CN101783213B - Method for manufacturing small-pitch aluminum stranded wire - Google Patents
Method for manufacturing small-pitch aluminum stranded wire Download PDFInfo
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Abstract
The invention discloses a method for manufacturing a small-pitch aluminum stranded wire. A lay plate with a proper size and a distance between the wire distributing plate and an inlet of a closing die are selected on a fork wire-stranding machine set; an angle between an aluminum wire which is led out of a wire hole on the external periphery of the lay plate and then enters the inlet of the closing die and a core wire which is led out of an axle tube and then enters the inlet of the closing die is between 45 and 63 degrees when the aluminum stranded wire on the outermost layer is stranded and is between 35 and 50 degrees when the aluminum stranded wires on the other layers are stranded; and the obtained lay ratio value of the outermost layer is between 3.5 and 4.5 and the lay ratio value of the other layers is between 6.5 and 8.5. The aluminum wire which is subjected to heat treatment is taken as a raw material; the ratio of a pitch of the cylindrical helix-shaped aluminum wire in each layer of the aluminum stranded wire to the diameter of a cylindrical surface on which the cylindrical helix-shaped aluminum wire on the layer is arranged is relatively small; the aluminum stranded wire is easily bent; the allowable bending radius is relatively small; and after being bent into small bends, the aluminum stranded wire does not bridle wire, deform or get out of a sleeve, and has a smooth, round and flat surface and a stable structure and is suitable for serving as the aluminum stranded wire for connecting electric contacts of power distribution equipment in a high-voltage substation and a high-voltage converter station.
Description
Technical field
The present invention relates to a kind of method with crosswise wire strander manufacturing aluminium stranded conductor, particularly a kind of with the doubling angle in the crosswise wire strander manufacturing aluminium stranded conductor method.
Background technology
Aluminium stranded conductor is many aluminum steels stranded cables that form on crosswise wire strander, carry the aluminium stranded conductor cross section of high-tension electricity bigger in the high-voltage fence, carrying the aluminium stranded conductor of high-tension electricity is the many stranded cylindrical aluminium twisted wires that form of aluminum steel branch multilayer, there is heart yearn at the axis place of aluminium stranded conductor, heart yearn can be a solid wire, heart yearn also can be by 2,3,4,5 or 6 stranded twisted wires that form of line, heart yearn can be an aluminum steel, it also can be steel wire, the outer layer-stranding of heart yearn has aluminum steel, in the aluminium stranded conductor except that the solid wire heart yearn each root aluminum steel all be that cylindrical screw is linear, the linear aluminum steel of every layer of cylindrical screw of aluminium stranded conductor is on the same face of cylinder, the i.e. pitch of this layer aluminium stranded conductor of the pitch of the linear aluminum steel of cylindrical screw in every layer of the aluminium stranded conductor.The aluminium stranded conductor of carrying high-tension electricity to use in the high-voltage fence is to use between the high tension electric tower that is erected at the high-pressure delivery electrical network under the state that stretches, and requires the more flexible distortion of rigidity of aluminium stranded conductor.The equipment of making above-mentioned aluminium stranded conductor is the crosswise wire strander group, the crosswise wire strander group is held coil holder, there is paying out machine at the rear portion of holding coil holder, the front portion of holding coil holder has doubling mould, hauling machine and admission machine successively, hauling machine is connected with motor by the manual gear speed changer, hold coil holder forward and backward axle bed is arranged, on the forward and backward axle bed central siphon is arranged, the side of central siphon is evenly equipped with the drum folder, the central siphon that holds coil holder is connected with motor by the manual gear speed changer, the front end of central siphon is with the disc distributor plate, the along the circumferential direction uniform wired hole of the excircle of distributor plate.Before making aluminium stranded conductor, get the aluminium single line dish of an aluminum core line dish and some, earlier the aluminum core line dish is placed on the paying out machine, the aluminium single line dish of some is placed on the drum folder that holds coil holder, aluminum steel on the aluminium single line dish can be the aluminum steel after the cold-drawn, also can be heat treated again aluminum steel after the cold-drawn, soft, the good toughness of heat treated again aluminum steel after the cold-drawn.Central siphon, doubling mould, the hauling machine of heart yearn