CN106834820A - Strong height leads aluminium alloy single line and preparation method thereof in one kind - Google Patents
Strong height leads aluminium alloy single line and preparation method thereof in one kind Download PDFInfo
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- CN106834820A CN106834820A CN201611194974.3A CN201611194974A CN106834820A CN 106834820 A CN106834820 A CN 106834820A CN 201611194974 A CN201611194974 A CN 201611194974A CN 106834820 A CN106834820 A CN 106834820A
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- aluminium alloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
Abstract
Aluminium alloy single line and preparation method thereof is led the invention discloses strong height in one kind, wherein, its constituent mass percentage is：Magnesium Mg is 0.30 ~ 0.50%, and silicon Si is 0.30 ~ 0.60%, and mixed rare earth is 0.10 ~ 0.30%, erbium Er is 0.05 ~ 0.30%, and strontium Sr is 0.01 ~ 0.05%, and boron is 0.06 ~ 0.10%, titanium, vanadium, chromium, manganese impurity element summation be less than 0.01%, other impurities constituent content≤0.10%, remaining is aluminium；Its preparation method is by the fusing of 99.7% remelting fine aluminium ingot, after insulation, to sequentially adding other dispensings in melt, skimmed, refined, being stood, being applied pulse current, casting, being made casting rod, Homogenization Treatments are carried out to casting rod, it is squeezed into Aluminum alloy pole material, wire drawing machine is drawn into aluminium alloy single line, and Ageing Treatment finally gives aluminium alloy single line finished product；Aluminium alloy single line strength prepared by the present invention is more than 245Mpa, and conductance is more than 60.5%IACS, and elongation is more than 3.9%.
Description
Technical field
The present invention relates to aluminium alloy cable technical field, and in particular to strong height leads aluminium alloy single line and its preparation side in one kind
Method.
Background technology
With the strategic plan of " transferring electricity from the west to the east, north and south supply mutually, national network ", transmission line of electricity to long distance ionization, high-pressure trend,
High capacity develops, therefore proposes requirement higher for transmission pressure.At present, China's high pressure, super-pressure and extra-high pressure rack
Empty transmission line of electricity often uses steel-cored aluminium strand, and the production of this kind of wire and application technology are mature on the whole, but its transmission of electricity line loss is high, corrosion resistant
Erosion poor performance, current-carrying capacity is low.More conventional aluminium steel conductor, middle intensity all aluminum alloy conductor has many merits：1. draw anharmonic ratio big,
Sag is good, invests low；2. elongation percentage is high, and anti-overload ability and fatigue properties are good；3. high-temperature behavior is good, and loss of strength is few；④
Compared with ACSR, when horizontal loading is suitable, vertical load reduces 10%；5. splicing fitting is simple, easy construction.6. hardness is high, resistance to
Damage；7. energy loss is few；8. decay resistance and vibration-resistant property are good.Therefore, the strength aluminium alloy in use in transmission line of electricity
Wire meets the demand for development of construction " resource-conserving, environmentally friendly " society, possesses good social benefit, to natural ring
The protection in border, the economic benefit of power grid construction and safe operation important in inhibiting.
Middle strength aluminum alloy single line mainly has in two：Intensity aluminium in strength aluminium alloy single line and heat treatment type in nonheat-treatable
Alloy single line.Although centering strength aluminum alloy single line has numerous studies and attention in recent years for the country, compared with foreign countries, in processing technology
Still there is a big difference with alloying.The country has carried out many researchs mainly for strength aluminium alloy single line in heat treatment type, closes
The heat treatment type of the main still Al-Mg-Si-X systems of gold exploitation.
