CN103846287A - Rolling control device and rolling control method - Google Patents
Rolling control device and rolling control method Download PDFInfo
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- CN103846287A CN103846287A CN201310644191.0A CN201310644191A CN103846287A CN 103846287 A CN103846287 A CN 103846287A CN 201310644191 A CN201310644191 A CN 201310644191A CN 103846287 A CN103846287 A CN 103846287A
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Abstract
The invention provides a rolling control device and a rolling control method. On the condition that mass flow plate-thickness control is carried out in a tandem rolling machine, plate speed is calculated at the output side according to forward slip so that a plate-speed meter is not acquired as much as possible, and the plate-thickness precision is prevented from reducing due to an error of forward slip. Forward slip is obtained by the condition related to rolling of a rolled material and information related to forward slip. The conveying speed of the rolled material at the output side of a first roller pair is calculated. The plate thickness of the rolled material at the output side of the first roller pair is calculated by the plate thickness of the rolled material of the rolled material at the input side of a first roller and the conveying speed of the rolled material detected by the input side of the first roller. Based on difference between the calculating result and the detecting result, the error of forward slip is calculated. Additionally, based on the above calculating result, the calculating result of the plate thickness of the rolled material at the output side of a second roller pair is corrected.
Description
Technical field
The present invention relates to rolling control device and control method for rolling, especially relate to the thickness of slab control in tandem rolling.
Background technology
There is following tandem roll mill: by being set up in parallel many roll mill stands, repeatedly rolling is rolled material and obtains desired thickness of slab.In such tandem roll mill, sometimes carry out the control of mass flow thickness of slab, in this mass flow thickness of slab control, detect the speed of the plate that is rolled and the thickness of slab presumed value (hereinafter referred to as " mass flow is inferred thickness of slab ") obtained under roll mill is carried out thickness of slab control.
Carrying out continuously by multiple roll mill stands in the continuous rolling machine of rolling, the in the situation that of the control of application quality flow thickness of slab, expensive thickness of slab meter and plate speed meter need to be arranged on each stand, spend initial investment and the cost for safeguarding for introducing the control of above-mentioned mass flow thickness of slab.Therefore, omit as far as possible plate speed meter or thickness of slab meter, and adopt by model or infer the method for inferring mass flow thickness of slab of calculating.
Following method is proposed: in order to revise error that mass flow infers thickness of slab to guarantee the thickness of slab precision of final stand outlet side, use rolling load and the depressing position measured by being arranged on 1 loadometer on stand, obtain 1 indicating meter thickness of slab under stand by indicating meter (gauge meter) mode, detect the plate speed of roll mill input side by being arranged on the idler roller of roll mill input side, and measure the thickness of slab of roll mill input side by being arranged on the thickness of slab meter of roll mill input side, from the plate speed of roll mill input side, roll mill input side thickness of slab, the indicating meter thickness of slab of 1 stand, (for example calculate the plate speed of roll mill outlet side, with reference to patent documentation 1).
Patent documentation 1: TOHKEMY 2009-113100 communique
The calculating of the disclosed indicating meter thickness of slab of patent documentation 1 needs expensive loadometer (load cell), and in recent years, in order to suppress initial investment, improve maintainability, to cut down maintenance cost, the requirement of also omitting loadometer increases.
One of advantage of service property (quality) flow thickness of slab is to realize by the plate speed meter than thickness of slab meter cheapness.But plate speed meter can not or be safeguarded aspect ignorance aspect cost, the requirement that reduces quantity still exists.
In the situation that cutting down plate speed meter, for part that can not actual check-out console speed, can by from the roller speed of roll mill and the plate speed of sliding rate (forward slip) calculating roll mill outlet side supplement.But, in the method, in the time that roll mill accelerates, slow down time etc. before sliding rate change situation under, sometimes produce mass flow and infer the error of thickness of slab and can not guarantee thickness of slab precision.
Summary of the invention
The present invention researches and develops for tackling above-mentioned problem, its objective is: the in the situation that of carrying out the control of mass flow thickness of slab in tandem roll mill, omit as much as possible plate speed meter by the calculating of the output side plate speed of carrying out according to front sliding rate, and can prevent from reducing because the error of front sliding rate causes thickness of slab precision.
