CN113083891A - Copper strip rolling production process flow - Google Patents
Copper strip rolling production process flow Download PDFInfo
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- CN113083891A CN113083891A CN202110332351.2A CN202110332351A CN113083891A CN 113083891 A CN113083891 A CN 113083891A CN 202110332351 A CN202110332351 A CN 202110332351A CN 113083891 A CN113083891 A CN 113083891A
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- Prior art keywords
- rolling
- copper strip
- annealing
- finished product
- process flow
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- 238000005096 rolling process Methods 0.000 title claims abstract description 76
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 67
- 239000010949 copper Substances 0.000 title claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000137 annealing Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000005452 bending Methods 0.000 claims abstract description 10
- 238000003801 milling Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000005098 hot rolling Methods 0.000 claims abstract description 7
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/63—Continuous furnaces for strip or wire the strip being supported by a cushion of gas
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a copper strip rolling production process flow, which comprises twelve steps: 1) smelting, 2) hot rolling, 3) face milling, 4) rough rolling, 5) annealing, 6) cleaning, 7) primary and secondary finish rolling, 8) secondary annealing cleaning, 9) secondary and secondary finish rolling, 10) finish rolling, 11) finished product rolling, and 12) finished product straightening and slitting. According to the copper strip rolling production process flow, the hardness of the copper strip is guaranteed to reach the standard and the strip shape of the copper strip is guaranteed by adopting a mode of reducing the rolling processing rate of a finished product through low-temperature annealing, the steps are implemented strictly according to the requirements of a production scheme in the process, the strip shape performance of the copper strip is improved, the quality of a 0.15SH product is obviously improved after the rolling of the finished product is finished, the stretch bending and correction production is not needed after the edge cutting is firstly carried out in the finished product inspection, the labor and the cost are greatly saved, the hardness performance is controlled within a small interval range of 185-plus-190 through the adjustment of the process and the control of tolerance and the like in the process, the requirements of users on the copper strip performance can be.
Description
Technical Field
The invention relates to a copper strip process, in particular to a copper strip rolling production process flow.
Background
The copper strip is a metal element, mainly used for producing electrical components, lamp holders, battery caps, buttons, sealing elements and connectors, and mainly used as conductive, heat-conductive and corrosion-resistant equipment, in the production process of 0.15 SH-series copper strips, because the copper strip is thinner and has higher hardness requirement, more production rolling passes are required, the plate shape is difficult to control in the rolling process, the strip is easy to break, because the edge part with larger rolling processing rate has poor quality, the plate shape can not be directly corrected in the stretch bending correction, in order to ensure the product quality, the edge part needs to be cut firstly to be subjected to stretch bending correction, the production efficiency is greatly influenced, and the cost is greatly wasted, and the copper strip produced by the method can not meet the requirements of customers with higher requirements on the plate property.
Disclosure of Invention
The invention aims to provide a copper strip rolling production process flow to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a copper strip rolling production process flow comprises the following steps:
1) smelting: adding the raw materials into a melting furnace, heating and melting, and processing into a copper ingot with the thickness of 210cm by a casting machine;
2) hot rolling: putting the copper ingot into a hot rolling mill to be rolled into a strip blank with the thickness of 17 cm;
3) milling a surface: milling the belt blank by a milling machine to remove the belt blank with the thickness of 16cm on the surface layers of the upper surface and the lower surface;
4) rough rolling: rolling a copper strip preliminary form by using a rolling mill, controlling the preset thickness to be 2.0cm, and repeatedly adjusting the roller spacing until the copper strip meeting the thickness standard is rolled;
5) annealing: annealing in a bell-type furnace at 460 ℃ for 5 hours;
6) cleaning: pickling with 10-12% sulfuric acid solution at normal temperature, washing the copper strip after pickling with cold water, heating, drying and winding;
7) primary intermediate precision rolling: rolling the copper strip twice by using a finish rolling mill, and rolling the copper strip from 2.0cm to 0.7cm in thickness;
8) secondary annealing and cleaning: annealing and the same step 5), cleaning by adopting a sulfuric acid solution with the mass concentration of 6-8%, and the other steps are the same as the step 6);
9) secondary medium precision rolling: rolling the copper strip from 0.7cm to 0.4cm in thickness and then annealing in an air cushion furnace;
10) finish rolling: carrying out air cushion furnace annealing after the copper strip is subjected to finish rolling by a finish rolling mill to be 0.25 cm;
11) rolling a finished product: the copper strip is rolled into a finished copper strip of 0.15 cm;
12) and (3) straightening and slitting of finished products: and (3) straightening and cutting the cleaned copper strip in a stretch bending straightening machine, and polishing the surface to be smooth to produce a finished product copper strip.
