CN106148752B - A kind of strain insulator splicing fitting aluminium carbon composite and preparation method thereof - Google Patents
A kind of strain insulator splicing fitting aluminium carbon composite and preparation method thereof Download PDFInfo
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- CN106148752B CN106148752B CN201610624120.8A CN201610624120A CN106148752B CN 106148752 B CN106148752 B CN 106148752B CN 201610624120 A CN201610624120 A CN 201610624120A CN 106148752 B CN106148752 B CN 106148752B
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- 239000002131 composite material Substances 0.000 title claims abstract description 63
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000012211 strain insulator Substances 0.000 title abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 132
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 132
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 118
- 239000004411 aluminium Substances 0.000 claims abstract description 107
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 77
- 239000000428 dust Substances 0.000 claims abstract description 55
- 239000000843 powder Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 36
- 238000005266 casting Methods 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 9
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- 239000010439 graphite Substances 0.000 claims description 38
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- 238000000034 method Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 239000010703 silicon Substances 0.000 claims description 14
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- 238000000227 grinding Methods 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
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- 238000012360 testing method Methods 0.000 description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 239000004020 conductor Substances 0.000 description 11
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
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- 239000002041 carbon nanotube Substances 0.000 description 3
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- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- NQBXSWAWVZHKBZ-UHFFFAOYSA-N 2-butoxyethyl acetate Chemical compound CCCCOCCOC(C)=O NQBXSWAWVZHKBZ-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910016384 Al4C3 Inorganic materials 0.000 description 1
- 229910001339 C alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
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- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
-
- 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
Abstract
The present invention provides a kind of strain insulator splicing fitting aluminium carbon composite and preparation method thereof.Aluminium powder is uniformly mixed with the carbon dust for being scattered in organic solvent, is dried, ball milling, is pressed into aluminium carbon dust block；Smelted using above-mentioned aluminium carbon dust block, aluminium block as raw material, ingot casting, cogging, rolling to get high-intensitive, anti-relaxation splicing fitting material.The splicing fitting electric conductivity manufactured using aluminium carbon composite of the invention is suitable with fine aluminium.Since carbon particle is added, the hardness, intensity and relaxation property resistant to high temperatures of splicing fitting material are substantially increased.Alloy or compound are formed with aluminium since carbon has good stability in an atmosphere, and not, thus the corrosion resistance of aluminium does not occur significantly to change.Preparation step is simple and convenient to operate, is practical.
Description
Technical field
The invention belongs to electrical material technical field, in particular to a kind of strain insulator splicing fitting aluminium carbon composite and its system
Preparation Method.
Background technique
The raising of voltage class, extraneous natural environment is complicated and changeable in addition, generates the splicing fitting of transmission line of electricity
Phenomena such as heat and corrosion.Especially in Load in Summer peak period, caused by being overheated because of the aluminium hydraulic pressed connecting pipe and drainage plate of strain clamp
Heat waste, which is ruined, has become electric power netting safe running hidden danger outstanding." aerial power transmission line operating standard " (DL/T741) regulation, resistance to bracing cable
10 DEG C of temperature of conducting wire (be lower than 70 DEG C) must not be higher than by pressing from both sides running temperature, and conducting wire and diversing flow system relative temperature difference value are more than 35% to be
General defect is significant deficiency more than 80%.
The main reason for causing fitting abnormal heating to heat up has: (1) fitting heat resistance and anti-deformation recovery performance are insufficient,
Longtime running occurs crimping deformation recovery when abnormal high temperature in short-term, and grip relaxation causes to crimp not between strain insulator pipe and conducting wire
Real, contact resistance increases, and forms vicious circle；(2) electromigration causes contact surface material seriously to be degenerated, and high-density current can not lead to
Contact point is crossed, is formed about new water conservancy diversion point in former contact point therewith, so in cycles, electrical contact deteriorates increasingly, until losing
Effect.
In order to improve the grip and heat resistanceheat resistant relaxation property of splicing fitting, the metals such as copper, zirconium, nickel, titanium, vanadium member is added in aluminium
Aluminium alloy is made in element, can greatly improve the intensity and heat resistance of material, grip relaxation can be improved significantly.But it adopts
It is with the main problem of alloy strengthening, with the extension of runing time, inevitable landform between aluminium and these alloying elements
It at intermetallic compound and grows up, fitting resistivity is caused to increase, temperature is further up, and fitting working characteristics deteriorates.
