CN110060871A - A kind of preparation method of aluminium electrolutic capacitor 1XXX series cathode foil - Google Patents
A kind of preparation method of aluminium electrolutic capacitor 1XXX series cathode foil Download PDFInfo
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- CN110060871A CN110060871A CN201910273205.XA CN201910273205A CN110060871A CN 110060871 A CN110060871 A CN 110060871A CN 201910273205 A CN201910273205 A CN 201910273205A CN 110060871 A CN110060871 A CN 110060871A
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- cathode foil
- foil
- electrolutic capacitor
- aluminium electrolutic
- 1xxx series
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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
- B21B1/40—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 foils which present special problems, e.g. because of thinness
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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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
- C22C1/026—Alloys based on aluminium
-
- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- 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
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/0425—Electrodes or formation of dielectric layers thereon characterised by the material specially adapted for cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
Abstract
The invention discloses a kind of aluminium electrolutic capacitor production methods of 1XXX series cathode foil.Method includes the following steps: preparing the cast-rolling stock of 5.5~7.5mm by component and mass percent；Cold rolling and foil roll: cast-rolling stock is rolled to obtain the 1XXX series cathode foil of 0.02~0.06mm by cold rolling and foil.The manufacturing method of the present invention can be avoided because Hot rolling production aluminium electrolutic capacitor 1XXX series cathode foil product ingot structure is coarse, it is asymmetric and caused by roll sideslip, breach, deformed steel strip, lumber recovery is low, a series of problems, such as security risk, after the casting volume of production is rolled down to finished product thickness, second phase size is more tiny than the product that Hot rolling produces, the second phase that the distribution of second phase is rolled down to finished product than Hot rolling is more evenly distributed, it is more conducive to the erosion uniformity of aluminium electrolutic capacitor 1XXX series cathode foil, 0.020~0.060mm of finished product thickness, the tensile strength of O state or H22 Cathode Foil is 55~100MPa, tensile strength >=170MPa of H18 Cathode Foil, the tensile strength of H24 Cathode Foil is 110~150MPa.
Description
Technical field
The present invention relates to aluminium electrolutic capacitor aluminium foil technical fields, use more particularly, to a kind of aluminium electrolutic capacitor
The preparation method of 1XXX series cathode foil.
Background technique
Cathode electronics aluminium foil is one of the important raw material for manufacturing aluminium electrolutic capacitor.Currently used for preparing cathode electronics aluminium
The common used material of foil is fine aluminium (1XXX system), aluminum bronze (2XXX) and aluminium manganese (3XXX).In existing disclosed document, using casting
The aluminium electrolutic capacitor of method production usually needs to carry out with 1XXX series cathode foil during casting volume is rolled down to finished product thickness
Heat treatment, or produced using Hot rolling.Prior art CN105908021A discloses a kind of capacitor fine aluminium Cathode Foil
And its manufacture, for be exactly that common Cathode Foil corrodes non-uniform problem, but there is still a need for carry out accordingly in its production technology
Heat treatment.Prior art Japanese Laid-Open Patent Publication 07-090519, Japanese Laid-Open Patent Publication 7-180008, special open 2002-47522, special open 2001-294960,
Special open 2010-248551 and special open 2008-78277 is the Hot rolling production capacitor fine aluminium Cathode Foil used.And it is true
On for purity 99.85% or more aluminium electrolutic capacitor with 1XXX series cathode foil using Hot rolling produce when, ingot structure
This coarse, asymmetric phenomenon can not be solved in casting process, lead to occur sideslip often in hot rolling, cause breach and plate shape not
Good, lumber recovery is low, high production cost, even will cause material volume when sideslip is serious and runs out of roller-way, breaks equipment, causes safety hidden
Suffer from.How to promote the uniformity of the tissue in Cathode Foil production process also and be always cathode electronics aluminium foil technology difficulties and
Emphasis.
