CN106111922B - A kind of copper-coated aluminium composite material high efficiency continuous casting former and technique - Google Patents
A kind of copper-coated aluminium composite material high efficiency continuous casting former and technique Download PDFInfo
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- CN106111922B CN106111922B CN201610496178.9A CN201610496178A CN106111922B CN 106111922 B CN106111922 B CN 106111922B CN 201610496178 A CN201610496178 A CN 201610496178A CN 106111922 B CN106111922 B CN 106111922B
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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
- B22D11/008—Continuous casting of metals, i.e. casting in indefinite lengths of clad ingots, i.e. the molten metal being cast against a continuous strip forming part of the cast product
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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
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
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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
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
Abstract
The present invention provides a kind of copper-coated aluminium composite material high efficiency continuous casting former and technique, which is mainly made of copper melting furnace and holding furnace, aluminium melting furnace, aluminium chute, aluminium insulated bag, composite die, complex heat-preservation stove, crystallizer, the first secondary cooling apparatus, second secondary cooling device, draft gear, saw cutting device, temperature measuring equipment and integrated control system etc..Its feature is：By the way that multiple composite casting systems are arranged in a copper fusing and holding furnace, using Multi-strand Continuous Casting mode, to significantly improve the efficiency of composite continuous casting；By the way that accurate temperature measuring equipment is arranged in crystallizer exit, temperature in casting process when Copper-Aluminum compound is monitored on-line, and it is acted on by the linkage of primary cooling system and secondary cooling system, realize the feedback control of temperature when to Copper-Aluminum compound, to realize to the stabilization of compound interface in continuous casting composite forming processes, accurately control, be conducive to the quality for improving continuous casting compound bar billet.
Description
Technical field
The invention belongs to continuous casting technology fields, in particular, provide a kind of copper-coated aluminium composite material multithread high efficiency continuous casting forming
Equipment and technology is suitable for continuous casting forming of the clad melting point metal higher than the composite material of core material melting point metal.
Background technology
Copper-coated aluminium composite material is a kind of novel lamellar composite material developed in recent years, is a kind of high performance multiple
Close conductor.It is made of aluminium core and copper-clad coating, and the electric conductivity for having copper concurrently is excellent, corrosion resistance and good and aluminium cost
It the advantages that low, light-weight, is mainly reflected in：Weight ratio copper conductor is light；Conductivity Ratio aluminium conductor is high, and is used as certain specific uses
Conductor, such as high frequency lead and the busbar for being used for transmission high current, due to its Kelvin effect, electric conductivity is close with fine copper
It is even almost identical as fine copper；Tensile strength is higher than aluminium, and welding performance is close with fine copper；It can be obtained by controlling processing technology
Relatively good comprehensive mechanical property and stability.
The preparation process for having disclosed the copper-coated aluminium composite material of report is mainly the following：
First method is tube-weld cladding technique.This method is the cuprum-cladding-aluminium composite wire processing method of U.S.'s exploitation, is mesh
Production technology used by preceding most of production Coating Aluminum Weir Materials with Copper Layer producers both at home and abroad, technological process are：Aluminum core line is by aligning
After device aligning, the oxide on surface is removed with scrubbing unit, the cleaned machine of grease and oxide and scrubbing unit of copper strip surface are clear
It removes, then the two is synchronous enters the cladding area protected by inert gas.Copper strips multipair idler wheel pass effect under along longitudinal direction by
It gradually rolls to form circular tube shaped, aluminum core line is coated.Copper-clad coating longitudinal joint sequential welding is picked up with argon arc welding subsequently into welding section
Come, forms copper-clad aluminum conductor base.Multi pass drawing is carried out to line base after deburring is handled, with the copper clad aluminum of diameter needed for acquisition
Line, and improve interface fine structure by being heat-treated, assign required mechanical property.Although tube-weld cladding technique is the current country
Most ripe, most stable of copper-clad aluminium wire production method, but its main deficiency is, due to using argon arc welding copper-clad coating, weldering
Before connecing when the secondary pollution in process of aluminum core line surface and copper strip surface, the weld strength of layers of copper, welding high temperature to aluminium
Material between the cleaning of wire surface weld seam, the uniformity of weld copper layer thickness, copper aluminium layer after the influence and welding of core wire fusing
The bond strength etc. of material, inevitably affects the quality of copper-clad aluminum conductor, and especially for the preparation of ultrafine wire, it is still difficult to constitute
With the technical barrier overcome.
Second method is rolling crimping.This method is the cuprum-cladding-aluminium composite wire processing method of U.S.'s exploitation, work
Skill process is：Oxide on surface is first aligned and eliminated in rotary wire brush device to aluminum core line before copper strips cladding, then into
Enter in high frequency induction heater and heat, using ammonia as protective gas in stove, with anti-oxidation；Two copper strips are brushed away with wire brush respectively
The oxide layer on surface carries out contact heating by two contact wheels, then rises to enter in protection of ammonia stove with aluminum core line-and heat,
The oxide of copper strips and aluminum core line surface can be further eliminated in stove；Warmed-up copper strips and aluminum core line enter roll pressing machine
After be laminated together.Line base after pressing enters back into the cooling tube for being connected with ammonia, to remove the oxide on layers of copper surface, is allowed to
It is bright.Then the pressing flash through trimming device excision line base both sides, then carries out drawing processing.This method equipment investment compared with
Greatly, combination process is complicated, needs previously prepared copper strip and aluminum steel, significantly increases production cost.
The third method is hydrostatic extrusion method.The basic ideas of hydrostatic extrusion method processing cuprum-cladding-aluminium composite wire are, with big
Diameter red copper pipe and fine aluminium bar stock set dress up Compound Extrusion blank（Processing need to be sealed to head and tail portion）, squeezed through hydrostatic
Pressure once realizes the metallurgical binding between copper, aluminium at line base by the hydrostatic pressures such as big and big processing metamorphosis.Hydrostatic extrusion
Resisting medium in the extrusion cylinder of method significantly reduces the frictional force between blank and extrusion cylinder and mold, thus can substantially improve
The uniformity of metal flow.But main problem is existing for hydrostatic extrusion method：（1）The bimetallic for shaping noncircular cross section clads material
Need to be by tubing and bar that clad metal and core material metal preprocessing are size and mold precise match when material, and it will be to the two
A series of surface treatments are carried out, to ensure that compound preceding " cleaning " interface, technological process are longer（See：Hu Jie is machined and oneself
Dynamicization, 2001,9：27-28）；（2）The equipment of hydrostatic extrusion technique is complicated, equipment investment is big；（3）Hydrostatic extrusion method is difficult to reality
Existing continuous production, unproductive off time is long, low production efficiency.
