CN108145104B - A kind of constant pressure system band method of automatic control - Google Patents
A kind of constant pressure system band method of automatic control Download PDFInfo
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- CN108145104B CN108145104B CN201711382606.6A CN201711382606A CN108145104B CN 108145104 B CN108145104 B CN 108145104B CN 201711382606 A CN201711382606 A CN 201711382606A CN 108145104 B CN108145104 B CN 108145104B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention discloses a kind of constant pressure system band method of automatic control.This method contains aluminium alloy using closed nozzle packet, and aluminium alloy is ejected into formation solid alloy band in atwirl cooling roller surface via the nozzle under nozzle packet, inert gas is passed through into nozzle packet during spray band, using inert gas atmospheric pressure compensating band when aluminium alloy liquid level decline caused by hydraulic decline, compensation atmospheric pressure value calculate and control in real time, automatically according to compensation barometric fluctuation equation by central control board according to spray band technological parameter, and the pressure for keeping system to spray with whole aluminium alloy from nozzle is constant.Central control board also realizes real-time, the automatic control to system with technological parameters such as whole aluminium alloy temperature, chill roll revolving speeds, and according to air pressure and chill roll revolving speed is compensated in the band actual (real) thickness adjust automatically nozzle packet of thickness measurement online instrument Real-time Feedback, the stabilization of thickness of strip is realized.
Description
Technical field
The present invention relates to the preparation methods of thin ribbon shaped alloy material more particularly to a kind of constant pressure amorphous of automatic control to close
The preparation method of gold ribbon material, nanometer crystal alloy band and sub-nanometer alloy strip steel rolled stock.
Background technique
Amorphous, nano-crystal soft magnetic alloy are due to saturation induction density with higher, ultra-low loss and high magnetic permeability etc.
Excellent soft magnet performance and energy conservation characteristic, in recent years in energy-economic transformer, high efficiency motor, high-end reactor, high-end mutual inductor, height
It is widely applied in the electric power such as end inductance, inverter, sensor, Switching Power Supply, electronic device.With the hair of science and technology
Exhibition, requirement of all kinds of power electronic devices to wherein soft magnetic materials is also higher and higher, to the quality of amorphous, nanometer crystal alloy band
Stability and the consistency of thickness, width equidimension specification are also put forward higher requirements.
Amorphous, the general production technology of nanometer crystal alloy band are as follows: (1) using vacuum or antivacuum induction melting furnace by change
Study distribution ratio smelting nut alloy；(2) the sensed smelting furnace of master alloy heats remelting again, is poured into the nozzle packet of pocket builder,
It is ejected into atwirl cooling roller surface through the nozzle that nozzle is wrapped under stress, is prepared into thickness in 40 μm of bands below
Material.Under above-mentioned process for producing frame, at present there are many amorphous, the specific preparation method of nanometer crystal alloy band and devices
Type and form, as patent CN201120462452.3, CN201210410276.8, CN201320518791.8,
Designed by CN200520133375.1 etc. with the tape producing apparatus of statement.But current amorphous, nanocrystalline strip preparation method and dress
It sets in the presence of following insufficient:
(1) the spray band pressure of most of tape producing apparatus is generated by aluminium alloy self weight in nozzle packet, and generated pressure is smaller,
Gu Penzuizui seam is wider, and the band that spray goes out is thicker, toughness is poor, is unsuitable for high-frequency element application；It is steady to maintain to spray band pressure
It is fixed, it needs constantly to inject aluminium alloy into nozzle packet, substantially system band member's manual control, human factor are affected；Spray band most
Stage afterwards, when alloy-free liquid supplements, spray band pressure sharp fall, cause strip quality with stablize the gap of preparatory phase compared with
Greatly, it can only substantially melt down again, cause energy waste.
(2) a small number of tape producing apparatus use closed nozzle packet, decline caused pressure using inert gas atmospheric pressure compensating liquid level
Power decline, but atmospheric pressure compensating is substantially carried out by experience of the system with member manually, stage by stage, also without final monitoring of the spray with pressure
Or measurement, human factor are affected, it cannot be guaranteed that the whole spray band pressure of system band is constant.