Therefore, the present invention provides a kind of method of casting production aluminium electrolutic capacitor 1XXX series cathode foil, can obtain
With the Hot rolling aluminium electrolutic capacitor identical specific volume of 1XXX series cathode foil, and can avoid because ingot structure it is uneven caused by one
Serial unusual condition.It is of great significance for aluminium electrolutic capacitor with the manufacturing method of 1XXX series cathode foil.
Summary of the invention
The technical problem to be solved by the present invention is to overcome existing aluminium electrolutic capacitors in 1XXX series cathode foil preparation process
The defects of it is uneven to be easy to appear ingot structure, sideslip, breach and deformed steel strip are easy to appear in course of hot rolling and deficiency, provide
A kind of manufacturing method of aluminium electrolutic capacitor 1XXX series cathode foil.Preparation method of the invention does not use refining agent, does not add
Grain refiner is not necessarily to any heat treatment before product is rolled down to finished product thickness；The manufacturing method of the present invention is prepared
Have excellent specific volume and mechanical property.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of manufacturing method of aluminium electrolutic capacitor 1XXX series cathode foil, method includes the following steps:
S1. by the cast-rolling stock of 5.5~7.5mm of following component and mass percent preparation: Al >=99.85%, Si≤
350ppm, Fe≤400ppm, Cu≤100ppm, Mg≤200ppm, Zn≤200ppm, Ti≤50ppm, Mn≤50ppm；
S2. cold rolling and foil roll: the cast-rolling stock obtained in S1 is rolled to obtain 0.02~0.06mm's by cold rolling and foil
1XXX series cathode foil.
The present invention produces aluminium electrolutic capacitor 1XXX series cathode foil using casting and roll process, and production procedure is short, needs not move through heat
Process is rolled, the intermediate maturity of Microstructure of roll casting will not be generated, can effectively avoid the problem that nonuniform organization.The present invention avoids
Hot rolling cathode foil for aluminum electrolytic capacitors product ingot structure it is uneven and caused by rolling sideslip, breach, deformed steel strip,
A series of problems, such as lumber recovery is low, security risk, and obtain the comparable specific volume of the congruent product of Hot rolling that can match in excellence or beauty.
Production technology of the present invention for the 1XXX series cathode foil of different material states specifically:
H22/H24/0 state material: casting-cold rolling-trimming-cold rolling-trimming-centre cleaning-foil rolls-finished product cleaning-cutting-at
Product annealing；
Or: casting-cold rolling-trimming-cold rolling-centre cleaning-foil rolls-finished product cleaning-cutting-finished products；
Or: casting-cold rolling-trimming-cold rolling-centre cleaning-foil rolls-finished product cleaning-finished products-cutting,
Depending on the case where trimming and the main seeing image of cleaning ring product surface quality, trimming twice is preferably carried out.
H18 state material: casting-cold rolling-trimming-cold rolling-trimming-centre cleaning-foil rolls-is cut；
Or: casting-cold rolling-trimming-centre cleaning-foil rolls-is cut,
Depending on the case where trimming and the main seeing image of cleaning ring product surface quality, considers product lumber recovery, preferably carry out two
Secondary trimming.
The product of the O state or H22 that are prepared using method of the invention with a thickness of 0.040~0.060mm, tension is strong
Spend 55~100MPa；The product of H18 or H24 with a thickness of 0.020~0.040mm, when Product Status is H18, tensile strength
>=170MPa, when Product Status is H24, tensile strength is in 110~150MPa.
Wherein the thickness of cast-rolling stock can be 5.7mm, 5.8mm, 6.1mm, 7.1mm, preferably 6.1mm in S1.
Preferably, the second phase of the 1XXX series cathode foil is spherical, needle-shaped or hexagon.Of different shapes second is opposite
The influence of rolling is different, and the second phase shape of the invention is conducive to smoothly roll.
