CN104998916B - Energy-saving device of rolling device - Google Patents
Energy-saving device of rolling device Download PDFInfo
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- CN104998916B CN104998916B CN201510347021.5A CN201510347021A CN104998916B CN 104998916 B CN104998916 B CN 104998916B CN 201510347021 A CN201510347021 A CN 201510347021A CN 104998916 B CN104998916 B CN 104998916B
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Abstract
The invention aims to provide a control device of a rolling device. When rolled materials are cooled, cooling water is injected at the time when cooling efficiency is high, and therefore the water injection amount can be reduced, and energy consumption can be reduced. The device comprises a plurality of rolling racks (24) and cooling devices (50) between the racks. The rolling racks (24) are arranged on a rolling production line in series and used for rolling the rolled materials (12) of metal materials conveyed on the rolling production line. The cooling devices (50) between the racks are arranged between the rolling racks (24) and inject the cooling water to the conveyed rolled materials. The water injection amount of the cooling devices (50), located on the upstream side of the rolling production line, between the racks is large, and the water injection amount of the cooling devices (50), located on the downstream side of the rolling production line, between the racks is small.
Description
The present patent application is international application no for PCT/JP2011/069571, and international filing date is August in 2011 30,
Into the Application No. 201180073192.3 of National Phase in China, the patent of invention of entitled " energy saver of rolling equipment "
The divisional application of application.
Technical field
The present invention relates to the energy saver of rolling equipment.
Background technology
In thin plate hot rolling or heavy plate rolling, typically will be to the stocking of metal material perfusion cooling water, and by temperature control
To the target temperature for being given.Further, since Rolling roller or the roller roller for transmission and 1000 DEG C or so of high temperature stocking phase
Contact, therefore typically also Rolling roller or roller roller will be cooled down using cooling water.The cooling water of the latter is not only in thin plate warm
Roll or the rolling with high-temperature material as object such as heavy plate rolling used in, but also in the feelings with room temperature stocking as object such as cold rolling
Use under condition.
Rolling equipment has the circulating path of cooling water, and cooling water is temporarily drawn water to the casing of eminence in most cases
To use.For the movement of water, it is necessary to using pump and motor, its driving means for driving the pump.Thus, if water can be reduced
Circulation, then can reduce the energy needed for the driving of pump.
For example, in patent documentation 1 (Japanese Patent Laid-Open 2006-272339 the publication) " cooling means and dress of Rolling roller
Put " in, disclose in no stocking, the method for making the pump for sending cooling water carry out low cruise.
Prior art literature
Patent documentation
Patent documentation 1：Japanese Patent Laid-Open 2006-272339 publication
Patent documentation 2：Japanese Patent Laid-Open 2005-313202 publication
Patent documentation 3：Japanese Patent Laid-Open 2008-260047 publication
The content of the invention
Invent technical problem to be solved
However, in the cooling means disclosed by above-mentioned existing temperature control, patent documentation 1, not considering how efficiently
Make stocking, Rolling roller, roller roller cooling viewpoint.Therefore, the water injection rate of cooling water is more, needed for the driving of above-mentioned pump
Energy does not also fully reduce.Thus, it cannot be said that the energy-saving effect is sufficient.
The present invention is completed to solve the above problems, and be its object is to, there is provided the control of following rolling equipment
Device：When stocking is cooled down, by irrigating cooling water so as to reduce water injection rate, and in fact in the higher time point of cooling effectiveness
The reduction of existing energy consumption.
In addition, the present invention is completed to solve the above problems, its object is to, there is provided following rolling equipment
Control device：The cooling roller bed roller or during Rolling roller under non-rolling in-process stock, i.e. so-called idling conditions, by cooling effectiveness compared with
High time point irrigates cooling water so as to reduce water injection rate, and realizes the reduction of energy consumption.
Solve the technical scheme adopted by technical problem
In order to achieve the above object, the first invention is a kind of energy saver of rolling equipment, it is characterised in that included：
Multiple rolling machine frames, the plurality of rolling machine frame are configured on rolling line with tandem, in the rolling life
The stocking of the metal material transmitted in producing line is rolled；And
Interstand cooling device, the interstand cooling device are separately positioned between the plurality of rolling machine frame, and to institute
The stocking perfusion cooling water of transmission,
In the interstand cooling device, it is set as filling from the interstand cooling positioned at the rolling line upstream side
The water injection rate put is more, and the water injection rate from the interstand cooling device positioned at downstream is less.
In addition, in order to achieve the above object, the second invention is a kind of energy saver of rolling equipment, it is characterised in that bag
Include：
First rolling machine frame, the stocking of the metal material of first rolling machine frame to transmitting on rolling line roll
System；
Second rolling machine frame, second rolling machine frame are configured in the downstream of first rolling machine frame；
3rd rolling machine frame, the 3rd rolling machine frame are configured in the downstream of second rolling machine frame；
First interstand cooling device, the first interstand cooling device are arranged on first rolling machine frame and described
Between two rolling machine frames, and the stocking perfusion cooling water to being transmitted；
Second interstand cooling device, the second interstand cooling device are arranged on second rolling machine frame and described
Between three rolling machine frames, and the stocking perfusion cooling water to being transmitted；
Use state switch unit, the use state switch unit can roll the stocking to second rolling machine frame
State and do not roll the state of the stocking and switch over；And
Injection position setup unit, the water filling position setup unit roll the stocking and institute in first rolling machine frame
The water filling forbidden in the state of the second rolling machine frame does not roll the stocking from the first interstand cooling device is stated, and is permitted
May be from the water filling of chiller between second rolling machine frame.
In addition, in order to achieve the above object, the 3rd invention is a kind of energy saver of rolling equipment, it is characterised in that bag
Include：
Multiple rolling machine frames, the plurality of rolling machine frame are configured on rolling line with tandem, in the rolling life
The stocking of the metal material transmitted in producing line is rolled；And
Interstand cooling device, the interstand cooling device are separately positioned between the plurality of rolling machine frame, and to institute
The stocking perfusion cooling water of transmission,
The interstand cooling device is arranged on to compare swim thereon the rolling machine frame outlet side of side closer to downstream
The position of rolling machine frame entrance side.
In addition, in order to achieve the above object, the 4th invention is a kind of energy saver of rolling equipment, it is characterised in that bag
Include：
Multiple water filling devices, the plurality of water filling device are configured in the downstream of final rolling machine frame, and the stocking to being transmitted
Perfusion cooling water；
Restriction determining unit, the restriction determining unit is to the presence or absence of must be from the plurality of water filling device, continuously match somebody with somebody
The each water filling device put carries out the restriction of water filling and is judged；And
Water filling device is spaced setup unit, and the water filling device is spaced setup unit in the case where not having the restriction, every
Open more than one compartment of terrain and the water filling device irrigated by cooling water is set in the plurality of water filling device.
