CN108878063A - The preparation method of copper clad aluminum cable - Google Patents
The preparation method of copper clad aluminum cable Download PDFInfo
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- CN108878063A CN108878063A CN201810709171.XA CN201810709171A CN108878063A CN 108878063 A CN108878063 A CN 108878063A CN 201810709171 A CN201810709171 A CN 201810709171A CN 108878063 A CN108878063 A CN 108878063A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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Abstract
The invention discloses a kind of preparation methods of copper clad aluminum cable, are related to the preparation method technical field of metal material.The method prepares furnace preparation copper clad aluminum bar using copper clad aluminum bar first；Then the copper clad aluminum bar transportation prepared to drawbench carries out drawing process, carries out drawing several times to the copper clad aluminum bar by drawbench and forms Coating Aluminum Weir Materials with Copper Layer, meets the requirements the diameter of its Coating Aluminum Weir Materials with Copper Layer；Finally the Coating Aluminum Weir Materials with Copper Layer prepared is delivered in annealing furnace and is handled, makes to closely adhere between the layers of copper and aluminium core being wrapped on the outside of aluminium core together, forms copper clad aluminum cable.The method, in conjunction with copper clad aluminum composite bar is prepared, due to using the directional solidification technique of layers of copper grade aluminium core, thus has the advantages that aluminium and copper interface cohesion well and aluminium and copper intensity are high using the centrifugal casting of copper and copper and aluminium directional solidification.
Description
Technical field
The present invention relates to the preparation method technical field of metal material more particularly to a kind of preparation sides of copper clad aluminum cable
Method.
Background technique
Copper and copper alloy are due to the preferred material that its excellent comprehensive mechanical performance and high conductivity are cables, but copper
Price it is higher.During signal of communication and power transmission, power frequency is very high, due to " kelvin effect ", transmits
Electric current mainly passes through the surface transmission of cable.Therefore, devise copper-coated aluminum complex lead to save material supply section scholar, using compared with
It is cheap aluminium in the center portion of cable, surface layer uses copper.The density of copper-clad aluminum conductor is 40% of pure copper wire or so.Copper clad aluminum at present
Complex layered materials are communicated with fields such as power Transmissions using more and more extensive.
Currently, traditional copper clad aluminum cable, structure generally include：As the aluminium bar or almag bar of core bar, core bar
On be directly coated with copper strips, and copper strips seam is welded using argon arc welding, then, draws and dial by multi-pass, obtain finished product.
It is well known that copper differs larger with the mechanical performance of aluminium, although have passed through the multi pass drawing more than 80% draft, copper strips and
Almag bar or fine aluminium bar are also unable to reach the close degree of metallurgical bonding.
Summary of the invention
The technical problem to be solved by the present invention is to how provide a kind of good and aluminium and copper with aluminium and copper interface cohesion
The preparation method of the high copper clad aluminum cable of intensity.
In order to solve the above technical problems, the technical solution adopted by the present invention is that：A kind of preparation method of copper clad aluminum cable,
It is characterized by comprising following steps：
1）Prepare copper clad aluminum bar；
2）By step 1）The copper clad aluminum bar transportation prepared to drawbench carries out drawing process, by drawbench to the copper-clad
Aluminium bar material carries out drawing several times and forms Coating Aluminum Weir Materials with Copper Layer, meets the requirements the diameter of its Coating Aluminum Weir Materials with Copper Layer；
3）By step 2）The Coating Aluminum Weir Materials with Copper Layer prepared, which is delivered in annealing furnace, to be handled, and the layers of copper being wrapped on the outside of aluminium core and aluminium are made
It is closely adhered between core together, forms copper clad aluminum cable.
