CN105970022A - Heat-resistant aluminium alloy wire, preparation method and heat-resistant aluminium alloy stranded wire comprising steel core - Google Patents
Heat-resistant aluminium alloy wire, preparation method and heat-resistant aluminium alloy stranded wire comprising steel core Download PDFInfo
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- CN105970022A CN105970022A CN201610300067.6A CN201610300067A CN105970022A CN 105970022 A CN105970022 A CN 105970022A CN 201610300067 A CN201610300067 A CN 201610300067A CN 105970022 A CN105970022 A CN 105970022A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- 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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
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Abstract
The invention discloses a heat-resistant aluminium alloy wire and a preparation method of the heat-resistant aluminium alloy wire and further discloses a heat-resistant aluminium alloy stranded wire which comprises a steel core and is formed by concentrically stranding the steel core and the heat-resistant aluminium alloy wire. The heat-resistant aluminium alloy wire is prepared from components in parts by weight as follows: 0.11-0.42 parts of stannic oxide, 0.06-0.08 parts of lanthanum trioxide, 0.08-0.15 parts of cerium oxide, 0.25-0.36 parts of silicon nitride, 0.08-0.12 parts of fullerene and 98.6-99.2 parts of aluminium. The aluminium alloy wire is equivalent to the high-strength steel core in strength, and tests prove that the aluminium alloy wire has the tensile strength larger than 350 MPa, the elongation rate being 45% or above, the electric conductivity being 91% or above and the heat resistance temperature higher than or equal to 200 DEG C and has the strength residual rate larger than 99.8% after being heated at 280 DEG C for 1 h. Thus the aluminium alloy wire has the high electric conductivity, high strength and good heat resistance.
Description
Technical field
The present invention relates to a kind of heat-resistant aluminum alloy wire, be specifically related to a kind of heat-resistant aluminum alloy wire, preparation method and heat-resistant steel core aluminium alloy stranded conductor.Belong to technical field of electric wires and cables.
Background technology
Under national grid " transferring electricity from the west to the east, north and south supply mutually, on national network " situation, distance, Large Copacity, high-tension transmission circuit are more and more.Powering at present and steel-cored aluminium strand (steel core and aluminum steel stranded form) is widely used in defeated modified line road, owing to the weight relatively copper of aluminum is light, and price is relatively inexpensive, and can effectively control to power defeated becomes this, but, there is a lot of problem in it.
The thermostability of fine aluminium is unsatisfactory, and the high-pressure trend of transmission line of electricity, long distance ionization and high capacity are more and more higher to the thermostability of transmission line of electricity and the requirement of intensity.May be typically added the method for other alloying element to improve thermostability, but the conductivity of gained aluminium alloy conductor may decline after addition alloying element, conductivity often runs in the opposite direction with high intensity, thermostability, and current high intensity and heat-resist aluminium alloy conductor the most all cannot have higher conductivity simultaneously.
Therefore, it is badly in need of the heat-resistant aluminum alloy wire of a kind of high conductivity high strength, thus is applied in steel core aluminum alloy stranded wire.
Summary of the invention
It is an object of the invention to as overcoming above-mentioned the deficiencies in the prior art, it is provided that a kind of heat-resistant aluminum alloy wire and preparation method thereof.
Present invention also offers a kind of heat-resistant steel core aluminium alloy stranded conductor.
For achieving the above object, the present invention uses following technical proposals:
A kind of heat-resistant aluminum alloy wire, is made up of forming of following weight portion: tin ash 0.11～0.42 part, lanthanum sesquioxide 0.06～0.08 part, cerium oxide 0.08～0.15 part, silicon nitride 0.25～0.36 part, fuller olefinic carbon 60 .08～0.12 part, aluminum 98.6～99.2 parts.
Preferably, it is made up of the component of following weight portion: tin ash 0.21～0.35 part, lanthanum sesquioxide 0.06～0.07 part, cerium oxide 0.11～0.14 part, silicon nitride 0.28～0.32 part, fuller olefinic carbon 60 .09～0.11 part, aluminum 98.9～99.1 parts.