In addition, in order to achieve the above object, the 5th invention is a kind of energy saver of rolling equipment, it is characterised in that bag
Include：
Roller roller, the roller roller are arranged on rolling line, transmit stocking；
Multiple water filling devices, the plurality of water filling device irrigate cooling water to the roller roller；
Identifying unit, the identifying unit to the roller roller, whether sentence by the idling conditions in the stocking is not transmitted
It is fixed；And
Water injection unit during idle running, during the idle running, water injection unit makes institute in the case where roller roller is in the idling conditions
State multiple water filling devices cooling water is intermittently irrigated to the roller roller.
In addition, in order to achieve the above object, the 6th invention is a kind of energy saver of rolling equipment, it is characterised in that bag
Include：
Rolling roller, the Rolling roller are arranged on rolling machine frame, and the stocking to metal material is rolled；
Roller chiller, the roller chiller irrigate cooling water to the Rolling roller；
Identifying unit, the identifying unit to the Rolling roller, whether sentence by the idling conditions in the stocking is not rolled
It is fixed；
Rolling roller power consumption acquiring unit, the Rolling roller power consumption acquiring unit are revolved in low speed under the idling conditions
Turn the multiple operating points in region, obtained for driving the power consumption of the Rolling roller respectively；
Pump power consumption acquiring unit, the pump power consumption acquiring unit under the idling conditions, in the plurality of operating point,
The power consumption being driven for the pump to cooling water is provided to the roller chiller is obtained respectively；And
Operating point select unit, the operating point select unit in the plurality of operating point, are selected under the idling conditions
Select out the power consumption for driving the Rolling roller and the operating point for driving the power consumption sum of the pump minimum.
Invention effect
According to foregoing invention, the internal heat of stocking or rolling equipment (Rolling roller or roller roller) as cooled body is led to
Cross conduction of heat and be transferred to surface, cooling water is irrigated in the elevated time point of the surface temperature of cooled body.Surface temperature and cooling
The temperature difference of water is bigger, and cooling effectiveness is higher.According to the invention it is thus possible to reduce the water injection rate of cooling water, can realize using
In the reduction of the energy consumption for making cooling water circulation pump etc..
Description of the drawings
Fig. 1 be for illustrate thin plate hot-rolling mill and as object cooling water circulating path summary figure.
Fig. 2 is the figure for illustrating the computational methods of the conduction of heat of cooled body.
Fig. 3 is the center temperature of the cooled body for explanation when moment t1 and moment t2 irrigates cooling water to cooled body
The figure of the temperature change of degree and surface temperature.
Fig. 4 is the center temperature of the cooled body for explanation when moment t1 and moment t3 irrigates cooling water to cooled body
The figure of the temperature change of degree and surface temperature.
Fig. 5 is the figure for illustrating the feature structure in embodiments of the present invention 1.
Fig. 6 is the figure for illustrating the feature structure in embodiments of the present invention 2.
The flow chart of the control program during Fig. 7 is embodiments of the present invention 2, performed by control device.
Fig. 8 is the figure for illustrating the feature structure in embodiments of the present invention 3.
Fig. 9 is the figure for illustrating the feature structure in embodiments of the present invention 4.
Figure 10 is the figure for illustrating the other modes in embodiments of the present invention 4.
The flow chart of the control program during Figure 11 is embodiments of the present invention 4, performed by control device.
Figure 12 is the figure for illustrating the feature structure in embodiments of the present invention 5.
The flow chart of the control program during Figure 13 is embodiments of the present invention 5, performed by control device.
Figure 14 is the figure for illustrating the other modes in embodiments of the present invention 5.
Figure 15 is the figure for illustrating the feature structure in embodiments of the present invention 6.
Figure 16 is the figure for illustrating to the change of the roll surface temperature of the predetermined portions with regard to work roll surface.
Figure 17 is the figure for illustrating the feature structure in embodiments of the present invention 6.
The flow chart of the control program during Figure 18 is embodiments of the present invention 6, performed by control device.
Specific embodiment
Below, referring to the drawings, embodiments of the present invention are described in detail.Additionally, common in each figure want
Simultaneously the repetitive description thereof will be omitted for the additional identical label of element.
[basic structure of rolling equipment]
Fig. 1 is the figure for illustrating the basic structure of rolling equipment.In Fig. 1, illustrate as an example of rolling equipment
Thin plate hot-rolling mill 10, and as object cooling water circulating path summary.For convenience of description, illustrate in Fig. 1 thin
Plate hot-rolling mill, but be suitable for the present invention rolling equipment be not limited thereto.The present invention may also apply to constitute roughly the same following
Heavy plate mill of loop systems etc..In addition, in Fig. 1 simplification blood circulation is shown, be actually configured with more casings, pit, pump,
Motor.
In the rolling line upstream of the thin plate hot-rolling mill 10 shown in Fig. 1, being provided with the stocking 12 to metal material is carried out
The heating furnace 14 of heating.Stocking 12 is sent to the downstream (right side of Fig. 1 from rolling line upstream (left side of Fig. 1) by roller roller
Side).In the downstream of heating furnace 14, it is provided with for removing the descaler (scale of the oxide skin on 12 surface of stocking
breaker)16.The downstream of descaler 16 is provided with the roughing mill 18 of rolling in-process stock 12.In the downstream of roughing mill 18
It is provided with descaler 20.Till the downstream of descaler 20 is provided with and for stocking 12 to be rolled down to final thickness of slab
Finishing mill 22.
Finishing mill 22 includes the multiple rolling machine frames 24 configured with tandem.Each rolling machine frame 24 includes：Working roll 26, should
Working roll 26 is while contacting with stocking 12 while being rotated the Rolling roller to stretch relatively thin stocking 12；And supporting
Roller 28, the backing roll 28 is for being corrected to the flexure of the rotor shaft direction of working roll 26.It is provided with to enter which on working roll 26
Motor and its driving means that row drives.Backing roll 28 by the friction between working roll 26, with the rotation of working roll 26
Then rotated.
In the downstream of the finishing mill 22 shown in Fig. 1, the temperature (FDT of the stocking 12 to finishing mill outlet side is provided with：
Finisher Delivery Temperature (finishing mill outlet temperature)) the polish outlet side thermometer 30 that is measured.
