CN108986957A - A kind of environment-friendly type aluminium alloy electric cable core and its cable core and preparation - Google Patents

A kind of environment-friendly type aluminium alloy electric cable core and its cable core and preparation Download PDF

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Publication number
CN108986957A
CN108986957A CN201810805401.2A CN201810805401A CN108986957A CN 108986957 A CN108986957 A CN 108986957A CN 201810805401 A CN201810805401 A CN 201810805401A CN 108986957 A CN108986957 A CN 108986957A
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cable core
aluminium alloy
layer
environment
friendly type
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张锐
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
    • 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
    • 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
    • C22C21/12—Alloys based on aluminium with copper as the next major constituent
    • C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
    • 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
    • C22F1/002—Changing 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
    • 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
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
    • 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
    • C22F1/057—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 of alloys with copper as the next major constituent
    • 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
    • H01B1/023—Alloys based on aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/08—Several wires or the like stranded in the form of a rope
    • H01B5/10—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
    • H01B7/1815—Protections not provided for in groups H01B7/182 - H01B7/26 composed of longitudinal inserts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1865—Sheaths comprising braided non-metallic layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Conductive Materials (AREA)

Abstract

The invention discloses a kind of environment-friendly type aluminium alloy electric cable core and its cable core and preparations, it include restrictive coating, filled layer and cable floor, the restrictive coating includes enhancing braiding layer, external shielding layer and high-temperature-resistant layer, the filled layer includes flame-retardant strip and gasket for packing, the cable floor is twisted by three cable cores, limit parting bead is equipped between each cable core, it is set on the limit parting bead there are three the holding tank being arranged in the shape of a spiral, each cable core all snaps into fixed in holding tank；The environment-friendly type aluminium alloy electric cable core can achieve save the cost and via durable purpose.

Description

A kind of environment-friendly type aluminium alloy electric cable core and its cable core and preparation
Technical field
Present invention relates particularly to a kind of environment-friendly type aluminium alloy electric cable core and its cable core and preparations.
Background technique
Cable is to transmit electric energy, electric signal and the wire product for realizing electromagnetic energy conversion, usually by several or several groups are led The cable for the similar rope that line (every group at least two) is twisted, mutually insulated between every group of conducting wire, and often around one Center is twisted into, and entire outside is surrounded by the coating of high-insulation.Cable has interior energization, the feature of external insulation.
Packing material consumable quantity is big in existing cable and linear resistance is high, while internal mostly with the design of cable core, Under long-time service, it is easy to cause the problem of abrasion and heat dissipation effect difference, and existing cable core is mostly using copper alloy system At thermal diffusivity is poor, and hardness and intensity are lower, it is difficult to meet use demand now.
Summary of the invention
The purpose of the present invention is to solve the shortcomings of the prior art place, provide a kind of environment-friendly type aluminium alloy electric cable core and its Cable core and preparation, to achieve the purpose that save the cost and via durable.
The purpose of the present invention is achieved by the following technical programs.
A kind of environment-friendly type aluminium alloy electric cable core, includes restrictive coating, filled layer and cable floor, and the restrictive coating includes to increase Strong braiding layer, external shielding layer and high-temperature-resistant layer, the filled layer include flame-retardant strip and gasket for packing, and the cable floor is by three electricity Core is twisted, and limit parting bead is equipped between each cable core, set on the limit parting bead there are three set in the shape of a spiral The holding tank set, each cable core all snap into fixed in holding tank.
Further, aluminium set is also cased with outside the cable floor, the aluminium set is tightly attached to outside cable core and limit parting bead At arc section.
Further, the enhancing braiding layer, external shielding layer and high-temperature-resistant layer are concentric setting.
Further, the external shielding layer be ferrous alloy, the enhancing braiding layer by flexible ethylene base resin braiding and At the cable core is coated with silicone oil outside.
Further, the holding tank is in equidistant arrangement on limit parting bead.
