CN105834218B - A kind of warm-rolling working roll and its internal and external temperature field control method - Google Patents
A kind of warm-rolling working roll and its internal and external temperature field control method Download PDFInfo
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- CN105834218B CN105834218B CN201510023325.6A CN201510023325A CN105834218B CN 105834218 B CN105834218 B CN 105834218B CN 201510023325 A CN201510023325 A CN 201510023325A CN 105834218 B CN105834218 B CN 105834218B
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- 238000005096 rolling process Methods 0.000 title claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 148
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000004364 calculation method Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 42
- 238000010438 heat treatment Methods 0.000 claims description 29
- 239000000498 cooling water Substances 0.000 claims description 21
- 230000000875 corresponding Effects 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000004519 grease Substances 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 4
- 238000005097 cold rolling Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 8
- 238000005098 hot rolling Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
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- 238000009749 continuous casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 1
- 229910004682 ON-OFF Inorganic materials 0.000 description 1
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- 230000001276 controlling effect Effects 0.000 description 1
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- 238000009941 weaving Methods 0.000 description 1
Abstract
The present invention relates to temperature-controlled rolling Working roll techniques.A kind of warm-rolling working roll, in working roll（1）Slot hole is beaten in end portion operation side, and installs rotary joint（7）And pipeline.A kind of warm-rolling working roll internal and external temperature field control method, first, under the premise of not influencing roll surface temperature field, with temperature monitor at roller shoulder（8）The temperature signal measured is first object, and the roller shoulder temperature data that it is monitored in real time is sent to intelligent processing unit, and result of calculation is sent to PLC control system by intelligent processing unit；Second, with return water temperature monitor（10）With inflow temperature monitor（6）Measured temperature is the second target, the water temperature data that it is monitored in real time is sent to intelligent processing unit, intelligent processing unit to temperature difference calculate and result is sent to PLC control system, flow of inlet water control valve（4）The instruction sent out according to PLC control system adjusts flow of inlet water in real time, to control temperature in rational roller.
Description
Technical field
The present invention relates to a kind of temperature-controlled rolling Working roll technique more particularly to a kind of warm-rolling working roll and its internal and external temperature fields
Control method.
Background technology
In rolling field, if workpiece rolls again after being heated, people are referred to as " hot rolling ", and (steel material is generally in Austria
900 DEG C of family name's temperature or more rolls)；Opposite, if being not added with hot-rolling stock, directly roll at normal temperatures, people are referred to as " cold
It rolls ".
However for " cold rolling " this word is only with respect to " hot rolling ", in practical cold continuous rolling production process, due to deformation
The generation of heat, after mill speed is substantially improved up, the temperature of roller surface will can reach several sometimes considerably beyond room temperature
Baidu.
General steel material is to " cold rolling " temperature-insensitive under normal temperature environment, however silicon steel and other materials such as magnesium material
Deng just having strict demand to room temperature to the rolling temperature between 800 DEG C.For this reason, it may be necessary to carry out " temperature-controlled rolling ".Here, herein
The rolling between 100~800 DEG C is described with a word " warm-rolling " more more accurate than " cold rolling ".
Following two situations need accurate temperature controlling, carry out warm-rolling：
1) pilot experiment and big production：The characteristic of rolled material itself has rolled piece and roll stringent temperature requirement, than
Such as high silicon steel, magnesium (it is very poor to be less than 200 DEG C of plasticity) material；
2) pilot experiment：New material, the research and development of new rolling mill practice, and solve the problems, such as production scene, be required for simulating and
The big similar environmental variance of production, including rolled piece temperature and roller surface temperature.
For this reason, it may be necessary to before the rolling heat the roll surface of cold-rolling mill, and set temperature is accurately controlled to realize " temperature
It rolls ".
However, from mechanical angle, after roll surface is by artificial heat, due to the presence of heat transfer, core of the roll, roller
Neck, and the bearing and bearing block that contact therewith all inevitably will follow heating, until the range allowed more than machinery：
After 80 DEG C, the lubricating grease in bearing block fails liquefaction；The roll crown that thermal expansion of rollers is formed afterwards to a certain extent is by shadow
Rolled piece thickness and precision is rung, is possible to stuck etc. in mill housing after bearing block expanded by heating.