Summary of the invention
Problem to be solved by this invention is, for above-mentioned existing system with the deficiency in method and apparatus, to propose one kind certainly
The constant pressure system band method of dynamic control realizes that system band is whole and sprays band by real-time, the automatic control of computer in central control board
Pressure is constant, and realizes real-time, the auto-control to technological parameters such as aluminium alloy temperature, chill roll revolving speeds, reduces human factor
It influences and the wastes such as material, the energy, raising strip quality and stability.
To solve the above problems, the scheme that the present invention uses is as follows: containing aluminium alloy using closed nozzle packet and spray
Band, the spray band hydraulic decline caused by the decline of aluminium alloy liquid level in the process, by the side for being filled with inert gas into nozzle packet
Formula compensates；Using the computer in central control board, according to spraying, band technological parameter is real-time, calculate automatically and controls compensation gas
Pressure value is constant with the pressure for guaranteeing that aluminium alloy is sprayed from nozzle.The aluminium alloy volume sprayed in the unit time when due to spray band
Are as follows: α dWs, wherein α is the density ratio of alloy strip steel rolled stock and aluminium alloy, and d is the preset thickness (unit: mm) of alloy strip steel rolled stock, and W is
The predetermined width (unit: mm) of alloy strip steel rolled stock, s are tape speed (unit: m/s).Aluminium alloy liquid level fall off rate are as follows: α dWs/
(A-πr2), wherein A is nozzle packet lumenal cross-section product (unit: mm2), r is stopper rod radius (unit: mm) in nozzle packet.Thus
Show that spray band compensates the changing rule of air pressure in the process are as follows: p (t)=p0+ρgdWst/(A-πr2), wherein p (t) is t moment spray
Compensation atmospheric pressure value (unit: kPa) in mouth packet, p0For it is preset spray in initial time nozzle packet compensation atmospheric pressure value (unit:
KPa), t is time (unit: s, spray band start when t=0), and ρ is the density (unit: g/cm of alloy strip steel rolled stock3), g is gravity acceleration
Spend (9.8m/s2)。
The constant pressure system band method of the automatic control of the application, contains aluminium alloy using closed nozzle packet, and lead to
It crosses and is filled with inert gas into nozzle packet come hydraulic decline caused by aluminium alloy liquid level decline when compensating spray band, to guarantee to spray
The pressure of the nozzle injection aluminium alloy of mouth packet bottom is constant.The nozzle packet of the application is closed, and which is provided with air inlet,
Air inlet is equipped with gas mass flow controller, and the compensation air pressure in nozzle packet is adjusted by gas mass flow controller
Value.
As the creation point of the application, i.e., how to determine the compensation atmospheric pressure value in nozzle packet, the application devises one thus
Set is for calculating the equation of compensation atmospheric pressure value, p (t)=p0+ρgdWst/(A-πr2), wherein p (t) is in t moment nozzle packet
It compensates atmospheric pressure value (unit: kPa), p0It is preset spray with the compensation atmospheric pressure value (unit: kPa) in initial time nozzle packet, t is
Time (unit: s, spray band start when t=0), ρ is the density (unit: g/cm of alloy strip steel rolled stock3), g is acceleration of gravity (9.8m/
s2), d is the preset thickness (unit: mm) of alloy strip steel rolled stock, and W is the predetermined width (unit: mm) of alloy strip steel rolled stock, and s is tape speed
(unit: m/s).Can accurately be calculated by above-mentioned equation, spray with during any moment, because of aluminium alloy liquid level
Decline and compensate air pressure required for bring pressure reduction, entrance is then adjusted by regulating gas mass flow controller again
Gas flow in nozzle packet, completes the compensation air pressure adjustment in nozzle packet, and the final pressure for guaranteeing that aluminium alloy sprays is invariable.