It is further preferred that be made up of the component of following weight portion: tin ash 0.3 part, lanthanum sesquioxide 0.06 part, cerium oxide 0.12 part, silicon nitride 0.3 part, fuller olefinic carbon 60 .1 part, 99 parts of aluminum.
The preparation method of above-mentioned heat-resistant aluminum alloy wire, including step: (1) weighs tin ash and the aluminum of formula ratio, is heated to 650～680 DEG C, mix homogeneously under inert atmosphere；(2) under an inert atmosphere, add the fullerene of abundant ball milling, and be warming up to 700～710 DEG C；(3) under an inert atmosphere, it is sequentially added into the lanthanum sesquioxide of formula ratio, cerium oxide and silicon nitride, is incubated 0.5～2 hour, degasification, slagging-off, obtain aluminium alloy liquid；Allowing aluminium alloy liquid enter in aluminum bar continuous casting and tandem rolling machine under the conditions of (4) 750 DEG C and carry out strand, strand temperature is 540～550 DEG C, obtains the aluminum bar of diameter 9.5mm；(5) carrying out heat treatment in heat-treatment furnace, temperature is 400 DEG C, and the time is 36 hours, and wire drawing on aluminum alloy drawing machine after cooling obtains the satisfactory aluminium alloy conductor of diameter through wire drawing.
Preferably, step (5) gained aluminium alloy conductor heat treatment 200～after 250 minutes under the conditions of 200～285 DEG C, natural cooling.
A kind of heat-resistant steel core aluminium alloy stranded conductor, is steel core and above-mentioned heat-resistant aluminum alloy wire to be formed through concentric type is stranded, and wherein steel core is the heart yearn stranded by steel wire.
Preferably, the cross-sectional diameter of described heat-resistant steel core aluminium alloy stranded conductor is 16～560mm.
Beneficial effects of the present invention:
The present invention is that tin ash, lanthanum sesquioxide, cerium oxide, silicon nitride, fullerene and aluminum are made aluminium alloy, wherein, silicon nitride can put forward heavy alloyed intensity, lanthanum sesquioxide and cerium oxide carry heavy alloyed thermostability, the fully fullerene of ball milling has good electrical property, in conjunction with conductive material tin ash, puies forward heavy alloyed conductivity, it addition, these combination acts synergisticallies the most surprisingly improve the elongation percentage of gained aluminium alloy conductor.The aluminium alloy conductor of the present invention is suitable with the intensity of high-strength steel core, after tested, and its tensile strength ＞ 350MPa, elongation percentage can reach more than 45%, conductivity is more than 91%, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.Therefore the aluminium alloy conductor of the present invention has high conductivity, high intensity and good thermostability.With the stranded heat-resistant steel core aluminium alloy stranded conductor of this aluminium alloy conductor and steel core, its tensile strength >=340MPa, elongation percentage can reach more than 40%, and conductivity is more than 90%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further elaborated, it should explanation, and its content, merely to explain the present invention, is not defined by the description below.
Embodiment 1:
A kind of heat-resistant aluminum alloy wire of the present invention, consists of and makes: tin ash 0.11kg, lanthanum sesquioxide 0.06kg, cerium oxide 0.08kg, silicon nitride 0.25kg, fuller olefinic carbon 60 .08kg, aluminum 98.6kg.
Its preparation method, including step: (1) weighs tin ash and the aluminum of formula ratio, is heated to 650 DEG C, mix homogeneously under inert atmosphere；(2) under an inert atmosphere, add the fullerene of abundant ball milling, and be warming up to 700 DEG C；(3) under an inert atmosphere, it is sequentially added into the lanthanum sesquioxide of formula ratio, cerium oxide and silicon nitride, is incubated 0.5 hour, degasification, slagging-off, obtain aluminium alloy liquid；Allowing aluminium alloy liquid enter in aluminum bar continuous casting and tandem rolling machine under the conditions of (4) 750 DEG C and carry out strand, strand temperature is 540 DEG C, obtains the aluminum bar of diameter 9.5mm；(5) in heat-treatment furnace, heat treatment is carried out, temperature is 400 DEG C, time is 36 hours, wire drawing on aluminum alloy drawing machine after cooling, the satisfactory aluminium alloy conductor of diameter (such as: obtain the aluminium alloy conductor of diameter 4mm through 12 road wire drawings) is obtained through wire drawing, under the conditions of 200 DEG C, heat treatment is after 200 minutes, natural cooling.
