CN108179259B - Steel core prestress treatment system and prestress treatment method for steel core aluminum stranded wire - Google Patents
Steel core prestress treatment system and prestress treatment method for steel core aluminum stranded wire Download PDFInfo
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- CN108179259B CN108179259B CN201711383796.3A CN201711383796A CN108179259B CN 108179259 B CN108179259 B CN 108179259B CN 201711383796 A CN201711383796 A CN 201711383796A CN 108179259 B CN108179259 B CN 108179259B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 202
- 239000010959 steel Substances 0.000 title claims abstract description 202
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000004140 cleaning Methods 0.000 claims description 25
- 238000007664 blowing Methods 0.000 claims description 18
- 230000006698 induction Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention provides a steel core prestress treatment system and a prestress treatment method for a steel core aluminum stranded wire, wherein a wire inlet tension device, a heating device and a wire outlet tension device are sequentially arranged between a wire pay-off rack and a wire take-up rack; the wire inlet tension device comprises a wire inlet tension wheel and a wire inlet wheel driving piece for driving the wire inlet tension wheel to rotate; the wire outlet tension device comprises a wire outlet tension wheel and a wire outlet wheel driving piece for driving the wire outlet tension wheel to rotate; the rotation speed of the incoming wire tension wheel is smaller than that of the outgoing wire tension wheel; the steel core of the steel-cored aluminum stranded wire which is paid out from the wire pay-off rack is wound on the wire-in tension wheel, and after passing through the heating device, the steel core is wound on the wire-out tension wheel. The invention can solve the problem that the deformation and creep generated by the traditional steel-cored aluminum strand under the action of temperature and stress change the stress characteristics of the steel-cored aluminum strand, thereby affecting the operation safety of the steel-cored aluminum strand.
Description
Technical Field
The invention relates to the technical field of overhead transmission lines, in particular to a steel core prestress treatment system and a prestress treatment method for a steel core aluminum stranded wire.
Background
The steel-cored aluminum strand is one of the most used wires in overhead transmission lines, and accounts for more than 80% of the total wire types. As a composite structural member, the inner layer steel strand core mainly bears the action of force, and the outer layer aluminum wire mainly serves as a conductor for electric energy transmission. In operation, the performance of the wire depends on the structural matching characteristics of the steel core, the aluminum wire and the two. The steel core manufactured by the traditional method and the aluminum wire of the outer layer are twisted into the steel core aluminum stranded wire, and the performance of the steel core aluminum stranded wire is that the steel core and the aluminum wire are combined. For steel-cored aluminum stranded wires, the steel core is mainly used as a bearing piece to exert a bearing function, and the aluminum wire is mainly used for conducting. The mechanical properties of the steel core thus largely determine the mechanical properties of the steel-cored aluminum strand.
In practical application, due to the temperature change of the steel-cored aluminum strand and the action of external loads such as wind, ice and snow, the steel-cored aluminum strand can generate certain deformation, so that the sag of the steel-cored aluminum strand is increased, and great potential safety hazards are brought to the operation of the wire. How to improve the mechanical properties of the steel core in the steel-cored aluminum strand is a problem to be solved by the person skilled in the art.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is to provide a steel core prestress treatment system and a prestress treatment method for a steel core aluminum stranded wire.
In order to solve the technical problems, the invention provides a steel core prestress treatment system of a steel core aluminum stranded wire, which comprises: the wire pay-off rack and the wire take-up rack pay out the steel core of the steel-cored aluminum strand, and the wire pay-off rack receives the steel core of the steel-cored aluminum strand; an incoming line tension device, a heating device and an outgoing line tension device are sequentially arranged between the wire pay-off rack and the wire take-up rack; the wire inlet tension device comprises a wire inlet tension wheel and a wire inlet wheel driving piece for driving the wire inlet tension wheel to rotate; the wire outlet tension device comprises a wire outlet tension wheel and a wire outlet wheel driving piece for driving the wire outlet tension wheel to rotate; the rotation speed of the incoming line tension wheel is smaller than that of the outgoing line tension wheel; the steel core of the steel-cored aluminum strand paid out from the wire pay-off rack is wound on the wire-in tension wheel, penetrates into the heating device, and is wound on the wire-out tension wheel.
Preferably, the heating device is an intermediate frequency induction heating furnace.
Preferably, the steel core prestress treatment system of the steel core aluminum stranded wire further comprises: a blowing cleaning device; the blowing cleaning device is arranged between the wire outlet tension device and the wire collecting frame and is positioned above the steel core of the steel-cored aluminum strand.