As a still further scheme of the invention: the temperature of the melting furnace in the step 1) is set to 1090 ℃.
As a still further scheme of the invention: the annealing temperature in the step 5) is 460 ℃ and the continuous annealing time is 5 h.
As a still further scheme of the invention: the annealing speeds of the air cushion furnace in the step 5) and the step 8) are respectively 55-60m/min and 70-75 m/min.
As a still further scheme of the invention: the rolling precision tolerance of the rolling mill is controlled within 0.01 mm, and the time-saving difference is uniform during the speed increasing and reducing operation.
As a still further scheme of the invention: and (12) wiping the roller system before the pulling and straightening processes in the step 12), wherein the control surface is free of defects during pulling and straightening.
As a still further scheme of the invention: the slitting and side bending precision of the finished product in the step 12) is controlled within 1.5mm/m, and the wall hanging warpage is controlled within 50 mm/m.
Compared with the prior art, the invention has the beneficial effects that:
1. by the production process, the quality of the 0.15SH product is obviously improved after the finished product is rolled, and the stretch bending and straightening production is not required to be carried out after the finished product is trimmed, so that the labor and the cost are greatly saved.
2. By reducing the rolling processing rate of the finished product, namely 0.25-0.15, improving the air cushion annealing speed by 70-75m/min and matching with the small-interval range of realizing the plate shape improvement and the hardness performance control of 185-190, the requirements of all users are met, the production efficiency is improved, the cost is saved, the plate shape is obviously improved, and the performance of the copper strip is improved.
3. The hardness performance is controlled within the range of 185-190 cells by adjusting the process and controlling the tolerance and the like in the process, so that the process production and circulation are facilitated.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
a copper strip rolling production process flow comprises the following steps:
1) smelting: adding the raw materials into a melting furnace for heating and melting, wherein the temperature of the melting furnace is set to 1090 ℃, and processing the raw materials into a copper ingot with the thickness of 210cm through a casting machine;
2) hot rolling: putting the copper ingot into a hot rolling mill to be rolled into a strip blank with the thickness of 17 cm;
3) milling a surface: milling the belt blank by a milling machine to remove the belt blank with the thickness of 16cm on the surface layers of the upper surface and the lower surface;
4) rough rolling: rolling a copper strip preliminary form by using a rolling mill, controlling the preset thickness to be 2.0cm, and repeatedly adjusting the roller spacing until the copper strip meeting the thickness standard is rolled;
5) annealing: annealing in a bell-type furnace at 460 ℃ for 5 hours at a continuous annealing time of 5 hours at 460 ℃ and at an annealing speed of 55-60m/min in an air cushion furnace;
6) cleaning: pickling with 10-12% sulfuric acid solution at normal temperature, washing the copper strip after pickling with cold water, heating, drying and winding;
7) primary intermediate precision rolling: rolling the copper strip twice by using a finish rolling mill, and rolling the copper strip from 2.0cm to 0.7cm in thickness;
8) secondary annealing and cleaning: annealing in the same step 5), but the annealing speed of the air cushion furnace is 70-75m/min, cleaning by adopting a sulfuric acid solution with the mass concentration of 6-8%, and the rest in the same step 6);
9) secondary medium precision rolling: rolling the copper strip from 0.7cm to 0.4cm in thickness and then annealing in an air cushion furnace;
10) finish rolling: carrying out air cushion furnace annealing after the copper strip is subjected to finish rolling by a finish rolling mill to be 0.25 cm;
11) rolling a finished product: the copper strip is rolled into a finished copper strip of 0.15cm in a finish rolling way, the rolling precision tolerance of a rolling mill is controlled within 0.01 mm, and the time difference is uniform during the speed increasing and decreasing operation;
12) and (3) straightening and slitting of finished products: and (3) performing tension leveling and slitting on the cleaned copper strip in a tension leveling machine, wiping the roll system before the tension leveling process, controlling the surface to be free of defects during tension leveling, controlling the slitting and side bending precision of a finished product to be within 1.5mm/m, controlling the wall hanging warpage to be within 50mm/m, and polishing the surface to be smooth to produce the finished product copper strip.
