CN110343900B - Preparation method of copper strip for flexible connection - Google Patents
Preparation method of copper strip for flexible connection Download PDFInfo
- Publication number
- CN110343900B CN110343900B CN201910716566.7A CN201910716566A CN110343900B CN 110343900 B CN110343900 B CN 110343900B CN 201910716566 A CN201910716566 A CN 201910716566A CN 110343900 B CN110343900 B CN 110343900B
- Authority
- CN
- China
- Prior art keywords
- rolling
- annealing
- copper strip
- thickness
- temperature
- 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.)
- Active
Links
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
-
- 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
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/13—Surface milling of plates, sheets or strips
-
- 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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
-
- 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
-
- 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
- C21D9/663—Bell-type furnaces
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- 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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
-
- 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
- B21B2001/221—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 by cold-rolling
-
- 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
- B21B2001/225—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 by hot-rolling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metal Rolling (AREA)
Abstract
The application provides a preparation method of a copper strip for flexible connection, the bell-type furnace annealing in the cold rolling mill pass and the cold rolling bottom-retaining mill pass in the traditional copper strip production is changed into the air cushion type continuous annealing furnace annealing, the air cushion type continuous annealing furnace annealing in the cold rolling finished product mill pass in the traditional copper strip production is changed into the bell-type furnace annealing, and the bell-type furnace annealing is improved in multiple places, thereby not only solving the problem that the traditional copper strip is broken easily when the traditional copper strip advances in the air cushion type continuous annealing furnace, but also solving the problem that the traditional copper strip is easy to be seriously bonded between the annealing back layer and the annealing layer of the bell-type furnace, and the application does not influence the performance of the finished copper strip on the improvement of the annealing process, the performance of the produced finished copper strip completely reaches the standard, and meets the requirements of the standard and clients.
Description
Technical Field
The invention relates to the technical field of copper material processing, in particular to a preparation method of a copper strip for flexible connection.
Background
With the rise of micro-electromechanical systems and electronic industry, the development of red copper thin strip processing technology is greatly promoted, and with the rapid development of electronic products towards the high-precision direction, the requirements on the red copper thin strip are increasingly higher, and the red copper thin strip is mainly used for radiators, flexible connections, automobile strips and the like. The production process of the red copper thin strip, particularly the red copper thin strip with the thickness of 0.1mm, is more strict, and for the annealing problem of the red copper thin strip, common annealing equipment comprises a bell type furnace and an air cushion type continuous annealing furnace, the red copper thin strip is easy to generate serious adhesion between layers after the bell type furnace is annealed, and when the air cushion type continuous annealing furnace is used for annealing, the red copper thin strip is easy to generate a strip breaking phenomenon in the furnace due to the thinner thickness, so that the production cannot be carried out. At present, there is no good solution.
In actual production, the bell type furnace is often used for blank homogenization annealing, thick strip annealing after rough machining and intermediate annealing, but because most of the strips subjected to intermediate annealing are coiled under the condition of the tension of a rolling mill, the coil space is compact, and when the bell type furnace is used for annealing, the interlayer transfer resistance of heat convection is large, so the heat conduction accounts for a large proportion, the heat preservation time is inevitably long, and interlayer adhesion is easily generated during the bell type furnace annealing. Compared with a bell-type furnace, the air cushion type continuous annealing furnace has the advantages of short production period, high efficiency, uniform annealing and capability of realizing continuous and rapid annealing and avoiding the annealing and burning phenomena of a thin strip finished product, but in actual production, a red copper thin strip in the air cushion furnace has enough tension because the strip is in a heating area, otherwise the strip can be hung downwards to scratch the surface, if the tension is large, the strip breakage or wrinkle easily occurs, the running speed of the red copper thin strip in the furnace is up to more than 80m/min when the red copper thin strip is annealed in the air cushion furnace, and in addition, the influence of the strip shape, the difficulty in realizing the stable control of small tension in the furnace is higher, so the strip breakage condition frequently occurs, and the connection treatment after the strip breakage is very difficult.
