CN104538116B - A kind of high intensity, the production method of high-conductivity aluminum alloy wire - Google Patents
A kind of high intensity, the production method of high-conductivity aluminum alloy wire Download PDFInfo
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- CN104538116B CN104538116B CN201410774396.5A CN201410774396A CN104538116B CN 104538116 B CN104538116 B CN 104538116B CN 201410774396 A CN201410774396 A CN 201410774396A CN 104538116 B CN104538116 B CN 104538116B
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 141
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 47
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 40
- 238000007872 degassing Methods 0.000 claims abstract description 38
- 238000000137 annealing Methods 0.000 claims abstract description 31
- 230000032683 aging Effects 0.000 claims abstract description 27
- 238000009749 continuous casting Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 230000004913 activation Effects 0.000 claims description 33
- 239000011777 magnesium Substances 0.000 claims description 25
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 20
- 239000004411 aluminium Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000000919 ceramic Substances 0.000 claims description 16
- 229910002804 graphite Inorganic materials 0.000 claims description 16
- 239000010439 graphite Substances 0.000 claims description 16
- 239000012535 impurity Substances 0.000 claims description 16
- 229910052786 argon Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000005275 alloying Methods 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000000470 constituent Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910021365 Al-Mg-Si alloy Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
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Abstract
A kind of high intensity, the production method of high-conductivity aluminum alloy wire, comprise the steps of: prepares aluminum liquid, prepare Mg mass percentage content is 1.2 1.8% and Si mass percentage content is 1.0 1.5% aluminum alloy melt, the outer twin-stage degasification of stove and double-stage filtering, ultrasonic continuous casting and rolling, annealing, drawing and Ageing Treatment.The present invention is by improving Mg, the content of Si element, and utilize the outer twin-stage degasification of stove and double-stage filtering to improve the degree of purity of aluminum alloy melt, the aluminium alloy conductor making production has high intensity and high conductivity simultaneously, and use ultrasonic continuous casting and rolling, solve the problem that Aluminum alloy round bar is easily broken off, enable the enterprise to continuously, stably produce high intensity, the aluminium alloy conductor of high conductivity, the tensile strength of aluminium alloy conductor is 330 365MPa, conductivity is 56 58%IACS, meet distance, Great span overhead transmission line builds the needs to all aluminium alloy twisted wire, reduce the electric energy loss of transmission line of electricity.
Description
Technical field
The invention belongs to aluminium alloy conductor and manufacture field, be specifically related to a kind of high intensity, the production method of high-conductivity aluminum alloy wire.
Background technology
The steel-cored aluminium strand that the existing distance of China, the cable of Great span overhead transmission line are mainly processed by fine aluminium wire, the electric energy loss of this steel-cored aluminium strand is bigger.In order to reduce the electric energy loss of transmission line of electricity, manufacture all aluminium alloy twisted wire in the urgent need to exploitation high intensity, the aluminium alloy conductor of high conductivity, replace traditional steel-cored aluminium strand.But the production difficulty of high intensity, high-conductivity aluminum alloy wire is relatively big, reason is the intensity of aluminium alloy conductor and conductivity is difficult to reach high value simultaneously.
Finding literature retrieval, in order to improve the intensity of aluminium alloy conductor, prior art is generally added the units such as substantial amounts of Fe, Cu, Zn, Zr, Sc, Cr, Ti, Mn and is usually strengthened the intensity of aluminium alloy conductor.But, to add the conductivity that these alloying elements substantial amounts of can enable aluminum alloy to wire and decline to a great extent, conductivity is extremely difficult to high value.
It is all that the method using the outer single-stage degasification of flux-refining in stove, stove or single-stage to filter carrys out purifying aluminum alloy liquid that prior art produces aluminium alloy conductor.In order to improve the conductivity of aluminium alloy conductor, prior art is generally added the rare earth element such as B element and La, Ce, Y and is carried out further purifying aluminum alloy liquid, reaches the purpose of degasification, remove impurity.Adding these a small amount of elements very limited to the clean-up effect of aluminum alloy melt, and add these elements substantial amounts of and not only can increase the production cost of aluminium alloy conductor, declining occurs in the conductivity that also can enable aluminum alloy to wire.
