CN113560358B - Production method of clad copper-clad steel - Google Patents
Production method of clad copper-clad steel Download PDFInfo
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- CN113560358B CN113560358B CN202110730798.5A CN202110730798A CN113560358B CN 113560358 B CN113560358 B CN 113560358B CN 202110730798 A CN202110730798 A CN 202110730798A CN 113560358 B CN113560358 B CN 113560358B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 101
- 239000010959 steel Substances 0.000 title claims abstract description 101
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 45
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229910052802 copper Inorganic materials 0.000 claims abstract description 62
- 239000010949 copper Substances 0.000 claims abstract description 62
- 238000000034 method Methods 0.000 claims abstract description 43
- 238000000137 annealing Methods 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000005253 cladding Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000009987 spinning Methods 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 238000009749 continuous casting Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 abstract description 17
- 239000011248 coating agent Substances 0.000 abstract description 11
- 239000002994 raw material Substances 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 238000002161 passivation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005491 wire drawing Methods 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
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/20—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes from stock of essentially unlimited length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
- B21B37/76—Cooling control on the run-out table
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention relates to a production method of clad copper-clad steel, which comprises the following production processes: cleaning, drying, coating and welding the wire rod to prepare a coated copper-clad steel wire rod, and then drawing, annealing, surface passivating and taking up the wire rod to prepare a coated copper-clad steel finished product; wherein the drawing process adopts a continuous drawing mode, and has a diameter of
The coated copper-clad steel wire rod is pulled to the diameter of
Description
Technical Field
The invention relates to the technical field of production of clad copper clad steel wires, in particular to a copper clad steel wire
A method for producing cladding copper-clad steel by specification wire rods.
Background
The copper-clad steel is a copper-clad steel wire, namely a composite wire with a copper layer wrapped on the periphery of the steel wire. In the field of communication and telecommunication, the copper-clad steel wire integrates the tensile strength and toughness of steel (2 times of that of a pure copper wire), the conductivity and high-frequency characteristics of copper, has light weight (12 percent lighter than the pure copper wire), no creep, can withstand the attack of wind, snow and ice buds, can withstand large-span, salt mist and easily-corrosive environment, can reduce the distortion and distortion of transmitted information, improves the transmission quality, simultaneously has the advantages of saving copper materials, reducing cost and the like, and is an ideal substitute of a pure copper wire product. The copper clad steel wire is widely applied to core wires of parallel twin-core telephone user communication, connectors of various electronic components, core wires of military covered wires, overhead wires of power transmission and telephone lines, overhead wires of electrified railways and electrified light rail contact networks, braided shield wires of power cables, copper clad steel stranded wire carrier cables and suspension strings, grounding rods in the power industry and the like.
In recent years, with the continuous development of the communication industry and the electronic information industry, the application field of copper clad steel wire products is continuously expanded, and higher requirements on the performance of the products are provided. The coated copper-clad steel is mainly applied to the fields of high precision end and high conductivity such as coaxial cables, security wires and the like, and the production process of the conventional copper-clad steel wire comprises the following steps: wire rod-drawing-annealing-copper plating-finished copper-clad steel wire. The clad copper-clad steel is produced by adopting the process of conductive steel wire rod-clad copper-drawing, in order to ensure the drawing performance and the service performance of the wire rod, the extremely strict requirements on each index of the wire rod are provided, and the control difficulty of the production process is very large.
The Chinese patent with the publication number CN102268595B discloses a steel for copper-clad steel and a production method thereof, which only relates to a production method of a copper-clad steel wire rod, but not to a production process of cladding copper-clad steel; the Chinese patent application with the publication number of CN109433835A discloses a production method of a large-size stranded wire electroplated copper-clad steel wire, which is completely different from the production process of the coated copper-clad steel wire and does not relate to the production process of a wire rod; chinese patent application No. CN109396200A discloses "a production process for pre-treating large-sized steel wires for cladding copper-clad steel", which only relates to a pre-treatment process for producing copper-clad steel wires by using conductive steel wire rods as raw materials, and does not relate to a production process for cladding copper and subsequent cladding copper-clad steel; the Chinese patent with the publication number of CN103531301B discloses a process for producing a soft copper-clad steel wire by adopting a welding cladding method, and the Chinese patent application with the publication number of CN109290388A discloses a continuous cladding rolling production process for a copper-clad steel wire, wherein pre-drawing, cladding copper plus (rolling) and drawing processes are adopted to produce cladding copper-clad steel, and more than two times of annealing treatment are needed in the middle, the process is complex, and the production cost is increased.