Rolling control device of the present invention, the tandem roll mill that is rolled material by multiple rollers to carrying out rolling is controlled, it is characterized in that, comprise: front sliding rate obtaining section, described front sliding rate obtaining section from by the condition relevant to the described rolling that is rolled material and sliding rate be associated and the information that obtains, obtain the first roller corresponding to the condition relevant to the rolling that is rolled material in rolling to the front sliding rate of locating; The first roller plate speed calculating part, described the first roller plate speed calculating part based on the right roller speed of described the first roller and described in the front sliding rate obtained, calculate the transporting velocity that is rolled material of the right outlet side of the first roller; The first roller thickness of slab calculating part, described in the input side of described the first roller thickness of slab calculating part based on described the first roller, be rolled the thickness of slab of material, detect at the input side of described the first roller described in be rolled the transporting velocity of material and the transporting velocity that is rolled material of the outlet side that described the first roller of calculating is right, calculate the thickness of slab that is rolled material of the right outlet side of described the first roller; Front sliding rate error calculating part, difference between the thickness of slab that is rolled material of the outlet side of described first roller of described front sliding rate error calculating part based on being rolled the thickness of slab of material described in detecting at the outlet side of described the first roller and calculate, calculates the error of obtained described front sliding rate; Second roller thickness of slab calculating part, described second roller thickness of slab calculating part based on be rolled described in detecting at the right outlet side of described the first roller the transporting velocity that is rolled material of the right outlet side of the thickness of slab of material, described the first roller of calculating and detect at the right outlet side of second roller that is disposed at the right downstream of described the first roller described in be rolled the transporting velocity of material, calculate the thickness of slab that is rolled material of the right outlet side of described second roller; And second roller thickness of slab correction portion, the error of the described front sliding rate of described second roller thickness of slab correction portion based on calculating, revises the thickness of slab that is rolled material of the right outlet side of the described second roller calculating.
In addition, control method for rolling of the present invention, the tandem roll mill that is rolled material by multiple rollers to carrying out rolling is controlled, it is characterized in that, from by the condition relevant to the described rolling that is rolled material and sliding rate be associated and the information that obtains, obtain the first roller corresponding to the condition relevant to the rolling that is rolled material in rolling to the front sliding rate of locating; Based on the right roller speed of described the first roller and described in the front sliding rate obtained, calculate the transporting velocity that is rolled material of the right outlet side of the first roller; Described in input side based on described the first roller, be rolled the thickness of slab of material, detect at the input side of described the first roller described in be rolled the transporting velocity of material and the transporting velocity that is rolled material of the outlet side that described the first roller of calculating is right, calculate the thickness of slab that is rolled material of the right outlet side of described the first roller; Difference between the thickness of slab that is rolled material of the outlet side of described the first roller based on being rolled the thickness of slab of material described in detecting at the outlet side of described the first roller and calculate, calculates the error of obtained described front sliding rate; Based on be rolled described in detecting at the right outlet side of described the first roller the transporting velocity that is rolled material of the right outlet side of the thickness of slab of material, described the first roller of calculating and detect at the right outlet side of second roller that is disposed at the right downstream of described the first roller described in be rolled the transporting velocity of material, calculate the thickness of slab that is rolled material of the right outlet side of described second roller; The error of the described front sliding rate based on calculating, revises the thickness of slab that is rolled material of the right outlet side of the described second roller calculating.
In addition, roll control program of the present invention, the tandem roll mill that is rolled material by multiple rollers to carrying out rolling is controlled, it is characterized in that, carry out following steps by information processor: from by the condition relevant to the described rolling that is rolled material and the sliding rate information obtaining that is associated, obtain the first roller corresponding to the condition relevant to the rolling that is rolled material in rolling step to the front sliding rate of locating; Based on the right roller speed of described the first roller and described in the front sliding rate obtained, calculate the step of the transporting velocity that is rolled material of the right outlet side of the first roller; Described in input side based on described the first roller, be rolled the thickness of slab of material, detect at the input side of described the first roller described in be rolled the transporting velocity of material and the transporting velocity that is rolled material of the outlet side that described the first roller of calculating is right, calculate the step of the thickness of slab that is rolled material of the right outlet side of described the first roller; Difference between the thickness of slab that is rolled material of the outlet side of described the first roller based on being rolled the thickness of slab of material described in detecting at the outlet side of described the first roller and calculate, calculates the step of the error of obtained described front sliding rate; Based on be rolled described in detecting at the right outlet side of described the first roller the transporting velocity that is rolled material of the right outlet side of the thickness of slab of material, described the first roller of calculating and detect at the right outlet side of second roller that is disposed at the right downstream of described the first roller described in be rolled the transporting velocity of material, calculate the step of the thickness of slab that is rolled material of the right outlet side of described second roller; The error of the described front sliding rate based on calculating, the step that the thickness of slab that is rolled material of the right outlet side of the described second roller calculating is revised.