Al-Mg-Si alloy is a kind of heat-treatable strengthened wrought aluminium alloy, and Mg, Si constituent content is the highest, Mg after Ageing Treatment2Si hardening constituent is the most, and the intensity of aluminium alloy is the highest.But being as the rising of Mg, Si constituent content, continuous casting and rolling Aluminum alloy round bar is susceptible to fracture, and the stability that can have a strong impact on production is subject to.Mg, Si constituent content of the aluminium alloy conductor that enterprise produces at present will be typically less than 0.9%, and the tensile strength of wire is less than 300MPa, and conductivity is less than 55%IACS, it is difficult to meet distance, the requirement to all aluminium alloy twisted wire of the Great span overhead transmission line.
Summary of the invention
Present invention aims to above-mentioned existing problems and deficiency, a kind of high intensity, the production method of high-conductivity aluminum alloy wire are provided, enabling the enterprise to continuously and stably produce aluminium alloy conductor, the tensile strength of aluminium alloy conductor is 330-365MPa, and conductivity is 56-58%IACS.
The technical scheme is that and be achieved in that:
High intensity of the present invention, the production method of high-conductivity aluminum alloy wire, be characterized in comprising the steps:
The first step: preparing aluminum liquid: the aluminium ingot selecting Al mass percentage content to be 99.8% is fused into aluminum liquid in joining aluminium melting furnace, aluminum liquid, at 760-780 DEG C, is transferred in holding furnace by control temperature of aluminum liquid by chute；
Second step: preparation aluminum alloy melt: the magnesium ingot selecting Mg mass percentage content to be 99.9% and silicon metal that Si mass percentage content is 99.9% join stirring fusing in holding furnace, be configured to Mg mass percentage content be 1.2-1.8%, Si mass percentage content be the aluminum alloy melt of 1.0-1.5%；
3rd step: the outer twin-stage degasification of stove and double-stage filtering: control aluminum alloy melt temperature at 740-760 DEG C, aluminum alloy melt in holding furnace is flowed into chute, flow successively through the rotation graphite rotator and foamed ceramic filter plate being arranged on chute, carry out one-level degasification and single filter, the rotary speed of graphite rotator is 200-300 rev/min, the pressure of argon is 300KPa, and the porosity of foamed ceramic filter plate is 50-60ppi；Aluminum alloy melt flows successively through rotary impreller degassing case and tubular filter case again, carry out two grades of degasification and cascade filtration, the rotary speed of the graphite rotator in rotary impreller degassing case is 400-500 rev/min, the pressure of argon is 400KPa, and the porosity of the ceramic filter tube in tubular filter case is 120-140ppi；
4th step: ultrasonic continuous casting and rolling: after the temperature of two grades of degasification and the aluminum alloy melt of cascade filtration controls at 680-700 DEG C, by guiding gutter, aluminum alloy melt is injected in the race of conticaster crystallizing wheel being provided with ultrasonic activation bar, under ul-trasonic irradiation, aluminum alloy melt is continuously cast into continuous casting billet, continuous casting billet enters tandem mill after aligning and is rolled into the Aluminum alloy round bar of a diameter of 9.5 millimeters, a diameter of 10 millimeters of ultrasonic activation bar, the material of ultrasonic activation bar is titanium alloy, ultrasonic output frequency is 30kHz, output is 400-500 watt, the finish to gauge speed of tandem mill is 7-8 meter per second；
5th step: annealing: Aluminum alloy round bar being put into annealing furnace and makes annealing treatment, annealing temperature is 530-540 DEG C, and annealing time is 2-3 hour；
6th step: drawing: the Aluminum alloy round bar after annealing is put into the aluminium alloy conductor pulling into a diameter of 1-5 millimeter on continuous drawing device, and drawing speed is 16-18 meter per second；
7th step: Ageing Treatment: aluminium alloy conductor being put into aging furnace and carries out ageing strengthening process, aging temp is 180-190 DEG C, and aging time is 10-12 hour, obtains the aluminium alloy conductor of high-strength high-conductivity.
The alloying component of above-mentioned aluminium alloy conductor and mass percentage content be: Mg:1.2-1.8%, Si:1.0-1.5%, Fe:0.1-0.2%, Zn:0.04-0.07%, Cu:0.03-0.05%, Mn:0.01-0.03%, remaining is Al and other impurity element inevitable, in described inevitably other impurity element, the content of every kind of element is all≤0.01%, inevitably total amount≤0.05% of other impurity element.
