Steel, Ltd. |