CN106282651A - A kind of copper silver rare-earth alloy superfine wire and production method thereof - Google Patents
A kind of copper silver rare-earth alloy superfine wire and production method thereof Download PDFInfo
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- CN106282651A CN106282651A CN201610827707.9A CN201610827707A CN106282651A CN 106282651 A CN106282651 A CN 106282651A CN 201610827707 A CN201610827707 A CN 201610827707A CN 106282651 A CN106282651 A CN 106282651A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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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
- H01B1/026—Alloys based on copper
Abstract
The invention provides a kind of copper silver rare-earth alloy superfine wire, and the method producing described copper silver rare-earth alloy superfine wire.Described copper silver rare-earth alloy superfine wire includes following component: 1 ~ 25wt% silver, and 0.01 ~ 0.04wt% yttrium, surplus is copper and inevitable impurity；Or 1 ~ 25wt% silver, 0.10 ~ 0.30 wt% lanthanum, surplus is copper and inevitable impurity；Or 1 ~ 25wt% silver, 0.01 ~ 0.02 wt% yttrium, 0.05 ~ 0.15wt% lanthanum, surplus is copper and inevitable impurity.Described method is by the trace rare-earth added; play purification tissue, crystal grain thinning, the effect of raising material combination property; and use anaerobic production technology and non-vacuum continuous fusion-cast method; can be in continuous charging melting under inert gas shielding; it is continuously cast into copper silver rare-earth alloy bar, it is achieved produce continuously；And, the copper silver rare-earth alloy bar obtained, through follow-up deep processing, smooth and easy can be drawn into the wire rod of diameter of phi≤0.05mm, and final superfine wire product tissue is pure uniformly, oxygen content is low, tensile strength is higher, elongation at break is bigger, it is not easy to broken string.
Description
Technical field
The invention belongs to high-end electronic Material Field, be specifically related to a kind of copper silver rare-earth alloy superfine wire, and produce institute
The method stating copper silver rare-earth alloy superfine wire.
Background technology
Kufil is owing to having the characteristic of high intensity and high connductivity concurrently, and has excellent bending, torsion, resisting fatigue, resistance to
The combination properties such as heat, therefore, utilize Kufil conductor to be processed into ultra-fine wire rod and are widely used in Ultrathin coaxial cable, heat-resisting
Electric wire, medical electric wire, audio wire and cable, small-sized vibrations coil, miniature motor etc..
Along with making rapid progress of science and technology, the information terminal product such as network, space equipment and armarium is to performance
Requirement more and more higher, and its volume is more and more less, and weight is increasingly lighter, so the conductor material of correspondence also should possess excellent
Combination property, and there is requirement and the trend in further thin footpath.It follows that this just requires that associated alloys material both had
Standby performance characteristics, possesses again excellent machinability；And Kufil exactly can meet this requirement to a certain extent.
But, when being drawn into Φ less than 0.05 alloy superfine wire, often there is the requirement of harshness: both required the alloy in Kufil
Content is high and uniform, requires that again impurity content is low, otherwise there will be the situation frequently that breaks, thus can not realize the conjunction of long length
Gold superfine wire preparation and application.
In the prior art, CN103572184A discloses the preparation method of a kind of high-strength silver-copper alloy material, this conjunction
Gold copper-base alloy is according to mass fraction silver content 15-20%, and surplus is copper, and the manufacture method of this alloy material specifically includes that 1) chemistry one-tenth
Set up meter separately；2) Kufil rod is prepared in vacuum melting；3) vacuum consumable electrode refined copper silver alloy bar is used；4) hot extrusion；
5) heat treatment；6) drawing i.e. prepares final products, although obtained Kufil material can have the highest intensity and excellent
Different conductivity, but, the method can not realize the continuous production of long length Kufil gold thread, the most not mentioned can be drawn into super
Thin wire and still keep high intensity.
And for example, CN104353696A discloses a kind of fine Kufil gold thread manufacture method, the manufacture method of this alloy wire
Including: 1) smelting of Cu-Ag alloy blank and continuous casting；2) drawing of Kufil bar；3) at the intermediate heat of Cu-Ag alloy wire
Reason；4) multiple tracks is drawn into fine Kufil gold thread.Wherein the smelting of Cu-Ag alloy blank includes with continuous casting manufacture method: a) true
Copper silver intermediate alloy is manufactured under the conditions of empty melting+gas shield；B) by copper silver intermediate alloy in vacuum melting+gas shield condition
Lower manufacture Cu-Ag alloy blank；C) Cu-Ag alloy blank is cast under conditions of vacuum melting+gas shield Kufil
Bar.But, this smelts complicated with continuous casting manufacturing approach craft, and cost is high, though casting continuously can be realized, can not realize adding continuously
Material, therefore can only property performance period produce；Further, whole technical process does not roll or extrusion process, thus causes following process
During as-cast structure can not be completely eliminated, cause manufacture product mechanical performance poor.
At present upward-casting process founding can produce the Kufil of high alloy content, on the one hand relatively big due to burner hearth area,
Produce the adjustment conversion of high alloy content Kufil dumb, on the other hand typically use refractory material to build up due to burner hearth, because of
This is during product melting and casting, and product easily occurs that refractory material is mingled with, and result cannot continuous drawing superfine wire.
Additionally continuous casting and rolling method also founding can produce the Kufil of high alloy content, due to its body of heater much larger than on draw even
Casting stove, thus it is more dumb to adjust conversion when producing high alloy content, still further aspect is owing to typically using hot rolling, oxygen content
Height, therefore easily generates hard crisp copper oxide, is unfavorable for follow-up deep processing.
Therefore, a kind of anaerobic production technology, the high property ultra-fine efficiently to produce diameter are designed the most scientifically and rationally
Can Kufil gold thread be one of emphasis of currently researching and developing of those skilled in the art.
