CN117732896A - Production process of oxygen-free copper special-shaped wire - Google Patents
Production process of oxygen-free copper special-shaped wire Download PDFInfo
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- CN117732896A CN117732896A CN202410066637.4A CN202410066637A CN117732896A CN 117732896 A CN117732896 A CN 117732896A CN 202410066637 A CN202410066637 A CN 202410066637A CN 117732896 A CN117732896 A CN 117732896A
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- free copper
- oxygen
- special
- wire
- shaped
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 53
- 239000010949 copper Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000000137 annealing Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000005498 polishing Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 5
- 238000005491 wire drawing Methods 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000006748 scratching Methods 0.000 abstract description 3
- 230000002393 scratching effect Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000000704 physical effect Effects 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002113 nanodiamond Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Metal Extraction Processes (AREA)
Abstract
The invention discloses an oxygen-free copper special-shaped wire production process, which comprises the following steps of: (1) Stretching and peeling the high-purity oxygen-free copper round wire blank to obtain a first wire blank; (2) And processing the first wire blank through a combined special-shaped copper material production device to obtain the oxygen-free copper special-shaped wire rod, wherein the processing comprises flattening, multimode stretching, online annealing, finish drawing and polishing which are sequentially carried out. The invention adopts the special-shaped copper product production line with the combination of stretching, reducing, flattening, multimode stretching, on-line annealing, finish drawing, polishing and precise collecting and discharging, and as a plurality of working procedures are completed in one production line, the surface defects of collision, scratching and the like of products are avoided, the consistency of the physical properties of all products can be ensured, the difference of the product properties caused by annealing reasons of different batches of products is reduced, thus stable production technology is obtained, and the yield is greatly improved.
Description
Technical Field
The invention relates to the technical field of oxygen-free copper preparation, in particular to a production process of an oxygen-free copper special-shaped wire.
Background
In recent years, due to the rapid development of industries such as energy conservation and new energy automobiles, the new energy battery and energy storage battery industries which are key core components of the new energy automobiles and energy storage batteries also represent explosive development situations, and industrial chain production matching systems related to the new energy batteries are gradually perfected, the new energy battery components have higher technical requirements and processing requirements for new material applications such as required copper materials, aluminum materials and the like, copper consumption is continuously and rapidly increased, matching requirements are increased in multiple levels since 2021, and matching pressures of related processors are always in a tension state. The technology is continuously upgraded, the processing technology is always in a continuous improvement lifting channel, the required copper material is gradually lifted to TU1 material from common T2 copper material, and the processing requirement and the whole quality of the copper material are improved to a new height.
In the prior art, the product is required to adopt a multi-die continuous rapid cold stamping forming and ceramic welding process, copper raw materials are TU1 materials, different-property appearance designs are required to be provided with high purity, high conductivity and vacuum hydrogen embrittlement environment, the welding is carried out in a brazing furnace at high temperature of 860 ℃ for 20 minutes, heat preservation is not foamed, copper wires are required to be provided with different-property arc-shaped edge flat wires, the materials are required to be continuously subjected to die passing for more than 8 times, slight scratches, lines, peeling, scraps and chromatic aberration are not allowed to exist in the appearance, the hardness range is 76-85HV, and the wire coil is tightly and uniformly wound and has no requirement of undulating bending. However, the existing high-purity oxygen-free copper special-shaped wire processing flow needs multiple times of processing to obtain a finished product meeting technical requirements, and the multiple times of processing need offline transferring of blanks, so that the processing cost is high, and the probability of damaging and scratching the surface of the product and influencing the appearance of the product is easily increased in the transferring and stretching processes of the blanks. The problem of adhesion between wire blanks easily occurs during vacuum annealing, so that the surface spots and peeling defects of the wire blanks influence the appearance of products, and the requirements of the appearance and the performance of the products cannot be met.
Therefore, in order to solve the above problems in the prior art, it is an urgent need in the art to provide a stable and high-yield process.
Disclosure of Invention
In order to solve the problems, the invention provides an oxygen-free copper special-shaped wire production process.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an oxygen-free copper special-shaped wire production process comprises the following steps:
(1) Stretching and peeling the high-purity oxygen-free copper round wire blank to obtain a first wire blank;
(2) And processing the first wire blank through a combined special-shaped copper material production device to obtain the oxygen-free copper special-shaped wire rod, wherein the processing comprises flattening, multimode stretching, online annealing, finish drawing and polishing which are sequentially carried out.
Preferably, in the step (1), the high-purity oxygen-free copper round wire blank is a phi 15mm TU1 round wire blank.
Preferably, the high-purity oxygen-free copper round wire blank in the step (1) is prepared by vacuum intermediate frequency induction casting, heating extrusion and butt welding in sequence.