A further technical solution lies in the steps 1）Preparing copper clad aluminum bar, the specific method is as follows：
By raw material aluminium, perhaps aluminium alloy is filled in aluminium melting furnace copper or copper alloy is filled in copper smelter first, then divides
Not Kai Qi aluminium smelting furnace induction coil and copper smelting furnace induction coil, aluminium melting furnace and copper smelter are heated, third thermocouple is passed through
And the 4th temperature in thermocouple measurement furnace body, the first thermocouple is inserted into the copper of upper cover pouring basin component by thermocouple guide cylinder
In melt thermometric half circle groove；
After the cast temperature of two kinds of melts to be achieved, leads to recirculated water to the aqueous cold plate of bottom of furnace body, open centrifugation motor, so that from
The rotation of heart casting mold pipe, opens core pattern electrodynamic repulsion device, after reaching setting revolving speed, drives the first copper smelter sunpender and the second bronze medal molten
Furnace sunpender rotates copper smelter, and copper melts are passed through by rotary table in the cast gate on core pattern electrodynamic repulsion device and upper cover pouring basin group
The cyclic annular cast gate of the outer type ring composition of sprue cup on part is cast, and copper melts is poured into centrifugal casting mould pipe, when the first centrifugation
Drive rod and second centrifugation drive rod between weighing system show reach setting weight after stop casting；Due to centrifugal casting mould pipe
Centrifugal movement and the core pattern electromagnetic induction coil in core pattern electrodynamic repulsion device electromagnetic confinement power effect, formed copper melts
Pipe；
The heating power for controlling lower heater, middle heater and upper heater, starts copper melts in centrifugal casting mould pipe the bottom of from
Portion is to top directional solidification；
When the temperature of the first thermocouple measurement is lower than 40 DEG C -50 DEG C of fusing point of copper, keep lower heater, middle heater and on
The heating power of heater is constant；Close core pattern electrodynamic repulsion device, and by core pattern electrodynamic repulsion device moving lever lifted to
Extreme higher position；Centrifugation motor is simultaneously closed off, after centrifugal casting mould pipe stops operating, determines bottom of furnace body by being centrifuged bar position instrument
The 5th thermocouple and the 6th thermocouple position, be inserted into the second thermocouple to aluminum melt thermometric half circle groove, insertion the
The centrifugal casting mould pipe galvanic couple of five thermocouples and the 6th thermocouple to centrifugal casting mould pipe enters in slot；
Aluminum melt is cast by type ring outside the sprue cup on upper cover pouring basin component, aluminum melt is poured into copper pipe；It is logical
The second thermocouple is crossed, the temperature in the 5th thermocouple and the 6th thermocouple detection centrifugal casting mould pipe controls lower heater, middle heating
The power of device and upper heater, so that aluminum melt starts to complete the copper clad aluminum composite bar from bottom to top directional solidification
Preparation.
A further technical solution lies in：The radial depth of the aluminum melt thermometric half circle groove is greater than the copper melts thermometric
The radial depth of half circle groove.
A further technical solution lies in：The step 3）The specific method is as follows, obtains Coating Aluminum Weir Materials with Copper Layer by step 2)
It is put into vacuum well type annealing furnace, argon gas protection is added after vacuumizing, then, be heated up to 300 DEG C~480 DEG C, keep the temperature 2 hours~
3 hours.
