CN110343900A - A kind of preparation method being flexible coupling with copper belt - Google Patents
A kind of preparation method being flexible coupling with copper belt Download PDFInfo
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- CN110343900A CN110343900A CN201910716566.7A CN201910716566A CN110343900A CN 110343900 A CN110343900 A CN 110343900A CN 201910716566 A CN201910716566 A CN 201910716566A CN 110343900 A CN110343900 A CN 110343900A
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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Abstract
This application provides a kind of preparation methods being flexible coupling with copper belt, cold rolling in the production of traditional copper belt is changed to air-cushion type continuous annealing furnace annealing in the cover annealing in rolling process of keeping on file of rolling process processed and cold rolling, and the air-cushion type continuous annealing furnace annealing in the cold rolling finished product rolling process in the production of traditional copper belt is changed to cover annealing, and many places improvement is carried out to cover annealing, to both solve the problems, such as to be easy to be pulled off when traditional copper belt is advanced in air-cushion type continuous annealing furnace, solve the problems, such as that traditional copper belt is easy to produce serious bonding between layers after cover annealing again, and the application does not have an impact the performance of finished product copper belt to the improvement of annealing process, the performance of the finished product copper belt of production is completely up to standard, comply with standard the needs with client.
Description
Technical field
The present invention relates to copper material processing technique fields, more particularly, to a kind of preparation method being flexible coupling with copper belt.
Background technique
With the rise of MEMS and electronics industry, the development of red copper strip processing technology has greatly been pushed, with
Fast development of the electronic product to high-grade, precision and advanced direction, the requirement for red copper strip even more increasingly increase, be mainly used for radiating
Device is flexible coupling, automobile belt etc..Production process requirement of the red copper strip especially thickness at 0.1mm is stringenter, for red copper
The annealing problems of strip, common annealing device have bell furnace and two kinds of air-cushion type continuous annealing furnace, and red copper strip is in bell furnace
When being easy to produce serious bonding after annealing between layers, and passing through air-cushion type continuous annealing furnace annealing, due to red copper strip
Thinner thickness is easy to produce belt phenomenon in furnace, leads to not be produced.Currently, the solution not had also.
Bell furnace is chiefly used in the annealing of the thicker strip base after blank homogenizing annealing, roughing in actual production and centre is moved back
Fire, but since the band for carrying out intermediate annealing is batched under milling train tension, so close between volume layer, when
The interlayer transmitting resistance of thermal convection when bell furnace is annealed is larger, therefore the ratio that heat transfer accounts for is big, and soaking time is inevitable
It grows, so being easy to produce interlaminar bonding in cover annealing.Air-cushion type continuous annealing furnace has the production cycle compared with bell furnace
Short, high-efficient, annealing avoids strip finished products from burning the advantages such as viscous phenomenon uniformly, it can be achieved that continuous short annealing, but in reality
Red copper strip is in air cushion furnace since so long band is in heating zone in the production of border, it is necessary to give enough tension, otherwise
Band can because lower outstanding due to scratch surface, there are if tension is big and easily disconnected band or wrinkle, when red copper strip is annealed in air cushion furnace
The speed of service in furnace is up to 80m/min or more, and plate shape influences in addition, realizes that small tension receiving coil stability contorting difficulty is bigger in furnace,
So disconnected band situation often occurs, and it is also very difficult that junction reason is carried out after disconnected band.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of preparation methods being flexible coupling with copper belt.