The invention also relates to a steel core prestress treatment method of the steel core aluminum stranded wire, which adopts the steel core prestress treatment system of the steel core aluminum stranded wire and comprises the following steps: after a steel core of a steel-cored aluminum strand is paid out from a wire pay-off frame, the steel core is sequentially wound on a wire inlet tension pulley of a wire inlet tension device and a wire outlet tension pulley of a wire outlet tension device, the wire inlet tension device and the wire outlet tension device apply tension to the steel core, the rotation speed of the wire inlet tension pulley is smaller than that of the wire outlet tension pulley, and the applied tension of the steel core output from the wire outlet tension device is 30% -60% of the maximum breaking force of the steel core; after the steel core is output from the wire inlet tension device and before the steel core is input into the wire outlet tension device, the steel core is heated by a heating device, and the heating temperature is 360-400 ℃; and the wire take-up frame carries out take-up operation on the steel core output from the wire outlet tension device.
Preferably, the steel core prestress treatment method is used for treating the steel core at a speed of 3-5m/min.
Further, the speed of the wire outlet tension device for treating the steel core is 3-5m/min.
Further, the speed of the heating device for treating the steel core is 3-5m/min.
Preferably, the steel core prestress treatment system further comprises: a blowing cleaning device; the blowing cleaning device is arranged between the wire outlet tension device and the wire collecting frame and is positioned above the steel core of the steel-cored aluminum strand; and the blowing cleaning device blows the steel core output by the wire inlet tension device.
Further, the blowing cleaning device blows high-pressure gas to the surface of the steel core, and the pressure of the blown high-pressure gas is 5Mpa-7Mpa.
Further, the speed of the steel core treated by the air blowing cleaning device is 3-5m/min.
As described above, the steel core prestress treatment system and the prestress treatment method for the steel core aluminum stranded wire have the following beneficial effects:
the wire inlet tension device and the wire outlet tension device form a tension applying component for applying prestress to the steel core; the steel core is subjected to prestress treatment, so that the steel core obtains a certain compressive stress, and after the external aluminum wires are stranded, the mechanical properties of the steel core aluminum stranded wires in construction and operation can be changed; the initial elongation of the steel core in the subsequent construction is eliminated through the steel core prestress treatment, and the initial elongation of the whole steel core aluminum stranded wire is further reduced through the cooperation of the steel core prestress treatment and the aluminum wire, and the stress distribution of the steel core aluminum stranded wire can be changed, so that the temperature of the migration point of the steel core aluminum stranded wire is reduced; the creep deformation of the steel core is eliminated, so that the creep deformation of the whole steel core aluminum stranded wire in the service life cycle is reduced, and the problem of sag increase after operation is solved; the heating device is arranged between the wire inlet tension device and the wire outlet tension device, so that the steel core is heated in the steel core prestress treatment process, the stress distribution of the steel core can be improved, the stress distribution acts with the stress obtained by the steel core, the strain deformation of the steel core is accelerated, and the effect of prestress treatment of the steel core is achieved; the invention can solve the problem that the deformation and creep generated by the traditional steel-cored aluminum strand under the action of temperature and stress change the stress characteristics of the steel-cored aluminum strand, thereby affecting the operation safety of the steel-cored aluminum strand.
Drawings
Fig. 1 is a schematic structural diagram of a steel core prestress treatment system for a steel core aluminum stranded wire according to the embodiment.
Fig. 2 is a schematic diagram showing stress-strain relationship of the untreated steel core, the carbon fiber composite core, and the pre-stress treated steel core of the present embodiment.
Description of the reference numerals
10. Steel core
100. Wire pay-off rack
200. Wire collecting rack
300. Inlet wire tension device
310. Inlet wire tension pulley
400. Heating device
500. Outgoing line tension device
510. Outgoing line tension wheel
600. Blowing cleaning device
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
The steel core 10 prestress treatment system of the steel-cored aluminum strand of the embodiment comprises: a wire pay-off rack 100 and a wire take-up rack 200, wherein the wire pay-off rack 100 pays out the steel core 10 of the steel-cored aluminum stranded wire, and the wire pay-off rack 100 receives the steel core 10 of the steel-cored aluminum stranded wire;
a wire-in tension device 300, a heating device 400 and a wire-out tension device 500 are sequentially arranged between the wire pay-off rack 100 and the wire take-up rack 200;
the wire tension device 300 comprises a wire tension wheel 310 and a wire wheel driving piece for driving the wire tension wheel 310 to rotate;
the wire outlet tension device 500 comprises a wire outlet tension wheel 510 and a wire outlet wheel driving piece for driving the wire outlet tension wheel 510 to rotate;
the rotational speed of the incoming tension pulley 310 is less than the rotational speed of the outgoing tension pulley 510; the steel core 10 of the steel-cored aluminum strand paid out from the wire pay-off rack 100 is wound on the wire-in tension pulley 310, passes through the heating device 400, and is wound on the wire-out tension pulley 510.