Preferably, the butt welding method comprises the following steps: and respectively polishing the head and the tail of the round wire blank, then placing the head of one round wire blank and the tail of the other round wire blank into a butt welding machine die, aligning and tightly attaching to perform upsetting treatment, expanding the surface area connected by the round wire blank so as to generate new combination among atoms, and stretching and annealing the round wire blanks connected after upsetting treatment so as to realize room-temperature welding of the high-purity oxygen-free copper wire.
Preferably, the upsetting treatment is carried out under the pressure of 10-20Mpa and repeated 3-5 times; the annealing voltage was 10-11V and the power was set at 300W.
The room temperature welding method is adopted, the welding point structure is compact, the tensile strength reaches 380Mpa, no orange peel, crack and fracture phenomenon is found in the multi-pass tensile test, the head making times in the production process are reduced, the yield is improved by more than 20%, and the production efficiency of each process of stretching is greatly improved.
Preferably, in the step (1), the drawing is performed by using a wire drawing machine, and the peeling is performed by using a peeling die.
Preferably, the combined special-shaped copper product production device in the step (2) sequentially comprises: the device comprises a double-wheel rounding device, a flattening machine, a first double-wheel flattening device, a second double-wheel flattening device, a third double-wheel flattening device, an online annealing device, a cooling water tank, a finished product flattening device, a brush rod machine, a traction machine and a finished product wire collecting machine.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts the special-shaped copper product production line with the combination of stretching, reducing, flattening, multimode stretching, on-line annealing, finish drawing, polishing and precise collecting and discharging, and as a plurality of working procedures are completed in one production line, the surface defects of collision, scratching and the like of products are avoided, the consistency of the physical properties of all products can be ensured, the difference of the product properties caused by annealing reasons of different batches of products is reduced, thus stable production technology is obtained, and the yield is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and the drawings in the description are only embodiments of the present invention.
Fig. 1 is a structural view of the combined special-shaped copper product production device of the invention.
Detailed Description
The following describes embodiments of the invention, examples of which are illustrated in the accompanying drawings, and the embodiments described with reference to the drawings are illustrative and intended to be in the way of explanation of the invention and not to be construed as limiting the invention.
Example 1
The oxygen-free copper special-shaped wire production device shown in fig. 1 comprises the following components in sequence: the device comprises a casting device, an extruder, a butt welding machine, a wire drawing machine, a peeling die, a double-wheel rounding device, a flattening machine, a first double-wheel flattening device, a second double-wheel flattening device, a third double-wheel flattening device, an online annealing device, a cooling water tank, a finished product flattening device, a brush rod machine, a traction machine and a finished product wire collecting machine, wherein other relevant equipment manufacturers except the casting device and the extruder are Shanxi Jia Hao automatic technology limited companies;
the production process of the production device specifically comprises the following steps:
(1) Vacuum medium-frequency induction casting is adopted to produce C10100 cast ingots (phi 260 mm) with uniform tissues and excellent performances, and then double-root extrusion and butt welding are carried out to obtain round wire blanks of the high-purity oxygen-free copper disc with the weight of more than 230kg and the phi 15 mm; wherein butt welding is as follows: cutting the head and tail of a high-purity oxygen-free copper round wire blank produced by a phi 15mm horizontal extruder respectively to smooth the surfaces of the high-purity oxygen-free copper round wire blank, putting the head of one high-purity oxygen-free copper round wire blank and the tail of the other high-purity oxygen-free copper round wire blank into a cold welding machine die, aligning and tightly pasting, upsetting the high-purity oxygen-free copper round wire blank by a butt welding machine, setting the upsetting pressure to be 19Mpa, repeating upsetting for 3 times, expanding the surface area of connection of the two high-purity oxygen-free copper round wire blanks to generate new atoms, stretching the high-purity oxygen-free copper round wire blank connected after upsetting by a wire drawing machine under the action of a stretching die to obtain a phi 15mm wire blank, annealing the wire blank by a annealing machine, setting the voltage of the annealing machine to be 11V and the power to be 300W, thereby realizing the room-temperature welding of the high-purity oxygen-free copper wire, and obtaining a tensile strength test result of 376Mpa;
stretching and reducing: using a drawing machine to draw a die under the action of drawing force, and obtaining a product with the same shape as a die hole with the size phi 13mm by using a high-purity oxygen-free copper disc round wire blank through the die, wherein the length is 196m, the section of the product is reduced, and the process is plastic deformation with the length increased;
peeling: in order to improve the surface quality of the product, when the surface of the product is defective after the diameter is reduced, removing the defect on the surface of the product through a peeling die;
(2) Transferring the peeled wire blank to a combined special-shaped copper product production line for processing (related equipment operates according to related parameters of a specification), and specifically comprises the following steps:
rounding by using a double-wheel rounding device, and rounding the peeled round wire blank for standby;
flattening, namely flattening the round wire blank to a required machining size R5.65X10.3 mm by using a flattening machine under the action of external force;
multimode stretching, namely stretching the round wire blank from R5.65X10.3 mm to R5.02X10.02 mm by a double-wheel flattening device;
on-line annealing, setting annealing current, voltage and speed through an annealing machine, and realizing simultaneous stretching and annealing of the product so as to meet the Vickers hardness requirement of the product;
finish drawing, namely carrying out the last process by using a nano diamond crystal polymer material stretching die, and further eliminating the surface defects of the product;
polishing, namely polishing defects such as oxide skin and the like on the surface of a product by using a polishing machine to produce a qualified 4.75X9.75 mm flat round angle high-purity oxygen-free copper profile;
and packaging the finished product, namely packaging the finished product by using the silk-sandwiched crepe paper and the pvc winding film, and finally stacking the finished product by using a wood tray for packaging and warehousing.