Therefore, using the composite strengthening method of no-alloyed be improve splicing fitting aluminum material intensity ideal method it
One.
Summary of the invention
In order to overcome above-mentioned deficiency, the present invention provides connecing for a kind of high-intensitive, high heat dispersion and excellent electric contact performance
Continuous fitting material.The splicing fitting electric conductivity manufactured using aluminium carbon composite of the invention is suitable with fine aluminium.Due to carbon particle
It is added, substantially increases the hardness, intensity and relaxation property resistant to high temperatures of splicing fitting material.Since carbon has very well in an atmosphere
Stability, and do not form alloy or compound with aluminium, thus the corrosion resistance of aluminium does not occur significantly to change.
Currently, the research of aluminum matrix composite concentrates on two aspects: 1) using continuous fiber reinforcement；2) using discontinuous
Reinforcement enhancing.Wherein, discontinuous reinforcement body includes particle and whisker, and most commonly used is SiC and Al2O3.Thus, the present invention
SiC and Al is selected first2O3, SiC obtainedp、Al2O3wThough reinforced aluminum matrix composites have excellent wearability and low heat
Dilatancy, but will lead to the electric conductivity severe exacerbation of composite material, it is difficult to meet the technical requirements of contact fitting.For this purpose, this
Interface cohesion rule of the invention between system research aluminum substrate and discontinuous reinforcement body；Material wellability and preparation process couple
On the basis of " stress distribution, crack propagation and electric conductivity " influences, large-scale sieve has been carried out to existing discontinuous reinforcement body
Choosing, the results showed that carrying out enhancing to aluminum substrate using carbon dust can get expected hardness, intensity and relaxation property resistant to high temperatures, system
Standby aluminum matrix composite materials have preferably hot-workability, strain resistant slackness and electric conductivity, can satisfy aerial power transmission line
To the related request of splicing fitting in construction.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of splicing fitting material of high-intensitive, anti-relaxation, the splicing fitting material is aluminum matrix composite materials, intensity
σ0.2>=280MPa, hardness >=HB 160；Wherein, the mass fraction of carbon is 0.2%~10.0%.
By aluminium-carbon phase diagram it is found that under 1200 DEG C, either liquid or solid-state, solubility of the carbon in aluminium all pole
It is low, almost 0, this is to say, carbon dust is added in molten aluminum, does not form aluminium carbon alloy.Also, since solid solution cannot be formed
Body also hardly happens counterdiffusion between aluminium carbon.In aluminium carbon system, the intermetallic compound of only possible appearance is Al4C3,
Its formation condition is that carbon content is more than 40% in aluminium, and desired energy level is very high, it is existing under aluminium fusing point can
Energy property is minimum.Thus, aluminium-carbon composite is highly stable system under splicing fitting operating condition.
Preferably, in the splicing fitting material impurity iron, silicon and other impurity gross masses less than 0.3%；
Preferably, the carbon dust also can be used the mixture of crystalline graphite powder or crystalline graphite powder and carbon dust to replace.Aluminium is heat
With the good conductor material of electricity, carbon also has similar property.Thus by suitable carbon intervene in aluminium will not to the two it is crucial because
Element generates apparent negative effect.
In research, it is desirable to be enhanced aluminum substrate the composite material for having obtained higher performance using carbon nanotube.But it is many
Well known, carbon nanotube powder, which cannot be added directly into molten aluminum, realizes dispersion.Intermediate mistake is prepared using ball milling method
It crosses in the mechanical milling process of material, since metastable carbon nano tube cluster rendezvous problem can not solve, is not able to maintain its point finally
Dissipate the feature of nano material.Therefore, it is currently preferred using carbon dust, crystalline graphite powder, or both mixture.
Preferably, the organic solvent be methanol, ethyl alcohol, acetone, 2-Butoxyethyl acetate or vinyl chloride-vinyl acetate resin in extremely
Few one kind.
Preferably, the splicing fitting material is prepared with the following method, comprising:
Aluminium powder is uniformly mixed with the carbon dust for being scattered in organic solvent, is dried, ball milling, is pressed into aluminium carbon dust block；
It is smelted using above-mentioned aluminium carbon dust block, aluminium block as raw material, ingot casting, cogging, rolling is to get high-intensitive, anti-relaxation
Splicing fitting material.