Disclosure of Invention
In view of this, the present invention provides a method for manufacturing a copper strip for flexible connection.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a preparation method of a copper strip for flexible connection comprises the following steps of:
1) smelting and casting: putting a new material copper and a production return material copper into a smelting furnace according to a certain proportion for smelting, and then casting to obtain an ingot, wherein the ingot comprises the following components in percentage by mass: the content of P is less than or equal to 0.001 percent, the total content of impurity elements is less than or equal to 0.01 percent, and the balance is Cu;
2) hot rolling: carrying out hot rolling treatment on the ingot obtained in the step 1), heating the ingot in a stepping furnace before hot rolling, wherein the tapping temperature of the ingot is 840-870 ℃, the discharging step length is 10 min/root, the heating time is 3.5-4 h, the uniform temperature of the ingot is ensured before tapping, 7-pass hot rolling is adopted, the final rolling temperature is controlled at 560-580 ℃, and an ingot blank is obtained, wherein the thickness of the ingot blank is 15-17 mm, and the width of the ingot blank is 658-662 mm;
3) milling a surface: milling the upper surface and the lower surface of the ingot blank obtained in the step 2), wherein the total thickness of the milled double surfaces is 0.6-0.8 mm, the milling speed is less than or equal to 4.5m/min, the rotating speed of a milling cutter is 770-800 r/s, the transverse thickness tolerance of the ingot blank after surface milling is +/-0.01 mm, and the longitudinal thickness tolerance is +/-0.015 mm;
4) cold rolling and cogging rolling: performing cold rolling cogging rolling process treatment on the ingot blank subjected to surface milling obtained in the step 3), wherein the cold rolling cogging, the trimming and the cleaning are sequentially performed, the cold rolling cogging adopts 8-pass rolling, and the finish rolling thickness of 8 passes from the thickness after the surface milling is 11mm-8.15mm-5.7mm-3.8mm-2.5mm-1.67mm-1.2mm-1.0mm in sequence to obtain a red copper strip with the thickness of 1.0mm, wherein the thickness tolerance of the red copper strip is +/-0.01 mm;
5) cold rolling and rolling process: performing cold rolling and rolling process treatment on the copper strip obtained in the step 4), wherein the cold rolling and rolling process comprises rolling and annealing which are sequentially performed, wherein the rolling process adopts 4-pass rolling, and the final rolling thickness of the 4-pass rolling is 0.78-0.59-0.5-0.4 mm in sequence, so that the copper strip with the thickness of 0.4mm is obtained, and the thickness tolerance is +0-0.01 mm;
6) cold rolling and bottom-reserving rolling process: carrying out cold rolling and bottom-reserving rolling process treatment on the copper strip obtained in the step 5), wherein the cold rolling and bottom-reserving rolling process comprises bottom-reserving rolling and annealing which are sequentially carried out, the bottom-reserving rolling adopts 2 passes of rolling, the final rolling thickness of the 2 passes is 0.24mm-0.2mm sequentially, the copper strip with the thickness of 0.2mm is obtained, and the thickness tolerance is +0-0.01 mm;
7) and (3) rolling process of cold-rolled finished products: carrying out cold rolling finished product rolling process treatment on the copper strip obtained in the step 6), wherein the cold rolling finished product rolling process comprises finished product rolling, cleaning, stretch bending straightening, annealing and cutting which are sequentially carried out, the finished product rolling adopts 1-pass rolling, the 1-pass rolling is used for rolling the copper strip with the thickness of 0.2mm into the copper strip with the thickness of 0.1mm, the thickness tolerance of the copper strip is +0-0.01mm, and the finished product copper strip for soft connection is obtained after the rolling;
annealing in the steps 5) and 6) by adopting an air cushion type continuous annealing furnace, wherein the air cushion type continuous annealing furnace is divided into five furnace zones, namely a preheating zone, three heating zones and a cooling zone, the temperature of the heating zones is controlled to be 630-660 ℃, the surface temperature of the copper strip after being taken out of the cooling zone is less than or equal to 65 ℃, and the travelling speed of the copper strip in the air cushion type continuous annealing furnace is adjusted according to the thickness of the copper strip to ensure that the hardness of the copper strip after being taken out of the cooling zone is less than or equal to HV70 and the grain size is less than or equal to 0.02 mm;
and in the annealing in the step 7), a bell-type furnace is adopted for annealing, the annealing temperature is 280 ℃, the heat preservation time is 4.5 hours, and the tapping temperature is less than 70 ℃.
Preferably, in the annealing in the step 7), the annealing atmosphere is a mixed gas of hydrogen and nitrogen, the volume of hydrogen is 75:25, the volume of nitrogen is 75:25, the dew point of the mixed gas is 70ppm or less, and the volume concentration of oxygen in the mixed gas is 3ppm or less.
Preferably, the annealing in step 7): annealing by adopting small coil weight, and controlling the coil weight by the stretch bending and straightening in the step 7), wherein the control standard is as follows: the coil weight of the incoming material is less than 3000Kg, and annealing treatment is not carried out; when the incoming material coil weight is 3000-5500Kg, the incoming material coil is divided into an upper coil and a lower coil, and the lower layer material coil weight is controlled to be 1500-2750 Kg; when the incoming material coil weight is 5600-.
Preferably, support columns are arranged around the material tray used in the annealing in the step 7) so as to prevent the upper material tray from directly contacting the lower material roll and prevent the upper material tray from pressing the lower material roll during the annealing to cause adhesion.
Preferably, the annealing in step 7): a 0.1mm thick copper tape was fully wrapped with a copper foil before annealing for rolls of copper tape that had no exposed interior.
Preferably, the stretch bending straightening in the step 7): the cleaned copper strip with the thickness of 0.1mm is straightened by bending to improve the plate shape of the whole rolled strip, and the coiling tension in the straightening process is controlled to set the unit tension not more than 15N/mm2。
Preferably, the cleaning comprises acid washing, alkali washing, water washing and drying which are sequentially carried out;
the volume percentage concentration of the acid solution for acid washing is 7-15%, and the temperature of the acid solution is normal temperature;
the volume percentage concentration of alkali liquor for alkali washing is 2-4%, and the temperature of the alkali liquor is 70-80 ℃;
the temperature of hot water for washing is 60-80 ℃;
the drying temperature is above 70 ℃.
Preferably, the cleaning in the step 7) further comprises passivation treatment, the passivation treatment is positioned between water washing and drying, the volume percentage concentration of the passivation solution is 0.1-0.15%, and the temperature of the passivation solution is 60-80 ℃.