Above-mentioned ultrasonic activation bar is to be arranged at the aluminum alloy melt inlet of conticaster obliquely, the lower end of ultrasonic activation bar is positioned at the race center of conticaster crystallizing wheel, its upper end is fixing with ultrasonic transducer to be connected, and ultrasonic transducer is connected with supersonic generator by cable.
The present invention compared with prior art, has the advantage that
(1) present invention improves Mg, Si constituent content of aluminium alloy conductor, the intensity of aluminium alloy conductor has been greatly enhanced, avoid adding the elements such as Fe, Cu, Zn, Zr, Sc, Cr, Ti, Mn and causing the impact on aluminium alloy conductor conductivity, enable aluminum alloy to wire and obtain high intensity and high conductivity simultaneously；
(2) present invention uses the outer twin-stage degasification of stove and double-stage filtering to increase substantially the degree of purity of aluminum alloy melt, improves the conductivity of aluminium alloy conductor further.The air content that wherein can enable aluminum alloy to liquid after the winding-up one-level degasification of chute rotation graphite rotator is reduced to 0.14 milliliter/100 grams aluminum, the air content that can enable aluminum alloy to liquid after the two grades of degasification of rotary impreller degassing case is reduced to 0.11 milliliter/100 grams aluminum, the non-metallic inclusion of more than 15 microns in removable aluminum alloy melt after chute foamed ceramic filter plate single filter, can remove the non-metallic inclusion of more than 1 micron in aluminum alloy melt after earthenware tubular filter case cascade filtration；
(3) present invention uses ultrasonic continuous casting and rolling to produce Aluminum alloy round bar, by installing ultrasonic activation bar at conticaster aluminum alloy melt inlet, aluminum alloy melt is acted in ultrasound wave is incorporated into the race of conticaster crystallizing wheel, utilize effect of vibration and the sound cavitation effect of ultrasound wave, can the crystal grain of significantly refining aluminum alloy continuous casting billet, improve plasticity and dense structure's degree of aluminium alloy continuous casting billet, prevent continuous casting and rolling Aluminum alloy round bar from rupturing；
(4) use the present invention that enterprise can be made continuously and stably to produce the aluminium alloy conductor of high intensity, high conductivity, the tensile strength of aluminium alloy conductor is 330-365MPa, conductivity is 56-58%IACS, meet distance, Great span overhead transmission line builds the needs to all aluminium alloy twisted wire, reduces the electric energy loss of transmission line of electricity.
The present invention is further illustrated below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the production technological process of the present invention.
Detailed description of the invention
Embodiment 1:
Use the aluminium alloy conductor that the present invention produces a diameter of 5 millimeters.Main production equipments is 15 tons of natural gas aluminium melting furnace, 15 tons of kettle furnaces, four-wheel round belt continuous casting machine, 15 frame Y type tandem mills.A diameter of 1.5 meters of conticaster crystallizing wheel, the race cross-sectional area of conticaster crystallizing wheel is 2400 square millimeters, ultrasonic activation bar it is disposed with obliquely at the aluminum alloy melt inlet of conticaster, the lower end of this ultrasonic activation bar is positioned at the race center of conticaster crystallizing wheel, its upper end is fixing with ultrasonic transducer to be connected, ultrasonic transducer is connected with supersonic generator by cable, and ultrasonic transducer is fixed on the foot rest standing on ground together with ultrasonic activation bar, a diameter of 10 millimeters of ultrasonic activation bar, the material of ultrasonic activation bar is TC4 titanium alloy.The technological process of production is as it is shown in figure 1, its production method is as follows:
The first step: prepare aluminum liquid: weigh 10 tons, Al mass percentage content be 99.8% aluminium ingot join aluminium melting furnace in be fused into aluminum liquid, control fine aluminium liquid temp at 760 DEG C, by chute, aluminum liquid transferred in holding furnace；