Equally distributed fine carbon particle is added in aluminium, forms the mechanical impurity of aluminium cladding or adherency carbon, works as aluminium powder
When being greater than 3:1 with the mass ratio of carbon dust, carbon dust is bad to the reinforcing effect of aluminum substrate, material reply activation energy at high temperature and
Relaxation resistance decline；When the mass ratio of aluminium powder and carbon dust is less than 1:1, there is interfacial reaction to form strong―binding interface, Yi Yinqi
Composite material low stress damage.Therefore, the mass ratio of preferred aluminium powder and carbon dust is 1~3:1 in the present invention.
Preferably, after the ball-milling treatment, the partial size of carbon dust is less than 1 μm.
The high-intensitive aluminium carbon composite that equally distributed fine carbon particle obtains is added in aluminium, this is mainly utilized
Dispersed particle-strengthened mechanism.It is ground by planetary ball mill, on the one hand forms the mechanical impurity of aluminium cladding or adherency carbon, it is another
Aspect is that carbon dust is made further to be refined to 1 μm or less particle size, and dispersion-strengthened effect is more significant, due to micro fine carbon dust particle
The pinning fixed function of the defects of dislocation for generating in deformation processes to aluminium in compacting etc., vacancy, improves material at high temperature
Reply activation energy, thus obviously increase relaxation resistance.Even if fitting is made to transport for a long time under higher temperature (< 180 DEG C)
Row, crimping deformation part do not occur apparent relaxation yet.
Preferably, in the smelting process, after aluminium carbon dust block is pressed into molten aluminum bottom, what is dissolved under stirring is super
Fine carbon powder particle.Aluminium powder and carbon dust are subjected to adequately grinding refinement with ball milling method, carbon dust and aluminium powder is made to form mechanical adhesion
Or coated particle, solve the wetting out problems of carbon dust and aluminum solutions.The aluminium carbon mixed-powder block of compacting is pressed into smelting process
Behind molten aluminum bottom, the ultra-fine carbon powder particle dissolved under stirring is not easy to float and generate apparent gravity segregation and show
As to ensure that the uniformity of ingot casting ingredient.
The present invention also provides a kind of preparation methods of the splicing fitting material of high-intensitive, anti-relaxation, comprising:
Aluminium powder is uniformly mixed with the carbon dust for being scattered in organic solvent, is dried, ball milling, is pressed into aluminium carbon dust block；
It is smelted using above-mentioned aluminium carbon dust block, aluminium block as raw material, ingot casting, cogging, rolling is to get high-intensitive, anti-relaxation
Splicing fitting material.
Preferably, the mass ratio of the aluminium powder and carbon dust is 1~3:1；
Preferably, in the splicing fitting material, the mass fraction of carbon is 0.2%~10.0%；
Preferably, in the splicing fitting material impurity iron, silicon and other impurity gross masses less than 2.0%；
Preferably, after the ball-milling treatment, the partial size of carbon dust is less than 1 μm；
Preferably, the organic solvent be methanol, ethyl alcohol, acetone, 2-Butoxyethyl acetate or vinyl chloride-vinyl acetate resin in extremely
Few one kind.
Preferably, in the smelting process, after aluminium carbon dust block is pressed into molten aluminum bottom, what is dissolved under stirring is super
Fine carbon powder particle.
The present invention also provides a kind of splicing fitting material of preferably high-intensitive, anti-relaxation, mass percentage compositions
Are as follows: carbon 0.2%~10.0%, remaining is aluminium；The impurity element of iron and silicon ingredient as priority control, and the total content of the two <
1.0%；Total content < 1.0% of other impurity.
Preparation method:
(1) carbon dust that granularity is 500 mesh~8000 mesh (1.5 μm~25 μm of partial size) (is referred to including carbon dust, crystalline flake graphite
One or both of powder) it is dissolved in the alcohol (technical pure) that volume ratio is 2:1, it shakes and is uniformly dispersed in ultrasonic oscillator
It is spare afterwards.
(2) it is added that (active aluminium content is not low with dry carbon powder weight ratio for the pure aluminium powder of 2:1 in above-mentioned carbon dust alcoholic solution
In 97.0%, granularity is 400 mesh~800 mesh, 15 μm~37 μm of partial size), after being dispersed with stirring in machine mixer uniformly, merging
It is dried in drying box.
(3) the aluminium carbon mixed-powder after drying is added in the planetary ball mill with the protection of cooling and argon gas, grinding
It takes out and is put into compacting grinding tool after a certain period of time, being pressed into size with press machine is suitable for block.