through holding coil holder of drawing from the aluminum core line dish enters admission machine, the many aluminum steels that the aluminium single line dish of some is drawn pass the uniform line hole of distributor plate excircle respectively, enter admission machine through doubling mould, hauling machine successively after remerging.When making aluminium stranded conductor, the central siphon that holds coil holder with driven by motor rotates, aluminum steel after the merging is the stranded heart yearn outside that wraps in the doubling mould, becomes the individual layer aluminium stranded conductor, enters admission machine with driven by motor hauling machine pulling individual layer aluminium stranded conductor the individual layer aluminium stranded conductor is wrapped on the drum.Again individual layer aluminium stranded conductor dish is placed on the paying out machine, with the individual layer aluminium stranded conductor is that the manufacture process that heart yearn repeats above-mentioned individual layer aluminium stranded conductor is made the aluminium stranded conductor that increases one deck again, repeat the above-mentioned manufacture process that increases the aluminium stranded conductor of one deck more successively, can produce the multilayer aluminium stranded conductor, having on the crosswise wire strander that holds coil holder of a plurality of polyphones, heart yearn successively can stranded successively multilayer aluminium stranded conductor behind the coil holder by holding of polyphone.In the prior art, in the above-mentioned adjacent two layers aluminium stranded conductor that is erected at the multilayer aluminium stranded conductor that uses between the high tension electric tower of high-pressure delivery electrical network, the electric wire radical manys the six roots of sensation than electric wire radical in the unlined aluminium twisted wire in the outer aluminium stranded conductor, when making aluminium stranded conductor with crosswise wire strander, the aluminum steel and the angle between the heart yearn that enter doubling mould inlet after drawing from the line hole of distributor plate excircle are less, normally 17 °～30 °, the aluminium stranded conductor of Zhi Zaoing is less because of the aluminum steel and the angle between the heart yearn that enter doubling mould inlet after drawing from the line hole of distributor plate excircle in this way, so the aluminium stranded conductor pitch that produces is bigger, the pitch of the linear aluminum steel of cylindrical screw in every layer of the aluminium stranded conductor is bigger with the ratio-lay ratio of the face of cylinder, this layer cylindrical screw linear aluminum steel place diameter, the aluminium stranded conductor rigidity that this pitch is bigger is bigger, be suitable between the high tension electric tower that is erected at the high-pressure delivery electrical network under the state that stretches as carrying high-tension electricity to use, in high voltage substation and high-voltage convertor station, need between the gold utensil of the electric terminal of high-tension distribution equipment to link to each other with the aluminium stranded conductor of same cross-sectional, distance between the electric terminal of high-tension distribution equipment is less, require stube cable crooked easily, the permission bending radius is less, bend to little curved after not wire jumper distortion, do not go out cover, the smooth surface rounding, Stability Analysis of Structures.The aluminium stranded conductor made from said method is bigger because of lay ratio, and the aluminium stranded conductor rigidity is bigger, and is not flexible, can not be as the aluminium stranded conductor that connects usefulness between the electric terminal of high voltage substation and high-voltage convertor station mesohigh controller switching equipment.
The method of holding TR between coil holder and its motor and the TR between hauling machine and its motor by manual adjustments can be regulated the lay ratio of aluminium stranded conductor in small range, owing to the aluminum steel and the angle between the heart yearn that enter doubling mould inlet after drawing from the line hole of distributor plate excircle are less, normally 17 °～30 °, the pitch diameter ratio that produces aluminium stranded conductor is between 10～17, can not produce lay ratio less aluminium stranded conductor, can not reach the requirement that connects the aluminium stranded conductor of usefulness between the electric terminal of high voltage substation and high-voltage convertor station mesohigh controller switching equipment.
Summary of the invention
The objective of the invention is to propose a kind of easy bending, allow bending radius less in order to overcome above-mentioned deficiency, bend to little curved after not wire jumper distortion, do not go out cover, smooth surface rounding, the manufacture method of constitutionally stable small-pitch aluminum stranded wire.
The present invention is achieved using the following method.
