CN110756614B - Production process of copper rod - Google Patents

Production process of copper rod Download PDF

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Publication number
CN110756614B
CN110756614B CN201911053200.2A CN201911053200A CN110756614B CN 110756614 B CN110756614 B CN 110756614B CN 201911053200 A CN201911053200 A CN 201911053200A CN 110756614 B CN110756614 B CN 110756614B
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China
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copper
twisting
rolling
rod
continuous casting
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CN201911053200.2A
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CN110756614A (en
Inventor
俞晋连
寿荣
黄晓鹏
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Hangzhou Futong Electric Wire & Cable Co ltd
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Hangzhou Futong Electric Wire & Cable Co ltd
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Priority to CN202011561965.XA priority patent/CN112828067B/en
Publication of CN110756614A publication Critical patent/CN110756614A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Extrusion Of Metal (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)

Abstract

The invention discloses a production process of a copper rod, which comprises the following steps: 1) putting an electrolytic copper raw material into a closed mixed melting furnace for smelting, wherein charcoal and graphite flakes are covered in a smelting device; 2) transferring the melt in the closed mixed melting furnace to an upper continuous casting melting furnace; leading the melt into a continuous casting crystallizer through a siphon action, and leading out an upper copper-leading rod crystallized in the continuous casting crystallizer from the top of the continuous casting crystallizer through a drawing device; 3) the copper leading rod is used as a raw material, and a forming device of a continuous extrusion unit is adopted to extrude and prepare a copper wire blank; 4) rolling the copper wire blank into a copper rod by using a rolling machine set; the twisting device is arranged at the rear end of the drawing device, and the twisting device utilizes the performance of better ductility of the copper rod at high temperature to twist the copper rod with higher temperature after drawing and correct the appearance of the drawn copper rod to make the copper rod more mellow.

