CN105355260B - Cable for tower and manufacturing method of cable - Google Patents

Cable for tower and manufacturing method of cable Download PDF

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Publication number
CN105355260B
CN105355260B CN201510881316.0A CN201510881316A CN105355260B CN 105355260 B CN105355260 B CN 105355260B CN 201510881316 A CN201510881316 A CN 201510881316A CN 105355260 B CN105355260 B CN 105355260B
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area
conductor
sheath
cable
wrapped
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CN105355260A (en
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张东杰
袁杰
李斌
刘雄军
梁福才
王雪松
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Jiangsu Shangshang Cable Group Co Ltd
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Jiangsu Shangshang Cable Group Co Ltd
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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
    • 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
    • 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
    • H01B7/02—Disposition of insulation
    • H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a cable for a tower. According to the structure of the cable, a plurality of aluminum alloy metal wires are stranded so as to from a conductor; the conductor is wrapped with an isolation strip; the isolation strip is wrapped with an insulating layer, so that a cable core can be formed; the insulating layer is wrapped with a sheath; the diameter of the aluminum alloy metal wires which form the conductor ranges from 1.0mm to 4.0 mm; and the stranding pitch of the stranding of the aluminum alloy metal wires is not larger the outer diameter of the stranded conductor by 14 times. The manufacturing method of the cable for the tower includes the following steps that: 1) a plurality of aluminum alloy metal wires and a filling material are stranded so as to form a conductor; 2) the conductor is wrapped with an isolation strip in a winding manner; 3) the isolation strip is wrapped with an insulating material in an extruding manner; and 4) the insulating layer is wrapped with a sheath in an extruding manner through continuous vulcanization. The cable manufactured by using the method can meet design requirements, and the qualified rate of the cable is more than 98%.

Description

A kind of tower cable and its manufacture method
Technical field
The technical program belongs to field of cable technology, specifically a kind of tower cable and its manufacture method.
Background technology
In prior art, wind-driven generator is more and more to be employed.The most ratios of the geographical environment of wind-power electricity generation place wind field It is relatively severe, such as low temperature, high temperature, High aititude, salt fog etc..Meanwhile, elapsing over time, cable also occurs creep.With The cable of other fields of employment is different, after wind energy turbine set is built up, due to the special line upkeep in geographical position it is relatively difficult, especially in wind Cable in the tower of group of motors, it is larger that it changes difficulty.Meanwhile, the shortcoming of copper core cable is price height, heavier-weight, construction And cost of transportation is high.
The content of the invention
In order to solve the above-mentioned problems in the prior art, the technical program proposes a kind of new tower cable, its Structure is：Conductor is constituted by many Al-alloy metal monofilament are stranded；Conductor is wrapped with isolation strip；Isolation strip outer wrapping insulation Layer；Insulating barrier outer wrapping sheath；Diameter range 1.0mm～the 4.0mm of the Al-alloy metal monofilament that the conductor is adopted.Aluminium alloy The stranded lay of metal monofilament is not more than 14 times of stranded rear conductor diameter.Isolation strip is non-hygroscopic twining package tape, using overlap Around packet mode, wrapped width of putting up is not less than 5mm.The main component of Al-alloy metal monofilament include Al, Si, Fe, Cu, Mg and Zn。
Insulating barrier is closely extruded in isolation belt surface；The Insulation Material of insulating barrier is：High electrical, resistance to -40 DEG C of low temperature, soft type And thermosetting.Specifically, Insulation Material can be ethylene propylene rubber insulation material (meet outside the requirement on electric performance of cable, can also meet- 40 DEG C of cryogenic tensile rate measured values are not less than 50%, low temperature performance excellent).
Sheath uniform close is extruded in surface of insulating layer；The protective cover material of sheath require be using weather-proof, salt spray resistance, resistance to -40 DEG C low temperature, the Thermosetting mixtures of flame retardant type.Specifically, protective cover material can be the cold-resistant CPE mixture of thermosetting, the oxygen of sheath Index is not less than 30%
And -40 DEG C of cryogenic stretching performances are excellent, measured value is required more than -50% extensibility of national Specification.
