CN106636780A - Superfine aluminum alloy conductor and preparation method thereof - Google Patents
Superfine aluminum alloy conductor and preparation method thereof Download PDFInfo
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- CN106636780A CN106636780A CN201710010020.0A CN201710010020A CN106636780A CN 106636780 A CN106636780 A CN 106636780A CN 201710010020 A CN201710010020 A CN 201710010020A CN 106636780 A CN106636780 A CN 106636780A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
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Abstract
The invention relates to a superfine aluminum alloy conductor and a preparation method thereof. Compared with the prior art, the preparation method includes the steps: alloying by the aid of a plurality of elements; preparing and adding intermediate alloy particles; comprehensively adopting the technologies such as rapid aluminum melting at high temperature and electromagnetic stirring; controlling temperature in a partitioned manner, and performing directional solidification; continuously casting and rolling materials; drawing the materials in a multi-pass manner; performing heat treatment to prepare the aluminum alloy conductor which is excellent in corrosion resistance and high in creep resistance and has excellent strength and conductivity in the length direction. Bonding reliability is improved, and packaging cost is remarkably reduced.
Description
Technical field
The invention belongs to metal material field, is related to a kind of aluminium alloy conductor and preparation method thereof, more particularly to it is a kind of super
Thin aluminium alloy conductor and preparation method thereof.
Background technology
Bonding wire is usually used in connecting the chip of such as RF power transistor microelectronic component, be semi-conductor discrete device and
The necessary basic material of integrated antenna package, is widely used in semi-conductor discrete device (transistor, diode, triode, luminous
Diode, LED etc.) and integrated circuit encapsulation.
It is to realize stable, reliable connection as the lead between chip and framework, bonding wire must possess following main spy
Property：Bonding wire should have larger volume conductivity, and pad resistance should be as far as possible little, pad institute in chip and chip
Gap required for the space of occupancy and welding also should be as far as possible little；Bonding wire should have good intensity, ductility and creep resistant
Characteristic, welding performance and corrosion resistance.
Existing bonding wire mainly has three kinds of spun gold, copper wire and aluminium wire.
Spun gold stable chemical performance；Weldering performance is good, and bonding technology is simple, but its bad mechanical property, in high-end encapsulation day
Tend towards superiority in the case of density, small size, the problems such as askew silk easily occur, collapse thread.Resistance to temperature impact property is poor, and to surface cleanness
It is very sensitive, when temperature is high, de- key, Yi Zao can be caused due to the problem that hard and crisp golden aluminium mesophase compound occurs alloy cracking
Into element deterioration；Simultaneously fancy price greatly improved packaging cost.
The electric conductivity and good heat conductivity of copper wire；The growth rate of Cu/Al intermetallic compounds is also than between Au/Al metal
The growth rate of compound is many slowly, and the integrity problem such as solder joint failure caused by intermetallic compound growth is lighter, but
The growth of Cu-Al alloy-layers can cause thread breakage from undercut bonding point.Copper wire hardness is high, needs very high weld force,
Easily chip is formed in engagement process is damaged；Copper ball surface easily forms Cu oxide during shape ball, welding difficulty after oxidation
Greatly；The copper aluminium connection in Plastic Package has corrosion tendency in malaria, and after packaging copper wire easily receives plastic material
The corrosion of middle halide.
The aluminum used material low cost of aluminium wire, cheap, aboundresources；Can be bonded at normal temperatures using welding method, to element
Heat affecting is little；It is to form Al-Al systems to be bonded with bare chip aluminum film electrode, without intermetallic compound and etching problem；But aluminium
Silk can not meet requirement in high power device and the less region of bonding area, and low production efficiency, yield rate are low.
Integrated circuit and semiconductor devices to encapsulation multilead, high integration and miniaturization, therefore it is required that using
Line footpath thinner, the more preferable bonding wire of electric property carries out the bonding of thin space, long range, develops and have simultaneously good electric conductivity
The ultra-fine bonding wire of energy, welding performance, mechanical performance, decay resistance, creep-resistant property and assembly performance is significant.
