CN109903890A - A kind of wind resistance ice-melting type special type conducting wire and its production method - Google Patents
A kind of wind resistance ice-melting type special type conducting wire and its production method Download PDFInfo
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- CN109903890A CN109903890A CN201910269849.1A CN201910269849A CN109903890A CN 109903890 A CN109903890 A CN 109903890A CN 201910269849 A CN201910269849 A CN 201910269849A CN 109903890 A CN109903890 A CN 109903890A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention belongs to transmission pressure technical fields, and in particular to a kind of wind resistance ice-melting type special type conducting wire and its production method.Wind resistance ice-melting type special type conducting wire is constituted by support core, and with the inner conducting layer of support core concentric stranding and outer conductive ice-melt layer；Support core is aluminium packet invar steel core；Inner conducting layer and outer conductive ice-melt layer are made of aluminium alloy wire, and aluminium alloy wire constituent content is indicated with mass percent are as follows: Zr0.3~0.32, Sc0.1, Re0.2.Wind resistance ice-melting type special type conducting wire of the invention improves the running temperature and conductivity of cable using elements such as zirconium, rhenium, scandium, rare earths, cable operating temperature is high, current-carrying capacity is big, it can be realized effective ice-melt, the performances such as resistance and tensile strength are very excellent simultaneously, dilatation can be achieved that under conditions of being changed without shaft tower, efficiently solve the problems, such as removing ice from cable and the power grid dilatation in heavy ice area.
Description
Technical field
The invention belongs to transmission pressure technical fields, and in particular to a kind of wind resistance ice-melting type special type conducting wire and its producer
Method.
Background technique
China has a vast territory, and rivers and lakes, high mountain gorge is numerous, and cross-region weather environment is changeable, strong wind, ice rain, icing
The failures such as conducting wire ice-shedding, phase fault, conducting wire collision lightning conducter are easily led to, the disconnected of wire breaking and tower falling is be easy to cause when serious
Electrification, these seriously threaten people's property safety.Overhead transmission line is faced with various particular surroundings, extreme terrain
It is very urgent to improve aerial condutor safety in operation for test.For the transmission of electricity demand for meeting heavy icing area, solves plain conductor and easily cover
The problem of ice, it is therefore necessary to design a kind of wind resistance ice-melting type special type conducting wire and preparation method thereof.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of wind resistance ice-melting type special type conducting wire and its production methods, full
The transmission of electricity demand of lumping weight ice formation solves the problems, such as the easy icing of plain conductor, realizes the effect of cable wind resistance ice-melt.
The invention is realized in this way a kind of wind resistance ice-melting type special type conducting wire, including support core, twine with support core concentric stranding
Around inner conducting layer and the outer conductive ice-melt layer that is covered on inner conducting layer, support core be aluminium packet invar steel core, inner conducting layer and lead outside
Electric ice-melt layer is made of aluminium alloy wire；
By mass percentage, aluminium alloy wire includes following component, Zr:0.3~0.32%, Sc:0.1%, Re:0.2%,
Remaining is Al and can not remove impurity.
Further, the support core is made of the aluminium packet invar line that filament diameter is 2.81 ± 0.04mm；The interior conduction
Layer is made of the aluminium alloy wire of 5.59 ± 0.05mm of equivalent diameter；The outer conductive ice-melt layer by equivalent diameter be 4.22 ±
The aluminium alloy wire of 0.04mm forms.
Further, the outer surface of the outer conductive ice-melt layer is provided with plurality of openings, and opening angle is 30~
120°。
The present invention also provides the production methods of above-mentioned wind resistance ice-melting type special type conducting wire, include the following steps:
1) smelting aluminium alloy, continuous casting and rolling, quenching, carrying out precipitation treatment, wire drawing；
2) cleaning of invar silk, aluminium coat invar silk, wire drawing, are twisted；
3) aluminium alloy wire and aluminium packet invar steel core are twisted.