Summary of the invention
In order to solve above-mentioned technical problem present in prior art, it is desirable to provide a kind of high performance copper silver is dilute
Soil alloy superfine wire, the trace rare-earth wherein added, plays purification tissue, crystal grain thinning, the work of raising material combination property
With.To achieve these goals, inventor have developed a kind of anaerobic production technology, and it uses non-vacuum continuous fusion-cast method, energy
Enough continuous charging meltings under inert gas shielding, are continuously cast into copper silver rare-earth alloy bar, thus realize producing continuously；And
And, the copper silver rare-earth alloy bar obtained, through follow-up deep processing, smooth and easy can be drawn into the wire rod of diameter of phi≤0.05mm, finally
Product has the characteristics such as tissue is pure uniformly, oxygen content is low, intensity is high.
Therefore, a first aspect of the present invention, it is provided that a kind of copper silver rare-earth alloy superfine wire, it includes following component: 1 ~
25wt% silver, 0.01 ~ 0.04wt% yttrium, surplus is copper and inevitable impurity；Or 1 ~ 25wt% silver, 0.10 ~ 0.30 wt%
Lanthanum, surplus is copper and inevitable impurity；Or 1 ~ 25wt% silver, 0.01 ~ 0.02 wt% yttrium, 0.05 ~ 0.15wt% lanthanum, surplus
For copper and inevitable impurity.
Preferably, above-mentioned copper silver rare-earth alloy superfine wire includes that following component: 2 ~ 6wt% is silver-colored, and 0.012 ~ 0.03wt% yttrium is remaining
Amount is copper and inevitable impurity；Or 2 ~ 6wt% silver, 0.12 ~ 0.25 wt% lanthanum, surplus is copper and inevitable impurity；
Or 2 ~ 6wt% silver, 0.012 ~ 0.015 wt% yttrium, 0.06 ~ 0.12wt% lanthanum, surplus is copper and inevitable impurity.
Preferably, the diameter of phi≤0.05mm of above-mentioned copper silver rare-earth alloy superfine wire.
Additionally, a second aspect of the present invention, it is provided that a kind of method producing above-mentioned copper silver rare-earth alloy superfine wire, specifically
Comprise the following steps:
(1) founding copper silver rare-earth alloy bar, including:
(1-1) vaccum sensitive stove is used to prepare pure copper silver rare-earth alloy blank；
(1-2) antivacuum casting furnace is used to prepare copper silver rare-earth alloy bar continuously；
(2) the copper silver rare-earth alloy bar using three rollers or the further milling step of two-roller mill (1) to prepare, obtains copper silver rare earth and closes
Gold rolled bar；
(3) described copper silver rare-earth alloy rolled bar is drawn greatly, be drawn into copper silver rare-earth alloy thick line；
(4) described copper silver rare-earth alloy thick line is carried out intermediate heat-treatment；
(5) the copper silver rare-earth alloy thick line through intermediate heat-treatment being carried out finish draw, final prepared described copper silver rare-earth alloy surpasses
Fine rule.
Preferably, in the above-mentioned methods, step (1-1) including:
Copper, silver, rare earth are proportionally added in the high purity graphite crucible of described vaccum sensitive stove, are evacuated to vacuometer reading and reach
To 10-1Pa and stable after, be gradually heating to 1200-1300 DEG C, treat aluminium alloy to start strongly and splash, stand 20-30 minute, to go
Except impurity such as O and S in raw material；It is cast into copper silver rare-earth alloy blank the most under vacuum conditions；
It addition, further preferably use following raw material in this step (1-1): the self-contained Cu >=99.95wt% of copper source is electrolysed
Copper, described silver is derived from containing Ag >=99.95wt% filamentary silver, described rare earths material content: Y >=99.9 wt %, La >=99 wt %；Real
The pure element quality of 100wt% should be converted into when border feeds intake, then meet mentioned component ratio range with pure element quality and carry out
Feed intake.
In this step (1-1), further preferably use intermediate frequency vaccum sensitive stove to carry out melting, alloy in blank can be made
Composition is more uniform；Use vacuum melting, can effectively remove the part of impurity elements in raw material.The addition of appropriate rare earth element
It is intended that next step (1-2) continuous fusion-cast effective purifying copper silver alloy matrix, simultaneously work as the effect of crystal grain thinning, thus improve
The combination property of material product；Rare earth element can not add excess, otherwise can affect the mobility of Kufil liquid, makes casting bar
Surface quality declines, and ultimately results in the adverse effect to product combination property；Rare earth element can not add very few simultaneously, otherwise
Do not have intended effect and effect.
Preferably, in the above-mentioned methods, step (1-2) including:
The crucible of described antivacuum casting furnace is high purity graphite crucible, adopts and is heated by resistive high purity graphite crucible, described high-purity stone
Ink crucible is provided with blowning installation, and is made up of 3 chambeies, respectively melt chamber, incubation cavity and casting cavity, logical between chamber and chamber
Undercurrent hole connection bottom crossing；During production, the internal each chamber of high purity graphite crucible is connected with high pure protective gas, and crucible periphery uses resistance
Heating devices heat, crucible and a whole set of heating dress are placed in burner hearth, and burner hearth is airtight with the external world, use and protect height during production in burner hearth
Pure gas is protected, to prevent graphite from high temperature aoxidizing.Wherein, above-mentioned high pure protective gas be high pure nitrogen (99.999% with
On) or argon (more than 99.999%)；It is passed through high pure protective gas in crucible, stirring action can be played, moreover it is possible to realize certain journey
The deoxygenation of degree or deoxidation effect.Wherein, fusion-casting process can be selected for horizontal casting or continuous up-casting.
