CN114769346B - Continuous extrusion and stretching aluminum wire production method - Google Patents
Continuous extrusion and stretching aluminum wire production method Download PDFInfo
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- CN114769346B CN114769346B CN202210596426.2A CN202210596426A CN114769346B CN 114769346 B CN114769346 B CN 114769346B CN 202210596426 A CN202210596426 A CN 202210596426A CN 114769346 B CN114769346 B CN 114769346B
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 125
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 125
- 238000001125 extrusion Methods 0.000 title claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 31
- 238000004513 sizing Methods 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000005482 strain hardening Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000004381 surface treatment Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000000341 volatile oil Substances 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 3
- 230000007306 turnover Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 11
- 238000003754 machining Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C9/00—Cooling, heating or lubricating drawing material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention relates to the technical field of production and processing of aluminum materials, in particular to a continuous extrusion and stretching aluminum wire production method, which sequentially comprises raw material selection, straightening, surface treatment, extrusion molding, cooling and dewatering, stretching and sizing, rolling and packaging, so that a high-precision aluminum wire is obtained; extrusion molding process: selecting an extrusion die with a specific structure, continuously extruding raw materials into wires with a set size through an extruder, and then cooling and drying the wires; stretching and sizing: and (3) stretching and sizing the aluminum wire by using a drawing machine and a drawing die, so as to realize online continuous extrusion and online continuous cold work hardening. The invention has the advantages of short process flow, high production efficiency, low production cost and high aluminum wire size precision, and can effectively solve the technical problems of long production and processing period, multiple process flows, high production cost, poor aluminum wire size precision, poor processing performance and the like of the existing aluminum wire.
Description
Technical Field
The invention relates to the technical field of production and processing of aluminum materials, in particular to a continuous extrusion and stretching aluminum wire production method.
Background
With the rapid development of new energy battery technology, the market demand of materials for new energy battery poles is increasing. The terminal is a connecting terminal in the new energy battery, is a part for communicating the inside and the outside of the battery, one end of the terminal is connected with a battery core in the battery, and the other end of the terminal is connected with a circuit outside the battery, so that the battery can realize the charge and discharge functions. The aluminum wire is used as a material for the pole of the new energy battery, which can reduce weight and cost, and the quality of the aluminum wire seriously influences the service life and the safety performance of the new energy battery.
At present, two processing modes are mainly adopted in the production of aluminum wires in the market: one is a die casting-machining method, but the method has longer machining period and higher production cost; the other is a method of extruding rod-cold heading-machining, but the aluminum wire produced by the method has low dimensional accuracy, poor hardness, unsmooth cold heading, serious machining burrs and influences the quality stability of the pole.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the continuous extrusion and stretching aluminum wire production method which combines continuous extrusion and cold work hardening, can realize synchronous production of online continuous extrusion and online continuous cold work hardening of aluminum wires, and has the advantages of short process flow, high production efficiency and low production cost. The invention can effectively solve the technical problems of long processing period, multiple process flows, high production cost, poor diameter and size precision of the aluminum wire and poor processing performance in the existing aluminum wire production process.
In order to achieve the technical purpose, in one technical scheme of the invention, a continuous extrusion and stretching aluminum wire production method is provided, which sequentially comprises the following steps: raw material selection, straightening, surface treatment, extrusion molding, cooling, dewatering, stretching, sizing, rolling and packaging, so that a high-precision aluminum wire is obtained;
extrusion molding process: selecting an extrusion die with a specific structure, continuously extruding raw materials into wires with a set size through an extruder, and then cooling and drying the wires;
stretching and sizing: and (3) stretching and sizing the aluminum wire by using a drawing machine and a drawing die, so as to realize online continuous extrusion and online continuous cold work hardening.
