CN102651258A - Method for producing copper-aluminum composite bus bar - Google Patents

Method for producing copper-aluminum composite bus bar Download PDF

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Publication number
CN102651258A
CN102651258A CN2011102240487A CN201110224048A CN102651258A CN 102651258 A CN102651258 A CN 102651258A CN 2011102240487 A CN2011102240487 A CN 2011102240487A CN 201110224048 A CN201110224048 A CN 201110224048A CN 102651258 A CN102651258 A CN 102651258A
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copper
plain
special
copper aluminium
aluminium
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CN2011102240487A
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张坚华
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SUZHOU HUATONG COMPOUND MATERIAL CO Ltd
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SUZHOU HUATONG COMPOUND MATERIAL CO Ltd
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Priority to CN2011102240487A priority Critical patent/CN102651258A/en
Publication of CN102651258A publication Critical patent/CN102651258A/en
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Abstract

The invention provides a method for producing a copper-aluminum composite bus bar, which comprises the following steps of: injecting a molten aluminum liquid with the temperature controlled at a pouring temperature into a shaped brass tube and cooling to form a copper-aluminum composite ingot; and heating the copper-aluminum composite ingot to a rolling temperature, and allowing the heated copper-aluminum composite ingot to enter a hot strip mill comprising a plurality of pairs of flat rollers and vertical rollers which are arranged at intervals to produce the copper-aluminum composite bus bar, wherein the overall reduction of the copper-aluminum composite ingot before and after entering the hot strip mill ranges from 50% to 78%. Through the method for producing the copper-aluminum composite bus bar, the bonding fastness of copper and aluminum in the copper-aluminum composite bus bar can be greatly improved, the quality of finished products is improved, and the service life of the copper-aluminum composite bus bar is prolonged.

Description

The compound row's of copper aluminium production method
Technical field
The present invention relates to a kind of manufacturing processing method of electrical material, relate in particular to the compound row's of a kind of copper aluminium production method.
Background technology
Bus-bar is claimed bus or busbar again, is a kind of current that transmits big electric current, is the indispensable chief component of electric equipment, also is one of main material in the engineering construction project.Bus-bar has copper bus-bar (abbreviation copper bar), aluminium bus-bar (being called for short aluminium row) and copper-aluminum compound busbar (being called for short the compound row of copper aluminium) by the material division.The compound exclusive layer of copper aluminium is an aluminium for the copper inner core, has both kept the characteristics that the copper bar oxidation resistance is strong, contact resistance is little, has utilized the advantage that aluminium is in light weight, cost is low again.The compound row of copper aluminium is that lower contact resistance is integrated in one with the high chemical stability of the high conduction performance of aluminium, low-cost resource and copper, reaches a kind of novel conductor of " with aluminium joint copper ", realization low-cost energy-saving.Because the effect of electric current skin effect, the compound row's of copper aluminium conductance is more much higher than aluminium row, and near copper bar, weight is 45% of copper bar; Price is 50% of a copper bar, is used for electric equipment, and is easy for installation, and the life-span is longer; Be the optimal material that substitutes copper bar, cheap because of it, receive client's welcome deeply.
The compound row's of existing copper aluminium manufacturing processing has three kinds of methods usually, and first kind is quiet liquid extrusion process, dresses up the extruded stock ingot with the excellent base cover of major diameter copper pipe base and fine aluminium, again through high hydrostatic pressure with process the deformation rate effect greatly and reach the combination between copper, aluminium; Second kind is directly copper strips and aluminium row pressure to be connected together through applying mechanical pressure two wide of aluminium strips; The third is to adopt flat, edger roll to suppress with core, and copper strips is coated on the aluminium row, then longitudinal joint is welded, and stretchedly again obtains the compound row of copper aluminium.In several kinds of compound rows' of copper aluminium of above-mentioned introduction the production method; All be that solid phase combines between the copper aluminium, in the production of reality is used, through regular meeting since between the copper aluminium bond strength not high; Add phenomenons such as man-hour occur the layering of copper aluminium, reduced the compound row's of copper aluminium useful life.
Summary of the invention
The object of the present invention is to provide the compound row's of a kind of copper aluminium production method, its mode through solid-liquid combination makes between copper aluminium and combines closely, thereby has improved the compound row's of copper aluminium end product quality, prolongs the compound row of copper aluminium useful life.