Disclosure of Invention
The invention provides a production method of clad copper-clad steel, which adopts a conductive steel wire rod as a raw material to directly clad copper, then draws the steel wire rod into a steel wire with finished specification, meets various index requirements of the clad copper-clad steel by controlling the structural property uniformity, the drawability and the electric conductivity of the wire rod, and only needs one-time annealing, thereby omitting the pre-drawing process, realizing the process reduction, saving energy, reducing consumption and reducing the processing cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production method of clad copper-clad steel comprises the following production processes: cleaning, drying, cladding and welding the wire rod to prepare a clad copper-clad steel wire rod, and then drawing, annealing, surface passivating and taking up the wire rod to prepare a clad copper-clad steel finished product; wherein the drawing process adopts a continuous drawing mode, and has a diameter of
The coated copper-clad steel wire rod is directly pulled to the diameter of
Then carrying out primary annealing and drawing to the diameter of a finished product; the first drawing pass adopts a large compression ratio of more than 25 percent to carry out drawing, and the single-pass compression ratio of the subsequent passes is 15 to 20 percent; the annealing process specifically comprises the following steps: addingThe heating temperature is 840 +/-10 ℃, the heating time is more than 2 hours, and the furnace cooling is carried out after the heat preservation is carried out for more than 4 hours.
The wire rod comprises the following chemical components in percentage by mass: less than or equal to 0.010 percent of C, less than or equal to 0.010 percent of Si, less than or equal to 0.20 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, less than or equal to 0.015 percent of Al, less than or equal to 0.0050 percent of N, and the balance of Fe and inevitable impurities.
The production process of the wire rod comprises the following steps:
1) Cutting the plate blank after smelting and continuous casting into square blanks;
2) Heating to 1050-1150 ℃, and descaling the surface under the descaling pressure of more than 20 MPa;
3) Rolling; the temperature is 840 ℃ to 940 ℃ when the steel is finish rolled; the spinning temperature is controlled to be 860 to 930 ℃;
4) Cooling the wire rod: cooling the wire rod after spinning on an air cooling roller way, closing a heat preservation cover, closing a fan, and enabling the speed of the roller way to be 0.2-0.4 m/s;
the dimensional accuracy of the wire rod is required to be more than grade C, the diameter deviation is within +/-0.25 mm, and the out-of-roundness is less than or equal to 0.24mm; the tensile strength of the wire rod is less than or equal to 300MPa, and the grain size is more than 6 grade.
The production method of the clad copper-clad steel comprises 2 procedures of acid washing and water washing.
The cladding welding process specifically comprises the following steps: polishing the wire rod, and cleaning the copper strip; at room temperature, winding the copper strip by using a covering machine, then covering the copper strip on the outer layer of the wire rod, and then welding the open end of the copper strip to prepare a covered copper-clad steel wire rod; the thickness of the copper strip is 1-1.5 mm, and the purity is more than 99.99%.
The conductivity of the clad copper-clad steel finished product is 25-45%.
The diameter of the clad copper clad steel finished product is
Compared with the prior art, the invention has the beneficial effects that:
1) When the conventional coated copper-clad steel is produced at present, the following steps are generally adopted: the production process of pre-drawing raw materials, coating copper and drawing needs more than two times of annealing in the middle; according to the invention, the conductive steel wire rod is used as a raw material, and the pre-drawing process before copper cladding is omitted by strictly controlling the dimensional precision of the wire rod, so that the wire rod can be directly clad with copper;
2) The middle annealing is only carried out once, thereby realizing the reduction of the working procedures and reducing the production and processing cost;
3) The cold process is adopted for coating, so that annealing passes are reduced, the pre-drawing process is omitted, the process is simpler, the operating efficiency is higher, and the purposes of improving productivity, saving energy and reducing consumption are achieved;
4) Compared with a copper plating production process, the copper coating process is more environment-friendly, the copper strip is uniform in thickness, so that the product quality and the electric conductivity are more stable, and the problem of non-uniform copper plating layer of the steel wire in the copper plating process is solved;
5) The coated copper-clad steel produced by the method has good uniformity of structure performance, good steel wire drawing performance and excellent conductivity, and meets the requirements of various indexes of the coated copper-clad steel.