The beneficial technical effects of the invention are as follows:
1. annealing in a cold-rolled finished product rolling process in the traditional copper strip production mostly adopts an air cushion type continuous annealing furnace for annealing, but the copper strip finishes all rolling procedures at the moment, the thickness of the target finished product is already the target finished product thickness, the thickness is 0.1mm or less, the thickness is very thin, and the phenomenon of strip breakage is easily generated when the copper strip advances in the air cushion type continuous annealing furnace due to the thin thickness, so that normal production cannot be carried out; therefore, the process of annealing the air cushion type continuous annealing furnace is moved forward, the air cushion type continuous annealing furnace is adopted for annealing in the cold rolling process and the cold rolling process with the bottom, at the moment, the red copper strip does not complete all rolling processes, the thickness is thicker, the thickness of the red copper strip obtained after the cold rolling process is completed is 0.4mm, the thickness of the red copper strip obtained after the cold rolling process with the bottom is 0.2mm, and the thicknesses of the red copper strip obtained after the cold rolling process with the bottom are more than 0.1mm of the finished product, obviously, the red copper strip is not easy to be pulled apart when the air cushion type continuous annealing furnace is moved, and is not easy to be pulled apart when the red copper strip is moved with the thickness being more than 0.2mm, thereby solving the problem that the traditional red copper strip is easy to be pulled apart when the air cushion type continuous annealing furnace is moved, and simultaneously, the excellent annealing capability of the air cushion type continuous annealing furnace in the cold rolling process with the bottom is fully utilized, and the air cushion type continuous, the prepared 0.2mm copper strip intermediate product has the characteristics of uniform performance, good internal structure, fine crystal grains and the like, and is easy to process.
2. According to the invention, the cover type furnace annealing is adopted in the cold rolling mill process and the cold rolling bottom-retaining mill process in the traditional copper strip production, the air cushion type continuous annealing furnace is changed into annealing, the strip passes through the air cushion type continuous annealing furnace in a single layer in a constant speed mode after the improvement, the width of the copper strip is about 650mm and is wider, the total length of a heating area in the air cushion type annealing furnace reaches 20 meters and is longer, in order to prevent the lower surface of the red copper strip from being scratched due to dead weight in a long-distance furnace area, a micro-tension roller is added at the outlet of a cooling area of the air cushion type annealing furnace, the surface of the red copper strip is not provided with bonding marks, and the red copper strip has the characteristics of uniform performance, fine crystal grains and the like, and is.
3. According to the invention, the red copper strip with the thickness of 0.1mm in the cold rolling finished product rolling process in the traditional red copper strip production is annealed by adopting an air cushion type continuous annealing furnace, and is annealed by adopting a bright type bell-type furnace, so that the phenomenon that the red copper strip is easily broken when the air cushion type continuous annealing furnace advances due to too thin thickness is prevented, and in order to prevent the red copper strip from being easily seriously bonded between layers after annealing in the bell-type furnace, the following improvement measures are adopted in the method: the annealing temperature and time are controlled, small coiling tension is adopted in stretch bending straightening, finished product annealing coil weight is controlled to enable the material to control reasonable coil weight, a self-made material disc is adopted in the bell-type furnace annealing process to enable an upper layer material disc not to directly contact a lower layer material disc, meanwhile, a red copper strip material is wrapped by a red copper foil in the annealing process and protected by protective atmosphere in the bell-type furnace, and after the improvement measures, the red copper strip material finally achieves the effects of no adhesion, no oxidation and good performance after the bell-type furnace annealing, and can be directly cut into a finished product.
In conclusion, the application provides a method for preparing a copper strip for flexible connection, which changes the bell-type furnace annealing in the cold rolling and rolling process and the cold rolling and bottom-retaining rolling process in the traditional copper strip production into the air cushion type continuous annealing furnace annealing, changes the air cushion type continuous annealing furnace annealing in the cold rolling finished product rolling process in the traditional copper strip production into the bell-type furnace annealing, and carries out multiple improvements on the bell-type furnace annealing, thereby not only solving the problem that the traditional copper strip is easily broken when the air cushion type continuous annealing furnace advances, but also solving the problem that the traditional copper strip is easily seriously bonded between layers after the bell-type furnace annealing, and the improvement on the annealing process does not influence the performance of the finished copper strip, and the performance of the produced finished copper strip completely reaches the standard and meets the requirements of the standard and clients.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate the features and advantages of the invention and not to limit the scope of the claims.