The manufacture method of small-pitch aluminum stranded wire has the following steps: (1) learn from else's experience aluminum core line dish and aluminium single line dish after the heat treatment, the aluminum core line dish is placed on the paying out machine of crosswise wire strander group, and aluminium single line dish is placed on holding on the coil holder of crosswise wire strander group,
(2) heart yearn is drawn from the aluminum core line dish on the paying out machine, central siphon through holding coil holder, doubling mould, hauling machine enter admission machine successively, aluminum steel is drawn from the aluminium single line dish that holds on the coil holder, pass the uniform line hole of distributor plate excircle respectively, enter the doubling mould and heart yearn merges from the inlet of doubling mould in the doubling mould, enter admission machine through hauling machine again
(3) central siphon that holds coil holder with driven by motor rotates, aluminum steel after the merging wraps in the heart yearn outside in the doubling mould, become the individual layer aluminium stranded conductor, enters admission machine with driven by motor hauling machine pulling individual layer aluminium stranded conductor the individual layer aluminium stranded conductor is wrapped on the drum, obtain individual layer aluminium stranded conductor dish
(4) the individual layer aluminium stranded conductor dish that previous step is obtained suddenly is placed on the paying out machine, more than the individual layer aluminium stranded conductor that obtains of a step be that the manufacture process that heart yearn repeats above-mentioned individual layer aluminium stranded conductor is produced the aluminium stranded conductor that increases one deck again, increased the aluminium stranded conductor dish of one deck again,
(5) repeat the above-mentioned manufacture process that increases the layer of aluminum twisted wire again,, produce the multilayer aluminium stranded conductor until outermost layer,
In the manufacturing process of above-mentioned aluminium stranded conductor, when stranded outermost layer aluminium stranded conductor, entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 45 °～63 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon, when stranded other layer aluminium stranded conductor, entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 35 °～50 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon.
When having the aluminium stranded conductor of multilayer aluminum steel with the crosswise wire strander manufacturing, the aluminium stranded conductor lay ratio difference of different layers can be regulated the lay ratio of aluminium stranded conductor in small range with the method for regulating the TR hold between coil holder and its motor and the TR between hauling machine and its motor.
With the line hole place diameter of a circle that increases the distributor plate excircle with the method for the distance between reducing distributor plate with the doubling mould and entering the mouth, when stranded outermost layer aluminium stranded conductor, allowing and entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 45 °～63 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon, when stranded other layer aluminium stranded conductor, allowing and entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 35 °～50 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon, the pitch diameter ratio that produces the linear aluminum steel of outermost layer cylindrical screw of aluminium stranded conductor is 3.5～4.5, and the pitch diameter ratio of the linear aluminum steel of other layer cylindrical screw is 6.5～8.5.
The present invention after with heat treatment aluminum steel be raw material, when stranded outermost layer aluminium stranded conductor, entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 45 °～63 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon, when stranded other layer aluminium stranded conductor, entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 35 °～50 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon, the aluminium stranded conductor product lay ratio that manufactures is less, the pitch diameter ratio of the linear aluminum steel of outermost layer cylindrical screw is 3.5～4.5, the pitch diameter ratio of the linear aluminum steel of other layer cylindrical screw is 6.5～8.5, the aluminium stranded conductor that manufactures is crooked easily, the permission bending radius is less, bend to little curved after not wire jumper distortion, do not go out cover, the smooth surface rounding, Stability Analysis of Structures is suitable for as the aluminium stranded conductor that connects usefulness between the electric terminal of high voltage substation and high-voltage convertor station mesohigh controller switching equipment.
Below in conjunction with embodiment, the present invention is further described.
Embodiment
In order to make above-mentioned small-pitch aluminum stranded wire, except the line hole place diameter of a circle that will increase the distributor plate excircle and reduce distributor plate and doubling mould inlet between distance regulate the above-mentioned angle, also will be according to the line footpath of the aluminum steel that adopts and the small-pitch aluminum stranded wire conductive section that will make different, design the stranded number of plies of heart yearn radical, the aluminum steel of aluminium stranded conductor and every layer radical.