In the invention, the rotation speed of the wire inlet tension wheel 310 is smaller than that of the wire outlet tension wheel 510, so that prestress is applied to the steel core 10 in the process that the rotation speed of the wire outlet tension wheel 510 pushes the steel core 10 to be output; the incoming line tension device 300 and the outgoing line tension device 500 form a tension applying assembly for applying prestress to the steel core 10; the steel core 10 is subjected to prestress treatment, so that the steel core 10 obtains a certain compressive stress, and after the external aluminum wires are stranded, the mechanical properties of the aluminum stranded wires of the steel core 10 during construction and operation can be changed; the initial elongation of the steel core 10 during the subsequent construction is eliminated through the prestress treatment of the steel core 10, and the initial elongation of the whole steel core 10 aluminum stranded wire is further reduced through the cooperation of the steel core 10 aluminum stranded wire, and the stress distribution of the steel core 10 aluminum stranded wire can be changed, so that the temperature of the migration point of the steel core 10 aluminum stranded wire is reduced; the creep deformation of the steel core 10 is eliminated, so that the creep deformation of the whole steel core 10 aluminum stranded wire in the service life cycle is reduced, and the problem of sag increase after operation is solved; the heating device 400 is arranged between the wire inlet tension device 300 and the wire outlet tension device 500, and is used for heating the steel core 10 in the prestress treatment process, so that the stress distribution of the steel core 10 can be improved, the stress obtained by the steel core 10 acts together, the strain deformation of the steel core 10 is accelerated, and the effect of prestress treatment of the steel core 10 is achieved.
The system of the embodiment is adopted to pre-stress the steel core 10, namely, the initial elongation to be generated during the construction of the steel core 10 is eliminated in the production process in advance. The steel core 10 aluminum stranded wire is formed by compounding the steel core 10 and an aluminum wire, so that the initial elongation of the steel core 10 is reduced, and the initial elongation of the steel core 10 aluminum stranded wire is further reduced. The steel core 10 treated by the prestressing has a low creep amount, and a positive pressure is generated before twisting the aluminum wire, compared with the untreated steel core 10, so that when the entire steel core 10 aluminum strand is stressed after twisting the aluminum wire, a reaction force is generated for the tensile stress applied, and the action from the tensile stress is reduced. The external aluminium wire is thus rapidly subjected to forces, producing plastic deformation, and the tension of the aluminium strands of the subsequent steel core 10 is transferred to the steel core 10. So that the transition point temperature of the steel core 10 aluminum strands is lower than that of the untreated steel core 10 aluminum strands.
In this embodiment, the wire inlet wheel driving member is a wire inlet control motor, and the wire outlet wheel driving member is a wire outlet control motor.
The rotational speed of the outgoing line tension pulley 510 is 0.1m/min-0.5m/min faster than the rotational speed of the incoming line tension pulley 310. The wire-outlet tension wheel 510 applies prestress to the steel core 10 in the process of pushing the steel core 10 to output.
The heating device 400 is an intermediate frequency induction heating furnace. The medium frequency induction heating furnace can stably and uniformly heat the steel core 10. The intermediate frequency induction heating furnace is in non-contact heating, so that the influence on the prestress treatment process of the steel core 10 can be avoided.
Steel core 10 prestressing force processing system of steel-cored aluminum strand wires still includes: a blow cleaning device 600; the blow cleaning device 600 is disposed between the wire-out tension device 500 and the wire-collecting frame 200, and above the steel core 10 of the steel-cored aluminum strand. The air blowing cleaning device 600 can blow off impurities on the steel core 10 before the steel core 10 enters the wire collecting frame 200, so as to realize the cleaning effect on the surface of the steel core 10.
