CN100409954C - Control method for tandem rolling equipment and tandem rolling equipment - Google Patents
Control method for tandem rolling equipment and tandem rolling equipment Download PDFInfo
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- CN100409954C CN100409954C CNB031274854A CN03127485A CN100409954C CN 100409954 C CN100409954 C CN 100409954C CN B031274854 A CNB031274854 A CN B031274854A CN 03127485 A CN03127485 A CN 03127485A CN 100409954 C CN100409954 C CN 100409954C
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Abstract
To provide a control method for tandem rolling equipment to efficiently modify a local shape of a plate end of a rolling material, and also to provide tandem rolling equipment. In the tandem rolling equipment, the shape of the plate is measured on the outlet side of a rolling mill at the final stage of a plurality of the rolling mills, and the plate is wholly separated into a central part and the plate ends in the width direction thereof. The plate thickness distribution of the plate end of the rolling material is controlled to make detection value of the shape of the plate end reach a target value on at least either an inlet side or the outlet side of the rolling mill at the final stage, and thus the plate ends are efficiently modified. (C)2004,JPO.
Description
Technical field
The present invention relates to the control method and the cascade rolling equipment of cascade rolling equipment.
Prior art
In the control method of cold rolling plate shape (spy opens flat 9-271818 communique, the spy opens flat 6-304623 communique), it is the whole purpose that is shaped as with the control panel width, the local shape that the plate end occurs is ignored the SHAPE DETECTION signal of plate end mostly not as object during control.Think that when this reason was rolling thicker material, local plate end shape was difficult to variation, even some variation can not cause fault during cutting plate yet, and, do not revise the effective ways of local shape.
In recent years, cold rolling goods have the production increase of top grade variety, plate thickness attenuation, the tendency of hardness hardening. and thereupon, local plate end shape variation becomes noticeable.
Relevant reason is because there is not an effective ways of the local shape of revision board end.
Summary of the invention
The object of the present invention is to provide a kind of control method and cascade rolling equipment of cascade rolling equipment of local shape of plate end that can more effective correction rolling stock.
According to an aspect of the present invention, a kind of control method of cascade rolling equipment is provided, this cascade rolling equipment has many roll mills, it is characterized in that comprising: measure rolled stock flitch shape at final level roll mill outlet side, the whole plate shape of the plate width measured is separated into plate end shape and central part shape, the operation roll of the edge decline correction mechanism of the final level of control roll mill moves, make plate end shape measured value after the separation become the step of desired value, shape control apparatus with the final level of control roll mill, make central part detected value after the separation become the step of desired value, distinguish the step of control edge decline correction mechanism and the step of control shape control apparatus respectively and implemented.
According to another aspect of the present invention, a kind of cascade rolling equipment is provided, this cascade rolling equipment has many roll mills, it is characterized in that, comprise: determinator, be used for measuring rolled stock flitch shape at final level roll mill outlet side, first control device, the whole plate shape that is used for the plate width that will measure is separated into plate end shape and central part shape, the operation roll of the edge decline correction mechanism of the final level of control roll mill moves, and makes the plate end shape measured value after the separation become desired value; And second control device, be used to control the shape control apparatus of final level roll mill, make the central part detected value after the separation become desired value, constitute the control of distinguishing first control device respectively and the control of second control device and implemented.
Based on the plate end shape detected value in the plate shape of the whole plate width of final level roll mill outlet side mensuration in many roll mills, the plate thickness of the plate end of controlled rolling material distributes.
Description of drawings
Fig. 1 is the control structure figure of the cascade rolling equipment of expression one embodiment of the invention.
Fig. 2 is as the end local elongation of control object and the key diagram of common edge wave.
Fig. 3 is the key diagram as the compact and common middle part ripple in the part, end of control object.
Fig. 4 is the result of expression when having revised the end local elongation shape correction figure.
Fig. 5 is the key diagram of the generation reason of end local shape.
Fig. 6 is the edge decline control structure figure of very thin operation roll.
Fig. 7 is the control structure figure of the cascade rolling equipment of expression another embodiment of the present invention.
Fig. 8 is the figure of control logic of the example of presentation graphs 7.
Fig. 9 is the control structure figure of the cascade rolling equipment of expression another embodiment of the present invention.