This cable can enable the supporting wind power generating set of cable to use by material and the particular design of structure, Suitable for vertical run transmission line of electricity in MW level room temperature, high temperature, low temperature, High aititude, land tower barrel of wind generating set.
Above-mentioned cable encounters problem in actual production：Due to using new structure, using traditional processing technology, or It is empirically to wait to be modified on traditional processing technology all produce the cable for reaching theoretical performance, or even cannot gives birth to Product meets the cable of custom requirements.For this purpose, the present invention proposes a kind of new manufacture method, the cable is exclusively used in, it is specific as follows：
A kind of above-mentioned tower cable making method, step includes：
1) aluminium alloy is selected as conductive material；The stranded composition conductor of metal monofilament of many aluminum alloy materials：It is described Metal monofilament from-inner-to-outer is divided into multilamellar；Adjacent two metal monofilaments in every layer of metal monofilament are mutually brought into close contact；Adjacent two In layer metal monofilament, inside and outside layer metal monofilament is brought into close contact；The direction of lay of outermost metal monofilament be left-hand, adjacent two layers The direction of lay of metal monofilament is contrary；The twisting pitch of outermost metal monofilament is not more than 14 times of stranded rear external diameter；
2) using overlap isolation strip is wrapped in outside conductor around packet mode, wrapped width of putting up is not less than 5mm；
3) employing extrudes mode and Insulation Material is wrapped in outside isolation strip, and cools down：
From discharging direction is fed to, the fuselage warm area of rubber extruding machine is：One 67～72 DEG C of area, 78～83 DEG C of 2nd area, three areas 83 ～88 DEG C, 90～97 DEG C of 4th area；Wherein：One area is pan feeding section, and 2nd area and 3rd area are fluxing zone, and 4th area are homogenizing zone；
From discharging direction is fed to, the head warm area of rubber extruding machine is：One 83～88 DEG C of area, 83～88 DEG C of 2nd area, three areas 78 ～82 DEG C；
Melt pressure when insulating exruded and be maintained at 190～220bar, the degree of eccentricity is not more than 15%；
4) using continuous vulcanization mode in the outer uniform close extrude sheath of insulating barrier, and cool down：
Sheath matches somebody with somebody sheath die sleeve using gelatin extrusion machine and on head；The aperture of sheath die sleeve is more than conductor assembly outer diameter；
From discharging direction is fed to, each area's Temperature Distribution of fuselage of gelatin extrusion machine is：One 48～53 DEG C of area, two areas 53～58 DEG C, 58～62 DEG C of 3rd area, 63～68 DEG C of 4th area, 68～78 DEG C of 5th area；Wherein：One area is pan feeding section, and 2nd area and 3rd area are plasticizing Section, four He Wu areas of area are homogenizing zone；
From discharging direction is fed to, the head warm area of rubber extruding machine is：One 83～88 DEG C of area, 83～88 DEG C of 2nd area, three areas 78 ～82 DEG C；
Melt pressure during extrusion and be maintained at 200～250bar, the degree of eccentricity is not more than 15%.
Using cable obtained in this method, design requirement can be met, meanwhile, qualification rate reaches more than 98%.
Description of the drawings
Fig. 1 is the radial section schematic diagram of the present embodiment cable, in figure：Al-alloy metal monofilament 1, isolation strip 2, insulating barrier 3rd, sheath 4.
