CN111363891A - Continuous annealing production line for cable copper wire cores - Google Patents
Continuous annealing production line for cable copper wire cores Download PDFInfo
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- CN111363891A CN111363891A CN202010358868.4A CN202010358868A CN111363891A CN 111363891 A CN111363891 A CN 111363891A CN 202010358868 A CN202010358868 A CN 202010358868A CN 111363891 A CN111363891 A CN 111363891A
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
- C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (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 cable copper wire core continuous annealing production line, wherein a paying-off mechanism, a tensioning mechanism, a continuous annealing mechanism, a drying mechanism and a wire-rewinding mechanism are fixedly arranged on the ground in sequence; and the wire core is discharged from the pay-off mechanism, tensioned by the tensioning mechanism, enters the continuous annealing mechanism, is dried by the drying mechanism and is wound by the take-up mechanism. The invention relates to a single-wire type electrified continuous annealing device. The annealing device is generally arranged between the last wire drawing wheel and the take-up reel on the wire drawing machine to form a continuous production unit for wire drawing, annealing and taking-up one by one. The invention improves the labor condition, improves the production efficiency, and has uniform heating and high annealing quality; the heat brought away by a furnace body, a bracket and the like during coiling and coil annealing is saved, the fuel or electric energy is greatly saved, and the production cost is reduced.
Description
Technical Field
The invention relates to the field of cable production, in particular to a continuous annealing production line for a cable copper wire core.
Background
The copper-aluminum wire is drawn, and the cross section of the wire is reduced, the length of the wire is increased, metal crystal grains are refined, and internal stress, namely the work hardening phenomenon, is generated due to lattice distortion and dislocation. The strength and hardness are improved after drawing, but the elongation and conductivity are reduced, causing an increase in resistivity. The conductive wire core for manufacturing the electric wire and the electric cable mainly requires the conductivity, the toughness and the strength, so the soft and hard states of the conductive wire core are determined according to different requirements so as to meet the technical requirements of products, and the soft wire core or the semi-hard wire core needs to be annealed and softened.
Because of the chemical activity of aluminum, aluminum wires can generate a firm oxide film on the surface when heated (or at room temperature), and can protect the base metal from further oxidation. The aluminum wire can be annealed by direct exposure to air, i.e., "oxide anneal". However, since the copper wire has a loose surface oxide and a poor bonding force with the copper substrate, which is liable to peel off, if it is continuously oxidized, the conductor cross section is gradually reduced, so that the copper wire must be annealed by heating in an oxygen-free environment, or by heating in an environment filled with a protective gas, or by heating in a vacuum environment, i.e., "bright annealing".
The existing annealing equipment is mostly in an intermittent type mode, namely, a bundle of cables are sequentially heated, annealed and cooled, although gas protection can be adopted in the process, a plurality of useless working procedures are added, the labor intensity is high, the production period is long, the yield is low, the equipment is relatively large, the occupied area is large, the energy consumption is increased, and the production cost is increased; the oxidation of copper wires in the process of transferring after heating can cause the cable surface to be seriously oxidized, and the annealing is incomplete due to nonuniform heating of bundled cables. A continuous wire drawing line is therefore required.
Disclosure of Invention
The invention provides a continuous annealing production line for a copper wire core of a cable, which can enable the cable to complete all working procedures in annealing at one time.
The invention is realized by the following technical scheme:
the utility model provides a continuous annealing production line of cable copper core, fixedly sets up following subassembly in proper order on ground:
the pay-off mechanism comprises a pay-off rack and a pay-off guide wheel fixedly arranged at the bottom of the pay-off rack;
the tensioning mechanism is provided with a tensioning wheel;
the continuous annealing mechanism comprises a rack, wherein at least 3 electrode wheels conducting electricity by using an electric brush and a plurality of guide wheels are arranged on the rack, the rack is divided into a preheating area, an annealing area and a cooling area by the electrode wheels, the cooling area is provided with a cooling tank, and cooling liquid is filled in the cooling tank;
the wire winding machine also comprises a drying mechanism and a wire winding mechanism;
and the wire core is discharged from the pay-off mechanism, tensioned by the tensioning mechanism, enters the continuous annealing mechanism, is dried by the drying mechanism and is wound by the take-up mechanism.