Preferably, the 1XXX series cathode foil is H18 state, and the second phase size is less than 2.0 μm.
Preferably, in the preparation method before the 1XXX series cathode foil of rolling 0.02~0.06mm, without any
Heat treatment.Heat treatment causes second mutually very few or too small, is unfavorable for subsequent corrosion, preparation method of the invention without overheat at
Reason is conducive to the formation of the second phase, is conducive to the processing of subsequent electrode foil.
Preferably, the preparation process of cast-rolling stock described in S1 are as follows: each component and mass percent in adjustment melt, control
Melt temperature is 730 DEG C~760 DEG C, is passed through nitrogen or argon gas, refines 12~30 minutes, is then allowed to stand 15~30 minutes, is removed the gred,
Temperature is controlled at 735 DEG C -750 DEG C, degasification, filtration, purification processing, casting obtain cast-rolling stock.
Wherein the casting is continuous casting and rolling, and casting temperature is 685~710 DEG C, and roll casting speed is 700~1100mm/
min.Casting temperature can be 690 ± 5 DEG C, 695 ± 5 DEG C or 705 ± 5 DEG C.
Preferably, the degasification is carried out in nitrogen atmosphere using the hydrogen in purification for argon molten aluminum, the slag operation that removes,
It is removed the gred more than twice.Repeatedly slagging-off can make surface fluorine slag remove more abundant, using using in purification for argon molten aluminum
Hydrogen, hydrogen content is in 0.12ml/100gAl or less after degasification.
Preferably, the degasification rotate penetrating argon gas into molten aluminum using silicon nitride rotor, rotor speed control 400~
550r/min。
Preferably, the degasification rotate penetrating argon gas into molten aluminum using graphite rotator, rotor speed control 360~
500r/min。
Preferably, material temperature≤150 DEG C after each passes are rolled in cold rolling and foil described in S2.
Preferably, the 1XXX series cathode foil is H22, H24 or O state, further includes finished products operation, and the temperature of annealing is
255~350 DEG C, annealing time is 6~30h.
Annealing temperature influences the final tensile strength and surface quality of product, by the annealing operation for controlling Related product
Temperature and time can make product obtain more stable tensile strength and more excellent surface quality.Surface quality of the invention
It is primarily referred to as viscous this surface defect of foil, can annealing temperature and time be different, and the degree for gluing foil is different, glue the degree of foil with from
It is standard by uncoiling, Internal and external cycle can realize complete free uncoiling under currently preferred annealing process.
Preferably, the temperature of finished products is 270~310 DEG C, and annealing time is 10~25h.Such as can be 280 DEG C,
16h, 288 DEG C, 14h, 295 DEG C, 12h or 305 DEG C, 25h.
Compared with prior art, the beneficial effects of the present invention are:
(1) the present invention provides a kind of casting and roll processes to produce the aluminium electrolutic capacitor manufacturing method of 1XXX series cathode foil, can
To avoid rolling caused by due to Hot rolling production aluminium electrolutic capacitor is coarse, asymmetric with 1XXX series cathode foil product ingot structure
A series of problems, such as sideslip processed, breach, deformed steel strip, lumber recovery be low, security risk；
(2) after present invention casting volume produced is rolled down to finished product thickness, the second phase size is than the product that Hot rolling produces
More tiny, the second phase that the distribution of the second phase is rolled down to finished product than Hot rolling is more evenly distributed, and is more conducive to aluminium electrolutic capacitor
With the erosion uniformity of 1XXX series cathode foil；
(3) after production method casting of the invention rolls out, the operation of rolling is without heat treatment, Direct Rolling to finished product thickness
0.020~0.060mm；
(4) the O state of production method of the invention production or the tensile strength of H22 Cathode Foil are 55~100MPa, H18 cathode
Tensile strength >=170MPa of foil, the tensile strength of H24 Cathode Foil are 110~150MPa.