For realizing the foregoing invention purpose, the present invention provides the compound row's of a kind of copper aluminium production method, and it may further comprise the steps:
The molten aluminum liquid that temperature is controlled at pouring temperature is injected special-shaped copper pipe, and cooling, to form copper aluminium composite ingot;
Heat said copper aluminium composite ingot to rolling temperature; And the some continuous hot-rolling mills to plain-barreled roll and edger roll of the copper aluminium composite ingot after will heating through including alternate setting to be to process the compound row of copper aluminium, and said copper aluminium composite ingot is 50%~78% through the overall reduction scope before and after the continuous hot-rolling mill.
As further improvement of the present invention, when plain-barreled roll was 5 pairs, copper aluminium composite ingot order was followed successively by 35%~50%, 15%~30%, 10%~25%, 5%~20%, 3%~15% through the drafts scope before and after every pair of plain-barreled roll.
As further improvement of the present invention; Identical in the said copper aluminium composite ingot unit interval through the volume between the roll gap of every pair of plain-barreled roll; Said some rotating speed branches to plain-barreled roll are equipped with this as the basis, and confirm rotating speed according to copper aluminium composite ingot through last speed to the plain-barreled roll outlet; Said muzzle velocity scope is 0.3~2m/s, can adjust according to throughput requirements.
As further improvement of the present invention, the rotating speed of said every pair of plain-barreled roll also can finely tune 1%~5% with being selected on the basis of above-mentioned definite rotating speed, between each is to plain-barreled roll, has certain power that parts a little to guarantee copper aluminium composite ingot.
As further improvement of the present invention, said molten aluminum liquid realizes the control of pouring temperature in the pressure pouring holding furnace, and through injecting gas in said holding furnace, so that the aluminium hydraulic pressure in the holding furnace is come out to realize cast; Said pouring temperature range is 680 ℃~750 ℃.
As further improvement of the present invention, said holding furnace is provided with the graphite pouring nozzle, and molten aluminum liquid is injected special-shaped copper pipe through said graphite pouring nozzle, and the inside diameter ranges of said graphite pouring nozzle is 4~15mm.
As further improvement of the present invention, said special-shaped copper pipe is arranged on the disk casting machine, and said disk casting machine has several work stations, fixedly installs a special-shaped copper pipe on each station; Said disk casting machine makes the special-shaped copper pipe on each station forward pouring position to through rotation, realizes the cast of aluminium liquid to align with said graphite pouring nozzle.
As further improvement of the present invention; When special-shaped copper pipe forwards pouring position to; A pair of clamping limb clamps and remains on pouring position with said special-shaped copper pipe; Said clamping limb is provided with first water-cooling system and when aluminium liquid is poured into a mould, to open said special-shaped copper pipe is cooled off, and the cooling rate scope is 10 ℃~50 ℃/s; When the special-shaped copper pipe of casting complete changed next station over to, second water-cooling system that is positioned at this station was opened the special-shaped copper pipe of casting complete is proceeded cooling.
As further improvement of the present invention, said copper aluminium composite ingot has the heating furnace of inert gas and reducing atmosphere to be heated to rolling temperature through injection, and said rolling temperature scope is 300 ℃~548 ℃.
As further improvement of the present invention, this method also comprises glacing flatness and the linearity of regulating the compound row of copper aluminium through automatic shaping equipment; Said automatic shaping equipment comprises 8 pairs of smooth rollers and the whole roller of 8 opposition; Its shaping temperature is 100~300 ℃; Smooth roller gap is set according to compound row's specification and template situation with upright whole roller opening degree, and wherein the amount of compression 0~0.3mm of smooth roller is adjustable, and the amount of compression 0~3mm of upright whole roller is adjustable.
Compared with prior art; The invention has the beneficial effects as follows: after molten aluminum liquid being poured into a mould into special-shaped copper pipe cooling; Heating is carried out hot continuous rolling and is made the compound row of compact copper aluminium between copper aluminium again, has realized metallurgical binding between the copper aluminium, and bond strength is high; Improve the compound row's of copper aluminium end product quality, prolonged the compound row's of copper aluminium useful life.