By adopting the technical scheme, the continuous extrusion and the online cold work hardening are combined by arranging the continuous extrusion machine and the drawing device in series on line, so that continuous production of aluminum wire extrusion and drawing is realized, after the extrusion process is finished, the continuous drawing process can be carried out on line, and the drawing sizing is carried out without stopping and secondary transfer in the middle. The invention can obviously shorten the process flow, improve the production efficiency, reduce the production cost, reduce the generation of less intermediate waste, and has high material yield and high dimensional accuracy of the produced aluminum wire.
In some possible embodiments, the rotation speed of the continuous extrusion machine is controlled between 10 and 40r/min, and the extrusion temperature is between 300 and 500 ℃.
In some possible embodiments, in the stretching and sizing process, the drawing motor adopts a variable-frequency speed regulating motor and a potentiometer to control the rotating speed of the drawing wheel disc, so that the rotating speed of the drawing wheel disc is synchronously changed with the extrusion speed of the aluminum wire in continuous extrusion, and the online linkage of the drawing device and the continuous extrusion machine is ensured.
In some possible embodiments, the drawing motor is equipped with a speed reducer with a reduction ratio of (200-300): and 1, the power of the drawing motor is 15-22 KW, the torque is 50-100 N.m, and the drawing motor is used for providing strong enough tension for drawing the wheel disc and meeting the requirement of deformation in the process of drawing and sizing the aluminum wire.
In some possible embodiments, the left and right sides of the die sleeve in the drawing device are respectively provided with a first screw rod connected with the drawing die, so that the position of the drawing die is adjusted and moved in the horizontal direction, and the die hole of the drawing die and the aluminum wire entering and exiting from the front and back of the drawing die are concentrically arranged to ensure the dimensional accuracy of the aluminum wire product.
In some possible embodiments, the diameter of the drawing wheel disc is 1-2 m, so that deformation of an aluminum wire product when the aluminum wire product is wound on the surface of the drawing wheel disc is reduced, the appearance accuracy of the aluminum wire is improved, the surface roughness of the drawing wheel disc is 0.05-0.1 um, smoothness and wear resistance of the surface of the drawing wheel disc are ensured, and scratch of the aluminum wire product on the wheel disc is avoided. The surface of the drawn wheel disc is treated by adopting a processing method of low-temperature spraying and surface grinding.
In some possible embodiments, the method further comprises the steps of oiling and oil draining: after the aluminum wire is pulled by the pulling die and before the aluminum wire is wound around the pulling wheel disc, volatile oil is smeared on the surface of the aluminum wire, so that the aluminum wire can slide smoothly when the aluminum wire is wound around the pulling wheel disc, scratch on the surface of the aluminum wire is avoided, and after the aluminum wire is pulled out of the pulling wheel disc, the volatile oil on the surface of the aluminum wire is removed before the aluminum wire enters the winding machine.
In some possible embodiments, in the winding stage, the winding machine is driven by a motor, the aluminum wire after stretching and sizing is automatically wound and wound, and the rotating speed of the winding machine is regulated and controlled by the tension controller to be consistent with the output speed of the aluminum wire on the drawing wheel disc.
In some possible embodiments, the tolerance of the outer diameter of the produced high-precision aluminum wire is less than or equal to 0.05mm, and the hardened state of the product is H11-H18.
The continuous extrusion and stretching aluminum wire production method provided by the invention has the following beneficial effects:
the invention combines on-line continuous extrusion and on-line continuous cold work hardening, provides a method for synchronously producing extrusion and drawing in the production process of aluminum wires, can continuously carry out the drawing process on line after the extrusion process is finished, does not need intermediate shutdown and transportation, has short and continuous process flow, can obviously improve the production efficiency, reduces the waste of intermediate materials, reduces the processing cost, improves the processing performance of the aluminum wires, improves the material yield and the dimensional accuracy of the aluminum wires, has high dimensional accuracy of the produced aluminum wires, smooth surface, uniform and compact internal crystalline phase tissues and excellent tensile strength and hardness of the aluminum wires, and can meet the processing requirements of materials for the electrode posts of new energy batteries.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a flow chart of a continuous extrusion and continuous drawing aluminum wire production process in the invention;
fig. 2 is a schematic diagram showing the position adjustment of the drawing die in the present invention.