Generated beneficial effect is by adopting the above technical scheme：When the method makes copper clad aluminum cable, make first
Furnace preparation copper clad aluminum bar is prepared with copper clad aluminum bar；Then the copper clad aluminum bar transportation prepared to drawbench carries out at drawing
Reason carries out drawing several times to the copper clad aluminum bar by drawbench and forms Coating Aluminum Weir Materials with Copper Layer, makes the straight of its Coating Aluminum Weir Materials with Copper Layer
Diameter is met the requirements；Finally the Coating Aluminum Weir Materials with Copper Layer prepared is delivered in annealing furnace and is handled, the layers of copper being wrapped on the outside of aluminium core is made
It is closely adhered between aluminium core together, forms copper clad aluminum cable.The system and method using copper centrifugal casting and copper and
Aluminium directional solidification due to using the directional solidification technique of layers of copper grade aluminium core, thus has in conjunction with copper clad aluminum composite bar is prepared
There is aluminium and copper interface cohesion is good and aluminium and copper intensity are high.In addition, described device and method further include carrying out at annealing
The step of reason, can further improve the formedness of aluminium and copper interface cohesion.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the functional block diagram of system described in the embodiment of the present invention；
Fig. 2 is that the copper clad aluminum bar in system described in the embodiment of the present invention prepares furnace structure schematic diagram；
Fig. 3 is the schematic cross-sectional view that copper clad aluminum bar described in the embodiment of the present invention prepares core pattern electrodynamic repulsion device in furnace；
Fig. 4 is the schematic cross-sectional view that copper clad aluminum bar described in the embodiment of the present invention prepares upper cover pouring basin component in furnace；
Fig. 5 is the structural schematic diagram that copper clad aluminum bar when casting molten aluminum of the embodiment of the present invention prepares furnace；
Fig. 6 is the structural schematic diagram that copper clad aluminum bar in coagulation forming of the embodiment of the present invention prepares furnace；
Fig. 7 is the flow chart of the method for the embodiment of the present invention；
1, furnace body 2, copper smelter component 201, copper smelter 202, the first copper smelter sunpender 203, the second copper smelter sunpender
204, copper smelter induction coil 205, copper smelter insulating layer 3, aluminium melting furnace component 301, aluminium melting furnace 302, the first aluminium are molten
Furnace sunpender 303, the second aluminium melting furnace sunpender 304, aluminium melting furnace induction coil 305, aluminium melting furnace insulating layer 4, centrifugal casting mould
Pipe support 5, centrifugal casting mould pipe 6, aqueous cold plate 7, core pattern electrodynamic repulsion device 701, rotary table 702, core pattern electromagnetic induction coil in cast gate
Carrier 703, core pattern electromagnetic induction coil 704, protective layer 8, lower heater 9, middle heater 10, upper cover pouring basin component
1001, the outer type ring 1002 of sprue cup, sprue cup upper cover 11, thermocouple guide cylinder 12, the first thermocouple 13, the second thermocouple 14, the
One centrifugation drive rod 15, weighing system 16, second be centrifuged drive rod 17, centrifugation motor 18, core pattern electrodynamic repulsion device moving lever 19,
Third thermocouple 20, the 4th thermocouple 21, copper melts thermometric half circle groove 22, aluminum melt thermometric half circle groove 23, centrifugal casting mould pipe electricity
It is even to enter slot 24, centrifugation bar position instrument 25, the 5th thermocouple 26, the 6th thermocouple 27, copper melts 28, upper heater 29, outer layer
Copper or copper alloy 30, aluminium column or aluminium alloy column 31, copper clad aluminum bar prepare furnace 32, drawbench 33, the transmission dress of annealing furnace 34, first
Set 35, second conveyer.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
As shown in Figure 1, the system comprises copper-clads the embodiment of the invention discloses a kind of preparation system of copper clad aluminum cable
Aluminium bar material prepares furnace 31, drawbench 32 and annealing furnace 33, and the furnace for preparing is used to prepare copper clad aluminum bar, it is described prepare furnace with
Second conveyer 34 is provided between the drawbench 32, the copper clad aluminum bar after cooling passes through second conveyer 34
It sends the drawbench 32 to and carries out drawing process several times, form Coating Aluminum Weir Materials with Copper Layer, the drawbench 32 and the annealing furnace
Second conveyer 35 is provided between 33, the Coating Aluminum Weir Materials with Copper Layer after drawing is sent to by the second conveyer 35
The annealing furnace 33 is made annealing treatment, and the Coating Aluminum Weir Materials with Copper Layer after annealing is taken out by withdrawing device.