Description

Production process of copper rod
Technical Field
The invention relates to the field of copper rod production, in particular to a production process of a copper rod.
Background
Wind power generation is the cleanest and safe in the current power generation technology, the development speed of wind power generation in the world exceeds the development of other new energy sources, and the wind power generation is likely to become one of the main sources of global power in the future. According to the forecast of the Chinese wind energy society, the total installed capacity of Chinese wind power reaches 80 hundred million watts in 2020, 180 hundred million watts in 2030 and 500 hundred million watts in 2050. The government of China will strongly support the construction of smart power grids, solve the problem of wind power transmission, and wind power will become one of the main sources of electric power in China in the future.
The generator set, transformer, traction motor, contact wire, etc. that above-mentioned industry was used all need use a large amount of high-quality electromagnetic copper lines. The main quality indexes for measuring the electromagnetic copper wire comprise tensile strength, elongation, electric conductivity, pressure resistance, oxygen content and roundness. In the existing production process of the copper rod, the copper rod manufactured by the upward drawing method is rolled and extended, and the defect that the roundness of the section of the rolled copper rod is low exists
Disclosure of Invention
The invention provides a production process of a copper rod, aiming at the problems, and solving the defect that the roundness of the section of the rolled copper rod is lower when the copper rod manufactured by an upward drawing method is rolled and extended in the existing production process of the copper rod.
The technical scheme adopted by the invention is as follows:
a production process of a copper rod comprises the following steps:
1) putting an electrolytic copper raw material into a closed mixed melting furnace for smelting, wherein charcoal and graphite flakes are covered in a smelting device;
2) transferring the melt in the closed mixed melting furnace to an upward continuous casting melting furnace, wherein the heating temperature of the upward continuous casting melting furnace is 1080-1100 ℃; then, the melt enters a continuous casting crystallizer through the siphon action, and is cooled and crystallized in the continuous casting crystallizer through a cooling water system; leading out the crystallized upper copper-leading rod in the continuous casting crystallizer from the top of the continuous casting crystallizer through a drawing device;
3) the copper leading rod is used as a raw material, and a forming device of a continuous extrusion unit is adopted to extrude and prepare a copper wire blank;
4) rolling the copper wire blank into a copper rod by a rolling machine set; the rolling forming process comprises 4 times of rolling;
the rolling press unit in the step 4) comprises a rolling press mechanism, a twisting mechanism and a cooling liquid injection mechanism, wherein the rolling press mechanism comprises a rolling press die, the upward copper rod penetrates through the rolling press die and extends outwards into the twisting mechanism, the twisting mechanism comprises a longitudinal twisting unit and a transverse twisting unit, and the cooling liquid injection mechanism is arranged between the longitudinal twisting unit and the transverse twisting unit; the transverse twisting machine set comprises a pair of transverse twisting disks, the transverse twisting disks are in transmission connection with a first driving motor, the longitudinal twisting machine set comprises a pair of longitudinal twisting disks, and the longitudinal twisting disks are in transmission connection with a second driving motor; the longitudinal twisting machine set is mounted on a rotary table, a first rotary shaft is mounted at the bottom of the rotary table, the bottom of the first rotary shaft is mounted on a rotary shaft seat, a sliding groove is formed in the rotary shaft seat, the first rotary shaft is inserted into the sliding groove, a round rotary wheel is further arranged on the first rotary shaft, a cam attached to the rotary wheel is arranged on one side of the rotary wheel, an extrusion spring is mounted in the sliding groove, the first rotary shaft moves along the sliding groove under the pushing of the cam, and the extrusion spring is used for providing elastic force for enabling the first rotary shaft to return; the cam is provided with a second rotating shaft, the top of the second rotating shaft extends out of the cam and is connected with a first turbine which is transversely arranged through synchronous belt transmission, and one side of the first turbine is provided with a second turbine which is meshed with the first turbine;
the cooling liquid injection mechanism comprises an injection inner pipe, the injection inner pipe is connected with a fixed outer pipe through a changing joint, the fixed outer pipe is externally connected with a liquid storage tank through a water inlet pipeline, a pressure pump is arranged on the water inlet pipeline, a rotating ring communicated with the fixed outer pipe is further arranged on the periphery of the fixed outer pipe, the rotating ring is communicated with the injection inner pipe through a connecting pipe, and the injection inner pipe is connected with a second turbine through belt transmission and is used for rotating under the driving of the second turbine; the three spray heads are arranged on the rotating ring, the spray heads are configured to spray liquid to drive the rotating ring to rotate in a single direction, a cooling cavity communicated with the spray inner pipe is arranged in the rotating ring, and a