CN107043878B - Aluminum alloy materials and its production technology, the electric conductor of high-strength high-conductivity - Google Patents

Aluminum alloy materials and its production technology, the electric conductor of high-strength high-conductivity Download PDF

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CN107043878B
CN107043878B CN201710325747.8A CN201710325747A CN107043878B CN 107043878 B CN107043878 B CN 107043878B CN 201710325747 A CN201710325747 A CN 201710325747A CN 107043878 B CN107043878 B CN 107043878B
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aluminum alloy
conductivity
alloy materials
raw
strength
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CN107043878A (en
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潘伟津
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GUANGDONG WEIYE ALUMINIUM FACTORY GROUP Co Ltd
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GUANGDONG WEIYE ALUMINIUM FACTORY GROUP Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08Alloys based on aluminium with magnesium as the next major constituent with silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/002Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent

Abstract

The present invention discloses a kind of production technology of the aluminum alloy materials of high-strength high-conductivity, including:First, raw material are prepared according to scheduled ratio spare;2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;3rd, solid-state circle ingot casting is squeezed, mould temperature is 440 450 DEG C or 470 480 DEG C, and stick temperature is 470 480 DEG C or 490 500 DEG C, forms alloy profile;4th, the alloy profile of extrusion forming is subjected to quenching treatment;5th, quenched alloy profile is subjected to ageing treatment, aging temp is 195 205 DEG C, and aging time is 9 11h, obtains aluminum alloy materials finished product.Correspondingly, aluminum alloy materials and electric conductor the present invention also provides a kind of high-strength high-conductivity.Using the present invention, conduct electricity very well, good mechanical property, and when it is applied to small bore sub-thread aluminum conductor, solve the problems, such as that connection is difficult.

Description

Aluminum alloy materials and its production technology, the electric conductor of high-strength high-conductivity
Technical field
The present invention relates to aluminum alloy materials technical field more particularly to a kind of aluminum alloy materials of high-strength high-conductivity And its production technology and the electric conductor containing above-mentioned aluminum alloy materials.
Background technology
Last century the fifties end, country propose the policy of " replacing copper with aluminium ", and each side has made this many experiments and exploration, Aluminium core rubber-insulated wire, aluminium core oil-impregnated paper insulation cable etc. are come out one after another.Cable in power industry is for conveying and distributing The resource of electric energy, basic structure are usually made of core, insulating layer, shielded layer and four part of protective layer, and wherein core is electricity Current-carrying part in cable is the chief component of cable for conveying electric energy, therefore is existed to the aluminum alloy materials for making core The various aspects such as electric conductivity, mechanical performance, processability and service life have higher requirement.
Moreover, aluminum steel connection is not so easy like copper wire connection, through practice, 25mm2And the connection of Yi Shang multiply aluminum conductor Effect is very good, but 10mm2The connection effect of following small bore sub-thread aluminum conductor is poor.However, small section lead is in house work It is seen everywhere in journey, is related to huge numbers of families.
Therefore, how to ensure that aluminium alloy has good electric conductivity and mechanical performance, and solve small bore sub-thread aluminium and lead The connectivity problem of line, becomes urgent problem to be solved.
In the prior art, in order to solve electric conductivity and mechanical performance, the comparison of 105154726 A of Publication No. CN is literary Part 1 discloses a kind of aluminum alloy materials, which is characterized in that according to mass percent meter, the aluminum alloy materials are included with the following group Point:0.08~0.35% Cu, 0.3~1.5% Mn, 0.08~0.4% Fe, 0.026~0.11% Si, 0.001~0.02% Ti, 0.003~0.018% B, 0.05~0.25% RE, surplus be Al and impurity, and Impurity≤0.1%;Wherein, the mass ratio of the Fe and Si is 3.0~3.8:1.
Documents 1 are mainly to be realized by limiting the concrete content of copper, manganese, iron, silicon, titanium, boron, rare earth, especially It is realized by controlling the content ratio of iron and silicon, but it can not ensure that aluminum alloy materials have while electric conductivity is improved There is preferable mechanical performance, tensile strength is only 125~160MPa.Moreover, it can not also solve small bore sub-thread aluminum conductor Connectivity problem.
Invention content
The technical problem to be solved in the present invention is, provides a kind of aluminum alloy materials, conducts electricity very well, good mechanical property, And when it is applied to small bore sub-thread aluminum conductor, solve the problems, such as that connection is difficult.