In the downstream of polish outlet side thermometer 30, runout table (ROT is provided with：Run Out Table)32.Under ROT32
Trip, is provided with the temperature (CT to the stocking 12 before coiling machine：Coiling Temperature (coiling temperature)) be measured
Coiling temperature meter 34.In the downstream of coiling temperature meter 34, the coiling machine 36 that stocking 12 is batched in coiled type is provided with.Thus, it is thin
Plate hot-rolling mill 10 is made up of heating furnace 14, roughing mill 18, finishing mill 22, ROT32, coiling machine 36 etc. from upstream towards downstream.
Then, the summary of the circulating path of the cooling water with thin plate hot-rolling mill 10 as object is illustrated.The dotted line of Fig. 1
Arrow represents the flow direction of the cooling water of circulation.In thin plate hot-rolling mill 10, store cooling water casing 38 be arranged on than roughing mill 18,
The higher position of finishing mill 22, ROT32.In addition, in the position lower than roughing mill 18, finishing mill 22, ROT32, constituting cooling
The recovery path of water, is connected with purification cooling treatment device 40.Purification cooling treatment device 40 is recessed with cooling water by pipe arrangement
Hole 42 is connected.Cooling water pit 42 is connected with casing 38 by pipe arrangement.Pump 44 is provided with these pipe arrangements.On pump 44,
It is provided with the motor 46 and its driving means being driven to which.
Sometimes direct cooling water will be referred to as the cooling water for being directly poured into stocking 12 to be cooled down.In addition, sometimes
The cooling water that will be irrigated for cold rolling equipment (for example, working roll 26, backing roll 28, ROT32 etc.) is referred to as indirect cooling water.
Below, when the species of cooling water is distinguished, direct cooling water, indirect cooling water are designated as.
At least side of the entrance side and outlet side of the rolling machine frame 24 shown in Fig. 1 is provided with roller chiller 48.It is right
Roller chiller 48 provides cooling water from casing 38, can be to working roll 26, the perfusion indirect cooling water of backing roll 28.In addition,
Between adjacent rolling machine frame 24, interstand cooling device (ISC is provided with：Inter Stand Coolant)50.Finishing mill 22
Rolling machine frame 24 generally have 5～7, therefore interstand cooling device 50 has 4～6.To interstand cooling device 50 from case
Body 38 provides cooling water, can irrigate direct cooling water to the stocking 12 on roller roller.In addition, cold bed 52 is provided with ROT32.
On cold bed 52, multiple ROT water filling devices 54 are provided with.Cooling water is provided from casing 38 to ROT water filling devices 54, can be right
Stocking 12 on the roller roller of ROT32 irrigates direct cooling water.
Directly cooling water, indirect cooling water are all reclaimed after for cooling, to be recycled.However, used
Comprising foreign bodies such as iron powders in cooling water, or it is in high temperature.Therefore, for cooling water is returning briefly to purification cooling treatment device
40.Afterwards, in order to be used as cooling water again, then return it to cooling water pit 42, in order to add in water filling
Desired pressure, then drawn water to the casing 38 of eminence, used as cooling water.For the movement of these water, make
The motor 46 being driven with pump 44 and to which and its driving means.
In addition, the thin plate hot-rolling mill 10 shown in Fig. 1 includes control device 60.In the input side of control device 60, except even
It is connected to beyond above-mentioned polish outlet side thermometer 30, coiling temperature meter 34, is also associated with for detecting stocking 12 or rolling
The various sensors of the state of equipment.In the outlet side of control device 60, except being connected with above-mentioned roller chiller 48, frame
Between chiller 50, ROT water filling devices 54, the driving means of pump 44, enter can the rotary speed (mill speed) of working roll 26
Beyond the driving means that row changes, it is also associated with for controlling the various actuators of the state of stocking 12 or rolling equipment.In addition,
Control device 60 sets various control information (for example, the target of stocking 12 with the material or product specification according to stocking 12
Temperature) etc. set-up function.
Control device 60 is made according to predetermined program according to the output of above-mentioned various control information and various sensors
Various actuators carry out action, so as to control the state of stocking 12 or rolling equipment.
In rolling equipment as described above, typically cooling water will be irrigated to stocking, be controlled desired temperature.
In the case where the stocking to high temperature irrigates cooling water to cool down, the target temperature after cooling is given, in order to reach the mesh
Mark temperature, controls various actuators.In thin plate hot-rolling mill 10 shown in Fig. 1, give finishing mill 22 outlet side to control device 60
Stocking 12 temperature (FDT) target, control device 60 performs polish outlet side temperature to reach the FDT target temperatures
Degree control (FDTC：FDT is controlled).The operating side of FDTC is cold between mill speed and the frame that is arranged between rolling machine frame 24
But device 50.
In addition, in thin plate hot-rolling mill 10 shown in Fig. 1, the temperature of the stocking 12 before coiling machine 36 is given to control device 60
(CT) target, control device 60 perform the oiler temperature control (CTC of control CT to reach the CT target temperatures：CT is controlled
System).The operating side of CTC is provided in the ROT water filling devices 54 on the ROT32 between finishing mill 22 and coiling machine 36.
[design of the present invention]
Then, for the basic idea of the present invention common in each embodiment is illustrated.The basic idea of the present invention
Based on following formula.(1) formula is the formula of the heat transfer for representing water-cooled.In this explanation, heat transfer refer to the surface of cooled body with it is cold
But the movement of the heat energy between water.Conduction of heat refers to the movement of the heat energy of the inside of cooled body.
【Mathematical expression 1】
Qw=-hwAw(Tsurf-Tw) (1)
Here,
Qw:The hot-fluid [W] on the surface of cooled body
Wherein, the situation that heat is seized from cooled body is set to into Qw＜ 0.
hw:Heat transfer coefficient [W/mm between cooled body and cooling water2/K]
Aw:Surface area [the mm of cooled body2]
Tsurf:The surface temperature [K] of cooled body
Tw:Cooling water temperature [K]
In the case where the temperature of cooled body is higher than cooling water, the larger expression of absolute value of the hot-fluid obtained by (1) formula
Cooled body is easily cooled.As cooled body has certain volume, if therefore the volume is divided into into small component, and examine
Consider temperature change T of its i-th micro volume parti, then it is expressed from the next.
【Mathematical expression 2】
Here,
ρ:Density [the kg/mm of cooled body3]
CP:The specific heat [J/kg/deg] of cooled body
Vi:I-th micro volume [mm3]
Δt:Time change [s]
ΣQ:Hot-fluid sum.In hot-fluid, except the Q of (1) formulawIn addition, also exist and passed by radiation, air cooling convection current, heat
Caused component etc. is led, reply all of which is accounted for.Wherein, the situation that heat is seized from cooled body is set to into Q ＜
0。
Here, illustrate in Fig. 2 on the thickness direction of cooled body one point for five example.Marked from upper surface successively
1st, 5 numbering, is usually denoted as i-th.Differential equation is solved (in the calculus of finite differences for heat Calculation
One kind in the method for numerical analysis) in, it is however generally that, the upper figure institute of Fig. 2 is represented with the node (point) shown in figure below of Fig. 2
Micro volume after the segmentation shown, by the turnover of the heat between node stating as (2) formula.In the explanation of the present invention,
Using this method.
