CN110860855A - High-surface short-flow copper strip production process - Google Patents
High-surface short-flow copper strip production process Download PDFInfo
- Publication number
- CN110860855A CN110860855A CN201911043526.7A CN201911043526A CN110860855A CN 110860855 A CN110860855 A CN 110860855A CN 201911043526 A CN201911043526 A CN 201911043526A CN 110860855 A CN110860855 A CN 110860855A
- Authority
- CN
- China
- Prior art keywords
- copper strip
- copper
- rolling
- strip
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a high-surface short-flow copper strip production process, which comprises the steps of fusion casting → surface milling → rough rolling → thick shearing → medium rolling → finish rolling → loose coil → finished product annealing → finished product cleaning → finished product slitting → packaging and warehousing, wherein crystal grain refiner is added in the process of smelting, and oxygen is discharged at fixed points in time to refine crystal grains on the surface of a casting blank of a pulled copper strip, and a graphite crystallizer is adopted to effectively relieve cracks on the edge of the casting blank by the copper strip; therefore, the original annealing and cleaning procedures are omitted between the rough rolling and the finish rolling of the copper strip casting blank, the processing time is effectively reduced, 24 hours can be shortened, and the production efficiency is improved.
Description
Technical Field
The invention relates to the field of copper strip production, in particular to a high-surface short-process copper strip production process.
Background
Copper and copper alloy plate strips are indispensable basic metal materials in national economic construction, have excellent performances of electric conduction, heat conduction, corrosion resistance, electric connection, electric contact and the like, and are widely applied to various industrial fields such as machinery, electronics, automobiles, electric power, communication, traffic and the like. The middle and low-end products of copper and copper alloy plate strips produced in China are surplus at present, but high-grade products still depend on import, the processing level of the copper plates and strips in China generally lags behind developed countries, and the industrial requirements of rapid development cannot be met.
The existing production process of the semi-hard copper strip is fusion casting → face milling → rough rolling → thick shearing → semi-finished product annealing → semi-finished product cleaning → finish rolling → loose coil → finished product annealing → finished product cleaning → finished product slitting → packaging and warehousing. The production process of the semi-hard copper strip has the defects of long process flow, large occupied space of a workshop, low yield, poor performance, high production energy consumption and the like, and is difficult to meet the requirements of the matching industry in China.
The biggest limitation on the prior art is rough rolling and finish rolling, an annealing process is needed in the middle, otherwise, the copper strip is easy to crack, and the performance is affected. Annealing typically takes 10 hours to work and a cleaning process is required after annealing, greatly increasing the production time of the copper strip.
Disclosure of Invention
The invention aims to provide a high-surface short-process copper strip production process.
In order to achieve the purpose, the invention adopts the technical scheme that: a high-surface short-process copper strip production process is characterized by comprising the following steps:
1) smelting, namely adding electrolytic copper and a grain refiner into a horizontal continuous casting smelting furnace, controlling the smelting temperature at 1150-1200 ℃, melting the electrolytic copper, flowing into a furnace chamber of a heat preservation furnace, and controlling the temperature of the heat preservation furnace at 1180-1250 ℃;
2) casting blanks, wherein copper liquid in a heat preservation furnace flows into a graphite crystallizer die under the action of gravity to form copper blanks, and a copper strip casting blank is drawn out by a dummy ingot machine, wherein the cooling water temperature of the graphite crystallizer is 18-22 ℃, the cooling water pressure is 1.0-1.2Mpa, and the speed of the dummy ingot machine is 100 plus 150 mm/min;
3) milling the upper surface and the lower surface of the copper strip casting blank;
4) rough rolling, namely rough rolling the copper strip casting blank in the step 3) into a copper strip by adopting a four-roller reversible rolling mill group, wherein the rolling schedule is 7 passes, and the average pass processing rate is 34-40%;
5) thick shearing, wherein the two sides of the copper strip after rough rolling are trimmed;
6) intermediate rolling: rolling the copper strip in the step 5) by adopting a four-roller reversible rolling mill group, wherein the rolling schedule is 4 passes, and the average pass processing rate is 25-30%;
7) finish rolling, namely finish rolling the copper strip in the step 6) by adopting a four-roller reversible rolling mill group, wherein the rolling schedule is 4 passes, and the average pass processing rate is 12-15%;
8) loosening, spraying an anti-sticking agent on the rolled copper strip, removing oil, and rewinding the copper strip, wherein the tension is controlled to be 0.40;
9) annealing the finished product, namely putting the copper strip coil in the step 8) into a bell jar type bright annealing furnace for annealing under protective gas, wherein the annealing temperature is 390-;
10) cleaning a finished product, namely degreasing, pickling and passivating the copper strip coil in the step 9);
11) and (3) cutting and warehousing, namely cutting the copper strip coil in the step 10) into strips, cooling to room temperature, packaging and warehousing.