The invention is convenient to regulate and control by each pass size, annealing current, annealing voltage, wire diameter setting, annealing setting, speed setting, slip setting and wire winding length weight, and verifies according to trial production data, the tensile strength of the product is about 220Mpa, the elongation is 50%, the yield strength is about 175Mpa, the Vickers hardness is 80-83 HV, and the invention completely meets the requirements. Therefore, the stable production process is obtained, and the yield is improved to 91.4 percent from 64.7 percent of the original (phi 15mm high-purity oxygen-free copper disc round wire blank, online butt welding and stretching, wire blank stretching, diameter adjustment and peeling through an inverted wire drawing machine, wire blank multi-pass stretching, online annealing, finish drawing and packaging).
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The oxygen-free copper special-shaped wire production process is characterized by comprising the following steps of:
(1) Stretching and peeling the high-purity oxygen-free copper round wire blank to obtain a first wire blank;
(2) And processing the first wire blank through a combined special-shaped copper material production device to obtain the oxygen-free copper special-shaped wire rod, wherein the processing comprises flattening, multimode stretching, online annealing, finish drawing and polishing which are sequentially carried out.
2. The process for producing the oxygen-free copper special-shaped wire rod according to claim 1, wherein the high-purity oxygen-free copper round wire rod in the step (1) is a phi 15mm TU1 round wire rod.
3. The process for producing the oxygen-free copper special-shaped wire rod according to claim 1, wherein the high-purity oxygen-free copper round wire rod blank in the step (1) is prepared by vacuum intermediate frequency induction casting, heating extrusion and butt welding in sequence.
4. The oxygen-free copper special-shaped wire production process according to claim 3, wherein the butt welding method comprises the following steps: and respectively polishing the head and the tail of the round wire blank, then placing the head of one round wire blank and the tail of the other round wire blank into a butt welding machine die, aligning and tightly attaching to perform upsetting treatment, expanding the surface area connected by the round wire blank so as to generate new combination among atoms, and stretching and annealing the round wire blanks connected after upsetting treatment so as to realize room-temperature welding of the high-purity oxygen-free copper wire.
5. The oxygen-free copper special-shaped wire production process according to claim 4, wherein the upsetting treatment is performed at a pressure of 10-20Mpa and repeated 3-5 times; the annealing voltage was 10-11V and the power was set at 300W.
6. The process for producing the oxygen-free copper special-shaped wire rod according to claim 1, wherein in the step (1), a wire drawing machine is adopted for stretching, and a peeling die is adopted for peeling.
7. The oxygen-free copper special-shaped wire production process according to claim 1, wherein the combined special-shaped copper production device in the step (2) sequentially comprises: the device comprises a double-wheel rounding device, a flattening machine, a first double-wheel flattening device, a second double-wheel flattening device, a third double-wheel flattening device, an online annealing device, a cooling water tank, a finished product flattening device, a brush rod machine, a traction machine and a finished product wire collecting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410066637.4A CN117732896A (en) | 2024-01-17 | 2024-01-17 | Production process of oxygen-free copper special-shaped wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410066637.4A CN117732896A (en) | 2024-01-17 | 2024-01-17 | Production process of oxygen-free copper special-shaped wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117732896A true CN117732896A (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410066637.4A Pending CN117732896A (en) | 2024-01-17 | 2024-01-17 | Production process of oxygen-free copper special-shaped wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117732896A (en) |
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2024
- 2024-01-17 CN CN202410066637.4A patent/CN117732896A/en active Pending
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