Further, the cable core is made of the raw material of following mass percent number meter: Mg:1.5-2.5%, Cu: 4.5-6.5%, Fe:0.25-0.35%, Ga:0.15-0.35%, Zr:1.25-2.25%, Sc:0.03-0.05%, Sb: 0.005-0.015%, Ti:0.14-0.26%, B:0.35-0.55%, Ag:0.005-0.015%, Co:1.25-1.55%, Tm:0.07-0.15%, Y:0.04-0.06%, W:0.03-0.04%, V:0.12-0.22%, Cr:0.55-0.65%, Bi: 0.001-0.003%, Pb≤0.003%, surplus are Al and inevitable impurity.
Further, the cable core is made of the raw material of following mass percent number meter: Mg:1.5%, Cu: 4.5%, Fe:0.25%, Ga:0.15%, Zr:1.25%, Sc:0.03%, Sb:0.005%, Ti:0.14%, B:0.35%, Ag:0.005%, Co:1.25%, Tm:0.07%, Y:0.04%, W:0.03%, V:0.12%, Cr:0.55%, Bi: 0.001%, Pb≤0.003%, surplus are Al and inevitable impurity.
Further, the cable core is made of the raw material of following mass percent number meter: Mg:2.5%, Cu: 6.5%, Fe:0.35%, Ga:0.35%, Zr:2.25%, Sc:0.05%, Sb:0.015%, Ti:0.26%, B:0.55%, Ag:0.015%, Co:1.55%, Tm:0.15%, Y:0.06%, W:0.04%, V:0.22%, Cr:0.65%, Bi: 0.003%, Pb≤0.003%, surplus are Al and inevitable impurity.
Further, the cable core is made of the raw material of following mass percent number meter: Mg:2%, Cu:5.5%, Fe:0.3%, Ga:0.2%, Zr:1.75%, Sc:0.04%, Sb:0.01%, Ti:0.2%, B:0.45%, Ag:0.01%, Co:1.4%, Tm:0.1%, Y:0.05%, W:0.035%, V:0.18%, Cr:0.6%, Bi:0.002%, Pb≤ 0.003%, surplus is Al and inevitable impurity.
Further, the cable core preparation method the following steps are included:
1) Mg:1.5-2.5%, Cu:4.5-6.5%, Fe:0.25- ingredient and melting: are put into according to mass percent ingredient 0.35%, Ga:0.15-0.35%, Zr:1.25-2.25%, Sc:0.03-0.05% be to smelting furnace, and when being warming up to 600 DEG C, Keep 5-10min；Sb:0.005-0.015%, Ti:0.14-0.26%, B:0.35- are thrown then according to mass percent ingredient 0.55%, Ag:0.005-0.015%, Co:1.25-1.55%, Tm:0.07-0.15% are to smelting furnace, and are warming up to 800 DEG C When, keep 10-15min；Then Y:0.04-0.06%, W:0.03-0.04%, V:0.12- are put into according to mass percent ingredient 0.22%, Cr:0.55-0.65%, Bi:0.001-0.003%, Pb≤0.003% be to smelting furnace, and when being warming up to 900 DEG C, protects 5-10min is held, finally investment Al to mass percent reaches 100%, and sprinkles one layer of coverture covering, when furnace charge is completely melt Afterwards, surface scum is clawed, keeping melting in-furnace temperature is 900-940 DEG C, and stirring melt 15-20min obtains molten aluminium alloy.