Through retrieval, the Chinese invention patent of Publication No. 104805321A, strong height leads aluminium alloy during the invention is related to one kind
Single line and preparation method thereof, wherein：" single line is made up of the element of following weight percents:Iron Fe is 0.3 ~ 0.5%, magnesium Mg
Be 0.2 ~ 0.3%, silicon Si be 0.1 ~ 0.2%, mischmetal be 0.03 ~ 0.5%, beryllium Be be 0.08 ~ 0.12% remaining be aluminium." should
The preparation method of single line is：" prepare raw material be put into smelting furnace in, intensification, stirring, degasification melting, slagging-off, continuous casting and rolling is into aluminium
Alloy pole stock, wire drawing machine are drawn into aluminium alloy single line." tensile strength of the aluminium alloy single line reaches 240-255MPa, conductance
More than 59.2%IACS is can reach, elongation reaches 2.0%-3.5%.The shortcoming of the patent is the toxicity of beryllium, fragility, expensive
Etc. the production and application that limit the aluminium alloy wire containing beryllium.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, and provide that a kind of tensile strength is high, electrical conductivity it is high in
Strong height leads aluminium alloy single line and preparation method thereof.
The object of the present invention is achieved like this：Strong height leads aluminium alloy single line in one kind, it is described in strong height lead aluminium alloy
The component of single line is according to mass percent：Magnesium Mg is 0.30 ~ 0.50%, and silicon Si is 0.30 ~ 0.60%, and mixed rare earth is 0.10
~ 0.30%, erbium Er are 0.05 ~ 0.30%, and strontium Sr is 0.01 ~ 0.05%, and boron is 0.06 ~ 0.10%, titanium, vanadium, chromium, manganese impurity element
Summation is less than 0.01% other impurities constituent content≤0.10%；Remaining is aluminium.
2nd, strong height leads aluminium alloy single line in one kind as claimed in claim 1, it is characterised in that：Described mixed rare earth
It is made up of following elements：Ce:30~40%；La:60~70%.
3rd, strong height leads the preparation method of aluminium alloy single line in a kind of, comprises the following steps：
Step one：The remelting fine aluminium ingot of preheating is put into resistance furnace, heating melts it, and is incubated between 720-750 DEG C；
Step 2：Preheated pure magnesium and Al-Si intermediate alloys is added, stirring is not less than 10min；It is subsequently added preheated
Al-B intermediate alloys, stirring is not less than 10min, and takes off removing dross；Then preheated Al-RE, Al-Er and Al- is sequentially added
Sr intermediate alloys, mixing time is not less than 20min；
Step 3：In-furnace temperature is cooled to 720 DEG C, 3 ~ 5min is refined to melt；
Step 4：10min is stood, the oxide of bath surface is removed, pulse current is applied to melt, casting afterwards is made casting
Rod；
Step 5：By casting rod Homogenization Treatments obtained in step 4 kind, the casting rod for homogenizing state is entered with vertical extruder then
Row extruding, the temperature setting of described extruder is 400 ~ 440 DEG C, is made alloy bar material；
Step 6：Alloy bar material is drawn into the aluminium alloy wire of a diameter of 3.55mm with wire drawing machine, then aluminium alloy wire is carried out
Ageing Treatment.
Al-Si, Al-B, Al-RE, Al-Er and Al-Sr intermediate alloy added in described step two are respectively Al-
20Si, Al-3B, Al-10RE, Al-6Er and Al-5Sr intermediate alloy.
The parameter of pulse current is set to voltage 200-300V, frequency 10-15Hz in described step four.
Homogenization Treatments technique in described step five at 550 DEG C to be incubated 7-10h.
Aging treatment process is 5 ~ 9h of insulation at 175 ~ 200 DEG C in described step six.
The beneficial effects of the invention are as follows：Strong height leads aluminium alloy single line and preparation method thereof in disclosed in this invention, in
Strong is to add B and RE elements on the basis of Al-Mg-Si alloy, using the interaction of B, RE and impurity element, degasification, and removal of impurities,
Realize the purification of melt；RE can also form compound with AL, Fe, Si etc., can be used as heterogeneous forming core core crystal grain thinning；Addition
Micro Er can significantly be carried with refining alloy as-cast grain on the premise of the elongation of holding alloy is basically unchanged
Its room temperature strength high；Sr can change the form of AL-Fe-Si phases, and then influence element state in the base, improve intensity and
Conductance；Pulse current is applied to molten state alloy simultaneously, nucleation rate can be improved, so that crystal grain refinement, moreover it is possible to make solute
Field tends to uniform, reduces the probability of melt composition stomata and defect, improves dense structure's property；Homogenized by alloy, solid solution,
Aging temp and time further optimize, the effective control to Age-prrcipitation Phase, conductive so as to prepare intensity more than 245MPa
Rate is more than 60.5%IACS, aluminium alloy single line of the elongation more than 3.9%.