The specified operational procedure of step (1-2) is as follows: by described antivacuum casting furnace with the programming rate of 90-150 DEG C/h
Being gradually heating to 1250-1300 DEG C, i.e. casting temperature, it is preferably 1270-1290 DEG C；Open described blowning installation, by high-purity
Nitrogen or argon flow amount are adjusted to 1-2 liter/min；In described high purity graphite crucible melting chamber, gradually add copper silver rare-earth alloy base
Material, after molten bath is formed, covers graphite flakes on melt chamber, incubation cavity, casting cavity, and cladding thickness is 20-40mm；Then enter
Row continuous charging, after aluminium alloy reaches crucible safe capacity, is incubated 40-60 minute, scarfing cinder；Then, cast continuously Φ=
The copper silver rare-earth alloy bar of 12.5-20mm, casting speed 400-800mm/min, pitch 3-5mm, while casting continuously, root
Feed in melt chamber continuously according to alloy liquid level and temperature.In order to keep certain static pressure, alloy liquid level wants phase
To stable.
Preferably, in the step (2) of said method: use arc triangle-circle or ellipse-circular hole system, passage is put down
All lengthening coefficient 1.15-1.25, mill speeds 10-120m/min.It is further preferred that by the copper silver rare earth of Φ=12.5-20mm
Rod of metal alloy is rolled into the thin bar of Φ=6-10mm in this step (2).
Preferably, the step (3) of said method uses the draw rate of 50-300m/min, is drawn into Φ=2.6-
The copper silver rare-earth alloy thick line of 3mm.
Preferably, in the above-mentioned methods, step (4) including:
Described copper silver rare-earth alloy thick line is put in the inert gas shielding annealing furnace of forvacuum extremely-0.1MPa, and to it
In be filled with high pure nitrogen or argon, until pressure is 0.02 ~ 0.05MPa in the flue of described inert gas shielding annealing furnace, connect
And be warming up to 420-520 DEG C, be incubated 6-8 hour, finally with stove air cooling to room temperature.
Preferably, in the above-mentioned methods, step (5) including:
By the copper silver rare-earth alloy thick line through intermediate heat-treatment first with the draw rate of 400-800m/min in be pulled to Φ=0.8-
1.2mm, passage draft 15-20%；Again with the little Φ=0.15-0.25mm that is pulled to of draw rate of 500-1000m/min, passage subtracts
Face rate 8-13%；Finally carefully it is pulled to Φ=0.025-0.05 mm, passage draft 7-with the draw rate of 800-1500m/min
10%, i.e. prepare described copper silver rare-earth alloy superfine wire.It is further preferred that if it is necessary, also can in draw after, little draw it
Intermediate heat-treatment process of front increase.
Production method step provided by the present invention is simple, it is easy to operation, is suitable to large-scale industrial production；Further, adopt
The copper silver rare-earth alloy superfine wire oxygen content prepared by production method provided by the present invention is lower, and impurity content significantly reduces,
The superfine wire of this drawing is not easy broken string, has conductivity up to standard and higher tensile strength；Therefore, of the present invention
Copper silver rare-earth alloy superfine wire and production method be respectively provided with superior using value and good market potential.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further elaborated, but the present invention is not limited to following embodiment party
Formula.
First aspect provides a kind of copper silver rare-earth alloy superfine wire, including following component:
1 ~ 25wt% silver, 0.01 ~ 0.04wt% yttrium, surplus is copper and inevitable impurity；Or 1 ~ 25wt% silver, 0.10 ~ 0.30
Wt% lanthanum, surplus is copper and inevitable impurity；Or 1 ~ 25wt% silver, 0.01 ~ 0.02 wt% yttrium, 0.05 ~ 0.15wt% lanthanum,
Surplus is copper and inevitable impurity.
In a preferred embodiment, described copper silver rare-earth alloy superfine wire includes following component:
2 ~ 6wt% silver, 0.012 ~ 0.03wt% yttrium, surplus is copper and inevitable impurity；Or 2 ~ 6wt% silver, 0.12 ~ 0.25
Wt% lanthanum, surplus is copper and inevitable impurity；Or 2 ~ 6wt% silver, 0.012 ~ 0.015 wt% yttrium, 0.06 ~ 0.12wt% lanthanum,
Surplus is copper and inevitable impurity.
In a preferred embodiment, the diameter of phi≤0.05mm of described copper silver rare-earth alloy superfine wire.
Second aspect provides a kind of method of copper silver rare-earth alloy superfine wire produced described in first aspect present invention, bag
Include following steps:
(1) founding copper silver rare-earth alloy bar, including:
(1-1) vaccum sensitive stove is used to prepare pure copper silver rare-earth alloy blank；
(1-2) antivacuum casting furnace is used to prepare copper silver rare-earth alloy bar continuously；
(2) the copper silver rare-earth alloy bar using three rollers or the further milling step of two-roller mill (1) to prepare, obtains copper silver rare earth and closes
Gold rolled bar；
(3) described copper silver rare-earth alloy rolled bar is drawn greatly, be drawn into copper silver rare-earth alloy thick line；
(4) described copper silver rare-earth alloy thick line is carried out intermediate heat-treatment；
(5) the copper silver rare-earth alloy thick line through intermediate heat-treatment being carried out finish draw, final prepared described copper silver rare-earth alloy surpasses
Fine rule.
In a preferred embodiment, step (1-1) including:
Copper, silver, rare earth are proportionally added in the high purity graphite crucible of described vaccum sensitive stove, are evacuated to vacuometer reading and reach
To 10-1Pa and stable after, be gradually heating to 1200-1300 DEG C, treat aluminium alloy to start strongly and splash, stand 20-30 minute, then
It is cast into copper silver rare-earth alloy blank under vacuum conditions by graphite casting mould.