From (1) formula (2) formula, as the density of the physics value as cooled body, specific heat and micro volume cannot change
Become, therefore in order to reduce the temperature of cooled body, as long as increase Σ Q.Therefore following methods are considered.
(A) increase surface temperature T of cooled bodysurfWith temperature T of cooling waterwDifference.
(B) increase the heat transfer coefficient h between cooled body and cooling waterw。
(C) increase the surface area A of cooled bodyw。
With regard to (B), it is known that depending on apparent condition such as surface temperature and the oxide-films for being attached to metal material surface.
With regard to (C), in the case of the uneven surface of cooled body, surface area becomes big.But (B) is not (C) controllable amount.
(A) in, the temperature of cooling water is illustrated in fig. 1 as described above, due to being next as the result of cooling treatment device
The temperature of cooling water is realized, therefore can not be easily varied.However, the surface temperature of cooled body then can try every possible means to change
Become.
In the case where unit length, unit width are taken to cooled body, thickness is certainly existed, is had in a thickness direction
Temperature Distribution.First cooled down from surface due to general, therefore in the inside of thickness direction, with the temperature higher than surface.It is interior
Portion's heat spreads out of conduction of heat of the surface depending on cooled body.Conduction of heat by as a kind of pyroconductivity of physics value (with heat
The different physics values of transmission) representing.
In order to improve the surface temperature of cooled body, need to separate certain hour from internal high temperature part after cooling
Conduction of heat, wait heat transfer to surface.
Below, cooled body presence is to connect the processed metal material i.e. situation of stocking using milling train and is rolling
The situation of the rolling equipments such as roller.
In the present invention, based on above-mentioned consideration, in the case where cooled body is metal material, determine perfusion cooling water when
Between point, improve surface temperature to utilize from its internal heat.By carrying out water filling in the time point, so as to improve cooling
Efficiency, and improve energy-saving effect.
In addition, in the present invention, in the case where cooled body is rolling equipment, not carrying out rolling processing or not transmitting rolling
The state of material is the time point that perfusion cooling water is determined under so-called idling conditions, to utilize the heat inside rolling equipment
Measure to improve surface temperature.By water filling being carried out in the time point, so as to improve cooling effectiveness, and improve energy-saving effect.
Cooling means when combining above-mentioned idea is illustrated using Fig. 3 and Fig. 4.In Fig. 3 and Fig. 4, cooled body with when
The state at quarter t1, the state of moment t2, the order of the state of moment t3, move on straight line or in a rotational direction.Fig. 3 is represented
The central temperature (node 3) and surface temperature of the cooled body when moment t1 and moment t2 irrigates cooling water to cooled body
The temperature change of (node 1).During Fig. 4 represents the cooled body when moment t1 and moment t3 irrigates cooling water to cooled body
The temperature change of heart temperature (node 3) and surface temperature (node 1).
As shown in figure 3, in the case where being cooled down to cooled body using cooling water, moment t1 just carried out water filling it
Afterwards, the surface temperature of cooled body drastically declines.In Fig. 3, as the time point of the moment t2 after and then moment t1 is filled
Note cooling water, therefore just cooled down before the heat that internally has of cooled body fully spreads out of surface.Therefore,
(1) hot-fluid of formula diminishes, and cooling effectiveness is not good.
On the other hand, as shown in figure 4, after moment t1 carries out water filling, in the case where moment t2 does not carry out water filling, quilt
Heat inside cooling body can spread out of surface, therefore surface temperature is uprised.In the time point of the moment t3 shown in Fig. 4, with Fig. 3
The time point of shown moment t2 is compared, and the surface temperature of cooled body is raised.Therefore, if the moment t3 shown in Fig. 4 when
Between point carry out water filling, then the hot-fluid of (1) formula becomes big, and cooling effectiveness is uprised.
Below, each embodiment of the basic idea based on the above-mentioned present invention is illustrated.
In embodiment 1 to 4, it is that the situation of stocking 12 is illustrated to cooled body.Particularly, embodiment 1 to 3
In, the cooling to stocking 12 to being implemented by interstand cooling device 50 is illustrated.In embodiment 4, to being filled by ROT water fillings
The cooling to stocking for putting 54 enforcements is illustrated.
In embodiment 5, it is that the situation of roller roller is illustrated to cooled body.
In embodiment 6, it is that the situation of Rolling roller is illustrated to cooled body.
Embodiment 1.
In existing FDTC, in the case of operation interstand cooling device 50, cooling effectiveness and energy-saving effect are not considered
Ground, determines the water injection rate from interstand cooling device 50 for control to FDT target temperatures.In contrast to this, originally
The embodiment 1 of invention by when being cooled down to stocking by interstand cooling device, in the higher time point of cooling effectiveness
Perfusion cooling water, so as to reduce water injection rate, realizes the reduction for cooling water circulation energy consumption.
Fig. 5 is the figure for illustrating the feature structure in embodiments of the present invention 1.Fig. 5 is the finishing mill 22 shown in Fig. 1
Enlarged drawing.On finishing mill 22, multiple rolling machine frame 24a～24d are provided with tandem.In Fig. 5, stocking 12 is from left to right
Rolling.Between each rolling machine frame, interstand cooling device (ISC) 50a～50c is provided with, the stocking 12 to being transmitted is irrigated
Direct cooling water.Therefore, the temperature drop during transmitting towards right side (downstream) of stocking 12.The surface temperature of stocking 12 compared with
High is left side (upstream side), now from 50 water filling of chiller between frame to reduce temperature, in the case of the identical water yield
Cooling effectiveness is higher.
In the explanation of following each figure, in the case where especially rolling machine frame 24a～24d is not distinguished, rolling is simply designated as
Frame 24.In the case where especially interstand cooling device 50a～50c is not distinguished, interstand cooling device 50 is designated as.In addition,
The quantity of these devices is not limited to the quantity shown in each figure.
In present embodiment, in view of above-mentioned cooling effectiveness, is set to water injection rate of the upstream side from interstand cooling device 50
More, downstream is less.That is, in present embodiment, control device 60 is meeting the FDT determined by material according to stocking 12 etc.