Embodiment 1
The manufacture method of small-pitch aluminum stranded wire has the following steps:
1. getting the aluminium single line is the aluminum core line dish of heart yearn, the aluminum core line dish is placed on the paying out machine of crosswise wire strander group, get six aluminium single line dishes and be placed on holding on the coil holder of crosswise wire strander group,
2. heart yearn is drawn from the aluminum core line dish on the paying out machine, central siphon through holding coil holder, doubling mould, hauling machine enter admission machine successively, aluminum steel is drawn from the aluminium single line dish that holds on the coil holder, pass the uniform line hole of distributor plate excircle respectively, enter the doubling mould and heart yearn merges from the inlet of doubling mould in the doubling mould, enter admission machine through hauling machine again
Select the distance between suitable distributor plate of size and distributor plate and the doubling mould inlet, allow the aluminum steel that enters doubling mould inlet after drawing from the line hole of distributor plate excircle and to draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon be 35 °～50 °,
3. hold the central siphon rotation of coil holder with driven by motor, aluminum steel after the merging is the stranded heart yearn outside that wraps in the doubling mould, becomes the individual layer aluminium stranded conductor, enters admission machine with driven by motor hauling machine pulling individual layer aluminium stranded conductor the individual layer aluminium stranded conductor is wrapped on the drum, obtain individual layer aluminium stranded conductor dish
4. individual layer aluminium stranded conductor dish being placed on the paying out machine, is heart yearn with the individual layer aluminium stranded conductor, gets 12 aluminium single line dishes and is placed on and holds on the coil holder, repeats the manufacture process of above-mentioned individual layer aluminium stranded conductor and produces double-deck aluminium stranded conductor, obtains double-deck aluminium stranded conductor dish,
5. double-deck aluminium stranded conductor dish being placed on the paying out machine, is heart yearn with double-deck aluminium stranded conductor, gets 17 aluminium single line dishes and is placed on and holds on the coil holder, repeats the manufacture process of above-mentioned individual layer aluminium stranded conductor and produces three layers of aluminium stranded conductor, obtains three layers of aluminium stranded conductor dish,
6. three layers of aluminium stranded conductor dish being placed on the paying out machine, is heart yearn with three layers of aluminium stranded conductor, gets 21 aluminium single line dishes and is placed on and holds on the coil holder, repeats the manufacture process of above-mentioned individual layer aluminium stranded conductor and produces four layers of aluminium stranded conductor, obtains four layers of aluminium stranded conductor dish,
7. four layers of aluminium stranded conductor dish being placed on the paying out machine, is heart yearn with four layers of aluminium stranded conductor, gets 29 dish aluminium and is placed on and holds on the coil holder, repeats the manufacture process of above-mentioned individual layer aluminium stranded conductor and produces five layers of aluminium stranded conductor, obtains five layers of aluminium stranded conductor dish,
8. five layers of aluminium stranded conductor dish are placed on the paying out machine, with four layers of aluminium stranded conductor is heart yearn, getting 30 aluminium single line dishes is placed on and holds on the coil holder, select the distance between suitable distributor plate of size and distributor plate and the doubling mould inlet, allowing and entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 45 °～63 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon, repeat the manufacture process of above-mentioned individual layer aluminium stranded conductor, produce six layers of aluminium stranded conductor.
In the step 1 that the foregoing description is 1 li, on paying out machine, place the aluminium single line dish of single aluminum steel, four steps were repeated in step 4 back, step 1, in four steps that repeat step 4 and step 4 back, place 6 on the coil holder respectively holding, 12,18,24,29 and 30 aluminium single line dishes, when stranded outermost layer aluminium stranded conductor, entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 45 °～63 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon, when stranded other layer aluminium stranded conductor, entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 35 °～50 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon.
The small-pitch aluminum stranded wire heart yearn that embodiment 1 produces is one, the heart yearn of small-pitch aluminum stranded wire has six layers outward, small-pitch aluminum stranded wire is respectively 6,12,18,24,29 and 30 from internal layer to aluminum steel radical outer, each layer, and the conductive section of aluminium stranded conductor is 900 square millimeters.
Embodiment 2
The manufacture method of small-pitch aluminum stranded wire has the following steps:
Two steps were repeated in step 4 back, in two steps that repeat step 4 back, placed 17 and 21 aluminium single line dishes on the coil holder respectively holding, and other is identical with embodiment 1.