The effect of invention
According to the present invention, the in the situation that of carrying out the control of mass flow thickness of slab in tandem roll mill, omit as much as possible plate speed meter by the calculating of the output side plate speed of carrying out according to front sliding rate, and can prevent from reducing because the error of front sliding rate causes thickness of slab precision.
Brief description of the drawings
Fig. 1 represents the roll mill of embodiments of the present invention and the integrally-built figure of rolling control device.
Fig. 2 is the figure that represents the example of the front sliding rate DB of embodiments of the present invention.
Fig. 3 is the flow chart that represents the study and work of the front sliding rate of embodiments of the present invention.
Fig. 4 is the figure that represents the hardware configuration of the rolling control device of embodiments of the present invention.
Description of reference numerals
11 first roll mill stands
12 second roll mill stands
13 the 3rd roll mill stands
21 first roll mill stand input side thickness of slab meters
22 first roll mill stand outlet side thickness of slab meters
23 second roll mill stand outlet side plate speed meters
24 the 3rd roll mill stand outlet side plate speed meters
The advancing slip rate prediction and calculation of 31 first roll mill stand portion
32 first roll mill stand outlet side plate speed calculating parts
33 first roll mill stand mass flow thickness of slab calculating parts
34 second roll mill stand mass flow thickness of slab calculating parts
The advancing slip rate error of 35 first roll mill stand calculating part
36 second roll mill stand mass flow thickness of slab error correction portions
37 the 3rd roll mill stand mass flow thickness of slab calculating parts
The advancing slip rate of 40 first roll mill stand adapts to correction portion
41 front sliding rate DB
50,51,52,53,54 transfer handling part
100 rolling control devices
101 CPU
102 ROM
103 RAM
104 HDD
105 I/F
106 LCD
107 operating portions
Detailed description of the invention
In the present embodiment, in the tandem roll mill that comprises 3 rolling stands, input side, the outlet side of the rolling stand are foremost respectively arranged with thickness of slab meter, and plate speed meter is set between the stand that thickness of slab meter is not set, thereby carry out the control of mass flow thickness of slab, above-mentioned such rolling system is described.Fig. 1 is the integrally-built figure that represents the rolling system of present embodiment.As shown in Figure 1, the rolling system of present embodiment is as the system of continuous rolling machine with 3 roll mill stands more than stand, carries out the control of implementing by the correction of mass flow thickness of slab.
As shown in Figure 1, be rolled on the direct of travel of material 1, the input side that is disposed at roll mill stand 11 foremost in the first roll mill stand 11 being set up, the second roll mill stand 12, the 3rd roll mill stand 13 these 3 stands, is provided with the roll mill input side plate speed test section 10 that detects the plate speed that is rolled material 1.Roll mill input side plate speed test section 10 is made up of idler roller, slewing rollers, guide roller etc., and the speed that is rolled material 1 of roll mill input side directly or by roller is detected indirectly.
In addition, be respectively arranged with the first roll mill stand input side thickness of slab meter 21 and the first roll mill stand outlet side thickness of slab meter 22 at input side and the outlet side of the first roll mill stand 11.Thus, measure respectively the thickness of slab that is rolled material 1 of the first roll mill stand input side and the thickness of slab that is rolled material 1 of the first roll mill stand outlet side.Do not need the loadometer of the first roll mill stand 11 and be omitted.