The application provides a preparation method of a copper strip for flexible connection, which comprises the following steps of:
1) smelting and casting: putting a new material copper and a production return material copper into a smelting furnace according to a certain proportion for smelting, and then casting to obtain an ingot, wherein the ingot comprises the following components in percentage by mass: the content of P is less than or equal to 0.001 percent, the total content of impurity elements is less than or equal to 0.01 percent, and the balance is Cu;
2) hot rolling: carrying out hot rolling treatment on the ingot obtained in the step 1), heating the ingot in a stepping furnace before hot rolling, wherein the tapping temperature of the ingot is 840-870 ℃, the discharging step length is 10 min/root, the heating time is 3.5-4 h, the uniform temperature of the ingot is ensured before tapping, 7-pass hot rolling is adopted, the final rolling temperature is controlled at 560-580 ℃, and an ingot blank is obtained, wherein the thickness of the ingot blank is 15-17 mm, and the width of the ingot blank is 658-662 mm;
3) milling a surface: milling the upper surface and the lower surface of the ingot blank obtained in the step 2), wherein the total thickness of the milled double surfaces is 0.6-0.8 mm, the milling speed is less than or equal to 4.5m/min, the rotating speed of a milling cutter is 770-800 r/s, the transverse thickness tolerance of the ingot blank after surface milling is +/-0.01 mm, and the longitudinal thickness tolerance is +/-0.015 mm;
4) cold rolling and cogging rolling: performing cold rolling cogging rolling process treatment on the ingot blank subjected to surface milling obtained in the step 3), wherein the cold rolling cogging, the trimming and the cleaning are sequentially performed, the cold rolling cogging adopts 8-pass rolling, and the finish rolling thickness of 8 passes from the thickness after the surface milling is 11mm-8.15mm-5.7mm-3.8mm-2.5mm-1.67mm-1.2mm-1.0mm in sequence to obtain a red copper strip with the thickness of 1.0mm, wherein the thickness tolerance of the red copper strip is +/-0.01 mm;
5) cold rolling and rolling process: performing cold rolling and rolling process treatment on the copper strip obtained in the step 4), wherein the cold rolling and rolling process comprises rolling and annealing which are sequentially performed, wherein the rolling process adopts 4-pass rolling, and the final rolling thickness of the 4-pass rolling is 0.78-0.59-0.5-0.4 mm in sequence, so that the copper strip with the thickness of 0.4mm is obtained, and the thickness tolerance is +0-0.01 mm;
6) cold rolling and bottom-reserving rolling process: carrying out cold rolling and bottom-reserving rolling process treatment on the copper strip obtained in the step 5), wherein the cold rolling and bottom-reserving rolling process comprises bottom-reserving rolling and annealing which are sequentially carried out, the bottom-reserving rolling adopts 2 passes of rolling, the final rolling thickness of the 2 passes is 0.24mm-0.2mm sequentially, the copper strip with the thickness of 0.2mm is obtained, and the thickness tolerance is +0-0.01 mm;
7) and (3) rolling process of cold-rolled finished products: carrying out cold rolling finished product rolling process treatment on the copper strip obtained in the step 6), wherein the cold rolling finished product rolling process comprises finished product rolling, cleaning, stretch bending straightening, annealing and cutting which are sequentially carried out, the finished product rolling adopts 1-pass rolling, the 1-pass rolling is used for rolling the copper strip with the thickness of 0.2mm into the copper strip with the thickness of 0.1mm, the thickness tolerance of the copper strip is +0-0.01mm, and the finished product copper strip for soft connection is obtained after the rolling;
annealing in the steps 5) and 6) by adopting an air cushion type continuous annealing furnace, wherein the air cushion type continuous annealing furnace is divided into five furnace zones, namely a preheating zone, three heating zones and a cooling zone, the temperature of the heating zones is controlled to be 630-660 ℃, the surface temperature of the copper strip after being taken out of the cooling zone is less than or equal to 65 ℃, and the travelling speed of the copper strip in the air cushion type continuous annealing furnace is adjusted according to the thickness of the copper strip to ensure that the hardness of the copper strip after being taken out of the cooling zone is less than or equal to HV70 and the grain size is less than or equal to 0.02 mm;
and in the annealing in the step 7), a bell-type furnace is adopted for annealing, the annealing temperature is 280 ℃, the heat preservation time is 4.5 hours, and the tapping temperature is less than 70 ℃.
In one embodiment of the application, in the annealing in step 7), the annealing atmosphere is a mixed gas of hydrogen and nitrogen, the volume of hydrogen and the volume of nitrogen are 75:25, the dew point of the mixed gas is less than or equal to 70ppm, and the volume concentration of oxygen in the mixed gas is less than or equal to 3 ppm.
In one embodiment of the present application, the annealing in step 7): annealing by adopting small coil weight, and controlling the coil weight by the stretch bending and straightening in the step 7), wherein the control standard is as follows: the coil weight of the incoming material is less than 3000Kg, and annealing treatment is not carried out; when the incoming material coil weight is 3000-5500Kg, the incoming material coil is divided into an upper coil and a lower coil, and the lower layer material coil weight is controlled to be 1500-2750 Kg; when the incoming material coil weight is 5600-.
In one embodiment of the application, support columns are arranged around the material tray used in the annealing in the step 7) so as to prevent the upper material tray from directly contacting the lower material roll and prevent the upper material tray from pressing the lower material roll to cause bonding during the annealing.
In one embodiment of the present application, the annealing in step 7): a 0.1mm thick copper tape was fully wrapped with a copper foil before annealing for rolls of copper tape that had no exposed interior.
In one embodiment of the present application, the stretch bending straightening in step 7): the cleaned copper strip with the thickness of 0.1mm is straightened by bending to improve the plate shape of the whole rolled strip, and the coiling tension in the straightening process is controlled to set the unit tension not more than 15N/mm2。
In one embodiment of the present application, the cleaning includes acid washing, alkali washing, water washing, and drying, which are performed in sequence;
the volume percentage concentration of the acid solution for acid washing is 7-15%, and the temperature of the acid solution is normal temperature;
the volume percentage concentration of alkali liquor for alkali washing is 2-4%, and the temperature of the alkali liquor is 70-80 ℃;
the temperature of hot water for washing is 60-80 ℃;
the drying temperature is above 70 ℃.