Further, in step 1), smelting aluminium alloy step are as follows: melt the aluminium ingot of purity >=99.85% in smelting furnace
It is melted into molten aluminum, molten aluminum is filled into holding furnace and is kept the temperature；According to the ratio by aluminium zircaloy, aluminium-scandium alloy, aluminium rhenium alloys, aluminium rare earth
Alloy melts at 750 DEG C, then is warming up to 770~780 DEG C；After being sufficiently mixed, then it is passed through refining agent and is refined, skimmed；It adjusts
Whole molten aluminum component, constituent content are indicated with mass percent are as follows: Zr 0.3~0.32%, Sc 0.1%, Re 0.2%；Gained
Molten aluminum keeps the temperature 40~50min at 750~760 DEG C.
Further, in step 1), using horizontal casting, cast temperature is 690-710 DEG C for continuous casting and rolling, crystallization rotation
Speed is 1.9RPM, and cooling water temperature is 22~25 DEG C；Continuously casting is carried out using casting machine and obtains ingot blank；Pass through induction heating
530 DEG C are heated to, rolling system is sent into and carries out continuous rolling；The rolling system is by 4 roughing mills and 10 finishing mill series connection
It forms, the mill speed 1100RPM of roughing mill, the mill speed 1300RPM of finishing mill；Concentration of emulsion used 11.5 when rolling~
12.3%, 45~55 DEG C of emulsion temperature, 160~220kPa of emulsion pressure.
Further, in step 1), the control of quenching pressure quenches coolant-temperature gage and is lower than 28 DEG C in 160~200kpa；Wire drawing
For the mold control disengaging mold compression of process configurations than 1.1~1.3, opening angle is 30~120 °.
Further, in step 2), wire drawing is carried out using bimetallic wire drawing machine, selects 7 die wire drawings.
Further, in step 2), pipe twisting machine is selected to carry out aluminium packet invar silk process, lay ratio is controlled 16~26；It twists
In line process, destressing device is used.
Compared with the prior art, the advantages of the present invention are as follows:
(1) wind resistance ice-melting type special type conducting wire of the invention improves the operation temperature of cable using elements such as zirconium, rhenium, scandium, rare earths
Degree and conductivity, cable operating temperature is high, and current-carrying capacity is big, can be realized effective ice-melt, while the performances such as resistance and tensile strength
It is very excellent, dilatation can be achieved that under conditions of being changed without shaft tower, efficiently solve the removing ice from cable in heavy ice area
With power grid dilatation problem.
(2) outer surface of wind resistance ice-melting type special type conducting wire of the invention, outer conduction ice-melt layer is provided with opening, angular aperture
Degree is 30~120 °, and angular aperture is the surface shape design wire external layer structure for imitating water droplet, and conducting wire is made to receive wind-force effect
When, the resistance to wind is reduced, the wind resistance of cable is improved.
(3) production technology of wind resistance ice-melting type special type conducting wire of the invention uses zirconium, rhenium, scandium, rare earth, improves zirconium content
Height improves the running temperature of aluminium alloy, and the increase conductivity of zirconium content can decline, it is conductive then to improve heat-resisting aluminium alloy with scandium
Rate, rare earth fining crystal grain improve the tensile strength and elongation of aluminium alloy wire.
(4) production technology of wind resistance ice-melting type special type conducting wire of the invention is selected and is cleaned to aluminium bar and invar line,
The intensity that ensure that aluminium packet invar line improves performance and the service life of conducting wire.
Detailed description of the invention
Fig. 1 is cross-sectional structure schematic diagram of the invention (angular aperture is 30.45 °)；
Fig. 2 is cross-sectional structure schematic diagram of the invention (angular aperture is 43.75 °)；
Fig. 3 is cross-sectional structure schematic diagram of the invention (angular aperture is 90 °).
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments,
The present invention will be described in further detail.It should be appreciated that specific embodiment described herein is used only for explaining this hair
It is bright, it is not intended to limit the present invention.