Figure 10 is the control structure figure that has been suitable for cascade rolling equipment of the present invention 5 grades.
Figure 11 is the control structure figure of the cascade rolling equipment of expression another embodiment of the present invention.
The specific embodiment
The production that cold rolling goods have top grade variety increases, the plate thickness attenuation, the tendency of hardness hardening. thereupon, local plate end shape variation causes gazes at. and Fig. 2 is that longitudinal tensile strain becomes big in the narrow range of plate end a), produce small ripple, therefore, with Fig. 2 b) shown in edge wave different. promptly, Fig. 2 a), b) compare with central part, it is big all to be that edge wave all becomes, but b) become big near the elongation from central division gradually, and a) its scope sharply becomes big in 10% the zone elongation that is defined as at most less than the plate width. on the other hand, opposite with Fig. 2, have and have only the less and compact Fig. 3 of panel edges ripple shape a), this and be commonly referred to as the middle part ripple Fig. 3 b) shape different.
When revising as a) shape of Fig. 2, because edge wave, make the work roll bending force become big control. still, not only the narrow range to the plate end is effective for the effect of the crooked inhibition elongation of work roll, also to effective near the central part, so revised shape as shown in Figure 4, the elongation of plate end diminishes, but slightly lean on the elongation of the part at center also to diminish than plate end, the result becomes the complexity that is called compound shape and forms. it is very difficult revising this compound shape, and there is problem the product property aspect.
Therefore, ignore the signal of plate end when carrying out shape control usually, only use the signal of central part.At this, the shape after the control becomes Fig. 2 a) and Fig. 3 shape a), but because if rolling back utilize prune clip the plate end will general planar, so do not take special countermeasure. certainly, this method has the problem that the yield rate brought reduces of pruning.
In addition, the variation of local shape can cause whole plate faults such as plate is disrumpent feelings, so be difficult to improve mill speed, productivity reduces.
The applicant finds that the so-called edge decline that the local shape of so far described plate end changes and the plate thickness in same plate end sharply reduces has substantial connection. promptly, known that the input side and the outlet side that prolong machine take place, then local shape changes. and following employing Fig. 5 describes.
As Fig. 5 a) shown in, (comprising the edge descends) is identical at the each point of plate width with the ratio that the plate thickness of outlet side distributes if the plate thickness of input side distributes, in other words, if the reduction ratio of width each point is identical, then become flat shape. different therewith, as Fig. 5 b) shown in, descend at the edge of input side hour, the edge of outlet side descends when being rolled under the condition that becomes big, it is big that the reduction ratio of plate end becomes, it is big that longitudinal tensile strain becomes, produce local elongation. opposite, as Fig. 5 c) shown in, descend at the edge of input side when big, when being rolled under the condition that the edge decline of outlet side diminishes, the elongation of plate end diminishes, become the shape of local compact condition. when plate thickness is thicker, in the distortion that the plate end also produces the plate width, have the effect of a part that absorbs the longitudinal tensile strain variation, so can not produce too big local elongation and compactness. still, its effect changes so be easy to generate local shape not as good as than thin material.
From above-mentioned, the edge of the input side by controlling final path descends, and can revise the plate end local shape of final path outlet side. in addition, also can descend revision board end local shape by edge at final path control outlet side.
Particularly, when local elongation, the edge decline of final path outlet side is diminished, or the edge that makes final path input side descends change greatly. in addition, when local compactness, make the edge of final path outlet side descend change greatly, or the edge decline of final path input side is diminished. like this, when revising same shape, at input side and outlet side, rightabout operation is carried out in the control that descends for the edge.
When the edge of controlling final path input side descends, revising the means that the edge descends in the prime control of final level gets final product. at this edge decline modification method following the whole bag of tricks is arranged. and effective method is, shown in for example special fair 4-200814 communique, an end shown in Figure 6 is become point symmetry as the operation roll configuration of very thin shape, the method that move in alignment edges decline zone. in addition, this with very thin starting point 18 and plate end distance from being made as δ w, by utilizing operation roll mobile device to change this value, edge decline is controlled to be desired value.