(4) aluminium ingot is heated in the crucible of Medium frequency induction smelting equipment and is melted, be pressed into aluminium carbon in proportion with graphite bell jar
It after powder mass, is sufficiently stirred with electromagnetism and mechanical system, skims after aluminium carbon dust block is melting down, cast temperature is cooled to after refining
And after held for some time, aluminium carbon composite ingot casting is cast into the cooling mold of pressure.
(5) hot extrusion or hot rolling process are used, the shape of product for being suitable for making splicing fitting requirement is processed into.
Preferably, the cast temperature is 680 DEG C~780 DEG C.
Preferably, in the hot extrusion or hot rolling process, the heating temperature of aluminium carbon composite ingot casting is 400~
500℃。
The present invention also provides the splicing fitting materials of any above method preparation.
Any above-mentioned splicing fitting material can be used in transmission line construction in the present invention, or manufacture is mechanical and electrically produces
Product, all obtain expected effect, especially in aerial power transmission line construction, are fully able to meet high temperature, adverse circumstances make
With requiring.Beneficial effects of the present invention
1) present invention is suitable with fine aluminium using the splicing fitting electric conductivity of aluminium carbon composite manufacture.Due to carbon particle plus
Enter, substantially increases the hardness, intensity and relaxation property resistant to high temperatures of splicing fitting material.Since carbon has well in an atmosphere
Stability, and alloy or compound are not formed with aluminium, thus the corrosion resistance of aluminium does not occur significantly to change.
2) it in terms of electric conductivity, due to not forming intermetallic compound in the tissue of aluminium carbon composite, thus makes
At the resistance value of fitting ontology can maintain a long-term stability.
3) aluminium carbon composite components compatibility of the invention is the fine carbon particle ingredient being added insoluble in composite material,
Using particle enhancement effect, while not influencing processing performance, the strength of materials (σ is greatly improved0.2>=280MPa) and it is hard
It spends (>=HB 160).At the same time, it ensure that composite material has good conductive property and corrosion resistance using carbon.
4) the splicing fitting electric conductivity and fine aluminium phase compared with the prior art, manufactured using aluminium carbon composite of the invention
When.Since carbon particle is added, the hardness, intensity and relaxation property resistant to high temperatures of splicing fitting material are substantially increased.Since carbon exists
There is good stability in atmosphere, and do not form alloy or compound with aluminium, thus the corrosion resistance of aluminium does not occur obviously
Change.
Specific embodiment
Feature of present invention and other correlated characteristics are described in further detail by the following examples, in order to the same industry
The understanding of technical staff:
Embodiment 1
A kind of corrosion-resistant splicing fitting material, each component mass percent are as follows: graphite carbon dust 7.0%, surplus are aluminium.It is miscellaneous
Matter iron, silicon and other total impurities are 1.5%.
The raw material of selection have: the graphite carbon dust 7.0% that phosphorus content is 99.9%, and the trade mark is FLPN320.0 aluminium powder (nitrogen
Atomizing aluminium powder, 32 μm of average grain diameter), surplus is electrician's aluminium ingot of the Al99.70E trade mark.Impurity iron, silicon and other total impurities are
0.3%.
Prepare aluminium-graphite composite powder block.The stirring of graphite carbon dust is dissolved in industrial alcohol in a reservoir, it is clear to be put into ultrasonic wave
It washes in device after vibration is uniformly dispersed, the FLPN320.0 pure aluminium powder of 1 times of graphite carbon dust weight is added, mechanical stirring uniformly fills afterwards
Enter planetary ball mill, tank body and sphere are alumina ceramic material, are evacuated to 10-1It is filled with argon gas after Pa, controls tank body temperature
Degree is at 50 DEG C hereinafter, taking out loading mold after grinding 3h with 200r/min revolving speed, being pressed into density is 1.0~2.0g/cm3Diameter
It is spare for the cylinder block of D30mm × 30mm.
Melting aluminium carbon composite ingot casting: aluminium ingot is put into intermediate frequency furnace, and heating is heated to 690 DEG C and keeps the temperature, to aluminium ingot
After being completely melt, it is pressed into aluminium carbon intermediate composite with graphite bell jar according to the above ratio, electromagnetism and mechanical stirring is added, is warming up to
It 710 DEG C, is sufficiently melted to the block in molten bath, carries out stirring of skimming, then sample detection adjusting component, refined, tapping casting
At D30mm × 100mm aluminium carbon composite ingot casting, cast temperature is 680 DEG C~700 DEG C.Then it is pressed into using reverse extrusion method
Diameter is the tubing of D30mm × 6.25mm (internal diameter d17.5mm).Extrusion cylinder heating temperature is 460 DEG C~500 DEG C, and ingot casting adds
Hot temperature is 480~500 DEG C.