In a preferred embodiment, step (1-2) including:
Adopting and be heated by resistive high purity graphite crucible, described high purity graphite crucible is provided with blowning installation, and is made up of 3 chambeies,
It is respectively melt chamber, incubation cavity and casting cavity, is connected by undercurrent hole, bottom between chamber with chamber；By described antivacuum casting furnace by
Gradually it is warming up to 1250-1300 DEG C, opens described blowning installation, high pure nitrogen or argon flow amount are adjusted to 1-2 liter/min；Gradually
Copper silver rare-earth alloy blank is added, after molten bath is formed, in melt chamber, incubation cavity, casting described high purity graphite crucible melting chamber
Make and on chamber, cover graphite flakes；Then carrying out continuous charging, after aluminium alloy reaches crucible safe capacity, insulation 40-60 divides
Clock, scarfing cinder；Then, the copper silver rare-earth alloy bar of Φ=12.5-20mm, casting speed 400-800mm/min, pitch are cast continuously
3-5mm, while casting continuously, feeds continuously according to alloy liquid level and temperature in melt chamber.
In a preferred embodiment, in step (2): use arc triangle-circle or ellipse-circular hole system, passage is put down
All lengthening coefficient 1.15-1.25, mill speeds 10-120m/min.
In a preferred embodiment, step (3) uses the draw rate of 50-300m/min, is drawn into Φ=2.6-
The copper silver rare-earth alloy thick line of 3mm.
In a preferred embodiment, step (4) including:
Described copper silver rare-earth alloy thick line is put in the inert gas shielding annealing furnace of forvacuum extremely-0.1MPa, and to it
In be filled with high pure nitrogen or argon, until pressure is 0.02 ~ 0.05MPa in the flue of described inert gas shielding annealing furnace, connect
And be warming up to 420-520 DEG C, be incubated 6-8 hour, finally with stove air cooling to room temperature.
In a preferred embodiment, step (5) including:
By the copper silver rare-earth alloy thick line through intermediate heat-treatment first with the draw rate of 400-800m/min in be pulled to Φ=0.8-
1.2mm, passage draft 15-20%；Again with the little Φ=0.15-0.25mm that is pulled to of draw rate of 500-1000m/min, passage subtracts
Face rate 8-13%；Finally carefully it is pulled to Φ=0.025-0.05 mm, passage draft 7-with the draw rate of 800-1500m/min
10%, i.e. prepare described copper silver rare-earth alloy superfine wire.
Embodiment 1
Prepare copper silver yittrium alloy superfine wire:
(1) founding copper silver yittrium alloy bar, including:
(1-1) vaccum sensitive stove is used to prepare pure copper silver yittrium alloy blank:
Use the cathode copper of Cu purity 99.99wt%, the filamentary silver of Ag purity 99.99wt%, and the rare earth of Y purity 99.9 wt %
Yttrium is raw material；According to 2wt%Ag, 0.015wt%Y, surplus is copper and this proportioning of inevitable impurity, by described cathode copper,
Described filamentary silver adds in the high purity graphite crucible of intermediate frequency vaccum sensitive stove with described rare-earth yttrium, is evacuated to vacuometer reading and reaches
10-1Pa and stable after, be gradually heating to 1250 DEG C, treat aluminium alloy to start strongly and splash, stand 20-30 minute, to remove former material
The impurity such as O and S in material；It is cast into the copper silver yittrium alloy blank of Φ=50mm the most under vacuum conditions；
(1-2) antivacuum casting furnace is used to prepare copper silver yittrium alloy bar continuously:
Antivacuum casting furnace is gradually heating to 1250-1260 DEG C with the programming rate of 90 DEG C/h, opens in high purity graphite crucible
Blowning installation, high pure nitrogen (more than 99.999%) flow is adjusted to 1 liter/min；Gradually to described high purity graphite crucible melting
Add copper silver yittrium alloy blank in chamber, after molten bath is formed, melt chamber, incubation cavity, casting cavity cover graphite flakes, cover
Thickness is 30mm；Then it is continuously added to copper silver yittrium alloy blank, after aluminium alloy reaches crucible safe capacity, is incubated 50 minutes,
Scarfing cinder；Then, horizontal casting becomes the copper silver yittrium alloy bar of Φ=12.5mm, and casting speed 650mm/min, pitch 5mm, continuously
While casting, feed in melt chamber continuously in time according to alloy liquid level and temperature；
(2) the copper silver yittrium alloy bar of above-mentioned Φ=12.5mm is rolled into further through three-high mill the copper silver yittrium alloy of Φ=8mm
Rolled bar, wherein, uses arc triangle-round pass system, passage mean coefficient of elongation 1.20, mill speed 60m/min；
(3) with the draw rate of 50m/min, the copper silver yittrium alloy rolled bar of above-mentioned Φ=8mm is drawn greatly, be drawn into Φ=3mm
Copper silver yittrium alloy thick line；
(4) described copper silver yittrium alloy thick line is carried out intermediate heat-treatment:
The copper silver yittrium alloy thick line of above-mentioned Φ=3mm is put in the nitrogen protection annealing furnace of forvacuum extremely-0.1MPa, and to
Wherein it is filled with high pure nitrogen, until pressure is 0.02MPa in the flue of described nitrogen protection annealing furnace, then heats up 1 hour extremely
420 DEG C, it is incubated 6 hours, finally with stove air cooling to room temperature；
(5) by the copper silver yittrium alloy thick line through intermediate heat-treatment first with the draw rate of 500m/min in be pulled to Φ=0.9mm,
Passage draft 15%；Again with the little Φ=0.16mm that is pulled to of draw rate of 1000m/min, passage draft 13%；Finally with
The draw rate of 1500m/min is carefully pulled to Φ=0.025 mm, passage draft 7%, and final prepared described copper silver yittrium alloy is ultra-fine
Line.