Before the present invention is completed, there is not yet with preparation method identical ultrafine aluminum alloy conductor product of the present invention,
Also have not seen on the books in the literature with the preparation method of identical ultrafine aluminum alloy conductor of the present invention.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention is intended to provide a kind of ultrafine aluminum alloy conductor and ultrafine aluminum alloy
The preparation method of conductor.
The specific design thinking of embodiments of the invention is as follows：Alloying is carried out using multielement, multicomponent is formed common
The al alloy component proportioning system of effect；Carry out aluminium intermediate alloy granulating and prepare addition, integrated use high temperature high-speed melting-aluminium, electricity
The technologies such as magnetic stirring, online refining, realize that the rapid melting of aluminium intermediate alloy, alloy element are uniformly distributed；To crystallizer point
Area heats, and installs calutron additional in a crystallizer driving aluminium alloy melt to produce vortex, realizes concussion refinement nucleus and crystalline substance
Grain, it is quick to form the blank with axially consecutive columnar grain tissue, aluminium alloy rod is obtained using continuous casting and rolling legal system；By multiple tracks
The drawing of secondary aximal deformation value and Technology for Heating Processing, make crystal grain in alloy structure be orientated along forming direction high concentration, in shaping side
It is upwardly formed texture；The elements such as Sc, Ce adsorb other alloying elements, form complex precipitates, reduce each element consolidating in aluminium
Solubility.The nanoscale of generation compound second and aluminum substrate height coherence, along the distribution of conductor length direction even dispersion, a large amount of
In the presence of the nano-second-phase of high diffusive distribution, can notable crystal grain thinning, suppress recrystallization, reduction crystal boundary and transgranular electricity
Electrode potential is poor, improve alloy strength, improves plasticity and decay resistance, and while raising creep threshold stress, significantly improves
The creep-resistant property of aluminium alloy conductor.Using Sc and Ce elements, the crystal grain and compound of refinement welding fusion zone, suppress heat affecting
The recrystallization in area so as to the as cast condition area of weld is transitted directly to by the subgrain tissue of matrix, makes should have recrystallized structure
Welding transition area or heat affected area have recrystallized structure, significantly reduce the thermal crack(ing sensitiveness of aluminium alloy conductor, improve
Aluminium alloy solderability and weld strength and anti-stress corrosiveness.Because alloying element is with the distributed mutually of nanoscale second, rather than
In being solid-solubilized in aluminium lattice, the aluminium distortion of lattice caused due to the addition of alloying element is significantly reduced, significantly reduce lattice and lack
Fall into the scattering to electronics.Nano level second-phase dispersion distribution simultaneously will not reduce effective conductive section of aluminium substantially.Obtain resistance to
Corrosive nature is excellent, creep resistance is big, and the aluminium alloy conductor with excellent intensity and electric conductivity in the longitudinal direction.
According to an aspect of the present invention, a kind of ultrafine aluminum alloy conductor, the aluminium alloy conductor is included by weight percentage
Following element：Iron Fe 0.13%-0.60%, silicon Si 0.10%-0.50%, copper Cu 0.16%-0.40%, scandium Sc
0.001%-0.5%, cerium Ce 0.001%-0.15%, magnesium Mg 0.01%-0.1%, boron 0.001%-0.04%, it is balance of
Aluminium Al.
Exemplary embodiment of the invention, a diameter of 0.005mm-0.08mm of the ultrafine aluminum alloy conductor；Institute
State ultrafine aluminum alloy conductor intensity be 150MPa-250MPa, elongation percentage >=2.5%, conductance >=61.5%IACS.