As shown in Fig. 2, it includes furnace body 1 that the copper clad aluminum bar, which prepares furnace 31, it is molten that the upper left side of the furnace body 1 is provided with copper
The upper right side of furnace component, the furnace body 1 is provided with aluminium melting furnace component 3.Downside inside the furnace body 1 is provided with centrifugal casting
Type pipe support 4, the centrifugal casting mould pipe support and are provided with centrifugal casting mould pipe 5 on 4, and the downside of the centrifugal casting mould pipe support 4 is set
It is equipped with aqueous cold plate 6, core pattern electrodynamic repulsion device 7 is provided in the furnace body 1, core pattern electrodynamic repulsion device 7 can enter centrifugal casting mould pipe 5
Center, maintain distance between the periphery of the core pattern electrodynamic repulsion device 7 and the inner wall of the centrifugal casting mould pipe 5（Setting institute
The purpose for stating distance is to make to form layers of copper between the periphery of the core pattern electrodynamic repulsion device 7 and the inner wall of the centrifugal casting mould pipe 5
Casting space）.
The periphery of the centrifugal casting mould pipe 5 is disposed with lower heater 8, middle heater 9 and upper heater from top to bottom
28.The upper port of the centrifugal casting mould pipe 5 is provided with upper cover pouring basin component 10, is provided on the upper cover pouring basin component 10
Thermometric annular groove is symmetrically arranged with two thermocouple guide cylinders 11 on the inboard wall of furnace body opposite with the thermometric annular groove.The thermocouple
First thermocouple 12 and the second thermocouple 13, first thermocouple 12 and the second thermoelectricity are respectively arranged in guide cylinder 11
Even 13 for measuring respective metal in centrifugal casting mould pipe 5（The metal is copper or copper alloy and aluminum or aluminum alloy）Temperature.
The bottom surface of the centrifugal casting mould pipe support 4 is provided with the first centrifugation drive rod 14, the lower end of the first centrifugation drive rod 14
It is connect by weighing system 15 with the upper end of the second centrifugation drive rod 16, the lower end of the second centrifugation drive rod 16 extends to institute
It states outside furnace body 1, and the lower end of the second centrifugation drive rod 15 is provided with centrifugation motor 17.The centrifugation motor 17 passes through described
Being centrifuged drive rod drives the centrifugal casting mould pipe 5 to rotate, and then the centrifugal casting mould pipe 5 drives the upper cover pouring basin component 10
Rotation, the upside of the furnace body 1 are provided with core pattern electrodynamic repulsion device moving lever 18, the core pattern electrodynamic repulsion device moving lever 18
One end is located at outside the furnace body 1, and the other end is fixedly connected with the core pattern electrodynamic repulsion device 7.
The copper clad aluminum bar prepares furnace and is melted to realize to copper by the rotation of centrifugal casting mould pipe 5 and core pattern electrodynamic repulsion device 7
The tubulose character shape of control copper melts is realized in the repulsive interaction of body；Pass through control lower heater 8, middle heater 9 and lower heating
28 power of device, copper melts start from bottom to top directional solidification in centrifugal casting mould pipe 5；Then stop centrifugal casting mould pipe 5 from
Heart movement, lifts core pattern electrodynamic repulsion device 7, and corresponding thermocouple is then inserted into centrifugal casting mould pipe 5 and upper cover pouring basin component
In 10 thermometer hole, aluminum melt of casting；According to thermocouple temperature control heater power, the directional solidification of aluminum melt is realized.
Further, as shown in Fig. 2, the copper smelter component 2 includes copper smelter 201, the first copper smelter sunpender
202, the second copper smelter sunpender 203, copper smelter induction coil 204 and copper smelter insulating layer 205, the copper smelter
Component 2 is mainly used for the melting of copper or Cu alloy material.The copper smelter induction coil 204 is located at the copper smelter 201
Periphery, the copper smelter insulating layer 205 by the copper smelter induction coil 204 cover and with the copper smelter 201
It is fixedly connected.One end of the first copper smelter sunpender 202 and the second copper smelter sunpender 203 is located at outside the furnace body 1, institute
The other end for stating the first copper smelter sunpender 202 and the second copper smelter sunpender 203 is located in the furnace body 1, and with the copper
Smelting furnace insulating layer 205 or copper smelter 201 are fixedly connected, by operating the first copper smelter sunpender 202 and the second bronze medal
Smelting furnace sunpender 203 tilts the copper smelter 201, carries out toppling over for copper melts.The upper left side of the furnace body 1 is provided with
Three thermocouple 19, the third thermocouple 19 are mainly used for measuring furnace body 1 close to the temperature of 2 position of copper smelter component.
