CN107470374A - Working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling - Google Patents
Working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling Download PDFInfo
- Publication number
- CN107470374A CN107470374A CN201710667465.6A CN201710667465A CN107470374A CN 107470374 A CN107470374 A CN 107470374A CN 201710667465 A CN201710667465 A CN 201710667465A CN 107470374 A CN107470374 A CN 107470374A
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- Prior art keywords
- roll
- branch
- rolling
- temperature
- magnesium alloy
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Links
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 36
- 238000005096 rolling process Methods 0.000 title claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000002737 fuel gas Substances 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000012806 monitoring device Methods 0.000 claims description 2
- 238000011217 control strategy Methods 0.000 abstract description 8
- 239000010731 rolling oil Substances 0.000 description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
Abstract
The invention discloses working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling, it is divided into temperature elevation system, cooling system, system for detecting temperature and control system, temperature elevation system, cooling system, system for detecting temperature are uniform in roll axial location, control system adjusts the size of flow valve to be controlled in real time to heating system, cooling system by the feedback signal of its excess-three system, control strategy adoption rate-plus-integration-plus-differentiated manner, reach the purpose that roller temperature is accurately controlled along roll axial direction subregion.
Description
Technical field
The present invention relates to material processing field, working roll temperature control fills in specifically a kind of magnesium alloy strip operation of rolling
Put.
Background technology
Magnesium alloy is metal most light in structural material, be gradually applied in recent years Aero-Space, defence and military,
The fields such as automobile, telecommunications, while requirement of these fields to its mechanical property is also improving constantly.Traditional casting magnesium closes
Gold can not meet to require gradually, and the wrought magnesium alloy product by extruding, forging, the technique productions such as roll is with higher
Intensity, more preferable ductility, more diversified mechanical property.Wherein, important means of the rolling as magnesium alloy plastic working
Significant progress is obtained.But magnesium alloy is close-packed hexagonal structure, slip system is less, the plasticity under room temperature and cryogenic conditions
It is poor, and the understanding of magnesium alloy plastic deformation mechanism comprehensively and is goed deep into not enough so far, magnesium alloy plate is prepared and its rolled
The research of forming technology processed is still in the junior stage.
With the reduction of thickness, the rolling of magnesium alloy becomes further difficult.Due to plasticity is too low under magnesium alloy normal temperature can not
Rolling, therefore rolling magnesium alloy must be carried out at a certain temperature, but too high temperature can be such that Mg alloy surface occurs seriously
It is adhered while plate form control difficulty also steeply rises.Substantial amounts of testing surface magnesium alloy rolling continues one section of narrower humidity province
Interior progress, another aspect magnesium alloy specific heat capacity is smaller more sensitive to temperature change, and this requires to roll magnesium alloy
Work roll temperature be accurately controlled.
In terms of traditional roller temperature control device primarily focuses on heating rather than in terms of temperature control, the control to temperature
System is not enough accurately with sensitivity, while traditional roller temperature control strategy is to carry out overall control for roll.However, due to
Roll barrel carries the reasons such as negative amount of deflection body of roll radiating simultaneously, often because of the body of roll during rolling magnesium alloy sheet is carried out
Local temperature is high or low and template is produced and had a strong impact on.
At present, magnesium alloy roller temperature is automatically controlled stage by stage to turn into and improves magnesium alloy sheet quality with improving
The very urgent task of magnesium alloy production efficiency.
The content of the invention
For solve it is above-mentioned in the prior art the defects of, the invention provides a kind of practical, efficient magnesium alloy strip rolling
During working roll temperature control equipment, the system can during accurate, sensitive controlled rolling roll temperature, it is easy to control
Fast.
The purpose of the present invention is achieved through the following technical solutions：
Working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling, including temperature elevation system, cooling system, temperature
Detecting system, the temperature elevation system include fuel gas source, and fuel gas source connects through valve with the first main line, and the first main line is for upper and lower
Double-working is divided into two tie points, and tie point is divided into multiple branches for the axially different position of roll respectively, branch
Quantity determines according to roll footage and roll partial temperature control precision；Flowmeter and stream are equipped with each branch of tie point
Amount controller；Cooling system includes liquid oil sources, and cooling oil sources connects through main valve with the second main line, the second main line be directed to it is upper,
Lower double-working is divided into two second branch roads；Second branch road is divided into multiple branches for the axially different position of roll respectively, second
Each branch on road is corresponded with the branch of the second branch road in roll axial location, and flow is equipped with each branch of the second branch road
Meter and flow controller, are equipped with flow regulator and flow monitor in tie point, the second branch road, system for detecting temperature by
Infrared inductor in roll side is formed, each flow regulator, flow monitor, flowmeter, infrared temperature induction installation
It is connected with a PLC.