Specific embodiment
The technical program is further described below with reference to specific embodiment：
Such as Fig. 1, a kind of new tower cable：Conductor is constituted by many Al-alloy metal monofilament are stranded；Conductor outer wrapping There is isolation strip；Isolation strip outer wrapping insulating barrier；Insulating barrier outer wrapping sheath；The Al-alloy metal monofilament that the conductor is adopted it is straight Footpath scope 1.0mm～4.0mm.The main component of Al-alloy metal monofilament is Al, and the alloying element of addition (accounts for aluminium alloy gross mass Percentage ratio) for Si-0.03%～0.10%, Fe-0.30～0.50%%, Cu-0.15%～0.22%, Mg-0.01%～ 0.04%th, Zn-0.002%～0.010%, B-0.01%～0.03%.The stranded lay of Al-alloy metal monofilament is no more than twisted 14 times of conductor diameter after conjunction.The material of the sheath is the thermosetting mixing of weather-proof, salt spray resistance, resistance to -40 DEG C of low temperature, flame retardant type Thing；The material non-hygroscopic twining package tape of isolation strip, using overlapping around packet mode, wrapped width of putting up is not less than 5mm；Insulating barrier Insulation Material is high electrical, resistance to -40 DEG C of low temperature, soft type Thermosetting mixtures；It is to be wrapped in outside isolation strip using extruding mode；Shield The uniform close of set is extruded in surface of insulating layer.
Specifically, Insulation Material can be ethylene propylene rubber insulation material, and protective cover material is the cold-resistant CPE mixture of thermosetting, sheath Its oxygen index (OI) is not less than 30%.
The manufacture method of above-mentioned cable is described as follows：
A kind of above-mentioned tower cable making method, step includes：
1) aluminium alloy is selected as conductive material；The stranded composition conductor of metal monofilament of many aluminum alloy materials：It is described Metal monofilament from-inner-to-outer is divided into multilamellar；Adjacent two metal monofilaments in every layer of metal monofilament are mutually brought into close contact；Adjacent two In layer metal monofilament, inside and outside layer metal monofilament is brought into close contact；The direction of lay of outermost metal monofilament be left-hand, adjacent two layers The direction of lay of metal monofilament is contrary；The twisting pitch of outermost metal monofilament is not more than 14 times of stranded rear external diameter；
2) using overlap isolation strip is wrapped in outside conductor around packet mode, wrapped width of putting up is not less than 5mm；
3) employing extrudes mode and Insulation Material is wrapped in outside isolation strip, and cools down：
From discharging direction is fed to, the fuselage warm area of rubber extruding machine is：One 67～72 DEG C of area, 78～83 DEG C of 2nd area, three areas 83 ～88 DEG C, 90～97 DEG C of 4th area；Wherein：One area is pan feeding section, and 2nd area and 3rd area are fluxing zone, and 4th area are homogenizing zone；
From discharging direction is fed to, the head warm area of rubber extruding machine is：One 83～88 DEG C of area, 83～88 DEG C of 2nd area, three areas 78 ～82 DEG C；
Melt pressure when insulating exruded and be maintained at 190～220bar (most preferably 210bar), the degree of eccentricity is not more than 15%；
4) in the outer uniform close extrude sheath of insulating barrier, and cool down：
Sheath matches somebody with somebody sheath die sleeve using gelatin extrusion machine and on head；The aperture of sheath die sleeve is more than conductor assembly outer diameter；
From discharging direction is fed to, each area's Temperature Distribution of fuselage of gelatin extrusion machine is：One 48～53 DEG C of area, two areas 53～58 DEG C, 58～62 DEG C of 3rd area, 63～68 DEG C of 4th area, 68～78 DEG C of 5th area；Wherein：One area is pan feeding section, and 2nd area and 3rd area are plasticizing Section, four He Wu areas of area are homogenizing zone；
From discharging direction is fed to, the head warm area of rubber extruding machine is：One 83～88 DEG C of area, 83～88 DEG C of 2nd area, three areas 78 ～82 DEG C；
Melt pressure during extrusion and be maintained at 200～250bar (most preferably 230bar), the degree of eccentricity is not more than 15%.
Example 1：
1) aluminium alloy is selected as conductive material；The stranded composition conductor of metal monofilament of many aluminum alloy materials：It is described Metal monofilament from-inner-to-outer is divided into multilamellar；Adjacent two metal monofilaments in every layer of metal monofilament are mutually brought into close contact；Adjacent two In layer metal monofilament, inside and outside layer metal monofilament is brought into close contact；The direction of lay of outermost metal monofilament be left-hand, adjacent two layers The direction of lay of metal monofilament is contrary；The twisting pitch of outermost metal monofilament is not more than 14 times of stranded rear external diameter；
With conductor radial section product as 400mm2To illustrate, stranded equipment is frame winch, and conductor structure is stranded by 4 layers altogether Complete, using 1+6+12+18+23 structural arrangement, direction of lay outermost layer is left-hand, and adjacent layer is conversely, frame winch hauling speed For 25m/min, traction series is 30, and outermost layer twisting pitch is not more than 14 times of stranded rear external diameter.