Preferably, the grain refiner in the step 1) is rare earth, and 0.08-0.12kg of rare earth is added per 100kg of electrolytic copper.
Further preferably, 0.12kg of rare earth is added per 100kg of electrolytic copper.
Further preferably, the cuprammonium solution is stirred in the holding furnace of step 1) for 3min every 60min by using a dry long stick.
Preferably, the specification in step 2) is (14-17) mm (300-.
Preferably, the thickness of the copper strip casting blank after rough rolling in the step 4) is 0.64mm, the average pass processing rate is 36.73%, and the roller surface roughness of the roller is 0.5-0.8.
Preferably, the thickness of the copper strip after finish rolling in the step 6) is 0.23mm, the average pass processing rate is 27.14%, and the surface roughness of the roller is 0.2-0.5.
Preferably, the thickness of the copper strip rolled in the step 7) 80 is 0.1mm, the average pass processing rate is 13.59%, and the surface roughness of the roller is 0.1-0.2.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
because the crystal grain refiner is added in the smelting process, and the oxygen is discharged at fixed time and fixed point, the crystal grains on the surface of the pulled copper strip casting blank can be refined, and the graphite crystallizer is adopted, so that the cracks on the edge of the casting blank can be effectively relieved by the copper strip; therefore, the original annealing and cleaning procedures are omitted between the rough rolling and the finish rolling of the copper strip casting blank, the processing time is effectively reduced, 24 hours can be shortened, and the production efficiency is improved.
Drawings
FIG. 1 is a process flow diagram of the high surface short process copper strip production process of the present invention.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings to which:
referring to the attached figure 1, the production process of the high-surface short-flow copper strip is characterized by comprising the following steps:
1) smelting, namely adding electrolytic copper and a grain refiner into a horizontal continuous casting smelting furnace, wherein the grain refiner adopts rare earth (mainly comprising 20: 3: 1 lanthanum, yttrium and cerium), 0.12kg of rare earth is added in every 100kg of electrolytic copper, and 150-180mm of dry charcoal is added as a covering agent at the furnace mouth of a continuous casting smelting furnace. Controlling the smelting temperature of the continuous casting smelting furnace at 1150-1200 ℃, enabling the molten electrolytic copper to flow into the furnace chamber of the heat preservation furnace, controlling the temperature of the heat preservation furnace at 1180-1250 ℃, and adding 180-200mm graphite flakes as covering agents at the furnace mouth of the heat preservation furnace; and the copper water is stirred for 3min by using a long dry stick in the heat preservation furnace every 60min so as to fully exhaust and remove oxygen.
2) And (3) casting blanks, wherein the copper liquid in the heat preservation furnace flows into a graphite crystallizer die under the action of gravity to form copper blanks, and the copper strip casting blanks are drawn out by an ingot starter, wherein the cooling water temperature of the graphite crystallizer is 18-22 ℃, the cooling water pressure is 1.0-1.2Mpa, the speed of the ingot starter is 100 and 150mm/min, and the size of the casting blanks is 430 x 17 mm.
3) And (3) milling, namely performing semi-finish milling on the upper surface and the lower surface of a copper strip casting blank by using a finish end milling machine to remove impurities, pits, cold partitions, hot cracks and oxide skins formed on the surface of the copper strip casting blank in the drawing casting cooling process, wherein the milled casting blank has a smooth and clean surface without defects, the thickness is controlled to be 15.8-16.2mm, and the surface roughness of the casting blank is 1.0-1.5.