According to a further aspect in the invention, a kind of preparation method of ultrafine aluminum alloy conductor, including：
Step one：It is prepared by aluminium intermediate particle
The fusing of aluminium intermediate alloy ingot, continuous casting are obtained aluminium intermediate alloy bar, be then cut off making a diameter of 8mm-12mm, length
The cylinder particle for 30mm is spent, particle weight is 6g-14g；
Step 2：Dispensing
By weight percentage：Iron Fe 0.13%-0.60%, silicon Si 0.10%-0.50%, copper Cu 0.16%-
0.40%, scandium Sc 0.001%-0.5%, cerium Ce 0.001%-0.15%, magnesium Mg 0.01%-0.1%, boron 0.001%-
0.04%, balance of aluminium Al, carry out dispensing, to prepare aluminium ingot and aluminium intermediate alloy particle；
Step 3：Aluminium ingot rapid melting
Using high-speed melting-aluminium composite stove, using 1200 DEG C of high-temperature furnace gas and aluminium ingot described in forehearth aluminum melt submergence, realize
Rapid melting, obtains 750 DEG C of aluminum melts；
Step 4：Insulation, refining
The aluminum melt is shifted to kettle furnace, electromagnetic agitation processes 10min-12min；Then 30min is stood, is removed
Aluminum melt is simultaneously warming up to 780 DEG C by slag；
Step 5：Alloying
Rifle is penetrated using pneumatic charging master alloy particle is uniformly mapped in holding furnace in aluminum melt, realize aluminium intermediate alloy
Rapid melting and be uniformly distributed；To aluminum melt insulation 30min in holding furnace, electromagnetic agitation 10min-12min is carried out；Using
Wire type refining furnace carries out refining treatment, except Slag treatment；Stand 20min；
Step 6：Cast
The aluminium alloy melt after the process of online refining furnace is filtered using the ultra-fine corundum filter plate of 120 mesh, is removed
The impurity that more than 10 μm of diameter, and make it make casting ladle in inflow, lower casting ladle is flowed into after flow controller；
Step 7：Directional solidification
The outside of rectangular crystal crystallizer is provided with 2 solenoids, covers crystallizer periphery；The entrance of crystallizer, middle part, go out
3 ring-type coolers and temperature measurer are respectively mounted at mouthful, controlling crystallizer Axial Temperature Distribution is：655 DEG C -665 DEG C of porch,
It is middle 640 DEG C -650 DEG C, 600 DEG C -630 DEG C are exported, to aluminium alloy melt directional solidification；
Step 8：Continuous casting and rolling
Continuous casting, casting temperature is 655 DEG C -665 DEG C, and even ingot casting temperature is 450 DEG C -500 DEG C；On-line heating：Ingot casting temperature
480-520℃；Tandem rolling, roughing temperature is 460 DEG C -500 DEG C, 290 DEG C -320 DEG C of finishing temperature；Obtain the aluminium alloy of Φ 9.5mm
Bar；
Step 9：Rough system
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；Rolling pole stock is drawn into a diameter of
The aluminium alloy wire of 0.9mm-1.8mm；
Step 10：Middle drawing
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing of 1.8mm into
The aluminium alloy wire of 0.5mm-0.8mm；
Step 11：Heat treatment
The aluminium alloy wire of 0.5mm-0.8mm is heat-treated under vacuum conditions, heat treatment temperature is 350 DEG C, at heat
The reason time is 2.5h；
Step 12：Little drawing
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing after heat treatment into a diameter of
The aluminium alloy fine rule of 0.15mm；
Step 13：Finish draw system
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing Cheng Zhi of a diameter of 0.15mm
Footpath is the aluminium alloy conductor of 0.005mm-0.08mm.
Compared with prior art, ultrafine aluminum alloy conductor of the invention has high density fiber texture degree on forming direction, from
And there is excellent electric conductivity and mechanical performance；The crystal grain of welding region tissue is refined by alloy element, is significantly reduced
The thermal crack(ing sensitiveness of aluminium alloy conductor, improves aluminium alloy solderability and weld strength and anti-stress corrosiveness, while reducing
The resistance of pad；Be distributed using a large amount of high diffusives and aluminum substrate height coherence nano-second-phase, notable crystal grain thinning, suppression
System recrystallization, improves creep threshold stress, significantly improves the creep-resistant property of aluminium alloy conductor, so as to dramatically increase its bonding
Reliability, greatly improves its service life；Ultrafine aluminum alloy conductor according to embodiments of the present invention, its diameter up to 0.005mm,
Bonding wire taking up room in microelectronic component is significantly reduced, the weight increase that bonding wire causes is greatly reduced, while significantly
Reduce bonding and packaging cost.