In an embodiment of the application, the cleaning in step 7) further includes a passivation treatment, the passivation treatment is located between the water washing and the drying, the volume percentage concentration of the passivation solution is 0.1% -0.15%, and the temperature of the passivation solution is 60-80 ℃.
The materials, methods and apparatus not described in detail in the present invention are all prior art.
For further understanding of the present invention, the following examples are provided to illustrate the method for manufacturing a copper ribbon for flexible connection, and the scope of the present invention is not limited by the following examples.
Example 1
The production process of the red copper thin strip for soft connection is described in detail below by taking the C1100 mark, the specification of 0.1mm × 305m and the tolerance of +0-0.01mm as an example:
a preparation method of a copper strip for flexible connection comprises the following steps of:
1) smelting and casting: putting a new material copper and a production return material copper into a smelting furnace according to a certain proportion for smelting, and then casting to obtain an ingot, wherein the ingot comprises the following components in percentage by mass: the content of P is less than or equal to 0.001 percent, the total content of impurity elements is less than or equal to 0.01 percent, and the balance is Cu;
2) hot rolling: carrying out hot rolling treatment on the ingot obtained in the step 1), heating the ingot in a stepping furnace before hot rolling, wherein the tapping temperature of the ingot is 840-870 ℃, the discharging step length is 10 min/root, the heating time is 3.5-4 h, the uniform temperature of the ingot is ensured before tapping, 7-pass hot rolling is adopted, the final rolling temperature is controlled at 560-580 ℃, and an ingot blank is obtained, wherein the thickness of the ingot blank is 16.01mm, and the width of the ingot blank is 659 mm;
3) milling a surface: milling the upper surface and the lower surface of the ingot blank obtained in the step 2), wherein the total thickness of the milled double surfaces is 0.6mm, the milling speed is less than or equal to 4.5m/min, the rotation speed of a milling cutter is 770 r/s-800 r/s, the transverse thickness tolerance of the ingot blank after surface milling is +/-0.01 mm, the longitudinal thickness tolerance of the ingot blank after surface milling is +/-0.015 mm, and the thickness of the ingot blank after surface milling is 14.8 mm;
4) cold rolling and cogging rolling: performing cold rolling cogging rolling process treatment on the ingot blank subjected to surface milling obtained in the step 3), wherein the cold rolling cogging, the trimming and the cleaning are sequentially performed, the cold rolling cogging adopts 8-pass rolling, and the finish rolling thickness of 8 passes from the thickness after the surface milling is 11mm-8.15mm-5.7mm-3.8mm-2.5mm-1.67mm-1.2mm-1.0mm in sequence to obtain a red copper strip with the thickness of 1.0mm, wherein the thickness tolerance of the red copper strip is +/-0.01 mm;
then longitudinally cutting edges of the strips through a thick strip, wherein the width of the copper strips after edge cutting is 630mm, and cleaning the strips after edge cutting;
the cleaning in the step 4) comprises acid cleaning, alkali cleaning, water cleaning and drying which are sequentially carried out;
the volume percentage concentration of the acid solution for acid washing is 7-15%, and the temperature of the acid solution is normal temperature;
the volume percentage concentration of alkali liquor for alkali washing is 2-4%, and the temperature of the alkali liquor is 70-80 ℃;
the temperature of hot water for washing is 60-80 ℃;
the drying temperature is above 70 ℃;
the brush is used in the cleaning: the brushes comprise 800-mesh grinding brushes and 1500-mesh polishing brushes, and the pressing amount is adjusted according to the surface of the copper strip, so that the surface of the obtained copper strip is uniformly printed and bright;
the drying temperature is above 70 ℃;
5) cold rolling and rolling process: performing cold rolling and rolling process treatment on the copper strip obtained in the step 4), wherein the cold rolling and rolling process comprises rolling and annealing which are sequentially performed, wherein the rolling process adopts 4-pass rolling, and the final rolling thickness of the 4-pass rolling is 0.78-0.59-0.5-0.4 mm in sequence, so that the copper strip with the thickness of 0.4mm is obtained, and the thickness tolerance is +0-0.01 mm;
annealing in the step 5) is carried out by adopting an air cushion type continuous annealing furnace;
the air cushion type continuous annealing furnace is divided into five furnace zones, namely a preheating zone, three heating zones and a cooling zone, wherein the temperature of the heating zones is controlled to be 630-660 ℃, the surface temperature of the red copper strip after the red copper strip is taken out of the cooling zone is less than or equal to 65 ℃, and no bonding defect occurs on the surface of the strip after the strip is annealed by the air cushion type continuous annealing furnace;
adjusting the travelling speed of the copper strip in the air cushion type continuous annealing furnace according to the thickness of the copper strip, wherein when the thickness of the copper strip is 0.4mm, the travelling speed is 65m/min, the hardness of the copper strip obtained after the copper strip is taken out of a cooling area is less than or equal to HV70, the crystal grains are uniform, and the grain size is less than or equal to 0.02 mm;