Preferably, the continuous annealing mechanism comprises a rack, a first guide wheel is arranged on one side of the bottom of the rack close to the tensioning mechanism, a first electrode wheel is arranged on the other side of the first guide wheel, a second electrode wheel is arranged above the first electrode wheel, a first preheating zone is formed between the first electrode wheel and the second electrode wheel, and at least two guide wheels are arranged in the first preheating zone to enable the wire cores to be in a zigzag shape in the first preheating zone; a third electrode wheel is arranged on one side, close to the drying mechanism, of the second electrode wheel, and a second preheating area is formed between the second electrode wheel and the third electrode wheel; a cooling tank is arranged below the third electrode wheel, slow cooling liquid is filled in the cooling tank, a fourth electrode wheel is arranged at the left end of the cooling tank, an annealing area is arranged between the third electrode wheel and the fourth electrode wheel, a steam pipeline is arranged in the annealing area, and the wire core passes through the steam pipeline; and a plurality of cooling guide wheels are arranged on the right side of the cooling groove.
Preferably, the cooling guide wheels are arranged in at least three numbers and are staggered with each other, so that the wire cores are distributed in a zigzag manner in the cooling grooves.
Preferably, the cooling groove is provided with an outlet guide wheel above the cold wheel guide wheel, a backflow guide wheel is arranged above the outlet guide wheel, a drying guide wheel is arranged below the backflow guide wheel, and the wire core forms an inverted U shape among the outlet guide wheel, the backflow guide wheel and the drying guide wheel.
Preferably, the machine frame is provided with a guide buckle for stabilizing the wire core at the position where the wire core passes through.
Preferably, a power system is arranged on one side of the frame.
Preferably, the top of the pay-off stand is provided with a pay-off shaft for placing a wire coil, the pay-off shaft is driven by a driving mechanism, and the driving mechanism brakes automatically.
Preferably, the tensioning mechanism comprises a tensioning frame, at least two tensioning wheels which are arranged in a staggered mode are arranged on the tensioning frame, the wire core is wound on the tensioning wheels in a zigzag mode, and the tensioning wheels are provided with spiral wire grooves at least comprising one complete spiral.
Preferably, the drying mechanism comprises a drying box which is divided into an upper stage and a lower stage, the bottom of the drying box is subjected to electric heating drying, the top of the drying box is subjected to air cooling drying, and a plurality of guide wheels are arranged in each stage of drying box to enable the wire cores to be arranged in a zigzag shape; the electrothermal wires are arranged on two sides of the wire core in the electrothermal drying process, and the fan and the air outlet are arranged on two sides of the air-cooled drying process.
The invention has the following advantages:
1. the process of coiling and annealing is omitted, annealing is completed while wire drawing is performed, and production efficiency is improved;
2. the heating is uniform, and the annealing quality is high;
3. the labor condition is improved;
4. the heat brought away by a furnace body, a bracket and the like during coiling and coil annealing is saved, the fuel or electric energy is greatly saved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a cable copper core continuous annealing production line in an embodiment of the invention.
The reference numbers are as follows:
1, a pay-off mechanism; 2, a tensioning mechanism; 3, a continuous annealing mechanism; 4, a drying mechanism; 5, a wire rewinding mechanism; 6, a wire core; 7, the ground; 101, a pay-off rack; 102, paying-off shafts; 103, paying off a guide wheel; 201, a tensioning frame; 202, a tensioning wheel; 301, a frame; 302, a first guide wheel; 303, a second guide wheel; 304, a third guide wheel; 305, a first electrode wheel; 306, a second electrode wheel; 307, a third electrode wheel; 308, a fourth electrode wheel; 309, a cooling tank; 310, a steam pipeline; 311, cooling the guide wheel; 312, an exit guide wheel; 313, a backflow guide wheel; 314, a drying guide wheel; 401, drying oven.