4) Rough rolling, namely rolling the copper strip casting blank subjected to surface milling for 7 passes by using a four-roller reversible rough and medium rolling mill, wherein the rolled strip with the thickness of 0.64mm has the average pass processing rate of 36.73%, and the distribution of each pass is as follows:
the first pass, inlet roll gap 16.00mm, outlet roll gap 9.50mm, machining rate 40.63%
The second pass comprises 9.50mm of inlet roll gap, 5.70mm of outlet roll gap and 40.00 percent of processing rate;
the third step is that the inlet roll gap is 5.70mm, the outlet roll gap is 3.45mm, and the processing rate is 39.47 percent;
the fourth pass comprises an inlet roll gap of 3.45mm, an outlet roll gap of 2.15mm and a processing rate of 37.68%;
in the fifth pass, the inlet roll gap is 2.15mm, the outlet roll gap is 1.35mm, and the processing rate is 37.21%;
in the sixth pass, the inlet roll gap is 1.35mm, the outlet roll gap is 0.90mm, and the processing rate is 33.33 percent;
in the seventh pass, the inlet roll gap is 0.90mm, the outlet roll gap is 0.64mm, and the processing rate is 28.88%;
wherein, the support roll ¢ 600 x 550, the working roll ¢ 300 x 550, and the roll surface roughness of the roll is 0.5-0.8.
In the rough rolling procedure, the copper strip can be rolled by 0.64mm in 7 passes by controlling the parameters of each pass, and the processing precision is improved compared with the original process
5) And (4) thick shearing, wherein the two sides of the copper strip after rough rolling are subjected to trimming treatment, the two sides are respectively sheared by 5.0mm, fine cracks on the edges are cut off, and the cutting surface of the whole rolling cutter needs to be neat.
6) Intermediate rolling: the strip after rough rolling and rolling is rolled by a four-roller reversible finishing mill for 4 passes, the rolled strip with the thickness of 0.23mm has the average pass processing rate of 27.14 percent, and the distribution of each pass is as follows:
the first pass is that the inlet roll gap is 0.64mm, the outlet roll gap is 0.45mm, and the processing rate is 29.68 percent;
the second pass is that the inlet roll gap is 0.45mm, the outlet roll gap is 0.32mm, and the processing rate is 28.88%;
the third process is that the gap between the inlet roller and the outlet roller is 0.32mm, the gap between the outlet roller and the outlet roller is 0.24mm, and the processing rate is 25.00 percent;
in the fourth pass, the inlet roll gap is 0.24mm, the outlet roll gap is 0.18mm, and the processing rate is 25.00 percent;
wherein, the support roll ¢ 220 x 500, the working roll ¢ 110 x 500, and the roll surface roughness of the roll is 0.2-0.5.
7) And (3) finish rolling, wherein the strip after finish rolling is rolled by a four-roller reversible finish rolling mill for 4 passes, the rolled strip with the thickness of 0.1mm is rolled, the average pass processing rate is 13.59%, and the distribution of each pass is as follows:
the first time, the inlet roll gap is 0.180mm, the outlet roll gap is 0.150mm, and the processing rate is 16.67%;
the second pass is that the inlet roll gap is 0.150mm, the outlet roll gap is 0.125mm, and the processing rate is 16.67 percent;
the third step is that the gap between the inlet roller and the outlet roller is 0.125mm, the gap between the outlet roller and the outlet roller is 0.110mm, and the processing rate is 12.00 percent;
the fourth pass comprises an inlet roll gap of 0.110mm, an outlet roll gap of 0.100mm and a processing rate of 9.09%;
support roll ¢ 160 x 500, work roll ¢ 80 x 500, roll surface roughness 0.1-0.2.
8) And (3) unwinding, spraying an anti-sticking agent on the rolled copper strip, removing oil, rewinding the copper strip, and controlling the tension to be 0.40 to ensure that the phenomenon of adhesive tape deviation cannot occur during subsequent annealing of the copper strip.
9) And annealing the finished product, namely putting the copper strip coil into a bell jar type bright annealing furnace to perform annealing operation treatment under protective gas, wherein the protective gas is nitrogen with the purity of 99.95 percent, the gas flow is 3 m/h, the annealing temperature is controlled to be 400 ℃, the heating time is controlled to be 4h, the heat preservation time is controlled to be 5h, and the tapping temperature is controlled to be less than 75 ℃.
Putting the copper strip coil in the step 8) into a bell jar type bright annealing furnace for annealing under protective gas, wherein the annealing temperature is 390-410 ℃, the temperature rise time is 2.5-4h, the heat preservation time is 3.5-5h, and the tapping temperature is less than 75 ℃; in the primary annealing treatment, the bell-type bright annealing furnace is adopted, the annealing temperature is reduced by 50 ℃ compared with the original process, the heat preservation time is reduced by 1h, and the nitrogen gas flow is also reduced by 6m m year/h.