Fourth method is that first molten aluminum is poured into special copper pipe to prepare the special-shaped compound strand of copper aluminium, then through rolling,
The cuprum-cladding-aluminium bus array of drawing forming rectangular cross section（See：The ingot castings of the copper-aluminum compound busbars such as Zhang Jianhua, stretch forming process and
Equipment Chinese patents：ZL200710177267.8）, this method major defect is：（1）It is needed before Copper-Aluminum compound preshaped
Special copper pipe is simultaneously surface-treated copper pipe, increases production cost and environmental pressure；（2）When molten aluminum pours into copper pipe, it is difficult to
The problem of oxidation for avoiding copper pipe inner surface causes Cu and Al combination interface quality to decline；（3）The preparation of the special-shaped compound strand of copper aluminium
Journey is non-successional, and single composite blank length is shorter, and blank truncates because the defects of loose and riser need to cut off in addition,
Production efficiency and lumber recovery are relatively low.
Fifth method is first to use horizontal casting direct combination forming technology（See：It thanks and builds a kind of new equal coating material water of
Flat continuous casting direct combination former and technique Chinese patents：ZL200610112817.3.）Copper clad aluminum composite blank is prepared, so
Prepare the copper-clad aluminum laminated busbar of rectangular cross section by techniques such as rolling, drawings again afterwards（See：It thanks and builds a kind of new equal high-performance coppers of
Alclad rectangular cross section compound conductive bus bar and its preparation process Chinese patents： ZL200810057668.4）.This method is adopted
The problem of preparing copper clad aluminum blank with horizontal casting direct combination forming process, can avoid blank preform and surface treatment, carries
High production efficiency, shortens technological process, but there is also several problems to be resolved for the method for the patent disclosure：When
Since the compound process of continuous casting is that clad metal copper pipe first solidifies, solidification and and copper pipe in the copper pipe that then molten aluminum formerly solidifies
Compound, in order to control compound degree, the speed of continuous casting cannot be too high, and generally the speed than independent copper pipe continuous casting is lower
（See that Wu Yongfu etc., rectangular cross section copper-coated aluminium composite material horizontal casting direct combination shape, China YouSe Acta Metallurgica Sinica, 2012,
22(9)：2500-2507）, the efficiency that continuous casting composite algorithm prepares copper-coated aluminium composite material is affected to a certain extent.Second is that copper-clad
The boundary layer of aluminium composite material is most important to its performance, and interfacial layer thickness and composition are the key that determine boundary layer performance.Even
Casting combined shaping belongs to that solid-liquid is compound, i.e. solid phase copper and liquid phase aluminium is compound, is easy to that violent interfacial reaction occurs, generation is to boundary
The intermetallic compound that face bond strength has an adverse effect（See that Wu Yongfu etc., continuous casting direct forming rectangular cross section copper clad aluminum are multiple
Condensation material interface and variation during the rolling process, China YouSe Acta Metallurgica Sinica, 2013,23 (1): 191-200）, therefore, need
Copper-Aluminum compound interface in casting process is accurately controlled, but existing patent does not propose to accurately control compound interface
Method.
Therefore, how to improve the production efficiency of continuous casting combined shaping, and to Copper-Aluminum compound interface in continuous casting recombination process into
Row accurately controls, and realizes the high efficiency continuous casting production of high quality copper-coated aluminium composite material, is technical barrier urgently to be resolved hurrily.
Invention content
The purpose of the present invention is being directed to the above problem existing for existing copper clad aluminum process for producing composite materials, providing one kind can
The copper-coated aluminium composite material high efficiency continuous casting production method accurately controlled is realized to compound interface, that is, Multi-strand Continuous Casting technology is used, at
Continuous casting efficiency is improved again；By being accurately controlled to aluminium core solid liquid interface in continuous casting composite forming processes and temperature field,
Accurately controlling for continuous casting compound tense interfacial reaction degree is realized, to accurately control the matter for the copper clad aluminum bar stock that continuous casting forming obtains
Amount.By above-mentioned measure, solve that copper-coated aluminium composite material continuous casting combined shaping method production efficiency is relatively low, continuous casting material compound interface
Quality is not easy the problem accurately controlled.