Above-mentioned joint coupling tubing is made to the aluminum stranded conductor joint coupling of JY-150L together with the fine aluminium casing of identical size
Each 2 groups of sample, every group is 3, using the aluminum stranded conductor of hydraulic method indentation LJ-150 specification, carries out connecting performance survey in laboratory
Examination.
Test result is as follows:
(1) room temperature is averaged handgrip exercise result: fine aluminium casing is 25.5kN；Aluminium carbon composite casing is 31.7kN.
(2) cooled to room temperature is taken out after the 2nd group of sample being heated to 150 DEG C of heat preservations 6 hours in oven heat, is measured
The result of grip: fine aluminium casing is 19.8kN (reducing 22.4%)；Aluminium carbon composite casing is that 29.7kN (is reduced
6.3%).
The above results show that aluminium carbon composite casing has good relaxation resistance.
Tension test, the yield strength average out to that three groups of 5 times of samples measure are carried out on universal testing machine to bar sampling
σ0.2=353MPa, average elongation δ5=6.7%.
Embodiment 2
A kind of corrosion-resistant splicing fitting material, each component mass percent are as follows: graphite carbon dust 5.0%, surplus are aluminium.It is miscellaneous
Matter iron, silicon and other total impurities are 1.5%.
The raw material of selection have: the graphite carbon dust 5.0% that phosphorus content is 99.9%, and the trade mark is FLPN320.0 aluminium powder (nitrogen
Atomizing aluminium powder, 32 μm of average grain diameter), surplus is electrician's aluminium ingot of the Al99.70E trade mark.Impurity iron, silicon and other total impurities are
0.3%.
It prepares aluminium-graphite composite powder block: the stirring of graphite carbon dust being dissolved in industrial alcohol in a reservoir, it is clear to be put into ultrasonic wave
It washes in device after vibration is uniformly dispersed, the FLPN320.0 pure aluminium powder of 2 times of graphite carbon dust weight is added, mechanical stirring uniformly fills afterwards
Enter to have the planetary ball mill of water-cooling system, tank body and sphere are alumina ceramic material, are evacuated to 10-1Argon is filled with after Pa
Gas takes out loading mold after controlling pot temperature at 50 DEG C hereinafter, grinding 3h with 200r/min revolving speed, and being pressed into density is 1.0
~2.0g/cm3Diameter is the cylinder block of D30mm × 30mm, spare.
Melting aluminium carbon composite ingot casting: aluminium ingot is put into intermediate frequency furnace, and heating is heated to 690 DEG C and keeps the temperature, to aluminium ingot
After being completely melt, aluminium-graphite composite powder block is prepared with graphite bell jar indentation according to the above ratio.Electromagnetism and mechanical stirring, heating is added
To 710 DEG C, after the block in molten bath sufficiently melts, stirring of skimming, then sample detection adjusting component, is refined, tapping casting
At D30mm × 100mm aluminium carbon composite ingot casting, cast temperature is 680 DEG C~700 DEG C.Then it is pressed into using reverse extrusion method
Diameter is the tubing of D30mm × 6.25mm (internal diameter d17.5mm).Extrusion cylinder heating temperature is 460 DEG C~500 DEG C, and ingot casting adds
Hot temperature is 480~500 DEG C.
Above-mentioned joint coupling tubing is made to the aluminum stranded conductor joint coupling of JY-150L together with the fine aluminium casing of identical size
Each 2 groups of sample, every group is 3, using the aluminum stranded conductor of hydraulic method indentation LJ-150 specification, carries out connecting performance survey in laboratory
Examination.
Test result is as follows:
(1) room temperature is averaged handgrip exercise result: fine aluminium casing is 25.5kN；Aluminium carbon composite casing is 28.0kN.
(2) cooled to room temperature is taken out after the 2nd group of sample being heated to 150 DEG C of heat preservations 6 hours in oven heat, is measured
The result of grip: fine aluminium casing is 19.8kN (reducing 22.4%)；Aluminium carbon composite casing is that 25.2kN (is reduced
10.0%).
The above results show that aluminium carbon composite casing has good relaxation resistance.