Detailed Description
The invention relates to a production method of clad copper-clad steel, which comprises the following production processes: cleaning, drying, coating and welding the wire rod to prepare a coated copper-clad steel wire rod, and then drawing, annealing, surface passivating and taking up the wire rod to prepare a coated copper-clad steel finished product; wherein the drawing process adopts a continuous drawing mode, and has a diameter of
The coated copper-clad steel wire rod is directly pulled to the diameter of
Then carrying out primary annealing and drawing to reach the diameter of a finished product; the drawing is carried out in the first pass by adopting a large compression ratio of more than 25 percent, and the single-pass compression ratio of the subsequent pass is 15 to 20 percent; the annealing process specifically comprises the following steps: heating at 840 +/-10 deg.C for more than 2 hr, holding for more than 4 hr, and cooling in furnace.
The wire rod comprises the following chemical components in percentage by mass: less than or equal to 0.010 percent of C, less than or equal to 0.010 percent of Si, less than or equal to 0.20 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, less than or equal to 0.015 percent of Al, less than or equal to 0.0050 percent of N, and the balance of Fe and inevitable impurities.
The production process of the wire rod comprises the following steps:
1) Cutting the plate blank after smelting and continuous casting into square blanks;
2) Heating to 1050-1150 deg.c and descaling in the pressure over 20 MPa;
3) Rolling; the temperature in finish rolling is 840-940 ℃; controlling the spinning temperature at 860-930 ℃;
4) Cooling the wire rod: cooling the wire rod after spinning on an air cooling roller way, closing a heat preservation cover, closing a fan, and enabling the speed of the roller way to be 0.2-0.4 m/s;
the dimensional accuracy of the wire rod is required to be more than grade C, the diameter deviation is within +/-0.25 mm, and the out-of-roundness is less than or equal to 0.24mm; the tensile strength of the wire rod is less than or equal to 300MPa, and the grain size is more than 6 grade.
The production method of the clad copper-clad steel comprises 2 procedures of acid washing and water washing.
The cladding welding process specifically comprises the following steps: polishing the wire rod, and cleaning the copper strip; at room temperature, winding the copper strip by using a covering machine, then covering the copper strip on the outer layer of the wire rod, and then welding the open end of the copper strip to prepare a covered copper-clad steel wire rod; the thickness of the copper strip is 1-1.5 mm, and the purity is more than 99.99%.
The conductivity of the clad copper-clad steel finished product is 25-45%.
The diameter of the clad copper clad steel finished product is
Compared with the production method of copper-clad steel wires by adopting an electroplating process, the production method of the copper-clad steel wires has the advantages that the copper-clad process is more environment-friendly, high-conductivity products can be produced, the thickness of copper strips is more uniform, the product quality and the conductivity are more stable, and the problem of non-uniform thickness of copper-clad layers of the copper-clad steel wires produced by the copper-clad process is solved. Compared with the traditional coating process, the coating process disclosed by the invention adopts a cold process for coating, so that the energy is saved and the consumption is reduced. In addition, the invention adopts the production of the cladding copper and the drawing process, saves the pre-drawing process before cladding the copper by controlling the dimensional accuracy of the wire rod, has fewer drawing passes and simpler operation, improves the operation efficiency and the productivity, and saves energy and reduces consumption at the same time.
The invention realizes the process reduction, and compared with other conventional copper coating processes, the intermediate annealing process is only carried out once, so that 1 annealing procedure is saved, and the processing cost is reduced.
The electric conductivity of the clad copper-clad steel produced by the method is 25-45%, and the use requirement of the product can be well met.
The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples.
[ example 1 ] A method for producing a polycarbonate
In the embodiment, the diameter of the wire rod for producing the clad copper-clad steel is as follows
The production process of the wire rod comprises the following steps: cutting the continuous casting plate blank into square blanks, wherein the heating temperature of a wire rod is 1100 ℃, the descaling pressure is 20MPa, the finish rolling temperature is 850 ℃, the spinning temperature is 890 ℃, the wire rods are cooled on an air-cooled roller way after spinning, a heat-insulating cover and a fan are all closed, and the speed of the roller way is 0.2m/s.