As another edge decline modification method, according to CAMP-ISIJVol.5 (1992), 495～498 pages " ability that the reduction edge of 6 grades of cold rolling roll mills descends ", as edge decline correction method, so-called shape modification method, for example the operation roll is increased the method for bending force, mobile central roll, make the method for operation roll bending also effective. in addition, according to plasticity and No. 426 (1996-7) 717～722 pages " the cold edge dropping characteristic of prolonging plate that the unipath is rolling " of processing 37 volumes, can also utilize the method for cross-operation roll up and down etc. in addition, come the controlled rolling load by the roll gap that changes screw, changing the edge descends. in addition, because said method is the method for control panel shape,, some is divided into edge decline modification method so be suitable for when of the present invention, other is divided into shape control method, a method is not used to control two aspects.
Therefore, local shape in final level outlet side check-out console end, above-mentioned each device of last path control in final level, the edge of the final level of control input side descends and gets final product. perhaps, local shape in final level outlet side check-out console end, the edge of the final level of control descends, the edge of the final level of control outlet side descends and gets final product. perhaps, local shape in final level outlet side check-out console end, share the edge that carries out final level input side descend control and, the edge of final level outlet side descends to controlling and gets final product. and the detection of local shape is the shape of assay plate width integral body, separate local shape. because detected shape in the plate end, be can not judge among Fig. 2 or Fig. 3 a) or b).
Below, as other method, measuring the edge at final level outlet side descends and the plate shape, the whole shape of detected plate width is separated into plate end shape and central part shape in addition, plate end shape detected value and final level outlet side edge decline detected value after separating are determined final level input side edge decline desired value, in order to become this input side edge decline desired value, at least a above edge decline correction mechanism of the prime of the final level of control gets final product.
Current, as a method, when the plate end shape detected value after control separates becomes desired value, magnitude relationship according to detected edge slippage and object edge slippage, selection is that the edge of the final level of control input side descends, or the edge of control outlet side descends. identical at edge decline detected value, when the palette end shape is not desired value with desired value, edge decline is controlled to the direction bigger than desired value, with the plate end shape as desired value. this is to descend too for a short time for fear of the edge, and the plate thickness of plate end becomes big edge and promotes state.
Measuring the edge at final level outlet side descends and the plate shape, for detected edge slippage becomes the object edge slippage, during at least a above edge decline correction mechanism of the prime of the final level of control, the shape of detected plate width entire domain is separated into plate end shape and central part shape in addition, the plate end shape detected value that the controlled quentity controlled variable of this edge decline correction mechanism is modified to after the separation becomes desired value. and for example, the value that the object edge slippage itself is modified to the plate end shape and becomes desired value gets final product.
At final level outlet side at the local shape of control panel end not only, also control simultaneously and adopt following method when the edge descends., measure the shape of edge decline and plate at final level outlet side, at least a above edge decline correction mechanism of the final level of control, so that detected edge slippage becomes the object edge slippage, the whole shape of detected plate width is separated into plate end shape and central part shape in addition, plate end shape detected value and final level outlet side edge decline detected value after separating are determined final level input side edge decline desired value, in order to become this input side edge decline desired value, at least a above edge decline correction mechanism of the prime of the final level of control gets final product.
So far in the method, by and use for the central part SHAPE DETECTION value after separating becomes the known method that desired value is controlled the shape controlling organization of final level, the whole shape of plate width all can be controlled to be desired value.
(embodiment)
Fig. 1 illustrates one embodiment of the invention. and rolling stock 1 is rolling by 2 roll mills, being rolled onto spool 29. these roll mills through flexible roll 28 is respectively 6 grades of roll mills that are made of a pair of operation roll 2,3,8,9, central roll 4,5,10,11, reinforcement roll 6,7,12,13, has operation roll bending apparatus, central roll bending apparatus, central roll mobile device as the shape controlling organization.
At final level (the 2nd grade) outlet side as final level roll mill, by the whole shape of SHAPE DETECTION device 14 assay plate width. the shape of mensuration is delivered to computer 15, be separated into plate end shape and central part shape at this. considered several methods of separating, one example below is shown. at first, the plate end for example is set at 10%, with the shape signal of this part as the plate end shape, also can be other value with remainder as the ratio of central part shape .10%, can set arbitrarily. in addition, also can be not according to the plate width, and be set at 50mm or 100mm. certain, also can adopt value in addition. in the difference of the nearest shape output of plate end shape and adjacency hour, owing to think) as Fig. 2 b, Fig. 3 b) the whole shape of plate width shown in changes, so do not regard local shape this moment as, do not carry out the control of the following stated. therefore, obtain nearest shape output poor of plate end shape and adjacency, only when this is worth greater than setting, should differs from as the plate end shape and export.