In order to solve the above technical problems, technical solution provided by the invention are as follows:
A kind of preparation method being flexible coupling with copper belt includes the steps that next coming in order carry out:
1) melting and casting: virgin material copper and production feed back copper are launched into melting in smelting furnace according to a certain percentage, then
Casting, obtain ingot casting, the ingot casting includes the component of following mass percent: content≤0.001% of P, impurity element it is total
Content≤0.01%, the Cu of surplus；
2) hot rolling: the ingot casting that step 1) is obtained carries out hot rolling treatment, carries out in stepping furnace before hot rolling to the ingot casting
Heating, the tapping temperature of the ingot casting are 840 DEG C~870 DEG C, and discharging step-length is 10min/ root, and heating time is 3.5h~4h,
Ensuring that ingot casting temperature is uniform before coming out of the stove, hot rolling uses 7 passes, and finishing temperature control obtains ingot blank at 560 DEG C~580 DEG C,
The ingot blank with a thickness of 15mm~17mm, width is 658mm~662mm；
3) mill face: the upper and lower surface of the ingot blank that step 2) is obtained carries out milling, the overall thickness of two-sided milling be 0.6mm~
0.8mm, Milling Speed≤4.5m/min, milling cutter revolving speed are 770r/s~800r/s, and the transverse gage tolerance of ingot blank is behind milling face
± 0.01mm, longitudinal thickness tolerance are ± 0.015mm；
4) cold rolling cogging rolling process: the ingot blank behind the milling face that step 3) is obtained carries out cold rolling cogging rolling process and handles, including according to
The cold rolling cogging of secondary progress, trimming and cleaning, the cold rolling cogging use 8 passes, 8 passage thickness behind milling face
Finish to gauge thickness be followed successively by 11mm-8.15mm-5.7mm-3.8mm-2.5mm-1.67mm-1.2mm-1.0mm, obtain with a thickness of
The copper belt of 1.0mm, thickness deviation are ± 0.01mm；
5) cold rolling is in rolling process processed: the copper belt that step 4) obtains being carried out cold rolling and is handled in rolling process processed, including is successively carried out
In system rolling and annealing, described to use 4 passes in system rolling, the finish to gauge thickness of 4 passages is followed successively by 0.78mm-
0.59mm-0.5mm-0.4mm, obtains the copper belt with a thickness of 0.4mm, and thickness deviation is+0-0.01mm；
6) cold rolling is kept on file rolling process: the copper belt that step 5) obtains being carried out cold rolling and is kept on file rolling process processing, including is successively carried out
Keep on file to roll and anneal, using 2 passes, the finish to gauge thickness of 2 passages is followed successively by 0.24mm- for the rolling of keeping on file
0.2mm, obtains the copper belt with a thickness of 0.2mm, and thickness deviation is+0-0.01mm；
7) cold rolling finished product rolling process: the copper belt that step 6) is obtained carries out the processing of cold rolling finished product rolling process, including successively carries out
Finished product rolling, cleaning, stretch-bending straightening, annealing and cutting, finished product rolling uses 1 passes, and the rolling of 1 passage will
It is rolled into the copper belt with a thickness of 0.1mm with a thickness of the copper belt of 0.2mm, thickness deviation is+0-0.01mm, is obtained after the completion
Copper belt is used in being flexible coupling for finished product；
Annealing in the step 5) and step 6), is annealed using air-cushion type continuous annealing furnace, and the air-cushion type connects
The temperature control in the continuous area annealing furnace Fen Wugelu, a respectively preheating zone, three heating zones and a cooling zone, heating zone exists
630 DEG C~660 DEG C, out behind cooling zone copper belt surface temperature≤65 DEG C, according to the thickness of band copper belt adjust copper belt
Travel speed in air-cushion type continuous annealing furnace, to guarantee hardness≤HV70 of copper belt behind cooling zone out, grain size≤
0.02mm；
Annealing in the step 7), is annealed using bell furnace, and annealing temperature is 280 DEG C, soaking time 4.5h,
70 DEG C of tapping temperature <.
Preferably, the annealing in the step 7), annealing atmosphere are the mixed gases of hydrogen and nitrogen, the body of hydrogen
Product: volume=75:25 of nitrogen, dew point≤70ppm of mixed gases, the volumetric concentration of the oxygen in mixed gases≤
3ppm。
Preferably, the annealing in the step 7): rouleau reannealing is taken, is controlled by the stretch-bending straightening in the step 7)
System volume weight, controls standard are as follows: supplied materials is less than the volume weight of 3000Kg, not makes annealing treatment；Come material volume weight be 3000-5500Kg when,
It is divided into up and down volume two, and controlling lower layer's material volume weight is 1500-2750Kg；Come material volume weight be 5600-6400Kg when, be divided into upper, middle and lower
Volume three, and controlling lower layer's material volume weight is 1860-2100Kg.
Preferably, the surrounding of charging tray used in the annealing in the step 7) is provided with support column, for making upper layer
Charging tray, which is not directly contacted with lower layer's material volume, upper layer charging tray pressure is prevented in annealing to put layered material volume down causes to bond.
Preferably, the annealing in the step 7): 0.1mm thickness copper belt is wrapped completely using red copper foil before annealing
Be wrapped in for must not exposed inner copper belt material volume.