Further, as shown in Fig. 2, the aluminium melting furnace component 3 includes aluminium melting furnace 301, the first aluminium melting furnace sunpender
302, the second aluminium melting furnace sunpender 303, aluminium melting furnace induction coil 304 and aluminium melting furnace insulating layer 305, the aluminium melting furnace
Component 3 is mainly used for the melting of aluminum or aluminum alloy material.The aluminium melting furnace induction coil 304 is located at the aluminium melting furnace 301
Periphery, the aluminium melting furnace insulating layer 305 by the aluminium melting furnace induction coil 304 cover and with the aluminium melting furnace 301
It is fixedly connected.One end of the first aluminium melting furnace sunpender 302 and the second aluminium melting furnace sunpender 303 is located at outside the furnace body 1, institute
The other end for stating the first aluminium melting furnace sunpender 302 and the second aluminium melting furnace sunpender 303 is located in the furnace body 1, and with the aluminium
Smelting furnace insulating layer 305 or aluminium melting furnace 301 are fixedly connected, by operating the first aluminium melting furnace sunpender 302 and the second aluminium
Smelting furnace sunpender 303 tilts the aluminium melting furnace 301, carries out toppling over for aluminum melt.The upper right side of the furnace body 1 is provided with
Four thermocouples 20, the 4th thermocouple 20 are mainly used for measuring furnace body 1 close to the temperature of 3 position of aluminium melting furnace component.
As shown in figure 3, the core pattern electrodynamic repulsion device 7 includes rotary table 701 in cast gate, in the cast gate under rotary table 701
Side is provided with core pattern electromagnetic induction coil carrier 702, and core pattern electricity is provided in the core pattern electromagnetic induction coil carrier 702
Magnetic induction coil 703 has recirculated water in the core pattern electromagnetic induction coil 703.The core pattern electromagnetic induction coil carrier 702
And in cast gate rotary table 701 periphery be arranged matcoveredn 704, the lower end of the core pattern electrodynamic repulsion device moving lever 18 with it is described
Rotary table 701 is fixedly connected in cast gate, and the big upper end in the lower end of rotary table 701 is small in the cast gate, the core pattern electromagnetic induction coil 703
Diameter be gradually reduced from top to bottom so that the periphery of core pattern electromagnetic induction coil 703 and core pattern electromagnetic induction coil carrier
The range of angle theta between 702 outer walls is 15 ° -30 °（Effect is primarily to mention the electromagnetic force generated can further
For centrifugal force, moreover it is possible to generate upward power to overcome the gravity of melt）.The protective layer 704 of core pattern electrodynamic repulsion device is for preventing
In melt bonds to core pattern electrodynamic repulsion device 7, core pattern electromagnetic induction coil 703 may be used also other than repelling to copper melts
It is heated with the inner wall to centrifugal casting mould pipe 5, prevents from forming interior solidification layer, hinder the formation of melt pipe.
As shown in figure 4, the upper cover pouring basin component 10 includes the outer type ring 1001 of sprue cup and sprue cup upper cover 1002.Institute
The periphery that sprue cup upper cover 1002 is located at the outer type ring 1001 of the sprue cup is stated, the thermometric annular groove is along the sprue cup upper cover
The internal diameter of 1002 periphery setting, the outer type ring 1001 of the sprue cup is gradually increased from top to bottom, 701, rotary table in the cast gate
In outside the sprue cup in type ring 1001, and lower end between the two constitutes the sprue gate of melt.First thermocouple 12 passes through
It crosses a thermocouple guide cylinder 11 to enter in the thermometric annular groove, for measuring centrifugal casting in centrifugal casting mould 5 high speed rotation of pipe
The temperature of copper melts in type pipe 5.Second thermocouple 13 enters the thermometric annular groove by another thermocouple guide cylinder 11
It is interior, for measuring the temperature of aluminum melt in centrifugal casting mould pipe 7 when centrifugal casting mould pipe 5 stops rotating.