Detailed description of the invention
Fig. 1 is the distribution map of the Cathode Foil of comparative example 1,.
Fig. 2 is the size scanning electron microscope of the Cathode Foil of comparative example 1.
Fig. 3 is the distribution map of the Cathode Foil of embodiment 2.
Fig. 4 is the size scanning electron microscope of the Cathode Foil of embodiment 2.
Fig. 5 is the distribution map of the Cathode Foil of embodiment 4.
Fig. 6 is the size scanning electron microscope of the Cathode Foil of embodiment 4.
Fig. 7 is the distribution map of the Cathode Foil of embodiment 6.
Fig. 8 is the size scanning electron microscope of the Cathode Foil of embodiment 6.
Fig. 9 is the distribution map of the Cathode Foil of embodiment 7.
Figure 10 is the size scanning electron microscope of the Cathode Foil of embodiment 7.
Specific embodiment
The present invention is further illustrated With reference to embodiment, but embodiment the present invention is not done it is any
The restriction of form.Unless otherwise indicated, source chemicals used in the embodiment of the present invention are the source chemicals routinely bought.
The detection method of tensile strength are as follows: GB/T228 is also possible to GB/T16865
Embodiment 1
A kind of manufacturing method of aluminium electrolutic capacitor 1XXX series cathode foil, method includes the following steps:
S1. cast-rolling stock is prepared by following component and mass percent: carrying out ingredient by 1 alloying component of table, control melting
745 DEG C of furnace temperature, it is passed through nitrogen, is refined 15 minutes, after sampling analysis adjustment is qualified after slagging-off, stirring sufficiently, is transferred to standing furnace,
20 minutes are stood, stands 736 DEG C of furnace temperature, standing furnace refining slagging-off, using being sent into casting after silicon nitride rotor 505rpm degasification
Machine, obtains the casting volume of 7.1mm by 697 DEG C of casting temperature, roll casting speed 730mm/min after casting；
S2. cold rolling and foil roll: the cast-rolling stock obtained in S1 being rolled to obtain the 1XXX system yin of 0.022mm by cold rolling and foil
Pole foil, cold rolling and foil roll material temperature≤150 DEG C after each passes.
Alloying component such as table 1.
1. embodiment of table, 1 ingredient
Casting volume is cold, foil rolls finished product thickness, does not during which need to carry out any heat treatment.Finished product thickness 0.022mm specification,
Product Status is H18 state, product strength 192MPa.Product specific volume after client A producer is on probation is qualified.
Embodiment 2
Casting volume is obtained according to embodiment 1, casting volume is rolled by cold rolling-trimming-cold rolling-trimming-centre cleaning-foil
Product thickness-finished product cleaning-cutting-finished products does not need to carry out any heat treatment, finished product thickness before being rolled down to finished product thickness
0.050mm specification, Product Status are O state, and finished product annealing process: 305 DEG C of * 25h, product strength 56MPa, product is through client B factory
Specific volume is qualified after family is on probation, reaches the 100.6% of hot rolling material specific volume.
Embodiment 3
A kind of manufacturing method of aluminium electrolutic capacitor 1XXX series cathode foil, method includes the following steps:
S1. cast-rolling stock is prepared by following component and mass percent: carrying out ingredient by 1 alloying component of table, control melting
737 DEG C of furnace temperature, it is passed through nitrogen, is refined 15 minutes, after sampling analysis adjustment is qualified after slagging-off, stirring sufficiently, is transferred to standing furnace,
20 minutes are stood, stands 730 DEG C of furnace temperature, standing furnace refining slagging-off, using being sent into casting after silicon nitride rotor 505rpm degasification
Machine, obtains the casting volume of 5.8mm by 688 DEG C of casting temperature, roll casting speed 950mm/min after casting；
S2. cold rolling and foil roll: the cast-rolling stock obtained in S1 being rolled to obtain the 1XXX system yin of 0.022mm by cold rolling and foil
Pole foil, cold rolling and foil roll material temperature≤150 DEG C after each passes.