In the shape of separating, the shape of central part outputs to the 2nd grade of shape control computer 16, utilize known method to control the shape controlling organization respectively, i.e. the 2nd grade of operation roll bending apparatus 25, central roll bending apparatus 26,27, operational ton Fw2, the Fi2 of central roll mobile device (not shown), δ 2.
On the other hand, the plate end shape outputs to computer 30. at this, calculates the edge slippage correction for required the 2nd grade of input side edge decline correction amount E1 in revision board end or the 2nd grade of outlet side edge slippage Δ E2 or both sides. and these computational methods are as described below.Export as the plate end shape that the outer elongation rate variance Δ ε of local elongation determination range calculates after separating. promptly, become following formula.
Δ ε=hc/Hc-he/He (formula 1)
At this, he is the plate end panel thickness of the 2nd grade of outlet side, hc is the local elongation determination range of the same outlet side plate thickness of outer (near central part), He is the plate end panel thickness of the 2nd grade of input side, Hc is the outer plate thickness of local elongation determination range of same input side. in addition, Δ ε is for just representing the edge elongation, and Δ ε is a negative indication edge compactness. the edge slippage E1 of the 2nd grade of input side, the edge slippage E2 of the 2nd grade of outlet side are as follows respectively.
E1=Hc-He (formula 2)
E2=hc-he (formula 3)
In the embodiments of the invention, purpose is to make Δ ε 0. need hc, the Hc of change formula 1, certain among he, the He for this reason, but the plate thickness hc, the Hc that utilize automatic plate thickness control device (AGC) to control near the part of central part in this become prescribed level, can not at will change. therefore, be 0. by utilizing edge decline control change he or He or both sides to make Δ ε
Current, when only changing he and revising Δ ε, that is, when the edge slippage E2 that only changes the 2nd grade of outlet side revised, the change amount Δ he of necessary he was
Δ he=Δ ε * He (formula 4)
On the other hand, when only changing He and revising Δ ε, that is, when the edge slippage E1 that only changes the 2nd grade of input side revised, the change amount Δ He of necessary He was
Δ He=-Δ ε * He2/he (formula 5)
Generally, because central plate thickness and plate end panel thickness is poor, it is extremely little to be that the edge slippage is compared with the plate thickness absolute value, so the plate thickness of changing formula 4, formula 5 with central part plate thickness H, the h of the 2nd grade of input side, outlet side does not have mistake yet. and therefore, formula 4, formula 5 are as follows.
The edge decline change amount of the edge decline change amount Δ E1 of the 2nd grade of input side, the 2nd grade of outlet side is as follows respectively.
More than be only to change the situation that a side's of the 2nd grade of input side or outlet side edge descends, but also can be that Δ ε is divided at the Δ ε 1 of input side correction with at the Δ ε 2 of outlet side correction that change both sides' edge descends.
In addition, also can be the Δ E1 that only controls the 2nd grade of input side usually, only in the time only can not revising, also control Δ E2 with it, considered variety of way. certainly, for example do not have operation roll mobile device, and rolling loading is can not use because of plate thickness control also the time, promptly at the 2nd grade, when not having edge decline modification method, the edge that only carries out the 2nd grade of input side descends and controls.
Below, edge decline change amount Δ E1, Δ E2 deliver to the 31, the 2nd grade of edge decline control computer 32 of the 1st grade of edge decline control computer respectively, at this, utilize following formula to calculate required operation roll amount of movement Δ δ w1, Δ δ w2, loading change amount Δ P1, the Δ P2 of each edge decline change amount of realization, each device is controlled according to it.
Δ δ w1=α 1 * Δ E1 (formula 10)
Δ δ w2=α 2 * Δ E2 (formula 11)
Δ P1=β 1 * Δ E1 (formula 12)
Δ P2=β 2 * Δ E1 (formula 13)
At this, α 1, α 2, β 1, β 2 are constants of being determined by rolling condition, can wait in advance by experiment and obtain.