Preferably, the stretch-bending straightening in the step 7): once purged 0.1mm thickness copper belt is improved by stretch-bending straightening
The template of entire volume band, and the coiling tension setting unit tension during control stretch-bending straightening is not more than 15N/mm2。
Preferably, the cleaning includes pickling, alkali cleaning, washing and the drying successively carried out；
The concentration expressed in percentage by volume of spent pickling acid liquid is 7%~15%, and acid liquor temperature is room temperature；
The concentration expressed in percentage by volume of alkali cleaning lye is 2%~4%, and alkali liquid temperature is 70 DEG C~80 DEG C；
Washing uses 60~80 DEG C of hot water temperature；
Drying temperature is at 70 DEG C or more.
Preferably, the cleaning in the step 7) further includes Passivation Treatment, and Passivation Treatment is located between washing and drying, blunt
The concentration expressed in percentage by volume for changing liquid is 0.1%-0.15%, and the temperature of passivating solution is 60~80 DEG C.
Advantageous effects of the invention are as follows:
1. the annealing in cold rolling finished product rolling process in traditional copper belt production mostly uses air-cushion type continuous annealing furnace to be moved back
Fire, but be target finished product thickness since whole rolling process has been completed in copper belt at this time, with a thickness of
0.1mm and hereinafter, very thin thickness, when so thin thickness causes copper belt to be advanced in air-cushion type continuous annealing furnace, it is easy to
Belt phenomenon is generated, leads to not normally be produced；For this purpose, the application is past by this procedure of air-cushion type continuous annealing furnace annealing
Forward keeps on file to anneal using air-cushion type continuous annealing furnace in rolling process, at this time copper belt in cold rolling in rolling process processed and cold rolling
Whole rolling process has not been completed, thickness is also thicker, the copper belt that cold rolling obtains after the completion of rolling process processed with a thickness of
0.4mm, cold rolling keep on file the copper belt obtained after the completion of rolling process with a thickness of 0.2mm, 0.4mm is thicker than finished product 0.1mm with 0.2mm
It is more, it should be apparent that, copper belt is thick to be just not easy to be pulled off when air-cushion type continuous annealing furnace is advanced, thicker to be less susceptible to
It is pulled off, to solve the problems, such as to be easy to be pulled off when traditional copper belt is advanced in air-cushion type continuous annealing furnace, and same
When take full advantage of the excellent anneal capability of air-cushion type continuous annealing furnace, keep on file in rolling process through the cold rolling in rolling process processed and cold rolling
This twice of air-cushion type continuous annealing furnace annealing it is internal so that the performance of product is uniform among the copper belt of 0.2mm obtained
The features such as tissue is good, and crystal grain is tiny, it is easier to process.
2. the present invention is by keeping the cold rolling in the production of traditional copper belt on file rolling process using bell furnace in rolling process processed and cold rolling
Annealing, is changed to air-cushion type continuous annealing furnace and anneals, since band single layer in a manner of at the uniform velocity is continuous in air-cushion type after improving
Pass through in annealing furnace, and since the width of copper belt is 650mm or so, it is wider, heating zone in air-cushion type annealing furnace it is total
Length reaches 20 meters, long, to prevent red copper band in the furnace area of long range because of self weight caused by scratch on the bottom surface, in air cushion
The cooling zone exit of formula annealing furnace increases Minimal Tension roller, makes the surface soap-free emulsion polymeization marking of red copper band, and red copper band
It is uniform with performance, the features such as crystal grain is tiny, it is easier to process.
3. 0.1mm thickness copper belt in the cold rolling finished product rolling process in the production of traditional copper belt is connected using air-cushion type in the present invention
Continuous annealing furnace is annealed, and is changed to and is annealed using slick style bell furnace, to prevent from connecting since thickness is too thin in air-cushion type
Continuous annealing furnace is easy to be pulled off when advancing, and red copper strip is easy to produce between layers after cover annealing in order to prevent
Seriously bonding, the application use following corrective measure: control annealing temperature and time, and are opened in stretch-bending straightening using small batch
Power, control finished products volume make control of material reasonably roll up weight again, in cover annealing using self-control charging tray, make upper layer charging tray
It is not directly contacted with lower layer's material volume, while red copper band is wrapped up by red copper foil in annealing, and has protective atmosphere in bell furnace
Protection, after above-mentioned corrective measure, after final cover annealing red copper band be fully achieved do not bond, do not aoxidize, performance it is good
Good effect, can be using direct shearing as finished product.