Further, according to above scheme, the present invention provides a kind of constant pressure system band method of automatic control, and feature exists
In including the following steps:
Step 1: predetermined width, preset thickness and the density of prepared alloy strip steel rolled stock, setting are set in central control board
It sprays with initial compensation atmospheric pressure value, go out during tape speed, nozzle packet lumenal cross-section product, the stopper rod radius in nozzle packet, spray band
The spray band technological parameter such as aluminium alloy holding temperature, thickness of strip deviation of permission；
Step 2: nozzle packet inner cavity is preheating to aluminium alloy holding temperature；
Step 3: melted aluminium alloy is poured into nozzle packet, adjusts the spacing between nozzle and chill roll, sealing
Nozzle packet；
Step 4: being filled with inert gas into nozzle packet, and initial compensation air pressure in nozzle packet is promoted to setting value, is lifted
Stopper rod starts to spray band；
Step 5: central control board calculates and controls compensation air pressure change in real time, automatically according to the barometric fluctuation equation,
Real-time thickness measurement is carried out to prepared alloy strip steel rolled stock.
Further, according to above scheme, the present invention provides a kind of constant pressure system band method of automatic control, and feature exists
In actual measurement compensation atmospheric pressure value is compared with calculating and compensating atmospheric pressure value according in synchronization nozzle packet for central control board, certainly
The valve of gas mass flow controller, regulates and controls air inflow on dynamic control air inlet, realizes actual measurement compensation atmospheric pressure value and meter
Compensation atmospheric pressure value is calculated to be consistent；Actual measurement compensation atmospheric pressure value is by baroceptor real-time measurement and is automatically fed to
Entreat console.
Further, according to above scheme, the present invention provides a kind of constant pressure system band method of automatic control, and feature exists
In real using thickness measurement online instrument of the spray with vertical direction is arranged in the real-time thickness measurement of alloy strip steel rolled stock in the step 5
When, be automatically performed.
Further, according to above scheme, the present invention provides a kind of constant pressure system band method of automatic control, and feature exists
In alloy strip steel rolled stock actual (real) thickness being measured in step 5, and Real-time Feedback returns central control board, when actual (real) thickness deviates preset thickness
When X%, by central control board adjust automatically initial compensation atmospheric pressure value p0, according to new barometric fluctuation equation (i.e. p0Gas after variation
Buckling moves equation, barometric fluctuation equation also referred to as adjusted) regulation nozzle packet in compensate air pressure, until band actual (real) thickness with
The deviation of preset thickness is less than X%, and wherein X is setting value, value range 1-50.
Further, according to above scheme, the present invention provides a kind of constant pressure system band method of automatic control, and feature exists
In alloy strip steel rolled stock actual (real) thickness being measured in step 5, and Real-time Feedback returns central control board, when actual (real) thickness deviates preset thickness
When X%, by central control board auto-control chill roll revolving speed, until the deviation of band actual (real) thickness and preset thickness is less than X%,
Wherein X is setting value, value range 1-50.
Further, according to above scheme, the present invention provides a kind of constant pressure system band method of automatic control, and feature exists
In thickness measurement online instrument two sides are equipped with support roller；The support roller is used to keep the level and stabilization of alloy strip steel rolled stock, to ensure
The accuracy of institute's Thickness Measurement by Microwave.
Further, according to above scheme, the present invention provides a kind of constant pressure system band method of automatic control, and feature exists
In, since step 3 in central control board real-time monitoring nozzle packet aluminium alloy actual temperature, pass through the heat preservation temperature with setting
The comparison of degree, auto-control elema heater keep the actual temperature of aluminium alloy consistent with set temperature；The actual temperature
By thermocouple real-time measurement and it is automatically fed to central control board.
Further, according to above scheme, the present invention provides a kind of constant pressure system band method of automatic control, and feature exists
In the system can be used for all using the thin ribbon shaped material for rotating cooling roller mode preparation with method.