As the variation of said method, also can be to use device beyond above-mentioned as edge decline correction mechanism, for example the 1st grade of operation roll bending apparatus, central roll bending apparatus, central roll move etc.
Fig. 7 illustrates a current embodiment. and the structure of roll mill is identical with Fig. 1, but outlet side check-out console shape in final level, also utilize edge decline detector 19 to detect the edge slippage simultaneously, export to computer 30. in computer 30, acceptance utilizes the 1st grade of operation roll location δ w1 of logic control shown in Figure 8 or the 2nd grade of operation roll location δ w2. from the signal of the relevant plate end shape of computer 15
Key diagram 8. at first judges that the plate end shape is elongation (Δ ε＞0) still compact (Δ ε＜0). when elongation, can be as can be known from the relation of Fig. 5, and final level input side edge is descended become big or final level outlet side edge decline is diminished to get final product.
Then, at the poor Δ E of edge decline measured value E2 and desired value Ea2 during for just (edge suppression ratio desired value is big), because need reduce final level outlet side edge descends, so reduce the control of the direction of final level outlet side edge decline, promptly increase the control of the 2nd grade of operation roll location Δ δ w2. opposite, when difference Δ E is negative (edge suppression ratio desired value is little), owing to need to increase the control that final level outlet side edge descends, so increase the control of the direction of final level input side edge decline, promptly reduce the control of the 1st grade of operation roll location Δ δ w1.
Carry out and above-mentioned opposite operation when equally, the plate end shape is for compactness.Promptly, reducing final level input side edge descends, or the edge decline of the final level of increase outlet side gets final product. promptly, difference Δ E is timing (edge suppression ratio desired value is big), owing to need reduce the control of the direction of final level outlet side edge decline, so reduce the control of final level input side edge descent direction, promptly increase the control of the 1st grade of operation roll location δ w1. opposite, difference Δ E (edge suppression ratio desired value is little) when negative, owing to need increase the control of the direction of final level outlet side edge decline, so increase the control of the direction of final level outlet side edge decline, promptly reduce the control of the 2nd grade of operation roll location δ w2.
In addition, decline is controlled to be desired value at the edge, Δ E is 0 o'clock, select increasing the control of the direction that final level outlet side edge descends. this reason is that the plate thickness of the too small and plate end because general edge descends is than the operation inconvenience of the big state of central part for back technology. sometimes, the edge descends does not become desired value, but owing to revise little the getting final product of edge decline change amount of shape, so there is not big problem. in addition, if the product property aspect is than the edge more preferably shape that descends usually mostly. when being the goods of the preferentially desired value that descends of edge, Δ E is 0 o'clock, and the operation of not carrying out the revision board end shape gets final product.
Fig. 9 illustrates another embodiment. and the structure of roll mill is identical with Fig. 1. in final level outlet side check-out console shape, also utilize edge decline detector 19 to detect edge slippage E2 simultaneously, export to computer 33. on the other hand, to give computer 15 by the shape that SHAPE DETECTION device 14 is measured, be separated into plate end shape and central part shape at this.
In the shape of separating, the shape of central part outputs to the 2nd grade shape control computer 16, utilize known method, control the shape controlling organization respectively, i.e. the 2nd grade of operation roll bending apparatus 25, central roll bending apparatus 26,27, operational ton Fw2, the Fi2 of central roll mobile device (not shown), δ 2.
Computer 33 calculates the edge that should the revise difference Δ E2 that descends from edge slippage E2 and final goal slippage Ea2, exports to the 2nd grade of edge decline control computer 32, and making Δ E2 is 0 control.
Then, signal and final goal edge slippage Ea2 that computer 34 is accepted from the relevant plate end shape Δ ε of computer 15 calculate the object edge slippage Ea1. of plate end shape as the 2nd grade of input side of desired value
Computer 35 calculate from the signal E1 of the edge decline detector 20 that is arranged on the 2nd grade of input side and with the poor Δ E1 of this Ea1, export to the 1st grade of edge decline control computer 31, making Δ E1 is 0 control. utilize said method, the edge can be descended and any of plate end shape is controlled to be desired value.
At this, when not having the edge decline detector 20 of the 2nd grade of input side, also can predict the controlled quentity controlled variable that realizes Ea1, also consider relevant distortion.