The small-pitch aluminum stranded wire heart yearn that embodiment 2 manufactures is one, and the heart yearn of small-pitch aluminum stranded wire has four layers outward, and small-pitch aluminum stranded wire is respectively 6,12,17 and 21 from internal layer to aluminum steel radical outer, each layer, and the conductive section of aluminium stranded conductor is 400 square millimeters.
Embodiment 3
The manufacture method of small-pitch aluminum stranded wire has the following steps:
In the step 1, the twisted wire of getting three aluminum steels is the aluminum core line dish of heart yearn, and two steps were repeated in step 4 back,
In two steps that repeat step 1, step 4 and step 4 back, place 9,15,20 and 22 aluminium single line dishes on the coil holder respectively holding, other is identical with embodiment 1.
The small-pitch aluminum stranded wire heart yearn that embodiment 3 manufactures is three, and the heart yearn of small-pitch aluminum stranded wire has four layers outward, and small-pitch aluminum stranded wire is respectively 9,15,20,22 from internal layer to aluminum steel radical outer, each layer, and the conductive section of aluminium stranded conductor is 500 square millimeters.
Embodiment 4
The manufacture method of small-pitch aluminum stranded wire has the following steps:
Three steps were repeated in step 4 back, in three steps that repeat step 4 back, placed 18,23 and 26 aluminium single line dishes on the coil holder respectively holding, and other is identical with embodiment 1.
The small-pitch aluminum stranded wire heart yearn that embodiment 4 manufactures is one, the heart yearn of small-pitch aluminum stranded wire has five layers outward, small-pitch aluminum stranded wire is respectively 6,12,18,23 and 26 from internal layer to aluminum steel radical outer, each layer, and the conductive section of aluminium stranded conductor is 630 square millimeters.
Embodiment 5
In the step 1, the twisted wire of getting four aluminum steels is the aluminum core line dish of heart yearn, and three steps were repeated in step 4 back, in three steps that repeat step 1, step 4 and step 4 back, place 10,16,22,26 and 28 aluminium single line dishes on the coil holder respectively holding, other is identical with embodiment 1.
The small-pitch aluminum stranded wire heart yearn that embodiment 5 manufactures is four, the heart yearn of small-pitch aluminum stranded wire has five layers outward, small-pitch aluminum stranded wire is respectively 10,16,22,26 and 28 from internal layer to aluminum steel radical outer, each layer, and the conductive section of aluminium stranded conductor is 800 square millimeters.
Embodiment 6
Four steps were repeated in step 4 back, in four steps that repeat step 4 back, placed 22,27,32 and 33 aluminium single line dishes on the coil holder respectively holding, and other is identical with embodiment 5.
The small-pitch aluminum stranded wire heart yearn that embodiment 6 manufactures is four, the heart yearn of small-pitch aluminum stranded wire has six layers outward, small-pitch aluminum stranded wire is respectively 10,16,22,27,32 and 33 from internal layer to aluminum steel radical outer, each layer, and the conductive section of aluminium stranded conductor is 1120 square millimeters.
The line footpath of above-mentioned aluminum steel can be the aluminum steel of 3.09 ± 0.01d millimeter.
Claims (8)
1. the manufacture method of a small-pitch aluminum stranded wire has the following steps:
(1) learn from else's experience aluminum core line dish and aluminium single line dish after the heat treatment are placed on the aluminum core line dish on the paying out machine of crosswise wire strander group, and aluminium single line dish is placed on holding on the coil holder of crosswise wire strander group,
(2) heart yearn is drawn from the aluminum core line dish on the paying out machine, central siphon through holding coil holder, doubling mould, hauling machine enter admission machine successively, aluminum steel is drawn from the aluminium single line dish that holds on the coil holder, pass the uniform line hole of distributor plate excircle respectively, enter the doubling mould and heart yearn merges from the inlet of doubling mould in the doubling mould, enter admission machine through hauling machine again
(3) central siphon that holds coil holder with driven by motor rotates, aluminum steel after the merging is the stranded heart yearn outside that wraps in the doubling mould, becomes the individual layer aluminium stranded conductor, enters admission machine with driven by motor hauling machine pulling individual layer aluminium stranded conductor the individual layer aluminium stranded conductor is wrapped on the drum, obtain individual layer aluminium stranded conductor dish
(4) the individual layer aluminium stranded conductor dish that previous step is obtained suddenly is placed on the paying out machine, more than the individual layer aluminium stranded conductor that obtains of a step be that the manufacture process that heart yearn repeats above-mentioned individual layer aluminium stranded conductor is produced the aluminium stranded conductor that increases one deck again, increased the aluminium stranded conductor dish of one deck again,
(5) repeat the above-mentioned manufacture process that increases the layer of aluminum twisted wire again, produce the multilayer aluminium stranded conductor,
It is characterized in that: in the manufacturing process of above-mentioned aluminium stranded conductor, when stranded outermost layer aluminium stranded conductor, entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 45 °～63 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon, when stranded other layer aluminium stranded conductor, entering the aluminum steel of doubling mould inlet after drawing from the line hole of distributor plate excircle is 35 °～50 ° with draw the angle that enters between the heart yearn that the doubling mould enters the mouth from central siphon.