In order to reach object above, the technical scheme is that：
A kind of copper-coated aluminium composite material high efficiency continuous casting former improves continuous casting efficiency using Multi-strand Continuous Casting technology；
By two-stage secondary cooling system and integrated control system to aluminium core solid liquid interface in continuous casting composite forming processes and temperature field into
Row control, realizes the control of continuous casting compound tense interfacial combined function；
The system include copper melting furnace, holding furnace, heating device, aluminium insulated bag, aluminium chute, aluminium melting furnace, casting system,
Temperature measuring equipment and integrated control system；
The temperature measuring equipment includes the first temperature transducer, the second temperature transducer, third temperature transducer, the 4th thermometric
Sensor and the 5th temperature transducer and the 6th temperature transducer；
Wherein, the copper melting furnace and copper holding furnace use conjoined structure, are separated between the two by furnace wall, the furnace wall
Lower part be equipped with deflector hole, the aluminium chute is internally provided with filter device, and the aluminium chute passes through stock guide and kept the temperature with the aluminium
Packet connection, is equipped with heating device on the outside of the aluminium insulated bag, and the aluminium insulated bag bottom centre position is equipped with discharge port, it is described go out
Material mouth is connect with the first charging aperture at the top of the casting system, and the discharge port is equipped with the second stopper, the copper heat preservation
The centre position of the side side wall of stove is equipped at least one copper tap hole, is equipped with centre bore on each copper tap hole
Obturating plug, the centre bore is equipped with the first stopper, and the obturating plug other end passes through diversion pipe and the casting system side
Second charging aperture connects, and the first temperature transducer is equipped in the copper melting furnace, and being equipped with the 6th thermometric in the copper holding furnace passes
Sensor is equipped with the second temperature transducer in the aluminium insulated bag, is equipped with third temperature transducer in the aluminium melting furnace, and described the
One temperature transducer, the 6th temperature transducer, the second temperature transducer, third temperature transducer and heating device with integrated control
System connection processed；
The casting system includes composite die, composite die holding furnace, crystallizer, the first secondary cooling apparatus, second
Secondary cooling apparatus, draft gear, saw cutting device and dummy device；
The composite die, which is arranged in the inside of the composite die holding furnace, the composite die holding furnace, is equipped with institute
The 4th temperature transducer is stated, the crystallizer is arranged in composite die holding furnace lower end, the discharging with the composite die
Mouthful connection, the discharge port lower end of the crystallizer from top to bottom according to setting the 5th temperature transducer, the first secondary cooling apparatus,
Second secondary cooling device, draft gear, saw cutting device and dummy device, the 4th temperature transducer, the 5th temperature transducers
Device, the first secondary cooling apparatus, second secondary cooling device, draft gear, saw cutting device and dummy device are integrated with described
Control system connects；
The composite die includes die ontology, copper liquid incubation cavity and core material diversion pipe, the copper liquid incubation cavity and core material
Diversion pipe is arranged on the die ontology, and the copper liquid incubation cavity is in circular ring shape, and the core material diversion pipe is located at the copper
The upper end at the center of liquid incubation cavity, the copper liquid incubation cavity is connect with second charging aperture, the core material diversion pipe and the first charging
Mouth connection, copper liquid incubation cavity lower end are connect with the upper end of the crystallizer, and the core material diversion pipe extend into the crystallization
Device is internally located at the lower end outlet of the crystallizer, and the crystallizer is internally provided with graphite liner；
5th temperature transducer is infrared radiation thermometer or optic fiber thermometer, and temperature-measuring range is 0~600 DEG C, described the
One temperature transducer, the second temperature transducer, third temperature transducer, the 4th temperature transducer and the 6th temperature transducer are heat
Galvanic couple, temperature-measuring range are respectively 0~1300 DEG C；
The crystallizer includes copper mold and cooling jacket.
It is a further object of the present invention to provide a kind of copper-coated aluminium composite material high efficiency continuous casting forming technologies, which is characterized in that
The technique is by the way that temperature measuring equipment is arranged in crystallizer exit, is continuously adopted online to the progress of continuous casting copper clad aluminum bar stock surface temperature
Collection obtains bar stock surface temperature real time data, and sends integrated control system to, and integrated control system is adopted by comparative analysis
The real time temperature data of collection and target temperature data, provide control strategy, and by execute cooling device of system adjustment and
The cooling water flow of secondary cooling apparatus, the casting speed for adjusting copper clad aluminum bar stock, the surface temperature of feedback control bar stock, to
Realize the control to continuous casting compound copper clad aluminum bar stock interfacial structure and performance；
The technique specifically includes following steps：
Step 1：Copper raw material and aluminum feedstock are added separately in copper melting furnace and aluminium melting furnace, copper melting furnace and aluminium are started
Melting furnace carries out heating fusing to copper raw material and aluminum feedstock, while starting copper holding furnace (3) and being kept the temperature to the copper liquid of fusing,
Temperature, the temperature of aluminium melting furnace of copper melting furnace and copper holding furnace pass through the first temperature transducer and third temperature transducer respectively
On-line measurement is carried out, and copper liquid and temperature of aluminum liquid are regulated and controled by PID automatic control programs；
Step 2：Start composite die holding furnace and heating and thermal insulation is carried out to composite die；Meanwhile starting heating device to aluminium
Insulated bag carries out heating and thermal insulation；
Step 3：After composite die temperature reaches the temperature of setting, lifts the first stopper in copper holding furnace, copper is made to protect
Copper liquid in warm stove flows into the copper liquid incubation cavity in composite die, and copper liquid is entered by copper liquid incubation cavity in crystallizer,
Under the cooling effect of crystallizer, solidification forms clad copper pipe；Start draft gear, dummy device is driven, with certain continuous casting
Speed realizes clad copper by the clad copper pipe of solidification forming is pulled straight according to the traction program of setting in a crystallizer
The continuous casting of pipe shapes；
Step 4：After the temperature of aluminium insulated bag reaches set temperature, the molten aluminum in aluminium melting furnace is shifted by aluminium chute
To being kept the temperature in aluminium insulated bag, in the process by be arranged the filter device in aluminium chute to flow through molten aluminum therein into
Row filtering, removes the oxide impurity in molten aluminum, is conducive to the quality for improving product；When the molten aluminum liquid level in aluminium insulated bag
When reaching the extreme higher position of setting, the outlet of aluminium chute is blocked with pricker plug；
Step 5：After the continuous casting of clad copper pipe reaches stable, lift the second stopper in aluminium insulated bag, keeps molten aluminum logical
It crosses core material diversion pipe to be cast in clad copper pipe, in crystallizer and the first secondary cooling apparatus and second secondary cooling device
Under collective effect, solidification forms core material；By the way that the temperature measuring equipment in crystallizer exit, online acquisition copper clad aluminum compound bar is arranged
The surface temperature data of base, and it is real-time transmitted to integrated control system；
Step 6：When the length of continuous casting copper clad aluminum bar stock reaches the size of needs, starts synchronous saw cutting device and cut bar stock
Disconnected, the copper clad aluminum bar stock after cut-out is collected together by transportation system；When the molten aluminum liquid level in aluminium insulated bag drops to setting
Extreme lower position when, extract pricker plug, supplement molten aluminum into aluminium insulated bag；
The temperature of the copper melting furnace and holding furnace is 1150~1250 DEG C；The temperature and aluminium insulated bag of the aluminium melting furnace
Heating and thermal insulation temperature be 700~850 DEG C；The holding temperature of the composite die is 1150~1300 DEG C；The copper-clad aluminium bar
The casting speed of base is 20~500mm/min；Primary cooling water flow in the cooling jacket of the crystallizer is 300~
3000L/h；The cooling water flow of first secondary cooling apparatus is 100~2000L/h, the second secondary cooling device
Cooling water flow is 100~3000L/h；The surface temperature in crystallizer exit copper clad aluminum bar stock is 50~400 DEG C.