The technical problem to be solved in the present invention also resides in, and provides a kind of preparation method of aluminum alloy materials, simple for process, holds Easily implement, and product obtained conducts electricity very well, good mechanical property, and when its products application is in small bore sub-thread aluminum conductor, Solve the problems, such as that connection is difficult.
The technical problem to be solved in the present invention also resides in, and provides a kind of electric conductor, conducts electricity very well, good mechanical property, and When it is used as small bore sub-thread aluminum conductor, solve the problems, such as that connection is difficult.
To reach above-mentioned technique effect, the present invention provides a kind of productions of the aluminum alloy materials of high-strength high-conductivity Technique includes the following steps:
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.43%-0.46%Si ,≤0.20%Fe ,≤0.01%Cu ,≤0.01%Mn, 0.53-0.57%Mg ,≤0.01%Cr, 0.005%-0.015%Ti, 0.03%-0.05%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 440-450 DEG C or 470-480 DEG C, stick temperature for 470-480 DEG C or 490-500 DEG C, form alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 195-205 DEG C, aging time 9- 11h, obtains aluminum alloy materials finished product, conductivity >=57.6% of the aluminum alloy materials finished product, and tensile strength >=250MPa is bent Take intensity >=230MPa, elongation percentage >=13%.
As the improvement of said program, aging temp is 198-202 DEG C, aging time 9.5-10.5h.
As the improvement of said program, aging temp is 200 DEG C, aging time 10h.
As the improvement of said program, mould temperature is 445-450 DEG C or 475-480 DEG C, and stick temperature is 470-475 DEG C or 495- 500℃。
As the improvement of said program, conductivity >=60% of the aluminum alloy materials finished product, tensile strength >=260MPa, Yield strength >=240MPa, elongation percentage >=13.5%.
As the improvement of said program, aluminum alloy materials are as follows with the formula for raw stock of weight percent:
0.43%-0.44%Si ,≤0.10%Fe ,≤0.001%Cu ,≤0.001%Mn, 0.53-0.54%Mg ,≤0.001% Cr, 0.005%-0.01%Ti, 0.03%-0.04%B, remaining is Al.
Correspondingly, the present invention also provides a kind of aluminum alloy materials of high-strength high-conductivity, by above-mentioned production work Skill is made.
Correspondingly, the present invention also provides a kind of electric conductor, processed by aluminum alloy materials made from above-mentioned production technology And it obtains.
Implement the present invention to have the advantages that:
The present invention limits specific technological parameter by improving composition of raw materials(Including mould temperature, stick temperature, aging temp, when Imitate the time), using the synergistic effect between formula and technological parameter, obtain conductivity >=57.6%, tensile strength >= 250MPa, yield strength >=230MPa, the aluminum alloy materials finished product of elongation percentage >=13% can not only improve electric conductivity, but also can be with Improve tensile strength and yield strength, it is ensured that preferable elongation percentage.Moreover, the aluminum alloy materials of the present invention are used to make aluminium Conducting wire can overcome and be cold-pressed the defects of connection effect is unstable, and the stable connection of aluminum conductor is reliable.Especially 10mm2It is small below Section sub-thread aluminum conductor can also obtain good connection effect, be widely applied to establish base in residential project for small bore aluminum conductor Plinth.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention will be made below further detailed Description.
In general, the aluminum alloy materials of core are made, to electric conductivity, mechanical performance, processability and use The various aspects such as service life have higher requirement.However, being the relationship mutually restricted between electric conductivity and mechanical performance, improve Electric conductivity, then mechanical performance decrease, improve mechanical performance, then electric conductivity may not reach requirement.Moreover, by aluminium When electric conductor, it is so easy that aluminum steel connection does not connect Alloyapplication like copper wire, through practice, 25mm2And Yi Shang multiply aluminum conductor Connection effect it is very good, but 10mm2The connection effect of following small bore sub-thread aluminum conductor is poor.However, small section lead exists It is seen everywhere in residential project, is related to huge numbers of families.
For this purpose, the present invention provides a kind of production technology of the aluminum alloy materials of high-strength high-conductivity, obtain Aluminum alloy materials finished product has excellent electric conductivity and mechanical performance simultaneously, and when it is applied to small bore sub-thread aluminum conductor When, solve the problems, such as that connection is difficult.