Preferably, the flowmeter is connected with the input terminal of PLC, flow controller and PLC
Lead-out terminal is connected, the PLC adoption rate-Integrated Derivative PID formula control modes, carries screen display, each
The flow of road branch is shown on the screen display；The control model of PLC is divided into automatic mode and manual mode,
Automatic control mode is enabled after generally setting temperature, is opened when template goes wrong and needs timely regulating gas amount
Dynamic manual mode is controlled manually by observing flowmeter registration.
Preferably, master switch, convenient maintenance and regulation and control, the master switch are set respectively on first main line and the second main line
For electromagnetic switch, and it is connected with PLC, can easily realizes the overall control of heating and cooling.
Preferably, the tie point, the second branch road and infrared inductor are multiple rows of parallel construction, and left and right is respectively arranged
Branch road is corresponding in roll axial location with infrared inductor, and each arrange is equipped with flow monitoring device and Flow-rate adjustment in branch
Device, it can so apply different temperature control strategies to the axially different position of roll.
Preferably, the tie point front end is provided with arc-shaped baffle plate close at roll, plays safety and prevents radiating
Effect.
Preferably, the branch road front end is also provided with arc-shaped baffle plate close at roll, prevents fluid from flashing.
Preferably, the infrared inductor is made up of a series of infrared inductors axially distributed along roll respectively, respectively
Infrared inductor is identical in the position of axial direction with each branch road branch of temperature elevation system, cooling system in the position of axial direction.
Preferably, each infrared inductor connects with the input terminal of PLC, and shows in the screen of PLC
Show the temperature for showing the axially different opening position of top and bottom rolls on device respectively.
Compared with prior art, the invention has the advantages that：
1) climate control issues of roll in the magnesium alloy plate operation of rolling are solved, accurately control roller temperature, are carried
The high production efficiency of magnesium alloy；
2) using along roll axial direction branch temperature control strategy, conveniently roller temperature burst is controlled, is thermally sensitive magnesium
The rolling of the thin volume of alloy provides good plate form control strategy；
3) being cooled down and lubricated using ROLLING OIL causes magnesium alloy and roller surface quality to be improved significantly；
4) PLC automatic temperature control systems are used, efficiently, easily temperature is controlled by, while manual mode can may be selected
Adjust temperature.
Brief description of the drawings
Fig. 1 is roller temperature control device front view.
Fig. 2 is top working roll temperature control equipment figure.
Fig. 3 is bottom working roll temperature control equipment figure.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
The embodiments of the invention provide working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling, it is divided into heating
System, cooling system, system for detecting temperature three parts, the temperature elevation system be Fig. 1 in frame 22 left part, fuel gas source 1
Connect through valve 25 with the first main line 2, the first main line 2 is divided for tie point 4 and 5 for top working roll 23, bottom working roll 9；Such as
Fig. 2, shown in 3, the tie point 4 and 5 again respectively for the axially different position of roll be divided into multiple branch 4-1,4-2,4-3,
4-4 and 4-5, the quantity of branch determine according to roll footage and roll partial temperature control precision；Multiple branch 4-1,4- simultaneously
2nd, be equipped with 4-3,4-4 and 4-5 flowmeter 3-1,3-2,3-3,3-4 and 3-5 and flow controller 24-1,24-2,24-3,
24-4 and 24-5, tie point 4,5 are provided with first flow adjuster 24 and 7, first flow monitor 2 and 6, first flow prison
Survey device, flowmeter are connected with PLC input terminal, and first flow adjuster, flow controller are connected with PLC lead-out terminal
Connect, the PLC temperature controllers carry screen display, and the flow indication of each branch road and branch is on PLC displays；PLC is controlled
The control model of device is divided into automatic mode and manual mode, and automatic control mode is enabled after generally setting temperature, when
Template goes wrong and needs startup manual mode during timely regulating gas amount to be controlled manually by observing flowmeter registration.