10) Cleaning a finished product, namely performing surface treatment such as degreasing, acid washing, passivation and the like on the copper strip coil subjected to annealing treatment by a thin strip cleaning line, removing residual water mark lubricating liquid and oxides on the surface of the annealed copper strip, and performing abrasive treatment by using an imported abrasive brush, wherein the surface of the copper strip is guaranteed to be smooth and clean without any surface defects.
11) And (4) cutting and warehousing, transferring the washed strip into a thin strip slitting machine table, cutting the strip into strips with different specifications by using an inlet cutter and a gasket, wherein the cut surface of the cut strip is flat and has no staggered layer phenomenon, and the width is controlled to be +/-0.01 mm. Cooling to room temperature, placing a drying agent, packaging and warehousing.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
because the crystal grain refiner is added in the smelting process, and the oxygen is discharged at fixed time and fixed point, the crystal grains on the surface of the pulled copper strip casting blank can be refined, and the graphite crystallizer is adopted, so that the cracks on the edge of the casting blank can be effectively relieved by the copper strip; therefore, the original annealing and cleaning procedures are omitted between the rough rolling and the finish rolling of the copper strip casting blank, the processing time is effectively reduced, 24 hours can be shortened, and the production efficiency is improved.
In the embodiment, different rollers of different rolling mills are used, the characteristic of large processing rate of red copper is utilized, the pass processing rate is reasonably distributed, the average processing rate of rough rolling is 36.74%, the average processing rate of a middle finishing mill is 27.14%, the average processing rate of a finishing mill is 13.60%, multiple processing passes are performed, surface grains are more obviously refined, the surface roughness of a strip is smaller, and the roughness of a finished strip can reach 0.1-0.2.
The electric conductivity of the copper strip produced by the process is more than 100lACS, the thickness tolerance is 0.10 +/-0.01 mm, the tensile strength is more than 240Mpa, the elongation is more than 25%, and the performance is greatly improved.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. A high-surface short-process copper strip production process is characterized by comprising the following steps:
1) smelting, namely adding electrolytic copper and a grain refiner into a horizontal continuous casting smelting furnace, controlling the smelting temperature at 1150-1200 ℃, melting the electrolytic copper, flowing into a furnace chamber of a heat preservation furnace, and controlling the temperature of the heat preservation furnace at 1180-1250 ℃;
2) casting blanks, wherein copper liquid in a heat preservation furnace flows into a graphite crystallizer die under the action of gravity to form copper blanks, and a copper strip casting blank is drawn out by a dummy ingot machine, wherein the cooling water temperature of the graphite crystallizer is 18-22 ℃, the cooling water pressure is 1.0-1.2Mpa, and the speed of the dummy ingot machine is 100 plus 150 mm/min;
3) milling the upper surface and the lower surface of the copper strip casting blank;
4) rough rolling, namely rough rolling the copper strip casting blank in the step 3) into a copper strip by adopting a four-roller reversible rolling mill group, wherein the rolling schedule is 7 passes, and the average pass processing rate is 34-40%;
5) thick shearing, wherein the two sides of the copper strip after rough rolling are trimmed;
6) intermediate rolling: rolling the copper strip in the step 5) by adopting a four-roller reversible rolling mill group, wherein the rolling schedule is 4 passes, and the average pass processing rate is 25-30%;
7) finish rolling, namely rolling the copper strip in the step 6) by adopting a four-roller reversible rolling mill, wherein the rolling schedule is 4 passes, and the average pass processing rate is 12-15%;
8) loosening, spraying an anti-sticking agent on the rolled copper strip, removing oil, and rewinding the copper strip, wherein the tension is controlled to be 0.40;
9) annealing the finished product, namely putting the copper strip coil in the step 8) into a bell jar type bright annealing furnace for annealing under protective gas, wherein the annealing temperature is 390-;
10) cleaning a finished product, namely degreasing, pickling and passivating the copper strip coil in the step 9);
11) and (3) cutting and warehousing, namely cutting the copper strip coil in the step 10) into strips, cooling to room temperature, packaging and warehousing.