Description of drawings
Fig. 1 is the process chart in the compound row's of copper aluminium of the present invention production method one embodiment;
Fig. 2 is the generalized section that is used for the pressure pouring holding furnace of insulation of aluminium liquid and cast in the compound row's of the copper aluminium shown in Figure 1 production method;
Fig. 3 is the enlarged diagram of the graphite pouring nozzle of pressure pouring holding furnace shown in Figure 2;
Fig. 4 is the schematic top plan view of disk casting machine in the compound row's of copper aluminium of the present invention production method one embodiment;
Fig. 5 is the generalized section according to the compound row of copper aluminium of the compound row's of copper aluminium of the present invention production method manufacturing;
Fig. 6 is the floor map in continuous hot-rolling mill one embodiment in the compound row's of the copper aluminium of the present invention production method;
Fig. 7 is the sketch map of an embodiment of automatic shaping equipment in the compound row's of the copper aluminium of the present invention production method;
Fig. 8 is the sketch map of the whole roller of an opposition in the automatic shaping equipment shown in Figure 7.
Embodiment
Below will combine each execution mode shown in the drawings to describe the present invention.But these execution modes do not limit the present invention, and the conversion on the structure that those of ordinary skill in the art makes according to these execution modes, method or the function all is included in protection scope of the present invention.
One embodiment of ginseng Fig. 1, Fig. 3, the compound row's of a kind of copper aluminium shown in Figure 5 production method.At first copper pipe is carried out end machining (step 601); Be processed into the special-shaped copper pipe 20 of end sealing, simultaneously, remelting become molten aluminum liquid with aluminium ingot fusing (step 602); Reach pourable pouring temperature; And be incubated (step 603), as preferable embodiment of the present invention, the pouring temperature of aluminium liquid is controlled between 680 ℃ to 750 ℃ during cast.Carry out semi-continuous casting (step 604) then, described semi-continuous casting is that the aluminium liquid in the said temperature scope is poured into a mould in the special-shaped copper pipe 20 of into described end sealing, and cools off, and forms copper aluminium composite ingot 50.In this embodiment, the molten aluminum liquid temperature is controlled between 680 ℃ to 750 ℃, when molten aluminum liquid is poured into a mould into special-shaped copper pipe 20; When aluminium liquid contacts with solid-state copper; Because the good capacity of heat transmission of copper, the inwall of special-shaped copper pipe 20 is the state that is in a fusion in fact, just forms a copper liquid phase layer; Interfacial reaction takes place on the copper surface; Copper and the counterdiffusion mutually of aluminium atom, and in two kinds of metals, form diffusion layer, the local melting through solid on the boundary layer and the Physical Metallurgy process of atom diffusion have realized the metallurgical binding of compound interface.If temperature of aluminum liquid is lower than 680 ℃; Molten aluminum liquid will soon solidify, inwall that can't the molten copper layer, and after the temperature of molten aluminum liquid is higher than 750 ℃; Can form compound between the copper aluminium; The interfacial combined function and the conductivity that are unfavorable for compound row also can be owing to too high temperature maybe fusion puncture the tube wall of special-shaped copper pipe 20, cause unnecessary risk and loss.In cast or afterwards, all can cool off forming copper aluminium composite ingot 50 copper pipe, back extended meeting according to the compound row's of copper aluminium that will produce specification requirement come worked copper aluminium composite ingot 50.About the mode of cooling, will do detailed description below.
Subsequently, cooled copper aluminium composite ingot 50 is admitted to the atmosphere protection step heating-furnace, is heated to a suitable rolling temperature, and in this execution mode, rolling temperature is controlled between 300 ℃~548 ℃.In this embodiment; Copper aluminium composite ingot 50 heats (step 605) in being full of inert gas and reducing atmosphere; Can prevent that in the heating process, copper aluminium composite ingot 50 is oxidized, guarantee the glossiness of copper aluminium composite ingot 50 and good electric conductivity.Next begin hot continuous rolling (step 606), as previously mentioned, before the entering milling train, the temperature of copper aluminium composite ingot 50 is controlled between 300 ℃~548 ℃.Described hot continuous rolling (step 606) is that the copper aluminium composite ingot 50 after the above-mentioned heating is somely reached the compound row of copper aluminium that specification requires to the plain-barreled roll of alternate setting and the continuous hot-rolling mill of edger roll to process through being provided with.In the production of reality; Possibly also can there be a series of defectives such as warpage in the compound row of copper aluminium who makes through above-mentioned steps; Be that glacing flatness and linearity exist certain problem; So also need the compound row of copper aluminium is carried out further automatic shaping (step 607), to eliminate this a series of possible defectives.About automatic shaping equipment, detailed description will be done in back literary composition.