The thermometric annular groove includes copper melts thermometric slot 21 and aluminum melt thermometric half circle groove 22, because the aluminum melt is located at
Inside and copper melts are located at outside, therefore, the radial depth of the aluminum melt thermometric half circle groove 21 is greater than the copper melts thermometric
The radial depth of half circle groove 22 facilitates corresponding thermocouple to enter simultaneously thermometric, improves the accuracy of temperature measurement.In addition, institute
It states copper melts thermometric half circle groove 21 and aluminum melt thermometric half circle groove 22 is generally the groove of semi-annular shape, and mutually interconnect between the two
It is logical.
As shown in Fig. 2, there are two bottom of furnace body thermocouple access aperture for the bottom setting of the furnace body 1, with the furnace body bottom
It is provided with centrifugal casting mould pipe galvanic couple on the corresponding centrifugal casting mould pipe 5 of portion's thermocouple access aperture and enters slot 23, described second
Centrifugation bar position instrument 24 is provided on centrifugation drive rod 16, centrifugation bar position instrument 24 is for the 5th thermocouple 25 of measurement and the
Six thermocouples 26 are inserted into the position that the centrifugal casting mould pipe galvanic couple enters slot.
As shown in fig. 7, including the following steps the embodiment of the invention also discloses a kind of preparation method of copper clad aluminum cable：
1）Prepare copper clad aluminum bar；
2）By step 1）The copper clad aluminum bar transportation prepared to drawbench 32 carries out drawing process, by drawbench 32 to described
Copper clad aluminum bar carries out drawing several times and forms Coating Aluminum Weir Materials with Copper Layer, meets the requirements the diameter of its Coating Aluminum Weir Materials with Copper Layer；
3）By step 2）The Coating Aluminum Weir Materials with Copper Layer prepared is delivered in annealing furnace 33 and handles, make the layers of copper being wrapped on the outside of aluminium core with
It is closely adhered between aluminium core together, forms copper clad aluminum cable.
The step 1）Preparing copper clad aluminum bar, the specific method is as follows：
Firstly, by raw material aluminium, perhaps aluminium alloy is filled in aluminium melting furnace 301 copper or copper alloy is filled in copper smelter 201,
Then it is separately turned on aluminium smelting furnace induction coil 304 and copper smelting furnace induction coil 204, aluminium melting furnace 301 and copper smelter 201 are added
Heat, measures the temperature in furnace body 1 by third thermocouple 19 and the 4th thermocouple 20, and the first thermocouple 12 is oriented to by thermocouple
Cylinder 11 is inserted into the copper melts thermometric half circle groove 21 of upper cover pouring basin component 10；
After the cast temperature of two kinds of melts to be achieved, lead to recirculated water to the aqueous cold plate 6 of 1 bottom of furnace body, opens centrifugation motor 17, make
It obtains centrifugal casting mould pipe 5 to rotate, opens core pattern electrodynamic repulsion device 7, after reaching setting revolving speed, drive the first copper smelter sunpender 202
Copper smelter 201 is rotated with the second copper smelter sunpender 203, copper melts are passed through by the cast gate on core pattern electrodynamic repulsion device 7
The cyclic annular cast gate that the outer type ring 1001 of sprue cup on rotary table 701 and upper cover pouring basin component 10 forms is cast, by copper melts
It pours into centrifugal casting mould pipe 7, when the display of weighing system 15 between the first centrifugation drive rod 14 and the second centrifugation drive rod 16 reaches
Stop casting after to setting weight；Due to the core pattern electromagnetism sense in the centrifugal movement and core pattern electrodynamic repulsion device 7 of centrifugal casting mould pipe 5
The effect of the electromagnetic confinement power of coil 703 is answered, copper melts pipe is formed；