Specific embodiment
To make technical solution of the present invention and advantage clearer, the present invention is made into one by following specific embodiment
Step is described in detail.Obviously, described embodiment is a part of embodiment of the invention, rather than the embodiment of whole.Based on this
Embodiment in invention, it is every other that those of ordinary skill in the art are obtained on the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1：
The preparation process of ultrafine aluminum alloy conductor is as follows：
Step one：It is prepared by aluminium intermediate particle
The fusing of aluminium intermediate alloy ingot, continuous casting are obtained aluminium intermediate alloy bar, be then cut off making a diameter of 8mm-12mm, length
The cylinder particle for 30mm is spent, particle weight is 6g-14g；
Step 2：Dispensing
By weight percentage：Iron Fe 0.13%, silicon Si 0.2%, copper Cu 0.16%, scandium Sc 0.001%, cerium Ce
0.001%, magnesium Mg 0.05%, boron 0.001%, balance of aluminium Al carries out dispensing, prepares aluminium ingot and aluminium intermediate alloy particle；
Step 3：Aluminium ingot rapid melting
Using high-speed melting-aluminium composite stove, using 1200 DEG C of high-temperature furnace gas and aluminium ingot described in forehearth aluminum melt submergence, realize
Rapid melting, obtains 750 DEG C of aluminum melts；
Step 4：Insulation, refining
The aluminum melt is shifted to kettle furnace, electromagnetic agitation processes 10min；30min is stood, slagging-off simultaneously melts in aluminium
Body is warming up to 780 DEG C；
Step 5：Alloying
Rifle is penetrated using pneumatic charging master alloy particle is uniformly mapped in stove in aluminum melt, realize the fast of aluminium intermediate alloy
Fast thawingization and it is uniformly distributed；To melt insulation 30min in holding furnace, electromagnetic agitation 10min is carried out；Refining treatment, except Slag treatment；
Stand 20min；
Step 6：Cast
The aluminium alloy melt after the process of online refining furnace is filtered using the ultra-fine corundum filter plate of 120 mesh, is removed
The impurity that more than 10 μm of diameter, and make it make casting ladle in inflow, lower casting ladle is flowed into after flow controller；
Step 7：Directional solidification
The outside of rectangular crystal crystallizer is provided with 2 solenoids, covers crystallizer periphery；The entrance of crystallizer, middle part, go out
3 ring-type coolers and temperature measurer are respectively mounted at mouthful, controlling crystallizer Axial Temperature Distribution is：655 DEG C of porch, it is middle
640 DEG C, export 600 DEG C.
Step 8：Continuous casting and rolling
Continuous casting, casting temperature is 655 DEG C, and even ingot casting temperature is 450 DEG C；On-line heating：480 DEG C of ingot casting temperature；Tandem rolling, slightly
It is 460 DEG C to roll temperature, 290 DEG C of finishing temperature；Obtain the aluminium alloy rod of Φ 9.5mm；
Step 9：Rough system
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；Rolling pole stock is drawn into a diameter of
The aluminium alloy wire of 1.8mm；
Step 10：Middle drawing
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing of 1.8mm into 0.8mm
Aluminium alloy wire；
Step 11：Heat treatment
The aluminium alloy wire of 0.8mm is heat-treated under vacuum conditions, heat treatment temperature is 350 DEG C, heat treatment time
For 2.5h；
Step 12：Little drawing
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing after heat treatment into a diameter of
The aluminium alloy fine rule of 0.15mm；
Step 13：Finish draw system
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing of 0.15mm into 0.02mm's
Aluminium alloy conductor.
The aluminium alloy conductor of 0.02mm according to obtained in the present embodiment, tensile strength is 150MPa, and elongation percentage is 3%, is led
Electric rate is 62.5%IACS.