The cooling system is the right part of frame 22 in Fig. 1, and cooling oil sources 19 is through main valve 18 and the phase of the second main line 17
Connect, the second main line 17 is equally divided into the second branch road 15 and 14 for upper and lower double-working；The He of second branch road 15 as shown in Figure 2,3
14 are divided into multiple branch 15-1,15-2,15-3,15-4 and 15-5 for the axially different position of roll respectively again, noticeable
It is that each branch of the second branch road 15 and 14 corresponds with the branch of tie point 4 and 5 in roll axial location, same second
Be equipped with each branch on road 15 and 14 flowmeter 16-1,16-2,16-3,16-4 and 16-5 and flow controller 20-1,20-2,
20-3,20-4 and 20-5, the second branch road 15 and 14 are provided with second flow adjuster 20 and 11, the and of second flow monitor 16
12, second flow monitor, flowmeter are connected with PLC input terminal, second flow adjuster, flow controller and PLC
Lead-out terminal be connected, the flow indication of each branch road branch is on PLC displays；The automatic of PLC can equally be passed through
Pattern and manual mode control the cooling system of roll.
Master switch 25 and 18 is set respectively on the main line 17 of first main line 2 and second, and convenient maintenance and regulation and control, this is always opened
Close as electromagnetic switch, and be connected with PLC 13, can easily realize the overall control of heating and cooling.
The tie point 4,5 front ends are provided with arc-shaped baffle plate 8 close at roll, play safety and prevent the work of radiating
With.The branch road 14,15 front ends are also provided with arc-shaped baffle plate 8 close at roll, prevent fluid from flashing.
Described system for detecting temperature is entered to upper and lower roller temperature respectively by the infrared inductor 21 and 10 of roll side
Row detection, infrared inductor 21 and 10 is respectively by a series of infrared inductor 21-1,21-2,21- axially distributed along roll
3rd, 21-4 and 21-5 compositions, similarly each infrared inductor is in the position of axial direction and each branch road branch of temperature elevation system, cooling system
It is identical in the position of axial direction.Each inductor of infrared inductor connects with PLC input terminal, and divides on PLC displays
The temperature of the axially different opening position of top and bottom rolls is not shown.Thus by feedback roller temperature come adjust position heating amount or
Amount of cooling water realizes the closed-loop control of roller temperature, and its control strategy can use on-off switch to control, but its control accuracy is inclined
It is low, therefore high-precision proportional-integral-differential PID control strategy need to be used, each link coefficient is adjusted using preceding, led to
Cross three link comprehensive functions, control heating and cooling flow valve openings of sizes.To the axially different position of roll in the operation of rolling
Temperature is controlled respectively when setting different rollings, and this point is the emphasis for being different from other mode of heatings；The other temperature control
System processed is provided with manual mode and easily can controlled manually so that operation is more flexibly, conveniently, in real time.
The cooling system of this specific implementation is cooled down using ROLLING OIL, and ROLLING OIL can take away the deformation heat and frictional heat of metal,
Roller surface temperature is adjusted, controls template；ROLLING OIL can reduce the friction between roll and magnesium volume simultaneously, there is provided stable friction
Interface, glutinous roller is prevented and treated, so as to realize stable rolling, improve surface quality；Present invention ROLLING OIL should have good cooling
Can, the stability under greasy property and high-temperature high-pressure state, it is small to occur obvious rotten and volatile quantity during rolling,
It is nontoxic harmless.
This specific implementation by following steps in use, completed：
The first step, set in PLC rolling temperature on each section of roll, and comparative example, differential, integration respectively
Adjusted etc. each link coefficient.
Second step, each cadre's valve is opened, click on start button and start to heat roll, made by screwdown gear
Bottom working roll is in contact and opening milling train rotates working roll, can so working roll is uniformly heated, and plays heating support roller
Effect；
3rd step, when roller temperature reach it is suitable roll temperature when, magnesium alloy board to be rolled will be heated be sent into milling train and start to roll,
Temperature is corresponding when paying attention to setting drafts now and mill speed with suitably rolling；
Treat that each position radiating of roll is different in 4th step, the operation of rolling, while roller temperature is by the change of pressure amount, mill speed etc.