The heating power for controlling lower heater 8, middle heater 9 and upper heater 28, starts copper melts in centrifugal casting mould pipe 5
From bottom to top directional solidification；
When the temperature of the first thermocouple 12 measurement is lower than 40 DEG C -50 DEG C of fusing point of copper, keep lower heater 8, middle heater 9 with
And the heating power of upper heater 28 is constant；Core pattern electrodynamic repulsion device 7 is closed, and will by core pattern electrodynamic repulsion device moving lever 18
It lifts to extreme higher position；Centrifugation motor 17 is simultaneously closed off, after centrifugal casting mould pipe 5 stops operating, by being centrifuged bar position instrument
24 determine the position of the 5th thermocouple 25 of bottom of furnace body and the 6th thermocouple 26, are inserted into the second thermocouple 13 to aluminum melt
In thermometric half circle groove 22, be inserted into the 5th thermocouple 25 and the 6th thermocouple 26 to centrifugal casting mould pipe 5 centrifugal casting mould pipe galvanic couple into
Enter in slot；
Aluminum melt is cast by type ring 1001 outside the sprue cup on upper cover pouring basin component 10, as shown in figure 4, aluminium is melted
Body pours into copper pipe；Temperature by the second thermocouple 13, in the 5th thermocouple 25 and the 6th thermocouple 26 detection centrifugal casting mould pipe 5
Degree, the power of control lower heater 8, middle heater 9 and upper heater 28, so that aluminum melt starts to coagulate from bottom to top orientation
Gu completing the preparation of the copper clad aluminum composite bar, as shown in Figure 6.
Further, the step 3）The specific method is as follows：Coating Aluminum Weir Materials with Copper Layer is obtained by step 2) and is put into vacuum well type
Argon gas protection is added in annealing furnace, after vacuumizing, then, is heated up to 300 DEG C~480 DEG C, keeps the temperature 2 hours~3 hours.
The system comprises copper clad aluminum bars to prepare furnace, drawbench and annealing furnace, first when making the copper clad aluminum cable
First furnace preparation copper clad aluminum bar is prepared using copper clad aluminum bar；Then copper clad aluminum bar transportation to the drawbench prepared is drawn
Processing is pulled out, drawing several times is carried out to the copper clad aluminum bar by drawbench and forms Coating Aluminum Weir Materials with Copper Layer, makes its Coating Aluminum Weir Materials with Copper Layer
Diameter meet the requirements；Finally the Coating Aluminum Weir Materials with Copper Layer prepared is delivered in annealing furnace and is handled, makes to be wrapped on the outside of aluminium core
It is closely adhered between layers of copper and aluminium core together, forms copper clad aluminum cable.The system and method using copper centrifugal casting and
Copper and aluminium directional solidification are in conjunction with copper clad aluminum composite bar is prepared, due to using the directional solidification technique of layers of copper grade aluminium core, because
And have the advantages that aluminium and copper interface cohesion are good and aluminium and copper intensity are high.In addition, described device and method further include being moved back
The step of fire processing, it can further improve the formedness of aluminium and copper interface cohesion.
Claims (4)
1. a kind of preparation method of copper clad aluminum cable, it is characterised in that include the following steps：
1）Prepare copper clad aluminum bar；
2）By step 1）The copper clad aluminum bar transportation prepared is to drawbench（32）Drawing process is carried out, by drawbench to described
Copper clad aluminum bar carries out drawing several times and forms Coating Aluminum Weir Materials with Copper Layer, meets the requirements the diameter of its Coating Aluminum Weir Materials with Copper Layer；
3）By step 2）The Coating Aluminum Weir Materials with Copper Layer prepared is delivered to annealing furnace（33）Middle processing makes the layers of copper being wrapped on the outside of aluminium core
It is closely adhered between aluminium core together, forms copper clad aluminum cable.