Alloying component such as table 2.
2 embodiment of table, 3 ingredient three
Casting volume is cold, foil rolls finished product thickness, does not during which need to carry out any heat treatment.Finished product thickness 0.022mm specification,
Product Status is H18 state, product strength 196MPa.Product specific volume after client A producer is on probation is qualified.
Embodiment 4
Casting volume is obtained according to implementation 3, casting volume rolls finished product by cold rolling-trimming-cold rolling-trimming-centre cleaning-foil
Thickness-finished product cleaning-cutting-finished products does not need to carry out any heat treatment, finished product thickness before being rolled down to finished product thickness
0.048mm specification, Product Status are H22 state, and finished product annealing process: 280 DEG C of * 16h, product strength 71MPa, product is through client C
Specific volume is qualified after producer is on probation, reaches the 103.5% of hot rolling material specific volume.
Embodiment 5
A kind of manufacturing method of aluminium electrolutic capacitor 1XXX series cathode foil, method includes the following steps:
S1. cast-rolling stock is prepared by following component and mass percent: carrying out ingredient by 3 alloying component of table, control melting
760 DEG C of furnace temperature, it is passed through nitrogen, is refined 15 minutes, after sampling analysis adjustment is qualified after slagging-off, stirring sufficiently, is transferred to standing furnace,
20 minutes are stood, stands 748 DEG C of furnace temperature, standing furnace refining slagging-off, using being sent into casting after silicon nitride rotor 480rpm degasification
Machine, obtains the casting volume of 6.1mm by 706 DEG C of casting temperature, roll casting speed 850mm/min after casting；
S2. cold rolling and foil roll: the cast-rolling stock obtained in S1 being rolled to obtain the 1XXX system yin of 0.022mm by cold rolling and foil
Pole foil, cold rolling and foil roll material temperature≤150 DEG C after each passes.
3 embodiment of table, 5 ingredient
Casting volume is cold, foil rolls finished product thickness, does not during which need to carry out any heat treatment.Finished product thickness 0.022mm specification,
Product Status is H18 state, product strength 204MPa.Product specific volume after client A producer is on probation is qualified.
Embodiment 6
Casting volume is obtained according to embodiment 5, casting volume is rolled by cold rolling-trimming-cold rolling-trimming-centre cleaning-foil
Product thickness-finished product cleaning-cutting-finished products does not need to carry out any heat treatment, finished product thickness before being rolled down to finished product thickness
0.050mm specification, Product Status are H22 state, and finished product annealing process: 295 DEG C of * 12h, product strength 80MPa, product is through client B
Specific volume is qualified after producer is on probation, reaches the 100.2% of hot rolling material specific volume.
Embodiment 7
A kind of manufacturing method of aluminium electrolutic capacitor 1XXX series cathode foil, method includes the following steps:
S1. cast-rolling stock is prepared by following component and mass percent: carrying out ingredient by 4 alloying component of table, control melting
755 DEG C of furnace temperature, it is passed through nitrogen, is refined 15 minutes, after sampling analysis adjustment is qualified after slagging-off, stirring sufficiently, is transferred to standing furnace,
20 minutes are stood, stands 746 DEG C of furnace temperature, standing furnace refining slagging-off, using being sent into casting after silicon nitride rotor 480rpm degasification
Machine, obtains the casting volume of 5.7mm by 693 DEG C of casting temperature, roll casting speed 1100mm/min after casting；
S2. cold rolling and foil roll: the cast-rolling stock obtained in S1 being rolled to obtain the 1XXX system yin of 0.030mm by cold rolling and foil
Pole foil, cold rolling and foil roll material temperature≤150 DEG C after each passes.