The embodiment also relates to a steel core 10 prestress treatment method of the steel-cored aluminum strand, which adopts a steel core 10 prestress treatment system of the steel-cored aluminum strand and comprises the following steps: after paying out a steel core 10 of a steel-cored aluminum strand from a wire pay-off frame 100, sequentially winding the steel core 10 on a wire-in tension wheel 310 of a wire-in tension device 300 and a wire-out tension wheel 510 of a wire-out tension device 500, wherein the wire-in tension device 300 and the wire-out tension device 500 apply tension to the steel core 10, the rotation speed of the wire-in tension wheel 310 is smaller than that of the wire-out tension wheel 510, and the applied tension of the steel core 10 output from the wire-out tension device 500 is 30% -60% of the maximum breaking force of the steel core 10; after the steel core 10 is output from the wire inlet tension device 300 and before the steel core 10 is input into the wire outlet tension device 500, the heating device 400 heats the steel core 10 at 360-400 ℃; the wire takeup frame 200 performs a wire takeup operation on the steel core 10 output from the wire-out tension device 500.
The tensile force applied to the steel core 10 outputted from the wire outlet tension device 500 is 30% -60% of the maximum breaking force of the steel core 10, so that the use strength of the steel core 10 can be ensured while the prestress treatment effect of the steel core 10 is ensured. The temperature at which the heating device 400 heats the steel core 10 can ensure the prestress treatment effect required to be achieved by the steel core 10.
The speed of the steel core 10 is 3-5m/min by the steel core 10 prestress treatment method. The wire exit tension device 500 processes the steel core 10 at a speed of 3-5m/min. The speed of the heating device 400 for treating the steel core 10 is 3-5m/min. The speed for processing the steel core 10 ensures the prestress processing effect of the steel core 10 and has higher processing efficiency.
The steel core 10 prestress treatment system further comprises: a blow cleaning device 600; the air blowing cleaning device 600 is arranged between the wire outlet tension device 500 and the wire collecting frame 200 and is positioned above the steel core 10 of the steel-cored aluminum stranded wire; the blowing cleaning device 600 blows the steel core 10 output by the wire inlet tension device 300, so as to realize the cleaning effect on the surface of the steel core 10.
The air blowing cleaning apparatus 600 blows high-pressure air to the surface of the steel core 10, and the pressure of the blown high-pressure air is 5Mpa to 7Mpa. Blowing high pressure gas can clean the surface of the steel core 10 quickly and efficiently.
The speed of the blow cleaning device 600 for treating the steel core 10 is 3-5m/min.
As shown in fig. 2, in the stress-strain line S1 of the untreated steel core 10, the stress-strain of the untreated steel core 10 is in a linear relationship in the initial stage, and after a certain deformation amount is reached, a slow increase in stress occurs, and the strain increases rapidly, which means that the untreated steel core 10 has been plastically deformed at this time. In the stress-strain line S2 of the carbon fiber composite core, the stress-strain is shown as a linear relationship for the whole stress phase of the carbon fiber composite core. Therefore, the carbon fiber composite core wire has excellent sag performance characteristics. As for the prestress treated steel core 10 of the present embodiment, as can be seen from fig. 2, in the stress-strain line S3 of the prestress treated steel core 10, the stress-strain also exhibits a linear relationship in the stress stage thereof, so that the wire having the same as the reinforcing core also has excellent sag performance characteristics.
The invention can solve the problem that the deformation and creep generated by the traditional steel core 10 aluminum stranded wire under the action of temperature and stress change the stress characteristics of the steel core 10 aluminum stranded wire, thereby affecting the operation safety of the steel core 10 aluminum stranded wire.
In summary, the present embodiment effectively overcomes the disadvantages of the prior art and has high industrial utility value.
The above embodiments are merely illustrative of the principles of the present embodiments and their efficacy, but are not limited to the embodiments. Modifications and variations may be made to the above-described embodiments by those of ordinary skill in the art without departing from the spirit and scope of the present embodiments. Accordingly, it is intended that all equivalent modifications and variations which can be made by those skilled in the art without departing from the spirit and technical spirit of the present embodiments shall be covered by the claims of the present embodiments.