Within the span of control of target temperature, it is set as the water injection rate from the interstand cooling device 50 positioned at rolling line upstream
More, the water injection rate from the interstand cooling device 50 positioned at downstream is less.In Fig. 5, roll from chiller direction between frame
The arrow of material represents the flow direction of cooling water, and the thickness of arrow represents the size of flow.As shown in figure 5, control device 60 is set as
Water injection rate from the interstand cooling device 50a positioned at upstream is most, from the interstand cooling device for being configured at downstream
The water injection rate of 50b, 50c is less.
According to this structure, compared with the water yield from all interstand cooling devices 50 is set to constant situation, energy
Stocking is cooled to the cooling water flow needed for FDT target temperatures by enough reduction.Thus, by improving cooling effectiveness, and reduce note
The water yield such that it is able to reduce the electricity for cooling water circulation pump etc..Therefore, it is possible to reduce the energy consumption in rolling.
Embodiment 2.
Fig. 6 is the figure for illustrating the feature structure in embodiments of the present invention 2.Fig. 6 is the finishing mill 22 shown in Fig. 1
Enlarged drawing.On finishing mill 22, multiple rolling machine frames 24 are provided with tandem.In the following description, by multiple roll mills
Frame 24 is designated as the first rolling machine frame 24a, the second rolling machine frame 24b, the 3rd rolling machine frame successively from rolling line upstream side
24c、···.Herein for convenient explanation, using the rolling machine frame 24 positioned at the most upstream of finishing mill 22 as the first roll mill
Frame 24a, but the invention is not limited in this.For example, also can be using the rolling machine frame 24 beyond most upstream as the first rolling
Frame 24a.Working roll 26a is provided with the first rolling machine frame 24a, working roll is provided with the second rolling machine frame 24b
26b, is provided with working roll 26c on the 3rd rolling machine frame 24c.In description below, not especially distinguish working roll 26a～
In the case of 26c, working roll 26 is simply designated as.
Each rolling machine frame 24 can be to making working roll 26 contact with stocking 12, for the operational mode of rolling；And do not make
Contacted with stocking 12, the be not used in operational mode of rolling of working roll 26 is switched over.Each rolling machine frame 24 is made with which fortune
Row mode carries out action, by control device 60 according to material or product specification of stocking 12 etc. determining.In addition, rolling in adjacent
Between frame processed 24, interstand cooling device (ISC) 50 is provided with.In Fig. 6, in the first rolling machine frame 24a and the second roll mill
The first interstand cooling device 50a is provided between frame 24b, is set between the second rolling machine frame 24b and the 3rd rolling machine frame 24c
It is equipped with the second interstand cooling device 50b.
What is represented in Fig. 6 is the situation that operational mode that is illusory, being not used in rolling is carried out to the second rolling machine frame 24b.
Illusory rolling machine frame can be any rolling machine frame, be set to the second rolling machine frame 24b here.Stocking 12 is by rolling machine frame
In the case that 24a is rolled, its heat also can be dissipated by working roll 26a.Therefore, after rolling machine frame 24a is just left, roll
The surface temperature of material 12 can decline.Due to heat recovery Effects, with rolling machine frame 24b, 24c is advanced to, surface temperature can become
It is high.Thus, compared to the first interstand cooling device 50a, using the second interstand cooling device 50b identical water injection rate feelings
Under condition, cooling effect is higher.
Therefore, in present embodiment, the first rolling machine frame 24a be used for roll, and the second rolling machine frame 24b be not used in and roll
In the state of system, cooling water is not irrigated from the first interstand cooling device 50a, and irrigated from the second interstand cooling device 50b
Cooling water.
Fig. 7 is the flow chart of the control program performed by control device 60 to realize above-mentioned action.As premise, control
Device processed 60 can determine it is to be used to roll by all rolling machine frames according to the material of stocking 12 or product specification, or will
A part is used to roll.Here, by rolling machine frame 24a or 24b some be used for rolling in the case of, by rolling machine frame
24a is used to roll.In addition, performing FDTC, the program shown in Fig. 7 is performed in the span of control that can reach FDT target temperatures.
In program shown in Fig. 7, it is first determined whether being used for the operational mode (step of rolling for the first rolling machine frame 24a
S100).It is being, in the case that the first rolling machine frame 24a is used for the operational mode for rolling, next to determine whether the second rolling
Frame 24b is not used in the operational mode (step S110) of rolling.It is being operational mode that the second rolling machine frame 24b is not used in rolling
In the case of, control device 60 is forbidden from the first interstand cooling device 50a to 12 water filling of stocking (step S120).Meanwhile, control
Device processed 60 is permitted from the second interstand cooling device 50b to 12 water filling of stocking (step S130).
On the other hand, in the process of step S110, in the feelings for being the operational mode that the second rolling machine frame 24b is used for rolling
Under condition, next, control device 60 is permitted from the first interstand cooling device 50a to 12 water filling of stocking and from the second frame
Between chiller 50b to both 12 water fillings of stocking (step S140-S150).
According to this structure, in the case where there is the rolling machine frame for being not used in rolling, due to can cooling effectiveness compared with
High time point carries out water filling, and stocking is cooled to the cooling water flow needed for FDT target temperatures therefore, it is possible to reduce.Thus,
By improving cooling effectiveness, and reduce water injection rate such that it is able to reduce the electricity for cooling water circulation pump etc..Accordingly, it is capable to
Enough energy consumptions reduced in rolling.
Additionally, also can be to the control of the structure application implementation mode 2 of above-mentioned embodiment 1.That is, control device 60 also may be used
Also include water filling ratio setup unit, the water filling ratio setup unit is rolled in the first rolling machine frame 24a and the second rolling machine frame 24b
In the state of stocking processed 12, permit the water filling from the first interstand cooling device 50a and the second interstand cooling device 50b,
And the water injection rate from the second interstand cooling device 50b is set as than the note from the first interstand cooling device 50a
The water yield will be lacked.
Embodiment 3.
Fig. 8 is the figure for illustrating the feature structure in embodiments of the present invention 3.Fig. 8 is the finishing mill 22 shown in Fig. 1
Enlarged drawing.Structure shown in Fig. 8 is essentially identical with the structure described in Fig. 5 or Fig. 6, but in matching somebody with somebody to interstand cooling device 50
Putting carries out on this point of improving difference.For example, in the case where stocking 12 is rolled by rolling machine frame 24a, its heat also can
Dissipated by working roll 26a.Therefore, after rolling machine frame 24a is just left, the surface temperature of stocking 12 can decline.If with work
Make water filling to be carried out after the surface temperature of the stocking 12 that roller 26a contacts and declines rises because heat recovers, then can improve
Cooling effectiveness.