Be respectively arranged with the second roll mill stand outlet side plate speed meter 23 and the 3rd roll mill stand outlet side plate speed meter 24 at the outlet side of the second roll mill stand 12 and the outlet side of the 3rd roll mill stand 13.Thus, directly measure plate speed between the second roll mill stand 12 and the 3rd roll mill stand 13 and the plate speed of the 3rd roll mill stand 13 outlet sides.
The first roller speed VR and the front sliding rate predicted value f of roll mill stand outlet side plate speed calculating part 32 based on the first roll mill stand 11
1obtain the plate speed V of the first roll mill stand 11 outlet sides by following formula (1)
1d., the first roll mill stand outlet side plate speed calculating part 32 works as the first roller plate speed calculating part.
V
1d=VR（1+f
1） （1）
Transfer the first roll mill stand outlet side that handling part 52 makes to be measured by the first roll mill stand outlet side thickness of slab meter 22, i.e. the thickness of slab actual value of the second roll mill stand input side, postpone matchingly with the displacement that is rolled material of the first roll mill stand outlet side, and obtain the second roll mill stand input side thickness of slab h under the second roll mill stand
1.
The second roll mill stand mass flow thickness of slab calculating part 34 utilizes the second roll mill stand input side thickness of slab h under the second roll mill stand
1, the first roll mill stand outlet side plate speed V
1dwith the second roll mill stand outlet side plate speed V
2d, obtain the second rolling by following formula (2)
Machine frame mass flow thickness of slab h
mf2., the second roll mill stand mass flow thickness of slab calculating part 34 works as second roller thickness of slab calculating part.
At this, the V obtaining by above-mentioned formula (1)
1dcomprise the front sliding rate predicted value f with the first roll mill stand
1the corresponding error of the margin of error.Therefore the second roll mill stand mass flow thickness of slab h, obtaining by above-mentioned formula (2)
mf2also comprise the front sliding rate predicted value f with the first roll mill stand 11
1the corresponding error of the margin of error.
The plate speed V of the first roll mill stand outlet side of the first roll mill stand mass flow thickness of slab calculating part 33 based on obtaining by above-mentioned formula (1)
1d, the first roll mill stand input side plate speed V of being detected by roll mill input side speed test section 10
e, and the first roll mill stand under input side thickness of slab h
mf1, obtain the first roll mill stand mass flow by following formula (3) and infer thickness of slab h
mf1., the first roll mill stand mass flow thickness of slab calculating part 33 works as the first roller thickness of slab calculating part.
The the first roll mill stand mass flow calculating by the first roll mill stand mass flow thickness of slab calculating part 33 is inferred thickness of slab h
mf1by transferring handling part 51, and the displacement that is rolled material from the first roll mill stand 11 to first roll mill stand outlet side thickness of slab meters 22 is carried out delay disposal matchingly, is imported into the advancing slip rate error of the first roll mill stand calculating part 35.Thus, the first roll mill stand mass flow under the first roll mill stand outlet side thickness of slab meter 22 is inferred thickness of slab h
mf1be imported into the advancing slip rate error of the first roll mill stand calculating part 35.
The advancing slip rate error of the first roll mill stand calculating part 35 is to the first roll mill stand outlet side thickness of slab actual value h measuring by first roll mill the first stand outlet side thickness of slab meter 22
1infer thickness of slab h with the first roll mill stand mass flow that is delayed rear input by transferring handling part 51
mf1compare processing.The result being compared by the advancing slip rate error of the first roll mill stand calculating part 35 is, when at the first roll mill stand mass flow thickness of slab h
mf1with the first roll mill stand outlet side thickness of slab actual value h
1between while producing error, this error can be predicated mass flow thickness of slab as mentioned above and be calculated the advancing slip rate f of the first roll mill stand being used
1error.Therefore, the advancing slip rate error of the first roll mill stand calculating part 35 is obtained the error △ f of the advancing slip rate of the first roll mill stand by following formula (4)
1., the advancing slip rate error of the first stand calculating part 35 works as front sliding rate error calculating part.
In addition, because the first roll mill stand mass flow is inferred thickness of slab h
mf1error be the error of front sliding rate predicted value, so be the error of the first roll mill stand outlet side plate prediction of speed value, the mass flow of the second roll mill stand is inferred thickness of slab h
mf2also produce error.On the other hand, when by being rolled material and arriving the first roll mill stand outlet side thickness of slab meter 22 of the first roll mill stand 11 rollings, be rolled material between the second roll mill stand and the 3rd roll mill stand by the second roll mill stand rolling.