6) cold rolling and bottom-reserving rolling process: carrying out cold rolling and bottom-reserving rolling process treatment on the copper strip obtained in the step 5), wherein the cold rolling and bottom-reserving rolling process comprises bottom-reserving rolling and annealing which are sequentially carried out, the bottom-reserving rolling adopts 2 passes of rolling, the final rolling thickness of the 2 passes is 0.24mm-0.2mm sequentially, the copper strip with the thickness of 0.2mm is obtained, and the thickness tolerance is +0-0.01 mm;
annealing in the step 6) is carried out by adopting an air cushion type continuous annealing furnace;
the air cushion type continuous annealing furnace is divided into five furnace zones, namely a preheating zone, three heating zones and a cooling zone, wherein the temperature of the heating zones is controlled to be 630-660 ℃, the surface temperature of the red copper strip after the red copper strip is taken out of the cooling zone is less than or equal to 65 ℃, and no bonding defect occurs on the surface of the strip after the strip is annealed by the air cushion type continuous annealing furnace;
adjusting the travelling speed of the copper strip in the air cushion type continuous annealing furnace according to the thickness of the copper strip, wherein when the thickness of the copper strip is 0.2mm, the travelling speed is 90m/min, the hardness of the copper strip obtained after the copper strip is taken out of a cooling area is less than or equal to HV70, the crystal grains are uniform, and the grain size is less than or equal to 0.02 mm;
7) and (3) rolling process of cold-rolled finished products: carrying out cold rolling finished product rolling process treatment on the copper strip obtained in the step 6), wherein the cold rolling finished product rolling process comprises finished product rolling, cleaning, stretch bending straightening, annealing and cutting which are sequentially carried out, the finished product rolling adopts 1-pass rolling, the 1-pass rolling is used for rolling the copper strip with the thickness of 0.2mm into the copper strip with the thickness of 0.1mm, the thickness tolerance of the copper strip is +0-0.01mm, and the finished product copper strip for soft connection is obtained after the rolling;
the cleaning in the step 7) comprises acid washing, alkali washing, water washing, passivation and drying which are sequentially carried out;
the concentration of the acid solution for acid washing is 9.9 percent, and the temperature of the acid solution is normal temperature; the acid is 98% concentrated sulfuric acid;
the concentration of alkaline solution for alkaline washing is 2.3 percent, and the temperature of the alkaline solution is 72 ℃;
the temperature of hot water for washing is 70 ℃;
the concentration of the passivation solution is 0.1-0.15%, and the temperature is 60-80 ℃;
the drying temperature is 82 ℃;
the brush is not used in the cleaning process;
then, the cleaned copper strip is subjected to stretch bending straightening by a stretch bending straightening machine, the elongation of the copper strip is 0.15% during the stretch bending straightening, and the coiling tension is set to be 12N/mm in unit tension2The plate shape of the copper strip is improved, and the bonding between layers can be ensured not to be generated during the subsequent bell-type furnace annealing;
the weight of the coil material is 5300kg, the coil of the red copper strip is divided into two coils during stretch bending straightening, and the coil weights are 2700kg and 2600 kg;
and then, annealing the straightened copper strip by adopting a bell type furnace, wrapping the copper strip which is coiled during the stretch bending straightening by using a copper foil before annealing, wherein the annealing temperature is 280 ℃, the heat preservation time is 4.5h, the tapping temperature is less than 70 ℃, a self-made material plate is adopted during annealing, the protective atmosphere is mixed gas of 75% (volume percentage) hydrogen and 25% (volume percentage) nitrogen, the dew point of the mixed gas is less than or equal to 70ppm, the volume concentration of oxygen in the mixed gas is less than or equal to 3ppm, the surface of the annealed copper strip is bright, free of bonding and oxidation black ash, and the finished product can be directly cut.
In example 1, the copper strip is not broken when annealed in the air cushion type continuous annealing furnace, and the copper strip is not bonded between layers after annealing in the bell type furnace, and the finished copper strip is inspected, and the finished product inspection items include: surface quality, tolerance, plate shape, mechanical properties, chemical components, grain size and other parameters, the tensile strength of the finished product copper strip is 245MPa, the elongation is 31%, the hardness HV is 60, the conductivity is 100.23, and the average grain size is 0.011 mm.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (3)
1. A preparation method of a copper strip for flexible connection is characterized by comprising the following steps of:
1) smelting and casting: putting a new material copper and a production return material copper into a smelting furnace according to a certain proportion for smelting, and then casting to obtain an ingot, wherein the ingot comprises the following components in percentage by mass: the content of P is less than or equal to 0.001 percent, the total content of impurity elements is less than or equal to 0.01 percent, and the balance is Cu;
2) hot rolling: carrying out hot rolling treatment on the ingot obtained in the step 1), heating the ingot in a stepping furnace before hot rolling, wherein the tapping temperature of the ingot is 840-870 ℃, the discharging step length is 10 min/root, the heating time is 3.5-4 h, the uniform temperature of the ingot is ensured before tapping, 7-pass hot rolling is adopted, the final rolling temperature is controlled at 560-580 ℃, and an ingot blank is obtained, wherein the thickness of the ingot blank is 15-17 mm, and the width of the ingot blank is 658-662 mm;