To sum up, this application provides a kind of preparation methods being flexible coupling with copper belt, will be cold in the production of traditional copper belt
It rolls and is changed to air-cushion type continuous annealing furnace annealing in the cover annealing that rolling process processed and cold rolling are kept on file in rolling process, and by traditional copper belt
The air-cushion type continuous annealing furnace annealing in cold rolling finished product rolling process in production is changed to cover annealing, and carries out to cover annealing
Many places improvement, thus both solved the problems, such as that traditional copper belt was easy to be pulled off when air-cushion type continuous annealing furnace is advanced,
Solve the problems, such as that traditional copper belt is easy to produce serious bonding between layers after cover annealing again, and the application is to moving back
The improvement of fire process does not have an impact the performance of finished product copper belt, and the performance of the finished product copper belt of production is completely up to standard, meets mark
The quasi- needs with client.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions only further illustrate feature and advantage of the invention, rather than to the limit of the claims in the present invention
System.
This application provides a kind of preparation method being flexible coupling with copper belt, include the steps that next coming in order carry out:
1) melting and casting: virgin material copper and production feed back copper are launched into melting in smelting furnace according to a certain percentage, then
Casting, obtain ingot casting, the ingot casting includes the component of following mass percent: content≤0.001% of P, impurity element it is total
Content≤0.01%, the Cu of surplus；
2) hot rolling: the ingot casting that step 1) is obtained carries out hot rolling treatment, carries out in stepping furnace before hot rolling to the ingot casting
Heating, the tapping temperature of the ingot casting are 840 DEG C~870 DEG C, and discharging step-length is 10min/ root, and heating time is 3.5h~4h,
Ensuring that ingot casting temperature is uniform before coming out of the stove, hot rolling uses 7 passes, and finishing temperature control obtains ingot blank at 560 DEG C~580 DEG C,
The ingot blank with a thickness of 15mm~17mm, width is 658mm~662mm；
3) mill face: the upper and lower surface of the ingot blank that step 2) is obtained carries out milling, the overall thickness of two-sided milling be 0.6mm~
0.8mm, Milling Speed≤4.5m/min, milling cutter revolving speed are 770r/s~800r/s, and the transverse gage tolerance of ingot blank is behind milling face
± 0.01mm, longitudinal thickness tolerance are ± 0.015mm；
4) cold rolling cogging rolling process: the ingot blank behind the milling face that step 3) is obtained carries out cold rolling cogging rolling process and handles, including according to
The cold rolling cogging of secondary progress, trimming and cleaning, the cold rolling cogging use 8 passes, 8 passage thickness behind milling face
Finish to gauge thickness be followed successively by 11mm-8.15mm-5.7mm-3.8mm-2.5mm-1.67mm-1.2mm-1.0mm, obtain with a thickness of
The copper belt of 1.0mm, thickness deviation are ± 0.01mm；
5) cold rolling is in rolling process processed: the copper belt that step 4) obtains being carried out cold rolling and is handled in rolling process processed, including is successively carried out
In system rolling and annealing, described to use 4 passes in system rolling, the finish to gauge thickness of 4 passages is followed successively by 0.78mm-
0.59mm-0.5mm-0.4mm, obtains the copper belt with a thickness of 0.4mm, and thickness deviation is+0-0.01mm；
6) cold rolling is kept on file rolling process: the copper belt that step 5) obtains being carried out cold rolling and is kept on file rolling process processing, including is successively carried out
Keep on file to roll and anneal, using 2 passes, the finish to gauge thickness of 2 passages is followed successively by 0.24mm- for the rolling of keeping on file
0.2mm, obtains the copper belt with a thickness of 0.2mm, and thickness deviation is+0-0.01mm；
7) cold rolling finished product rolling process: the copper belt that step 6) is obtained carries out the processing of cold rolling finished product rolling process, including successively carries out
Finished product rolling, cleaning, stretch-bending straightening, annealing and cutting, finished product rolling uses 1 passes, and the rolling of 1 passage will
It is rolled into the copper belt with a thickness of 0.1mm with a thickness of the copper belt of 0.2mm, thickness deviation is+0-0.01mm, is obtained after the completion
Copper belt is used in being flexible coupling for finished product；
Annealing in the step 5) and step 6), is annealed using air-cushion type continuous annealing furnace, and the air-cushion type connects
The temperature control in the continuous area annealing furnace Fen Wugelu, a respectively preheating zone, three heating zones and a cooling zone, heating zone exists
630 DEG C~660 DEG C, out behind cooling zone copper belt surface temperature≤65 DEG C, according to the thickness of band copper belt adjust copper belt
Travel speed in air-cushion type continuous annealing furnace, to guarantee hardness≤HV70 of copper belt behind cooling zone out, grain size≤
0.02mm；
Annealing in the step 7), is annealed using bell furnace, and annealing temperature is 280 DEG C, soaking time 4.5h,