The compound row of copper aluminium with gained carries out scale sawing (step 608) to satisfy the needed length requirement of specification then.Subsequently, the compound row of copper aluminium of gained is carried out surface finish (step 609) again,, make product surface essence rugosity and brightness all reach requirement according to adopting wire brush, thousand pages of wheels, nylon bruss successively from slightly throwing the smart order polishing wheel of throwing.Qualification rate in order to ensure product; Also need the compound row of copper aluminium who carried out surface finish is carried out online detection (step 610); As detect the outside and inner defective that exists of product respectively through eddy current inspection equipment and ultrasound examination equipment; And faulty goods chosen, through defective locations color spray mark compound row, and through sound and light alarm signal prompt related personnel.At last the compound row of copper aluminium is carried out passivation oven dry (step 611); Said passivation oven dry (step 611) principle is the electrode potential that changes the copper top layer through passivating solution; Make it not possess the condition of electrochemical reaction; The surface is difficult for oxidation, and the compound row of copper aluminium just can pack and put (step 612) in storage then.
Ginseng Fig. 2, Fig. 3 and shown in Figure 4, in the embodiment of the present invention, insulation realizes that through pressure pouring holding furnace 10 said pressure pouring holding furnace comprises charging aperture 11 and the valve 12 that can cooperate with charging aperture 11.Described charging aperture 11 is used for being injected in the air pressure holding furnace 10 through processing such as removal of impurities molten aluminum liquid later, then through valve 12 tight seal charging apertures 11.Pouring temperatures in the pressure pouring holding furnace 10 are to heat and keep through the heating rod 15 that sets within it; And also be provided with temperature-measuring element 17 on the pressure pouring holding furnace 10; Temperature in the holding furnace of detected air pressure cast in real time; And pass to controller, so that making, controller control heating rod 15 keeps pouring temperature in the holding furnace.Air pressure holding furnace 10 also is provided with air inlet 13 and gas vent 14; Compressed air can feed in the holding furnace through this air inlet 13; So that molten aluminum liquid is extruded through stalk 16, molten aluminum liquid rises through stalk 16, through graphite pouring nozzle 18 aluminium liquid is injected special-shaped copper pipe 20.Behind special-shaped copper pipe 20 casting completes; Air inlet 13 is closed, and gas vent 14 is opened, pressure release in the pressure pouring holding furnace 10; But and incomplete venting; Only need to guarantee that molten aluminum liquid can not get final product from the pouring nozzle outflow, when the special-shaped copper pipe 20 of root needs cast down, repeat above-mentioned casting process again.In embodiment of the present invention; The inside diameter ranges of graphite pouring nozzle 18 is 4~15mm; Can guarantee that like this molten aluminum liquid passes through graphite pouring nozzle 18 smoothly with preferable speed; Neither can be owing to the graphite pouring nozzle 18 internal diameters 181 narrow aluminium liquid poring rates that make are slow excessively, can be owing to graphite pouring nozzle 18 internal diameters 181 are not excessive yet, and limited the internal diameter size of special-shaped copper pipe.In addition, the material that pouring nozzle adopted is not limited to graphite, also can adopt other nonmetal exotic material, like carborundum (SiC), alundum (Al (Al2O3), alumina silicate etc.
Ginseng Fig. 3 and shown in Figure 5, special-shaped copper pipe 20 is fixing through disk casting machine 30 in the embodiment of the present invention.Said disk casting machine 30 is provided with several work stations; Be fixed with a special-shaped copper pipe 20 on each station; Preferably; Said station is made as 8, and said disk casting machine 30 makes the special-shaped copper pipe 20 on each station forward pouring position to through rotation, realizes the cast of aluminium liquid to align with said graphite pouring nozzle 18; Said each station is provided with the fixture 31 fixing positions that keep special-shaped copper pipe.In this embodiment, also be provided with a pair of clamping limb 32 be used for further being fixedly clamped special-shaped copper pipe 20 and make the center line alignment of the center line and the graphite pouring nozzle 18 of special-shaped copper pipe 20, guarantee the accuracy of casting process.Also be provided with first water-cooling system 321 on the clamping limb 32 simultaneously, cool off the first time to special-shaped copper pipe when being used for the cast of aluminium liquid.Described first water-cooling system 321 can comprise a plurality of cold water pipes, by servo valve control, in order to pour into a mould when aluminium liquid in the process that liquid level rises gradually behind the into special-shaped copper pipe 20, progressively opens described a plurality of cold water pipe.In this process, the cooling rate scope that is cast with the special-shaped copper pipe 20 of aluminium liquid is controlled at 20 ℃~25 ℃/s, to guarantee good casting usefulness.Behind casting complete, disk casting machine 30 can turn to next station, is positioned at second water-cooling system 33 of this station this moment, opens the special-shaped copper pipe of casting complete is proceeded cooling like spray equipment.