3) milling a surface: milling the upper surface and the lower surface of the ingot blank obtained in the step 2), wherein the total thickness of the milled double surfaces is 0.6-0.8 mm, the milling speed is less than or equal to 4.5m/min, the rotating speed of a milling cutter is 770-800 r/s, the transverse thickness tolerance of the ingot blank after surface milling is +/-0.01 mm, and the longitudinal thickness tolerance is +/-0.015 mm;
4) cold rolling and cogging rolling: performing cold rolling cogging rolling process treatment on the ingot blank subjected to surface milling obtained in the step 3), wherein the cold rolling cogging, the trimming and the cleaning are sequentially performed, the cold rolling cogging adopts 8-pass rolling, and the finish rolling thickness of 8 passes from the thickness after the surface milling is 11mm-8.15mm-5.7mm-3.8mm-2.5mm-1.67mm-1.2mm-1.0mm in sequence to obtain a red copper strip with the thickness of 1.0mm, wherein the thickness tolerance of the red copper strip is +/-0.01 mm;
5) cold rolling and rolling process: performing cold rolling and rolling process treatment on the copper strip obtained in the step 4), wherein the cold rolling and rolling process comprises rolling and annealing which are sequentially performed, wherein the rolling process adopts 4-pass rolling, and the final rolling thickness of the 4-pass rolling is 0.78-0.59-0.5-0.4 mm in sequence, so that the copper strip with the thickness of 0.4mm is obtained, and the thickness tolerance is +0-0.01 mm;
6) cold rolling and bottom-reserving rolling process: carrying out cold rolling and bottom-reserving rolling process treatment on the copper strip obtained in the step 5), wherein the cold rolling and bottom-reserving rolling process comprises bottom-reserving rolling and annealing which are sequentially carried out, the bottom-reserving rolling adopts 2 passes of rolling, the final rolling thickness of the 2 passes is 0.24mm-0.2mm sequentially, the copper strip with the thickness of 0.2mm is obtained, and the thickness tolerance is +0-0.01 mm;
7) and (3) rolling process of cold-rolled finished products: carrying out cold rolling finished product rolling process treatment on the copper strip obtained in the step 6), wherein the cold rolling finished product rolling process comprises finished product rolling, cleaning, stretch bending straightening, annealing and cutting which are sequentially carried out, the finished product rolling adopts 1-pass rolling, the 1-pass rolling is used for rolling the copper strip with the thickness of 0.2mm into the copper strip with the thickness of 0.1mm, the thickness tolerance of the copper strip is +0-0.01mm, and the finished product copper strip for soft connection is obtained after the rolling;
annealing in the steps 5) and 6) by adopting an air cushion type continuous annealing furnace, wherein the air cushion type continuous annealing furnace is divided into five furnace zones, namely a preheating zone, three heating zones and a cooling zone, the temperature of the heating zones is controlled to be 630-660 ℃, the surface temperature of the copper strip after being taken out of the cooling zone is less than or equal to 65 ℃, and the travelling speed of the copper strip in the air cushion type continuous annealing furnace is adjusted according to the thickness of the copper strip to ensure that the hardness of the copper strip after being taken out of the cooling zone is less than or equal to HV70 and the grain size is less than or equal to 0.02 mm;
annealing in the step 7) is carried out by adopting a bell-type furnace, wherein the annealing temperature is 280 ℃, the heat preservation time is 4.5 hours, and the tapping temperature is less than 70 ℃;
in the annealing in the step 7), the annealing atmosphere is mixed gas of hydrogen and nitrogen, the volume of the hydrogen is 75:25, the dew point of the mixed gas is less than or equal to 70ppm, and the volume concentration of oxygen in the mixed gas is less than or equal to 3 ppm;
annealing in the step 7): annealing by adopting small coil weight, and controlling the coil weight by the stretch bending and straightening in the step 7), wherein the control standard is as follows: the coil weight of the incoming material is less than 3000kg, and annealing treatment is not performed; when the incoming material coil weight is 3000-5500kg, the incoming material coil weight is divided into an upper coil and a lower coil, and the coil weight of the lower layer material is controlled to be 1500-2750 kg; when the incoming material coil weight is 5600-;
supporting columns are arranged on the periphery of the material tray used in the annealing in the step 7) so as to prevent the upper material tray from directly contacting the lower material roll and prevent the upper material tray from pressing and placing the lower material roll to cause bonding during the annealing;
annealing in the step 7): fully wrapping a 0.1mm thick copper strip with a copper foil before annealing for a copper strip coil that should not expose the inside;
stretch bending and straightening in the step 7): the cleaned copper strip with the thickness of 0.1mm is straightened by bending to improve the plate shape of the whole rolled strip, and the coiling tension in the straightening process is controlled to set the unit tension not more than 15N/mm2。
2. The production method according to claim 1, wherein the washing comprises acid washing, alkali washing, water washing and drying in this order;
the volume percentage concentration of the acid solution for acid washing is 7-15%, and the temperature of the acid solution is normal temperature;
the volume percentage concentration of alkali liquor for alkali washing is 2-4%, and the temperature of the alkali liquor is 70-80 ℃;
the temperature of hot water for washing is 60-80 ℃;
the drying temperature is above 70 ℃.