Embodiment 2
Prepare copper silver lanthanum alloy superfine wire:
(1) founding copper silver lanthanum alloy bar, including:
(1-1) vaccum sensitive stove is used to prepare pure copper silver lanthanum alloy blank:
Use the cathode copper of Cu purity 99.99wt%, the filamentary silver of Ag purity 99.99wt%, and the Rare Earth Lanthanum of La purity 99 wt %
For raw material；According to 4wt%Ag, 0.12wt%La, surplus is copper and this proportioning of inevitable impurity, by described cathode copper, institute
State in the high purity graphite crucible that filamentary silver adds intermediate frequency vaccum sensitive stove with described Rare Earth Lanthanum, be evacuated to vacuometer reading and reach
10-1Pa and stable after, be gradually heating to 1250 DEG C, treat aluminium alloy to start strongly and splash, stand 20-30 minute, to remove former material
The impurity such as O and S in material；The copper silver lanthanum alloy blank of Φ=50mm it is cast into the most under vacuum conditions by graphite casting mould；
(1-2) antivacuum casting furnace is used to prepare copper silver lanthanum alloy bar continuously:
Antivacuum casting furnace is gradually heating to 1260-1270 DEG C with the programming rate of 120 DEG C/h, opens in high purity graphite crucible
Blowning installation, high-purity argon gas (more than 99.999%) flow is adjusted to 1.5 liters/min；Gradually melt to described high purity graphite crucible
Change and in chamber, add copper silver lanthanum alloy blank, after molten bath is formed, melt chamber, incubation cavity, casting cavity cover graphite flakes, covers
Lid thickness is 30mm；Then it is continuously added to copper silver lanthanum alloy blank, after aluminium alloy reaches crucible safe capacity, is incubated 50 points
Clock, scarfing cinder；Then, continuous up-casting becomes the copper silver lanthanum alloy bar of Φ=16mm, and casting speed 550mm/min, pitch 4mm, continuously
While casting, feed in melt chamber continuously in time according to alloy liquid level and temperature；
(2) the copper silver lanthanum alloy that the copper silver lanthanum alloy bar of above-mentioned Φ=16mm is rolled into Φ=8mm further through two-roller mill is rolled
Bar processed, wherein, uses ellipse-circular hole system, passage mean coefficient of elongation 1.20, mill speed 80m/min；
(3) with the draw rate of 100m/min, the copper silver lanthanum alloy rolled bar of above-mentioned Φ=8mm is drawn greatly, be drawn into Φ=
The copper silver lanthanum alloy thick line of 2.6mm；
(4) described copper silver lanthanum alloy thick line is carried out intermediate heat-treatment:
The copper silver lanthanum alloy thick line of above-mentioned Φ=2.6mm is put in the argon shield annealing furnace of forvacuum extremely-0.1MPa, and
It is filled with high-purity argon gas wherein, until pressure is 0.02MPa in the flue of described argon shield annealing furnace, then heats up 1 hour
To 450 DEG C, it is incubated 7 hours, finally with stove air cooling to room temperature；
(5) by the copper silver lanthanum alloy thick line through intermediate heat-treatment first with the draw rate of 500m/min in be pulled to Φ=1.2mm,
Passage draft 15%；Again with the little Φ=0.20mm that is pulled to of draw rate of 1000m/min, passage draft 13%；Finally with
The draw rate of 1500m/min is carefully pulled to Φ=0.03 mm, passage draft 7%, and final prepared described copper silver lanthanum alloy is ultra-fine
Line.
Embodiment 3
Prepare copper silver yttrium lanthanum alloy superfine wire:
(1) founding copper silver yttrium lanthanum alloy bar, including:
(1-1) vaccum sensitive stove is used to prepare pure copper silver yttrium lanthanum alloy blank:
Use Cu purity 99.99wt% cathode copper, the filamentary silver of Ag purity 99.99wt%, the rare-earth yttrium of Y purity 99.9 wt % and
The Rare Earth Lanthanum of La purity 99 wt % is raw material；According to 6wt%Ag, 0.012wt%Y, 0.06wt%La, surplus is that copper is with inevitable
This proportioning of impurity, by described cathode copper, described filamentary silver, described rare-earth yttrium and described Rare Earth Lanthanum add intermediate frequency vaccum sensitive stove
High purity graphite crucible in, be evacuated to vacuometer reading and reach 10-1Pa and stable after, be gradually heating to 1300 DEG C, treat alloy
Liquid starts strongly to splash, and stands 20-30 minute, to remove the impurity such as O and S in raw material；Use stone the most under vacuum conditions
Ink casting mold is cast as the copper silver yttrium lanthanum alloy blank of Φ=50mm；
(1-2) antivacuum casting furnace is used to prepare copper silver yttrium lanthanum alloy bar continuously:
Antivacuum casting furnace is gradually heating to 1270-1280 DEG C with the programming rate of 150 DEG C/h, opens in high purity graphite crucible
Blowning installation, high-purity argon gas (more than 99.999%) flow is adjusted to 2 liters/min；Gradually to described high purity graphite crucible melting
Add copper silver yttrium lanthanum alloy blank in chamber, after molten bath is formed, melt chamber, incubation cavity, casting cavity cover graphite flakes, covers
Lid thickness is 30mm；Then it is continuously added to copper silver yttrium lanthanum alloy blank, after aluminium alloy reaches crucible safe capacity, is incubated 50 points
Clock, scarfing cinder；Then, continuous up-casting becomes the copper silver yttrium lanthanum alloy bar of Φ=20mm, casting speed 450mm/min, and pitch 3mm, even
While continuous casting, feed in melt chamber continuously in time according to alloy liquid level and temperature；
(2) the copper silver yttrium lanthanum that the copper silver yttrium lanthanum alloy bar of above-mentioned Φ=20mm is rolled into Φ=8mm further through two-roller mill is closed
Gold rolled bar, wherein, uses ellipse-circular hole system, passage mean coefficient of elongation 1.20, mill speed 100m/min；
(3) with the draw rate of 150m/min, the copper silver yttrium lanthanum alloy rolled bar of above-mentioned Φ=8mm is drawn greatly, be drawn into Φ=
The copper silver yttrium lanthanum alloy thick line of 2.8mm；
(4) described copper silver yttrium lanthanum alloy thick line is carried out intermediate heat-treatment:
The copper silver yttrium lanthanum alloy thick line of above-mentioned Φ=2.8mm is put in the nitrogen protection annealing furnace of forvacuum extremely-0.1MPa,
And it is filled with high pure nitrogen wherein, until pressure is 0.02MPa in the flue of described nitrogen protection annealing furnace, then intensification 1 is little
Up to 480 DEG C, it is incubated 8 hours, finally with stove air cooling to room temperature；
(5) by the copper silver yttrium lanthanum alloy thick line through intermediate heat-treatment first with the draw rate of 700m/min in be pulled to Φ=
1.2mm, passage draft 20%；Again with the little Φ=0.25mm that is pulled to of draw rate of 900m/min, passage draft 12%；Finally
Carefully being pulled to Φ=0.04 mm, passage draft 8% with the draw rate of 1300m/min, final prepared described copper silver yttrium lanthanum alloy surpasses
Fine rule.