Therefore, warm-rolling technique needs while maintaining roll surface target temperature, it is ensured that at core of the roll and roll neck
Low-temperature condition.Through retrieving, similar technology has therewith：1) continuous caster roller way --- due to the heat transfer of high-temperature continuous casting blank, can cause
Roll surface Wen Sheng.Solution is to beat deep hole from roll end, matches rotary joint, water flowing cooling.Roll surface temperature is lower, more has
Help the condensation of continuous casting billet watchcase, therefore helps to shorten " metallurgical length ".Therefore technological requirement is big flow, high heat exchange, to control
Warm required precision is not high.In addition, as live-roller gear, roller stress itself is small, without special intensity, rigidity and mechanical precision
Deng requirement.2) equipment --- the electromagnetic induction heating in the industries such as chemical industry, weaving, plastics for being heated to metallic conduit
Roller is that coil is placed in roller inner, is heated from inner circle to roller surfaces, it is also desirable to interior logical cooling water.
Invention content
The purpose of the present invention is to provide a kind of warm-rolling working roll and its internal and external temperature field control method, the warm-rolling working rolls
It is punched in roll end, matches rotary joint, realize core of the roll cooling, and working roll itself has enough strength and stiffness,
To ensure mechanical property requirements of the two kinds of operating modes of cold rolling and warm-rolling to roll.
In order to achieve the above technical purposes, the present invention adopts the following technical scheme that：
A kind of warm-rolling working roll beats slot hole in the fore side of work roll end, and slot hole is located at working roll core and gos deep into extremely
The working roll other end, slot hole do not penetrate through, and fore side installs rotary joint and pipeline, and being connected with a root long pipe in rotary joint stretches into
To working roll slot hole, long tube constitutes backwater hole as inlet opening, long pipe outer wall with working roll slot hole inner wall；Pipeline includes cooling
Inlet pipeline and water return pipeline；The strength and stiffness of the working roll meet the mechanical requirements of rolling, i.e.,：
In above formula：Wn (solid roll)：Roll Torsion Section modulus；
Wz (solid roll)：Roll bending-twisting section modulus；
Wn (perforated roll)：It include the roll Torsion Section modulus of slot hole；
Wz (perforated roll)：It include the roll bending-twisting section modulus of slot hole；
DRoll neck：The diameter of roll and bearing matching (stress) position, is less than the nominal diameter of roll；
dHole：Long bore dia on roll；
Punch aperture design range：
The warm-rolling working roll is in the case where cooling water flow is enough, warm-rolling working roll Torsion Section modulus or bending-twisting
Section modulus is more than 99% solid warm-rolling working roll.
The length of the working roll slot hole extends to transmission side shaft holder outer end position.
A kind of internal and external temperature field control method of warm-rolling working roll, cooling inlet pipeline import connect cooling water inlet switch valve
With flow of inlet water control valve, intake pressure monitor and inflow temperature monitor are connected on cooling inlet pipeline；Water return pipeline
On be connected to circling water flow rate monitor and return water temperature monitor；Roller shoulder temperature monitoring is installed at the roller shoulder of working roll both ends
Instrument；
The water pressure monitor, inflow temperature monitor, circling water flow rate monitor and the output of return water temperature monitor connect
Intelligent processing unit, the output of roller shoulder temperature monitor connect intelligent processing unit, and intelligent processing unit output meets PLC controls system
System, PLC control system output tap into Water flow control valve control cooling water inflow；
A kind of warm-rolling working roll internal and external temperature field control method, step are：
First, under the premise of not influencing roll surface temperature field, the temperature that is measured with temperature monitor at roller shoulder
Signal is first object, and temperature monitor monitors roller shoulder temperature in real time at roller shoulder, and by roller shoulder real time temperature
Data transmission to intelligent processing unit, intelligent processing unit calculates temperature, and result of calculation is sent to PLC controls system
System；
The instruction that flow of inlet water control valve is sent out according to PLC control system adjusts flow of inlet water in real time；Work as roll
It is corresponding to reduce cooling flow of inlet water when the roll surface temperature miss the mark temperature that the included temperature measurer of heating device measures；When rolling
The roll surface temperature that the included temperature measurer of roller heating device measures reaches target temperature, and the temperature that temperature monitor measures at roller shoulder
It is corresponding to increase cooling flow of inlet water when more than preset value, to ensure the temperature at roller shoulder always in the range that technique is preset；
Second, with the temperature difference measured by return water temperature monitor and inflow temperature monitor for the second target, return water temperature
Monitor monitors return water water temperature in real time, and inflow temperature monitor monitors water inlet water temperature in real time, and extremely by real time temperature data transmission
Intelligent processing unit, intelligent processing unit calculate the temperature difference of inflow temperature and leaving water temperature, result of calculation are sent
To PLC control system；
The instruction that flow of inlet water control valve 4 is sent out according to PLC control system adjusts flow of inlet water in real time, with control
Make temperature in rational roller, it is ensured that roller heat convex degree learning is in predetermined range.