Second step: preparation aluminum alloy melt: weighs 122.7 kilograms, Mg mass percentage content be 99.9% magnesium ingot and 102.2 kilograms, Si mass percentage content be 99.9% silicon metal join stirring in holding furnace and melt, be configured to Mg mass percentage content be 1.2%, Si mass percentage content be the aluminum alloy melt of 1.0%；
3rd step: the outer twin-stage degasification of stove and double-stage filtering: control aluminum alloy melt temperature at 740 DEG C, aluminum alloy melt in holding furnace is flowed into chute, flow successively through the rotation graphite rotator and foamed ceramic filter plate being arranged on chute, carry out one-level degasification and single filter, the rotary speed of graphite rotator is 200 revs/min, the pressure of argon is 300KPa, and the porosity of foamed ceramic filter plate is 50ppi；Aluminum alloy melt flows successively through rotary impreller degassing case and tubular filter case again, carry out two grades of degasification and cascade filtration, the rotary speed of the graphite rotator in rotary impreller degassing case is 400 revs/min, and the pressure of argon is 400KPa, and the porosity of the ceramic filter tube in tubular filter case is 120ppi；
4th step: ultrasonic continuous casting and rolling: after the temperature of two grades of degasification and the aluminum alloy melt of cascade filtration controls at 680 DEG C, by guiding gutter, aluminum alloy melt is injected in the race of conticaster crystallizing wheel being provided with ultrasonic activation bar, under ul-trasonic irradiation, aluminum alloy melt is continuously cast into continuous casting billet, continuous casting billet enters tandem mill after aligning and is rolled into the Aluminum alloy round bar of a diameter of 9.5 millimeters, a diameter of 10 millimeters of ultrasonic activation bar, the material of ultrasonic activation bar is titanium alloy, ultrasonic output frequency is 30kHz, output is 400 watts, the finish to gauge speed of tandem mill is 8 meter per seconds；
5th step: annealing: Aluminum alloy round bar being put into annealing furnace and makes annealing treatment, annealing temperature is 530 DEG C, and annealing time is 2 hours；
6th step: drawing: the Aluminum alloy round bar after annealing is put into the aluminium alloy conductor pulling into a diameter of 5 millimeters on continuous drawing device, and drawing speed is 18 meter per seconds；
7th step: Ageing Treatment: aluminium alloy conductor is put into aging furnace and carries out ageing strengthening process, aging temp is 180 DEG C, and aging time is 10 hours, obtains high-strength high-conductivity aluminium alloy conductor.
Through analyzing detection, in the present embodiment, the composition of aluminium alloy conductor is by mass percentage: the Mg of 1.2%, the Si of 1.0%, the Fe of 0.2%, the Zn of 0.07%, the Cu of 0.05%, the Mn of 0.03%, remaining is Al and other impurity element inevitable, and in described inevitably other impurity element, the content of every kind of element is all≤0.01%, inevitably total amount≤0.05% of other impurity element.The tensile strength of aluminium alloy conductor is 330MPa, and conductivity is 56%IACS.
Embodiment 2:
Use the aluminium alloy conductor that the present invention produces a diameter of 2.5 millimeters.Main production equipments is 15 tons of natural gas aluminium melting furnace, 15 tons of kettle furnaces, four-wheel round belt continuous casting machine, 15 frame Y type tandem mills.A diameter of 1.5 meters of conticaster crystallizing wheel, the race cross-sectional area of conticaster crystallizing wheel is 2400 square millimeters, ultrasonic activation bar it is disposed with obliquely at the aluminum alloy melt inlet of conticaster, the lower end of this ultrasonic activation bar is positioned at the race center of conticaster crystallizing wheel, its upper end is fixing with ultrasonic transducer to be connected, ultrasonic transducer is connected with supersonic generator by cable, and ultrasonic transducer is fixed on the foot rest standing on ground together with ultrasonic activation bar, a diameter of 10 millimeters of ultrasonic activation bar, the material of ultrasonic activation bar is TC4 titanium alloy.The technological process of production is as it is shown in figure 1, its production method is as follows:
The first step: prepare aluminum liquid: weigh 10 tons, Al mass percentage content be 99.8% aluminium ingot join aluminium melting furnace in be fused into aluminum liquid, control temperature of aluminum liquid at 770 DEG C, by chute, aluminum liquid transferred in holding furnace；
Second step: preparation aluminum alloy melt: weighs 153.6 kilograms, Mg mass percentage content be 99.9% magnesium ingot and 133.2 kilograms, Si mass percentage content be 99.9% silicon metal join stirring in holding furnace and melt, be configured to Mg mass percentage content be 1.5%, Si mass percentage content be the aluminum alloy melt of 1.3%；
3rd step: the outer twin-stage degasification of stove and double-stage filtering: control aluminum alloy melt temperature at 750 DEG C, aluminum alloy melt in holding furnace is flowed into chute, flow successively through the rotation graphite rotator and foamed ceramic filter plate being arranged on chute, carry out one-level degasification and single filter, the rotary speed of graphite rotator is 250 revs/min, the pressure of argon is 300KPa, and the porosity of foamed ceramic filter plate is 60ppi；Aluminum alloy melt flows successively through rotary impreller degassing case and tubular filter case again, carry out two grades of degasification and cascade filtration, the rotary speed of the graphite rotator in rotary impreller degassing case is 450 revs/min, and the pressure of argon is 400KPa, and the porosity of the ceramic filter tube in tubular filter case is 140ppi；
4th step: ultrasonic continuous casting and rolling: after the temperature of two grades of degasification and the aluminum alloy melt of cascade filtration controls at 690 DEG C, by guiding gutter, aluminum alloy melt is injected in the race of conticaster crystallizing wheel being provided with ultrasonic activation bar, under ul-trasonic irradiation, aluminum alloy melt is continuously cast into continuous casting billet, continuous casting billet enters tandem mill after aligning and is rolled into the Aluminum alloy round bar of a diameter of 9.5 millimeters, a diameter of 10 millimeters of ultrasonic activation bar, the material of ultrasonic activation bar is titanium alloy, ultrasonic output frequency is 30kHz, output is 450 watts, the finish to gauge speed of tandem mill is 7.5 meter per seconds；
5th step: annealing: Aluminum alloy round bar being put into annealing furnace and makes annealing treatment, annealing temperature is 535 DEG C, and annealing time is 2.5 hours；
6th step: drawing: the Aluminum alloy round bar after annealing is put into the aluminium alloy conductor pulling into a diameter of 2.5 millimeters on continuous drawing device, and drawing speed is 17 meter per seconds；
7th step: Ageing Treatment: aluminium alloy conductor is put into aging furnace and carries out ageing strengthening process, aging temp is 185 DEG C, and aging time is 11 hours, obtains high-strength high-conductivity aluminium alloy conductor.
Through analyzing detection, in the present embodiment, the composition of aluminium alloy conductor is by mass percentage: the Mg of 1.5%, the Si of 1.3%, the Fe of 0.15%, the Zn of 0.05%, the Cu of 0.03%, the Mn of 0.01%, remaining is Al and other impurity element inevitable, and in described inevitably other impurity element, the content of every kind of element is all≤0.01%, inevitably total amount≤0.05% of other impurity element.The tensile strength of aluminium alloy conductor is 345MPa, and conductivity is 57%IACS.
Embodiment 3:
Use the aluminium alloy conductor that the present invention produces a diameter of 1 millimeter.Main production equipments is 15 tons of natural gas aluminium melting furnace, 15 tons of kettle furnaces, four-wheel round belt continuous casting machine, 15 frame Y type tandem mills.A diameter of 1.5 meters of conticaster crystallizing wheel, the race cross-sectional area of conticaster crystallizing wheel is 2400 square millimeters, ultrasonic activation bar it is disposed with obliquely at the aluminum alloy melt inlet of conticaster, the lower end of this ultrasonic activation bar is positioned at the race center of conticaster crystallizing wheel, its upper end is fixing with ultrasonic transducer to be connected, ultrasonic transducer is connected with supersonic generator by cable, and ultrasonic transducer is fixed on the foot rest standing on ground together with ultrasonic activation bar, a diameter of 10 millimeters of ultrasonic activation bar, the material of ultrasonic activation bar is TC4 titanium alloy.The technological process of production is as it is shown in figure 1, its production method is as follows:
The first step: prepare aluminum liquid: weigh 10 tons, Al mass percentage content be 99.8% aluminium ingot join aluminium melting furnace in be fused into aluminum liquid, control temperature of aluminum liquid at 780 DEG C, by chute, aluminum liquid transferred in holding furnace；
Second step: preparation aluminum alloy melt: weighs 154.1 kilograms, Mg mass percentage content be 99.9% magnesium ingot and 128.4 kilograms, Si mass percentage content be 99.9% silicon metal join stirring in holding furnace and melt, be configured to Mg mass percentage content be 1.8%, Si mass percentage content be the aluminum alloy melt of 1.5%；
3rd step: the outer twin-stage degasification of stove and double-stage filtering: control aluminum alloy melt temperature at 760 DEG C, aluminum alloy melt in holding furnace is flowed into chute, flow successively through the rotation graphite rotator and foamed ceramic filter plate being arranged on chute, carry out one-level degasification and single filter, the rotary speed of graphite rotator is 300 revs/min, the pressure of argon is 300KPa, and the porosity of foamed ceramic filter plate is 60ppi；Aluminum alloy melt flows successively through rotary impreller degassing case and tubular filter case again, carry out two grades of degasification and cascade filtration, the rotary speed of the graphite rotator in rotary impreller degassing case is 500 revs/min, and the pressure of argon is 400KPa, and the porosity of the ceramic filter tube in tubular filter case is 140ppi；
4th step: ultrasonic continuous casting and rolling: after the temperature of two grades of degasification and the aluminum alloy melt of cascade filtration controls at 700 DEG C, by guiding gutter, aluminum alloy melt is injected in the race of conticaster crystallizing wheel being provided with ultrasonic activation bar, under ul-trasonic irradiation, aluminum alloy melt is continuously cast into continuous casting billet, continuous casting billet enters tandem mill after aligning and is rolled into the Aluminum alloy round bar of a diameter of 9.5 millimeters, a diameter of 10 millimeters of ultrasonic activation bar, the material of ultrasonic activation bar is titanium alloy, ultrasonic output frequency is 30kHz, output is 500 watts, the finish to gauge speed of tandem mill is 7 meter per seconds；
5th step: annealing: Aluminum alloy round bar being put into annealing furnace and makes annealing treatment, annealing temperature is 540 DEG C, and annealing time is 3 hours；
6th step: drawing: the Aluminum alloy round bar after annealing is put into the aluminium alloy conductor pulling into a diameter of 1 millimeter on continuous drawing device, and drawing speed is 16 meter per seconds；
7th step: Ageing Treatment: aluminium alloy conductor is put into aging furnace and carries out ageing strengthening process, aging temp is 190 DEG C, and aging time is 12 hours, obtains high-strength high-conductivity aluminium alloy conductor.
Through analyzing detection, in the present embodiment, the composition of aluminium alloy conductor is by mass percentage: the Mg of 1.8%, the Si of 1.5%, the Fe of 0.1%, the Zn of 0.04%, the Cu of 0.04%, the Mn of 0.01%, remaining is Al and other impurity element inevitable, and in described inevitably other impurity element, the content of every kind of element is all≤0.01%, inevitably total amount≤0.05% of other impurity element.The tensile strength of aluminium alloy conductor is 365MPa, and conductivity is 58%IACS.
The present invention is described by embodiment, but do not limit the invention, with reference to description of the invention, other changes of the disclosed embodiments, as the professional person for this area is readily apparent that, such change should belong within the scope of the claims in the present invention restriction.