In the time that the distance of establishing the first roll mill stand 11 and the first roll mill stand outlet side thickness of slab meter 22 is L1, under the first roll mill stand, be rolled be rolled material and arrive the first roll mill stand outlet side thickness of slab meter 22 during, what under the second roll mill stand, be rolled is rolled the distance L 2 that material advances and can obtains by following formula (5).
Transfer handling part 54 and make revised mass flow thickness of slab h
mf2comppostpone matchingly with the displacement that is rolled material, and as the input side thickness of slab under the 3rd roll mill stand, be input to the 3rd roll mill stand mass flow thickness of slab calculating part 37.
On the 3rd roll mill stand 13, be provided with plate speed meter input side, outlet side both sides, therefore can obtain exactly the reduction ratio of the 3rd roll mill stand 13.And the thickness of slab of the 3rd roll mill stand 13 input sides also can be inferred the error of thickness of slab and obtain exactly by revising above-mentioned mass flow.Therefore, the 3rd roll mill stand mass flow thickness of slab calculating part 37 can calculate mass flow thickness of slab accurately.In addition, even if in the case of being more also provided with roll mill stand by the position of back segment than the 3rd roll mill stand 13, as long as and the 3rd roll mill stand 13 is similarly, input side, outlet side both sides, plate speed meter is set, also can obtain mass flow thickness of slab accurately.
And, can by the first roll mill stand 11 rollings be rolled stage that material 1 arrives the first roll mill stand outlet side thickness of slab meter 22 obtain before the error △ f1 of sliding rate predicted value, therefore, for making this error minimize, preferably, by the front sliding rate of study the first roll mill stand 11, adapt to revise.Below, the mode of learning of front sliding rate is described.
As shown in Figure 2, front sliding rate DB41 is the form of having stored the front sliding rate of, steel grade wide according to the thickness of slab of rolling stock, plate, mill speed prediction.The advancing slip rate prediction and calculation of the first roll mill stand portion 31, according to the mill speed of the first roll mill stand and other conditions, obtains front sliding rate predicted value with reference to above table, and is input to the first roll mill stand outlet side plate speed calculating part 32.
The advancing slip rate of the first roll mill stand adapts to the error △ f of the front sliding rate of correction portion 40 based on obtaining by the advancing slip rate error of the first roll mill stand calculating part 35
1, the suitable parameter list scale value of study and as-rolled condition (thickness of slab, plate are wide, steel grade, mill speed), so that this error minimum., the first advancing slip rate adaptation of roll mill stand correction portion 40 works as front sliding rate correction portion.Fig. 3 is the flow chart that represents the study and work of the front sliding rate of present embodiment.
As shown in Figure 3, first, the advancing slip rate error of the first roll mill stand calculating part 35 is obtained the error △ f(△ f of the front sliding rate of prediction
1), the advancing slip rate of the first roll mill stand adapts to correction portion 40 and obtains this value (S301).The advancing slip rate of the first roll mill stand adapts to correction portion 40 with reference to predefined bound form, carries out the whether verification (S302) within the scope of bound of front sliding rate error.Be (S302/ is no) beyond the bound scope in the situation that in the judged result of S302, as abnormal data, interrupt processing.
Be (S302/ is) within the scope of bound in the situation that in the judged result of S302, the advancing slip rate of the first roll mill stand adapts to that the error amount of correction portion 40 based on obtaining in S301 upgrades that thickness of slab, plate are wide, the front sliding rate table value of steel grade and speed, thereby learns (S303) by following formula (7).
f(H,W,SG,Speed)＝f(H,W,SG,Speed)+α·△f
1 (7)
In above-mentioned formula (7), α is learning coefficient, is the constant below 1.0.That is, the advancing slip rate of the first roll mill stand adapts to correction portion 40 and a part for the front sliding rate error calculating is applied to the front sliding rate of storing in front sliding rate DB41, thus sliding rate before revising.By such processing, can prevent undue correction.