A kind of warm-rolling working roll bearing block internal and external temperature field control method beats several group leaders in working roll two end axles bearing
Hole, every group of slot hole have two slot holes, and a slot hole is used as water return pipeline as cooling inlet pipeline, another slot hole, cool down into
Water lines import connects cooling water inlet switch valve and flow of inlet water control valve, and intake pressure monitor is connected on cooling inlet pipeline
With inflow temperature monitor；Circling water flow rate monitor and return water temperature monitor are connected on water return pipeline；It is installed at bearing block
There is bearing block temperature monitor；
The water pressure monitor, inflow temperature monitor, circling water flow rate monitor and the output of return water temperature monitor connect
Intelligent processing unit, the output of bearing block temperature monitor connect intelligent processing unit, and intelligent processing unit output meets PLC controls system
System, PLC control system output tap into Water flow control valve control cooling water inflow；
A kind of warm-rolling working roll bearing block internal and external temperature field control method, step are：
First, under the premise of not influencing roll surface temperature field, to be supervised close to temperature at roll surface on the inside of roll chock
It is first object to survey the temperature signal that measures of instrument, the real-time bearing block temperature of bearing block temperature monitor, and bearing block is warm in real time
Degrees of data is sent to intelligent processing unit, and intelligent processing unit calculates temperature, and result of calculation is sent to PLC controls system
System；
The instruction that flow of inlet water control valve is sent out according to PLC control system adjusts flow of inlet water in real time；Work as roll
It is corresponding to reduce cooling flow of inlet water when the roll surface temperature miss the mark temperature that the included temperature measurer of heating device measures；When rolling
The roll surface temperature that the included temperature measurer of roller heating device measures reaches target temperature, and close to temperature prison at roll surface on the inside of bearing block
It is corresponding to increase cooling flow of inlet water when the temperature that survey instrument measures is more than preset value, to ensure the temperature of bearing block always in technique
In default range；
Second, with the temperature difference measured by return water temperature monitor and inflow temperature monitor for the second target, return water temperature
Monitor monitors return water water temperature in real time, and inflow temperature monitor monitors water inlet water temperature in real time, and extremely by real time temperature data transmission
Intelligent processing unit, intelligent processing unit calculate the temperature difference of inflow temperature and leaving water temperature, result of calculation are sent
To PLC control system；
The instruction that flow of inlet water control valve is sent out according to PLC control system adjusts flow of inlet water in real time, with control
Temperature in rational bearing block, it is ensured that bearing and lubricant grease are less than 80 DEG C, and prevent bearing block from thermally expanding.
The working roll two end axles bearing makes a call to two groups of slot holes, and totally four slot holes are distributed in bearing block quadrangle respectively.
The present invention is to beat slot hole in work roll end, matches rotary joint, realize core cooling, and ensure working roll itself
Enough strength and stiffness, to ensure mechanical property requirements of the two kinds of operating modes of cold rolling and warm-rolling to roll；On roll chock
Slot hole is beaten, bearing block low temperature is kept.While ensureing roll surface preset heating temperature, core of the roll, roll are accurately controlled
The low-temperature condition of roll neck and the bearing, bearing block that contact therewith to ensure the smooth realization of warm-rolling function, while having concurrently cold
Roll (room temperature rolling) ability so that same set of cold-rolling mill and its working roll can do cold rolling production, can also do warm-rolling production.
The main innovation point of the present invention is to be cooled down from core to roll, reduces the temperature of all components other than roll surface
Degree, had both protected entire roll, and had also effectively controlled the roll thermal crown of roll.