Embodiment 1,
With reference to Fig. 1, the wind resistance ice-melting type special type conducting wire of the present embodiment, by support core 1, and in 1 concentric stranding of support core
Conductive layer 2 and outer conductive ice-melt layer 3 are constituted.Support core 1 is aluminium packet invar steel core.Inner conducting layer 2 and outer conductive ice-melt layer 3 are closed by aluminium
Gold thread composition, the constituent content of aluminium alloy wire are indicated with mass percent are as follows: Zr0.3, Sc0.1, Re0.2, remaining is for Al and not
Impurity can be removed.Zirconium content height is improved to improve the running temperature of aluminium alloy, the increase conductivity of zirconium content can decline, then
Heat-resisting aluminium alloy conductivity is improved with scandium, rare earth fining crystal grain improves the tensile strength and elongation of aluminium alloy wire.
Outer conduction ice-melt layer 3 is made of the aluminium alloy round wires that equivalent diameter is 4.22 ± 0.04mm.
Inner conducting layer 2 is made of the aluminum alloy round molded line of 5.59 ± 0.05mm of equivalent diameter.Support core 1 is by filament diameter
The aluminium packet invar line of 2.81 ± 0.04mm forms.
The outer surface of outer conduction ice-melt layer 3 is provided with 4 openings, and opening angle is 30.45 °, and (angular aperture is exactly adjacent two
Angle between a recess).Angular aperture is the surface shape design wire external layer structure for imitating water droplet, and conducting wire is made to receive wind-force work
Used time reduces the resistance to wind, improves the wind resistance of cable.
Wind resistance ice-melting type special type conducting wire heats whole cable by outer conductive ice-melt layer 3, and longtime running temperature is 220 DEG C,
Transmission line capability 2397A is 3.15 times of conventional steel core aluminum stranded conductor transmission line capability.Direct current at 20 DEG C of conducting wire of wind resistance ice-melting type special type
≤ 0.0459 Ω/km is hindered, AC resistance≤0.0565 Ω/km at 220 DEG C, whole pulling force >=141.38kN, 20 DEG C of conductor resistances
Rate is≤0.028735 Ω mm2/ m, minimum tensile strength 159MPa, elongation >=3.0%, conductivity >=60%IACS,
230 DEG C after high-temperature process 1 hour, tensile strength survival rate >=90%.Aluminium packet invar monofilament tensile strength >=1100MPa,
1% elongation stress >=950MPa, elongation >=1.0%, conductivity >=14%IACS.Resistance is small, and conductivity is high, when operation
Electric energy loss is small.
The production technology of above-mentioned wind resistance ice-melting type special type conducting wire, comprising the following steps:
S1: smelting aluminium alloy.Continuous casting and rolling.Quenching.Carrying out precipitation treatment.Wire drawing.
Smelting aluminium alloy: being fused into molten aluminum for the aluminium ingot of purity >=99.85% in smelting furnace, and molten aluminum is filled into guarantor
It is kept the temperature in warm furnace.Aluminium zircaloy, aluminium-scandium alloy, aluminium rhenium alloys, Al rare earth alloy are melted at 750 DEG C according to the ratio, then heated up
To 770 DEG C.After being sufficiently mixed, then it is passed through refining agent and is refined, skimmed.Then according to the weight of each component in formula after analyzing
Amount carries out feed supplement to molten aluminum and gained molten aluminum is kept the temperature 40min at 750 DEG C than adjustment molten aluminum component.Using zirconium, rhenium, scandium, dilute
Native (60% is aluminium lanthanum alloy in rare earth aluminium alloy, and 40% is aluminium cerium alloy) improves zirconium content height to improve the operation of aluminium alloy
The increase conductivity of temperature, zirconium content can decline, and then improve heat-resisting aluminium alloy conductivity with scandium, and rare earth fining crystal grain improves
The tensile strength and elongation of aluminium alloy wire.