cleaning window convenient for the cooling liquid to pass through is arranged on one side, close to the rotating ring, of the spray inner pipe. The twisting device is arranged at the rear end of the drawing device, and is used for twisting the copper rod with higher temperature after drawing, and the copper rod with better ductility at high temperature is utilized, so that the appearance of the drawn copper rod is corrected to be more smooth. Meanwhile, the twisting wheel set in the horizontal direction periodically swings by utilizing the rotation generated by the cooling liquid injection device, an additional power device is not required to be arranged, the injection rate of the cooling liquid can be adjusted by adjusting the twisting period, and when the drawing temperature is higher, the injection rate of the cooling liquid needs to be increased, and the twisting effect is increased.
Optionally, the drawing device in the step 2) draws the upper copper drawing rod at a speed of 100-120 mm per minute.
Optionally, the diameter of the upward copper rod in the step 2) is 30mm, the diameter tolerance of the upward copper rod is less than +/-0.1 mm, and the pitch of the upward copper rod is 3-3.8 mm.
Optionally, in the step 4), the die angle of the rolling die in the rolling forming is in the range of 5-15 °.
Optionally, the coolant liquid injection mechanism still includes fixed reflection assembly, fixed reflection assembly includes the dead lever and is connected three arc reflecting plates with the dead lever, the normal of arc reflecting plate is at least partial to pointing to the washing window for the reflection coolant liquid is to in the washing window. The invention is provided with the fixed reflection assembly which can rebound the liquid sprayed by the spray head to the cleaning window, thereby enlarging the spray range of the spray opening and reducing the waste of the cooling liquid.
Optionally, the three arc-shaped reflecting plates are sequentially connected through the connecting block, and one arc-shaped reflecting plate in the middle is directly connected with the top end of the fixing rod.
(III) advantageous effects
1. The twisting device is arranged at the rear end of the drawing device, and the twisting device utilizes the performance of better ductility of the copper rod at high temperature to twist the copper rod with higher temperature after drawing and correct the appearance of the drawn copper rod to make the copper rod more mellow. Meanwhile, the twisting wheel set in the horizontal direction periodically swings by utilizing the rotation generated by the cooling liquid injection device, an additional power device is not required to be arranged, the cooling liquid injection rate can be adjusted by adjusting the cooling liquid injection rate, the twisting period is adjusted at the same time, the twisting of the copper rod is realized, and when the drawing temperature is higher, the cooling liquid injection rate needs to be increased, and the twisting effect is increased.
2. The invention is provided with the fixed reflection assembly which can rebound the liquid sprayed by the spray head to the cleaning window, thereby enlarging the spray range of the spray opening and reducing the waste of the cooling liquid.
Description of the drawings:
fig. 1 is a side view structural view of a rolling mill train according to embodiment 2 of the present invention.
Fig. 2 is a partial sectional view of the rolling mechanism, the twisting mechanism, and the coolant injection mechanism of the rolling mill group according to embodiment 2 of the present invention.
Fig. 3 is a side view of a longitudinal twist unit of a calender unit according to embodiment 2 of the present invention.
Fig. 4 is a front view of a cooling liquid spray mechanism according to embodiment 2 of the present invention.
Fig. 5 is a cross-sectional view of a rotating ring of a calender stack according to embodiment 2 of the present invention.
Fig. 6 is a top view of the injection inner tube of the calender stack of example 2 of the present invention.
Fig. 7 is a schematic view of the assembly of the runner and cam of the rolling mill train according to embodiment 2 of the present invention.
The figures are numbered:
1. rolling and pressing mechanism, 2, twisting mechanism, 3, cooling liquid spraying mechanism, 4, rolling and pressing die, 5, longitudinal twisting unit, 6, transverse twisting unit, 7, longitudinal twisting disc, 8, second driving motor, 9, transverse twisting disc, 10, first driving motor, 11, first rotating shaft, 12, chute, 13, rotating wheel, 14, cam, 15, second rotating shaft, 16, synchronous belt, 17, spraying inner pipe, 18, fixed reflection assembly, 19, adapter, 20, fixed outer pipe, 21, water inlet pipeline, 22, liquid storage tank, 23, connecting block, 24, pressure pump, 25, connecting pipe, 26, rotating ring, 27, first turbine, 28, second turbine, 29, belt, 30, spraying head, 31, cooling cavity, 32, cleaning window, 33, fixing rod, 34, arc-shaped reflection plate, 35, rotating shaft seat, 36 and extrusion spring.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
The first embodiment is as follows: as shown in fig. 1 and 2, the invention also discloses a production process of the copper rod, which comprises the following steps:
a production process of a copper rod comprises the following steps:
1) putting an electrolytic copper raw material into a closed mixed melting furnace for smelting, wherein charcoal and graphite flakes are covered in a smelting device, a ventilation inlet is formed in the bottom of the closed mixed melting furnace, and a ventilation outlet is formed in the top of the closed mixed melting furnace;