70 DEG C of tapping temperature <.
In one embodiment of the application, annealing in the step 7), annealing atmosphere is the mixing of hydrogen and nitrogen
Property gas, the volume of hydrogen: volume=75:25 of nitrogen, dew point≤70ppm of mixed gases, the oxygen in mixed gases
Volumetric concentration≤3ppm of gas.
In one embodiment of the application, annealing in the step 7): rouleau reannealing is taken, by the step 7)
In stretch-bending straightening come control volume weight, control standard are as follows: supplied materials be less than 3000Kg volume weight, not make annealing treatment；Carry out material volume weight
When for 3000-5500Kg, it is divided into up and down volume two, and controlling lower layer's material volume weight is 1500-2750Kg；Carrying out material volume weight is 5600-
When 6400Kg, it is divided into upper, middle and lower volume three, and controlling lower layer's material volume weight is 1860-2100Kg.
In one embodiment of the application, the surrounding of charging tray used in the annealing in the step 7) is provided with support
Column, to cause to glue for making upper layer charging tray be not directly contacted with lower layer's material volume, upper layer charging tray pressure being prevented in annealing to put layered material volume down
Knot.
In one embodiment of the application, annealing in the step 7): using red copper foil by 0.1mm thickness before annealing
Copper belt carry out complete looping with for must not exposed inner copper belt material volume.
In one embodiment of the application, stretch-bending straightening in the step 7): once purged 0.1mm thickness copper belt
Improve the template of entire volume band by stretch-bending straightening, and the coiling tension setting unit tension during control stretch-bending straightening is little
In 15N/mm2。
In one embodiment of the application, the cleaning includes pickling, alkali cleaning, washing and the drying successively carried out；
The concentration expressed in percentage by volume of spent pickling acid liquid is 7%~15%, and acid liquor temperature is room temperature；
The concentration expressed in percentage by volume of alkali cleaning lye is 2%~4%, and alkali liquid temperature is 70 DEG C~80 DEG C；
Washing uses 60~80 DEG C of hot water temperature；
Drying temperature is at 70 DEG C or more.
In one embodiment of the application, the cleaning in the step 7) further includes Passivation Treatment, and Passivation Treatment is located at
Between washing and drying, the concentration expressed in percentage by volume of passivating solution is 0.1%-0.15%, and the temperature of passivating solution is 60~80 DEG C.
Raw material, method and device that the present invention does not elaborate etc. are the prior art.
For a further understanding of the present invention, a kind of it is flexible coupling with copper belt below with reference to embodiment to provided by the invention
Preparation method is described in detail, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
Below with the C1100 trade mark, for 0.1mm × 305m, tolerance+0-0.01mm, red copper strip specification: is used to being flexible coupling
Production and processing technology be described in detail:
A kind of preparation method being flexible coupling with copper belt includes the steps that next coming in order carry out:
1) melting and casting: virgin material copper and production feed back copper are launched into melting in smelting furnace according to a certain percentage, then
Casting, obtain ingot casting, the ingot casting includes the component of following mass percent: content≤0.001% of P, impurity element it is total
Content≤0.01%, the Cu of surplus；
2) hot rolling: the ingot casting that step 1) is obtained carries out hot rolling treatment, carries out in stepping furnace before hot rolling to the ingot casting
Heating, the tapping temperature of the ingot casting are 840 DEG C~870 DEG C, and discharging step-length is 10min/ root, and heating time is 3.5h~4h,
Ensuring that ingot casting temperature is uniform before coming out of the stove, hot rolling uses 7 passes, and finishing temperature control obtains ingot blank at 560 DEG C~580 DEG C,
The ingot blank with a thickness of 16.01mm, width 659mm；
3) mill face: the upper and lower surface for the ingot blank that step 2) is obtained carries out milling, and the overall thickness of two-sided milling is 0.6mm,
Milling Speed≤4.5m/min, milling cutter revolving speed are 770r/s~800r/s, behind milling face the transverse gage tolerance of ingot blank be ±
0.01mm, longitudinal thickness tolerance are ± 0.015mm, ingot blank with a thickness of 14.8mm behind milling face；
4) cold rolling cogging rolling process: the ingot blank behind the milling face that step 3) is obtained carries out cold rolling cogging rolling process and handles, including according to