Claims (1)
1. a high intensity, the production method of high-conductivity aluminum alloy wire, it is characterised in that:
The alloying component of this aluminium alloy conductor and mass percentage content be: Mg:1.2-1.8%, Si:1.0-1.5%, Fe:0.1-0.2%, Zn:0.04-0.07%, Cu:0.03-0.05%, Mn:0.01-0.03%, remaining is Al and other impurity element inevitable, in other impurity element inevitable, the content of every kind of element is all≤0.01%, inevitably total amount≤0.05% of other impurity element；
The production method of this aluminium alloy conductor comprises the steps of:
The first step: preparing aluminum liquid: the aluminium ingot selecting Al mass percentage content to be 99.8% is fused into aluminum liquid in joining aluminium melting furnace, aluminum liquid, at 760-780 DEG C, is transferred in holding furnace by control temperature of aluminum liquid by chute；
Second step: preparation aluminum alloy melt: the magnesium ingot selecting Mg mass percentage content to be 99.9% and silicon metal that Si mass percentage content is 99.9% join stirring fusing in holding furnace, be configured to Mg mass percentage content be 1.2-1.8%, Si mass percentage content be the aluminum alloy melt of 1.0-1.5%；
3rd step: the outer twin-stage degasification of stove and double-stage filtering: control aluminum alloy melt temperature at 740-760 DEG C, aluminum alloy melt in holding furnace is flowed into chute, flow successively through the rotation graphite rotator and foamed ceramic filter plate being arranged on chute, carry out one-level degasification and single filter, the rotary speed of graphite rotator is 200-300 rev/min, the pressure of argon is 300KPa, and the porosity of foamed ceramic filter plate is 50-60ppi；Aluminum alloy melt flows successively through rotary impreller degassing case and tubular filter case again, carry out two grades of degasification and cascade filtration, the rotary speed of the graphite rotator in rotary impreller degassing case is 400-500 rev/min, the pressure of argon is 400KPa, and the porosity of the ceramic filter tube in tubular filter case is 120-140ppi；
4th step: ultrasonic continuous casting and rolling: the temperature through two grades of degasification and the aluminum alloy melt of cascade filtration controls at 680-700 DEG C, by guiding gutter, aluminum alloy melt is injected in the race of conticaster crystallizing wheel being provided with ultrasonic activation bar, under ul-trasonic irradiation, aluminum alloy melt is continuously cast into continuous casting billet, continuous casting billet enters tandem mill after aligning and is rolled into the Aluminum alloy round bar of a diameter of 9.5 millimeters, a diameter of 10 millimeters of ultrasonic activation bar, the material of ultrasonic activation bar is titanium alloy, ultrasonic output frequency is 30kHz, output is 400-500 watt, the finish to gauge speed of tandem mill is 7-8 meter per second；
5th step: annealing: Aluminum alloy round bar being put into annealing furnace and makes annealing treatment, annealing temperature is 530-540 DEG C, and annealing time is 2-3 hour；
6th step: drawing: the Aluminum alloy round bar after annealing is put into the aluminium alloy conductor pulling into a diameter of 1-5 millimeter on continuous drawing device, and drawing speed is 16-18 meter per second；
7th step: Ageing Treatment: aluminium alloy conductor being put into aging furnace and carries out ageing strengthening process, aging temp is 180-190 DEG C, and aging time is 10-12 hour, obtains the aluminium alloy conductor of high-strength high-conductivity.
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| CN105369080B (en) * | 2015-10-13 | 2017-11-07 | 国家电网公司 | A kind of energy-saving wire high strength alumin ium alloy silk preparation method |
| CN105838929B (en) * | 2016-03-31 | 2017-07-28 | 广东省材料与加工研究所 | A kind of rare-earth aluminum alloy lead wire and its manufacture method |
| JP6112437B1 (en) | 2016-10-31 | 2017-04-12 | 住友電気工業株式会社 | Aluminum alloy wire, aluminum alloy stranded wire, covered wire, and wire with terminal |
| CN107338378A (en) * | 2017-07-20 | 2017-11-10 | 合肥安力电力工程有限公司 | A kind of preparation method of aluminium alloy conductor |
| CN109666878B (en) * | 2019-01-18 | 2020-09-04 | 中南大学 | Method for preparing high-strength and high-toughness magnesium alloy wire by baking |
| CN113684388B (en) * | 2021-08-27 | 2022-04-26 | 江苏中天科技股份有限公司 | High-conductivity soft aluminum monofilament and preparation method thereof |
| CN115896653B (en) * | 2022-12-21 | 2024-04-02 | 广东领胜新材料科技有限公司 | Continuous casting and rolling device and method for high-strength aluminum alloy round rod |
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Correction item: Patentee|Address|Patentee Correct: Guangdong Institute Of Materials And Processing|510651 363 Changxing Road, Tianhe District, Guangzhou City, Guangdong Province|GUANGDONG SHINE CABLES Co.,Ltd. False: Guangdong new Yaguang Cable Co.,Ltd.|511500 Shatian Industrial Zone, Qingcheng District, Qingyuan City, Guangdong Province|GUANGDONG SHINE CABLES Co.,Ltd. Number: 19-01 Volume: 37 |
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Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of materials and processing, Guangdong Academy of Sciences Patentee after: Guangdong new Yaguang Cable Co.,Ltd. Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangdong Institute Of Materials And Processing Patentee before: GUANGDONG SHINE CABLES Co.,Ltd. |
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