Continuous casting and rolling: using horizontal casting, cast temperature is 690 DEG C, and crystallization wheel speed is 1.9RPM, cooling water temperature
It is 22 DEG C.Continuously casting is carried out using casting machine and obtains ingot blank.Be heated to 530 DEG C by induction heating, be sent into rolling system into
Row continuous rolling.Rolling system is connected in series by 4 roughing mills and 10 finishing mills, the mill speed 1100RPM of roughing mill,
The mill speed 1300RPM of finishing mill.Concentration of emulsion used 11.5% when rolling, emulsion temperature 45 C, emulsion pressure
160kPa。
Quenching: the control of quenching pressure quenches coolant-temperature gage control and is being lower than 28 DEG C in 160kpa.
Wire drawing: for the mold control disengaging mold compression of wire-drawing process configuration than 1.1, opening angle is 30 °.
S2: invar silk cleaning.Aluminium coats invar silk.Wire drawing.It is twisted.
Cleaning: aluminium rod surface should clean, and should not have the defects of flanging, wrong circle, crackle, field trash, kink and other shadows
The defect used is rung, allows to have slight mechanical abrasion, scabbing, pockmark, peeling or overlap etc..
Invar silk cleaning speed is generally 30m/min.Invar line surface should be clean after cleaning, and non-oxidation iron rust is done
Dry, not damaged, winding displacement is neat.Within the clean invar silk storage period is no more than 24 hours, preferably 8 hours after cleaning, otherwise
It should clean again.
Aluminium coats invar silk: it coats and uses 9.5 ± 0.4mm of aluminium bar diameter, tensile strength≤110MPa, elongation >=
13%, resistivity≤27.85n Ω m at 20 DEG C, out-of-roundness≤0.9.Aluminium coat invar silk using continuous coating assembly line into
Row cladding.Cladding speed is 135m/min.It should be preheated before invar cladding.Take-up uses the dedicated drum of PN1400 type, does not permit
Perhaps blank bar in upper layer is pressed into lower layer.
Wire drawing: wire drawing is carried out using bimetallic wire drawing machine, guarantees aluminium layer and invar synchro-draw.Select 7 die wire drawings.It draws
Aluminium 2.81 ± 0.04mm of packet invar line diameter of system, 20 DEG C of resistivity≤123.15n Ω m, tensile strength >=1100MPa,
Aluminium layer minimum thickness >=0.1124mm.
It is twisted: to select pipe twisting machine to carry out aluminium packet invar silk process, lay ratio is controlled 16.During twisted wire, using going to answer
Power device guarantees that all aluminium packet invar lines should be naturally in respective position after being twisted.
S3: aluminium alloy wire and aluminium packet invar steel core are twisted through frame type stranding machine.
The conducting wire transmission line capability of the present embodiment is 3 times of equal-specification steel-cored aluminium strand, under conditions of meeting wind resistance ice-melt,
Improve 3 times of transmission line capability.
Embodiment 2,
With reference to Fig. 2, the wind resistance ice-melting type special type conducting wire of the present embodiment, by support core 1, and in 1 concentric stranding of support core
Conductive layer 2 and outer conductive ice-melt layer 3 are constituted.Support core 1 is aluminium packet invar steel core.Inner conducting layer 2 and outer conductive ice-melt layer 3 are closed by aluminium
Gold thread composition, aluminium alloy wire constituent content are indicated with mass percent are as follows: Zr0.31, Sc0.1, Re0.2, remaining is for Al and not
Impurity can be removed.Zirconium content height is improved to improve the running temperature of aluminium alloy, the increase conductivity of zirconium content can decline, then
Heat-resisting aluminium alloy conductivity is improved with scandium, rare earth fining crystal grain improves the tensile strength and elongation of aluminium alloy wire.
Outer conduction ice-melt layer 3 is made of the aluminium alloy round wires that equivalent diameter is 4.22 ± 0.04mm.
Inner conducting layer 2 is made of the aluminum alloy round molded line of 5.59 ± 0.05mm of equivalent diameter.Support core 1 is by filament diameter
The aluminium packet invar line of 2.81 ± 0.04mm forms.