The reference numerals in the figures illustrate: 1. a frame; 2. a die sleeve; 3. a cover plate; 4. a first screw rod; 5. a second screw rod; 6. a third screw rod; 7. a base; 8. and (5) drawing the die.
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 specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The aluminum wire produced by the production method of the aluminum wire in the current market is low in dimensional accuracy, poor in hardness, unsmooth in cold heading, serious in machining burrs, capable of affecting the product quality of the new energy battery pole, long in machining period, high in production cost, capable of causing material waste and cost increase due to the fact that intermediate transfer is needed, and capable of easily generating scratch in the transfer process of the aluminum wire, so that the surface is defective, and the product quality is affected. The invention provides a continuous extrusion and stretching aluminum wire production method, which can continuously carry out a drawing process on line after the extrusion process is finished, does not need intermediate shutdown and transportation, has short process flow, high production efficiency and low processing cost, and the produced aluminum wire has high dimensional accuracy and good mechanical property and can meet the processing requirement of materials for new energy battery poles.
In one embodiment of the present invention, a method of producing a continuous extrusion stretched aluminum wire having a diameter of 18mm is provided. As shown in the production process flow chart in FIG. 1, the production method sequentially comprises the processes of raw material selection, straightening, surface treatment, extrusion molding, cooling and dewatering, stretching and sizing, rolling and packaging and the like, so that the high-precision aluminum wire is obtained. The whole production process is controlled by an electric appliance control system so as to realize the synchronism of the extrusion, drawing and winding speeds in the aluminum wire production process.
In the embodiment, a copper-aluminum continuous extrusion machine (model LJ300/110 manufactured by Hezhou Ai Bang mechanical technology Co., ltd.) is adopted in the extrusion molding process, the rotating speed is controlled to be 20-30 r/min, the extrusion temperature is 300-400 ℃, the aperture of an extrusion die is 18.38mm, and the diameter of an aluminum wire is 18.23mm after the extrusion by the extrusion machine. Cooling, removing water, and then entering a production process of stretching and sizing.
In the stretching and sizing process, the aperture of a drawing die in the drawing device is 18.18mm, the center position of a drawing die hole is adjusted to keep concentricity with an aluminum wire entering and exiting the drawing die, and the aluminum wire is wound on the surface of a drawing wheel disc after exiting the drawing die. And under the action of the traction force of the drawing wheel disc, the drawing sizing of the aluminum wire is realized. The diameter of the aluminum wire is reduced to 17.96-18 mm after drawing, and the deformation is about 2.7%. The surface of the drawing wheel disc is processed by a low-temperature spraying and surface grinding processing method, the diameter of the drawing wheel disc is 1m, so that the deformation of a product wound on the wheel disc is reduced, and the appearance accuracy is improved. The surface roughness of the drawing wheel disc is 0.05um, so that the surface is smooth and wear-resistant, and the product is prevented from being scratched on the wheel disc.
Specifically, in the stretching and sizing process, a speed regulating motor driven by a frequency converter is adopted as a drawing motor, the power is 15KW, the torque is 65 N.m, and a speed reducer and a two-stage belt transmission mode are adopted to control the speed reduction ratio to 225:1, the generated tensile force completely meets the drawing deformation requirement of the aluminum wire. The rotating speed signal of the motor is controlled by a potentiometer driven by the swing rod, and the rotating speed of the motor synchronously changes along with the linear speed of the aluminum extruded in the extruder, so that the online linkage of the drawing device and the extruder is ensured, and the online continuous extrusion and online continuous cold work hardening are realized. The drawing motor in this embodiment is a variable-frequency and speed-adjustable three-phase asynchronous motor, and may be any one of a dc brushless motor, an ac brushless motor or a switched reluctance motor.