Ginseng Fig. 6 and shown in Figure 7; The logarithm of plain-barreled roll and edger roll preferably is made as 5 pairs and 4 pairs in the embodiment of the present invention continuous hot-rolling mill; The alternate setting of plain-barreled roll and edger roll, plain-barreled roll depress copper aluminium composite ingot 50 is prolonged in the longitudinal direction and Width on stretch i.e. control thickness size H; The size w of edger roll control copper aluminium composite ingot 50 on Width.Copper aluminium composite ingot 50 is being 50%~78% through overall reduction scope before and after the continuous hot-rolling mill.Simultaneously; In this embodiment; It is 35%~50%, 15%~30%, 10%~25%, 5%~20%, 3%~15% that the drafts scope of copper aluminium composite ingot 50 order through plain-barreled roll 41, plain-barreled roll 42, plain-barreled roll 43, plain-barreled roll 44, plain-barreled roll 45 front and back sets gradually, said drafts be copper aluminium composite ingot 50 the decrease through thickness H behind the corresponding plain-barreled roll each time than on ratio through the thickness H before the described plain-barreled roll.Because in hot continuous rolling 606, along with the carrying out of processing, and the progressively reduction of temperature, the resistance of deformation of copper aluminium composite ingot 50 progressively increases, so, through 45 the drafts of reduction step by step scope is set from plain-barreled roll 41 to plain-barreled roll, can guarantee good effect of rolling.In addition, to through the required different drafts requirements that reach before and after the different plain-barreled rolls, embodiment of the present invention is provided with the radius of plain-barreled roll 41 greater than plain-barreled roll 42, and plain-barreled roll 42 is greater than the radius of plain-barreled roll 43, and the radius of plain-barreled roll 44 and plain-barreled roll 45 then is set to consistent with plain-barreled roll 43; Certainly, also can progressively reduce the radius of each plain-barreled roll according to the drafts demand that constantly diminishes.The compound speed that comes plain-barreled roll 45 exits of said copper aluminium is 1~1.5m/s; Simultaneously; Identical through the volume between every pair of plain-barreled roll roll gap in the unit interval in order to ensure copper aluminium composite ingot 50, need be the basis with above-mentioned condition, confirm that each rotating speed to plain-barreled roll distributes; Then, according to the requirement of muzzle velocity, confirm each rotating speed according to the radius setting of different plain-barreled rolls again to plain-barreled roll.As preferred embodiment, every pair of plain-barreled roll also can finely tune 1%~5% with being selected on the basis of above-mentioned definite rotating speed, comes each to there being certain power that parts a little between the plain-barreled roll to guarantee that copper aluminium is compound.For example, copper aluminium composite ingot 50 passed through plain-barreled roll at 41,42,43 o'clock, and the rotating speed of plain-barreled roll 42,43 is just finely tuned, and guarantees that the compound row of 42,43 of plain-barreled roll 41,42 and plain-barreled rolls has certain power that parts a little.