The outer surface of outer conduction ice-melt layer 3 is provided with 11 openings, and opening angle is 43.75 °.Angular aperture is to imitate water
The surface shape of drop designs wire external layer structure, when conducting wire being made to receive wind-force effect, reduces the resistance to wind, improves cable
Wind resistance.
Wind resistance ice-melting type special type conducting wire heats whole cable by outer conductive ice-melt layer 3, and longtime running temperature is 220 DEG C,
Transmission line capability 2397A is 3.15 times of conventional steel core aluminum stranded conductor transmission line capability.Direct current at 20 DEG C of conducting wire of wind resistance ice-melting type special type
≤ 0.0459 Ω/km is hindered, AC resistance≤0.0565 Ω/km at 220 DEG C, whole pulling force >=141.38kN, 20 DEG C of conductor resistances
Rate is≤0.028735 Ω mm2/ m, minimum tensile strength 159MPa, elongation >=3.0%, conductivity >=60%IACS,
230 DEG C after high-temperature process 1 hour, tensile strength survival rate >=90%.Aluminium packet invar monofilament tensile strength >=1100MPa,
1% elongation stress >=950MPa, elongation >=1.0%, conductivity >=14%IACS.Resistance is small, and conductivity is high, when operation
Electric energy loss is small.
It further include the production technology of wind resistance ice-melting type special type conducting wire, comprising the following steps:
S1: smelting aluminium alloy.Continuous casting and rolling.Quenching.Carrying out precipitation treatment.Wire drawing.
Smelting aluminium alloy: being fused into molten aluminum for the aluminium ingot of purity >=99.85% in smelting furnace, and molten aluminum is filled into guarantor
It is kept the temperature in warm furnace.Aluminium zircaloy, aluminium-scandium alloy, aluminium rhenium alloys, Al rare earth alloy are melted at 750 DEG C according to the ratio, then heated up
To 775 DEG C.After being sufficiently mixed, then it is passed through refining agent and is refined, skimmed.Then according to the weight of each component in formula after analyzing
Amount carries out feed supplement to molten aluminum and gained molten aluminum is kept the temperature 45min at 755 DEG C than adjustment molten aluminum component.Using zirconium, rhenium, scandium, dilute
Soil improves zirconium content height to improve the running temperature of aluminium alloy, and the increase conductivity of zirconium content can decline, then be improved with scandium
Heat-resisting aluminium alloy conductivity, rare earth fining crystal grain improve the tensile strength and elongation of aluminium alloy wire.
Continuous casting and rolling: using horizontal casting, cast temperature is 700 DEG C, and crystallization wheel speed is 1.9RPM, cooling water temperature
It is 23 DEG C.Continuously casting is carried out using casting machine and obtains ingot blank.Be heated to 530 DEG C by induction heating, be sent into rolling system into
Row continuous rolling.Rolling system is connected in series by 4 roughing mills and 10 finishing mills, the mill speed 1100RPM of roughing mill,
The mill speed 1300RPM of finishing mill.Concentration of emulsion used 12% when rolling, emulsion temperature 50 C, emulsion pressure
190kPa。
Quenching: the control of quenching pressure quenches coolant-temperature gage and is lower than 28 DEG C in 180kpa.
Wire drawing: for the mold control disengaging mold compression of wire-drawing process configuration than 1.2, opening angle is 90 °.
S2: invar silk cleaning.Aluminium coats invar silk.Wire drawing.It is twisted.
Cleaning: aluminium rod surface should clean, and should not have the defects of flanging, wrong circle, crackle, field trash, kink and other shadows
The defect used is rung, allows to have slight mechanical abrasion, scabbing, pockmark, peeling or overlap etc..
Invar silk cleaning speed is generally 40m/min.Invar line surface should be clean after cleaning, and non-oxidation iron rust is done
Dry, not damaged, winding displacement is neat.Within the clean invar silk storage period is no more than 24 hours, preferably 8 hours after cleaning, otherwise
It should clean again.