4 embodiment of table, 7 ingredient
Casting volume is cold, foil rolls finished product thickness-finished product cleaning-cutting-finished products, is not required to before being rolled down to finished product thickness
Carry out any heat treatment, finished product thickness 0.030mm specification, Product Status is H24 state, finished product annealing process: 255 DEG C of * 15h,
Product strength 133MPa, product are qualified after client D producer is on probation.
1 Hot rolling of comparative example
Ingredient is carried out by alloying component, 745 DEG C of melting furnace temperature, sampling analysis adjusts after refining slagging-off, stirring sufficiently
After qualification, it is transferred to standing furnace, stands 736 DEG C of furnace temperature, standing furnace refining slagging-off is cast as ingot casting, casting temperature into casting machine
700 DEG C of degree, material chemical composition such as table 5.
5 comparative example ingredient of table
Surface milling is carried out to ingot casting surface, ingot casting carries out soaking, 605 DEG C of the holding temperature of ingot casting, ingot casting soaking time
It is 25 hours.The open rolling thickness control of hot rolling at 535 DEG C, finishing temperature control at 280 DEG C, hot rolling blank with a thickness of 6.0mm,
Total road sub-quantity 23, hot rolling blank is cold-rolled to finished product thickness.
Finished product thickness 0.022mm, Product Status H18 state, tensile strength 183MPa, product specific volume after client A is on probation are remembered
It is 100%；
Finished product thickness 0.050mm, Product Status O state, tensile strength 70MPa, product specific volume after client B is on probation are denoted as
100%；
Finished product thickness 0.048mm, Product Status H22 state, tensile strength 69MPa, product specific volume after client C is on probation are denoted as
100%；
Finished product thickness 0.030mm, Product Status H24 state, tensile strength 116MPa, product is through client D qualification on probation；
Embodiment specific volume is to compare the opposite specific volume obtained with this comparative example, and opposite specific volume is bigger, and specific volume measured value is got over
Height, product are more advantageous.
As a result it detects
The distribution of second phase, pattern and size comparison when comparative example is rolled down to finished product thickness H18 state with embodiment:
Such as comparative example 1 (Fig. 1 and Fig. 2) and embodiment (Fig. 3~10) as can be seen that the aluminium electroloysis electricity produced using casting and roll process
Container 1XXX series cathode foil, the distribution of the second phase are more equal with 1XXX series cathode foil than the aluminium electrolutic capacitor that Hot rolling produces
It is even, and casting and roll process production aluminium electrolutic capacitor 1XXX series cathode foil 2.0 μm of the equal < of the second phase size, the second phase amount compared with
It is more, and the aluminium electrolutic capacitor 1XXX series cathode foils of Hot rolling production are used, the second phase size can achieve nearly 4 μm, the
Two phase amounts are obviously than the second phase much less of the aluminium electrolutic capacitor 1XXX series cathode foil of casting and roll process production.From the second phase
From the point of view of shape, Hot rolling mainly generates the second rodlike phase, is unfavorable for subsequent cold rolling, and the aluminium electroloysis of casting and roll process production is electric
Container predominantly spherical, needle-shaped and hexagon shape second phase with 1XXX series cathode foil, is conducive to the rolling of product, process
More smoothly.
Fig. 1,3,5,7 and 9 are the image by metallography microscope sem observation, and the stain on Fig. 1,3,5,7,9 is the second phase, can
Find out that the second phase of the invention is more evenly distributed.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of aluminium electrolutic capacitor manufacturing method of 1XXX series cathode foil, which is characterized in that method includes the following steps:
S1. the cast-rolling stock of 5.5~7.5mm: Al >=99.85%, Si≤350ppm is prepared by following component and mass percent,
Fe≤400ppm, Cu≤100ppm, Mg≤200ppm, Zn≤200ppm, Ti≤50ppm, Mn≤50ppm；
S2. cold rolling and foil roll: the cast-rolling stock obtained in S1 is rolled to obtain the 1XXX system of 0.02~0.06mm by cold rolling and foil
Cathode Foil.