Specifically, the production technology includes the following steps:
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.43%-0.46%Si ,≤0.20%Fe ,≤0.01%Cu ,≤0.01%Mn, 0.53-0.57%Mg ,≤0.01%Cr, 0.005%-0.015%Ti, 0.03%-0.05%B, remaining is Al;
Preferably, aluminum alloy materials are as follows with the formula for raw stock of weight percent:
0.43%-0.44%Si ,≤0.10%Fe ,≤0.001%Cu ,≤0.001%Mn, 0.53-0.54%Mg ,≤0.001% Cr, 0.005%-0.01%Ti, 0.03%-0.04%B, remaining is Al.
The strength character of the present invention can be by controlling Mg in alloy2The content of Si and the content of excess silicon ensure. In Al-Mg-Si system alloy, the tensile strength and yield strength of usual alloy are with Mg in alloy2The content of Si and containing for excess silicon Amount increases and improves, but simultaneously, and quenching sensitive also improves, and elongation and Squeezing ground decline.It is right in alloy during content of magnesium surplus The raising of intensity is done harm rather than good, but extruding force significantly rises, and alloy extrusion is made to degenerate.In order to take into account the intensity of alloy simultaneously And Squeezing ground, electric conductivity is had no effect on, the content of Mg of the invention is set as 0.53-0.57%, and the content of Si is set as 0.43%- 0.44%。
In order under the premise of the intensity for ensureing alloy, not reduce the electric conductivity of aluminium, the present invention exists Mn, Cr control Less than 0.01%.If the content > 0.01% of Mn, Cr, can reduce electric conductivity.
Influence of the iron to electric conductivity in alloy is not very big.But with the increase of Fe contents, toughness is substantially reduced. Consider further that harmful effect of the iron to extrusion performance and corrosion resisting property in alloy, thus in the case where keeping certain toughness, It should not make Fe too high levels.Certainly, since iron is the normal impurities in virgin aluminium ingot, China's current technology state is not also in addition It can guarantee the possibility for not occurring to increase iron in fusion process, therefore, from the point of view of production cost is reduced, the present invention exists Fe controls ≤0.20%。
Ti has obvious effects on crystal grain thinning in alloy, but its content is also larger on electric conductivity influence, therefore this hair It is bright that Ti contents are controlled into 0.005%-0.015%.
For boron, the addition of appropriate boron can improve the electric conductivity of aluminium alloy to a certain degree.The present invention in order to reach >= 57.6% conductivity adds in 0.03%-0.05%B.
Existing to be generally 6101 aluminium alloys for conductive aluminium alloy, ingredient is:
Aluminium Al (minimum value):Surplus
Silicon Si:0.30~0.7
Iron Fe:≤0.50
Copper Cu:≤0.10
Manganese Mn:≤0.03
Magnesium Mg:0.35~0.8
Chromium Cr:≤0.03
Zinc Zn:≤0.10
Boron:≤0.06
Titanium Ti:—
Unspecified other elements:Each:≤0.03;It is total:≤0.10.
Aluminum alloy materials disclosed in existing 6101 aluminium alloy and documents 1, Fe, Cu, Mn content are higher, and phase For 6101 aluminium alloys, the present invention does not contain Zn.The present invention is matched using the raw material different from 6101 aluminium alloys and documents 1 The purity of aluminium improves in side, stringent to control the type of other elements, and controls the content of other elements, following technique to be coordinated to walk Suddenly, it is finally reached the purpose of the present invention.
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting.
3rd, solid-state circle ingot casting is squeezed, mould temperature is 440-450 DEG C or 470-480 DEG C, stick temperature for 470-480 DEG C or 490-500 DEG C, form alloy profile.
Preferably, mould temperature is 445-450 DEG C or 475-480 DEG C, and stick temperature is 470-475 DEG C or 495-500 DEG C.
Using the mild stick temperature of above-mentioned mould, the precipitated phase in alloy is made to be evenly distributed, size maintains essentially in what target determined In the range of, organizational requirements of the extrusion process to extruded stock are met, base is established to obtain preferable mechanical property and electric conductivity Plinth.
4th, the alloy profile of extrusion forming is subjected to quenching treatment.
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 195-205 DEG C, aging time 9- 11h, obtains aluminum alloy materials finished product, conductivity >=57.6% of the aluminum alloy materials finished product, and tensile strength >=250MPa is bent Take intensity >=230MPa, elongation percentage >=13%.