2) transferring the melt in the closed mixed melting furnace to an upward continuous casting melting furnace, wherein the heating temperature of the upward continuous casting melting furnace is 1080-1100 ℃; then, the melt enters a continuous casting crystallizer through the siphon action, and is cooled and crystallized in the continuous casting crystallizer through a cooling water system; leading out the crystallized upper copper-leading rod in the continuous casting crystallizer from the top of the continuous casting crystallizer through a drawing device; the diameter of the upper copper guiding rod is 30mm, the diameter tolerance of the upper copper guiding rod is less than +/-0.1 mm, and the pitch of the upper copper guiding rod is 3-3.8 mm; and pulling the upper copper-drawing rod at a speed of 100-120 mm per minute.
3) The copper leading rod is used as a raw material, and a forming device of a continuous extrusion unit is adopted to extrude and prepare a copper wire blank;
4) rolling the copper wire blank into a copper rod by using a rolling machine set; the rolling forming process comprises 4 times of rolling; the die angle range of the rolling die in the rolling forming is 5-15 degrees.
Example two: as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, the present invention discloses a rolling unit comprising a rolling mechanism 1, a twisting mechanism 2 and a cooling liquid injection mechanism 3, wherein the rolling mechanism comprises a rolling mold 4, the upper copper rod passes through the rolling mold and extends outwards into the twisting mechanism, the twisting mechanism comprises a longitudinal twisting unit 5 and a transverse twisting unit 6, and the cooling liquid injection mechanism is arranged between the longitudinal twisting unit and the transverse twisting unit; the transverse twisting machine set comprises a pair of transverse twisting disks 9, the transverse twisting disks are in transmission connection with a first driving motor 10, the longitudinal twisting machine set comprises a pair of longitudinal twisting disks 7, and the longitudinal twisting disks are in transmission connection with a second driving motor 8; the longitudinal twisting machine set is arranged on a rotary table, a first rotary shaft 11 is arranged at the bottom of the rotary table, the bottom of the first rotary shaft is arranged on a rotary shaft seat 35, a sliding groove 12 is formed in the rotary shaft seat, the first rotary shaft is inserted into the sliding groove, a round rotary wheel 13 is further arranged on the first rotary shaft, a cam 14 attached to one side of the rotary wheel is arranged on one side of the rotary wheel, an extrusion spring 36 is arranged in the sliding groove, one end of the extrusion spring abuts against the inner wall of the sliding groove, and the other end of the extrusion spring abuts against the first rotary shaft; the first rotating shaft moves along the sliding groove under the pushing of the cam, and the extrusion spring is used for providing elastic force for enabling the first rotating shaft to return; a second rotating shaft 15 is arranged on the cam, the top of the second rotating shaft extends out of the cam and is in transmission connection with a first turbine 27 which is transversely arranged through a synchronous belt 16, and a second turbine which is meshed with the first turbine is arranged on one side of the first turbine; the inner injection pipe is in transmission connection with a second turbine 28 through a belt 29 and is driven by the second turbine to rotate;
the coolant liquid injection mechanism is including spraying inner tube 17 and fixed reflection subassembly 18, it connects fixed outer tube 20 through trading joint 19 to spray the inner tube, fixed outer tube passes through the external liquid storage pot 22 of intake pipe 21, the force (forcing) pump 24 is equipped with on the intake pipe, fixed outer tube periphery still is equipped with rather than intercommunication swivel becket 26, the swivel becket passes through connecting pipe 25 intercommunication and sprays the inner tube, three injector head 30 is equipped with on the swivel becket, the injector head is configured into to spray liquid and is rotatory with the drive swivel becket folk prescription, be equipped with the cooling chamber 31 that the intercommunication sprayed the inner tube in the swivel becket, it is equipped with the cleaning window 32 that the coolant liquid of being convenient for passes through to spray.
The fixed reflection assembly comprises a fixed rod 33 and three arc-shaped reflection plates 34 connected with the fixed rod, and the normal lines of the arc-shaped reflection plates at least partially point to the cleaning window and are used for reflecting cooling liquid to the cleaning window. The three arc-shaped reflecting plates are sequentially connected through the connecting block 23, and one arc-shaped reflecting plate in the middle is directly connected with the top end of the fixing rod.
In the implementation of the embodiment, the copper rod is discharged through the rolling die and sequentially passes through the transverse twisting unit, the cooling liquid injection mechanism and the longitudinal twisting unit, during which the pair of first driving motors drive the pair of transverse twisting wheels to rotate, and simultaneously the pair of second driving motors drive the pair of longitudinal twisting wheels to rotate, so that the roundness of the copper rod is improved by transversely and longitudinally twisting the copper rod; during this, the pressure pump of coolant liquid injection mechanism increases water pressure for coolant liquid spouts through the shower nozzle of go-between, and then rotates under the reaction force of jet liquid, sprays the rotation of inner tube simultaneously, through the transmission of first turbine and second turbine, makes the carousel swing along the spout, makes horizontal twist device swing and has improved the effect of twisting.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.