3. The preparation method of claim 2, wherein the cleaning in the step 7) further comprises passivation treatment, the passivation treatment is positioned between water washing and drying, the volume percentage concentration of the passivation solution is 0.1-0.15%, and the temperature of the passivation solution is 60-80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910716566.7A CN110343900B (en) | 2019-08-05 | 2019-08-05 | Preparation method of copper strip for flexible connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910716566.7A CN110343900B (en) | 2019-08-05 | 2019-08-05 | Preparation method of copper strip for flexible connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110343900A CN110343900A (en) | 2019-10-18 |
| CN110343900B true CN110343900B (en) | 2020-07-03 |
Family
ID=68183967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910716566.7A Active CN110343900B (en) | 2019-08-05 | 2019-08-05 | Preparation method of copper strip for flexible connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110343900B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899355A (en) * | 2019-11-29 | 2020-03-24 | 金川集团股份有限公司 | Production method of ultra-long high-conductivity copper tube |
| CN110938787A (en) * | 2019-12-24 | 2020-03-31 | 中铝华中铜业有限公司 | Air cushion type continuous annealing process |
| CN112296117A (en) * | 2020-08-29 | 2021-02-02 | 安徽楚江科技新材料股份有限公司 | Red copper strip rolling process |
| CN113083891A (en) * | 2021-03-29 | 2021-07-09 | 安徽楚江科技新材料股份有限公司 | Copper strip rolling production process flow |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988351A (en) * | 2015-07-31 | 2015-10-21 | 中色奥博特铜铝业有限公司 | Brass strip for button and manufacturing method thereof |
| CN105803249A (en) * | 2016-05-09 | 2016-07-27 | 安徽鑫科新材料股份有限公司 | High-performance tin-phosphor bronze strip and production method thereof |
| CN106834825A (en) * | 2016-11-16 | 2017-06-13 | 广西南南铝加工有限公司 | 5182 aluminium alloys and the aluminium alloy are prepared into the process of cover material strip material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100116341A1 (en) * | 2008-11-12 | 2010-05-13 | Solar Applied Materials Technology Corp. | Copper-gallium allay sputtering target, method for fabricating the same and related applications |
-
2019
- 2019-08-05 CN CN201910716566.7A patent/CN110343900B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988351A (en) * | 2015-07-31 | 2015-10-21 | 中色奥博特铜铝业有限公司 | Brass strip for button and manufacturing method thereof |
| CN105803249A (en) * | 2016-05-09 | 2016-07-27 | 安徽鑫科新材料股份有限公司 | High-performance tin-phosphor bronze strip and production method thereof |
| CN106834825A (en) * | 2016-11-16 | 2017-06-13 | 广西南南铝加工有限公司 | 5182 aluminium alloys and the aluminium alloy are prepared into the process of cover material strip material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110343900A (en) | 2019-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110343900B (en) | Preparation method of copper strip for flexible connection | |
| CN105689392B (en) | A kind of very thin enamel cold-rolled strip production method | |
| JP5998758B2 (en) | Rough drawn copper wire and winding, and method for producing rough drawn copper wire | |
| TWI391190B (en) | Method and production line for producing metal strip from copper or copper alloys | |
| CN109127762B (en) | Production process of tin brass strip | |
| CN101165223B (en) | Acid pickling method for stainless steel surface | |
| JP5660374B2 (en) | Magnesium alloy plate manufacturing method and magnesium alloy coil material | |
| CN111254329A (en) | Rolling process of 6061 aluminum alloy medium plate | |
| CN109022898A (en) | A kind of production technology of automotive connector one-ton brass band | |
| CN109868398B (en) | 6xxx series aluminum alloy plate with high flanging performance and preparation method thereof | |
| TW200536946A (en) | Method for producing Al-Mg-Si alloy excellent in bake-hardenability and hemmability | |
| CN109226323A (en) | A kind of cold rolling heat treatment process of tab copper strips | |
| CN102146533A (en) | Formula of copper nickel tin alloy strip and production process | |
| CN102719694A (en) | CuCrZr alloy material, preparation method thereof and method for preparing strips with same | |
| CN105499300A (en) | Production technology of copper strip for lock | |
| CN109136807B (en) | Titanium plate annealing method for obtaining good plate shape | |
| CN106755871A (en) | A kind of cold-rolled strip manufacture method for deep-draw application high | |
| CN112893464A (en) | Processing method of aluminum foil for power battery | |
| CN102719698B (en) | CuNiSiMg alloy material and preparation method thereof as well as method for preparing strip using alloy material | |
| CN114525390A (en) | Production method of copper-tin alloy strip | |
| CN111112332A (en) | Processing technology of rolled copper foil blank | |
| CN115971249B (en) | Preparation method of ultrathin TC4 titanium alloy plate | |
| CN105420544B (en) | A kind of one-ton brass band and preparation method thereof | |
| CN114472515A (en) | Preparation method of multi-element alloy thin strip for lead frame | |
| CN109457199B (en) | Processing technology of annealed 7-series aluminum alloy sheet 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230817 Address after: 6 households, including No. 3, OBT Building, Shifangyuan, Economic Development Zone, Linqing City, Liaocheng City, Shandong Province, 252000 Patentee after: Zhongse Zhengrui (Shandong) Copper Industry Co.,Ltd. Address before: 252600 north head of East 2nd Ring Road, Linqing City, Liaocheng City, Shandong Province Patentee before: CNMC ALBETTER ALBRONZE Co.,Ltd. |
|
| TR01 | Transfer of patent right |