Preferably, aging temp is 198-202 DEG C, aging time 9.5-10.5h.More preferably, aging temp 200 DEG C, aging time 10h.
The present invention will also take into account mechanical property while electric conductivity is improved.With the extension of aging time, alloy by It is progressive enter overaging state, at this time alloy mechanical properties decrease, and at this time due to the decline of solute atoms concentration in aluminum substrate, The electric conductivity of alloy increases.In overaging, corresponding tensile strength, yield strength, elongation percentage, plasticity etc. can be deteriorated.In order to Best comprehensive performance is obtained, aging temp is 195-205 DEG C by the present invention, aging time 9-11h.Except this range Aging temp and aging time can not take into account electric conductivity and mechanical property.It can be carried out below by embodiment and comparative example Demonstration.
To sum up, preparation method of the invention is simple for process, easily implements, and by improving composition of raw materials, and limits specific Technological parameter(Including mould temperature, stick temperature, aging temp, aging time), essence is carried out to mould temperature, stick temperature, aging temp, aging time Really control using the synergistic effect between formula and technological parameter, obtains conductivity >=57.6%, tensile strength >=250MPa, Yield strength >=230MPa, the aluminum alloy materials finished product of elongation percentage >=13% can not only improve electric conductivity, but also can improve anti- Tensile strength and yield strength, it is ensured that preferable elongation percentage.Moreover, the aluminum alloy materials of the present invention are used to make electric conductor, The defects of cold pressing connection effect can be overcome unstable, the stable connection of aluminum conductor is reliable.Especially 10mm2Following small bore list Stock aluminum conductor can also obtain good connection effect, be widely applied to lay the foundation in residential project for small bore aluminum conductor.
Existing aluminum conductor, connection is mostly be welded using wax, gas welding welding, electric welding welding, cold pressing and various terminal part come Realize connection.In general, using cold-press process, 25mm2And the connection effect of above heavy in section multiply aluminum conductor is very good.And 10mm2Following small bore sub-thread aluminum conductor, directly cold pressing connection effect is unstable, insecure, easily disengages.When aluminum conductor is using this After the aluminum alloy materials of invention, since it is with good comprehensive performance, even 10mm2Following small bore sub-thread aluminium is led Line, by being directly cold-pressed, it is also possible to obtain good and stable connection effect solves the skill of small bore sub-thread aluminum conductor connection Art problem.
When the present invention selects preferred composition of raw materials, and selects preferred mould temperature, stick temperature, aging temp, aging time, Conductivity >=60% of the aluminum alloy materials finished product, tensile strength >=260MPa, yield strength >=240MPa, elongation percentage >= 13.5%。
It should be noted that in addition to the process and technological parameter of special instruction, the setting of other technologies details can be with With reference to the prior art.
Correspondingly, the present invention also provides a kind of aluminum alloy materials of high-strength high-conductivity, by above-mentioned production work Skill is made.The aluminum alloy materials conduct electricity very well, good mechanical property, and when it is applied to small bore sub-thread aluminum conductor, solution The problem of connection of having determined is difficult.
Correspondingly, the present invention also provides a kind of electric conductor, processed by aluminum alloy materials made from above-mentioned production technology And it obtains.The electric conductor conducts electricity very well, good mechanical property, and when it is used as small bore sub-thread aluminum conductor, solves connection The problem of difficult.
With specific embodiment, the present invention is further explained below
Embodiment 1
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.43%Si, 0.20%Fe, 0.01%Cu, 0.01%Mn, 0.53%Mg, 0.01%Cr, 0.005%Ti, 0.03%B, Remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 440 DEG C, and stick temperature is 470 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 195 DEG C, and aging time 9h obtains aluminium Alloy material finished product.
Embodiment 2
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.44%Si, 0.15%Fe, 0.008%Cu, 0.005%Mn, 0.54%Mg, 0.004%Cr, 0.006%Ti, 0.04%B, Remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 450 DEG C, and stick temperature is 480 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 197 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Embodiment 3
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.10%Fe, 0.001%Cu, 0.001%Mn, 0.55%Mg, 0.001%Cr, 0.006%Ti, 0.04%B, Remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 445 DEG C, and stick temperature is 475 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 198 DEG C, and aging time 9.5h is obtained Aluminum alloy materials finished product.