Detailed Description
So that the objects, technical solutions and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in figure 1, the continuous annealing production line for the copper wire core of the cable is characterized in that the following components are sequentially and fixedly arranged on the ground 7:
paying-off mechanism 1, including on pay off rack 101 and fixed set up in the unwrapping wire leading wheel 103 of pay off rack 101 bottom, pay off rack 101 top sets up the paying out spool 102 that is used for placing the drum, and paying out spool 102 is provided with and drives through actuating mechanism, and actuating mechanism is from the area braking. The driving mechanism generally selects a motor with a speed reducer, and the speed reducer is internally provided with a brake, so that emergency braking can be realized when an accident occurs, and accidents caused by inertial rotation of a wire coil are prevented;
the tensioning mechanism 2 comprises a tensioning frame 201, wherein at least two tensioning wheels 202 which are arranged in a staggered mode are arranged on the tensioning frame 201, the wire core 6 is wound on the tensioning wheels 202 in a zigzag mode, a spiral wire groove at least containing one complete spiral is formed in the tensioning wheels 202, and the spiral wire groove can improve tensioning efficiency. In the embodiment, two tension pulleys 202 are adopted, each tension pulley 202 is provided with a circle of spiral line groove, and the cable is wound on each tension pulley 202 for a circle along the spiral line and then enters the next tension pulley 202; in some cases, the position of the tension wheel 202 can be adjusted, and the tension wheel is locked after adjusting the proper tension degree, so that the wire core 6 is kept in a stretched state and enters an annealing state;
the continuous annealing mechanism 3 comprises a frame 301, a first guide wheel 302 is arranged on one side of the bottom of the frame 301 close to the tensioning mechanism 2, a first electrode wheel 305 is arranged on the other side of the first guide wheel 302, a second electrode wheel 306 is arranged above the first electrode wheel 305, a first preheating zone is formed between the first electrode wheel 305 and the second electrode wheel 306, and at least two guide wheels (in the embodiment, two guide wheels, namely a second guide wheel 303 and a third guide wheel 304, are arranged) are arranged in the first preheating zone to enable the wire core 6 to be zigzag in the first preheating zone; a third electrode wheel 307 is arranged on one side of the second electrode wheel 306 close to the drying mechanism 4, and a second preheating zone is formed between the second electrode wheel 306 and the third electrode wheel 307; a cooling tank 309 is arranged below the third electrode wheel 307, slow cooling liquid is filled in the cooling tank 309, a fourth electrode wheel 308 is arranged at the left end of the cooling tank 309, an annealing area is arranged between the third electrode wheel 307 and the fourth electrode wheel 308, a steam pipeline 310 is arranged in the annealing area, and the wire core 6 passes through the steam pipeline 310; a plurality of cooling guide wheels 311 are provided on the right side of the cooling tank 309. The electrode wheels conduct electricity to the core wires through carbon brushes, the potentials of the first electrode wheel 305 and the fourth electrode wheel 308 are equal (set as positive electrodes), the third electrode wheel 307 is a negative electrode, the second electrode wheel 306 sets an intermediate potential according to different cables, and then the core wires 6 between the first electrode wheel 305 and the third electrode wheel 307 and between the third electrode wheel 307 and the fourth electrode wheel 308 are all provided with current and generate heat. As can be seen from fig. 1, the wire core 6 between the first electrode wheel 305 and the third electrode wheel 307 has a longer length, a larger resistance, a relatively smaller current, less heat generation than the wire core 6 between the third electrode wheel 307 and the fourth electrode wheel 308, a lower relative temperature of the monofilament, which is called a preheating section, and an annealing section between the third electrode wheel 307 and the fourth electrode wheel 308. Because copper wires are easy to oxidize at a high temperature, in order to avoid oxidation, water vapor needs to be introduced into an annealing section for protection.
In this embodiment, three cooling guide wheels 311 are provided and are staggered with each other, so that the wire cores 6 are distributed in the cooling groove 309 in a zigzag manner, the cooling area is increased, and the cooling effect is improved; the cooling groove 309 is located and is provided with export leading wheel 312 above the cold wheel leading wheel, is provided with backward flow leading wheel 313 above export leading wheel 312, and dry leading wheel 314 is provided to backward flow leading wheel 313 below, and the sinle silk 6 forms an inverted U-shaped between export leading wheel 312, backward flow leading wheel 313 and dry leading wheel 314, and this kind of setting can a large amount of refluxes of coolant liquid on the sinle silk 6, avoids polluting the production site.