The cold rolling cogging of secondary progress, trimming and cleaning, the cold rolling cogging use 8 passes, 8 passage thickness behind milling face
Finish to gauge thickness be followed successively by 11mm-8.15mm-5.7mm-3.8mm-2.5mm-1.67mm-1.2mm-1.0mm, obtain with a thickness of
The copper belt of 1.0mm, thickness deviation are ± 0.01mm；
Then through thicker strip slitting trimming, the width of copper belt is 630mm after trimming, will cut the band on side through over cleaning；
This step 4) in cleaning include the pickling, alkali cleaning, washing and the drying that successively carry out；
The concentration expressed in percentage by volume of spent pickling acid liquid is 7%~15%, and acid liquor temperature is room temperature；
The concentration expressed in percentage by volume of alkali cleaning lye is 2%~4%, and alkali liquid temperature is 70 DEG C~80 DEG C；
Washing uses 60~80 DEG C of hot water temperature；
Drying temperature is at 70 DEG C or more；
Brush is used in cleaning: the brush includes 800 mesh abrasive brush and 1500 mesh polish brushes, and drafts is according to copper strips table
Face is adjusted, and obtained red copper belt surface is stenciled uniform and bright；
Drying temperature is at 70 DEG C or more；
5) cold rolling is in rolling process processed: the copper belt that step 4) obtains being carried out cold rolling and is handled in rolling process processed, including is successively carried out
In system rolling and annealing, described to use 4 passes in system rolling, the finish to gauge thickness of 4 passages is followed successively by 0.78mm-
0.59mm-0.5mm-0.4mm, obtains the copper belt with a thickness of 0.4mm, and thickness deviation is+0-0.01mm；
Annealing in the step 5) is annealed using air-cushion type continuous annealing furnace；
The area air-cushion type continuous annealing furnace Fen Wugelu, respectively a preheating zone, three heating zones and a cooling
Area, the temperature of heating zone are controlled at 630 DEG C~660 DEG C, out behind cooling zone copper belt surface temperature≤65 DEG C, connect through air-cushion type
There is not bonding defect in strip surface after continuous anneal；
Travel speed of the copper belt in air-cushion type continuous annealing furnace is adjusted according to the thickness of band copper belt, copper belt is thick
When degree is 0.4mm, travel speed 65m/min, hardness≤HV70 of the copper belt obtained behind cooling zone out, crystal grain is uniform, brilliant
Granularity≤0.02mm；
6) cold rolling is kept on file rolling process: the copper belt that step 5) obtains being carried out cold rolling and is kept on file rolling process processing, including is successively carried out
Keep on file to roll and anneal, using 2 passes, the finish to gauge thickness of 2 passages is followed successively by 0.24mm- for the rolling of keeping on file
0.2mm, obtains the copper belt with a thickness of 0.2mm, and thickness deviation is+0-0.01mm；
Annealing in the step 6) is annealed using air-cushion type continuous annealing furnace；
The area air-cushion type continuous annealing furnace Fen Wugelu, respectively a preheating zone, three heating zones and a cooling
Area, the temperature of heating zone are controlled at 630 DEG C~660 DEG C, out behind cooling zone copper belt surface temperature≤65 DEG C, connect through air-cushion type
There is not bonding defect in strip surface after continuous anneal；
Travel speed of the copper belt in air-cushion type continuous annealing furnace is adjusted according to the thickness of band copper belt, copper belt is thick
When degree is 0.2mm, travel speed 90m/min, hardness≤HV70 of the copper belt obtained behind cooling zone out, crystal grain is uniform, brilliant
Granularity≤0.02mm；
7) cold rolling finished product rolling process: the copper belt that step 6) is obtained carries out the processing of cold rolling finished product rolling process, including successively carries out
Finished product rolling, cleaning, stretch-bending straightening, annealing and cutting, finished product rolling uses 1 passes, and the rolling of 1 passage will
It is rolled into the copper belt with a thickness of 0.1mm with a thickness of the copper belt of 0.2mm, thickness deviation is+0-0.01mm, is obtained after the completion
Copper belt is used in being flexible coupling for finished product；
This step 7) in cleaning include the pickling, alkali cleaning, the washing that successively carry out, passivation and drying；
Spent pickling acid liquid concentration is 9.9%, and acid liquor temperature is room temperature；The concentrated sulfuric acid that acid used is 98%；
Alkali cleaning concentration of lye 2.3%, alkali liquid temperature are 72 DEG C；