2. the preparation method of copper clad aluminum cable as described in claim 1, it is characterised in that the step 1）Prepare copper clad aluminum
The specific method is as follows for bar：
Raw material aluminium or aluminium alloy are filled to aluminium melting furnace first（301）In, copper or copper alloy are filled to copper smelter（201）
In, then it is separately turned on aluminium smelting furnace induction coil（304）With copper smelting furnace induction coil（204）, to aluminium melting furnace（301）It is molten with copper
Furnace（201）Heating, passes through third thermocouple（19）And the 4th thermocouple（20）Measure furnace body（1）In temperature, by first heat
Galvanic couple（12）Pass through thermocouple guide cylinder（11）It is inserted into upper cover pouring basin component（10）Copper melts thermometric half circle groove（21）In；
After the cast temperature of two kinds of melts to be achieved, furnace body is given（1）The aqueous cold plate of bottom（6）Logical recirculated water opens centrifugation motor
（17）, so that centrifugal casting mould pipe（5）Core pattern electrodynamic repulsion device is opened in rotation（7）, after reaching setting revolving speed, the first bronze medal of driving is molten
Furnace sunpender（202）With the second copper smelter sunpender（203）Rotate copper smelter（201）, copper melts are passed through by core pattern electromagnetism
Repulser（7）On cast gate in rotary table（701）And upper cover pouring basin component（10）On the outer type ring of sprue cup（1001）Composition
Cyclic annular cast gate is cast, and copper melts are poured into centrifugal casting mould pipe（7）In, when the first centrifugation drive rod（14）It is driven with the second centrifugation
Lever（16）Between weighing system（15）Display stops casting after reaching setting weight；Due to centrifugal casting mould pipe（5）Centrifugation
Movement and core pattern electrodynamic repulsion device（7）Interior core pattern electromagnetic induction coil（703）Electromagnetic confinement power effect, formed copper melts
Pipe；
Control lower heater（8）, middle heater（9）And upper heater（28）Heating power, make centrifugal casting mould pipe（5）Middle copper
Melt starts from bottom to top directional solidification；
To the first thermocouple（12）When the temperature of measurement is lower than 40 DEG C -50 DEG C of fusing point of copper, lower heater is kept（8）, middle heating
Device（9）And upper heater（28）Heating power it is constant；Close core pattern electrodynamic repulsion device（7）, and pass through core pattern electrodynamic repulsion
Device moving lever（18）Lifted to extreme higher position；Simultaneously close off centrifugation motor（17）, to centrifugal casting mould pipe（5）It stops operating
Afterwards, by being centrifuged bar position instrument（24）Determine the 5th thermocouple of bottom of furnace body（25）And the 6th thermocouple（26）Position, so
After be inserted into the second thermocouple（13）To aluminum melt thermometric half circle groove（22）It is interior, it is inserted into the 5th thermocouple（25）And the 6th thermocouple
（26）To centrifugal casting mould pipe（5）Centrifugal casting mould pipe galvanic couple enter in slot；
Aluminum melt is passed through into upper cover pouring basin component（10）On the outer type ring of sprue cup（1001）It casts, aluminum melt is poured into
In copper pipe；Pass through the second thermocouple（13）, the 5th thermocouple（25）And the 6th thermocouple（26）Detect centrifugal casting mould pipe（5）In
Temperature controls lower heater（8）, middle heater（9）And upper heater（28）Power so that aluminum melt starts from bottom to top
Portion's directional solidification completes the preparation of the copper clad aluminum composite bar.
3. the preparation method of copper clad aluminum cable as described in claim 1, it is characterised in that：The aluminum melt thermometric half circle groove
（21）Radial depth be greater than the copper melts thermometric half circle groove（22）Radial depth.
4. the preparation method of copper clad aluminum cable as described in claim 1, which is characterized in that the step 3）Specific method such as
Under：
Coating Aluminum Weir Materials with Copper Layer is obtained by step 2) to be put into vacuum well type annealing furnace, and argon gas protection, then, heating are added after vacuumizing
To 300 DEG C~480 DEG C, 2 hours~3 hours are kept the temperature.
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