The advantages of copper clad aluminum bar stock Multi-strand Continuous Casting composite forming apparatus provided by the invention and its technique, is as follows：
（1）Using Multi-strand Continuous Casting, the production efficiency of continuous casting can be significantly improved, single stream caster combined shaping at present is solved and connects
The slightly lower problem of efficiency is cast, large-scale production is advantageously implemented；
（2）Multi-strand continuous casting system can individually be controlled per first-class casting system, is conducive to the spirit for improving production
Activity and reliability；
（3）By the way that temperature measuring equipment is arranged in crystallizer exit, continuously exist to the progress of continuous casting copper clad aluminum bar stock surface temperature
Line acquires, and obtains bar stock surface temperature real time data, and send integrated control system to, integrated control system passes through comparative analysis
The real time temperature data acquired and target temperature data provide control strategy, and by executing cooling system of system adjustment
The cooling water flow of system crystallizer and secondary cooling apparatus, the casting speed for adjusting copper clad aluminum bar stock, the table of feedback control bar stock
Face temperature accurately controls the compound copper clad aluminum bar stock interfacial structure of continuous casting and performance to realize；
（4）Secondary cooling is carried out to the copper clad aluminum bar stock pulled out from crystallizer using the secondary cooling apparatus of point two-stage,
The structure of the position of solid-liquid interface and Copper-Aluminum compound interface of aluminium core can be not only accurately controlled, but also advantageously reduces temperature ladder
Degree is conducive to improve interface performance to reduce interfacial stress.Description of the drawings
Fig. 1 is a kind of copper-coated aluminium composite material high efficiency continuous casting formation system structural schematic diagram of the present invention.
Fig. 2 is a kind of casting system structural schematic diagram of copper-coated aluminium composite material high efficiency continuous casting formation system of the present invention.
A kind of schematic top plan view of copper-coated aluminium composite material high efficiency continuous casting formation system of Fig. 3 present invention.
In figure：
Specific implementation mode
Technical scheme of the present invention is described further below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, Figure 2 and Figure 3, it is provided by the invention it is a kind of can be multiple to copper clad aluminum that compound interface is accurately controlled
Condensation material multithread high efficiency continuous casting former, which includes three stream caster hybrid systems, mainly by copper melting furnace 1 and heat preservation
Stove 3, aluminium melting furnace 13, aluminium chute 11 and setting filter device 12 therein, aluminium insulated bag 6 and its heating device 5, composite die
15, complex heat-preservation stove 17, crystallizer 18, secondary cooling apparatus 20 and 21, draft gear 22, saw cutting device 23, temperature measuring equipment and
Integrated control systems 26 etc. form.
The temperature measuring equipment includes the first temperature transducer 2, the second temperature transducer 9, third temperature transducer the 14, the 4th
Temperature transducer 16, the 5th temperature transducer 19 and the 6th temperature transducer 32；
Wherein, the copper melting furnace 1 and copper holding furnace 3 use conjoined structure, are separated between the two by furnace wall, the stove
The lower part of wall is equipped with deflector hole 27, and the aluminium chute 11 is internally provided with filter device 12, the aluminium chute 11 by stock guide with
The aluminium insulated bag 6 connects, and 6 outside of the aluminium insulated bag is equipped with heating device 5, and 6 bottom centre position of aluminium insulated bag is set
There are discharge port 28, the discharge port 28 to be connect with the first charging aperture 15-5 at the top of the casting system, the discharge port 28
It is equipped with the second stopper 8, the centre position of the side side wall of the copper holding furnace 3 is equipped at least one copper tap hole 30, each
The obturating plug 31 with centre bore is equipped on the copper tap hole 30, the centre bore is equipped with the first stopper 4, the obturating plug 31
The other end is connect by diversion pipe 29 with the second charging aperture 15-4 of the side of the casting system, is set in the copper melting furnace 1
There is the first temperature transducer 2, the 6th temperature transducers 32 are equipped in the copper holding furnace 3, being equipped with second in the aluminium insulated bag 6 surveys
Temperature sensor 9, the aluminium melting furnace 13 is interior to be equipped with third temperature transducer 14, and first temperature transducer 2, the 6th thermometric pass
Sensor 32, the second temperature transducer 9, third temperature transducer 14 and heating device 5 are connect with integrated control system 26.
As shown in Fig. 2, the casting system includes composite die 15, composite die holding furnace 17, crystallizer the 18, the 1st
Secondary cooling device 20, second secondary cooling device 21, draft gear 22, saw cutting device 23 and dummy device 24；
The composite die 15 is arranged to be equipped in the inside of the composite die holding furnace 17, the complex heat-preservation stove 17
4th temperature transducer 16, the crystallizer 18 are arranged in 17 lower end of composite die holding furnace, with the compound die
The discharge port connection of tool 15, in the discharge port lower end of the crystallizer 18 from top to bottom according to the 5th temperature transducer 19 of setting, the
One secondary cooling apparatus 20, second secondary cooling device 21, draft gear 22, saw cutting device 23 and dummy device 24, described
Four temperature transducers 16, the 5th temperature transducer 19, the first secondary cooling apparatus 20, second secondary cooling device 21, traction dress
It sets 22, saw cutting device 23 and dummy device 24 is connect with the integrated control system 26.