2) cast: by obtained aluminium alloy solution temperature be 800 DEG C, casting speed be 90mm/min under conditions of cast As casting rod, the stub that length is 500mm is cut into, removes the oxide skin on its surface, obtains aluminium alloy cast ingot；
3) it anneals: obtained aluminium alloy cast ingot being warmed to 485 DEG C in inert gas, 1-1.5h is kept, then heats To 500 DEG C, 0.5-1h is kept, homogenizing annealing 15h is then carried out under conditions of annealing temperature is 465 DEG C；
4) it is heat-treated: aluminium alloy cast ingot being put into resistance-heated furnace and carries out double-stage heating, aluminium alloy cast ingot is heated to 380 DEG C of heat preservation 45min after air-cooled, continue to be heated to 480 DEG C of heat preservation 4h. aluminium alloy cast ingot that obtains that treated；
5) drawing tube reducing: aluminium alloy cast ingot is put into extruder and is squeezed into Φ 10mm bar, extrusion speed 4-4.5m/ Rods and bars of aluminium alloy is put into wire drawing machine and carries out drawing tube reducing, subtracted on wire drawing machine with the speed of 12m/min, 10-15% by min Diameter rate distinguishes drawing copper wire base and aluminium alloy wire base, until diameter is 0.8-1.2mm, obtains aluminium alloy wires；
6) aluminium alloy wires timeliness: is subjected to two-stage time effect, wherein it is 450-520 DEG C that first order timeliness, which is heated to temperature, 1-2h is kept, then by after its water cooling to room temperature, then carries out secondary time effect heat treatment, it is 240- that second level timeliness, which is heated to temperature, 260 DEG C, 4-6h is kept the temperature, then be air-cooled to room temperature, obtain timeliness cable core；
7) it forms: in 15 minutes after timeliness cable core again solution hardening, will be placed in liquid nitrogen after carrying out cold treatment and obtain Aluminium alloy electric cable core, wherein cold treatment temperature is -150 DEG C~-130 DEG C, soaking time 1-2h.
Further, in step 3), used inert gas is nitrogen.
The beneficial effects of the present invention are: it is small to reduce the consuming of packing material and linear resistance by designing for aluminium set, Contact of the aluminium set with cable conductor becomes cambered surface by threadiness, is no longer completely cut off by air, heat dissipation effect is greatly improved, and takes in inside Match limit parting bead, avoided the contact of each cable core in aluminium set, has inhibited to wear broken string caused by the bending because of cable, in addition, Special cable core is additionally used, on the basis of Al, and is added to micro Cu, Mg, Ga, Y, W, V these types element, When forming the alloy carbide of Dispersed precipitate, so that the hardness of cable core, intensity and wearability are dramatically increased, meanwhile, Mn, Co, Tm's dissolves in, and can form distortion of lattice, further intensity, the hardness for increasing cable core, and passes through control section bar extrusion Speed and squeeze pressure increase the uniformity of the interior tissue of aluminum material and the refinement of crystal grain, improve under water cooling state The quality and processing performance of aluminium alloy electric cable core.
Detailed description of the invention
Fig. 1 is a kind of structure chart of environment-friendly type aluminium alloy electric cable core of the present invention；
Fig. 2 is a kind of limit parting bead structure chart of environment-friendly type aluminium alloy electric cable core of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not For limiting the present invention.
Embodiment 1
Refering to fig. 1 shown in -2, a kind of environment-friendly type aluminium alloy electric cable core includes restrictive coating 1, filled layer 2 and cable floor 3, The restrictive coating 1 includes enhancing braiding layer 11, external shielding layer 12 and high-temperature-resistant layer 13, and the filled layer 2 includes flame-retardant strip 21 and gasket for packing 22, the cable floor 3 be twisted by three cable cores 31, between each cable core 31 be equipped with limit every Item 32,32 set there are three the holding tank 33 that is arranged in the shape of a spiral on the limit parting bead, and each cable core 31 is all caught in In fixed in holding tank 33, be also cased with aluminium set 34 outside the cable floor 3, the aluminium set 34 be tightly attached to cable core 31 and limit every At arc section outside item 32, the enhancing braiding layer 11, external shielding layer 12 and high-temperature-resistant layer 13 are concentric setting, the external screen Covering layer 12 is ferrous alloy, and the enhancing braiding layer 11 is woven by flexible ethylene base resin, and the cable core 31 applies outside It is covered with silicone oil, the holding tank 33 is in equidistant arrangement on limit parting bead 32.
A kind of cable core is made of the raw material of following mass percent number meter: Mg:2.5%, Cu:6.5%, Fe: 0.35%, Ga:0.35%, Zr:2.25%, Sc:0.05%, Sb:0.015%, Ti:0.26%, B:0.55%, Ag: 0.015%, Co:1.55%, Tm:0.15%, Y:0.06%, W:0.04%, V:0.22%, Cr:0.65%, Bi:0.003%, Pb≤0.003%, surplus are Al and inevitable impurity.