Below in conjunction with concrete example drafts and plain-barreled roll speed are described.For example, the compound billet specification of copper aluminium is 26mm*65mm, and 26mm is the thickness of copper aluminium composite ingot, and 65mm is the width of copper aluminium composite ingot; Trimmed size is 10mm*80mm, and 10mm is the compound row's of copper aluminium a thickness, and 80mm is the compound row's of copper aluminium a width; Then the drafts of each time of plain-barreled roll is respectively: 26mm → 15.6mm → 12.9mm → 11.6mm → 10.6mm → 10mm, and each plain-barreled roll speed designs is: 0.684 m/s, 0.853 m/s; 0.935 m/s, 1.02 m/s, 1.08 m/s.Again for example, the compound billet specification of copper aluminium is 32 mm *, 108 mm, and 32 mm are the thickness of the compound billet of copper aluminium; 108 mm are the width of the compound billet of copper aluminium, and trimmed size is 10 mm *, 120 mm, and 10 mm are the compound row's of copper aluminium thickness; 120 mm are the compound row's of copper aluminium width, and then the drafts of each time of plain-barreled roll is respectively: 32 mm → 18.72 mm → 14.04 mm → 12.1 mm → 10.8 mm → 10 mm, and each plain-barreled roll speed designs is: 0.598 m/s; 0.792 m/s; 0.912 m/s, 1.02 m/s, 1.1 m/s.Should be appreciated that the logarithm of plain-barreled roll of the present invention and edger roll can be set to different quantity according to different actual demands, this embodiment is just introduced a preferable engineering construction example, and unrestricted.
Ginseng Fig. 8 and automatic shaping equipment 70 shown in Figure 9.In this execution mode, automatic shaping equipment 70 comprises a mounting system 75, is arranged on the roller system on the mounting system 75 and is used for the drive system that driven roller is a system.Wherein, mounting system 75 comprises some upright supports and is arranged on the brace summer on the support.The roller system is arranged on the top of brace summer, and it comprises smooth roller 71 and at least one pair of upright whole roller 72 that vertically is provided with that at least one pair of lies low and is provided with.Wherein smooth roller 71 is used for regulating the compound row's of copper aluminium glacing flatness, and thirty years of age whole roller 72 is used for regulating the compound row's of copper aluminium linearity.As preferred embodiment, smooth roller 71 comprises 8 pairs respectively with upright whole roller 72, and interlaced setting above brace summer.Through this set, the compound row of copper aluminium by milling train comes out through centralising device centering, then through after the 8 flat 8 upright shapings, can make the compound row's of copper aluminium glacing flatness and linearity reach standard-required.Each upright whole roller 72 vertically is provided with first groove 721 and second groove 722 of radial depressions, wherein and first groove different with the width of the groove position of second groove, to adapt to the compound row of copper aluminium of different size respectively.Drive system is used to drive smooth roller 71 and upright whole roller 72 rotary works, and it comprises smooth roll drive motor 73 and upright whole roll drive motor 74.Automatic shaping equipment 70 also comprises the emulsion circulatory system 78, is used for reducing the friction between compound row of shaping process copper aluminium and flat, the upright whole roller, guarantees compound row's surface condition.
In this execution mode; Smooth roller of 8 couple that above-mentioned automatic shaping equipment comprises and the whole roller of 8 opposition; The shaping temperature of said automatic shaping equipment is 100~300 ℃; Smooth roller gap is set according to compound row's specification and template situation with upright whole roller opening degree (shown in the arrow among Fig. 8), and wherein the amount of compression 0~0.3mm of smooth roller is adjustable, and the amount of compression 0~3mm of upright whole roller is adjustable.Through such setting, can make the compound row's of copper aluminium glacing flatness and linearity all reach standard-required, and save man-hour, make its shaping speed adjustable with last next procedure coupling, the efficient height, realize automated production fully.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and under the situation that does not deviate from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore; No matter from which point; All should regard embodiment as exemplary; And be nonrestrictive, scope of the present invention is limited accompanying claims rather than above-mentioned explanation, therefore is intended to the implication of the equivalents that drops on claim and all changes in the scope are included in the present invention.Should any Reference numeral in the claim be regarded as limit related claim.
In addition; Describing according to execution mode though should be appreciated that this specification, is not that each execution mode only comprises an independently technical scheme; This narrating mode of specification only is for clarity sake; Those skilled in the art should make specification as a whole, and the technical scheme among each embodiment also can form other execution modes that it will be appreciated by those skilled in the art that through appropriate combination.

Claims (10)

1. the compound row of copper aluminium production method is characterized in that, this method may further comprise the steps:
The molten aluminum liquid that temperature is controlled at pouring temperature is injected special-shaped copper pipe, and cooling, to form copper aluminium composite ingot;
Heat said copper aluminium composite ingot to rolling temperature; And the some continuous hot-rolling mills to plain-barreled roll and edger roll of the copper aluminium composite ingot after will heating through including alternate setting to be to process the compound row of copper aluminium, and said copper aluminium composite ingot is 50%~78% through the overall reduction scope before and after the continuous hot-rolling mill.