After tested, tensile strength 355MPa of heat-resistant aluminum alloy wire, elongation percentage 46%, conductivity 91%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
A kind of heat-resistant steel core aluminium alloy stranded conductor of the present invention, is steel core and above-mentioned heat-resistant aluminum alloy wire to be formed through concentric type is stranded, and its cross-sectional diameter is 16mm, and wherein steel core is the heart yearn stranded by steel wire (high-strength steel wire, tensile strength 340MPa).
After tested, tensile strength 340MPa of heat-resistant steel core aluminium alloy stranded conductor, elongation percentage 42%, conductivity is 90%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
Embodiment 2:
A kind of heat-resistant aluminum alloy wire of the present invention, consists of and makes: tin ash 0.42kg, lanthanum sesquioxide 0.08kg, cerium oxide 0.15kg, silicon nitride 0.36kg, fuller olefinic carbon 60 .12kg, aluminum 99.2kg.
Its preparation method, including step: (1) weighs tin ash and the aluminum of formula ratio, is heated to 680 DEG C, mix homogeneously under inert atmosphere；(2) under an inert atmosphere, add the fullerene of abundant ball milling, and be warming up to 710 DEG C；(3) under an inert atmosphere, it is sequentially added into the lanthanum sesquioxide of formula ratio, cerium oxide and silicon nitride, is incubated 2 hours, degasification, slagging-off, obtain aluminium alloy liquid；Allowing aluminium alloy liquid enter in aluminum bar continuous casting and tandem rolling machine under the conditions of (4) 750 DEG C and carry out strand, strand temperature is 550 DEG C, obtains the aluminum bar of diameter 9.5mm；(5) in heat-treatment furnace, heat treatment is carried out, temperature is 400 DEG C, time is 36 hours, wire drawing on aluminum alloy drawing machine after cooling, the satisfactory aluminium alloy conductor of diameter (such as: obtain the aluminium alloy conductor of diameter 4mm through 12 road wire drawings) is obtained through wire drawing, under the conditions of 285 DEG C, heat treatment is after 250 minutes, natural cooling.
After tested, tensile strength 355MPa of heat-resistant aluminum alloy wire, elongation percentage 46%, conductivity 91%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
A kind of heat-resistant steel core aluminium alloy stranded conductor of the present invention, is steel core and above-mentioned heat-resistant aluminum alloy wire to be formed through concentric type is stranded, and its cross-sectional diameter is 560mm, and wherein steel core is the heart yearn stranded by steel wire (high-strength steel wire, tensile strength 340MPa).
After tested, tensile strength 340MPa of heat-resistant steel core aluminium alloy stranded conductor, elongation percentage 42%, conductivity is 90%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
Embodiment 3:
A kind of heat-resistant aluminum alloy wire of the present invention, consists of and makes: tin ash 0.21kg, lanthanum sesquioxide 0.06kg, cerium oxide 0.11kg, silicon nitride 0.28kg, fuller olefinic carbon 60 .09kg, aluminum 98.9kg.
Its preparation method, including step: (1) weighs tin ash and the aluminum of formula ratio, is heated to 650 DEG C, mix homogeneously under inert atmosphere；(2) under an inert atmosphere, add the fullerene of abundant ball milling, and be warming up to 710 DEG C；(3) under an inert atmosphere, it is sequentially added into the lanthanum sesquioxide of formula ratio, cerium oxide and silicon nitride, is incubated 0.5 hour, degasification, slagging-off, obtain aluminium alloy liquid；Allowing aluminium alloy liquid enter in aluminum bar continuous casting and tandem rolling machine under the conditions of (4) 750 DEG C and carry out strand, strand temperature is 550 DEG C, obtains the aluminum bar of diameter 9.5mm；(5) in heat-treatment furnace, heat treatment is carried out, temperature is 400 DEG C, time is 36 hours, wire drawing on aluminum alloy drawing machine after cooling, the satisfactory aluminium alloy conductor of diameter (such as: obtain the aluminium alloy conductor of diameter 4mm through 12 road wire drawings) is obtained through wire drawing, under the conditions of 200 DEG C, heat treatment is after 250 minutes, natural cooling.