A kind of preparation method of cable core, comprising the following steps:
1) Mg:2.5%, Cu:6.5%, Fe:0.35%, Ga ingredient and melting: are put into according to mass percent ingredient: 0.35%, Zr:2.25%, Sc:0.05% be to smelting furnace, and when being warming up to 600 DEG C, keeps 5-10min；Then according to quality hundred Divide and throws Sb:0.015%, Ti:0.26%, B:0.55%, Ag:0.015%, Co:1.55%, Tm:0.15% to melting than ingredient Furnace, and when being warming up to 800 DEG C, keep 10-15min；Then according to mass percent ingredient investment Y:0.06%, W:0.04%, V:0.22%, Cr:0.65%, Bi:0.003%, Pb≤0.003% keep 5- to smelting furnace, and when being warming up to 900 DEG C 10min, finally investment Al to mass percent reaches 100%, and sprinkles one layer of coverture covering, after furnace charge is completely melt, Surface scum is clawed, keeping melting in-furnace temperature is 900-940 DEG C, and stirring melt 15-20min obtains molten aluminium alloy；
2) cast: by obtained aluminium alloy solution temperature be 800 DEG C, casting speed be 90mm/min under conditions of cast As casting rod, the stub that length is 500mm is cut into, removes the oxide skin on its surface, obtains aluminium alloy cast ingot；
3) it anneals: obtained aluminium alloy cast ingot being warmed to 485 DEG C in inert gas, 1-1.5h is kept, then heats To 500 DEG C, 0.5-1h is kept, homogenizing annealing 15h is then carried out under conditions of annealing temperature is 465 DEG C；
4) it is heat-treated: aluminium alloy cast ingot being put into resistance-heated furnace and carries out double-stage heating, aluminium alloy cast ingot is heated to 380 DEG C of heat preservation 45min after air-cooled, continue to be heated to 480 DEG C of heat preservation 4h. aluminium alloy cast ingot that obtains that treated；
5) drawing tube reducing: aluminium alloy cast ingot is put into extruder and is squeezed into Φ 10mm bar, extrusion speed 4-4.5m/ Rods and bars of aluminium alloy is put into wire drawing machine and carries out drawing tube reducing, subtracted on wire drawing machine with the speed of 12m/min, 10-15% by min Diameter rate distinguishes drawing copper wire base and aluminium alloy wire base, until diameter is 0.8-1.2mm, obtains aluminium alloy wires；
6) aluminium alloy wires timeliness: is subjected to two-stage time effect, wherein it is 450-520 DEG C that first order timeliness, which is heated to temperature, 1-2h is kept, then by after its water cooling to room temperature, then carries out secondary time effect heat treatment, it is 240- that second level timeliness, which is heated to temperature, 260 DEG C, 4-6h is kept the temperature, then be air-cooled to room temperature, obtain timeliness cable core；
7) it forms: in 15 minutes after timeliness cable core again solution hardening, will be placed in liquid nitrogen after carrying out cold treatment and obtain Aluminium alloy electric cable core, wherein cold treatment temperature is -150 DEG C~-130 DEG C, soaking time 1-2h.
In step 3), used inert gas is nitrogen.
Embodiment 2
Refering to fig. 1 shown in -2, a kind of environment-friendly type aluminium alloy electric cable core includes restrictive coating 1, filled layer 2 and cable floor 3, The restrictive coating 1 includes enhancing braiding layer 11, external shielding layer 12 and high-temperature-resistant layer 13, and the filled layer 2 includes flame-retardant strip 21 and gasket for packing 22, the cable floor 3 be twisted by three cable cores 31, between each cable core 31 be equipped with limit every Item 32,32 set there are three the holding tank 33 that is arranged in the shape of a spiral on the limit parting bead, and each cable core 31 is all caught in In fixed in holding tank 33, be also cased with aluminium set 34 outside the cable floor 3, the aluminium set 34 be tightly attached to cable core 31 and limit every At arc section outside item 32, the enhancing braiding layer 11, external shielding layer 12 and high-temperature-resistant layer 13 are concentric setting, the external screen Covering layer 12 is ferrous alloy, and the enhancing braiding layer 11 is woven by flexible ethylene base resin, and the cable core 31 applies outside It is covered with silicone oil, the holding tank 33 is in equidistant arrangement on limit parting bead 32.