So far in the explanation, 2 grades cascade grinder has been described, the present invention does not limit the cascade number certainly.So far among the embodiment of the Fig. 1 shown in, Fig. 7, Fig. 9, also can be between 2 roll mills, or dispose several roll mills more in addition before the 1st roll mill. therefore, the embodiment of the general 5 grades cascade grinder that is applicable to that roll mill 51～55 constitutes has been shown among Figure 10.
The structure of each roll mill is identical with Fig. 1 with control method, and the 1st and the 2nd grade operation roll is a very thin shape shown in Figure 6, has the mobile device of variable each operation roll location δ w1, δ w2.
Deliver to computer 15 by the shape that SHAPE DETECTION device 14 is measured at the outlet side of final level, be separated into plate end shape and central part shape at this. in the shape of separating, the shape of central part outputs to the finally shape control computer 16 of (the 5th) level, utilize known method to control the 5th grade shape controlling organization respectively, i.e. operational ton Fw5, the Fi5 of operation roll bending apparatus, central roll bending apparatus, central roll mobile device, δ 5.
On the other hand, the plate end shape outputs to computer 30. at this, and the 5th grade input side edge decline correction amount E4 required for the revision board end shape calculates according to described formula 8.
The 5th grade of input side edge modifications amount Δ E4 outputs to the 1st grade edge decline control computer 31. at this, the 1st grade edge descend control by very thin operation roll shown in Figure 6 the δ w1 that moves and, depressing with the change of the rolling loading P1 of crane 23 of hydraulic type carry out. in addition, computer 31 calculates each amount that is used to reach Δ E4. in addition, only descend and control and can not revise the time, Δ E4 is outputed to the 2nd grade edge decline control computer 31. with the 1st grade edge
As mentioned above, use the 1st grade and the 2nd grade among Figure 10, can certainly use other level. like this, except the described embodiment so far, can also carry out various combinations among the present invention.
In addition, for the structure of roll mill, be not limited to 6 grades of roll mills with central roll travel mechanism that so far described embodiment adopts, so long as have the roll mill of shape control device, edge decline control device, Any shape can.
Figure 11 illustrates the roll mill as the 1st grade, the example of the roll mill that employing can intersect the operation roll up and down in horizontal plane. shape control is by by operation roll bending apparatus 21, operation roll angle of the crossing change device (not shown) up and down, and depress crane 24, and by changing bending force Fw1, angle of the crossing θ 1 respectively and rolling loading P carries out. part in addition is identical with the described method of Fig. 1.
That is, the plate end shape outputs to computer 30. at this, and the 2nd grade input side edge decline correction amount E1 required for the revision board end shape calculates according to described formula 8.
The 2nd grade of input side edge decline correction amount E1 outputs to the 1st grade edge decline control computer 31. at this, the 1st grade edge descend control be according to the change of the operation roll angle of the crossing and, depressing with the change of the rolling loading P1 of crane 23 of hydraulic type carry out.Like this, calculate these each amounts at computer 31.
In addition, as shape control method a plurality of known examples are arranged. for example, delivered operation roll and reinforcement roll as a pair of mode of intersecting up and down, middle roll or operation roll are given special convex surface and the mode that moves, changed the mode etc. of the refrigerating mode of roll at direction of principal axis, arbitrary mode can be suitable for the present invention.
In addition,,, also considered near the mode of the operation roll heating or the coldplate end, also can use this mode except the described mode so far for edge decline control method.
According to embodiments of the invention, there is not compound shape shown in Figure 4, the whole shape of plate width is good, can improve the product surcharge. in addition, the shape defect of the plate end that cuts is partly few, thereby improves yield rate. in addition, owing to there is not the disrumpent feelings and whole plate fault of plate, so can improve mill speed, can improve productivity. can obtain above-mentioned or the like a plurality of effects.
The invention effect
According to the present invention, can provide control method and the cascade rolling equipment of the cascade rolling equipment of plate end that can more effective correction rolling stock.