Tension test, the yield strength average out to that three groups of 5 times of samples measure are carried out on universal testing machine to bar sampling
σ0.2=327MPa, average elongation δ5=8.5%.
Embodiment 3
A kind of corrosion-resistant splicing fitting material, each component mass percent are as follows: graphite carbon dust 2.0%, surplus are aluminium.It is miscellaneous
Matter iron, silicon and other total impurities are 0.3%.
The raw material of selection have: the graphite carbon dust 2.0% that phosphorus content is 99.9%, and the trade mark is FLPN320.0 aluminium powder (nitrogen
Atomizing aluminium powder, 32 μm of average grain diameter), surplus is electrician's aluminium ingot of the Al99.70E trade mark.Impurity iron, silicon and other total impurities are
0.3%.
It prepares aluminium-graphite composite powder block: the stirring of graphite carbon dust being dissolved in industrial alcohol in a reservoir, it is clear to be put into ultrasonic wave
It washes in device after vibration is uniformly dispersed, the FLPN320.0 pure aluminium powder of 3 times of graphite carbon dust weight is added, mechanical stirring uniformly fills afterwards
Enter to have the planetary ball mill of water-cooling system, tank body and sphere are alumina ceramic material, are evacuated to 10-1Argon is filled with after Pa
Gas takes out loading mold after controlling pot temperature at 50 DEG C hereinafter, grinding 3h with 200r/min revolving speed, and being pressed into density is 1.5
~2.0g/cm3Diameter is the cylinder block of D30mm × 30mm.
Melting aluminium carbon composite ingot casting: aluminium ingot is put into intermediate frequency furnace, and heating is heated to 690 DEG C and keeps the temperature, to aluminium ingot
After being completely melt, it is pressed into aluminium carbon intermediate composite with graphite bell jar according to the above ratio, electromagnetism and mechanical stirring is added, is warming up to
It 710 DEG C, is sufficiently melted to the block in molten bath, carries out stirring of skimming, then sample detection adjusting component, refined, tapping casting
At D30mm × 100mm aluminium carbon composite ingot casting, cast temperature is 680 DEG C~700 DEG C.Then it is pressed into using reverse extrusion method
Diameter is the tubing of D30mm × 6.25mm (internal diameter d17.5mm).Extrusion cylinder heating temperature is 460 DEG C~500 DEG C, and ingot casting adds
Hot temperature is 480~500 DEG C.
Above-mentioned joint coupling tubing is made to the aluminum stranded conductor joint coupling of JY-150L together with the fine aluminium casing of identical size
Each 2 groups of sample, every group is 3, using the aluminum stranded conductor of hydraulic method indentation LJ-150 specification, carries out connecting performance survey in laboratory
Examination.
Test result is as follows:
(1) room temperature is averaged handgrip exercise result: fine aluminium casing is 25.5kN；Aluminium carbon composite casing is 29.2kN.
(2) cooled to room temperature is taken out after the 2nd group of sample being heated to 150 DEG C of heat preservations 6 hours in oven heat, is measured
The result of grip: fine aluminium casing is 19.8kN (reducing 22.4%)；Aluminium carbon composite casing is that 26.9kN (is reduced
7.8%).
The above results show that aluminium carbon composite casing has good relaxation resistance.
Tension test, the yield strength average out to that three groups of 5 times of samples measure are carried out on universal testing machine to bar sampling
σ0.2=353MPa, average elongation δ5=6.7%.
Embodiment 4
A kind of corrosion-resistant splicing fitting material, each component mass percent are as follows: graphite carbon dust 0.2%, surplus are aluminium.It is miscellaneous
Matter iron, silicon and other total impurities are 0.3%.
The raw material of selection have: the graphite carbon dust 0.2% that phosphorus content is 99.9%, and the trade mark is FLPN320.0 aluminium powder (nitrogen
Atomizing aluminium powder, 32 μm of average grain diameter), surplus is electrician's aluminium ingot of the Al99.70E trade mark.Impurity iron, silicon and other total impurities are
0.3%.
It prepares aluminium-graphite composite powder block: the stirring of graphite carbon dust being dissolved in acetone in a reservoir, is put into ultrasonic cleaner
After middle vibration is uniformly dispersed, the FLPN320.0 pure aluminium powder of 1 times of graphite carbon dust weight is added, mechanical stirring is uniformly packed into row afterwards
Celestial body grinding machine, tank body and sphere are alumina ceramic material, are evacuated to 10-1Argon gas is filled with after Pa, control pot temperature exists
50 DEG C hereinafter, be packed into mold to take out after 200r/min revolving speed grinding 1h, being pressed into density is 1.5~2.0g/cm3Diameter is
The cylinder block of D30mm × 30mm.