The production process of the clad copper-clad steel comprises the following steps:
1) Pickling to remove the iron scale on the surface of the wire rod;
2) Washing with water to remove acid liquor on the surface of the wire rod in the previous working procedure;
3) Drying to remove residual water on the surface of the wire rod, and preparing for the next copper coating process;
4) A cladding welding process; polishing the wire rod, cleaning the copper strip, removing oil stains and dust on the surfaces of the wire rod and the copper strip, and increasing the binding force between the wire rod and the copper strip; at room temperature, winding and coating the copper strip on the outer layer of the wire rod by using a coating machine, and then welding the open end of the copper strip to prepare the coated copper-coated steel wire rod, wherein the thickness of the used copper strip is 1mm, and the purity of the copper strip is 99.99%;
5) Adopting a continuous drawing mode to form a tube with a diameter of
The coated copper-clad steel wire rod is pulled to
According to the specification, primary annealing treatment is carried out in the middle, the heating temperature is 830 ℃, the heating time is 2 hours, the heat preservation time is 4 hours, and then the annealing furnace is cooled.
The first drawing pass adopts a large compression ratio of 25% to perform drawing so as to achieve a better coating effect, and the subsequent passes adopt a medium compression ratio of 15% -20% of a single pass to perform drawing;
6) Surface passivation treatment; carrying out surface passivation treatment on the drawn steel wire to prevent the surface of the steel wire from being oxidized;
7) Taking up; and (5) taking up the steel wire and packaging.
The tensile strength of the wire rod produced by the embodiment is 280MPa, the reduction of area is 90%, the conductivity of the wire rod is 16.6%, and the grain size of the wire rod is 6.5 grade. The electric conductivity of the produced coated copper-clad steel is 35%, and the technical requirements of users on the coated copper-clad steel are well met.
[ example 2 ]
In this example, the diameter of the wire rod used for producing the clad copper clad steel is specified as
The production process of the wire rod comprises the following steps: cutting a continuous casting plate blank into a square blank, wherein the heating temperature of a wire rod is 1080 ℃, the descaling pressure is 21MPa, the finish rolling temperature is 900 ℃, the spinning temperature is 900 ℃, a wire rod is cooled on an air-cooled roller way after spinning, a heat-insulating cover and a fan are all closed, and the speed of the roller way is 0.3m/s.
The production process of the clad copper-clad steel comprises the following steps:
1) Pickling to remove the iron scale on the surface of the wire rod;
2) Washing with water to remove acid liquor on the surface of the wire rod in the previous working procedure;
3) Drying to remove residual water on the surface of the wire rod, and preparing for the next copper coating process;
4) Cladding welding process; polishing the wire rod, cleaning the copper strip, removing oil stains and dust on the surfaces of the wire rod and the copper strip, and increasing the binding force between the wire rod and the copper strip; at room temperature, winding and coating the copper strip on the outer layer of the wire rod by using a coating machine, and then welding the open end of the copper strip to prepare the coated copper-coated steel wire rod, wherein the thickness of the used copper strip is 1.5mm, and the purity of the copper strip is 99.99%;
5) Adopting a continuous drawing mode to form a tube with a diameter of
The coated copper clad steel wire rod is pulled to
According to the specification, primary annealing treatment is carried out in the middle, the heating temperature during annealing is 850 ℃, the heating time is 2 hours, the heat preservation time is 4 hours, and then furnace cooling is carried out.
The first drawing pass adopts a large compression ratio of 25% to perform drawing so as to achieve a better coating effect, and the subsequent passes adopt a medium compression ratio of 15% -20% of a single pass to perform drawing;
6) Surface passivation treatment; carrying out surface passivation treatment on the drawn steel wire to prevent the surface of the steel wire from being oxidized;
7) Taking up; and (5) taking up the steel wire and packaging.