Aluminium coats invar silk: it coats and uses 9.5 ± 0.4mm of aluminium bar diameter, tensile strength≤110MPa, elongation >=
13%, resistivity≤27.85n Ω m at 20 DEG C, out-of-roundness≤0.9.Aluminium coat invar silk using continuous coating assembly line into
Row cladding.Cladding speed is 136m/min.It should be preheated before invar cladding.Take-up uses the dedicated drum of PN1400 type, does not permit
Perhaps blank bar in upper layer is pressed into lower layer.
Wire drawing: wire drawing is carried out using bimetallic wire drawing machine, guarantees aluminium layer and invar synchro-draw.Select 7 die wire drawings.It draws
Aluminium 2.81 ± 0.04mm of packet invar line diameter of system, 20 DEG C of resistivity≤123.15n Ω m, tensile strength >=1100MPa,
Aluminium layer minimum thickness >=0.1124mm.
It is twisted: to select pipe twisting machine to carry out aluminium packet invar silk process, lay ratio is controlled 21.During twisted wire, using going to answer
Power device guarantees that all aluminium packet invar lines should be naturally in respective position after being twisted.
S3: aluminium alloy wire and aluminium packet invar steel core are twisted through frame type stranding machine.
Embodiment 3,
With reference to Fig. 3, the wind resistance ice-melting type special type conducting wire of the present embodiment, by support core 1, and in 1 concentric stranding of support core
Conductive layer 2 and outer conductive ice-melt layer 3 are constituted.Support core 1 is aluminium packet invar steel core.Inner conducting layer 2 and outer conductive ice-melt layer 3 are closed by aluminium
Gold thread composition, aluminium alloy wire constituent content are indicated with mass percent are as follows: Zr0.32, Sc0.1, Re0.2, remaining is for Al and not
Impurity can be removed.Zirconium content height is improved to improve the running temperature of aluminium alloy, the increase conductivity of zirconium content can decline, then
Heat-resisting aluminium alloy conductivity is improved with scandium, rare earth fining crystal grain improves the tensile strength and elongation of aluminium alloy wire.
Outer conduction ice-melt layer 3 is made of the aluminium alloy round wires that equivalent diameter is 4.22 ± 0.04mm.
Inner conducting layer 2 is made of the aluminum alloy round molded line of 5.59 ± 0.05mm of equivalent diameter.Support core 1 is by filament diameter
The aluminium packet invar line of 2.81 ± 0.04mm forms.
The outer surface of outer conduction ice-melt layer 3 is provided with 18 openings, and opening angle is 90 °.Angular aperture is to imitate water droplet
Surface shape designs wire external layer structure, when conducting wire being made to receive wind-force effect, reduces the resistance to wind, improves the anti-of cable
Wind performance.
Wind resistance ice-melting type special type conducting wire heats whole cable by outer conductive ice-melt layer 3, and longtime running temperature is 220 DEG C,
Transmission line capability 2397A is 3.15 times of conventional steel core aluminum stranded conductor transmission line capability.Direct current at 20 DEG C of conducting wire of wind resistance ice-melting type special type
≤ 0.0459 Ω/km is hindered, AC resistance≤0.0565 Ω/km at 220 DEG C, whole pulling force >=141.38kN, 20 DEG C of conductor resistances
Rate is≤0.028735 Ω mm2/ m, minimum tensile strength 159MPa, elongation >=3.0%, conductivity >=60%IACS,
230 DEG C after high-temperature process 1 hour, tensile strength survival rate >=90%.Aluminium packet invar monofilament tensile strength >=1100MPa,
1% elongation stress >=950MPa, elongation >=1.0%, conductivity >=14%IACS.Resistance is small, and conductivity is high, when operation
Electric energy loss is small.
It further include the production technology of wind resistance ice-melting type special type conducting wire, comprising the following steps:
S1: smelting aluminium alloy.Continuous casting and rolling.Quenching.Carrying out precipitation treatment.Wire drawing.