The composite die 15 includes die ontology 15-1, copper liquid incubation cavity 15-2 and core material diversion pipe 15-3, the copper
Liquid incubation cavity 15-2 and core material diversion pipe 15-3 are arranged on the die ontology 15-1, and the copper liquid incubation cavity 15-2 is in circle
Annular, the core material diversion pipe 15-3 are located at the center of the copper liquid incubation cavity 15-2, the upper end of the copper liquid incubation cavity 15-2
It is connect with second charging aperture 15-4, the core material diversion pipe 15-3 is connect with first charging aperture 15-5, the copper liquid incubation cavity 15-
2 lower ends are connect with the upper end of the crystallizer 18, and the core material diversion pipe 15-3 extend into the crystallizer 18 and is internally located at institute
The lower end outlet of crystallizer 18 is stated, the crystallizer 18 is internally provided with graphite liner.5th temperature transducer 19 is infrared
Temperature measurer or optic fiber thermometer, temperature-measuring range are 0~600 DEG C.
First temperature transducer 2, the 6th temperature transducer 32, the second temperature transducer 9, third temperature transducer 14
It is thermocouple with the 4th temperature transducer 16, temperature-measuring range is respectively 0~1300 DEG C.The crystallizer 18 includes copper mold and cooling
Water jacket.
The copper melting furnace 1 and copper holding furnace 3 use conjoined structure, are separated between the two by a shared furnace wall,
The lower part of the furnace wall is equipped with deflector hole, and copper melting furnace and copper holding furnace is made to keep being connected to, and the molten metal in copper melting furnace can be with
It flows into copper holding furnace, the deflector hole is opened in furnace wall lower part and advantageously ensures that the molten metal in holding furnace can fully flow into
In holding furnace；Copper liquid flow-out hole there are three being set on the furnace wall of the holding furnace provides copper liquids to three continuous casting composite furnaces respectively；Institute
It states each copper liquid tap hole and is fitted with obturating plug, the obturating plug is made by refractory materials such as graphite, carries centre bore, obturating plug and copper
The flow-out hole of holding furnace is fitted close, and ensures that copper liquid can only be flowed out from the centre bore of obturating plug；The stopper 4 is by fire proofed woods such as graphite
Material makes, and effect is by being used cooperatively with the obturating plug, and whether the copper liquid controlled in copper holding furnace flows out, if by itself and plug
When seat compresses, one end of the centre bore of obturating plug can be blocked, control copper liquid does not flow out, if copper liquid can flow out when being lifted；
The composite die 15, which is placed in the complex heat-preservation stove 17, carries out heating and thermal insulation, and passes through the obturating plug of diversion pipe and copper holding furnace
The close connection in outlet；The complex heat-preservation stove is closely connect by connecting screw 25 with copper holding furnace；The aluminium insulated bag 6 is placed in
17 top of complex heat-preservation stove, and by closely connecting；The aluminium melting furnace 13 is connect by chute 11 with the aluminium insulated bag 6；
The crystallizer 18 is placed in 17 lower section of the complex heat-preservation stove, is closely connected therewith by hold-down bolt；The secondary cooling dress
It sets level-one and secondary cooling apparatus two level is respectively placed in below crystallizer, effect is the copper-clad aluminium bar to being pulled out from crystallizer
Base carries out two-stage secondary cooling, accurately controls aluminium core the position of solid-liquid interface and interfacial structure and performance；The draft gear 22 is set
Below secondary cooling apparatus, and the saw cutting device 23 is in the lower section of draft gear；The effect of the dummy device 24 be
Continuous casting starting stage auxiliary establishes casting process, one end of dummy device is inserted into the crystallizer 18, when copper liquid enters knot
It when being solidified in brilliant device, can be bonded together with dummy device, the dummy device, will be under the driving of the draft gear 22
The bar stock of solidification forming pulls straight in crystallizer；The effect of the saw cutting device 23 is needed when the copper clad aluminum bar stock of continuous casting reaches
It is cut off after the length wanted.
It is a further object of the present invention to provide a kind of copper-coated aluminium composite material high efficiency continuous casting forming technologies, specifically include following
Step：
Step 1：Copper raw material and aluminum feedstock are added separately in copper melting furnace and aluminium melting furnace, copper melting furnace and aluminium are started
Melting furnace carries out heating fusing to copper raw material and aluminum feedstock, while starting copper holding furnace and being kept the temperature to the copper liquid of fusing, and copper is molten
Change the temperature of stove and copper holding furnace, the temperature of aluminium melting furnace is carried out by the first temperature transducer and third temperature transducer respectively
On-line measurement, and copper liquid and temperature of aluminum liquid are regulated and controled by PID automatic control programs；
Step 2：Start complex heat-preservation stove and heating and thermal insulation is carried out to composite die；Meanwhile starting heating device and aluminium is kept the temperature
Packet carries out heating and thermal insulation；
Step 3：After composite die temperature reaches the temperature of setting, lifts the first stopper in copper holding furnace, copper is made to protect
Copper liquid in warm stove flows into the copper liquid incubation cavity in composite die, and copper liquid is entered by copper liquid incubation cavity in crystallizer,
Under the cooling effect of crystallizer, solidification forms clad copper pipe；Start draft gear, dummy device is driven, with certain continuous casting
Speed realizes clad copper by the clad copper pipe of solidification forming is pulled straight according to the traction program of setting in a crystallizer
The continuous casting of pipe shapes；
Step 4：After the temperature of aluminium insulated bag reaches set temperature, the molten aluminum in aluminium melting furnace is shifted by aluminium chute
To being kept the temperature in aluminium insulated bag, in the process by be arranged the filter device in aluminium chute to flow through molten aluminum therein into
Row filtering, removes the oxide impurity in molten aluminum, is conducive to the quality for improving product；When the molten aluminum liquid level in aluminium insulated bag
When reaching the extreme higher position of setting, the outlet of aluminium chute is blocked with pricker plug；
Step 5：After the continuous casting of clad copper pipe reaches stable, lift the second stopper in aluminium insulated bag, keeps molten aluminum logical
It crosses core material diversion pipe to be cast in clad copper pipe, in crystallizer and the first secondary cooling apparatus and second secondary cooling device
Under collective effect, solidification forms core material；By the way that the temperature measuring equipment in crystallizer exit, online acquisition copper clad aluminum compound bar is arranged
The surface temperature data of base, and it is real-time transmitted to integrated control system；
Step 6：When the length of continuous casting copper clad aluminum bar stock reaches the size of needs, starts synchronous saw cutting device and cut bar stock
Disconnected, the copper clad aluminum bar stock after cut-out is collected together by transportation system；When the molten aluminum liquid level in aluminium insulated bag drops to setting
Extreme lower position when, extract pricker plug, supplement molten aluminum into aluminium insulated bag.The temperature of the copper melting furnace and holding furnace be 1150~
1250℃；The temperature of the aluminium melting furnace and the heating and thermal insulation temperature of aluminium insulated bag are 700~850 DEG C；The composite die
Holding temperature is 1150~1300 DEG C；The casting speed of the copper clad aluminum bar stock is 20~500mm/min；The crystallizer 18
Primary cooling water flow in cooling jacket is 300~3000L/h；The cooling water flow of first secondary cooling apparatus is
The cooling water flow of 100~2000L/h, the second secondary cooling device are 100~3000L/h；It is described to be exported in crystallizer
The surface temperature for locating copper clad aluminum bar stock is 50~400 DEG C.