The tensile strength of the wire rod produced in the embodiment is 285MPa, the reduction of area is 92%, the conductivity of the wire rod is 16.8%, and the grain size of the wire rod is 6 grades. The conductivity of the produced coated copper-clad steel is 38%, and the technical requirements of users on the coated copper-clad steel are well met.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A production method of clad copper-clad steel is characterized by comprising the following production processes: cleaning, drying, cladding and welding the wire rod to prepare a clad copper-clad steel wire rod, and then drawing, annealing, surface passivating and taking up the wire rod to prepare a clad copper-clad steel finished product; wherein the drawing process adopts a continuous drawing mode, and has a diameter of
The coated copper-clad steel wire rod is pulled to the diameter of
Then carrying out primary annealing and drawing to the diameter of a finished product; the first drawing pass adopts a large compression ratio of more than 25 percent to carry out drawing, and the single-pass compression ratio of the subsequent passes is 15 to 20 percent; the annealing process specifically comprises the following steps: heating at 840 +/-10 deg.C for more than 2h, maintaining the temperature for more than 4h, and cooling in furnace;
the production process of the wire rod comprises the following steps:
1) Cutting the plate blank after smelting and continuous casting into a square blank;
2) Heating to 1050-1150 deg.c and descaling in the pressure over 20 MPa;
3) Rolling; the temperature is 840 ℃ to 940 ℃ when the steel is finish rolled; controlling the spinning temperature at 860-930 ℃;
4) Cooling the wire rod: cooling the wire rod after spinning on an air cooling roller way, closing a heat preservation cover, closing a fan, and enabling the speed of the roller way to be 0.2-0.4 m/s;
the dimensional accuracy of the wire rod is required to be more than grade C, the diameter deviation is within +/-0.25 mm, and the out-of-roundness is less than or equal to 0.24mm; the tensile strength of the wire rod is less than or equal to 300MPa, and the grain size is more than 6 grade;
the cladding welding process specifically comprises the following steps: polishing the wire rod, and cleaning the copper strip; at room temperature, winding the copper strip by using a covering machine, then covering the copper strip on the outer layer of the wire rod, and then welding the open end of the copper strip to prepare a covered copper-clad steel wire rod; the thickness of the copper strip is 1-1.5 mm, and the purity is more than 99.99%.
2. The production method of the clad copper-clad steel according to claim 1, wherein the wire rod comprises the following chemical components in percentage by mass: less than or equal to 0.010 percent of C, less than or equal to 0.010 percent of Si, less than or equal to 0.20 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, less than or equal to 0.015 percent of Al, less than or equal to 0.0050 percent of N, and the balance of Fe and inevitable impurities.
3. The method for producing the clad copper-clad steel according to claim 1, wherein the cleaning comprises 2 processes of pickling and water washing.
4. The method for producing the clad copper-clad steel according to claim 1, wherein the electric conductivity of the finished clad copper-clad steel product is 25-45%.
5. The method for producing clad copper-clad steel according to claim 1, wherein the diameter of the finished clad copper-clad steel product is
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| CN114082796B (en) * | 2021-11-22 | 2024-09-24 | 国网浙江省电力有限公司电力科学研究院 | Hot-melt continuous casting copper-clad steel material and processing method thereof |
| CN116043094B (en) * | 2023-01-09 | 2024-09-13 | 鞍钢股份有限公司 | Copper-clad steel wire manufacturing method for improving heat treatment performance of intermediate wire |
| CN116445809A (en) * | 2023-02-27 | 2023-07-18 | 武汉钢铁有限公司 | High-conductivity steel for new energy automobile charging pile lead wire and production method |
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| US3455016A (en) * | 1967-04-26 | 1969-07-15 | Texas Instruments Inc | Manufacture of clad wire and the like |
| JPS52147784A (en) * | 1976-06-02 | 1977-12-08 | Sumitomo Electric Ind Ltd | Method of manufacturing composite wires |
| CN101992224A (en) * | 2009-08-13 | 2011-03-30 | 大连通大设备技术开发有限公司 | Production process of clad steel wire rod with steel core wire of dual phase structure |
| CN101763916B (en) * | 2009-12-30 | 2011-08-03 | 甘肃天拓冶金科技有限公司 | Production method for copper-clad steel double-metal wire |
| CN107675068A (en) * | 2017-09-27 | 2018-02-09 | 武汉钢铁有限公司 | The production method of superfine welding wire steel wire rod |
| CN110004376B (en) * | 2019-04-16 | 2020-11-13 | 江阴兴澄合金材料有限公司 | Manufacturing method of medium-carbon CrMo steel wire rod free of annealing and drawing |
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