Smelting aluminium alloy: being fused into molten aluminum for the aluminium ingot of purity >=99.85% in smelting furnace, and molten aluminum is filled into guarantor
It is kept the temperature in warm furnace.Aluminium zircaloy, aluminium-scandium alloy, aluminium rhenium alloys, Al rare earth alloy are melted at 750 DEG C according to the ratio, then heated up
To 780 DEG C.After being sufficiently mixed, then it is passed through refining agent and is refined, skimmed.Then according to the weight of each component in formula after analyzing
Amount carries out feed supplement to molten aluminum and gained molten aluminum is kept the temperature 50min at 760 DEG C than adjustment molten aluminum component.Using zirconium, rhenium, scandium, dilute
Soil improves zirconium content height to improve the running temperature of aluminium alloy, and the increase conductivity of zirconium content can decline, then be improved with scandium
Heat-resisting aluminium alloy conductivity, rare earth fining crystal grain improve the tensile strength and elongation of aluminium alloy wire.
Continuous casting and rolling: using horizontal casting, cast temperature is 710 DEG C, and crystallization wheel speed is 1.9RPM, cooling water temperature
It is 25 DEG C.Continuously casting is carried out using casting machine and obtains ingot blank.Be heated to 530 DEG C by induction heating, be sent into rolling system into
Row continuous rolling.Rolling system is connected in series by 4 roughing mills and 10 finishing mills, the mill speed 1100RPM of roughing mill,
The mill speed 1300RPM of finishing mill.Concentration of emulsion used 12.3% when rolling, 55 DEG C of emulsion temperature, emulsion pressure
220kPa。
Quenching: the control of quenching pressure quenches coolant-temperature gage and is lower than 28 DEG C in 200kpa.
Wire drawing: for the mold control disengaging mold compression of wire-drawing process configuration than 1.3, opening angle is 120 °.
S2: invar silk cleaning.Aluminium coats invar silk.Wire drawing.It is twisted.
Cleaning: aluminium rod surface should clean, and should not have the defects of flanging, wrong circle, crackle, field trash, kink and other shadows
The defect used is rung, allows to have slight mechanical abrasion, scabbing, pockmark, peeling or overlap etc..
Invar silk cleaning speed is generally 50m/min.Invar line surface should be clean after cleaning, and non-oxidation iron rust is done
Dry, not damaged, winding displacement is neat.Within the clean invar silk storage period is no more than 24 hours, preferably 8 hours after cleaning, otherwise
It should clean again.
Aluminium coats invar silk: it coats and uses 9.5 ± 0.4mm of aluminium bar diameter, tensile strength≤110MPa, elongation >=
13%, resistivity≤27.85n Ω m at 20 DEG C, out-of-roundness≤0.9.Aluminium coat invar silk using continuous coating assembly line into
Row cladding.Cladding speed is 138m/min.It should be preheated before invar cladding.Take-up uses the dedicated drum of PN1400 type, does not permit
Perhaps blank bar in upper layer is pressed into lower layer.
Wire drawing: wire drawing is carried out using bimetallic wire drawing machine, guarantees aluminium layer and invar synchro-draw.Select 7 die wire drawings.It draws
Aluminium 2.81 ± 0.04mm of packet invar line diameter of system, 20 DEG C of resistivity≤123.15n Ω m, tensile strength >=1100MPa,
Aluminium layer minimum thickness >=0.1124mm.
It is twisted: to select pipe twisting machine to carry out aluminium packet invar silk process, lay ratio is controlled 26.During twisted wire, using going to answer
Power device guarantees that all aluminium packet invar lines should be naturally in respective position after being twisted.
S3: aluminium alloy wire and aluminium packet invar steel core are twisted through frame type stranding machine.
The conducting wire of 1 embodiment 1 of table and conducting wire performance comparison of the same race
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (9)
1. a kind of wind resistance ice-melting type special type conducting wire, which is characterized in that including support core, the inner conducting layer with the winding of support core concentric stranding
With the outer conductive ice-melt layer being covered on inner conducting layer, support core is aluminium packet invar steel core, and inner conducting layer and outer conductive ice-melt layer are by aluminium
Alloy wire composition；
By mass percentage, aluminium alloy wire includes following component, Zr:0.3~0.32%, Sc:0.1%, Re:0.2%, remaining
For Al and impurity can not be removed.
