CN112490007B - Multi-stage oxidation treatment process for capacitor formation foil of 5G signal transmitter and production line thereof - Google Patents
Multi-stage oxidation treatment process for capacitor formation foil of 5G signal transmitter and production line thereof Download PDFInfo
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- CN112490007B CN112490007B CN202011466749.7A CN202011466749A CN112490007B CN 112490007 B CN112490007 B CN 112490007B CN 202011466749 A CN202011466749 A CN 202011466749A CN 112490007 B CN112490007 B CN 112490007B
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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
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/055—Etched foil electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
Abstract
The invention discloses a multi-stage oxidation treatment process for capacitor formed foil of a 5G signal transmitter and a production line thereof, wherein the process at least comprises five formation processes of first-stage formation, second-stage formation, third-stage formation, fourth-stage formation and fifth-stage formation of aluminum foil, wherein the five formation processes comprise the following steps: the first-stage formation and the second-stage formation are both carried out in an aqueous solution containing oxalic acid, phosphoric acid and ammonium dihydrogen phosphate; the tertiary formation is carried out in an aqueous solution containing ammonium dihydrogen phosphate, boric acid and ammonium pentaborate. Both the quaternary formation and the quinary formation are carried out in an aqueous solution containing boric acid and ammonium pentaborate. The first-level to fifth-level formation processes of the production line are respectively carried out in the corresponding lifting grooves, the working time for converting the specification of the product is shortened, the reaction time of the aluminum foil and the oxidation in the lifting grooves can be conveniently changed, the process equipment is easy and convenient to operate on the whole, time and labor are saved, energy is saved, the performance parameters of the product are improved, the capacitor meeting the technical requirements of a 5G signal transmitter is manufactured, and the cost is lower.
Description
Technical Field
The invention relates to the technical field of multi-stage oxidation treatment devices and processes for aluminum foil production lines for aluminum electrolytic capacitors, in particular to a multi-stage oxidation treatment process for formation of aluminum capacitors for 5G signal transmitters.
Background
At present, the production lines of various production plants of the known electrolytic oxidation reaction tank of the aluminum foil special for the aluminum electrolytic capacitor adopt the original fixed production, and the reaction time of the aluminum foil and the electrolytic reaction oxygen is controlled by using different voltage specifications and different vehicle speeds. The replacement, increase or reduction of the cathode plate can be carried out only by stopping production, thereby increasing the production working hours and delaying the production, and if the cathode plate is not adjusted, the energy consumption is increased, and the power resource is wasted.
The filter used for the 5G signal transmitter has high requirements on the reliability of the capacitor, and has the characteristics of low leakage current and low loss besides high specific volume and long service life. The existing filtering multi-stage oxidation treatment process and device cannot meet the requirement.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a multi-stage oxidation treatment process and a production line thereof, wherein the processes of primary formation, secondary formation, tertiary formation, quaternary formation and fifth formation are respectively carried out in corresponding lifting grooves, and simultaneously, aluminum foils are connected between the formation processes of all stages by using a rolling transmission device for transmission.
The technical scheme adopted by the invention is as follows: the 5G signal transmitter capacitor formation foil multi-stage oxidation treatment process is characterized in that: the method at least comprises five formation processes of first-level formation, second-level formation, third-level formation, fourth-level formation and fifth-level formation of the aluminum foil, wherein:
the first-stage formation and the second-stage formation are carried out in an aqueous solution containing oxalic acid, phosphoric acid and ammonium dihydrogen phosphate;
carrying out three-stage formation in an aqueous solution containing ammonium dihydrogen phosphate, boric acid and ammonium pentaborate;
the quaternary formation and the quinary formation are carried out in an aqueous solution containing boric acid and ammonium pentaborate;
the aluminum foil manufactured by the process is subjected to first-stage formation and second-stage formation in an aqueous solution containing oxalic acid, phosphoric acid and ammonium dihydrogen phosphate, and is subjected to third-stage formation in an aqueous solution containing boric acid, ammonium pentaborate and ammonium dihydrogen phosphate, so that the obtained electrode foil has the advantages of large ripple current resistance, low electric leakage and excellent performance, the quality of the electrode foil is improved, the current density required by each-stage formation is greatly reduced compared with that of the conventional method, the formation time of each stage is greatly shortened, a large amount of electric energy is saved, and the formation efficiency of the electrode foil is improved. The four-stage formation and the five-stage formation are both carried out in an aqueous solution containing boric acid and ammonium pentaborate,