The specific rolling parameters are as follows:
the invention has the beneficial effects that: the method for reducing the rolling processing rate of the finished product by adopting low-temperature annealing not only ensures that the hardness of the copper strip reaches the standard, but also ensures the strip shape of the copper strip, the steps are implemented strictly according to the requirements of a production scheme in the process, the strip shape performance of the copper strip is improved, the quality of the 0.15SH product is obviously improved after the rolling of the finished product is finished, the stretch bending and correction production is not needed after the edge cutting is carried out in the finished product inspection, the labor and the cost are greatly saved, the strip shape improvement and the hardness performance control are realized in a small interval range of 185-plus-190 by reducing the rolling processing rate of the finished product, namely 0.25-0.15, and the air cushion annealing speed is improved by 70-75m/min, so that the production efficiency and the cost are improved, the requirements of.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The copper strip rolling production process is characterized by comprising the following steps:
1) smelting: adding the raw materials into a melting furnace, heating and melting, and processing into a copper ingot with the thickness of 210cm by a casting machine;
2) hot rolling: putting the copper ingot into a hot rolling mill to be rolled into a strip blank with the thickness of 17 cm;
3) milling a surface: milling the surface layers of the upper surface and the lower surface of the belt blank by a milling machine to form a thickness of 16 cm;
4) rough rolling: rolling a copper strip preliminary form by using a rolling mill, controlling the preset thickness to be 2.0cm, and repeatedly adjusting the roller spacing until the copper strip meeting the thickness standard is rolled;
5) annealing: annealing in a bell-type furnace at 460 ℃ for 5 hours;
6) cleaning: pickling with 10-12% sulfuric acid solution at normal temperature, washing the copper strip after pickling with cold water, heating, drying and winding;
7) primary intermediate precision rolling: rolling the copper strip twice by using a finish rolling mill, and rolling the copper strip from 2.0cm to 0.7cm in thickness;
8) secondary annealing and cleaning: annealing and the same step 5), cleaning by adopting a sulfuric acid solution with the mass concentration of 6-8%, and the other steps are the same as the step 6);
9) secondary medium precision rolling: rolling the copper strip from 0.7cm to 0.4cm in thickness and then annealing in an air cushion furnace;
10) finish rolling: carrying out air cushion furnace annealing after the copper strip is subjected to finish rolling by a finish rolling mill to be 0.25 cm;
11) rolling a finished product: the copper strip is rolled into a finished copper strip of 0.15 cm;
12) and (3) straightening and slitting of finished products: and (3) straightening and cutting the cleaned copper strip in a stretch bending straightening machine, and polishing the surface to be smooth to produce a finished product copper strip.
2. The process flow for rolling the copper strip according to claim 1, wherein the temperature of the melting furnace in the step 1) is set to 1090 ℃.
3. The copper strip rolling production process flow according to claim 1, wherein the annealing temperature in the step 5) is 460 ℃ and the continuous annealing time is 5 h.
4. The copper strip rolling production process flow according to claim 1, wherein the annealing speeds of the air cushion furnaces in the step 5) and the step 8) are respectively 55-60m/min and 70-75 m/min.
5. The process flow for rolling the copper strip according to claim 1, wherein the rolling precision tolerance of the rolling mill is controlled within 0.01 mm, and the time difference is uniform during the speed increasing and decreasing operation.
6. The process flow for rolling the copper strip according to claim 1, wherein the roll system is wiped before the pulling and straightening process in step 12), and the control surface is free of defects during pulling and straightening.
7. The copper strip rolling production process flow as claimed in claim 1, wherein the precision of slitting and side bending of the finished product in the step 12) is controlled within 1.5mm/m, and the warping of the hanging wall is controlled within 50 mm/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110332351.2A CN113083891A (en) | 2021-03-29 | 2021-03-29 | Copper strip rolling production process flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110332351.2A CN113083891A (en) | 2021-03-29 | 2021-03-29 | Copper strip rolling production process flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113083891A true CN113083891A (en) | 2021-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110332351.2A Pending CN113083891A (en) | 2021-03-29 | 2021-03-29 | Copper strip rolling production process flow |
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| CN (1) | CN113083891A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114682643A (en) * | 2022-04-06 | 2022-07-01 | 安徽众源新材料股份有限公司 | Production process of ultrathin copper strip |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114682643A (en) * | 2022-04-06 | 2022-07-01 | 安徽众源新材料股份有限公司 | Production process of ultrathin copper strip |
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