The present invention is to need to realize that the new of roll surface heating is rolled in warm-rolling (cold rolling for being higher than room temperature) and course of hot rolling
Technique processed provides a kind of warm-rolling work roller structure pattern to match therewith and its control method of internal and external temperature field.Using this hair
Bright technical solution, and coordinate roll surface heating device, both it can realize roll surface while ensuring roll surface preset heating temperature
The temperature gradient of → roll neck → roller core portion and bearing block controls, while can guarantee that the strength and stiffness of hollow roll reach solid
99% or more of roller, to ensure the mechanical property requirements of roll, it is ensured that the realization of " warm-rolling " and " hot roll hot rolling " technique.
A kind of warm-rolling work roller structure pattern provided by the invention and its internal and external temperature field control method, can ensure roll
While surface temperature and roll mechanical performance, a series of problems for generating after roll heating is solved perfectly, ensure " warm-rolling " and
The realization of " hot roll hot rolling ".
Description of the drawings
Fig. 1 is warm-rolling working roll internal and external temperature field controling device structure diagram；
Fig. 2 is the internal and external temperature field controling device structure diagram that warm-rolling working roll adds bearing block to cool down；
Fig. 3 is structural schematic diagram of the embodiment of the present invention；
Fig. 4 is warm-rolling working roll and rotary joint connection diagram；
Fig. 5 is the structural schematic diagram beaten slot hole on bearing block and connect cooling water inlet and backwater outlet.
In figure：1 warm-rolling working roll (roll), 2 roll chocks (bearing block), 3 cooling water inlet switch valves, 4 flow of inlet water
Control valve, 5 intake pressure monitors, 6 inflow temperature monitors, 7 rotary joints, 71 long tubes, 8 roller shoulder temperature monitoring points, 9
Circling water flow rate monitor, 10 return water temperature monitors；11 roll heating devices, 12 support rollers.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.
Referring to Fig. 1, a kind of warm-rolling working roll is that the fore side in 1 end of working roll beats slot hole, and slot hole is located at working roll 1
Core simultaneously gos deep into 1 other end of working roll, and slot hole does not penetrate through, and the length of 1 slot hole of the working roll extends to transmission side shaft holder 2
Outer end position, referring to Fig. 1 and Fig. 2.Fore side installs rotary joint 7 and pipeline, and a root long pipe 71 is connected in rotary joint 7
It stretches in 1 slot hole of working roll, long tube 71 is used as inlet opening, 71 outer wall of long tube to constitute return water cavity with 1 slot hole inner wall of working roll
(backwater hole) is rotary joint and working roll connection diagram referring to Fig. 4, Fig. 4.Rotary joint 7 is the prior art, can be in the market
Purchase.Rotary joint 7 connects 1 part of working roll and can be rotated with working roll 1, and another part is fixed and is connected to outside rotary joint
The cooling inlet pipeline and cooling backwater pipeline in portion.Roll 1 is primarily subjected to twisting resistance and bending force at work, and the present invention is pair
Former solid roll is punched, and in addition to this, does not change other ginsengs such as roll original structure size, material and roll surface hardness
Number, so need to only consider the calculation and check of roller performance the variation of its antitorque characteristic and transverse property before and after punching.For
Ensure the enough strength and stiffness of working roll itself, to take into account cold rolling function, design punch aperture when, with pipe it is antitorque,
Module of anti-bending section formula is design considerations：
The strength and stiffness of the working roll meet the mechanical requirements of rolling, i.e.,：
In above formula：Wn (solid roll)：Roll Torsion Section modulus；
Wz (solid roll)：Roll bending-twisting section modulus；
Wn (perforated roll)：It include the roll Torsion Section modulus of slot hole；
Wz (perforated roll)：It include the roll bending-twisting section modulus of slot hole；
DRoll neck：The diameter of roll and bearing matching (stress) position, is less than the nominal diameter of roll；
dHole：Long bore dia on roll；
To ensure the strength and stiffness of roll, in the case where reaching cooling effect, the smaller the better, roll is answered in punching aperture
Punch aperture design range：
It is cold rolling ability to be taken into account more than 96%；In the case where cooling water flow is enough, warm-rolling working roll Torsion Section
Modulus or bending-twisting section modulus are more than 99% solid warm-rolling working roll.