2. press the manufacture method of the described small-pitch aluminum stranded wire of claim 1, it is characterized in that: in the described step (1), on paying out machine, place the aluminium single line dish of single aluminum steel, again step (4) is repeated four times after the step (4), in step (1), step (4) and four steps (4) that repeat, place 6,12,18,24,29 and 30 aluminium single line dishes on the coil holder respectively holding.
3. by the manufacture method of the described small-pitch aluminum stranded wire of claim 1, it is characterized in that: again step (4) is repeated twice after the described step (4), in twice step (4) of repetition, place 17 and 21 aluminium single line dishes on the coil holder respectively holding.
4. press the manufacture method of the described small-pitch aluminum stranded wire of claim 1, it is characterized in that: in the described step (1), the twisted wire of getting three aluminum steels is the aluminum core line dish of heart yearn, again step (4) is repeated twice after the step (4), in twice step (4) that repeat step (1), step (4) and back, place 9,15,20 and 22 aluminium single line dishes on the coil holder respectively holding.
5. by the manufacture method of the described small-pitch aluminum stranded wire of claim 1, it is characterized in that: again with step (4) triplicate, in three steps (4) of repetition, place 18,23 and 26 aluminium single line dishes on the coil holder respectively holding after the described step (4).
6. press the manufacture method of the described small-pitch aluminum stranded wire of claim 1, it is characterized in that: in the described step (1), the twisted wire of getting four aluminum steels is the aluminum core line dish of heart yearn, after the step (4) again with step (4) triplicate, in three steps (4) of step (1), step (4) and repetition, place 10,16,22,26 and 28 aluminium single line dishes on the coil holder respectively holding
7. press the manufacture method of the described small-pitch aluminum stranded wire of claim 1, it is characterized in that: again step (4) is repeated four times after the described step (4), in four steps (4) that repeat, place 22,27,32 and 33 aluminium single line dishes on the coil holder respectively holding.
8. by the manufacture method of claim 1,2,3,4,5,6 or 7 described small-pitch aluminum stranded wires, it is characterized in that: the line of described aluminum steel directly is 3.09 ± 0.01d millimeter.
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| CN102354578B (en) * | 2011-09-20 | 2013-08-28 | 天津百利阳光环保设备有限公司 | Auxiliary tray feeding equipment for crosswise wire strander |
| CN103578653A (en) * | 2013-10-28 | 2014-02-12 | 黄山市诚意金属有限公司 | Production method for long span aluminum clad steel stranded wires |
| CN105070402A (en) * | 2015-08-13 | 2015-11-18 | 无锡统力超导科技有限公司 | Superconducting flat twisted cable and manufacturing technology thereof |
| JP6742333B2 (en) | 2015-11-17 | 2020-08-19 | 古河電気工業株式会社 | Twisted-wire conductor and method for manufacturing stranded-wire conductor |
| CN105931702A (en) * | 2016-06-27 | 2016-09-07 | 平高集团有限公司 | Fine-pitch flexible aluminum stranded wire and manufacturing method thereof |
| CN112509748A (en) * | 2020-11-19 | 2021-03-16 | 杭州电缆股份有限公司 | Production method for cabling of large-section split conductors |
| CN114496389B (en) * | 2022-02-25 | 2024-01-05 | 江苏南瑞银龙电缆有限公司 | High-conductivity aluminum stranded wire for extra-high voltage transmission and preparation method thereof |
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