Melting aluminium carbon composite ingot casting: aluminium ingot is put into intermediate frequency furnace, and heating is heated to 690 DEG C and keeps the temperature, to aluminium ingot
After being completely melt, it is pressed into aluminium carbon intermediate composite with graphite bell jar according to the above ratio, electromagnetism and mechanical stirring is added, is warming up to
It 710 DEG C, is sufficiently melted to the block in molten bath, carries out stirring of skimming, then sample detection adjusting component, refined, tapping casting
At D30mm × 100mm aluminium carbon composite ingot casting, cast temperature is 680 DEG C~700 DEG C.Then it is pressed into using reverse extrusion method
Diameter is the tubing of D30mm × 6.25mm (internal diameter d17.5mm).Extrusion cylinder heating temperature is 460 DEG C~480 DEG C, and ingot casting adds
Hot temperature is 460~480 DEG C.
Above-mentioned joint coupling tubing is made to the aluminum stranded conductor joint coupling of JY-150L together with the fine aluminium casing of identical size
Each 2 groups of sample, every group is 3, using the aluminum stranded conductor of hydraulic method indentation LJ-150 specification, carries out connecting performance survey in laboratory
Examination.
Test result is as follows:
(1) room temperature is averaged handgrip exercise result: fine aluminium casing is 25.5kN；Aluminium carbon composite casing is 26.3kN.
(2) cooled to room temperature is taken out after the 2nd group of sample being heated to 150 DEG C of heat preservations 6 hours in oven heat, is measured
The result of grip: fine aluminium casing is 19.8kN (reducing 22.4%)；Aluminium carbon composite casing is that 23.3kN (is reduced
11.5%).
The above results show that aluminium carbon composite casing has good relaxation resistance.
Tension test, the yield strength average out to that three groups of 5 times of samples measure are carried out on universal testing machine to bar sampling
σ0.2=285MPa, average elongation δ5=7.9%.
Embodiment 5
A kind of corrosion-resistant splicing fitting material, each component mass percent are as follows: graphite carbon dust 9.5%, surplus are aluminium.It is miscellaneous
Matter iron, silicon and other total impurities are 1.5%.
The raw material of selection have: the graphite carbon dust 9.5% that phosphorus content is 99.9%, and the trade mark is FLPN320.0 aluminium powder (nitrogen
Atomizing aluminium powder, 32 μm of average grain diameter), surplus is electrician's aluminium ingot of the Al99.70E trade mark.Impurity iron, silicon and other total impurities are
0.3%.
It prepares aluminium-graphite composite powder block: the stirring of graphite carbon dust being dissolved in ethyl alcohol in a reservoir, is put into ultrasonic cleaner
After middle vibration is uniformly dispersed, the FLPN320.0 pure aluminium powder of 2 times of graphite carbon dust weight is added, mechanical stirring is uniformly packed into band afterwards
There is the planetary ball mill of water-cooling system, tank body and sphere are alumina ceramic material, are evacuated to 10-1Argon gas is filled with after Pa,
Control pot temperature at 50 DEG C hereinafter, with 200r/min revolving speed grind 3h after take out be packed into mold, be pressed into density be 0.5~
1.5g/cm3Diameter is the cylinder block of D30mm × 30mm.
Melting aluminium carbon composite ingot casting: aluminium ingot is put into intermediate frequency furnace, and heating is heated to 690 DEG C and keeps the temperature, to aluminium ingot
After being completely melt, it is pressed into aluminium carbon intermediate composite with graphite bell jar according to the above ratio, electromagnetism and mechanical stirring is added, is warming up to
It 710 DEG C, is sufficiently melted to the block in molten bath, carries out stirring of skimming, then sample detection adjusting component, refined, tapping casting
At D30mm × 100mm aluminium carbon composite ingot casting, cast temperature is 680 DEG C~700 DEG C.Then it is pressed into using reverse extrusion method
Diameter is the tubing of D30mm × 6.25mm (internal diameter d17.5mm).Extrusion cylinder heating temperature is 480 DEG C~500 DEG C, and ingot casting adds
Hot temperature is 480~500 DEG C.