The drawing die position of the drawing device in the embodiment can be freely adjusted to ensure that the position of the drawing die hole is concentric with the aluminum wire in and out, and the dimensional accuracy of the aluminum wire is improved. As shown in fig. 2, in the drawing device of this embodiment, left and right frames 1 are disposed on a base 7, a cover plate 3 is disposed above the frames 1, and a die sleeve 2 is disposed in a cavity surrounded by the left and right frames 1 and the cover plate 3. The drawing die 8 is arranged inside the die sleeve 2, the extruded aluminum wire passes through a die hole of the drawing die 8, and the drawing die 8 can be flexibly replaced according to actual processing conditions. The left side and the right side of the die sleeve 2 are respectively abutted with a first screw rod 4, and the first screw rod 4 penetrates through the frame 1 and is in threaded connection with the frame. The position of the movable drawing die 8 can be adjusted in the horizontal direction by rotating the first screw rods 4 on the left and right sides so as to be arranged concentrically with the aluminum wire extruded in the extruder, thereby ensuring the dimensional accuracy of the aluminum wire product. The second screw rod 5 is abutted to the upper side of the drawing die 8, and the second screw rod 5 penetrates through the die sleeve 2 and is in threaded connection with the die sleeve, so that the position of the drawing die 8 is limited in the vertical direction. A third screw rod 6 is abutted to the upper side of the die sleeve 2, and the third screw rod 6 penetrates through the cover plate 3 and is in threaded connection with the cover plate, so that the position of the die sleeve 2 is limited in the vertical direction.
And in the winding stage, the winding machine is driven by a motor to rotate, and the sizing aluminum wire from the drawing wheel disc is automatically wound and wound. The rotating speed of the winding machine is controlled by the tension controller, so that the rotating speed is consistent with the output speed of the aluminum wire on the drawing wheel disc.
The aluminum wire produced by the production method provided by the embodiment has the advantages of tensile strength of 84Mpa, elongation of 40%, vickers hardness of HV40, outer diameter of 17.96-18 mm, uniform and compact tissue structure, dry and smooth surface, and no defects of slag inclusion, scratch and the like.
In another embodiment of the present invention, there is provided a method for producing an aluminum wire by continuous extrusion stretching, referring to fig. 1, comprising the following processes in order: raw material selection, straightening, surface treatment, extrusion molding, cooling, dewatering, stretching, sizing, rolling and packaging, so that a high-precision aluminum wire is obtained; extrusion molding process: selecting an extrusion die with a specific structure, continuously extruding raw materials into wires with a set size through an extruder, and then cooling and drying the wires; stretching and sizing: and (3) stretching and sizing the aluminum wire by using a drawing machine and a drawing die, so as to realize online continuous extrusion and online continuous cold work hardening.
Further, in another embodiment of the invention, the rotating speed of the continuous extrusion machine is controlled to be 10-40 r/min, and the extrusion temperature is 300-500 ℃ so as to meet the extrusion requirements of the size and the performance of the aluminum wire.
Further, in another embodiment of the invention, in the stretching and sizing process, the drawing motor adopts a variable-frequency speed regulating motor and a potentiometer to control the rotating speed of the drawing wheel disc, so that the rotating speed is synchronously changed with the extrusion speed of the aluminum wire in continuous extrusion, and the online linkage of the drawing device and the continuous extrusion machine is ensured.
Further, in another embodiment of the present invention, a reduction gear is mounted to the drawing motor, and the reduction ratio is (200 to 300): and 1, the power of a drawing motor is 15-22 KW, the torque is 50-100 N.m, and the drawing motor is used for providing strong enough tension for a drawing wheel disc in a drawing and sizing stage to meet the drawing deformation requirement of an aluminum wire.
In order to further improve the heat dissipation effect of the motor in the drawing device, in another embodiment of the invention, an exhaust fan is arranged at the rear end of the motor for enhancing ventilation and heat dissipation.