Embodiment 1：Cross sectional dimensions is four stream high efficiency continuous casting forming technologies of the copper clad aluminum bar stock of Φ 50mm, the copper of bar stock
Layer cladding ratio is 30%.
（1）Copper raw material and aluminum feedstock are added separately in copper melting furnace 1 and aluminium melting furnace 13, copper melting furnace and aluminium are started
Melting furnace carries out heating fusing to copper raw material and aluminum feedstock, and fusion temperature is respectively set as 1150 DEG C and 700 DEG C；Start simultaneously
Copper holding furnace 3 keeps the temperature the copper liquid of fusing, and holding temperature is 1150 DEG C；The temperature of copper melting furnace and holding furnace, aluminium fusing
The temperature of stove is surveyed by the second temperature transducer 2, the 6th temperature transducer 32 and third temperature transducer 14 online respectively
Amount, and copper liquid and temperature of aluminum liquid are regulated and controled by PID automatic control programs；
（2）Start complex heat-preservation stove 17 and heating and thermal insulation is carried out to composite die 15, holding temperature is 1150 DEG C；Meanwhile it opening
Dynamic heating device 5 carries out heating and thermal insulation to aluminium insulated bag 6, and holding temperature is 700 DEG C；
（3）After composite die temperature reaches the temperature of setting, lifts the stopper 4 in copper holding furnace, make in copper holding furnace
Copper liquid flow into composite die, for which part copper liquid under the cooling effect of crystallizer 18, solidification forms clad copper pipe, one
Secondary cooling water flow is 300L/h；Start draft gear 22, drives dummy device 24, it will be with the casting speed of 150mm/min
The clad copper pipe of solidification forming is pulled straight according to the traction program of setting in crystallizer, realizes the continuous casting of clad copper pipe
Forming；
（4）After the temperature of aluminium insulated bag 6 reaches set temperature, the molten aluminum in aluminium melting furnace is transferred to by aluminium chute
Kept the temperature in aluminium insulated bag, in the process by the filter device 12 that is arranged in aluminium chute to flow through molten aluminum therein into
Row filtering；When the molten aluminum liquid level in aluminium insulated bag reaches the extreme higher position of setting, with pricker plug 10 by the outlet of aluminium chute
It blocks；
（5）After the continuous casting of clad copper pipe reaches stable, lifts the stopper 8 in aluminium insulated bag, molten aluminum is made to be cast to packet
In coating copper pipe, under the collective effect of crystallizer 18 and two-stage secondary cooling apparatus 20 and 21, solidification forms core material, secondary cold
But the level-one of water flow is 100L/h, two level 100L/h；By the way that the temperature measuring equipment 19 in crystallizer exit is arranged, adopt online
Collect the surface temperature data of Copper strip, and be real-time transmitted to integrated control system 26, sets the target temperature at this
It it is 50 DEG C, the real time temperature data that integrated control system is acquired by comparative analysis and target temperature data provide control plan
Slightly, and by executing the cooling water flow of system adjustment primary cooling system crystallizer 18 and secondary cooling apparatus, adjusting copper-clad
The casting speed of aluminium bar base, the surface temperature of feedback control bar stock；The copper clad aluminum bar stock of combined shaping is continuous by draft gear
Pull out cooled region；
（6）When the length of continuous casting copper clad aluminum bar stock reaches the size of needs, starts synchronous saw cutting device 23 and cut bar stock
Disconnected, the copper clad aluminum bar stock after cut-out is collected together by transportation system；When the molten aluminum liquid level in aluminium insulated bag drops to setting
Extreme lower position when, extract pricker plug 10, molten aluminum supplemented into aluminium insulated bag 6；
（7）When needing to terminate entire copper clad aluminum bar stock casting process, the molten aluminum outlet in aluminium insulated bag is filled in respectively
Stick 8 clogs, and copper liquid outlet stopper 4 in copper holding furnace is clogged, then the molten metal being stored in composite die is all solidified
After shaping and pulling straight, stop draft gear, stop composite die heating device, carry out stop casting process operation or
Replace the operation of mould for continuous casting.
Embodiment 2：Cross sectional dimensions is three stream high efficiency continuous casting forming technologies of the copper clad aluminum bar stock of 100mm × 100mm, stick
The layers of copper cladding ratio of base is 25%.