In this embodiment, a power system is disposed on one side of the frame 301. The power system includes a distribution box and a console for supplying power to the electrode wheels, a compressor for supplying water vapor to the vapor pipe, and a circulating pump for supplying power to the circulation of the coolant. There are generally two ways to control the degree of annealing: the annealing current and the annealing voltage are controlled. The annealing current is proportional to the square of the annealing wire diameter and is related to the annealing speed (the faster the speed, the greater the annealing current needs to be); the annealing voltage depends only on the speed of annealing and the resistivity of the monofilament, independent of the wire diameter. For the above reasons, it is common to control the annealing voltage to control the annealing degree of the monofilament (elongation at break of the monofilament). Therefore, the console generally adopts voltage regulation control, and the voltage of each electrode wheel is set according to different parameters of the wire core 6.
The embodiment also comprises a drying mechanism 4 and a take-up mechanism 5; the drying mechanism 4 comprises a drying box 401, the drying box 401 is divided into an upper stage and a lower stage, the bottom is used for electric heating drying, the top is used for air cooling drying, and a plurality of guide wheels are arranged in each stage of drying box 401 to enable the wire cores 6 to be arranged in a zigzag shape; the two sides of the electric heating drying center wire core 6 are provided with electric heating wires, and the two sides of the air cooling drying center wire core are provided with fans and air outlets.
This is a single wire type of equipment for continuous annealing. The annealing device is generally arranged between the last wire drawing wheel and the take-up reel on the wire drawing machine to form a continuous production unit for wire drawing, annealing and taking-up one by one. The drawing wire core 6 passes through a plurality of electrode wheels (the diameter of the electrode wheels is about 100 times of the wire diameter), direct current is conducted among the electrode wheels, and the current is heated and annealed through the wire when the wire is contacted with the roller because the wire has resistance.
Wherein: the preheating section is the highest temperature which is not oxidized when the wire is heated to the temperature; the annealing section heats the wire to the annealing temperature to recrystallize the wire, and simultaneously utilizes water vapor to protect the surface of the annealing section. And cooling the annealed wire rod by a water tank. A small amount of lubricant emulsion can be placed in the water tank, and after the wire comes out of the water tank, the wire is dried by electric heat or dried by compressed air; the annealed wire core 6 can be wound on a take-up reel after being cooled by cooling liquid and dried by a drying box 401.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a continuous annealing production line of cable copper core which characterized in that, fixes on ground in proper order and sets up following subassembly:
the pay-off mechanism comprises a pay-off rack and a pay-off guide wheel fixedly arranged at the bottom of the pay-off rack;
the tensioning mechanism is provided with a tensioning wheel;
the continuous annealing mechanism comprises a rack, wherein at least 3 electrode wheels conducting electricity by using an electric brush and a plurality of guide wheels are arranged on the rack, the rack is divided into a preheating area, an annealing area and a cooling area by the electrode wheels, the cooling area is provided with a cooling tank, and cooling liquid is filled in the cooling tank;
the wire winding machine also comprises a drying mechanism and a wire winding mechanism;
and the wire core is discharged from the pay-off mechanism, tensioned by the tensioning mechanism, enters the continuous annealing mechanism, is dried by the drying mechanism and is wound by the take-up mechanism.
2. The continuous annealing production line for the cable copper wire core according to claim 1, wherein the continuous annealing mechanism comprises a frame, a first guide wheel is arranged on one side of the bottom of the frame, which is close to the tensioning mechanism, a first electrode wheel is arranged on the other side of the first guide wheel, a second electrode wheel is arranged above the first electrode wheel, a first preheating zone is formed between the first electrode wheel and the second electrode wheel, and the first preheating zone is provided with at least two guide wheels to enable the wire core to be in a zigzag shape in the first preheating zone; a third electrode wheel is arranged on one side, close to the drying mechanism, of the second electrode wheel, and a second preheating area is formed between the second electrode wheel and the third electrode wheel; a cooling tank is arranged below the third electrode wheel, slow cooling liquid is filled in the cooling tank, a fourth electrode wheel is arranged at the left end of the cooling tank, an annealing area is arranged between the third electrode wheel and the fourth electrode wheel, a steam pipeline is arranged in the annealing area, and the wire core passes through the steam pipeline; and a plurality of cooling guide wheels are arranged on the right side of the cooling groove.