Referring to Fig. 1, a kind of internal and external temperature field control method of warm-rolling working roll, the cooling inlet pipeline import connects cooling
Water inlet switch valve 3 and flow of inlet water control valve 4 are connected to intake pressure monitor 5 and inflow temperature prison on cooling inlet pipeline
Survey instrument 6；Circling water flow rate monitor 9 and return water temperature monitor 10 are connected on water return pipeline；It is installed at 1 both ends roller shoulder of working roll
There is roller shoulder temperature monitor 8；The water pressure monitor 5, inflow temperature monitor 6, circling water flow rate monitor 9 and return water
The output of temperature monitor 10 connects intelligent processing unit (not shown), and the output of roller shoulder temperature monitor 8 connects Intelligent treatment
Unit, intelligent processing unit output connect PLC control system (not shown), and PLC control system output taps into water flow control
Valve 4 controls cooling water inflow.Electric switching valve or pneumatic on-off valve may be used in the cooling water inlet switch valve 3, or manually
Switch valve.The present invention is to be cooled down from core of the roll to roll, reduces the temperature of all components other than roll surface, both protected
Entire roll, also effectively controls the roll thermal crown of roll.
A kind of warm-rolling working roll internal and external temperature field control method, step are：
First, under the premise of not influencing roll surface temperature field, the temperature that is measured with temperature monitor 8 at roller shoulder
Signal is first object, the monitoring roller shoulder temperature in real time of temperature monitor 8 at roller shoulder, and by roller shoulder real time temperature
Data transmission to intelligent processing unit, intelligent processing unit calculates temperature, and result of calculation is sent to PLC controls system
System；
The instruction that flow of inlet water control valve 4 is sent out according to PLC control system adjusts flow of inlet water in real time；When rolling
It is corresponding to reduce cooling flow of inlet water when the roll surface temperature miss the mark temperature that the included temperature measurer of roller heating device 11 measures；
When the roll surface temperature that measures of temperature measurer that roll heating device 11 carries reaches target temperature, and temperature monitor measures at roller shoulder
Temperature when being more than preset value, it is corresponding to increase cooling flow of inlet water, to ensure the temperature at roller shoulder always in the preset model of technique
In enclosing；The roll heating device 11 roll surface temperature measurer included with it constitutes Cryocooler Temperature Closed Loop Control System, to ensure technique institute
The temperature needed.
Second, with the temperature difference measured by return water temperature monitor 10 and inflow temperature monitor 6 for the second target, return water temperature
The monitoring return water water temperature in real time of monitor 10, the water temperature of monitoring water inlet in real time of inflow temperature monitor 6 are spent, and real time temperature data are passed
It send to intelligent processing unit, intelligent processing unit calculates the temperature difference of inflow temperature and leaving water temperature, by result of calculation
It is sent to PLC control system；
The instruction that flow of inlet water control valve 4 is sent out according to PLC control system adjusts flow of inlet water in real time, with control
Make temperature in rational roller, it is ensured that roller heat convex degree learning is in predetermined range.