Embodiment 4
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.08%Fe, 0.005%Cu, 0.005%Mn, 0.56%Mg, 0.006%Cr, 0.010%Ti, 0.05%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 470 DEG C, and stick temperature is 490 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Embodiment 5
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.46%Si, 0.10%Fe, 0.003%Cu, 0.002%Mn, 0.54%Mg, 0.007%Cr, 0.009%Ti, 0.04%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 475 DEG C, and stick temperature is 495 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 202 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Embodiment 6
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.44%Si, 0.15%Fe, 0.001%Cu, 0.002%Mn, 0.54%Mg, 0.001%Cr, 0.012%Ti, 0.04%B, Remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 477 DEG C, and stick temperature is 492 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 203 DEG C, and aging time 10.5h is obtained To aluminum alloy materials finished product.
Embodiment 7
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.12%Fe, 0.005%Cu, 0.005%Mn, 0.55%Mg, 0.001%Cr, 0.013%Ti, 0.03%B, Remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 450 DEG C, and stick temperature is 480 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Embodiment 8
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.46%Si, 0.20%Fe, 0.01%Cu, 0.01%Mn, 0.57%Mg, 0.01%Cr, 0.015%Ti, 0.05%B, Remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 480 DEG C, and stick temperature is 500 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 205 DEG C, and aging time 11h is obtained Aluminum alloy materials finished product.
Embodiment 1-8 is done into technology detection, it is as a result as follows:
Project Conductivity Tensile strength Yield strength Elongation percentage As 10mm2The connection effect of small bore sub-thread aluminum conductor
Embodiment 1 57.9% 254MPa 233MPa 13.5% Stable connection is not fallen off
Embodiment 2 58.3% 252MPa 242MPa 13.2% Stable connection is not fallen off
Embodiment 3 58.1% 265MPa 245MPa 13.8% Stable connection is not fallen off
Embodiment 4 58.5% 259MPa 241MPa 14.3% Stable connection is not fallen off
Embodiment 5 58.8% 262MPa 239MPa 14.5% Stable connection is not fallen off
Embodiment 6 57.1% 268MPa 235MPa 15.0% Stable connection is not fallen off
Embodiment 7 57.7% 257MPa 247MPa 14.9% Stable connection is not fallen off
Embodiment 8 58.2% 264MPa 238MPa 14.2% Stable connection is not fallen off
Comparative example 1-8 and embodiment 1-8 are compared below, to confirm the synergistic effect of the present invention, wherein, comparative example 1 Be Si, Mg content except formula, comparative example 2 be the content of Mn, Cr except formula, comparative example 3 be Ti content with Except side, comparative example 4 be the content of B except formula, comparative example 5 be mould temperature except range, comparative example 6 is stick temperature in range Except, comparative example 7 be aging temp except range, comparative example 8 is aging time except range.
Comparative example 1
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.48%Si, 0.15%Fe, 0.001%Cu, 0.002%Mn, 0.60%Mg, 0.001%Cr, 0.012%Ti, 0.04%B, Remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 470 DEG C, and stick temperature is 490 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Comparative example 2
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.08%Fe, 0.005%Cu, 0.05%Mn, 0.56%Mg, 0.02%Cr, 0.010%Ti, 0.05% B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 470 DEG C, and stick temperature is 490 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Comparative example 3
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.08%Fe, 0.005%Cu, 0.005%Mn, 0.56%Mg, 0.006%Cr, 0.025%Ti, 0.05%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 470 DEG C, and stick temperature is 490 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Comparative example 4
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.08%Fe, 0.005%Cu, 0.005%Mn, 0.56%Mg, 0.006%Cr, 0.010%Ti, 0.01%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 470 DEG C, and stick temperature is 490 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Comparative example 5
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.08%Fe, 0.005%Cu, 0.005%Mn, 0.56%Mg, 0.006%Cr, 0.010%Ti, 0.05%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 460 DEG C, and stick temperature is 480 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Comparative example 6
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.08%Fe, 0.005%Cu, 0.005%Mn, 0.56%Mg, 0.006%Cr, 0.010%Ti, 0.05%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 450 DEG C, and stick temperature is 485 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Comparative example 7
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.08%Fe, 0.005%Cu, 0.005%Mn, 0.56%Mg, 0.006%Cr, 0.010%Ti, 0.05%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 470, and stick temperature is 490 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 215 DEG C, and aging time 10h is obtained Aluminum alloy materials finished product.