Above-mentioned joint coupling tubing is made to the aluminum stranded conductor joint coupling of JY-150L together with the fine aluminium casing of identical size
Each 2 groups of sample, every group is 3, using the aluminum stranded conductor of hydraulic method indentation LJ-150 specification, carries out connecting performance survey in laboratory
Examination.
Test result is as follows:
(1) room temperature is averaged handgrip exercise result: fine aluminium casing is 25.5kN；Aluminium carbon composite casing is 33.0kN.
(2) cooled to room temperature is taken out after the 2nd group of sample being heated to 150 DEG C of heat preservations 6 hours in oven heat, is measured
The result of grip: fine aluminium casing is 19.8kN (reducing 22.4%)；Aluminium carbon composite casing is that 30.5kN (is reduced
7.5%).
The above results show that aluminium carbon composite casing has good relaxation resistance.
Tension test, the yield strength average out to that three groups of 5 times of samples measure are carried out on universal testing machine to bar sampling
σ0.2=366MPa, average elongation δ5=2.5%.
Finally it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not limited to this hair
It is bright, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still
It can modify to technical solution documented by previous embodiment, or part is equivalently replaced.It is all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.Although above-mentioned in conjunction with specific embodiments of the present invention have been described, not to the limit of the scope of the present invention
System, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art do not need to pay
The various modifications or changes that creative work can be made out are still within protection scope of the present invention.
Claims (3)
1. a kind of preparation method of the splicing fitting material of high-intensitive, anti-relaxation characterized by comprising
1) raw material selected have: the graphite carbon dust 7.0% that phosphorus content is 99.9%, and the trade mark is FLPN320.0 aluminium powder --- nitrogen
Aerosolization aluminium powder, 32 μm of average grain diameter, surplus is electrician's aluminium ingot of the Al99.70E trade mark；Impurity iron, silicon and other total impurities
It is 0.3%；
2) it prepares aluminium-graphite composite powder block: the stirring of graphite carbon dust being dissolved in industrial alcohol in a reservoir, is put into ultrasonic cleaning
After vibration is uniformly dispersed in device, the FLPN320.0 pure aluminium powder of 1 times of graphite carbon dust weight is added, mechanical stirring is uniformly packed into afterwards
Planetary ball mill, tank body and sphere are alumina ceramic material, are evacuated to 10-1It is filled with argon gas after Pa, controls pot temperature
At 50 DEG C hereinafter, taking out loading mold after grinding 3h with 200r/min revolving speed, being pressed into density is 1.0~2.0g/cm3Diameter is
The cylinder block of D30mm × 30mm, it is spare；
3) melting aluminium carbon composite ingot casting: aluminium ingot is put into intermediate frequency furnace, and heating is heated to 690 DEG C and keeps the temperature, complete to aluminium ingot
After running down, it is pressed into aluminium carbon intermediate composite with graphite bell jar, electromagnetism and mechanical stirring is added, 710 DEG C are warming up to, to molten bath
In block sufficiently melt, carry out stirring of skimming, then sample detection adjusting component, refine, tapping casting at D30mm ×
100mm aluminium carbon composite ingot casting, cast temperature are 680 DEG C~700 DEG C；Then use reverse extrusion method be pressed into diameter for
D30mm × 6.25mm --- internal diameter is the tubing of d17.5mm；Extrusion cylinder heating temperature is 460 DEG C~500 DEG C, ingot casting heating temperature
Degree is 480~500 DEG C.
2. the splicing fitting material of method preparation described in claim 1.
3. application of the splicing fitting material as claimed in claim 2 in transmission line construction, or the manufacture of mechanical and electric product.
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| CN102864324A (en) * | 2012-09-06 | 2013-01-09 | 东北大学 | Preparation method for carbon nanomaterial enhanced aluminum base composite material |
| CN105648249A (en) * | 2016-03-02 | 2016-06-08 | 昆明理工大学 | Preparation method for carbon nano tube strengthened aluminum-based multilayer composite material |
| CN105734322A (en) * | 2016-03-02 | 2016-07-06 | 昆明理工大学 | Preparation method of carbon nanotube strengthened aluminum-based composite material |
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| CN102864324A (en) * | 2012-09-06 | 2013-01-09 | 东北大学 | Preparation method for carbon nanomaterial enhanced aluminum base composite material |
| CN105648249A (en) * | 2016-03-02 | 2016-06-08 | 昆明理工大学 | Preparation method for carbon nano tube strengthened aluminum-based multilayer composite material |
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