Referring to Fig. 2, a kind of warm-rolling working roll bearing block internal and external temperature field control method is the inside and outside temperature in warm-rolling working roll
It spends on the basis of field control method by increasing the cooling control to roll chock 2 come what is realized, is in 1 two end axles of working roll
It is punched in bearing 2, punching generally makes a call to two groups of slot holes, and every group two totally four slot holes, four slot holes are distributed in a bearing respectively
The quadrangle of seat 2, referring to Fig. 5, wherein：One slot hole connects cooling inlet pipeline, another slot hole takes back water lines, two slot hole strings
Connection connection, to constitute one group of cooling circuit.Cooling inlet pipeline and the connect device of water return pipeline and control principle and warm-rolling work
It is identical to make the mode that roller internal and external temperature field control method is connect, specially：Cooling inlet pipeline import connects cooling water inlet switch valve
With flow of inlet water control valve, intake pressure monitor and inflow temperature monitor are connected on cooling inlet pipeline；Water return pipeline
On be connected to circling water flow rate monitor and return water temperature monitor；Bearing block temperature monitor is installed at bearing block；
The water pressure monitor, inflow temperature monitor, circling water flow rate monitor and the output of return water temperature monitor connect
Intelligent processing unit, the output of bearing block temperature monitor connect intelligent processing unit, and intelligent processing unit output meets PLC controls system
System, PLC control system output tap into Water flow control valve control cooling water inflow；
A kind of warm-rolling working roll bearing block internal and external temperature field control method, step are：
First, under the premise of not influencing roll surface temperature field, to be supervised close to temperature at roll surface on the inside of roll chock
It is first object to survey the temperature signal that instrument measures, and bearing block temperature monitor monitors bearing block temperature in real time, and bearing block is real
When temperature data be sent to intelligent processing unit, intelligent processing unit calculates temperature, by result of calculation be sent to PLC control
System processed；
The instruction that flow of inlet water control valve is sent out according to PLC control system adjusts flow of inlet water in real time；Work as roll
It is corresponding to reduce cooling flow of inlet water when the roll surface temperature miss the mark temperature that the included temperature measurer of heating device measures；When rolling
The roll surface temperature that the included temperature measurer of roller heating device measures reaches target temperature, and close to temperature prison at roll surface on the inside of bearing block
It is corresponding to increase cooling flow of inlet water when the temperature that survey instrument measures is more than preset value, to ensure the temperature of bearing block always in technique
In default range；
Second, with the temperature difference measured by return water temperature monitor and inflow temperature monitor for the second target, return water temperature
Monitor monitors return water water temperature in real time, and inflow temperature monitor monitors water inlet water temperature in real time, and extremely by real time temperature data transmission
Intelligent processing unit, intelligent processing unit calculate the temperature difference of inflow temperature and leaving water temperature, result of calculation are sent
To PLC control system；
The instruction that flow of inlet water control valve is sent out according to PLC control system adjusts flow of inlet water in real time, with control
Temperature in rational bearing block, it is ensured that bearing and lubricant grease are less than 80 DEG C, and prevent bearing block from thermally expanding.
Roll chock internal and external temperature field is controlled, mainly to exempt from the lubricating oil in bearing block or lubricating grease failure,
Also for bearing block expanded by heating is avoided, stuck situation in memorial archway is caused, needs the temperature according to bearing block inner face to adjust
The cooling flow of inlet water of nodal axisn bearing.Since common grease has just failed at 80 DEG C or more, adjusted for upper limit value with 80 DEG C
The cooling flow of inlet water of section.In the case where not increasing roll heater wattage output, cooling water flow can be larger, control
Precision need not also reach the precision of core of the roll cooling.
Embodiment
Referring to Fig. 3, warm-rolling working roll Torsion Section modulus or bending-twisting section modulus are taken by 99% solid warm-rolling working roll
Value, so that it is determined that warm-rolling working roll punches diameter.By Fig. 1 or Fig. 2 be equipped with corresponding cooling inlet pipeline, water return pipeline, valve member,
Measuring instrument and rotary joint, and it is equipped with corresponding intelligent control unit and PLC control system；
A kind of warm-rolling working roll bearing block internal and external temperature field control method,
Its general principle is：The roll surface heating temperature of technological requirement must satisfy, and cooling water flow cannot be excessive, in order to avoid
More than the heating efficiency of roll heating device 11, flow-rate adjustment mode is not premised on influencing roll surface predetermined temperature；
First, under the premise of not influencing roll surface temperature field, with the temperature signal of the feedback of temperature monitor 8 at roller shoulder
Flow of inlet water control valve 4 is automatically adjusted for first object, is measured when the included temperature measurer of roll heating device 11 (heat source)
It is corresponding to reduce cooling flow of inlet water when roll surface temperature miss the mark temperature；When the temperature measurer that roll heating device 11 carries is surveyed
Roll surface temperature reach target temperature, and when the temperature that temperature monitor 8 measures at roller shoulder is more than preset value, accordingly increase cold
But flow of inlet water, to ensure the temperature at roller shoulder always in the range that technique is preset.Roll heating device 11 is included with it
Roll surface temperature measurer constitutes Cryocooler Temperature Closed Loop Control System, to ensure the temperature needed for technique.