Comparative example 1
Prepare Kufil superfine wire:
(1) founding Kufil bar, including:
(1-1) vaccum sensitive stove is used to prepare Kufil blank:
Using the cathode copper of Cu purity 99.99wt% is raw material with the filamentary silver of Ag purity 99.99wt%, and according to 2wt%Ag, surplus is
Copper and this proportioning of inevitable impurity, by described cathode copper, the high purity graphite of described filamentary silver addition intermediate frequency vaccum sensitive stove
In crucible, it is evacuated to vacuometer reading and reaches 10-1Pa and stable after, be gradually heating to 1250 DEG C, treat that aluminium alloy starts strongly
Splash, stand 20-30 minute；It is cast into the Kufil blank of Φ=50mm the most under vacuum conditions；
(1-2) antivacuum casting furnace is used to prepare Kufil bar continuously:
Antivacuum casting furnace is gradually heating to 1250-1260 DEG C with the programming rate of 90 DEG C/h, opens in high purity graphite crucible
Blowning installation, high pure nitrogen (more than 99.999%) flow is adjusted to 1 liter/min；Gradually to described high purity graphite crucible melting
Add Kufil blank in chamber, after molten bath is formed, melt chamber, incubation cavity, casting cavity cover graphite flakes, cover thickness
Degree is 30mm；Then it is continuously added to Kufil blank, after aluminium alloy reaches crucible safe capacity, is incubated 50 minutes, scarfing cinder；
Then, horizontal casting becomes the Kufil bar of Φ=12.5mm, casting speed 650mm/min, pitch 5mm, same in casting continuously
Time, feed in melt chamber continuously in time according to alloy liquid level and temperature；
(2) the Kufil bar of above-mentioned Φ=12.5mm is rolled into further through three-high mill the Kufil rolling of Φ=8mm
Bar, wherein, uses arc triangle-round pass system, passage mean coefficient of elongation 1.20, mill speed 60m/min；
(3) with the draw rate of 50m/min, the Kufil rolled bar of above-mentioned Φ=8mm is drawn greatly, be drawn into Φ=3mm's
Kufil thick line；
(4) described Kufil thick line is carried out intermediate heat-treatment:
The Kufil thick line of above-mentioned Φ=3mm is put in the nitrogen protection annealing furnace of forvacuum extremely-0.1MPa, and to it
In be filled with high pure nitrogen, until pressure is 0.02MPa in the flue of described nitrogen protection annealing furnace, then heat up 1 hour to 420
DEG C, it is incubated 6 hours, finally with stove air cooling to room temperature；
(5) by the Kufil thick line through intermediate heat-treatment first with the draw rate of 500m/min in be pulled to Φ=0.9mm, road
Secondary draft 15%；Again with the little Φ=0.16mm that is pulled to of draw rate of 1000m/min, passage draft 13%；Last with 1500m/
The draw rate of min is carefully pulled to Φ=0.025 mm, passage draft 7%, i.e. prepares described Kufil superfine wire.