Embodiment 2：
The preparation process of ultrafine aluminum alloy conductor is as follows：
Step one：It is prepared by aluminium intermediate particle
The fusing of aluminium intermediate alloy ingot, continuous casting are obtained aluminium intermediate alloy bar, be then cut off making a diameter of 8mm-12mm, length
The cylinder particle for 30mm is spent, particle weight is 6g-14g；
Step 2：Dispensing
By weight percentage：Iron Fe 0.32%, silicon Si 0.3%, copper Cu 0.32%, scandium Sc 0.1%, cerium Ce
0.008%, magnesium Mg 0.1%, boron 0.005%, balance of aluminium Al carries out dispensing, prepares aluminium ingot and aluminium intermediate alloy particle；
Step 3：Aluminium ingot rapid melting
Using high-speed melting-aluminium composite stove, using 1200 DEG C of high-temperature furnace gas and aluminium ingot described in forehearth aluminum melt submergence, realize
Rapid melting, obtains 750 DEG C of aluminum melts；
Step 4：Insulation, refining
The aluminum melt is shifted to kettle furnace, electromagnetic agitation processes 12min；30min is stood, slagging-off simultaneously melts in aluminium
Body is warming up to 780 DEG C；
Step 5：Alloying
Rifle is penetrated using pneumatic charging master alloy particle is uniformly mapped in stove in aluminum melt, realize the fast of aluminium intermediate alloy
Fast thawingization and it is uniformly distributed；To melt insulation 30min in holding furnace, electromagnetic agitation 12min is carried out；Refining treatment, except Slag treatment；
Stand 20min；
Step 6：Cast
The aluminium alloy melt after the process of online refining furnace is filtered using the ultra-fine corundum filter plate of 120 mesh, is removed
The impurity that more than 10 μm of diameter, and make it make casting ladle in inflow, lower casting ladle is flowed into after flow controller；
Step 7：Directional solidification
There are 2 solenoids the outside of rectangular crystal crystallizer, covers crystallizer periphery；The entrance of crystallizer, middle part, outlet
Place is respectively mounted 3 ring-type coolers and temperature measurer, controls crystallizer Axial Temperature Distribution and is：655 DEG C of porch, middle 640
DEG C, export 610 DEG C.
Step 8：Continuous casting and rolling
Continuous casting, casting temperature is 655 DEG C, and even ingot casting temperature is 465 DEG C；On-line heating：490 DEG C of ingot casting temperature；Tandem rolling, slightly
It is 470 DEG C to roll temperature, 295 DEG C of finishing temperature；Obtain the aluminium alloy rod of Φ 9.5mm；
Step 9：Rough system
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；Rolling pole stock is drawn into a diameter of
The aluminium alloy wire of 1.5mm；
Step 10：Middle drawing
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing of 1.5mm into 0.7mm
Aluminium alloy wire；
Step 11：Heat treatment
The aluminium alloy wire of 0.7mm is heat-treated under vacuum conditions, heat treatment temperature is 350 DEG C, heat treatment time
For 2.5h；
Step 12：Little drawing
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing after heat treatment into a diameter of
The aluminium alloy fine rule of 0.15mm；
Step 13：Finish draw system
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing of 0.15mm into 0.01mm's
Aluminium alloy conductor.
The aluminium alloy conductor of 0.01mm according to obtained in the present embodiment, tensile strength is 180MPa, and elongation percentage is 3.5%,
Conductance is 62.5%IACS.