2) using overlap isolation strip is wrapped in outside conductor around packet mode, wrapped width of putting up is not less than 5mm；
3) employing extrudes mode and Insulation Material is wrapped in outside isolation strip：Insulating exruded this spy's crosslinking using German Teller is produced Line, when extruding, the fuselage warm area of rubber extruding machine is：One 70 DEG C of area, 80 DEG C of 2nd area, 85 DEG C of 3rd area, 95 DEG C of 4th area；The head of rubber extruding machine Warm area is：One 85 DEG C of area, 85 DEG C of 2nd area, 80 DEG C of 3rd area；Melt pressure when insulating exruded and be maintained at 210bar；Screw speed is 25r/ Min, the current capacity of equipment is constant in 80A, and the degree of eccentricity is not more than 15%.
4) extrude sheath is adopted in the outer uniform close of insulating barrier；Sheathing adopts vapor crosslinking production line, with sheath mould During set, die sleeve aperture=(outside diameter of cable+0.5mm), and when extruding, each area's Temperature Distribution of fuselage of gelatin extrusion machine is：One area 50 DEG C, 55 DEG C of 2nd area, 60 DEG C of 3rd area, 65 DEG C of 4th area, 70 DEG C of 5th area；The head warm area of rubber extruding machine is：One 85 DEG C of area, 85 DEG C of 2nd area, Three 80 DEG C of areas；Melt pressure during extrusion and be maintained at 230bar；Sheath screw speed is 9.3r/min, the current capacity of equipment it is constant 200A, the degree of eccentricity is not more than 15%.
Example 2：
Step 3 is only that with the same part of example 1) in：The fuselage warm area of rubber extruding machine is：One 67 DEG C of area, 78 DEG C of 2nd area, 3rd area 83 DEG C, 90 DEG C of 4th area；The head warm area of rubber extruding machine is：One 83 DEG C of area, 83 DEG C of 2nd area, 78 DEG C of 3rd area；Melt pressure when insulating exruded to protect Hold in 220bar；Step 4) in each area's Temperature Distribution of fuselage of gelatin extrusion machine be：One 48 DEG C of area, 53 DEG C of 2nd area, 58 DEG C of 3rd area, 4th area 63 DEG C, 68 DEG C of 5th area；The head warm area of rubber extruding machine is：One 83 DEG C of area, 83 DEG C of 2nd area, 78 DEG C of 3rd area；Melt pressure during extrusion to be maintained at 250bar。
Example 3：
The step 3 is only that with the same part of example 1) in：The fuselage warm area of rubber extruding machine is：One 72 DEG C of area, 83 DEG C of 2nd area, Three 88 DEG C of areas, 97 DEG C of 4th area；The head warm area of rubber extruding machine is：One 88 DEG C of area, 88 DEG C of 2nd area, 82 DEG C of 3rd area；Melt when insulating exruded Pressure is maintained at 190bar；The step 4) in：The each area's Temperature Distribution of fuselage of gelatin extrusion machine is：One 53 DEG C of area, 58 DEG C of 2nd area, 3rd area 62 DEG C, 68 DEG C of 4th area, 78 DEG C of 5th area；The head warm area of rubber extruding machine is：One 88 DEG C of area, 88 DEG C of 2nd area, 82 DEG C of 3rd area；Melt during extrusion Pressure is maintained at 200bar.
Wherein, example 1 is obtained cable yields highest, reaches 99.7%, and example 2 reaches 99.3%, and example 3 reaches 99.1%.