Claims (6)

1. The production process of the copper rod is characterized by comprising the following steps of:
1) putting an electrolytic copper raw material into a closed mixed melting furnace for smelting, wherein charcoal and graphite flakes are covered in a smelting device;
2) transferring the melt in the closed mixed melting furnace to an upward continuous casting melting furnace, wherein the heating temperature of the upward continuous casting melting furnace is 1080-1100 ℃; then, the melt enters a continuous casting crystallizer through the siphon action, and is cooled and crystallized in the continuous casting crystallizer through a cooling water system; leading out the crystallized upper copper-leading rod in the continuous casting crystallizer from the top of the continuous casting crystallizer through a drawing device;
3) the copper leading rod is used as a raw material, and a forming device of a continuous extrusion unit is adopted to extrude and prepare a copper wire blank;
4) rolling the copper wire blank into a copper rod by using a rolling machine set; the rolling forming process comprises 4 times of rolling;
the rolling press unit in the step 4) comprises a rolling press mechanism, a twisting mechanism and a cooling liquid injection mechanism, wherein the rolling press mechanism comprises a rolling press die, the upward copper rod penetrates through the rolling press die and extends outwards into the twisting mechanism, the twisting mechanism comprises a longitudinal twisting unit and a transverse twisting unit, and the cooling liquid injection mechanism is arranged between the longitudinal twisting unit and the transverse twisting unit; the transverse twisting machine set comprises a pair of transverse twisting disks, the transverse twisting disks are in transmission connection with a first driving motor, the longitudinal twisting machine set comprises a pair of longitudinal twisting disks, and the longitudinal twisting disks are in transmission connection with a second driving motor; the longitudinal twisting machine set is mounted on a rotary table, a first rotary shaft is mounted at the bottom of the rotary table, the bottom of the first rotary shaft is mounted on a rotary shaft seat, a sliding groove is formed in the rotary shaft seat, the first rotary shaft is inserted into the sliding groove, a round rotary wheel is further arranged on the first rotary shaft, a cam attached to the rotary wheel is arranged on one side of the rotary wheel, an extrusion spring is mounted in the sliding groove, the first rotary shaft moves along the sliding groove under the pushing of the cam, and the extrusion spring is used for providing elastic force for enabling the first rotary shaft to return; the cam is provided with a second rotating shaft, the top of the second rotating shaft extends out of the cam and is connected with a first turbine which is transversely arranged through synchronous belt transmission, and one side of the first turbine is provided with a second turbine which is meshed with the first turbine;
the cooling liquid injection mechanism comprises an injection inner pipe, the injection inner pipe is connected with a fixed outer pipe through a changing joint, the fixed outer pipe is externally connected with a liquid storage tank through a water inlet pipeline, a pressure pump is arranged on the water inlet pipeline, a rotating ring communicated with the fixed outer pipe is further arranged on the periphery of the fixed outer pipe, the rotating ring is communicated with the injection inner pipe through a connecting pipe, and the injection inner pipe is connected with a second turbine through belt transmission and is used for rotating under the driving of the second turbine; the three spray heads are arranged on the rotating ring, the spray heads are configured to spray liquid to drive the rotating ring to rotate in a single direction, a cooling cavity communicated with the spray inner pipe is arranged in the rotating ring, and a cleaning window convenient for the cooling liquid to pass through is arranged on one side, close to the rotating ring, of the spray inner pipe.
2. The process for producing a copper bar as claimed in claim 1, wherein the drawing device in the step 2) draws the drawn copper bar at a speed of 100 to 120mm per minute.
3. The process for producing copper bars as claimed in claim 2, wherein the diameter of the up-drawing copper bars in step 2) is 30mm, the tolerance of the diameter of the up-drawing copper bars is less than ± 0.1mm, and the pitch of the up-drawing copper bars is 3 to 3.8 mm.
4. The process for producing a copper bar as set forth in claim 1, wherein in said step 4), the die angle of the rolling die in the rolling is in the range of 5 ° to 15 °.
5. The process for producing a copper bar as claimed in claim 1, 2, 3 or 4, wherein the cooling liquid spraying mechanism further comprises a fixed reflection assembly, the fixed reflection assembly comprises a fixed bar and three arc-shaped reflection plates connected with the fixed bar, and the normals of the arc-shaped reflection plates at least partially point to the cleaning window for reflecting the cooling liquid into the cleaning window.
6. The process for producing a copper bar as claimed in claim 5, wherein the three arc-shaped reflecting plates are connected in sequence by connecting blocks, wherein the middle arc-shaped reflecting plate is directly connected with the top end of the fixing bar.
CN201911053200.2A 2019-10-31 2019-10-31 Production process of copper rod Active CN110756614B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201911053200.2A CN110756614B (en) 2019-10-31 2019-10-31 Production process of copper rod
CN202011561965.XA CN112828067B (en) 2019-10-31 2019-10-31 Rolling unit for producing copper rod

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Application Number Priority Date Filing Date Title
CN201911053200.2A CN110756614B (en) 2019-10-31 2019-10-31 Production process of copper rod

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CN110756614B true CN110756614B (en) 2021-03-02

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CN112828067B (en) 2022-11-15
CN112828067A (en) 2021-05-25

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