Further, in another embodiment of the present invention, referring to fig. 2, the left and right sides of the die sleeve 2 in the drawing device are respectively provided with a first screw rod 4 for adjusting the position of the moving drawing die 8 in the horizontal direction, so that the die hole and the aluminum wire entering and exiting the drawing die 8 are concentrically arranged to ensure the dimensional accuracy of the aluminum wire product.
Further, in another embodiment of the invention, the diameter of the drawing wheel disc is 1-2 m so as to reduce the deformation of the aluminum wire product when the aluminum wire product is wound on the surface of the drawing wheel disc, improve the appearance precision of the aluminum wire, and ensure the surface smoothness and wear resistance of the drawing wheel disc by ensuring the surface roughness of the drawing wheel disc to be 0.05-0.1 um, and avoid the aluminum wire product from being scratched on the wheel disc. The surface of the drawing wheel disc is treated by adopting a processing method of low-temperature spraying and surface grinding.
In order to further reduce the surface defects caused by scraping of aluminum wires in the traction and winding process of the drawing wheel disc, in another embodiment of the invention, volatile oil is smeared on the surfaces of the aluminum wires after the aluminum wires are drawn by the drawing die and before the aluminum wires are wound around the drawing wheel disc, so that the lubricity of the surfaces of the aluminum wires is improved, the aluminum wires slide smoothly when the aluminum wires are wound around the drawing wheel disc, and the scratch on the surfaces of the aluminum wires is avoided. In addition, after the aluminum wire is drawn out of the wheel disc and before the aluminum wire enters the winding machine, volatile oil on the surface of the aluminum wire can be erased by utilizing a silica gel skin.
In a further embodiment of the invention, in the winding stage, the winding machine is driven by a motor, the stretched and sized aluminum wire is automatically wound and wound, and the rotating speed of the winding machine is regulated and controlled by the tension controller to be consistent with the output speed of the aluminum wire on the drawing wheel disc.
In conclusion, the continuous extrusion sizing and online cold work hardening are combined, and continuous production of extrusion and drawing of aluminum wires is realized. After the extrusion process is finished, the drawing process can be continuously performed, and the drawing process is performed without stopping and secondary transfer in the middle, so that the process flow can be obviously shortened, the production efficiency is improved, the production cost is reduced, the intermediate waste is reduced, and the yield is improved. The aluminum wire produced by the method has high dimensional accuracy, the outer diameter tolerance is less than or equal to 0.05mm, the surface is smooth, the defects of slag inclusion, scratch and the like are avoided, the internal crystalline phase tissue is uniform and compact, the hardening state of the aluminum wire is H11-H18, and the processing requirement of the material for the new energy battery pole can be met.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments, and it is not intended to limit the practice of the invention to those descriptions. Therefore, those skilled in the art should appreciate that many modifications, such as those described above, can be made by logic analysis, reasoning, or limited experimentation in light of the teaching of the present invention while remaining within the scope of protection defined by the following claims.
Claims (7)
1. The continuous extrusion and stretching aluminum wire production method is characterized by comprising the following steps of: raw material selection, straightening, surface treatment, extrusion molding, cooling, dewatering, stretching, sizing, rolling and packaging, so that a high-precision aluminum wire is obtained;
extrusion molding process: selecting an extrusion die with a specific structure, adopting a copper-aluminum continuous extruder with the model LJ300/110 manufactured by Changzhou Ai Bang mechanical technology Co., ltd, continuously extruding raw materials into wires with a set size through the extruder, and then cooling and drying;
stretching and sizing: drawing and sizing are carried out on the aluminum wire by using a drawing machine and a drawing die, so that online continuous extrusion and online continuous cold work hardening are realized;
in the stretching and sizing process, the drawing motor adopts a variable-frequency speed regulating motor and a potentiometer to control the rotating speed of a drawing wheel disc, so that the rotating speed is synchronously changed with the extrusion speed of the aluminum wire in continuous extrusion, and the online linkage of a drawing device and the continuous extrusion machine is ensured;
in drawing device, drawing die sets up inside the mould cover, and the aluminium wire passes drawing die's nib, and the mould cover is located about two frames and apron enclose the cavity, and the left and right both sides of mould cover are respectively the butt has first lead screw, and first lead screw runs through the frame and rather than threaded connection for adjust the position that removes drawing die in the horizontal direction, make drawing die's nib and drawing die around the aluminium wire concentric setting of business turn over, in order to ensure the dimensional accuracy of aluminium wire product.