Therefore, in present embodiment, interstand cooling device 50a is arranged on and compares the rolling machine frame for swimming side thereon
Position of the 24a outlet sides closer to the rolling machine frame 24b entrance sides in downstream.For other interstand cooling devices 50 also phase
Together.
As shown in Figures 5 and 6, it is however generally that, after interstand cooling device 50 is arranged on the outlet side of rolling machine frame 24
Nearby (downstream nearby), but in present embodiment, interstand cooling device 50 is arranged on the rolling machine frame 24 in downstream
Entrance side.Irrigate after due to rising because heat recovers in the surface temperature of the stocking 12 for contacting with working roll 26 and declining
Cooling water, therefore, it is possible to improve cooling effectiveness.By improving cooling effectiveness such that it is able to reduce water injection rate, can reduce is used for
The electricity of cooling water circulation pump etc..Therefore, it is possible to reduce the energy consumption in rolling.
Additionally, also can be to the structure of the structure application implementation mode 3 of above-mentioned embodiment 1 or embodiment 2.That is,
Each interstand cooling device 50 can be arranged on into the roll mill than its upstream side in the structure of embodiment 1 or embodiment 2
Position of 24 outlet side of frame closer to 24 entrance side of rolling machine frame in downstream.
Embodiment 4.
In CTC, in the case of the ROT water filling devices 54 of operation ROT32, the refrigerating mode of stocking 12 is according to guaranteeing sometimes
The viewpoint of the material such as intensity or ductility is determining.For example, have the prime for carrying out water filling cooling in the upstream side of ROT32 to cool down,
Or rear class cooling of water filling etc. is carried out in downstream.In the strict material of so-called material, need to manage refrigerating mode and to cold
But the temperature history of midway is also carried out control, but the not strict situation of material specification is also more.In this case, it is in the past only right
It is managed as the desired value of the CT of the outlet side temperature of ROT32.In contrast to this, in present embodiment, by by
When ROT water filling devices 54 are cooled down to the strict material of non-material, cooling water is irrigated in the higher time point of cooling effectiveness, so as to
Water injection rate can be reduced, the reduction for cooling water circulation energy consumption is realized.
Fig. 9 is the figure for illustrating the feature structure in embodiments of the present invention 4.Fig. 9 is the ROT32 shown in Fig. 1
Enlarged drawing.On ROT32, multiple ROT water filling devices 54a, 54b, 54c, from the final rolling machine frame 24 of finishing mill 22
Outlet side, continuously configures towards coiling machine 36 (diagram is omitted in Fig. 9).In description below, ROT water fillings are not especially being distinguished
Device 54a, 54b, 54c, in the case of, be simply designated as ROT water filling devices 54.
The above-mentioned interstand cooling device 50 of operation, so as to be measured by polish outlet side thermometer 30 in above-mentioned FDTC
Temperature it is consistent with desired value (FDT target temperatures).Operation ROT water filling devices 54, so as to be surveyed by coiling temperature meter 34 in CTC
The temperature measured is consistent with desired value (CT target temperatures).However, the operational approach of the ROT water filling devices 54 carried out by CTC
In, if such as ROT water filling devices 54a, 54b, 54c, 54d, 54e, so continuously water filling, the surface temperature of stocking 12
Degree will not rise completely because heat recovers, and 54b, 54c, the cooling effect of the cooling water of such consecutive hours diminish.
Therefore, in present embodiment, separate it is more than one be spaced in continuous multiple ROT water filling devices 54 in setting fill
The ROT water filling devices 54 of note cooling water.
As shown in figure 9, pass through as ROT water filling device 54a, 54c, 54e, cooled down at spaced intervals,
So as between 54a to 54c, heat recovers, the surface temperature of stocking 12 rises, and in the case of the identical water yield, cooling effect is carried
It is high.Figure 10 is the figure for representing the other modes in embodiments of the present invention 4.And, as shown in Figure 10, if as ROT water fillings are filled
54a, 54d, such interval are put, then cooling effectiveness is further improved.
In the experiment carried out by actual utilization chiller, if by 54a, 54b, 54c, so continuous water filling
When cooling effectiveness be set to 1, then as shown in Figure 9 54a, 54c, 54e, so separate cold in the case of a chiller
But efficiency be 1.5, as shown in Figure 10 54a, 54d, so separate two chillers in the case of cooling effectiveness be
1.8.Wherein, in the material of stocking 12, exist and must limit from each perfusion of ROT water filling devices 54 cooling water of continuous configuration etc.
In the case of, need to pay the utmost attention to quality compared to energy-conservation.
Figure 11 is the flow chart of the control program performed by control device 60 to realize above-mentioned action.Shown in Fig. 7
In program, first, control device 60 determine whether to be set with must from each ROT water filling devices 54a of continuous configuration, 54b,
54c, perfusion cooling water etc. limit (step S200).Control device 60 when rolling equipment is started working, according to stocking
12 material etc. limits setting labelling to set.For example, in the case where stocking 12 is the strict material of material, setting mark will be limited
Note is set as out.In step S200, above-mentioned restriction can be determined whether there is according to the open/close state for limiting setting labelling.
Must connect down in the case of the restriction of each perfusion of ROT water filling devices 54 cooling water of continuous configuration being set with
Come, control device 60 is set such that each perfusion cooling water of the ROT water filling devices 54 (step S210) from continuous configuration.
On the other hand, in step S200, in the case where being judged to not set above-mentioned restriction, next, control device 60
Separate it is more than one be spaced in each ROT water filling devices 54 in set for cooling ROT water filling devices (step S220).
According to this structure, in the case where stocking 12 is not the strict material of material, can reduce and stocking 12 is cooled to
Cooling water flow needed for CT target temperatures.Thus, by improving cooling effectiveness, and reduce water injection rate such that it is able to reduce and use
In the electricity of cooling water circulation pump etc..Therefore, it is possible to reduce the energy consumption in rolling.
Embodiment 5.
In embodiment 5, the control to cooling roller bed roller is illustrated.Roller roller perfusion to transmitting high temperature stocking is indirect
Cooling water deforms so that the temperature for preventing roller is uprised being cooled down.Really, in the state of transmission stocking, need
Water filling always.However, in the case where the i.e. so-called idling conditions of stocking is not transmitted, also carried out with certain water yield cold in the past
But, and irrespective of how efficiently cooling down to roller.In contrast to this, in the control of present embodiment, by idle running
Under state, indirect cooling water is irrigated to ROT water filling devices 54 in cooling effectiveness higher time point, so as to water injection rate can be reduced,
Realize the reduction for cooling water circulation energy consumption.