Claims (10)
1. A steel core pre-stress treatment system for a steel core aluminum strand, comprising: the wire pay-off rack (100) and the wire take-up rack (200), wherein the wire pay-off rack (100) pays out a steel core (10) of the steel-cored aluminum strand, and the wire pay-off rack (100) receives the steel core (10) of the steel-cored aluminum strand; the wire pay-off rack is characterized in that a wire inlet tension device (300), a heating device (400) and a wire outlet tension device (500) are sequentially arranged between the wire pay-off rack (100) and the wire take-up rack (200);
the wire inlet tension device (300) comprises a wire inlet tension wheel (310) and a wire inlet wheel driving piece for driving the wire inlet tension wheel (310) to rotate;
the wire outlet tension device (500) comprises a wire outlet tension wheel (510) and a wire outlet wheel driving piece for driving the wire outlet tension wheel (510) to rotate;
the rotational speed of the incoming line tension wheel (310) is less than the rotational speed of the outgoing line tension wheel (510);
the steel core (10) of the steel-cored aluminum strand paid out from the wire pay-off rack (100) is wound on the wire-in tension wheel (310), penetrates into the heating device (400) and is wound on the wire-out tension wheel (510);
the tension applied to the steel core (10) output by the wire outlet tension device (500) is 30% -60% of the maximum breaking force of the steel core (10); after the steel core (10) is output from the wire inlet tension device (300) and before the steel core (10) is input into the wire outlet tension device (500), the steel core (10) is heated by the heating device (400), and the heating temperature is 360-400 ℃.
2. The steel core prestress treatment system of a steel-cored aluminum strand according to claim 1, wherein: the heating device (400) is an intermediate frequency induction heating furnace.
3. The steel core prestress treatment system of a steel-cored aluminum strand according to claim 1, wherein: further comprises: a blow cleaning device (600); the blowing cleaning device (600) is arranged between the wire outlet tension device (500) and the wire collecting frame (200) and is positioned above the steel core (10) of the steel-cored aluminum strand.
4. A steel core prestress treatment method of a steel core aluminum stranded wire, which adopts a steel core (10) prestress treatment system of the steel core aluminum stranded wire according to any one of claims 1-2, and is characterized in that: the method comprises the following steps:
after a steel core (10) of a steel-cored aluminum strand is paid out from a wire pay-off rack (100), the steel core (10) is sequentially wound on a wire-in tension wheel (310) of a wire-in tension device (300) and a wire-out tension wheel (510) of a wire-out tension device (500), the wire-in tension device (300) and the wire-out tension device (500) apply tension to the steel core (10), the rotation speed of the wire-in tension wheel (310) is smaller than that of the wire-out tension wheel (510), and the tension applied to the steel core (10) output from the wire-out tension device (500) is 30% -60% of the maximum breaking force of the steel core (10); after the steel core (10) is output from the wire inlet tension device (300) and before the steel core (10) is input into the wire outlet tension device (500), the steel core (10) is heated by a heating device (400), and the heating temperature is 360-400 ℃; the wire take-up frame (200) performs a take-up operation on the steel core (10) output from the wire-out tension device (500).
5. The steel core prestress treatment method of the steel-cored aluminum strand according to claim 4, wherein: the speed of the steel core (10) treated by the steel core (10) prestress treatment method is 3-5m/min.
6. The steel core prestress treatment method of the steel-cored aluminum strand according to claim 5, wherein the steel core prestress treatment method comprises the following steps: the speed of the wire outlet tension device (500) for treating the steel core (10) is 3-5m/min.
7. The steel core prestress treatment method of the steel-cored aluminum strand according to claim 5, wherein the steel core prestress treatment method comprises the following steps: the speed of the heating device (400) for treating the steel core (10) is 3-5m/min.
8. The steel core prestress treatment method of the steel-cored aluminum strand according to claim 4, wherein: the steel core (10) pre-stress treatment system further comprises: a blow cleaning device (600); the blowing cleaning device (600) is arranged between the wire outlet tension device (500) and the wire collecting frame (200) and is positioned above the steel core (10) of the steel-cored aluminum strand; the blowing cleaning device (600) blows the steel core (10) output by the wire inlet tension device (300).
9. The steel core prestress treatment method of the steel-cored aluminum strand of claim 8, wherein: the blowing cleaning device (600) blows high-pressure gas to the surface of the steel core (10), and the pressure of the blown high-pressure gas is 5Mpa-7Mpa.
10. The steel core prestress treatment method of the steel-cored aluminum strand of claim 8, wherein: the speed of the blowing cleaning device (600) for treating the steel core (10) is 3-5m/min.
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| CN109448917A (en) * | 2018-11-02 | 2019-03-08 | 江苏中天科技股份有限公司 | A kind of energy-saving low arc drop extra-heavy steel reinforced soft aluminum strand and its production technology |
| CN117649979B (en) * | 2023-12-04 | 2024-07-16 | 西隆电缆有限公司 | Production process of steel-cored aluminum strand and steel-cored aluminum strand |
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