Claims (3)
1. the control method of a cascade rolling equipment, this cascade rolling equipment has many roll mills, it is characterized in that comprising:
Measure rolled stock flitch shape at final level roll mill outlet side,
The whole plate shape of the plate width measured is separated into plate end shape and central part shape, the operation roll of the edge decline correction mechanism of the final level of control roll mill moves, make plate end shape measured value after the separation become the step of desired value, shape control apparatus with the final level of control roll mill, make central part detected value after the separation become the step of desired value
Distinguishing the step of control edge decline correction mechanism and the step of control shape control apparatus is respectively implemented.
2. the control method of cascade rolling equipment as claimed in claim 1 is characterized in that:
The whole plate shape of the plate width of measuring comprises the percentage elongation of rolling stock.
3. cascade rolling equipment, this cascade rolling equipment has many roll mills, it is characterized in that, comprising:
Determinator is used for measuring rolled stock flitch shape at final level roll mill outlet side,
First control device, the whole plate shape that is used for the plate width that will measure is separated into plate end shape and central part shape, the operation roll of the edge decline correction mechanism of the final level of control roll mill moves, and makes the plate end shape measured value after the separation become desired value; And second control device, be used to control the shape control apparatus of final level roll mill, make the central part detected value after the separation become desired value,
Constituting the control of distinguishing first control device respectively and the control of second control device is implemented.
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| Application Number | Priority Date | Filing Date | Title |
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| JP147070/2002 | 2002-05-22 | ||
| JP2002147070A JP3649208B2 (en) | 2002-05-22 | 2002-05-22 | Tandem rolling equipment control method and tandem rolling equipment |
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| CN1483525A CN1483525A (en) | 2004-03-24 |
| CN100409954C true CN100409954C (en) | 2008-08-13 |
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| JP5647917B2 (en) * | 2011-03-04 | 2015-01-07 | 東芝三菱電機産業システム株式会社 | Control apparatus and control method |
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| JP6074096B1 (en) * | 2016-06-02 | 2017-02-01 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 | Sheet profile control method for hot finishing tandem rolling mill and hot finishing tandem rolling mill |
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| CN1098032A (en) * | 1993-03-29 | 1995-02-01 | Sms舒路曼-斯玛公司 | The method and apparatus of rolled strip |
| CN1164446A (en) * | 1995-12-26 | 1997-11-12 | 株式会社东芝 | Strip crown measuring method and control method for continuous rolling machines |
| CN1184719A (en) * | 1996-07-18 | 1998-06-17 | 川崎制铁株式会社 | Method and machine for rolling plate with function of eleminating thin edges of plate |
| CN1247108A (en) * | 1998-07-21 | 2000-03-15 | 株式会社东芝 | Equipment for controlling roll mill according to central thickness portion of band materials |
| US6200248B1 (en) * | 1997-04-11 | 2001-03-13 | Valmet Corporation | Roll for a paper or board machine |
-
2002
- 2002-05-22 JP JP2002147070A patent/JP3649208B2/en not_active Expired - Lifetime
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2003
- 2003-05-21 CN CNB031274854A patent/CN100409954C/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109707A (en) * | 1984-12-03 | 1986-07-23 | 株式会社日立制作所 | Method for controlling shape of rolled plate-shaped material |
| CN1038600A (en) * | 1989-05-03 | 1990-01-10 | 北京市冶金设备自动化研究所 | Board rolling thickness basic point pre-control-method for supervising |
| CN1098032A (en) * | 1993-03-29 | 1995-02-01 | Sms舒路曼-斯玛公司 | The method and apparatus of rolled strip |
| CN1164446A (en) * | 1995-12-26 | 1997-11-12 | 株式会社东芝 | Strip crown measuring method and control method for continuous rolling machines |
| CN1184719A (en) * | 1996-07-18 | 1998-06-17 | 川崎制铁株式会社 | Method and machine for rolling plate with function of eleminating thin edges of plate |
| US6200248B1 (en) * | 1997-04-11 | 2001-03-13 | Valmet Corporation | Roll for a paper or board machine |
| CN1247108A (en) * | 1998-07-21 | 2000-03-15 | 株式会社东芝 | Equipment for controlling roll mill according to central thickness portion of band materials |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530931A (en) * | 2020-05-09 | 2020-08-14 | 王洪兴 | Steel band system of processing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003334603A (en) | 2003-11-25 |
| JP3649208B2 (en) | 2005-05-18 |
| CN1483525A (en) | 2004-03-24 |
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