Embodiment 3：
The preparation process of ultrafine aluminum alloy conductor is as follows：
Step one：It is prepared by aluminium intermediate particle
The fusing of aluminium intermediate alloy ingot, continuous casting are obtained aluminium intermediate alloy bar, be then cut off making a diameter of 8mm-12mm, length
The cylinder particle for 30mm is spent, particle weight is 6g-14g；
Step 2：Dispensing
By weight percentage：Iron Fe 0.25%, silicon Si 0.10%, copper Cu 0.22%, scandium Sc 0.002%, cerium Ce
0.002%, magnesium Mg 0.02%, boron 0.001%, balance of aluminium Al carries out dispensing, prepares aluminium ingot and aluminium intermediate alloy particle；
Step 3：Aluminium ingot rapid melting
Using high-speed melting-aluminium composite stove, using 1200 DEG C of high-temperature furnace gas and aluminium ingot described in forehearth aluminum melt submergence, realize
Rapid melting, obtains 750 DEG C of aluminum melts；
Step 4：Insulation, refining
The aluminum melt is shifted to kettle furnace, electromagnetic agitation processes 10min；30min is stood, slagging-off simultaneously melts in aluminium
Body is warming up to 780 DEG C；
Step 5：Alloying
Rifle is penetrated using pneumatic charging master alloy particle is uniformly mapped in stove in aluminum melt, realize the fast of aluminium intermediate alloy
Fast thawingization and it is uniformly distributed；To melt insulation 30min in holding furnace, electromagnetic agitation 10min is carried out；Refining treatment, except Slag treatment；
Stand 20min；
Step 6：Cast
The aluminium alloy melt after the process of online refining furnace is filtered using the ultra-fine corundum filter plate of 120 mesh, is removed
The impurity that more than 10 μm of diameter, and make it make casting ladle in inflow, lower casting ladle is flowed into after flow controller；
Step 7：Directional solidification
There are 2 solenoids the outside of rectangular crystal crystallizer, covers crystallizer periphery；The entrance of crystallizer, middle part, outlet
Place is respectively mounted 3 ring-type coolers and temperature measurer, controls crystallizer Axial Temperature Distribution and is：660 DEG C of porch, middle 645
DEG C, export 600 DEG C.
Step 8：Continuous casting and rolling
Continuous casting, casting temperature is 660 DEG C, and even ingot casting temperature is 475 DEG C；On-line heating：500 DEG C of ingot casting temperature；Tandem rolling, slightly
It is 480 DEG C to roll temperature, 300 DEG C of finishing temperature；Obtain the aluminium alloy rod of Φ 9.5mm；
Step 9：Rough system
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；Rolling pole stock is drawn into a diameter of
The aluminium alloy wire of 0.9mm；
Step 10：Middle drawing
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing of 0.9mm into 0.5mm
Aluminium alloy wire；
Step 11：Heat treatment
The aluminium alloy wire of 0.5mm is heat-treated under vacuum conditions, heat treatment temperature is 350 DEG C, heat treatment time
For 2.5h；
Step 12：Little drawing
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing after heat treatment into a diameter of
The aluminium alloy fine rule of 0.15mm；
Step 13：Finish draw system
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing of 0.15mm into 0.005mm
Aluminium alloy conductor.
The aluminium alloy conductor of 0.01mm according to obtained in the present embodiment, tensile strength is 230MPa, and elongation percentage is 3.5%,
Conductance is 62.8%IACS.
Embodiment 4：
The preparation process of ultrafine aluminum alloy conductor is as follows：
Step one：It is prepared by aluminium intermediate particle
The fusing of aluminium intermediate alloy ingot, continuous casting are obtained aluminium intermediate alloy bar, be then cut off making a diameter of 8mm-12mm, length
The cylinder particle for 30mm is spent, particle weight is 6g-14g；
Step 2：Dispensing
By weight percentage：Iron Fe 0.60%, silicon Si 0.3%, copper Cu 0.32%, scandium Sc 0.1%, cerium Ce
0.008%, magnesium Mg 0.1%, boron 0.005%, balance of aluminium Al carries out dispensing, prepares aluminium ingot and aluminium intermediate alloy particle；
Step 3：Aluminium ingot rapid melting
Using high-speed melting-aluminium composite stove, using 1200 DEG C of high-temperature furnace gas and aluminium ingot described in forehearth aluminum melt submergence, realize
Rapid melting, obtains 750 DEG C of aluminum melts；
Step 4：Insulation, refining
The aluminum melt is shifted to kettle furnace, electromagnetic agitation processes 10min；30min is stood, slagging-off simultaneously melts in aluminium
Body is warming up to 780 DEG C；
Step 5：Alloying
Rifle is penetrated using pneumatic charging master alloy particle is uniformly mapped in stove in aluminum melt, realize the fast of aluminium intermediate alloy
Fast thawingization and it is uniformly distributed；To melt insulation 30min in holding furnace, electromagnetic agitation 10min is carried out；Refining treatment, except Slag treatment；
Stand 20min；
Step 6：Cast
The aluminium alloy melt after the process of online refining furnace is filtered using the ultra-fine corundum filter plate of 120 mesh, is removed
The impurity that more than 10 μm of diameter, and make it make casting ladle in inflow, lower casting ladle is flowed into after flow controller；
Step 7：Directional solidification
The outside of rectangular crystal crystallizer is provided with 2 solenoids, covers crystallizer periphery；The entrance of crystallizer, middle part, go out
3 ring-type coolers and temperature measurer are respectively mounted at mouthful, controlling crystallizer Axial Temperature Distribution is：665 DEG C of porch, it is middle