Comparative example 2
Prepare Kufil superfine wire:
(1) founding Kufil bar, including:
(1-1) vaccum sensitive stove is used to prepare Kufil blank:
Using the cathode copper of Cu purity 99.99wt% is raw material with the filamentary silver of Ag purity 99.99wt%；According to 4wt%Ag, surplus is
Copper and this proportioning of inevitable impurity, by described cathode copper, the high purity graphite of described filamentary silver addition intermediate frequency vaccum sensitive stove
In crucible, it is evacuated to vacuometer reading and reaches 10-1Pa and stable after, be gradually heating to 1250 DEG C, treat that aluminium alloy starts strongly
Splash, stand 20-30 minute；The Kufil blank of Φ=50mm it is cast into the most under vacuum conditions by graphite casting mould；
(1-2) antivacuum casting furnace is used to prepare Kufil bar continuously:
Antivacuum casting furnace is gradually heating to 1260-1270 DEG C with the programming rate of 120 DEG C/h, opens in high purity graphite crucible
Blowning installation, high-purity argon gas (more than 99.999%) flow is adjusted to 1.5 liters/min；Gradually melt to described high purity graphite crucible
Change and in chamber, add Kufil blank, after molten bath is formed, melt chamber, incubation cavity, casting cavity cover graphite flakes, cover
Thickness is 30mm；Then it is continuously added to Kufil blank, after aluminium alloy reaches crucible safe capacity, is incubated 50 minutes, clearly
Slag；Then, continuous up-casting becomes the Kufil bar of Φ=16mm, casting speed 550mm/min, and pitch 4mm, in casting continuously
Meanwhile, feed in melt chamber continuously in time according to alloy liquid level and temperature；
(2) the Kufil bar of above-mentioned Φ=16mm is rolled into further through two-roller mill the Kufil rolled bar of Φ=8mm,
Wherein, ellipse-circular hole system, passage mean coefficient of elongation 1.20, mill speed 80m/min are used；
(3) with the draw rate of 100m/min, the Kufil rolled bar of above-mentioned Φ=8mm is drawn greatly, be drawn into Φ=
The Kufil thick line of 2.6mm；
(4) described Kufil thick line is carried out intermediate heat-treatment:
The Kufil thick line of above-mentioned Φ=2.6mm is put in the argon shield annealing furnace of forvacuum extremely-0.1MPa, and to
Wherein it is filled with high-purity argon gas, until pressure is 0.02MPa in the flue of described argon shield annealing furnace, then heats up 1 hour extremely
450 DEG C, it is incubated 7 hours, finally with stove air cooling to room temperature；
(5) by the Kufil thick line through intermediate heat-treatment first with the draw rate of 500m/min in be pulled to Φ=1.2mm, road
Secondary draft 15%；Again with the little Φ=0.20mm that is pulled to of draw rate of 1000m/min, passage draft 13%；Last with 1500m/
The draw rate of min is carefully pulled to Φ=0.03 mm, passage draft 7%, i.e. prepares described Kufil superfine wire.
Comparative example 3
Prepare Kufil superfine wire:
(1) founding Kufil bar, including:
(1-1) vaccum sensitive stove is used to prepare Kufil blank:
Using the cathode copper of Cu purity 99.99wt% and the filamentary silver of Ag purity 99.99wt% is raw material；According to 6wt%Ag, surplus is
Copper and this proportioning of inevitable impurity, by described cathode copper, the high purity graphite of described filamentary silver addition intermediate frequency vaccum sensitive stove
In crucible, it is evacuated to vacuometer reading and reaches 10-1Pa and stable after, be gradually heating to 1300 DEG C, treat that aluminium alloy starts strongly
Splash, stand 20-30 minute；The Kufil blank of Φ=50mm it is cast into the most under vacuum conditions by graphite casting mould；
(1-2) antivacuum casting furnace is used to prepare Kufil bar continuously:
Antivacuum casting furnace is gradually heating to 1270-1280 DEG C with the programming rate of 150 DEG C/h, opens in high purity graphite crucible
Blowning installation, high-purity argon gas (more than 99.999%) flow is adjusted to 2 liters/min；Gradually to described high purity graphite crucible melting
Add Kufil blank in chamber, after molten bath is formed, melt chamber, incubation cavity, casting cavity cover graphite flakes, cover thickness
Degree is 30mm；Then it is continuously added to Kufil blank, after aluminium alloy reaches crucible safe capacity, is incubated 50 minutes, scarfing cinder；
Then, continuous up-casting becomes the Kufil bar of Φ=20mm, casting speed 450mm/min, pitch 3mm, same in casting continuously
Time, feed in melt chamber continuously in time according to alloy liquid level and temperature；
(2) the Kufil bar of above-mentioned Φ=20mm is rolled into further through two-roller mill the Kufil rolled bar of Φ=8mm,
Wherein, ellipse-circular hole system, passage mean coefficient of elongation 1.20, mill speed 100m/min are used；
(3) with the draw rate of 150m/min, the Kufil rolled bar of above-mentioned Φ=8mm is drawn greatly, be drawn into Φ=
The Kufil thick line of 2.8mm；
(4) described Kufil thick line is carried out intermediate heat-treatment:
The Kufil thick line of above-mentioned Φ=2.8mm is put in the nitrogen protection annealing furnace of forvacuum extremely-0.1MPa, and to
Wherein it is filled with high pure nitrogen, until pressure is 0.02MPa in the flue of described nitrogen protection annealing furnace, then heats up 1 hour extremely
480 DEG C, it is incubated 8 hours, finally with stove air cooling to room temperature；
(5) by the Kufil thick line through intermediate heat-treatment first with the draw rate of 700m/min in be pulled to Φ=1.2mm, road
Secondary draft 20%；Again with the little Φ=0.25mm that is pulled to of draw rate of 900m/min, passage draft 12%；Last with 1300m/
The draw rate of min is carefully pulled to Φ=0.04 mm, passage draft 8%, i.e. prepares described Kufil superfine wire.
Additionally, inventor has carried out phase respectively to the alloy superfine wire that above example 1 ~ 3 is obtained with comparative example 1 ~ 3
Closing detection, predominantly detected tensile strength, elongation at break, conductivity, these 4 indexs of oxygen content, result is as shown in table 1 below:
By the data in the upper table 1 of contrast, use the prepared alloy superfine wire of the embodiment of the present invention 1 ~ 3 and comparative example 1 ~ 3
The alloy superfine wire prepared is compared, and causes oxygen content to significantly reduce due to the addition of rare earth element, thus has higher anti-
Tensile strength and bigger elongation at break；In other words, in the case of superfine wire has same diameter Φ, provided by the present invention
The tensile strength of copper silver rare-earth alloy superfine wire is bigger, draws more difficult broken string, thus combination property is more preferable.