2. wind resistance ice-melting type special type conducting wire according to claim 1, which is characterized in that the support core is by filament diameter
The aluminium packet invar line of 2.81 ± 0.04mm forms；The inner conducting layer by 5.59 ± 0.05mm of equivalent diameter aluminium alloy wire group
At；The outer conductive ice-melt layer is made of the aluminium alloy wire that equivalent diameter is 4.22 ± 0.04mm.
3. wind resistance ice-melting type special type conducting wire according to claim 1, which is characterized in that the appearance of the outer conductive ice-melt layer
Face is provided with plurality of openings, and opening angle is 30~120 °.
4. a kind of production method of wind resistance ice-melting type special type conducting wire as described in claim 1, which is characterized in that including walking as follows
It is rapid:
1) smelting aluminium alloy, continuous casting and rolling, quenching, carrying out precipitation treatment, wire drawing；
2) cleaning of invar silk, aluminium coat invar silk, wire drawing, are twisted；
3) aluminium alloy wire and aluminium packet invar steel core are twisted.
5. the production method of wind resistance ice-melting type special type conducting wire according to claim 4, which is characterized in that in step 1), melt
Aluminium metallurgy alloy step are as follows: the aluminium ingot of purity >=99.85% is fused into molten aluminum in smelting furnace, molten aluminum is filled into holding furnace
Heat preservation；Aluminium zircaloy, aluminium-scandium alloy, aluminium rhenium alloys, Al rare earth alloy are melted at 750 DEG C according to the ratio, then it is warming up to 770~
780℃；After being sufficiently mixed, then it is passed through refining agent and is refined, skimmed；Molten aluminum component is adjusted, constituent content is with mass percent
It indicates are as follows: Zr0.3~0.32%, Sc0.1%, Re0.2%；Gained molten aluminum keeps the temperature 40~50min at 750~760 DEG C.
6. the production method of wind resistance ice-melting type special type conducting wire according to claim 4, which is characterized in that in step 1), even
Tandem rolling is cast using horizontal casting, and cast temperature is 690-710 DEG C, and crystallization wheel speed is 1.9RPM, and cooling water temperature is 22~25
℃；Continuously casting is carried out using casting machine and obtains ingot blank；530 DEG C are heated to by induction heating, rolling system is sent into and is connected
Continuous rolling；The rolling system is connected in series by 4 roughing mills and 10 finishing mills, the mill speed 1100RPM of roughing mill, essence
The mill speed 1300RPM of milling train；Concentration of emulsion used 11.5~12.3% when rolling, 45~55 DEG C of emulsion temperature, emulsion
160~220kPa of pressure.
7. the production method of wind resistance ice-melting type special type conducting wire according to claim 4, it is characterised in that: in step 1), quench
Pressure ignition control quenches coolant-temperature gage and is lower than 28 DEG C in 160~200kpa；The mold control disengaging mold compression ratio of wire-drawing process configuration
1.1~1.3, opening angle is 30~120 °.
8. the production method of wind resistance ice-melting type special type conducting wire according to claim 4, which is characterized in that in step 2), make
Wire drawing is carried out with bimetallic wire drawing machine, selects 7 die wire drawings.
9. the production method of wind resistance ice-melting type special type conducting wire according to claim 4, it is characterised in that: in step 2), choosing
Aluminium packet invar silk process is carried out with pipe twisting machine, lay ratio is controlled 16~26；During twisted wire, destressing device is used.
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| CN111584120A (en) * | 2020-05-20 | 2020-08-25 | 远东电缆有限公司 | Capacity-increasing wind resistance wire and preparation method thereof |
| CN113074655A (en) * | 2020-01-03 | 2021-07-06 | 成都安科泰丰科技有限公司 | Dynamic image wheel out-of-roundness monitoring method |
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