640 DEG C, export 620 DEG C.
Step 8：Continuous casting and rolling
Continuous casting, casting temperature is 665 DEG C, and even ingot casting temperature is 500 DEG C；On-line heating：520 DEG C of ingot casting temperature；Tandem rolling, slightly
It is 500 DEG C to roll temperature, 20 DEG C of finishing temperature；Obtain the aluminium alloy rod of Φ 9.5mm；
Step 9：Rough system
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；Rolling pole stock is drawn into a diameter of
The aluminium alloy wire of 1.2mm；
Step 10：Middle drawing
Using carbide coating wire-drawing die, high-pressure injection lubricating oil, lubricating oil is adopted to adopt at the lubricating oil inlet of mould
With filter-press, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing of 1.8mm into 0.6mm
Aluminium alloy wire；
Step 11：Heat treatment
The aluminium alloy wire of 0.6mm is heat-treated under vacuum conditions, heat treatment temperature is 350 DEG C, heat treatment time
For 2.5h；
Step 12：Little drawing
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing after heat treatment into a diameter of
The aluminium alloy fine rule of 0.15mm；
Step 13：Finish draw system
Using diamond wire-drawing die, high-pressure injection lubricating oil is adopted at the lubricating oil inlet of mould, lubricating oil is using pressure
Power filter, alumina particles of the diameter in filtering lubricant oil more than 5 μm；By the aluminum alloy wire drawing of 0.15mm into 0.01mm's
Aluminium alloy wire.
The aluminium alloy conductor of 0.01mm according to obtained in the present embodiment, tensile strength is 250MPa, and elongation percentage is 2.5%,
Conductance is 61.5%IACS.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the specific embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. all should include
Within protection scope of the present invention.
Claims (8)
1. a kind of ultrafine aluminum alloy conductor, it is characterised in that the aluminium alloy conductor includes by weight percentage following element：Iron
Fe 0.13%-0.60%, silicon Si 0.10%-0.50%, copper Cu 0.16%-0.40%, scandium Sc 0.001%-0.5%, cerium
Ce 0.001%-0.15%, magnesium Mg 0.01%-0.1%, boron 0.001%-0.04%, balance of aluminium Al.
2. ultrafine aluminum alloy conductor according to claim 1, it is characterised in that the ultrafine aluminum alloy conductor it is a diameter of
0.005mm-0.08mm；The intensity of the ultrafine aluminum alloy conductor be 150MPa-250MPa, elongation percentage >=2.5%, conductance >=
61.5%IACS.