Being described in detail the specific embodiment of the present invention above, but it is intended only as example, the present invention does not limit
It is formed on particular embodiments described above.To those skilled in the art, any equivalent modifications that the present invention is carried out and
Substitute the most all among scope of the invention.Therefore, the impartial conversion made without departing from the spirit and scope of the invention and
Amendment, all should contain within the scope of the invention.
Claims (10)
1. a copper silver rare-earth alloy superfine wire, it is characterised in that include following component:
1 ~ 25wt% silver, 0.01 ~ 0.04wt% yttrium, surplus is copper and inevitable impurity；Or 1 ~ 25wt% silver, 0.10 ~ 0.30
Wt% lanthanum, surplus is copper and inevitable impurity；Or 1 ~ 25wt% silver, 0.01 ~ 0.02 wt% yttrium, 0.05 ~ 0.15wt% lanthanum,
Surplus is copper and inevitable impurity.
Copper silver rare-earth alloy superfine wire the most according to claim 1, it is characterised in that include following component:
2 ~ 6wt% silver, 0.012 ~ 0.03wt% yttrium, surplus is copper and inevitable impurity；Or 2 ~ 6wt% silver, 0.12 ~ 0.25
Wt% lanthanum, surplus is copper and inevitable impurity；Or 2 ~ 6wt% silver, 0.012 ~ 0.015 wt% yttrium, 0.06 ~ 0.12wt% lanthanum,
Surplus is copper and inevitable impurity.
Copper silver rare-earth alloy superfine wire the most according to claim 1, it is characterised in that described copper silver rare-earth alloy superfine wire
Diameter of phi≤0.05mm.
4. producing the method according to the copper silver rare-earth alloy superfine wire according to any one of claim 1 ~ 3, its feature exists
In, comprise the following steps:
(1) founding copper silver rare-earth alloy bar, including:
(1-1) vaccum sensitive stove is used to prepare pure copper silver rare-earth alloy blank；
(1-2) antivacuum casting furnace is used to prepare copper silver rare-earth alloy bar continuously；
(2) the copper silver rare-earth alloy bar using three rollers or the further milling step of two-roller mill (1) to prepare, obtains copper silver rare earth and closes
Gold rolled bar；
(3) described copper silver rare-earth alloy rolled bar is drawn greatly, be drawn into copper silver rare-earth alloy thick line；
(4) described copper silver rare-earth alloy thick line is carried out intermediate heat-treatment；
(5) the copper silver rare-earth alloy thick line through intermediate heat-treatment being carried out finish draw, final prepared described copper silver rare-earth alloy surpasses
Fine rule.
Method the most according to claim 4, it is characterised in that step (1-1) including:
Copper, silver, rare earth are proportionally added in the high purity graphite crucible of described vaccum sensitive stove, are evacuated to vacuometer reading and reach
To 10-1Pa and stable after, be gradually heating to 1200-1300 DEG C, treat aluminium alloy to start strongly and splash, stand 20-30 minute, then
It is cast into copper silver rare-earth alloy blank under vacuum conditions.
Method the most according to claim 4, it is characterised in that step (1-2) including:
Adopting and be heated by resistive high purity graphite crucible, described high purity graphite crucible is provided with blowning installation, and is made up of 3 chambeies,
It is respectively melt chamber, incubation cavity and casting cavity, is connected by undercurrent hole, bottom between chamber with chamber；By described antivacuum casting furnace by
Gradually it is warming up to 1250-1300 DEG C, opens described blowning installation, high pure nitrogen or argon flow amount are adjusted to 1-2 liter/min；Gradually
Copper silver rare-earth alloy blank is added, after molten bath is formed, in melt chamber, incubation cavity, casting described high purity graphite crucible melting chamber
Make and on chamber, cover graphite flakes；Then carrying out continuous charging, after aluminium alloy reaches crucible safe capacity, insulation 40-60 divides
Clock, scarfing cinder；Then, the copper silver rare-earth alloy bar of Φ=12.5-20mm, casting speed 400-800mm/min, pitch are cast continuously
3-5mm, while casting continuously, feeds continuously according to alloy liquid level and temperature in melt chamber.
Method the most according to claim 4, it is characterised in that in step (2): use arc triangle-circle or ellipse-circular hole
Type system, passage mean coefficient of elongation 1.15-1.25, mill speed 10-120m/min.
Method the most according to claim 4, it is characterised in that use the draw rate of 50-300m/min in step (3),
It is drawn into the copper silver rare-earth alloy thick line of Φ=2.6-3mm.
Method the most according to claim 4, it is characterised in that step (4) including:
Described copper silver rare-earth alloy thick line is put in the inert gas shielding annealing furnace of forvacuum extremely-0.1MPa, and to it
In be filled with high pure nitrogen or argon, until pressure is 0.02 ~ 0.05MPa in the flue of described inert gas shielding annealing furnace, connect
And be warming up to 420-520 DEG C, be incubated 6-8 hour, finally with stove air cooling to room temperature.
Method the most according to claim 4, it is characterised in that step (5) including:
By the copper silver rare-earth alloy thick line through intermediate heat-treatment first with the draw rate of 400-800m/min in be pulled to Φ=0.8-
1.2mm, passage draft 15-20%；Again with the little Φ=0.15-0.25mm that is pulled to of draw rate of 500-1000m/min, passage subtracts
Face rate 8-13%；Finally carefully it is pulled to Φ=0.025-0.05 mm, passage draft 7-with the draw rate of 800-1500m/min
10%, i.e. prepare described copper silver rare-earth alloy superfine wire.
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| CN114561566B (en) * | 2022-03-03 | 2022-09-20 | 江西理工大学 | Preparation method of copper-silver alloy wire |
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| CN115478185A (en) * | 2022-09-26 | 2022-12-16 | 江苏亨通电力智网科技有限公司 | Copper-tin alloy superfine wire and preparation method thereof |
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