Second, come accordingly for the second target with the temperature difference measured by return water temperature monitor 10 and inflow temperature monitor 6
Flow of inlet water control valve 4 is adjusted, to control temperature in rational roller, it is ensured that roller heat convex degree learning in predetermined range, value by
Technique determines；
The cooling water inlet of bearing block 2 is opened and controlled to third when necessary, to protect bearing and lubricant grease (80 DEG C of ＜),
And prevent bearing block 2 from thermally expanding.Because when bearing block expanded by heating to a certain extent after, can it is stuck in mill housing, influence
Under the positive normal pressure of roll and lift.
The working roll Temperature Field Control method of the embodiment of the present invention roll surface in ensureing warm-rolling and course of hot rolling
While preset heating temperature, the reasonable temperature in roller shoulder → roll neck → roller core portion and bearing block is accurately controlled by gradient, it is ensured that roll
The direct motion of process processed.
The above is merely preferred embodiments of the present invention, be not intended to limit the scope of the present invention, therefore, it is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention should be included in the protection model of the present invention
Within enclosing.
Claims (3)
1. a kind of warm-rolling working roll internal and external temperature field control method, it is characterized in that：
First, under the premise of not influencing roll surface temperature field, believed with the temperature that temperature monitor (8) measures at roller shoulder
Number it is first object, temperature monitor (8) monitoring roller shoulder temperature in real time at roller shoulder, and by roller shoulder real time temperature
Data transmission to intelligent processing unit, intelligent processing unit calculates temperature, and result of calculation is sent to PLC controls system
System；
The instruction that flow of inlet water control valve (4) is sent out according to PLC control system adjusts flow of inlet water in real time；Work as roll
It is corresponding to reduce cooling flow of inlet water when the roll surface temperature miss the mark temperature that the included temperature measurer of heating device (11) measures；
When the roll surface temperature that the temperature measurer that roll heating device (11) carries measures reaches target temperature, and temperature monitor survey at roller shoulder
It is corresponding to increase cooling flow of inlet water when the temperature obtained is more than preset value, to ensure that the temperature at roller shoulder is preset in technique always
In range；
Second, with the temperature difference measured by return water temperature monitor (10) and inflow temperature monitor (6) for the second target, return water temperature
Spend monitor (10) monitoring return water water temperature in real time, inflow temperature monitor (6) water temperature of monitoring water inlet in real time, and by real time temperature number
According to intelligent processing unit is sent to, intelligent processing unit calculates the temperature difference of inflow temperature and leaving water temperature, will calculate
As a result it is sent to PLC control system；
The instruction that flow of inlet water control valve (4) is sent out according to PLC control system adjusts flow of inlet water in real time, with control
Temperature in rational roller, it is ensured that roller heat convex degree learning is in predetermined range；
Fore side in working roll (1) end beats slot hole, and slot hole is located at working roll (1) core and gos deep into another to working roll (1)
End, slot hole do not penetrate through, and the length of working roll (1) slot hole extends to transmission side shaft holder (2) outer end position, fore side peace
Rotary joint (7) and pipeline are filled, being connected with a root long pipe (71) in rotary joint (7) stretches in working roll slot hole, long tube
(71) inlet opening, long tube (71) outer wall is used as to constitute backwater hole with working roll slot hole inner wall；Pipeline include cooling inlet pipeline and
Water return pipeline；The strength and stiffness of the working roll (1) meet the mechanical requirements of rolling, i.e.,：
Solid roll
Solid roll
Perforated roll
Perforated roll
In above formula：Solid roll Wn：Roll Torsion Section modulus；
Solid roll Wz：Roll bending-twisting section modulus；
Perforated roll Wn：It include the roll Torsion Section modulus of slot hole；
Perforated roll Wz：It include the roll bending-twisting section modulus of slot hole；
DRoll neck：At the roller shoulder of roll, i.e. the diameter of roll and bearing block matching part is less than the nominal diameter of roll；
dHole：Long bore dia on roll；
Punch aperture design range：
The cooling inlet pipeline import connects cooling water inlet switch valve (3) and flow of inlet water control valve (4), in cooling inlet pipeline
On be connected to intake pressure monitor (5) and inflow temperature monitor (6)；Be connected on water return pipeline circling water flow rate monitor (9) and
Return water temperature monitor (10)；Roller shoulder temperature monitor (8) is installed at the roller shoulder of working roll (1) both ends；
The intake pressure monitor (5), inflow temperature monitor (6), circling water flow rate monitor (9) and return water temperature monitor
(10) output connects intelligent processing unit, and roller shoulder temperature monitor (8) output connects intelligent processing unit, and intelligent processing unit is defeated
Go out and connect PLC control system, PLC control system output taps into Water flow control valve (4) control cooling water inflow.