2. the aluminium electrolutic capacitor as described in claim 1 manufacturing method of 1XXX series cathode foil, which is characterized in that the 1XXX
Second phase of series cathode foil is spherical, needle-shaped or hexagon.
3. the aluminium electrolutic capacitor as claimed in claim 2 manufacturing method of 1XXX series cathode foil, which is characterized in that the 1XXX
Series cathode foil is H18 state, and the second phase size is less than 2.0 μm.
4. the manufacturing method of aluminium electrolutic capacitor 1XXX series cathode foil, feature exist as described in claims 1 to 3 any one
In in the preparation method before the 1XXX series cathode foil of rolling 0.02~0.06mm, without any heat treatment.
5. the manufacturing method of aluminium electrolutic capacitor 1XXX series cathode foil, feature exist as described in claims 1 to 3 any one
In the preparation process of cast-rolling stock described in S1 are as follows: each component and mass percent in adjustment melt, control melt temperature are
730 DEG C~760 DEG C, it is passed through nitrogen or argon gas, refines 12~30 minutes, is then allowed to stand 15~30 minutes, is removed the gred, control temperature exists
735 DEG C~750 DEG C, degasification, filtration, purification processing, casting obtain cast-rolling stock.
6. the aluminium electrolutic capacitor as claimed in claim 5 manufacturing method of 1XXX series cathode foil, which is characterized in that the degasification
It is described except slag operation carries out in nitrogen atmosphere using the hydrogen in purification for argon molten aluminum, it is removed the gred more than twice.
7. the aluminium electrolutic capacitor as claimed in claim 6 manufacturing method of 1XXX series cathode foil, which is characterized in that the degasification
It is rotated using silicon nitride rotor into molten aluminum and sprays into argon gas, rotor speed control is in 400~550r/min.
8. the aluminium electrolutic capacitor as claimed in claim 6 manufacturing method of 1XXX series cathode foil, which is characterized in that the degasification
It is rotated using graphite rotator into molten aluminum and sprays into argon gas, rotor speed control is in 360~500r/min.
9. the manufacturing method of aluminium electrolutic capacitor 1XXX series cathode foil, feature exist as described in claims 1 to 3 any one
In material temperature≤150 DEG C after each passes are rolled in cold rolling and foil described in S2.
10. manufacturing method of the aluminium electrolutic capacitor with 1XXX series cathode foil, feature as described in claims 1 to 3 any one
It is, it further includes finished products operation that the 1XXX series cathode foil, which is H22, H24 or O state, and the temperature of annealing is 255~350
DEG C, annealing time is 6~30h.
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| CN201910273205.XA CN110060871B (en) | 2019-04-04 | 2019-04-04 | Preparation method of 1XXX series cathode foil for aluminum electrolytic capacitor |
| KR1020207021867A KR102369518B1 (en) | 2019-04-04 | 2019-12-31 | Manufacturing method of 1XXX series negative electrode foil for aluminum electrolytic capacitor |
| JP2020540258A JP7033664B2 (en) | 2019-04-04 | 2019-12-31 | Manufacturing method of 1XXX cathode foil for aluminum electrolytic capacitors |
| PCT/CN2019/120064 WO2020199610A1 (en) | 2019-04-04 | 2019-12-31 | Method for preparing 1xxx-series cathode foil for aluminum electrolytic capacitors |
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| CN201910273205.XA CN110060871B (en) | 2019-04-04 | 2019-04-04 | Preparation method of 1XXX series cathode foil for aluminum electrolytic capacitor |
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| KR20200118420A (en) | 2020-10-15 |
| JP2021520059A (en) | 2021-08-12 |
| CN110060871B (en) | 2021-07-09 |
| JP7033664B2 (en) | 2022-03-10 |
| KR102369518B1 (en) | 2022-03-02 |
| WO2020199610A1 (en) | 2020-10-08 |
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