Figure 12 is the figure for illustrating the feature structure in embodiments of the present invention 5.Figure 12 is the ROT32 shown in Fig. 1
Enlarged drawing.Structure shown in Figure 12 is essentially identical with the structure described in Fig. 9, Figure 10, but in Figure 12, further illustrate for
The roller roller 62 that stocking 12 is transmitted from the upstream side (left side of Figure 12) of rolling line towards downstream (right side of Figure 12).This
Outward, Figure 12 represents that roller roller 62 does not transmit the idling conditions of stocking 12.On ROT32, it is provided with multiple for transmitting stocking 12
Roller roller 62.In addition, ROT water filling devices 54 are configured in the state of stocking 12 is not transmitted on roller roller 62, can be to roller-way
Roller 62 irrigates cooling water.
Control device 60 transmit high temperature stocking 12 when, in order to protect roller roller 62 itself, and to next time cooling
The temperature of stocking 12 produces impact, sometimes in stocking 12 by afterwards, from ROT water filling devices 54 together water filling, carrying out cooling roller bed
Roller 62.Now, for example, not make from the time of ROT water filling devices 54 together water filling to be set to lasting 5 seconds, but first at 2 seconds
Water filling together in clock, stops n second, then the water filling together in 2 seconds.The method is as follows：In a period of stopping n second, storage
There is the heat inside roller and spread out of roller surface, surface temperature rises, by carrying out water filling to which, so as to cooling effectiveness is improved,
Its result is to make total water injection time be reduced to 4 seconds from 5 seconds.Additionally, being set to while observing till next stocking arrives
Time, obtained longer by n second stopped as much as possible.
That is, in present embodiment, in the case of the idling conditions for not transmitting stocking is in roller roller 62, each ROT notes are made
Water installations 54 intermittently irrigate cooling water to roller roller 62.
Figure 13 is the flow chart of the control program performed by control device 60 to realize above-mentioned action.Shown in Figure 13
In program, first, determine whether the idling conditions (step S300) of stocking 12 is not transmitted on roller roller 62.
In the case where the idling conditions of stocking 12 is not transmitted in roller roller 62, control device 60 makes each ROT water fillings dress
Put 54 and intermittently irrigate cooling water (step S310).Specifically, as described above, water filling 2 seconds together first, stop the n seconds
Clock, further plays water filling 2 seconds.
On the other hand, the situation of the state of stocking 12 in the case where being not idling conditions, i.e., is just being transmitted in roller roller
Under, control device 60 makes ROT water filling devices 54 irrigate cooling water (step S320) always.
Figure 14 is the figure for illustrating the other modes in embodiments of the present invention 5.Typically on rolling line, no
The ROT32 being provided only with shown in Figure 12, but also the roller roller 64 for transferable material is provided with where more.Figure 14 is
The figure of vague generalization description is carried out to which, roller roller chiller 66 is configured between roller roller 64, in the process of transmission stocking
In and certain after being transmitted to stocking during in, by carrying out water filling from roller roller chiller 66, come cold
But roller roller 64.Roller roller chiller 66 is connected with the outlet side of control device 60.
In this case, also identical with Figure 12, after being transmitted to stocking 12, and non-continuous carries out water filling,
But water filling and not water filling are repeated by separating certain hour, so as to improve cooling effectiveness.Further, since in transmission
Heat during stocking 12 from stocking acceptance is larger, therefore irrigates cooling water always.
According to the structure of present embodiment, in the case where roller roller 62 or 64 does not transmit stocking 12, cooling can be reduced
Cooling water flow needed for roller roller 62,64.Thus, by improving cooling effectiveness, and reduce water injection rate such that it is able to reduce and use
In the electricity of cooling water circulation pump etc..Therefore, it is possible to reduce the energy consumption in rolling.
Embodiment 6.
In embodiment 6, the cooling control to Rolling roller is illustrated.In general, rolling height using Rolling roller
In the case of warm-rolling material, cause due to the heat from stocking roll temperature to rise, and cause thermal expansion, therefore in order to suppress heat
Expansion and protection roller, will cool down to roller.During rolling, need to irrigate cooling water always.On the other hand, not
Rolled under i.e. so-called idling conditions, the water injection rate for also being spaced to increase and decrease cooling water according to rolling sometimes.
In embodiments of the present invention 6, in the idling condition, considering within being cooled to the temperature upper limit of Rolling roller
Cooling water inflow restriction while, determine Rolling roller rotating speed and Rolling roller cooling water inflow so that for rotate rolling
Energy consumption sum needed for the energy consumption of roller and the cooling water for cold rolling roller are irrigated is minimum.In order that being present in Rolling roller
The heat in portion easily spreads out of surface, roller is slowly rotated, for separating the time interval and roller that are cooled down by cooling water
The efficiency of rotary speed carry out appropriate distribution.
Figure 15 is the figure for illustrating the feature structure in embodiments of the present invention 6.Figure 15 is the roll mill shown in Fig. 1
The enlarged drawing of frame 24.Rolling machine frame 24 is as described above, including the working roll (WR as Rolling roller：Work Roll) 26, backing roll
(BUR：Back Up Roll) 28, and roller chiller 48.Roller chiller 48 is separately positioned on the entrance of rolling machine frame 24
Side, outlet side.Specifically, roller chiller 48 by the WR chillers 48a that indirect cooling water is irrigated to working roll 26 and
The BUR chillers 48b that indirect cooling water is irrigated to backing roll 28 is constituted.In description below, cooling dress is not especially being distinguished
In the case of putting 48a, 48b, roller chiller 48 is referred to simply as.In addition, the indirect cooling water that will be irrigated from roller chiller 48
Also referred to as roller cooling water.
Figure 16 is the figure for illustrating to the change of the roll surface temperature in the predetermined portions on 26 surface of working roll.Such as
Shown in Figure 15, water filling is carried out from the WR chillers 48a for being arranged at two positions to working roll 26.Therefore, above-mentioned predetermined portions
Cool down twice when roller rotates a circle.When 26 low speed rotation of working roll is illustrated on Figure 16 cooling water get to working roll 26 when
Between and roll surface temperature change summary.Cooling water when working roll 26 rotates at a high speed is illustrated under Figure 16 and gets to working roll 26
Time and roll surface temperature change summary.
As shown in figure 16, during low speed rotation, with high speed rotate when compared with cooling water get to roller surface time it is elongated, arrive down
Time till primary cooling water gets to surface is also elongated.Therefore, it is possible to make the heat having inside working roll spread out of surface
Time become abundant.As a result, roll surface temperature is uprised, more efficiently can be cooled down.