Specific embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment 1
Strong height leads the preparation method of aluminium alloy conductor in a kind of：
By taking following constituent mass percentage as an example：Magnesium Mg is 0.32%；Silicon Si is 0.35%；Mixed rare earth is 0.10%；Erbium Er is
0.1%；Strontium Sr is 0.05%；Boron is 0.06%；Titanium, vanadium, chromium, manganese impurity element summation are less than 0.01%, and other impurities element contains
Amount≤0.10%, remaining is aluminium.
Step one, the remelting fine aluminium ingot of preheating is put into resistance furnace, heating melts it, and between 720-750 DEG C
Insulation；
Step 2, addition preheated pure magnesium and Al-Si intermediate alloys, stirring are not less than 10min；It is subsequently added preheated
Al-B intermediate alloys, stirring is not less than 10min, and takes off removing dross；Add and closed in the middle of preheated Al-RE, Al-Er and Al-Sr
Gold, mixing time is not less than 10min；720 DEG C are cooled to, 3 ~ 5min is refined to melt；
Step 3, standing 10min, remove the oxide of bath surface, and pulse current is applied to melt（Pulse current parameter is：
Voltage 200V, frequency 10Hz）, cast be made casting rod afterwards；
Step 4, Homogenization Treatments are carried out to casting rod（7h is incubated at 550 DEG C）；The casting rod for homogenizing state is entered with vertical extruder
Row extruding；Extrusion temperature is 430 DEG C, is made bar, and carrying out solution treatment to the bar extruded afterwards is made alloy bar；Use wire drawing
Alloy bar is drawn into machine the aluminium alloy wire of a diameter of 3.55mm, carries out Ageing Treatment to aluminium alloy wire afterwards（It is incubated at 180 DEG C
7h）.
Embodiment 2
Strong height leads its preparation method of aluminium alloy conductor in a kind of：
By taking following constituent mass percentage as an example：Magnesium Mg is 0.35%；Silicon Si is 0.42%；Mixed rare earth is 0.20%；Erbium Er is
0.2%；Strontium Sr is 0.03%；Boron is 0.08%；Titanium, vanadium, chromium, manganese impurity element summation are less than 0.01%, and other impurities element contains
Amount≤0.10%, remaining is aluminium.
Step is with embodiment 1, wherein pulse current technological parameter：300V, 10Hz；Homogenization process parameter is：550℃
Lower insulation 8h；Aging technique parameter is：8h is incubated at 190 DEG C.
Embodiment 3
Strong height leads the preparation method of aluminium alloy conductor in a kind of：
By taking following constituent mass percentage as an example：Magnesium Mg is 0.38%；Silicon Si is 0.45%；Mixed rare earth is 0.30%, and erbium Er is
0.4%；Strontium Sr is 0.01%；Boron is 0.10%；Titanium, vanadium, chromium, manganese impurity element summation are less than 0.01%, and other impurities element contains
Amount≤0.10%, remaining is aluminium.
Step is with embodiment 1, wherein pulse current technological parameter：300V, 15Hz；Homogenization process parameter is：550℃
Lower insulation 9h；Aging technique parameter is：9h is incubated at 200 DEG C.
This patent measures electrical conductivity using D60K type digital metal conductance instruments, and each state sample is surveyed 5 times and takes it
Average value；The tensile property of each sample, the stretching of measure are tested using Shimadzu SHIMADZU/50KN electronic universals cupping machine
Intensity takes 5 average values of sample.Test result is as shown in three kinds of aluminium alloy conductor performance comparison tables 1.
1 three kinds of aluminium alloy conductor performance comparisons of table
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and unrestricted, ordinary skill
Other modifications or equivalent that personnel are made to technical scheme, without departing from the essence of technical solution of the present invention
God and scope, all should cover in the middle of scope of the presently claimed invention.