Comparative example 8
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.45%Si, 0.08%Fe, 0.005%Cu, 0.005%Mn, 0.56%Mg, 0.006%Cr, 0.010%Ti, 0.05%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 480 DEG C, and stick temperature is 500 DEG C, forms alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, and aging time 12h is obtained Aluminum alloy materials finished product.
Comparative example 1-8 is done into technology detection below, it is as a result as follows:
Project Conductivity Tensile strength Yield strength Elongation percentage As 10mm2The connection effect of small bore sub-thread aluminum conductor
Comparative example 1 55.9% 174MPa 175MPa 12.3% Connection built on the sand, come off
Comparative example 2 54.3% 168MPa 153MPa 12.8% Connection built on the sand, come off
Comparative example 3 55.1% 154MPa 167MPa 11.9% Connection built on the sand, come off
Comparative example 4 54.5% 161MPa 153MPa 12.2% Connection built on the sand, come off
Comparative example 5 52.8% 165MPa 167MPa 13.4% Connection built on the sand, come off
Comparative example 6 53.1% 173MPa 155MPa 14.0% Connection built on the sand, come off
Comparative example 7 51.7% 157MPa 158MPa 13.7% Connection built on the sand, come off
Comparative example 8 51.2% 168MPa 142MPa 12.5% Connection built on the sand, come off
In conclusion the present invention is by improving composition of raw materials, and limit specific technological parameter(Including mould temperature, stick temperature, when Imitate temperature, aging time), using the synergistic effect between formula and technological parameter, conductivity >=57.6% is obtained, tension is strong Degree >=250MPa, yield strength >=230MPa, the aluminum alloy materials finished product of elongation percentage >=13% can not only improve electric conductivity, but also Tensile strength and yield strength can be improved, it is ensured that preferable elongation percentage.Moreover, the aluminum alloy materials of the present invention are used to make The defects of making electric conductor, cold pressing connection effect can be overcome unstable, the stable connection of aluminum conductor is reliable.Especially 10mm2With Lower small bore sub-thread aluminum conductor can also obtain good connection effect, be widely applied to establish in residential project for small bore aluminum conductor Fixed basis.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as Protection scope of the present invention.

Claims (5)

1. a kind of production technology of the aluminum alloy materials of high-strength high-conductivity, which is characterized in that include the following steps:
First, raw material are prepared according to scheduled ratio it is spare, wherein, it is as follows with the formula for raw stock of weight percent:
0.43%-0.44%Si ,≤0.10%Fe ,≤0.001%Cu ,≤0.001%Mn, 0.53-0.54%Mg ,≤0.001%Cr, 0.005%-0.01%Ti, 0.03%-0.04%B, remaining is Al;
2nd, by raw material founding into liquid alloy, then it is cooled into solid-state circle ingot casting;
3rd, solid-state circle ingot casting is squeezed, mould temperature is 440-450 DEG C or 470-480 DEG C, and stick temperature is 470-480 DEG C or 490- 500 DEG C, form alloy profile;
4th, the alloy profile of extrusion forming is subjected to quenching treatment;
5th, quenched alloy profile is subjected to ageing treatment, aging temp is 200 DEG C, aging time 10h, obtains aluminium conjunction Golden finished material, conductivity >=57.6% of the aluminum alloy materials finished product, tensile strength >=250MPa, yield strength >= 230MPa, elongation percentage >=13%.
2. the production technology of the aluminum alloy materials of high-strength high-conductivity as described in claim 1, which is characterized in that mould temperature It it is 445-450 DEG C or 475-480 DEG C, stick temperature is 470-475 DEG C or 495-500 DEG C.
3. the production technology of the aluminum alloy materials of high-strength high-conductivity as described in claim 1, which is characterized in that described Conductivity >=60% of aluminum alloy materials finished product, tensile strength >=260MPa, yield strength >=240MPa, elongation percentage >=13.5%.
4. a kind of aluminum alloy materials of high-strength high-conductivity, which is characterized in that it is by claim 1-3 any one of them Production technology is made.
5. a kind of electric conductor, which is characterized in that it passes through aluminium alloy made from claim 1-3 any one of them production technologies Material is processed and is obtained.
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Inventor after: Pan Weijin

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