Washing uses 70 DEG C of hot water temperature；
The concentration of passivating solution is 0.1%-0.15%, and temperature is 60~80 DEG C；
Drying temperature is 82 DEG C；
Brush is not used in cleaning；
Then, stretch-bending straightening is carried out using stretch bending-straightening machine to the copper belt cleaned, copper belt prolongs when stretch-bending straightening
Stretching rate is 0.15%, and coiling tension sets unit tension as 12N/mm2, to improve the template of copper belt, and can guarantee rear
Bonding is not generated between layers when continuous cover annealing；
This coiled strip rolls up weight 5300kg, this volume copper belt is divided into volume two in stretch-bending straightening, volume be respectively again 2700kg and
The material volume of 2600kg；
Then, it is annealed using bell furnace to the copper belt after stretch-bending straightening, to the bundling when stretch bending is rectified before annealing
Copper belt carries out looping with red copper foil, and annealing temperature is 280 DEG C, soaking time 4.5h, tapping temperature < 70 DEG C, and when annealing adopts
With self-control charging tray, protective atmosphere is the mixed gases of 75% (percentage by volume) hydrogen and 25% (percentage by volume) nitrogen,
Dew point≤70ppm of mixed gases, volumetric concentration≤3ppm of the oxygen in mixed gases, red copper belt surface light after annealing
Bright, soap-free emulsion polymeization, non-oxidation grey black can directly cut finished product.
In embodiment 1, there is no belt phenomenons when copper belt is annealed in air-cushion type continuous annealing furnace, and copper belt exists
Also there is no bonding phenomena between layers after cover annealing, and test to finished product copper belt, the item of product inspection
Mesh includes: the parameters such as surface quality, tolerance, plate shape, mechanical performance, chemical component, grain size, the tensile strength of finished product copper belt
For 245MPa, elongation percentage 31%, hardness HV is 60, conductivity 100.23, mean grain size 0.011mm, it is seen that the present embodiment 1
Do not have an impact the performance of finished product copper belt to the improvement of annealing process, the performance of the finished product copper belt of production is completely up to standard, symbol
The needs of standardization and client.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (8)
1. a kind of preparation method being flexible coupling with copper belt, which is characterized in that include the steps that next coming in order carry out:
1) melting and casting: launching melting in smelting furnace for virgin material copper and production feed back copper according to a certain percentage, then cast,
Ingot casting is obtained, the ingot casting includes the component of following mass percent: content≤0.001% of P, the total content of impurity element≤
0.01%, the Cu of surplus；
2) hot rolling: the ingot casting that step 1) is obtained carries out hot rolling treatment, heats in stepping furnace before hot rolling to the ingot casting,
The tapping temperature of the ingot casting is 840 DEG C~870 DEG C, and discharging step-length is 10min/ root, and heating time is 3.5h~4h, before coming out of the stove
Ensure that ingot casting temperature is uniform, hot rolling uses 7 passes, and finishing temperature control obtains ingot blank, the ingot at 560 DEG C~580 DEG C
Base with a thickness of 15mm~17mm, width is 658mm~662mm；
3) mill face: the upper and lower surface of the ingot blank that step 2) is obtained carries out milling, the overall thickness of two-sided milling be 0.6mm~
0.8mm, Milling Speed≤4.5m/min, milling cutter revolving speed are 770r/s~800r/s, and the transverse gage tolerance of ingot blank is behind milling face
± 0.01mm, longitudinal thickness tolerance are ± 0.015mm；
4) cold rolling cogging rolling process: ingot blank behind the milling face that step 3) is obtained carries out the processing of cold rolling cogging rolling process, including successively into
Capable cold rolling cogging, trimming and cleaning, the cold rolling cogging use 8 passes, behind milling face thickness 8 passages end
It rolls thickness and is followed successively by 11mm-8.15mm-5.7mm-3.8mm-2.5mm-1.67mm-1.2mm-1.0mm, obtain with a thickness of 1.0mm
Copper belt, thickness deviation be ± 0.01mm；
5) cold rolling is in rolling process processed: copper belt that step 4) obtains being carried out cold rolling handles in rolling process processed, including successively carrying out
System rolling and annealing, described to use 4 passes in system rolling, the finish to gauge thickness of 4 passages is followed successively by 0.78mm-0.59mm-
0.5mm-0.4mm, obtains the copper belt with a thickness of 0.4mm, and thickness deviation is+0-0.01mm；