After this, the first advancing slip rate adaptation of roll mill stand correction portion 40 implements to have been undertaken by S303 the upper lower limit value restriction (S304) of the front sliding rate that adapts to correction, end process.In S304, the advancing slip rate of the first roll mill stand adapts to correction portion 40 and implements as follows: if the front sliding rate after upgrading exceedes higher limit, the front sliding rate after upgrading is as higher limit, if the front sliding rate after upgrading is less than lower limit, the front sliding rate after upgrading is as lower limit.
Like this, in the rolling system of present embodiment, by the advancing slip rate predicted value of the first roll mill stand being adapted to revise in the operation of rolling, can also make the error minimize of front sliding rate predicted value.Consequently, the computational accuracy that mass flow thickness of slab calculates improves, and can realize the high precision int of mass flow thickness of slab control.
In addition, in the above-described embodiment, comprising in the rolling system of 3 rolling stands, to be illustrated to the example that is applied as of the 3rd roll mill stand 13 from the first roll mill stand 11.But, be not limited to, from the application of the first roll mill stand to the three roll mill stands, as long as same structure, can also be applied to from N roll mill stand to N+2 roll mill stand (N is integer).
In addition, the rolling control device 100 shown in Fig. 1 is realized by the combination of software and hardware.At this, the hardware of the each function to the rolling control device 100 for realizing present embodiment, describes with reference to Fig. 4.Fig. 4 is the block diagram that represents the hardware configuration of the information processor of the rolling control device 100 that forms present embodiment.As shown in Figure 4, the rolling control device 100 of present embodiment has and general server or PC(Personal Computer: PC) etc. the identical structure of the information processing terminal.
, the rolling control device 100 of present embodiment connects CPU(Central Processing Unit by bus 108: central processing unit) 101, RAM(Random Access Memory: random access memory) 102, ROM(Read Only Memory: read-only storage) 103, HDD(Hard Disk Drive: hard disk drive) 104 and I/F105.In addition, on I/F105, be connected with LCD(Liquid Crystal Display: liquid crystal display) 106 and operating portion 107.
CPU101 calculates member, controls the work of whole rolling control device 100.RAM102 is the storage medium of volatibility that can high-speed read-write information, and the operating area during as CPU101 process information is used.ROM103 reads special non-volatile memory medium, storing firmware supervisor.
HDD104 be can reading writing information non-volatile storage medium, storage OS(Operating System: operating system), various control program, application program etc.I/F105 connection bus 108 and various hardware, network etc. are to control.In addition, I/F105 also installs exchange message or the interface to roll mill input message as being used for for each.
LCD106 is the visual user interface for confirm the state of rolling control device 100 for operator.Operating portion 107 is that keyboard or mouse etc. are for the user interface to rolling control device 100 input messages for operator.In such hardware configuration, the program being stored in the storage mediums such as ROM103, HDD104 or not shown CD is read in RAM102, and CPU101 calculates according to this program, thereby forms software control portion.By the software control portion of formation described above and the combination of hardware, realize the function of the rolling control device 100 of present embodiment.
In addition, in the above-described embodiment, be all comprised in situation in rolling control device 100 taking each function and be illustrated as example.Both can in 1 information processor, realize whole functions like this, and also each function can be distributed to more information processor and realize.
Claims (4)
1. a rolling control device, controls the tandem roll mill that is rolled material by multiple rollers to carrying out rolling, it is characterized in that, comprising:
Front sliding rate obtaining section, described front sliding rate obtaining section from by the condition relevant to the described rolling that is rolled material and sliding rate be associated and the information that obtains, obtain the first roller corresponding to the condition relevant to the rolling that is rolled material in rolling to the front sliding rate of locating;
The first roller plate speed calculating part, described the first roller plate speed calculating part based on the right roller speed of described the first roller and described in the front sliding rate obtained, calculate the transporting velocity that is rolled material of the right outlet side of the first roller;
The first roller thickness of slab calculating part, described in the input side of described the first roller thickness of slab calculating part based on described the first roller, be rolled the thickness of slab of material, detect at the input side of described the first roller described in be rolled the transporting velocity of material and the transporting velocity that is rolled material of the outlet side that described the first roller of calculating is right, calculate the thickness of slab that is rolled material of the right outlet side of described the first roller;
Front sliding rate error calculating part, difference between the thickness of slab that is rolled material of the outlet side of described first roller of described front sliding rate error calculating part based on being rolled the thickness of slab of material described in detecting at the outlet side of described the first roller and calculate, calculates the error of obtained described front sliding rate;
Second roller thickness of slab calculating part, described second roller thickness of slab calculating part based on be rolled described in detecting at the right outlet side of described the first roller the transporting velocity that is rolled material of the right outlet side of the thickness of slab of material, described the first roller of calculating and detect at the right outlet side of second roller that is disposed at the right downstream of described the first roller described in be rolled the transporting velocity of material, calculate the thickness of slab that is rolled material of the right outlet side of described second roller; And
Second roller thickness of slab correction portion, the error of the described front sliding rate of described second roller thickness of slab correction portion based on calculating, revises the thickness of slab that is rolled material of the right outlet side of the described second roller calculating.