Claims (7)
1. strong height leads aluminium alloy single line in one kind, it is characterised in that：Strong height leads the component of aluminium alloy single line according to matter in described
Measuring percentage is：Magnesium Mg is 0.30 ~ 0.50%, and silicon Si is 0.30 ~ 0.60%, and mixed rare earth is 0.10 ~ 0.30%, and erbium Er is
0.05 ~ 0.30%, strontium Sr are 0.01 ~ 0.05%, and boron is 0.06 ~ 0.10%, and titanium, vanadium, chromium, manganese impurity element summation are less than 0.01%
Other impurities constituent content≤0.10%；Remaining is aluminium.
2. strong height leads aluminium alloy single line in one kind as claimed in claim 1, it is characterised in that：Described mixed rare earth is under
Column element is constituted：Ce:30~40%；La:60~70%.
3. strong height leads the preparation method of aluminium alloy single line in a kind of, it is characterised in that：Comprise the following steps：
Step one：The remelting fine aluminium ingot of preheating is put into resistance furnace, heating melts it, and is incubated between 720-750 DEG C；
Step 2：Preheated pure magnesium and Al-Si intermediate alloys is added, stirring is not less than 10min；It is subsequently added preheated
Al-B intermediate alloys, stirring is not less than 10min, and takes off removing dross；Then preheated Al-RE, Al-Er and Al- is sequentially added
Sr intermediate alloys, mixing time is not less than 20min；
Step 3：In-furnace temperature is cooled to 720 DEG C, 3 ~ 5min is refined to melt；
Step 4：10min is stood, the oxide of bath surface is removed, pulse current is applied to melt, casting afterwards is made casting
Rod；
Step 5：By casting rod Homogenization Treatments obtained in step 4 kind, the casting rod for homogenizing state is entered with vertical extruder then
Row extruding, the temperature setting of described extruder is 400 ~ 440 DEG C, is made alloy bar material；
Step 6：Alloy bar material is drawn into the aluminium alloy wire of a diameter of 3.55mm with wire drawing machine, then aluminium alloy wire is carried out
Ageing Treatment.
4. it is as claimed in claim 3 it is a kind of in strong height lead the preparation method of aluminium alloy single line, it is characterised in that：Described step
In two add Al-Si, Al-B, Al-RE, Al-Er and Al-Sr intermediate alloy be respectively Al-20Si, Al-3B, Al-10RE,
Al-6Er and Al-5Sr intermediate alloys.
5. it is as claimed in claim 3 it is a kind of in strong height lead the preparation method of aluminium alloy single line, it is characterised in that：Described step
The parameter of pulse current is set to voltage 200-300V, frequency 10-15Hz in four.
6. it is as claimed in claim 3 it is a kind of in strong height lead the preparation method of aluminium alloy single line, it is characterised in that：Described step
Homogenization Treatments technique in five at 550 DEG C to be incubated 7-10h.
7. it is as claimed in claim 3 it is a kind of in strong height lead the preparation method of aluminium alloy single line, it is characterised in that：Described step
Aging treatment process is 5 ~ 9h of insulation at 175 ~ 200 DEG C in six.
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Cited By (5)
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| CN107868893A (en) * | 2017-09-30 | 2018-04-03 | 昆明理工大学 | A kind of the aluminium base wire and preparation method of the high heat-resisting high conductivity of middle intensity |
| CN109207817A (en) * | 2018-10-19 | 2019-01-15 | 广亚铝业有限公司 | A kind of high conductivity and high-intensitive preparation process of aluminium alloy and its aluminium alloy |
| CN110983126A (en) * | 2020-01-10 | 2020-04-10 | 广西百矿润泰铝业有限公司 | Preparation method of 5754 alloy aluminum plate for automobile |
| CN117587301A (en) * | 2023-10-13 | 2024-02-23 | 广东豪美技术创新研究院有限公司 | High-strength high-conductivity Al-Si-Mg aluminum alloy and preparation method thereof |
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| CN110983126B (en) * | 2020-01-10 | 2021-06-04 | 广西百矿润泰铝业有限公司 | Preparation method of 5754 alloy aluminum plate for automobile |
| CN117587301A (en) * | 2023-10-13 | 2024-02-23 | 广东豪美技术创新研究院有限公司 | High-strength high-conductivity Al-Si-Mg aluminum alloy and preparation method thereof |
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Application publication date: 20170613 |