6) cold rolling is kept on file rolling process: the copper belt that step 5) obtains being carried out cold rolling and is kept on file rolling process processing, is stayed including what is successively carried out
Bottom rolling and annealing, using 2 passes, the finish to gauge thickness of 2 passages is followed successively by 0.24mm-0.2mm, obtains for the rolling of keeping on file
To the copper belt with a thickness of 0.2mm, thickness deviation is+0-0.01mm；
7) cold rolling finished product rolling process: the copper belt that step 6) is obtained carries out the processing of cold rolling finished product rolling process, including successively carry out at
Product rolling, cleaning, stretch-bending straightening, annealing and cutting, finished product rolling use 1 passes, and the rolling of 1 passage is by thickness
It is rolled into the copper belt with a thickness of 0.1mm for the copper belt of 0.2mm, thickness deviation is+0-0.01mm, obtains finished product after the completion
Be flexible coupling and use copper belt；
Annealing in the step 5) and step 6), is annealed, the air-cushion type is continuously moved back using air-cushion type continuous annealing furnace
The temperature of the area stove Fen Wugelu, respectively a preheating zone, three heating zones and a cooling zone, heating zone is controlled 630
DEG C~660 DEG C, out behind cooling zone copper belt surface temperature≤65 DEG C, according to the thickness of band copper belt adjust copper belt in gas
Travel speed in cushion continuous annealing furnace, to guarantee hardness≤HV70 of copper belt behind cooling zone out, grain size≤0.02mm；
Annealing in the step 7), is annealed using bell furnace, and annealing temperature is 280 DEG C, and soaking time 4.5h comes out of the stove
70 DEG C of temperature <.
2. preparation method according to claim 1, which is characterized in that the annealing in the step 7), annealing atmosphere are hydrogen
The mixed gases of gas and nitrogen, the volume of hydrogen: volume=75:25 of nitrogen, dew point≤70ppm of mixed gases are mixed
Volumetric concentration≤3ppm of oxygen in conjunction property gas.
3. preparation method according to claim 2 again, which is characterized in that the annealing in the step 7): rouleau is taken to move back
Fire is controlled volume weight by the stretch-bending straightening in the step 7), controls standard are as follows: supplied materials is less than the volume weight of 3000Kg, not moves back
Fire processing；Come material volume weight be 3000-5500Kg when, be divided into up and down volume two, and control lower layer's material volume weight be 1500-2750Kg；Come
When material volume weight is 5600-6400Kg, it is divided into upper, middle and lower volume three, and controlling lower layer's material volume weight is 1860-2100Kg.
4. preparation method according to claim 3, which is characterized in that charging tray used in the annealing in the step 7)
Surrounding is provided with support column, for making upper layer charging tray be not directly contacted with lower layer's material volume, preventing the upper layer charging tray pressure in annealing from putting
Lower layer's material volume causes to bond.
5. the preparation method according to claim 4, which is characterized in that the annealing in the step 7): used before annealing
0.1mm thickness copper belt is carried out complete looping must not be used for the copper belt material volume of exposed inner by red copper foil.
6. preparation method according to claim 5, which is characterized in that the stretch-bending straightening in the step 7): once purged
0.1mm thickness copper belt by stretch-bending straightening improve entire volume band template, and control stretch-bending straightening during coiling tension
It sets unit tension and is not more than 15N/mm2。
7. preparation method according to claim 1, which is characterized in that it is described cleaning include successively carry out pickling, alkali cleaning,
Washing and drying；
The concentration expressed in percentage by volume of spent pickling acid liquid is 7%~15%, and acid liquor temperature is room temperature；
The concentration expressed in percentage by volume of alkali cleaning lye is 2%~4%, and alkali liquid temperature is 70 DEG C~80 DEG C；
Washing uses 60~80 DEG C of hot water temperature；
Drying temperature is at 70 DEG C or more.
8. preparation method according to claim 7, which is characterized in that the cleaning in the step 7) further includes at passivation
Reason, Passivation Treatment are located between washing and drying, and the concentration expressed in percentage by volume of passivating solution is 0.1%-0.15%, the temperature of passivating solution
It is 60~80 DEG C.
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