The constant pressure system of the automatic control of the application contains aluminium alloy using closed nozzle packet with method and carries out spray band,
Into nozzle packet be passed through inert gas during spray band, using inert gas atmospheric pressure compensating band when aluminium alloy liquid level decline institute
Caused by hydraulic decline, compensation atmospheric pressure value by central control board according to spray band technological parameter according to compensation barometric fluctuation equation carry out
In real time, it calculates and controls automatically, the pressure for keeping system to spray with whole aluminium alloy from nozzle is constant.Central control board is also realized pair
Real-time, automatic control with technological parameters such as whole aluminium alloy temperature, chill roll revolving speeds are made, and real-time according to thickness measurement online instrument
Compensation air pressure and chill roll revolving speed, realize the stabilization of thickness of strip in the band actual (real) thickness adjust automatically nozzle packet of feedback.This
Invention realizes automatic control and adjustment of the system with process key technological parameter using central control board, greatly reduces production process
The influence of middle human factor improves strip quality stability and production efficiency.
Detailed description of the invention
Fig. 1 is that the constant pressure system of automatic control according to the present invention is shown with constant pressure tape producing apparatus structure designed by method
It is intended to.
Attached drawing mark: 1 be central control board, 2 be nozzle packet, 3 be nozzle cups, 4 be nozzle, 5 be chill roll, 6 be pressure roller,
7 be support roller, 8 be thickness measurement online instrument, 9 be nozzle packet backpack cover, 10 be stopper rod, 11 be under nozzle packet packet, 12 be heating Elema,
13 it is elema heater, 14 be gas mass flow controller, 15 is air inlet, 16 to pour steel mouth sealing cover, 17 be thermoelectricity
It is even, 18 be stopper rod moving system, 19 be baroceptor.
Specific embodiment
The present invention is described in further details with specific embodiment with reference to the accompanying drawing.
Fig. 1 is a kind of schematic diagram of specific embodiment of the invention.The tape producing apparatus by central control board 1, nozzle packet 2,
Nozzle cups 3, nozzle 4, chill roll 5, pressure roller 6, support roller 7, thickness measurement online instrument 8 etc. form, and the relative position between each component is closed
System is as shown in Figure 1.For simplicity, the steelframes of components such as nozzle packet 2, pressure roller 6, support roller 7, thickness measurement online instrument 8 are supported and are moved
Make mechanism and the online spooler of subsequent band is not drawn in figure.
Nozzle packet 2 is by wrapping 11, heating Elema 12, elema heater 13, gas matter under backpack cover 9, stopper rod 10, nozzle packet
Measure flow controller 14, air inlet 15, pour steel mouth sealing cover 16, thermocouple 17, stopper rod moving system 18, baroceptor 19 etc.
Composition, bottom are equipped with the mouth of a river, are alloy fluid outlet.
When stopper rod 10 compresses downwards the nozzle packet bottom mouth of a river, the mouth of a river seals aluminium alloy outflow in packet；Stopper rod 10 is lifted up
Aluminium alloy can be flowed out from the mouth of a river when leaving the mouth of a river, be ejected into atwirl chill roll 5 through nozzle cups 3 and nozzle 4 under stress
Surface forms thin ribbon shaped alloy material.
Pressure roller 6 guarantees that band still has sufficiently long time contact chill roll after being batched by subsequent spooler
5, to ensure cooling effect, and play the role of secondary cooling.Two support rollers 7 guarantee that band is rolled up by subsequent spooler
High-speed smooth transmission is realized after taking, and to ensure the measurement data accuracy of thickness measurement online instrument 8, and plays work cooling again
With.
As shown in fig. 1, solid arrow indicates each control signal exported from central control board 1, dotted arrow table in figure
Show the measurement data signals that central control board 1 is input to from each measuring mechanism, inert gas used is argon gas.
The specific work steps of this tape producing apparatus is as follows:
A) band predetermined width, band preset thickness are set, goes out tape speed, initial compensation atmospheric pressure value, nozzle packet inner cavity cross
The spray band technological parameter such as sectional area, stopper rod radius, aluminium alloy holding temperature, alloy strip steel rolled stock density, sets the thickness of strip of permission
Deviation X% (X:1-50), the central control board movement after setting thickness of strip deviation is (" adjust automatically compensation air pressure " or " certainly
Dynamic regulation chill roll revolving speed ").