3. a kind of preparation method of ultrafine aluminum alloy conductor, it is characterised in that methods described includes：
Prepare aluminium intermediate alloy particle；
By weight percentage dispensing is carried out to following component：Iron Fe 0.13%-0.60%, silicon Si 0.10%-0.50%, copper
Cu0.16%-0.40%, scandium Sc 0.001%-0.5%, cerium Ce 0.001%-0.15%, magnesium Mg 0.01%-0.1%, boron
B0.001%-0.04%, balance of aluminium Al, with this aluminium ingot and aluminium intermediate alloy particle are prepared；
The aluminium ingot is melted using high-speed melting-aluminium composite stove, obtains 750 DEG C of aluminum melts；
The aluminum melt is shifted to kettle furnace, electromagnetic agitation process, the time is 10min-12min；Then stand
30min, removes the gred and is warming up to 780 DEG C；
Rifle is penetrated using pneumatic charging to be uniformly mapped to master alloy particle in holding furnace in aluminum melt；Aluminum melt in holding furnace is protected
Warm 30min, carries out electromagnetic agitation, and the time is 10min-12min；Refining treatment is carried out using online refining furnace, except Slag treatment；
Stand 20min；
The aluminium alloy melt after the process of online refining furnace is filtered using the ultra-fine corundum filter plate of 120 mesh, removes diameter
More than 10 μm of impurity, and make it make casting ladle in inflow, lower casting ladle is flowed into after flow controller；
To aluminium alloy melt directional solidification；
Continuous casting and rolling, obtains the aluminium alloy rod of Φ 9.5mm；
Rough system, by rolling pole stock the aluminium alloy wire of a diameter of 0.9mm-1.8mm is drawn into；
Middle drawing, by the aluminum alloy wire drawing of 0.9mm-1.8mm into 0.5mm-0.8mm aluminium alloy wire；
The aluminium alloy wire of 0.5mm-0.8mm is heat-treated under vacuum conditions, heat treatment temperature is 350 DEG C, during heat treatment
Between be 2.5h；
Little drawing, by the aluminum alloy wire drawing after heat treatment into a diameter of 0.15mm aluminium alloy fine rule；
Finish draw system, by the aluminium alloy fine rule of a diameter of 0.15mm the aluminium alloy conductor of a diameter of 0.005mm-0.08mm is drawn into.
4. preparation method according to claim 3, it is characterised in that the aluminium intermediate alloy particle is a diameter of 8mm-
12mm, length are the cylinder particle of 30mm, and particle weight is 6g-14g；The aluminium intermediate alloy particle is by by the middle of aluminium
Alloy melting, continuous casting obtains aluminium intermediate alloy bar, then makes the cut-out of aluminium intermediate alloy bar.
5. preparation method according to claim 3, it is characterised in that the directional solidification includes：In rectangular crystal crystallizer
Outside be provided with 2 solenoids；The entrance of crystallizer, middle part, exit are respectively mounted 3 ring-type coolers and temperature measurer,
Controlling crystallizer Axial Temperature Distribution is：655 DEG C -665 DEG C of porch, it is middle 640 DEG C -650 DEG C, export 600 DEG C -630 DEG C.
6. preparation method according to claim 3, it is characterised in that the continuous casting and rolling includes：Casting temperature is 655
DEG C -665 DEG C, even ingot casting temperature is 450 DEG C -500 DEG C；On-line heating, 480 DEG C -520 DEG C of ingot casting temperature are carried out to continuous casting ingot；Slightly
It is 460 DEG C -500 DEG C to roll temperature, 290 DEG C -320 DEG C of finishing temperature.
7. preparation method according to claim 3, it is characterised in that rough system is carried out using carbide coating wire-drawing die
With middle drawing, wherein, at carbide coating wire-drawing die lubricating oil inlet adopt high-pressure injection lubricating oil, the lubricating oil Jing
Excess pressure filter.
8. preparation method according to claim 3, it is characterised in that little drawing and essence are carried out using diamond wire-drawing die
Draw, wherein, high-pressure injection lubricating oil is adopted at diamond wire-drawing die lubricating oil inlet, the lubricating oil is through pressure mistake
Filter.
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| CN107464598A (en) * | 2017-08-18 | 2017-12-12 | 吴振江 | Aluminium alloy base composite conductor and its manufacture method and corresponding spin-off |
| CN107475572A (en) * | 2017-08-16 | 2017-12-15 | 吴振江 | Ultrafine aluminum alloy wire rod and its manufacture method and corresponding spin-off |
| CN107871549A (en) * | 2017-12-01 | 2018-04-03 | 金杯电工衡阳电缆有限公司 | A kind of vehicle aluminium alloy core cable |
| CN110484787A (en) * | 2019-08-20 | 2019-11-22 | 北京有色金属与稀土应用研究所 | A kind of high-purity almag microfilament and its preparation method and application |
| CN111411275A (en) * | 2020-04-23 | 2020-07-14 | 西安交通大学 | Scandium-iron-silicon composite micro-alloyed creep-resistant Al-Cu alloy and heat treatment process thereof |
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| CN110484787A (en) * | 2019-08-20 | 2019-11-22 | 北京有色金属与稀土应用研究所 | A kind of high-purity almag microfilament and its preparation method and application |
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