As a result detect, include the characteristics of this cable：
1) it is light-duty
Compared with copper, the direct cost of aluminium alloy cable is that the cost of cable itself saves about 35% than copper cable to aluminium alloy, Due to aluminium alloy cable bending property more preferably and weight is lighter, can be in order to avoid crane span structure or reduction crane span structure consumption, installation cost can be saved About 20%～50%, and the external diameter of the aluminium alloy cable after substituting only increases by 10% or so compared to copper cable, thus not Influence whether that connection is installed.
2) good fire resistance
Jing third party's pattern detects that finished cable does not prolong combustion, GB/T18380.35 by the way that GB/T18380.12 is single respectively Bunchy fire retardancy test.
3) creep-resistant property is excellent
(main component of the Al-alloy metal monofilament of censorship product is Al, and the alloying element of addition (accounts for aluminium alloy gross mass Percentage ratio) be Si-0.05%, Fe-0.32%, Cu-0.18%, Mg-0.03%, Zn-0.002%, B-0.01%.Aluminium alloy Monofilament is 60, and conductor radial section product is 300mm2)。
Jing third party's pattern detects, completes system connectivity test and resistance to compression creep with copper-aluminium transition wire barrel and try Test.

Claims (7)

1. a kind of manufacture method of tower cable, is characterized in that
The structure of the tower cable is：Conductor is constituted by many Al-alloy metal monofilament are stranded；Conductor is wrapped with isolation Band；Isolation strip outer wrapping insulating barrier constitutes cable core；Insulating barrier outer wrapping sheath；The Al-alloy metal monofilament that the conductor is adopted Diameter range is 1.0mm～4.0mm；
Step includes：
1) aluminium alloy is selected as conductive material；The stranded composition conductor of metal monofilament of many aluminum alloy materials：The metal Monofilament from-inner-to-outer is divided into multilamellar；Adjacent two metal monofilaments in every layer of metal monofilament are mutually brought into close contact；Adjacent two layers gold In category monofilament, inside and outside layer metal monofilament is brought into close contact；The direction of lay of outermost metal monofilament be left-hand, adjacent two layers metal The direction of lay of monofilament is contrary；The twisting pitch of outermost metal monofilament is not more than 14 times of stranded rear external diameter；
2) using overlap isolation strip is wrapped in outside conductor around packet mode, wrapped width of putting up is not less than 5mm；
3) employing extrudes mode and Insulation Material is wrapped in outside isolation strip, and cools down：
From discharging direction is fed to, the fuselage warm area of rubber extruding machine is：One 67～72 DEG C of area, 78～83 DEG C of 2nd area, three areas 83～88 DEG C, 90～97 DEG C of 4th area；Wherein：One area is pan feeding section, and 2nd area and 3rd area are fluxing zone, and 4th area are homogenizing zone；
From discharging direction is fed to, the head warm area of rubber extruding machine is：One 83～88 DEG C of area, 83～88 DEG C of 2nd area, three areas 78～82 ℃；
Melt pressure when insulating exruded and be maintained at 190～220bar, the degree of eccentricity is not more than 15%；
4) using continuous vulcanization mode in the outer uniform close extrude sheath of insulating barrier, and cool down：
Sheath matches somebody with somebody sheath die sleeve using gelatin extrusion machine and on head；The aperture of sheath die sleeve is more than conductor assembly outer diameter；
From discharging direction is fed to, each area's Temperature Distribution of fuselage of gelatin extrusion machine is：One 48～53 DEG C of area, 53～58 DEG C of 2nd area, three 58～62 DEG C of area, 63～68 DEG C of 4th area, 68～78 DEG C of 5th area；Wherein：One area is pan feeding section, and 2nd area and 3rd area are fluxing zone, four He Wu areas of area are homogenizing zone；
From discharging direction is fed to, the head warm area of rubber extruding machine is：One 83～88 DEG C of area, 83～88 DEG C of 2nd area, three areas 78～82 ℃；
Melt pressure during extrusion and be maintained at 200～250bar, the degree of eccentricity is not more than 15%.