2. board thickness control apparatus as claimed in claim 1, it is characterized in that, comprise front sliding rate correction portion, the error of the described front sliding rate of described front sliding rate correction portion based on calculating, revise with rolling in the front sliding rate that is associated of the relevant condition of the rolling that is rolled material.
3. board thickness control apparatus as claimed in claim 2, it is characterized in that, described front sliding rate correction portion by a part for the error of the described front sliding rate calculating be applied to described rolling in the front sliding rate that is associated of the relevant condition of the rolling that is rolled material, thereby revise described front sliding rate.
4. a control method for rolling, controls the tandem roll mill that is rolled material by multiple rollers to carrying out rolling, it is characterized in that,
From by the condition relevant to the described rolling that is rolled material and sliding rate be associated and the information that obtains, obtain the first roller corresponding to the condition relevant to the rolling that is rolled material in rolling to the front sliding rate of locating;
Based on the right roller speed of described the first roller and described in the front sliding rate obtained, calculate the transporting velocity that is rolled material of the right outlet side of the first roller;
Described in input side based on described the first roller, be rolled the thickness of slab of material, detect at the input side of described the first roller described in be rolled the transporting velocity of material and the transporting velocity that is rolled material of the outlet side that described the first roller of calculating is right, calculate the thickness of slab that is rolled material of the right outlet side of described the first roller;
Difference between the thickness of slab that is rolled material of the outlet side of described the first roller based on being rolled the thickness of slab of material described in detecting at the outlet side of described the first roller and calculate, calculates the error of obtained described front sliding rate;
Based on be rolled described in detecting at the right outlet side of described the first roller the transporting velocity that is rolled material of the right outlet side of the thickness of slab of material, described the first roller of calculating and detect at the right outlet side of second roller that is disposed at the right downstream of described the first roller described in be rolled the transporting velocity of material, calculate the thickness of slab that is rolled material of the right outlet side of described second roller;
The error of the described front sliding rate based on calculating, revises the thickness of slab that is rolled material of the right outlet side of the described second roller calculating.
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| JP2012-266650 | 2012-12-05 | ||
| JP2012266650A JP6031344B2 (en) | 2012-12-05 | 2012-12-05 | Rolling control device, rolling control method, and rolling control program |
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| CN103846287B CN103846287B (en) | 2016-01-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598180A (en) * | 2014-11-14 | 2016-05-25 | 株式会社日立制作所 | Rolling control device, and rolling control method |
| CN108655179A (en) * | 2018-05-31 | 2018-10-16 | 太原晋西春雷铜业有限公司 | Metal plates and strips roll advancing slip control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105598180A (en) * | 2014-11-14 | 2016-05-25 | 株式会社日立制作所 | Rolling control device, and rolling control method |
| CN105598180B (en) * | 2014-11-14 | 2017-11-21 | 株式会社日立制作所 | Rolling control device and control method for rolling |
| CN108655179A (en) * | 2018-05-31 | 2018-10-16 | 太原晋西春雷铜业有限公司 | Metal plates and strips roll advancing slip control method |
| CN108655179B (en) * | 2018-05-31 | 2019-08-23 | 太原晋西春雷铜业有限公司 | Metal plates and strips roll advancing slip control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6031344B2 (en) | 2016-11-24 |
| JP2014111270A (en) | 2014-06-19 |
| CN103846287B (en) | 2016-01-06 |
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