B) it opens on nozzle packet backpack cover 9 and pours steel mouth sealing cover 16, stopper rod 10 is controlled by central control board 1 and is compressed downwards
Nozzle water-coating port, gas mass flow controller 14 close valve, elema heater 13 drives Elema 12 by nozzle packet 2
Inner cavity is preheating to aluminium alloy holding temperature.
C) melted master alloy liquid is poured into nozzle packet 2 from steel mouth is poured, is adjusted between nozzle 4 and chill roll 5
Spacing, closing pour steel mouth sealing cover 16.
D) chill roll 5, pressure roller 6, support roller 7 and thickness measurement online instrument 8 are started by central control board 1, opens gaseous mass
The valve of flow controller 14 promotes initial compensation air pressure in nozzle packet 2 to setting value.
E) it presses stopper rod and promotes button, start to spray band, central control board 1 is real-time, automatic according to compensation barometric fluctuation equation
Compensation air pressure change is calculated and controlled, real-time thickness measurement is carried out to prepared alloy strip steel rolled stock.
F) after spraying the end of tape, stopper rod 10 is depressed, closes the valve of gas mass flow controller 14, opening pours the sealing of steel mouth
Lid 16 repeats above-mentioned a)-e) step.
During above-mentioned spray band, when band actual (real) thickness, which deviates preset thickness, reaches X%, central control board 1 will be automatic
Adjustment spray band technological parameter (compensation air pressure or chill roll revolving speed), until the deviation of thickness of strip and preset thickness is less than X%.
Above-described embodiment has carried out system detailed description to technical solution of the present invention, it should be understood that above-described embodiment is only
For specific embodiments of the present invention, it is not intended to restrict the invention.All any modifications made in spirit of the present invention, benefit
It fills or equivalent replacement etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of constant pressure system band method of automatic control, which is characterized in that contain aluminium alloy using closed nozzle packet, and will
Aluminium alloy is ejected into formation solid alloy band in atwirl cooling roller surface, spray band process via the nozzle under nozzle packet
It is middle to be passed through inert gas into nozzle packet, using inert gas atmospheric pressure compensating band when aluminium alloy liquid level decline caused by liquid
Drops, the changing rule for compensating air pressure meet barometric fluctuation equation: p (t)=p0+ρgdWst/(A-πr2), wherein
P (t) is the compensation atmospheric pressure value in t moment nozzle packet, unit: kPa；
p0For spray band initial compensation atmospheric pressure value, unit: kPa；
T is the time, t=0 when spray band starts, unit: s；
ρ is the density of alloy strip steel rolled stock, unit: g/cm3；
G is acceleration of gravity: 9.8m/s2；
D is the preset thickness of alloy strip steel rolled stock, unit: mm；
W is the predetermined width of alloy strip steel rolled stock, unit: mm；
S is tape speed, unit: m/s；
A is nozzle packet lumenal cross-section product, unit: mm2；
R is stopper rod radius in nozzle packet, unit: mm.
2. the constant pressure system band method automatically controlled according to claim 1, which comprises the steps of:
Step 1: predetermined width, preset thickness and the density of prepared alloy strip steel rolled stock, setting spray band are set in central control board
Initial compensation atmospheric pressure value goes out alloy during tape speed, nozzle packet lumenal cross-section product, the stopper rod radius in nozzle packet, spray band
Liquid holding temperature, the thickness of strip deviation of permission；
Step 2: nozzle packet inner cavity is preheating to aluminium alloy holding temperature；
Step 3: melted aluminium alloy is poured into nozzle packet, adjusts the spacing between nozzle and chill roll, seals nozzle
Packet；
Step 4: being filled with inert gas into nozzle packet, and initial compensation air pressure in nozzle packet is promoted to setting value, plug is lifted
Bar starts to spray band；
Step 5: central control board calculates and controls compensation air pressure change in real time, automatically according to the barometric fluctuation equation, to institute
The alloy strip steel rolled stock of preparation carries out real-time thickness measurement.