（1）Copper raw material and aluminum feedstock are added separately in copper melting furnace 1 and aluminium melting furnace 13, copper melting furnace and aluminium are started
Melting furnace carries out heating fusing to copper raw material and aluminum feedstock, and fusion temperature is respectively set as 1250 DEG C and 850 DEG C；Start simultaneously
Copper holding furnace 3 keeps the temperature the copper liquid of fusing, and holding temperature is 1250 DEG C；The temperature of copper melting furnace and holding furnace, aluminium fusing
The temperature of stove is surveyed by the second temperature transducer 2, the 6th temperature transducer 32 and third temperature transducer 14 online respectively
Amount, and copper liquid and temperature of aluminum liquid are regulated and controled by PID automatic control programs；
（2）Start complex heat-preservation stove 17 and heating and thermal insulation is carried out to composite die 15, holding temperature is 1250 DEG C；Meanwhile it opening
Dynamic heating device 5 carries out heating and thermal insulation to aluminium insulated bag 6, and holding temperature is 850 DEG C；
（3）After composite die temperature reaches the temperature of setting, lifts the stopper 4 in copper holding furnace, make in copper holding furnace
Copper liquid flow into composite die, for which part copper liquid under the cooling effect of crystallizer 18, solidification forms clad copper pipe, one
Secondary cooling water flow is 1000L/h；Start draft gear 22, drives dummy device 24, it will be with the casting speed of 100mm/min
The clad copper pipe of solidification forming is pulled straight according to the traction program of setting in crystallizer, realizes the continuous casting of clad copper pipe
Forming；
（4）After the temperature of aluminium insulated bag 6 reaches set temperature, the molten aluminum in aluminium melting furnace is transferred to by aluminium chute
Kept the temperature in aluminium insulated bag, in the process by the filter device 12 that is arranged in aluminium chute to flow through molten aluminum therein into
Row filtering；When the molten aluminum liquid level in aluminium insulated bag reaches the extreme higher position of setting, with pricker plug 10 by the outlet of aluminium chute
It blocks；
（5）After the continuous casting of clad copper pipe reaches stable, lifts the stopper 8 in aluminium insulated bag, molten aluminum is made to be cast to packet
In coating copper pipe, under the collective effect of crystallizer 18 and two-stage secondary cooling apparatus 20 and 21, solidification forms core material, secondary cold
But the level-one of water flow is 500L/h, two level 600L/h；By the way that the temperature measuring equipment 19 in crystallizer exit is arranged, adopt online
Collect the surface temperature data of Copper strip, and be real-time transmitted to integrated control system 26, sets the target temperature at this
It it is 100 DEG C, the real time temperature data that integrated control system is acquired by comparative analysis and target temperature data provide control plan
Slightly, and by executing system adjustment primary cooling system（Crystallizer 18）Cooling water flow, adjusting copper with secondary cooling apparatus
The casting speed of alclad bar stock, the surface temperature of feedback control bar stock；The copper clad aluminum bar stock of combined shaping is connected by draft gear
It is continuous to pull out cooled region；
（6）When the length of continuous casting copper clad aluminum bar stock reaches the size of needs, starts synchronous saw cutting device 23 and cut bar stock
Disconnected, the copper clad aluminum bar stock after cut-out is collected together by transportation system；When the molten aluminum liquid level in aluminium insulated bag drops to setting
Extreme lower position when, extract pricker plug 10, molten aluminum supplemented into aluminium insulated bag 6；
（7）When needing to terminate entire copper clad aluminum bar stock casting process, the molten aluminum outlet in aluminium insulated bag is filled in respectively
Stick 8 clogs, and copper liquid outlet stopper 4 in copper holding furnace is clogged, then the molten metal being stored in composite die is all solidified
After shaping and pulling straight, stop draft gear, stop composite die heating device, carry out stop casting process operation or
Replace the operation of mould for continuous casting.
Claims (2)
1. a kind of copper-coated aluminium composite material high efficiency continuous casting former, which is characterized in that use Multi-strand Continuous Casting technology, improve continuous casting
Production efficiency；By two-stage secondary cooling system and integrated control system to aluminium core solid liquid interface in continuous casting composite forming processes and
Temperature field is controlled, and realizes the control of continuous casting compound tense interfacial combined function；
The system includes copper melting furnace（1）, holding furnace（3）, heating device（5）, aluminium insulated bag（6）, aluminium chute (11), aluminium fusing
Stove (13), casting system, temperature measuring equipment and integrated control system（26）；
The temperature measuring equipment includes the first temperature transducer（2）, the second temperature transducer（9）, third temperature transducer（14）,
Four temperature transducers（16）With the 5th temperature transducer（19）With the 6th temperature transducer（32）；
Wherein, the copper melting furnace（1）With copper holding furnace（3）It using conjoined structure, is separated between the two by furnace wall, the stove
The lower part of wall is equipped with deflector hole（27）, the aluminium chute (11) is internally provided with filter device（12）, the aluminium chute (11) passes through
Stock guide and the aluminium insulated bag（6）Connection, the aluminium insulated bag（6）Outside is equipped with heating device（5）, the aluminium insulated bag
（6）Bottom centre position is equipped with discharge port（28）, the discharge port（28）With the first charging aperture at the top of the casting system
（15-5）Connection, the discharge port（28）It is equipped with the second stopper（8）, the copper holding furnace（3）Side side wall interposition
At least one copper tap hole is installed（30）, each copper tap hole（30）On be equipped with the obturating plug with centre bore（31）,
The centre bore is equipped with the first stopper（4）, the obturating plug（31）The other end passes through diversion pipe（29）With the casting system one
The second charging aperture of side（15-4）Connection, the copper melting furnace（1）Inside it is equipped with the first temperature transducer（2）, the copper holding furnace
（3）Inside it is equipped with the 6th temperature transducer（32）, the aluminium insulated bag（6）Inside it is equipped with the second temperature transducer（9）, the aluminium fusing
Third temperature transducer is equipped in stove (13)（14）, first temperature transducer（2）, the 6th temperature transducer（32）, second
Temperature transducer（9）, third temperature transducer（14）And heating device（5）And integrated control system（26）Connection；
The casting system includes composite die（15）, composite die holding furnace（17）, crystallizer（18）, the first secondary cooling dress
It sets（20）, second secondary cooling device（21）, draft gear（22）, saw cutting device（23）And dummy device（24）；
The composite die（15）It is arranged in the composite die holding furnace（17）Inside, the composite die holding furnace（17）
It is interior to be equipped with the 4th temperature transducer（16）, the crystallizer（18）It is arranged in the composite die holding furnace（17）Lower end,
With the composite die（15）Discharge port connection, in the crystallizer（18）Discharge port lower end from top to bottom according to setting the 5th
Temperature transducer（19）, the first secondary cooling apparatus（20）, second secondary cooling device（21）, draft gear（22）, sawing dress
It sets（23）And dummy device（24）, the 4th temperature transducer（16）, the 5th temperature transducer（19）, the first secondary cooling dress
It sets（20）, second secondary cooling device（21）, draft gear（22）, saw cutting device（23）And dummy device（24）With the collection
At control system（26）Connection；
The composite die（15）Including die ontology（15-1）, copper liquid incubation cavity（15-2）With core material diversion pipe（15-3）, institute
State copper liquid incubation cavity（15-2）With core material diversion pipe（15-3）It is arranged at the die ontology（15-1）On, the copper liquid heat preservation
Chamber（15-2）In circular ring shape, the core material diversion pipe（15-3）Positioned at the copper liquid incubation cavity（15-2）Center, the copper liquid
Incubation cavity（15-2）Upper end and second charging aperture（15-4）Connection, the core material diversion pipe（15-3）With first charging aperture（15-
5）Connection, the copper liquid incubation cavity（15-2）Lower end and the crystallizer（18）Upper end connection, the core material diversion pipe（15-
3）It extend into the crystallizer（18）It is internally located at the crystallizer（18）Lower end outlet, the crystallizer（18）It is internally provided with
Graphite liner；
5th temperature transducer（19）For infrared radiation thermometer or optic fiber thermometer, temperature-measuring range is 0~600 DEG C,
First temperature transducer（2）, the second temperature transducer（9）, third temperature transducer（14）, the 4th temperature transducer
（16）With the 6th temperature transducer（32）For thermocouple, temperature-measuring range is respectively 0~1300 DEG C,
The crystallizer（18）Including copper mold and cooling jacket.