2. production method according to claim 1 is characterized in that: when plain-barreled roll was 5 pairs, copper aluminium composite ingot order was followed successively by 35%~50%, 15%~30%, 10%~25%, 5%~20%, 3%~15% through the drafts scope before and after every pair of plain-barreled roll.
3. production method according to claim 1; It is characterized in that: identical in the said copper aluminium composite ingot unit interval through the volume between the roll gap of every pair of plain-barreled roll; Said some rotating speed branches to plain-barreled roll are equipped with this as the basis, and confirm rotating speed according to copper aluminium composite ingot through last speed to the plain-barreled roll outlet; Said muzzle velocity scope is 0.3~2m/s, can adjust according to throughput requirements.
4. production method according to claim 3 is characterized in that: the rotating speed of said every pair of plain-barreled roll also can finely tune 1%~5% with being selected on the basis of above-mentioned definite rotating speed, between each is to plain-barreled roll, has certain power that parts a little to guarantee copper aluminium composite ingot.
5. production method according to claim 1 is characterized in that: said molten aluminum liquid realizes the control of pouring temperature in the pressure pouring holding furnace, and through injecting gas in said holding furnace, so that the aluminium hydraulic pressure in the holding furnace is come out to realize cast; Said pouring temperature range is 680 ℃~750 ℃.
6. production method according to claim 5 is characterized in that: said holding furnace is provided with pouring nozzle, and molten aluminum liquid is injected special-shaped copper pipe through said pouring nozzle, and the inside diameter ranges of said pouring nozzle is 4~15mm.
7. production method according to claim 6 is characterized in that: said special-shaped copper pipe is arranged on the disk casting machine, and said disk casting machine has several work stations, fixedly installs a special-shaped copper pipe on each station; Said disk casting machine makes the special-shaped copper pipe on each station forward pouring position to through rotation, realizes the cast of aluminium liquid to align with said graphite pouring nozzle.
8. production method according to claim 7; It is characterized in that: when special-shaped copper pipe forwards pouring position to; A pair of clamping limb clamps and remains on pouring position with said special-shaped copper pipe; Said clamping limb is provided with first water-cooling system and when aluminium liquid is poured into a mould, to open said special-shaped copper pipe is cooled off, and the cooling rate scope is 10 ℃~50 ℃/s; When the special-shaped copper pipe of casting complete changed next station over to, second water-cooling system that is positioned at this station was opened the special-shaped copper pipe of casting complete is proceeded cooling.
9. production method according to claim 1 is characterized in that: said copper aluminium composite ingot has the heating furnace of inert gas and reducing atmosphere to be heated to rolling temperature through injection, and said rolling temperature scope is 300 ℃~548 ℃.
10. production method according to claim 1 is characterized in that: this method also comprises glacing flatness and the linearity of regulating the compound row of copper aluminium through automatic shaping equipment; The shaping temperature of said automatic shaping equipment is 100~300 ℃, and smooth roller gap is set according to compound row's specification and template situation with upright whole roller opening degree, and wherein the amount of compression 0~0.3mm of smooth roller is adjustable, and the amount of compression 0~3mm of upright whole roller is adjustable.
CN2011102240487A 2011-08-05 2011-08-05 Method for producing copper-aluminum composite bus bar Pending CN102651258A (en)

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CN108085666A (en) * 2017-12-08 2018-05-29 烟台孚信达双金属股份有限公司 A kind of method of Copper-Aluminum compound row surface passivation

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CN101633105A (en) * 2008-07-22 2010-01-27 北京华北华铜电气有限公司 Process and equipment for producing copper-aluminum compound busbar
CN101585141A (en) * 2009-07-08 2009-11-25 华鹏集团有限公司 Composite stock compression molding process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106345746A (en) * 2016-09-29 2017-01-25 张家港市港威超声电子有限公司 Energy-saving and environmentally friendly production line for automatically cleaning and drying composite copper-aluminum bars and cleaning and drying method thereof
CN108085666A (en) * 2017-12-08 2018-05-29 烟台孚信达双金属股份有限公司 A kind of method of Copper-Aluminum compound row surface passivation

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Application publication date: 20120829