2. warm-rolling working roll internal and external temperature field control method according to claim 1, it is characterized in that：The control method includes：
Warm-rolling working roll bearing block internal and external temperature field control method, step are：
First, under the premise of not influencing roll surface temperature field, with roll chock inside close to bearing block temperature at roll surface
The temperature signal that monitor measures is first object, and bearing block temperature monitor monitors bearing block temperature in real time, and by bearing block
Real time temperature data transmission to intelligent processing unit, intelligent processing unit calculates temperature, and result of calculation is sent to PLC
Control system；
The instruction that flow of inlet water control valve is sent out according to PLC control system adjusts flow of inlet water in real time；When roll heats
It is corresponding to reduce cooling flow of inlet water when the roll surface temperature miss the mark temperature that the included temperature measurer of device measures；When roll plus
The roll surface temperature that the included temperature measurer of thermal measures reaches target temperature, and close to bearing block temperature at roll surface on the inside of bearing block
It is corresponding to increase cooling flow of inlet water when the temperature that monitor measures is more than preset value, to ensure the temperature of bearing block always in work
In the default range of skill；
Second, with the temperature difference measured by return water temperature monitor and inflow temperature monitor for the second target, return water temperature monitoring
Instrument monitors return water water temperature in real time, and inflow temperature monitor monitors water inlet water temperature in real time, and by real time temperature data transmission to intelligence
Processing unit, intelligent processing unit calculate the temperature difference of inflow temperature and leaving water temperature, and result of calculation is sent to PLC
Control system；
The instruction that flow of inlet water control valve is sent out according to PLC control system adjusts flow of inlet water in real time, reasonable to control
Bearing block in temperature, it is ensured that bearing and lubricant grease are less than 80 DEG C, and prevent bearing block from thermally expanding；
Several groups slot hole is beaten in working roll two end axles bearing (2), every group of slot hole has two slot holes, a slot hole to intake as cooling
Pipeline, another slot hole connect cooling water inlet switch valve and flow of inlet water control valve as water return pipeline, cooling inlet pipeline import,
It is connected to intake pressure monitor and inflow temperature monitor on cooling inlet pipeline；Circling water flow rate monitoring is connected on water return pipeline
Instrument and return water temperature monitor；Bearing block temperature monitor is installed at bearing block；
The intake pressure monitor, inflow temperature monitor, circling water flow rate monitor and the output of return water temperature monitor connect intelligence
Energy processing unit, the output of bearing block temperature monitor connect intelligent processing unit, and intelligent processing unit output connects PLC control system,
PLC control system output taps into Water flow control valve control cooling water inflow.
3. warm-rolling working roll internal and external temperature field control method according to claim 2, it is characterized in that：The working roll both ends
Bearing block (2) makes a call to two groups of slot holes, and totally four slot holes are distributed in bearing block (2) quadrangle respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023325.6A CN105834218B (en) | 2015-01-16 | A kind of warm-rolling working roll and its internal and external temperature field control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023325.6A CN105834218B (en) | 2015-01-16 | A kind of warm-rolling working roll and its internal and external temperature field control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105834218A CN105834218A (en) | 2016-08-10 |
| CN105834218B true CN105834218B (en) | 2018-08-31 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921723A (en) * | 2012-11-06 | 2013-02-13 | 西北机器有限公司 | Roll mechanism of small-size copper strip rolling mill |
| CN103599942A (en) * | 2013-11-20 | 2014-02-26 | 银邦金属复合材料股份有限公司 | Roll cooling method for rolling of composite metal and special cooling device |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921723A (en) * | 2012-11-06 | 2013-02-13 | 西北机器有限公司 | Roll mechanism of small-size copper strip rolling mill |
| CN103599942A (en) * | 2013-11-20 | 2014-02-26 | 银邦金属复合材料股份有限公司 | Roll cooling method for rolling of composite metal and special cooling device |
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