A kind of cable core is made of the raw material of following mass percent number meter: Mg:1.5%, Cu:4.5%, Fe: 0.25%, Ga:0.15%, Zr:1.25%, Sc:0.03%, Sb:0.005%, Ti:0.14%, B:0.35%, Ag: 0.005%, Co:1.25%, Tm:0.07%, Y:0.04%, W:0.03%, V:0.12%, Cr:0.55%, Bi:0.001%, Pb≤0.003%, surplus are Al and inevitable impurity.
A kind of preparation method of cable core, comprising the following steps:
1) Mg:1.5%, Cu:4.5%, Fe:0.25%, Ga ingredient and melting: are put into according to mass percent ingredient: 0.15%, Zr:1.25%, Sc:0.03% be to smelting furnace, and when being warming up to 600 DEG C, keeps 5-10min；Then according to quality hundred Divide and throws Sb:0.005%, Ti:0.14%, B:0.35%, Ag:0.005%, Co:1.25%, Tm:0.07% to melting than ingredient Furnace, and when being warming up to 800 DEG C, keep 10-15min；Then according to mass percent ingredient investment Y:0.04%, W:0.03%, V:0.12%, Cr:0.55%, Bi:0.001%, Pb≤0.003% keep 5- to smelting furnace, and when being warming up to 900 DEG C 10min, finally investment Al to mass percent reaches 100%, and sprinkles one layer of coverture covering, after furnace charge is completely melt, Surface scum is clawed, keeping melting in-furnace temperature is 900-940 DEG C, and stirring melt 15-20min obtains molten aluminium alloy；
2) cast: by obtained aluminium alloy solution temperature be 800 DEG C, casting speed be 90mm/min under conditions of cast As casting rod, the stub that length is 500mm is cut into, removes the oxide skin on its surface, obtains aluminium alloy cast ingot；
3) it anneals: obtained aluminium alloy cast ingot being warmed to 485 DEG C in inert gas, 1-1.5h is kept, then heats To 500 DEG C, 0.5-1h is kept, homogenizing annealing 15h is then carried out under conditions of annealing temperature is 465 DEG C；
4) it is heat-treated: aluminium alloy cast ingot being put into resistance-heated furnace and carries out double-stage heating, aluminium alloy cast ingot is heated to 380 DEG C of heat preservation 45min after air-cooled, continue to be heated to 480 DEG C of heat preservation 4h. aluminium alloy cast ingot that obtains that treated；
5) drawing tube reducing: aluminium alloy cast ingot is put into extruder and is squeezed into Φ 10mm bar, extrusion speed 4-4.5m/ Rods and bars of aluminium alloy is put into wire drawing machine and carries out drawing tube reducing, subtracted on wire drawing machine with the speed of 12m/min, 10-15% by min Diameter rate distinguishes drawing copper wire base and aluminium alloy wire base, until diameter is 0.8-1.2mm, obtains aluminium alloy wires；
6) aluminium alloy wires timeliness: is subjected to two-stage time effect, wherein it is 450-520 DEG C that first order timeliness, which is heated to temperature, 1-2h is kept, then by after its water cooling to room temperature, then carries out secondary time effect heat treatment, it is 240- that second level timeliness, which is heated to temperature, 260 DEG C, 4-6h is kept the temperature, then be air-cooled to room temperature, obtain timeliness cable core；
7) it forms: in 15 minutes after timeliness cable core again solution hardening, will be placed in liquid nitrogen after carrying out cold treatment and obtain Aluminium alloy electric cable core, wherein cold treatment temperature is -150 DEG C~-130 DEG C, soaking time 1-2h.
In step 3), used inert gas is nitrogen.