3. The continuous annealing line for cable copper wire cores according to claim 2, wherein said cooling guide wheels are provided in at least three numbers and are staggered with each other so that the wire cores are distributed zigzag in the cooling grooves.
4. The continuous annealing production line for the cable copper wire cores as claimed in claim 2, wherein the cooling tank is provided with an outlet guide wheel above the cold wheel guide wheel, a return guide wheel above the outlet guide wheel, a drying guide wheel below the return guide wheel, and the wire cores are formed into an inverted U shape among the outlet guide wheel, the return guide wheel and the drying guide wheel.
5. The continuous annealing production line for the cable copper wire core according to claim 2, wherein a guide buckle for stabilizing the wire core is further arranged at a position on the rack where the wire core passes through.
6. The continuous annealing line for the copper wire core of the cable according to claim 2, wherein a power system is provided at one side of the machine frame.
7. The cable copper wire core continuous annealing production line according to claim 1, wherein a pay-off shaft for placing a wire coil is arranged at the top of the pay-off rack, the pay-off shaft is driven by a driving mechanism, and the driving mechanism is self-provided with a brake.
8. The continuous annealing line of cable copper wire core according to claim 1, wherein said tension mechanism comprises a tension frame, at least two tension pulleys are arranged on said tension frame, said tension pulleys are arranged with at least two tension pulleys staggered with each other, said wire core is wound on said tension pulleys in zigzag, and said tension pulleys are provided with a spiral wire groove containing at least one complete spiral.
9. The continuous annealing production line of the cable copper wire core according to claim 1, wherein the drying mechanism comprises a drying oven, the drying oven is divided into an upper stage and a lower stage, the bottom is used for electric heating drying, the top is used for air cooling drying, and a plurality of guide wheels are arranged in each stage of drying oven to enable the wire core to be arranged in a zigzag shape; the electrothermal wires are arranged on two sides of the wire core in the electrothermal drying process, and the fan and the air outlet are arranged on two sides of the air-cooled drying process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010358868.4A CN111363891A (en) | 2020-04-29 | 2020-04-29 | Continuous annealing production line for cable copper wire cores |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010358868.4A CN111363891A (en) | 2020-04-29 | 2020-04-29 | Continuous annealing production line for cable copper wire cores |
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| CN111363891A true CN111363891A (en) | 2020-07-03 |
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| CN202010358868.4A Pending CN111363891A (en) | 2020-04-29 | 2020-04-29 | Continuous annealing production line for cable copper wire cores |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112251593A (en) * | 2020-09-10 | 2021-01-22 | 东莞市永豪电业有限公司 | Annealing treatment process for cable production |
| CN112853085A (en) * | 2020-12-31 | 2021-05-28 | 广西纵览线缆集团有限公司 | Continuous annealing device and annealing method for copper wire |
| CN114657333A (en) * | 2022-03-24 | 2022-06-24 | 北京北缆富来科技有限公司 | Annealing device is used in copper line production |
| CN114672750A (en) * | 2022-03-25 | 2022-06-28 | 广东精达里亚特种漆包线有限公司 | Copper wire annealing and cooling treatment system and method |
-
2020
- 2020-04-29 CN CN202010358868.4A patent/CN111363891A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112251593A (en) * | 2020-09-10 | 2021-01-22 | 东莞市永豪电业有限公司 | Annealing treatment process for cable production |
| CN112853085A (en) * | 2020-12-31 | 2021-05-28 | 广西纵览线缆集团有限公司 | Continuous annealing device and annealing method for copper wire |
| CN114657333A (en) * | 2022-03-24 | 2022-06-24 | 北京北缆富来科技有限公司 | Annealing device is used in copper line production |
| CN114657333B (en) * | 2022-03-24 | 2022-10-11 | 北京北缆富来科技有限公司 | Annealing device for copper wire production |
| CN114672750A (en) * | 2022-03-25 | 2022-06-28 | 广东精达里亚特种漆包线有限公司 | Copper wire annealing and cooling treatment system and method |
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