After tested, tensile strength 360MPa of heat-resistant aluminum alloy wire, elongation percentage 48%, conductivity is 92%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
A kind of heat-resistant steel core aluminium alloy stranded conductor of the present invention, is steel core and above-mentioned heat-resistant aluminum alloy wire to be formed through concentric type is stranded, and its cross-sectional diameter is 100mm, and wherein steel core is the heart yearn stranded by steel wire (high-strength steel wire, tensile strength 350MPa).
After tested, tensile strength 350MPa of heat-resistant steel core aluminium alloy stranded conductor, elongation percentage more than 43%, conductivity is 91%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
Embodiment 4:
A kind of heat-resistant aluminum alloy wire of the present invention, consists of and makes: tin ash 0.35kg, lanthanum sesquioxide 0.07kg, cerium oxide 0.14kg, silicon nitride 0.32kg, fuller olefinic carbon 60 .11kg, aluminum 99.1kg.
Its preparation method, including step: (1) weighs tin ash and the aluminum of formula ratio, is heated to 680 DEG C, mix homogeneously under inert atmosphere；(2) under an inert atmosphere, add the fullerene of abundant ball milling, and be warming up to 700 DEG C；(3) under an inert atmosphere, it is sequentially added into the lanthanum sesquioxide of formula ratio, cerium oxide and silicon nitride, is incubated 2 hours, degasification, slagging-off, obtain aluminium alloy liquid；Allowing aluminium alloy liquid enter in aluminum bar continuous casting and tandem rolling machine under the conditions of (4) 750 DEG C and carry out strand, strand temperature is 540 DEG C, obtains the aluminum bar of diameter 9.5mm；(5) in heat-treatment furnace, heat treatment is carried out, temperature is 400 DEG C, time is 36 hours, wire drawing on aluminum alloy drawing machine after cooling, the satisfactory aluminium alloy conductor of diameter (such as: obtain the aluminium alloy conductor of diameter 4mm through 12 road wire drawings) is obtained through wire drawing, under the conditions of 285 DEG C, heat treatment is after 200 minutes, natural cooling.
After tested, tensile strength 360MPa of heat-resistant aluminum alloy wire, elongation percentage 48%, conductivity is 92%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
A kind of heat-resistant steel core aluminium alloy stranded conductor of the present invention, is steel core and above-mentioned heat-resistant aluminum alloy wire to be formed through concentric type is stranded, and its cross-sectional diameter is 200mm, and wherein steel core is the heart yearn stranded by steel wire (high-strength steel wire, tensile strength 350MPa).
After tested, tensile strength 350MPa of heat-resistant steel core aluminium alloy stranded conductor, elongation percentage more than 43%, conductivity is 91%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
Embodiment 5:
A kind of heat-resistant aluminum alloy wire of the present invention, consists of and makes: tin ash 0.3kg, lanthanum sesquioxide 0.06kg, cerium oxide 0.12kg, silicon nitride 0.3kg, fuller olefinic carbon 60 .1kg, aluminum 99kg.
Its preparation method, including step: (1) weighs tin ash and the aluminum of formula ratio, is heated to 660 DEG C, mix homogeneously under inert atmosphere；(2) under an inert atmosphere, add the fullerene of abundant ball milling, and be warming up to 700 DEG C；(3) under an inert atmosphere, it is sequentially added into the lanthanum sesquioxide of formula ratio, cerium oxide and silicon nitride, is incubated 1 hour, degasification, slagging-off, obtain aluminium alloy liquid；Allowing aluminium alloy liquid enter in aluminum bar continuous casting and tandem rolling machine under the conditions of (4) 750 DEG C and carry out strand, strand temperature is 550 DEG C, obtains the aluminum bar of diameter 9.5mm；(5) in heat-treatment furnace, heat treatment is carried out, temperature is 400 DEG C, time is 36 hours, wire drawing on aluminum alloy drawing machine after cooling, the satisfactory aluminium alloy conductor of diameter (such as: obtain the aluminium alloy conductor of diameter 4mm through 12 road wire drawings) is obtained through wire drawing, under the conditions of 250 DEG C, heat treatment is after 220 minutes, natural cooling.