Embodiment 3
Refering to fig. 1 shown in -2, a kind of environment-friendly type aluminium alloy electric cable core includes restrictive coating 1, filled layer 2 and cable floor 3, The restrictive coating 1 includes enhancing braiding layer 11, external shielding layer 12 and high-temperature-resistant layer 13, and the filled layer 2 includes flame-retardant strip 21 and gasket for packing 22, the cable floor 3 be twisted by three cable cores 31, between each cable core 31 be equipped with limit every Item 32,32 set there are three the holding tank 33 that is arranged in the shape of a spiral on the limit parting bead, and each cable core 31 is all caught in In fixed in holding tank 33, be also cased with aluminium set 34 outside the cable floor 3, the aluminium set 34 be tightly attached to cable core 31 and limit every At arc section outside item 32, the enhancing braiding layer 11, external shielding layer 12 and high-temperature-resistant layer 13 are concentric setting, the external screen Covering layer 12 is ferrous alloy, and the enhancing braiding layer 11 is woven by flexible ethylene base resin, and the cable core 31 applies outside It is covered with silicone oil, the holding tank 33 is in equidistant arrangement on limit parting bead 32.
A kind of cable core is made of the raw material of following mass percent number meter: Mg:2%, Cu:5.5%, Fe:0.3%, Ga:0.2%, Zr:1.75%, Sc:0.04%, Sb:0.01%, Ti:0.2%, B:0.45%, Ag:0.01%, Co:1.4%, Tm:0.1%, Y:0.05%, W:0.035%, V:0.18%, Cr:0.6%, Bi:0.002%, Pb≤0.003%, surplus Al And inevitable impurity.
A kind of preparation method of cable core, comprising the following steps:
1) ingredient and melting: according to mass percent ingredient: Mg:2%, Cu:5.5%, Fe:0.3%, Ga:0.2%, Zr: 1.75%, Sc:0.04%, Sb:0.01%, Ti:0.2%, B:0.45%, Ag:0.01%, Co:1.4%, Tm:0.1%, Y: 0.05%, W:0.035%, V:0.18%, Cr:0.6%, Bi:0.002%, Pb≤0.003%, surplus is for Al and unavoidably Smelting furnace is added in impurity, when being warming up to 800 DEG C, sprinkles one layer of coverture covering and it is floating to claw surface after furnace charge is completely melt Slag, keeping melting in-furnace temperature is 900-940 DEG C, and stirring melt 15-20min obtains molten aluminium alloy；
2) cast: by obtained aluminium alloy solution temperature be 800 DEG C, casting speed be 90mm/min under conditions of cast As casting rod, the stub that length is 500mm is cut into, removes the oxide skin on its surface, obtains aluminium alloy cast ingot；
3) it anneals: obtained aluminium alloy cast ingot being warmed to 485 DEG C in inert gas, 1-1.5h is kept, then heats To 500 DEG C, 0.5-1h is kept, homogenizing annealing 15h is then carried out under conditions of annealing temperature is 465 DEG C；
4) it is heat-treated: aluminium alloy cast ingot being put into resistance-heated furnace and carries out double-stage heating, aluminium alloy cast ingot is heated to 380 DEG C of heat preservation 45min after air-cooled, continue to be heated to 480 DEG C of heat preservation 4h. aluminium alloy cast ingot that obtains that treated；
5) drawing tube reducing: aluminium alloy cast ingot is put into extruder and is squeezed into Φ 10mm bar, extrusion speed 4-4.5m/ Rods and bars of aluminium alloy is put into wire drawing machine and carries out drawing tube reducing, subtracted on wire drawing machine with the speed of 12m/min, 10-15% by min Diameter rate distinguishes drawing copper wire base and aluminium alloy wire base, until diameter is 0.8-1.2mm, obtains aluminium alloy wires；
6) aluminium alloy wires timeliness: is subjected to two-stage time effect, wherein it is 450-520 DEG C that first order timeliness, which is heated to temperature, 1-2h is kept, then by after its water cooling to room temperature, then carries out secondary time effect heat treatment, it is 240- that second level timeliness, which is heated to temperature, 260 DEG C, 4-6h is kept the temperature, then be air-cooled to room temperature, obtain timeliness cable core；
7) it forms: in 15 minutes after timeliness cable core again solution hardening, will be placed in liquid nitrogen after carrying out cold treatment and obtain Aluminium alloy electric cable core, wherein cold treatment temperature is -150 DEG C~-130 DEG C, soaking time 1-2h.
In step 3), used inert gas is nitrogen.