2. a kind of copper-coated aluminium composite material high efficiency continuous casting forming technology, which is characterized in that the technique is by being exported in crystallizer
Place's setting temperature measuring equipment, carries out continuous online acquisition to continuous casting copper clad aluminum bar stock surface temperature, it is real-time to obtain bar stock surface temperature
Data, and send integrated control system to, the real time temperature data and target that integrated control system is acquired by comparative analysis
Temperature data provides control strategy, and the cooling flow by executing system adjustment cooling device and secondary cooling apparatus
Amount, the casting speed for adjusting copper clad aluminum bar stock, the surface temperature of feedback control bar stock, to realize to the compound copper clad aluminum stick of continuous casting
The control of base interfacial structure and performance；
The technique specifically includes following steps：
Step 1：Copper raw material and aluminum feedstock are added separately to copper melting furnace（1）With aluminium melting furnace（13）In, start copper melting furnace
（1）With aluminium melting furnace (13), heating fusing is carried out to copper raw material and aluminum feedstock, while starting copper of the copper holding furnace (3) to fusing
Liquid is kept the temperature, and copper melting furnace (1) and temperature, the temperature of aluminium melting furnace of copper holding furnace (3) pass through the first temperature transducers respectively
Device（2）With third temperature transducer（14）Carry out on-line measurement, and by PID automatic control programs to copper liquid and temperature of aluminum liquid into
Row regulation and control；
Step 2：Start composite die holding furnace（17）To composite die（15）Carry out heating and thermal insulation；Meanwhile starting heating device
（5）To aluminium insulated bag（6）Carry out heating and thermal insulation；
Step 3：Work as composite die（15）After temperature reaches the temperature of setting, lift the first stopper in copper holding furnace（4）, make copper
Holding furnace（3）In copper liquid flow into composite die（15）In copper liquid incubation cavity（15-2）Interior, copper liquid passes through copper liquid incubation cavity
（15-2）Enter crystallizer（18）It is interior, in crystallizer（18）Cooling effect under, solidification form clad copper pipe；Start traction
Device（22）, drive dummy device（24）, with certain casting speed by the clad copper pipe of solidification forming in a crystallizer
It is pulled straight according to the traction program of setting, realizes the continuous casting forming of clad copper pipe；
Step 4：When aluminium insulated bag（6）Temperature reach set temperature after, by aluminium melting furnace（13）In molten aluminum pass through aluminium chute
（11）It is transferred to aluminium insulated bag（6）In kept the temperature, in the process by the way that the filter device in aluminium chute is arranged（12）It is right
It flows through molten aluminum therein to be filtered, removes the oxide impurity in molten aluminum, be conducive to the quality for improving product；When aluminium insulated bag
In molten aluminum liquid level when reaching the extreme higher position of setting, with pricker plug（10）The outlet of aluminium chute is blocked；
Step 5：After the continuous casting of clad copper pipe reaches stable, lift aluminium insulated bag（6）In the second stopper（8）, make molten aluminum
Pass through core material diversion pipe（15-3）It is cast in clad copper pipe, in crystallizer（18）With the first secondary cooling apparatus（20）With
Two secondary cooling apparatus（21）Collective effect under, solidification form core material；By being arranged in crystallizer（18）The 5th of exit
Temperature transducer（19）, the surface temperature data of online acquisition Copper strip, and it is real-time transmitted to integrated control system
（26）；
Step 6：When the length of continuous casting copper clad aluminum bar stock reaches the size of needs, start synchronous saw cutting device（23）Bar stock is cut
Disconnected, the copper clad aluminum bar stock after cut-out is collected together by transportation system；When aluminium insulated bag（6）In molten aluminum liquid level drop to and set
When fixed extreme lower position, pricker plug is extracted（10）, to aluminium insulated bag（6）Middle supplement molten aluminum；
The copper melting furnace（1）With holding furnace（3）Temperature be 1150~1250 DEG C；The aluminium melting furnace（13）Temperature and aluminium
Insulated bag（6）Heating and thermal insulation temperature be 700~850 DEG C；The composite die（15）Holding temperature be 1150~1300 DEG C；
The casting speed of the copper clad aluminum bar stock is 20~500mm/min；The crystallizer（18）Cooling jacket in primary cooling
Water flow is 300~3000L/h；First secondary cooling apparatus（20）Cooling water flow be 100~2000L/h, it is described
Second secondary cooling device（21）Cooling water flow be 100~3000L/h；It is described in crystallizer exit copper clad aluminum bar stock
Surface temperature is 50~400 DEG C.
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