2. the manufacture method of tower cable according to claim 1, is characterized in that insulating barrier is closely extruded in isolation strip Surface；The Insulation Material of insulating barrier is required：High electrical, resistance to -40 DEG C of low temperature, soft type and thermosetting；
Sheath uniform close is extruded in surface of insulating layer；The protective cover material of sheath is required：Weather-proof, salt spray resistance, resistance to -40 DEG C of low temperature, Flame retardant type and thermosetting.
3. the manufacture method of tower cable according to claim 2, is characterized in that Insulation Material is ethylene propylene rubber insulation material； Protective cover material is the cold-resistant CPE mixture of thermosetting, and the oxygen index (OI) of sheath is not less than 30%.
4. the manufacture method of the tower cable according to claim 1,2 or 3, is characterized in that the step 3) in：Crowded rubber The fuselage warm area of machine is：One 70 DEG C of area, 80 DEG C of 2nd area, 85 DEG C of 3rd area, 95 DEG C of 4th area；The head warm area of rubber extruding machine is：One area 85 DEG C, 85 DEG C of 2nd area, 80 DEG C of 3rd area；Melt pressure when insulating exruded and be maintained at 210bar；
The step 4) in：The each area's Temperature Distribution of fuselage of gelatin extrusion machine is：One 50 DEG C of area, 55 DEG C of 2nd area, 60 DEG C of 3rd area, four areas 65 DEG C, 70 DEG C of 5th area；The head warm area of rubber extruding machine is：One 85 DEG C of area, 85 DEG C of 2nd area, 80 DEG C of 3rd area；Melt pressure during extrusion to be maintained at 230bar。
5. the manufacture method of the tower cable according to claim 1,2 or 3, is characterized in that the step 3) in：Crowded rubber The fuselage warm area of machine is：One 67 DEG C of area, 78 DEG C of 2nd area, 83 DEG C of 3rd area, 90 DEG C of 4th area；The head warm area of rubber extruding machine is：One area 83 DEG C, 83 DEG C of 2nd area, 78 DEG C of 3rd area；Melt pressure when insulating exruded and be maintained at 220bar；
The step 4) in each area's Temperature Distribution of fuselage of gelatin extrusion machine be：One 48 DEG C of area, 53 DEG C of 2nd area, 58 DEG C of 3rd area, four areas 63 DEG C, 68 DEG C of 5th area；The head warm area of rubber extruding machine is：One 83 DEG C of area, 83 DEG C of 2nd area, 78 DEG C of 3rd area；Melt pressure during extrusion to be maintained at 250bar。
6. the manufacture method of the tower cable according to claim 1,2 or 3, is characterized in that the step 3) in：Crowded rubber The fuselage warm area of machine is：One 72 DEG C of area, 83 DEG C of 2nd area, 88 DEG C of 3rd area, 97 DEG C of 4th area；The head warm area of rubber extruding machine is：One area 88 DEG C, 88 DEG C of 2nd area, 82 DEG C of 3rd area；Melt pressure when insulating exruded and be maintained at 190bar；
The step 4) in：The each area's Temperature Distribution of fuselage of gelatin extrusion machine is：One 53 DEG C of area, 58 DEG C of 2nd area, 62 DEG C of 3rd area, four areas 68 DEG C, 78 DEG C of 5th area；The head warm area of rubber extruding machine is：One 88 DEG C of area, 88 DEG C of 2nd area, 82 DEG C of 3rd area；Melt pressure during extrusion to be maintained at 200bar。
7. the manufacture method of the tower cable according to claim 1,2 or 3, is characterized in that the step 4) in, die sleeve Aperture=(conductor assembly outer diameter+0.5mm).
CN201510881316.0A 2015-12-03 2015-12-03 Cable for tower and manufacturing method of cable Active CN105355260B (en)

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CN106373646B (en) * 2016-08-26 2018-02-16 江苏上上电缆集团有限公司 A kind of wear-resisting anti-low temperature resistant flexible cable of towing and preparation method thereof
CN110718336A (en) * 2019-10-08 2020-01-21 江苏上上电缆集团有限公司 Locomotive cable manufacturing method and cable

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