Figure 17 is the figure for illustrating the feature structure in embodiments of the present invention 6.According to the described above of Figure 16, though
The efficiency of so preferably low speed rotation, but the motor that will also consider to make roller rotation, waste of roller mechanical system etc., not
Low speed gets over energy-conservation.Figure 17 is the figure for simpling illustrate the relation between the rotating speed of roller and power consumption.If in general, motor turn
The little then inefficient of speed is in addition in the case where the roller mechanical system middle (center) bearing combined with motor is the solid greases such as oils and fatss, low
Resistance in speed rotation caused by adhesiveness becomes big.Therefore the power consumption curve shown in Figure 17 is obtained sometimes.Now in point A, B, C
Under conditions of, the electricity of power consumption and the pump for providing roller cooling water respectively under 3 points to the motor of driven roller is carried out
Prediction is calculated, and the power consumption and the pump for providing roller cooling water of the motor of driven roller are selected in the certain point from point A, B, C
Power consumption sum it is minimum when operating point, run in the point.
Figure 18 is the flow chart of the control program performed by control device 60 to realize above-mentioned action.Shown in Figure 18
In program, first, determine whether the idling conditions (step S400) in the 26 non-rolling in-process stock 12 of working roll as Rolling roller.
In the case of the idling conditions in 26 non-rolling in-process stock 12 of working roll, control device 60 makes working roll 26 low
Run in rotary area.Additionally, multiple operating points (for example, three in Figure 17 by shown in point A, B, C in low rotary area
Different roller rotating speeds) under, the power consumption of motor and the pump to providing roller cooling water to driving working roll 26 is driven
The power consumption of motor calculated (step S410).Additionally, also can in advance to multiple operating points under above-mentioned electricity carry out
Measure and store.
Next, control device 60 is selected the power consumption of the motor for driving working roll 26 and provides roller cooling water
The minimum operating point (step S420) of the power consumption sum of pump.Afterwards, control device 60 it is selected go out operating point (roller turn
Speed) under make working roll 26 carry out action.
On the other hand, in step S400, in the case where being judged to be not at idling conditions, control device 60 is irrigated always
The cooling water (step S430) of the water yield needed for roller chiller 48.S
According to this structure, in the case of the non-rolling in-process stock of Rolling roller, drive can be made while cooling effectiveness is improved
The power consumption sum of the motor that the power consumption of the motor of dynamic Rolling roller and the pump to providing roller cooling water are driven is most
It is little.Due to taking into account efficiently to be cooled down by the energy for making Rolling roller rotation, therefore, it is possible to reduce total energy consumption.
Label declaration
10 thin plate hot-rolling mills
12 stockings
14 heating furnaces
16th, 20 descaler
18 roughing mills
22 finishing mills
24th, 24a-24d rolling machine frames
26th, 26a-26d working rolls
28 backing rolls
30 polish outlet side thermometeies
32 runout table (ROT：Run Out Table)
34 coiling temperature meters
36 coiling machines
38 casings
40 purification cooling treatment devices
42 cooling water pits
44 pumps
46 motor
48 roller chillers
48a WR chillers
48b BUR chillers
50th, 50a-50c interstand coolings device (ISC)
52 cold beds
54th, 54a-54e ROT water filling devices
60 control devices
62nd, 64 roller roller
66 roller roller chillers
Claims (1)
1. a kind of energy saver of rolling equipment, including：
Rolling roller, the Rolling roller are arranged on rolling machine frame, and the stocking to metal material is rolled；And
Roller chiller, the roller chiller irrigate cooling water to the Rolling roller,
Characterized in that, also including：
Identifying unit, to the Rolling roller, whether the idling conditions in the stocking is not rolled judges the identifying unit；
Rolling roller power consumption acquiring unit, the Rolling roller power consumption acquiring unit under the idling conditions, in low speed rotation area
Multiple operating points in domain, are obtained respectively for driving the power consumption of the Rolling roller；
Pump power consumption acquiring unit, the pump power consumption acquiring unit in the plurality of operating point, are distinguished under the idling conditions
Obtain the power consumption being driven for the pump to cooling water is provided to the roller chiller；And
Operating point select unit, the operating point select unit in the plurality of operating point, are selected under the idling conditions
For driving the power consumption and operating point for driving the power consumption sum of the pump minimum of the Rolling roller,
The low speed rotation region is for driving the power consumption of the Rolling roller according to the decline of the rotating speed of the Rolling roller
Decline, and the region increased in the case of rotating speed is further lowering of.
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| CN201510347021.5A CN104998916B (en) | 2011-08-30 | 2011-08-30 | Energy-saving device of rolling device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201180073192.3A CN103764306B (en) | 2011-08-30 | 2011-08-30 | The energy saver of rolling equipment |
| CN201510347021.5A CN104998916B (en) | 2011-08-30 | 2011-08-30 | Energy-saving device of rolling device |
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| CN201180073192.3A Division CN103764306B (en) | 2011-08-30 | 2011-08-30 | The energy saver of rolling equipment |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007058709A1 (en) * | 2007-08-04 | 2009-02-05 | Sms Demag Ag | Method for producing a strip of steel |
| CN101394945A (en) * | 2007-01-30 | 2009-03-25 | 东芝三菱电机产业系统株式会社 | Temperature control device for hot rolling mill |
| CN101537432A (en) * | 2008-03-21 | 2009-09-23 | 株式会社日立制作所 | Control device and control method for cooling frames of hot milling roll |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05317946A (en) * | 1992-05-22 | 1993-12-03 | Nkk Corp | Measuring device for surface temperature of strip |
| JPH11267730A (en) * | 1998-03-24 | 1999-10-05 | Kawasaki Steel Corp | Device for controlling temperature of hot rolled sheet and its method |
| JP2002143918A (en) * | 2000-11-14 | 2002-05-21 | Kawasaki Steel Corp | Cooling method in water-cooling zone of hot rolling line |
| JP2005313202A (en) * | 2004-04-28 | 2005-11-10 | Nisshin Steel Co Ltd | Coolant apparatus of rolling mill |
| JP2006272339A (en) * | 2005-03-28 | 2006-10-12 | Nisshin Steel Co Ltd | Method and device for cooling rolling roll |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394945A (en) * | 2007-01-30 | 2009-03-25 | 东芝三菱电机产业系统株式会社 | Temperature control device for hot rolling mill |
| DE102007058709A1 (en) * | 2007-08-04 | 2009-02-05 | Sms Demag Ag | Method for producing a strip of steel |
| CN101537432A (en) * | 2008-03-21 | 2009-09-23 | 株式会社日立制作所 | Control device and control method for cooling frames of hot milling roll |
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