Aspect is influenceed and fluctuates larger, and now PLC is controlled according to temperature deviation by PID control strategy to temperature；
5th step, when there is larger template problem, heated branch or cooling are directly controlled using MANUAL CONTROL mode
The flow of branch needs operating personnel to have enough operating experiences to adjust template, can equally make when roll banding problem should occur together
ROLLING OIL is sprayed with manual mode, improves magnesium volume surface quality；
The valve on combustion gas main line and ROLLING OIL main line is closed in 6th step, rolling after terminating, be then turned off PLC temperature controls
Device, finally milling train is operated by defined flow.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (8)
- A kind of 1. working roll temperature control equipment in magnesium alloy strip operation of rolling, it is characterised in that：Including temperature elevation system, cooling System, system for detecting temperature, the temperature elevation system include fuel gas source (1), and fuel gas source (1) is through valve (25) and the first main line (2) Connect, the first main line (2) are divided into two tie points (4,5) for upper and lower double-working, and tie point (4,5) is directed to respectively The axially different position of roll is divided into multiple branches, and the quantity of branch is true according to roll footage and roll partial temperature control precision It is fixed；Flowmeter and flow controller are equipped with each branch of tie point (4,5)；Cooling system includes liquid oil sources (19), Cooling oil sources (19) connects through main valve (18) with the second main line (17), and the second main line (17) are divided into for upper and lower double-working Two second branch roads (15,14)；Second branch road (15,14) is divided into multiple branches for the axially different position of roll respectively, second Each branch on road (15,14) corresponds with the branch of the second branch road (15,14) in roll axial location, the second branch road (15, 14) flowmeter and flow controller are equipped with each branch, tie point (4,5), the second branch road are equipped with stream on (14,15) Amount adjuster and flow monitor, system for detecting temperature are made up of the infrared inductor (21,10) in roll side, each flow Adjuster, flow monitor, flowmeter, infrared temperature induction installation are connected with a PLC (13).
- 2. working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling as claimed in claim 1, it is characterised in that： The flowmeter is connected with the input terminal of PLC (13), flow controller and the lead-out terminal of PLC (13) It is connected, PLC (13) adoption rate-Integrated Derivative (PID) the formula control mode, carries screen display, each branch road The flow of branch is shown on the screen display.
- 3. working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling as claimed in claim 1, it is characterised in that： Master switch is set respectively on first main line (2) and the second main line (17), and convenient maintenance and regulation and control, the master switch is electromagnetic type Switch, and be connected with PLC (13), it can easily realize the overall control of heating and cooling.
- 4. working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling as claimed in claim 1, it is characterised in that： The tie point (4,5), the second branch road (14,15) and infrared inductor (10,21) are multiple rows of parallel construction, and left and right Each row's branch road is corresponding in roll axial location with infrared inductor, and each arrange is equipped with flow monitoring device and flow in branch Adjuster.
- 5. working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling as claimed in claim 1, it is characterised in that： Tie point (the 4,5) front end is provided with arc-shaped baffle plate close at roll.
- 6. working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling as claimed in claim 1, it is characterised in that： Branch road (the 14,15) front end is also provided with arc-shaped baffle plate close at roll.
- 7. working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling as claimed in claim 1, it is characterised in that： The infrared inductor (21,10) is made up of a series of infrared inductors axially distributed along roll respectively, each infrared induction Device is identical in the position of axial direction with each branch road branch of temperature elevation system, cooling system in the position of axial direction.
- 8. working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling as claimed in claim 7, it is characterised in that： Each infrared inductor connects with the input terminal of PLC, and is shown respectively on the screen display of PLC The temperature of the axially different opening position of bottom roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667465.6A CN107470374A (en) | 2017-08-07 | 2017-08-07 | Working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667465.6A CN107470374A (en) | 2017-08-07 | 2017-08-07 | Working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107470374A true CN107470374A (en) | 2017-12-15 |
Family
ID=60598755
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710667465.6A Pending CN107470374A (en) | 2017-08-07 | 2017-08-07 | Working roll temperature control equipment in a kind of magnesium alloy strip operation of rolling |
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| Country | Link |
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| CN (1) | CN107470374A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109127728A (en) * | 2018-03-07 | 2019-01-04 | 上海大趋金属科技有限公司 | A kind of method hot rolling device |
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-
2017
- 2017-08-07 CN CN201710667465.6A patent/CN107470374A/en active Pending
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| Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109127728A (en) * | 2018-03-07 | 2019-01-04 | 上海大趋金属科技有限公司 | A kind of method hot rolling device |
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Application publication date: 20171215 |