Experimental example
The aluminium alloy capability parameter that the present embodiment 1-3 is prepared is compared with existing 6061 aluminium alloy capability parameter Right, wherein Resistivity testing standard is GBT 1410-2006, and conductivity examination criteria is GB 11007-1989, elongation at break Examination criteria is FZ/T60005-1991, and tensile strength examination criteria is GB 8403.5-1987, and yield strength examination criteria is GB/T 228-2002, testing result are as shown in the table:
By upper Biao Ke get, made aluminium alloy electric cable core obviously has compared to existing 6061 aluminium alloy in the present embodiment Have lower resistivity and higher conductivity, meanwhile, elongation at break, tensile strength, yield strength also obviously due to Existing aluminium alloy, comprehensive performance have the raising of conspicuousness compared to existing aluminium alloy.
The beneficial effects of the present invention are: it is small to reduce the consuming of packing material and linear resistance by designing for aluminium set, Contact of the aluminium set with cable conductor becomes cambered surface by threadiness, is no longer completely cut off by air, heat dissipation effect is greatly improved, and takes in inside Match limit parting bead, avoided the contact of each cable core in aluminium set, has inhibited to wear broken string caused by the bending because of cable, in addition, Special cable core is additionally used, on the basis of Al, and is added to micro Cu, Mg, Ga, Y, W, V these types element, When forming the alloy carbide of Dispersed precipitate, so that the hardness of cable core, intensity and wearability are dramatically increased, meanwhile, Mn, Co, Tm's dissolves in, and can form distortion of lattice, further intensity, the hardness for increasing cable core, and passes through control section bar extrusion Speed and squeeze pressure increase the uniformity of the interior tissue of aluminum material and the refinement of crystal grain, improve under water cooling state The quality and processing performance of aluminium alloy electric cable core.
Certainly, above is representative instance of the invention, and in addition to this, the present invention can also have other a variety of specific implementations Mode, all technical solutions formed using equivalent substitution or equivalent transformation, is all fallen within the scope of protection of present invention.

Claims (5)

1. a kind of environment-friendly type aluminium alloy electric cable core, it is characterised in that: include restrictive coating, filled layer and cable floor, the sheath Layer includes that enhancing braiding layer, external shielding layer and high-temperature-resistant layer, the filled layer include flame-retardant strip and gasket for packing, the cable Layer is twisted by three cable cores, and limit parting bead is equipped between each cable core, set on the limit parting bead there are three The holding tank being arranged in the shape of a spiral, each cable core all snap into fixed in holding tank.
2. environment-friendly type aluminium alloy electric cable core as described in claim 1, it is characterised in that: it is also cased with aluminium set outside the cable floor, The aluminium set is tightly attached to cable core and is limited at the arc section outside parting bead.
3. environment-friendly type aluminium alloy electric cable core as described in claim 1, it is characterised in that: the enhancing braiding layer, external shielding layer It is concentric setting with high-temperature-resistant layer.
4. environment-friendly type aluminium alloy electric cable core as described in claim 1, it is characterised in that: the external shielding layer is ferrous alloy, The enhancing braiding layer is woven by flexible ethylene base resin, and silicone oil is coated with outside the cable core.
5. environment-friendly type aluminium alloy electric cable core as described in claim 1, it is characterised in that: the holding tank limit parting bead on be in Equidistant arrangement.
CN201810805401.2A 2018-07-20 2018-07-20 A kind of environment-friendly type aluminium alloy electric cable core and its cable core and preparation Withdrawn CN108986957A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109912863A (en) * 2019-03-26 2019-06-21 盐城市科恒达材料有限公司 A kind of environmental protection cable wire and preparation method thereof
CN110970169A (en) * 2019-12-24 2020-04-07 浙江正泰电缆有限公司 Anti-shearing aluminum alloy cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109912863A (en) * 2019-03-26 2019-06-21 盐城市科恒达材料有限公司 A kind of environmental protection cable wire and preparation method thereof
CN110970169A (en) * 2019-12-24 2020-04-07 浙江正泰电缆有限公司 Anti-shearing aluminum alloy cable

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Application publication date: 20181211