2. The process of claim 1 for producing a high surface short run copper strip, wherein: the grain refiner in the step 1) is rare earth, and 0.08-0.12kg of rare earth is added into every 100kg of electrolytic copper.
3. The process of claim 2, wherein the copper strip is produced by a high surface short process comprising: 0.12kg of rare earth is added into every 100kg of electrolytic copper.
4. The process of claim 2, wherein the copper strip is produced by a high surface short process comprising: step 1) stirring the copper water for 3min by using a dry long stick in the heat preservation furnace every 60 min.
5. The process of claim 1 for producing a high surface short run copper strip, wherein: the specification in step 2) is (14-17) mm (300-.
6. The process of claim 1 for producing a high surface short run copper strip, wherein: and 4) the thickness of the roughly rolled copper strip casting blank is 0.64mm, the average pass processing rate is 36.73%, and the roller surface roughness of the roller is 0.5-0.8.
7. The process of claim 1 for producing a high surface short run copper strip, wherein: and 6) finishing the strip with the copper strip thickness of 0.23mm, wherein the average pass processing rate is 27.14%, and the roller surface roughness of the roller is 0.2-0.5.
8. The process of claim 1 for producing a high surface short run copper strip, wherein: and 7) 80) rolling the strip with the copper strip thickness of 0.1mm, wherein the average pass processing rate is 13.59%, and the roller surface roughness of the roller is 0.1-0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911043526.7A CN110860855A (en) | 2019-10-30 | 2019-10-30 | High-surface short-flow copper strip production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911043526.7A CN110860855A (en) | 2019-10-30 | 2019-10-30 | High-surface short-flow copper strip production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110860855A true CN110860855A (en) | 2020-03-06 |
Family
ID=69654482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911043526.7A Pending CN110860855A (en) | 2019-10-30 | 2019-10-30 | High-surface short-flow copper strip production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110860855A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618094A (en) * | 2020-04-24 | 2020-09-04 | 太原晋西春雷铜业有限公司 | Process method for solving problem of rough silver-plated surface of copper alloy belt for automobile lamp |
| CN111690838A (en) * | 2020-06-22 | 2020-09-22 | 宁波金田铜业(集团)股份有限公司 | Easily-wound transformer-used red copper strip and preparation method thereof |
| CN112296118A (en) * | 2020-08-29 | 2021-02-02 | 安徽楚江科技新材料股份有限公司 | Brass copper strip rolling process |
| CN113798782A (en) * | 2020-06-16 | 2021-12-17 | 安徽金池新材料有限公司 | Process production technology of copper strip with low roughness and high quality surface |
| CN113981266A (en) * | 2021-10-25 | 2022-01-28 | 鑫古河金属(无锡)有限公司 | High-performance phosphor bronze strip and production process thereof |
| CN114273424A (en) * | 2021-12-28 | 2022-04-05 | 安徽永杰铜业有限公司 | Superhard copper foil for heat exchanger fin and production process thereof |
| CN114273424B (en) * | 2021-12-28 | 2024-06-07 | 安徽永杰铜业有限公司 | Superhard copper foil for heat exchanger fin and production process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008099892A1 (en) * | 2007-02-16 | 2008-08-21 | Kabushiki Kaisha Kobe Seiko Sho | Copper alloy sheet for electrical and electronic parts excelling in strength and formability |
| CN102380518A (en) * | 2010-09-02 | 2012-03-21 | 段建松 | New production process for producing oxygen-free transformer copper strip |
| CN102990029A (en) * | 2012-12-25 | 2013-03-27 | 富威科技（吴江）有限公司 | Process for producing anaerobic copper billets in upward continuous casting method |
| CN105729064A (en) * | 2016-03-09 | 2016-07-06 | 中天合金技术有限公司 | Short-process high-performance oxygen-free copper strip production method |
-
2019
- 2019-10-30 CN CN201911043526.7A patent/CN110860855A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008099892A1 (en) * | 2007-02-16 | 2008-08-21 | Kabushiki Kaisha Kobe Seiko Sho | Copper alloy sheet for electrical and electronic parts excelling in strength and formability |
| CN102380518A (en) * | 2010-09-02 | 2012-03-21 | 段建松 | New production process for producing oxygen-free transformer copper strip |