After tested, tensile strength 380MPa of heat-resistant aluminum alloy wire, elongation percentage 50%, conductivity is 94%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
A kind of heat-resistant steel core aluminium alloy stranded conductor of the present invention, is steel core and above-mentioned heat-resistant aluminum alloy wire to be formed through concentric type is stranded, and its cross-sectional diameter is 400mm, and wherein steel core is the heart yearn stranded by steel wire (high-strength steel wire, tensile strength 380MPa).
After tested, tensile strength 380MPa of heat-resistant steel core aluminium alloy stranded conductor, elongation percentage 50%, conductivity is 94%IACS, heat resisting temperature >=200 DEG C, short-term 280 DEG C 1 hour intensity survival rate ＞ 99.8% of heating.
Although the above-mentioned detailed description of the invention to the present invention is described; but not limiting the scope of the invention; on the basis of technical scheme, those skilled in the art need not to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (7)
1. a heat-resistant aluminum alloy wire, it is characterised in that be made up of forming of following weight portion: tin ash 0.11～0.42 part, lanthanum sesquioxide 0.06～0.08 part, cerium oxide 0.08～0.15 part, silicon nitride 0.25～0.36 part, fuller olefinic carbon 60 .08～0.12 part, aluminum 98.6～99.2 parts.
A kind of heat-resistant aluminum alloy wire the most according to claim 1, it is characterized in that, it is made up of the component of following weight portion: tin ash 0.21～0.35 part, lanthanum sesquioxide 0.06～0.07 part, cerium oxide 0.11～0.14 part, silicon nitride 0.28～0.32 part, fuller olefinic carbon 60 .09～0.11 part, aluminum 98.9～99.1 parts.
A kind of heat-resistant aluminum alloy wire the most according to claim 1, it is characterised in that be made up of the component of following weight portion: tin ash 0.3 part, lanthanum sesquioxide 0.06 part, cerium oxide 0.12 part, silicon nitride 0.3 part, fuller olefinic carbon 60 .1 part, 99 parts of aluminum.
4. the preparation method of a kind of heat-resistant aluminum alloy wire according to any one of claims 1 to 3, it is characterised in that include step: (1) weighs tin ash and the aluminum of formula ratio, is heated to 650～680 DEG C, mix homogeneously under inert atmosphere；(2) under an inert atmosphere, add the fullerene of abundant ball milling, and be warming up to 700～710 DEG C；(3) under an inert atmosphere, it is sequentially added into the lanthanum sesquioxide of formula ratio, cerium oxide and silicon nitride, is incubated 0.5～2 hour, degasification, slagging-off, obtain aluminium alloy liquid；Allowing aluminium alloy liquid enter in aluminum bar continuous casting and tandem rolling machine under the conditions of (4) 750 DEG C and carry out strand, strand temperature is 540～550 DEG C, obtains the aluminum bar of diameter 9.5mm；(5) carrying out heat treatment in heat-treatment furnace, temperature is 400 DEG C, and the time is 36 hours, and wire drawing on aluminum alloy drawing machine after cooling obtains the satisfactory aluminium alloy conductor of diameter through wire drawing.
Preparation method the most according to claim 4, it is characterised in that step (5) gained aluminium alloy conductor heat treatment 200～after 250 minutes under the conditions of 200～285 DEG C, natural cooling.
6. a heat-resistant steel core aluminium alloy stranded conductor, it is characterised in that being steel core and the heat-resistant aluminum alloy wire according to any one of claims 1 to 3 to be formed through concentric type is stranded, wherein steel core is the heart yearn stranded by steel wire.
A kind of heat-resistant steel core aluminium alloy stranded conductor the most according to claim 6, it is characterised in that the cross-sectional diameter of described heat-resistant steel core aluminium alloy stranded conductor is 16～560mm.
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