2. The continuous extrusion and drawing aluminum wire production method according to claim 1, wherein the rotating speed of the continuous extrusion machine is controlled to be 10-40 r/min, and the extrusion temperature is 300-500 ℃.
3. The continuous extrusion-drawing aluminum wire production method according to claim 1, wherein a speed reducer is assembled in the drawing motor, and the speed reduction ratio is (200-300): and 1, the power of the drawing motor is 15-22 KW, and the torque is 50-100 N.m.
4. The continuous extrusion-drawing aluminum wire production method according to claim 1, wherein the diameter of the drawing wheel disc is 1-2 m, and the surface roughness is 0.05-0.1 um.
5. The method for producing aluminum wire by continuous extrusion stretching as recited in claim 1, further comprising the steps of oiling and draining: after the aluminum wire is drawn by the drawing die and before the aluminum wire is wound around the drawing wheel disc, volatile oil is smeared on the surface of the aluminum wire so as to reduce scratch on the surface of the aluminum wire, and after the aluminum wire is drawn out of the drawing wheel disc, the volatile oil on the surface of the aluminum wire is removed before the aluminum wire enters the winding machine.
6. The continuous extrusion and drawing aluminum wire production method according to claim 1, wherein in the winding stage, a winding machine is driven by a motor to automatically wind and wind the drawn and sized aluminum wire, and the rotating speed of the winding machine is regulated and controlled by a tension controller.
7. The method for producing aluminum wires by continuous extrusion and drawing according to any one of claims 1 to 6, wherein the tolerance of the outer diameter of the produced high-precision aluminum wires is less than or equal to 0.05mm, and the aluminum wires are in a hardened state H11 to H18.
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| CN102310118A (en) * | 2011-09-16 | 2012-01-11 | 常州日月机械有限公司 | High strength flat wire production technology and equipment |
| CN102492877A (en) * | 2011-12-31 | 2012-06-13 | 辽宁忠旺集团有限公司 | Extruding processing technology of aluminium alloy tubing with large diameter |
| CN102828130A (en) * | 2012-09-07 | 2012-12-19 | 湖南金龙电缆有限公司 | Process for producing aluminum alloy conductor |
| CN103537502A (en) * | 2013-11-04 | 2014-01-29 | 张家港市昊天金属科技有限公司 | Aluminium profile extrusion process |
| CN104259238A (en) * | 2014-07-25 | 2015-01-07 | 陕西省军工（集团）陕铜有限责任公司 | Processing method of oxygen-free copper sectional materials |
| CN106734326A (en) * | 2017-02-27 | 2017-05-31 | 江西凯顺科技有限公司 | The continuous formed by extrusion and tension unit of copper aluminium material |
| CN107190182A (en) * | 2017-06-14 | 2017-09-22 | 合肥博创机械制造有限公司 | A kind of aluminum alloy wire and preparation method thereof |
| JP2019099865A (en) * | 2017-12-01 | 2019-06-24 | 神鋼商事株式会社 | Aluminium alloy single wire excellent in drawing workability |
| CN110724862A (en) * | 2019-10-24 | 2020-01-24 | 广西南南铝加工有限公司 | Preparation process of aluminum alloy section for ship |
| CN111112365A (en) * | 2019-12-24 | 2020-05-08 | 法尔胜泓昇集团有限公司 | Multi-component aluminum alloy welding wire and preparation method thereof |
| CN113293273A (en) * | 2021-04-13 | 2021-08-24 | 中铝材料应用研究院有限公司 | Processing method of 2xxx series aluminum alloy bar and wire for fastener |
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