| CN102990029A (en) * | 2012-12-25 | 2013-03-27 | 富威科技（吴江）有限公司 | Process for producing anaerobic copper billets in upward continuous casting method |
| CN105729064A (en) * | 2016-03-09 | 2016-07-06 | 中天合金技术有限公司 | Short-process high-performance oxygen-free copper strip production method |
Non-Patent Citations (2)
| Title |
|---|
| 兰利亚等: "《铜及铜合金精密带材生产技术》", 30 June 2009, 冶金工业出版社 * |
| 庄虹等: "稀土对铜及铜合金性能的影响", 《有色金属》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618094A (en) * | 2020-04-24 | 2020-09-04 | 太原晋西春雷铜业有限公司 | Process method for solving problem of rough silver-plated surface of copper alloy belt for automobile lamp |
| CN113798782A (en) * | 2020-06-16 | 2021-12-17 | 安徽金池新材料有限公司 | Process production technology of copper strip with low roughness and high quality surface |
| CN111690838A (en) * | 2020-06-22 | 2020-09-22 | 宁波金田铜业(集团)股份有限公司 | Easily-wound transformer-used red copper strip and preparation method thereof |
| CN111690838B (en) * | 2020-06-22 | 2021-10-15 | 宁波金田铜业(集团)股份有限公司 | Easily-wound transformer-used red copper strip and preparation method thereof |
| CN112296118A (en) * | 2020-08-29 | 2021-02-02 | 安徽楚江科技新材料股份有限公司 | Brass copper strip rolling process |
| CN113981266A (en) * | 2021-10-25 | 2022-01-28 | 鑫古河金属(无锡)有限公司 | High-performance phosphor bronze strip and production process thereof |
| CN113981266B (en) * | 2021-10-25 | 2022-11-25 | 鑫谷和金属(无锡)有限公司 | High-performance phosphor bronze strip and production process thereof |
| CN114273424A (en) * | 2021-12-28 | 2022-04-05 | 安徽永杰铜业有限公司 | Superhard copper foil for heat exchanger fin and production process thereof |
| CN114273424B (en) * | 2021-12-28 | 2024-06-07 | 安徽永杰铜业有限公司 | Superhard copper foil for heat exchanger fin and production process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110860855A (en) | High-surface short-flow copper strip production process | |
| CN102658452B (en) | Processing method of copper strip used for copper steel composites | |
| CN105729064A (en) | Short-process high-performance oxygen-free copper strip production method | |
| CN103331584B (en) | A kind of production technology of photovoltaic solar copper strips | |
| CN104057260B (en) | A kind of processing method of rolled copper foil mother metal | |
| CN107282686A (en) | A kind of production technology of short route half-hard state copper belt | |
| CN101502872A (en) | Shortened method for producing oxygen-free copper belt | |
| CN102274936B (en) | Method for manufacturing non-oriented silicon steel plate based on twin-roll thin strip continuous casting technology | |
| CN104722577A (en) | Continuous rolling production process and process arrangement | |
| CN111097799B (en) | Short-process rolling method of nickel strip | |
| CN113263151B (en) | Equipment and process for producing aluminum alloy with deep drawing performance by cast-rolling method | |
| CN109226323A (en) | A kind of cold rolling heat treatment process of tab copper strips | |
| CN105499300A (en) | Production technology of copper strip for lock | |
| CN103014451A (en) | Aluminum material of zip-top two-sheet can body and production method thereof | |
| CN102380518A (en) | New production process for producing oxygen-free transformer copper strip | |
| CN108747231A (en) | A kind of production technology of lug copper strips | |
| CN102851542A (en) | Titanium alloy for manufacturing tool and preparation method thereof | |
| CN109261739A (en) | A kind of short route production wide cut is greater than 630mm transformer copper strip technique | |
| CN114525390A (en) | Production method of copper-tin alloy strip | |
| CN109338065B (en) | Method for manufacturing hot-rolled steel strip made of magnetic material | |
| CN105543518B (en) | A kind of production method of 5182 aluminium alloy draw ring material base material | |
| CN108127342B (en) | Preparation process of high-precision copper and copper alloy medium plate | |
| EP4169633A1 (en) | Thin strip production process employing continuous casting and rolling | |
| CN109014091A (en) | A kind of production technology of high moulding brass band | |
| CN113198867A (en) | Production process of copper strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200306 |
|
| RJ01 | Rejection of invention patent application after publication |