3. the constant pressure system band method automatically controlled according to claim 1, which is characterized in that central control board is according to same
Actual measurement compensation atmospheric pressure value automatically controls gaseous mass on air inlet compared with calculating and compensating atmospheric pressure value in moment nozzle packet
The valve of flow controller regulates and controls air inflow, realizes that actual measurement compensation atmospheric pressure value is consistent with compensation atmospheric pressure value is calculated；Institute
Actual measurement compensation atmospheric pressure value is stated by baroceptor real-time measurement and is automatically fed to central control board.
4. the constant pressure system band method automatically controlled according to claim 2, which is characterized in that alloy in the step 5
The real-time thickness measurement of band is automatically performed in real time using thickness measurement online instrument of the spray with vertical direction is arranged in.
5. the constant pressure system band method automatically controlled according to claim 2, which is characterized in that measure alloy strip in step 5
Material actual (real) thickness, and Real-time Feedback returns central control board, when actual (real) thickness deviates preset thickness X%, certainly by central control board
Dynamic adjustment initial compensation atmospheric pressure value p0, according to air pressure is compensated in new barometric fluctuation equation regulation nozzle packet, until band is practical
The deviation of thickness and preset thickness is less than X%, and wherein X is setting value, value range 1-50.
6. the constant pressure system band method automatically controlled according to claim 2, which is characterized in that measure alloy strip in step 5
Material actual (real) thickness, and Real-time Feedback returns central control board, when actual (real) thickness deviates preset thickness X%, certainly by central control board
Dynamic regulation chill roll revolving speed, until the deviation of band actual (real) thickness and preset thickness is less than X%, wherein X is setting value, value
Range is 1-50.
7. the constant pressure system band method automatically controlled according to claim 4, which is characterized in that thickness measurement online instrument two sides
Equipped with support roller；The support roller is used to keep the level and stabilization of alloy strip steel rolled stock, the accuracy of Thickness Measurement by Microwave to ensure.
8. the constant pressure system band method automatically controlled according to claim 2, which is characterized in that the central control since step 3
The actual temperature of aluminium alloy in platform real-time monitoring nozzle packet processed, by compared with the holding temperature of setting, auto-control silicon-carbon
Stick heater keeps the actual temperature of aluminium alloy consistent with set temperature；The actual temperature by thermocouple real-time measurement and from
Dynamic feedback arrives central control board.
9. the constant pressure system band method of -8 any automatic controls according to claim 1, which is characterized in that the system band method
It can be used for all using the thin ribbon shaped material for rotating cooling roller mode preparation.
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| CN109290535B (en) * | 2018-09-18 | 2020-09-01 | 洛阳中赫非晶科技有限公司 | Amorphous strip continuous production equipment |
| CN109390146A (en) * | 2018-11-13 | 2019-02-26 | 中磁电科有限公司 | A kind of working method of transformer core system of processing |
| CN109775405B (en) * | 2019-02-18 | 2020-06-09 | 平顶山神马帘子布发展有限公司 | Method for correcting pressure of double-roller friction type passive winding device for winding impregnated cord fabric |
| CN110125353A (en) * | 2019-05-17 | 2019-08-16 | 山东电亮亮信息科技有限公司 | Large capacity nano-crystalline thin ribbon production system |
| CN112170857B (en) * | 2020-09-30 | 2023-07-07 | 宁波中科毕普拉斯新材料科技有限公司 | Preparation method of fine alloy powder |
| CN113084202B (en) * | 2021-03-18 | 2022-05-20 | 西安交通大学 | Melt flow control device and method for melt coating forming process |
| CN115041646B (en) * | 2022-06-30 | 2023-08-18 | 宁波中科毕普拉斯新材料科技有限公司 | Constant-pressure thin belt preparation method |
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