preferably, the first-stage formation process is as follows: immersing the pretreated aluminum foil into0.5-2wt% of phosphoric acid, 3-5wt% of oxalic acid and 4-5wt% of ammonium dihydrogen phosphate in water solution, at 85-87 deg.C and 8-10mA/cm2The first-stage formation process is different from the prior art in that the ratio of hydrated alumina after pretreatment is more, phosphoric acid is used for removing the hydrated alumina in the first-stage formation process, and a layer of aluminum phosphate is generated on the surface of the alumina to protect the alumina and prepare for subsequent formation;
the secondary formation process comprises the following steps: immersing the first-grade formed aluminum foil into an aqueous solution containing 0.5-1wt% of phosphoric acid, 2-3wt% of oxalic acid and 2-3wt% of ammonium dihydrogen phosphate, and carrying out treatment at 85-87 ℃ and 8-10mA/cm2And reacting at 250V for 6 min;
the three-stage formation process comprises the following steps: immersing the aluminum foil after the second-level formation into an aqueous solution containing 3-5wt% of boric acid, 0.5-1wt% of ammonium dihydrogen phosphate and 5-7wt% of ammonium pentaborate, and performing treatment at 85-86 ℃ and 8-10mA/cm2And the reaction is carried out for 5-7min under the conditions of 400-410V;
the four-stage formation process comprises the following steps: immersing the aluminum foil in an aqueous solution containing 3-5wt% of boric acid and 4-5wt% of ammonium pentaborate at 85-87 deg.C and 8-10mA/cm2550-555V for 6-7 min;
the five-level formation process comprises the following steps: immersing the aluminum foil after the quaternary formation into an aqueous solution added with 5-7wt% of boric acid and 2-4wt% of ammonium pentaborate, and performing treatment at 87-89.5 ℃ and 8-10mA/cm2560 and 565V for 12-14 min.
Preferably, after the three-stage formation process of the aluminum foil is completed, the aluminum foil is powered by the feed slot added with the citric acid and the ammonium citrate, and then the four-stage formation and the five-stage formation are performed. The purpose of this process step is to supply the electrical energy required for the oxidation reaction by liquid conduction of citric acid and ammonium citrate. Preferably, the aluminum foil needs to be pretreated before the first-level formation process, and the pretreatment process comprises the following steps: the corroded aluminum foil with the purity of 99.99wt% is placed in pure water with the temperature of 96-98 ℃ for treatment for 9-12 min. To form feather-like (AL)2O3.H2O)(AL2O3.3H2O), achieving the technical purpose of saving electric energy.
Preferably, the first-stage formation, the second-stage formation, the third-stage formation, the fourth-stage formation and the fifth-stage formation of the aluminum foil are respectively carried out in the corresponding lifting grooves, and the aluminum foil is connected between the formation processes by using a rolling transmission device.
Preferably, each liftable groove comprises a groove body and a fork type lifting device arranged at the bottom of the groove body, the fork type lifting device is provided with a lifting power source to push the groove body to ascend or descend, the lifting power source can be one or combination of an oil cylinder, an air cylinder or a motor, and the groove body can be lifted and descended as long as the groove body can be lifted.
Preferably, a base is fixed on the top of each fork-lift device, and the groove body of the lifting groove is arranged on the base to lift, so that the design has the advantage of being cheap to move, clean and maintain the groove body.
Preferably, the base of the fork lifting device is welded by adopting a strength steel plate; the fork type lifting device is hinged and connected by the upper bearing arm and the lower bearing arm to lift vertically, and the base is made of a high-strength seamless rectangular plate, so that the fork type lifting device is high in strength and attractive in appearance.
5G signal transmitter is with multistage oxidation treatment production line of aluminium condenser one-tenth paper tinsel, including the play paper tinsel device that sets gradually, preprocessing device, one-level formation device, second grade becomes the device, tertiary formation device, washing unit one, feeder, washing unit two, level four becomes device and five-stage formation device, and the one-level becomes the device, second grade becomes the device, tertiary formation device, level four becomes the device and five-stage formation becomes the cell body liftable removal of device, put the paper tinsel device simultaneously, preprocessing device, one-level formation device, second grade becomes the device, tertiary formation device, washing unit one, feeder, washing unit two, level four becomes all to use conveyer to connect the transport aluminium foil between the device and five-stage formation device in order to process, thereby improve the processing of whole aluminium foil and the efficiency of production process.
Preferably, floating bodies are arranged between the foil releasing device and the pretreatment device to buffer the aluminum foil, because the operation of the aluminum foil product cannot be stopped, but the aluminum foil raw material is rolled, when the roll is used up, the roll is replaced, then the buffer position is arranged, the buffer position allows the aluminum foil product to slowly rise, the production line cannot be stopped, and then the aluminum foil product has a buffer time when the aluminum foil product is replaced by the roll. Ensuring that the formation reaction is relatively sufficient in the later process treatment process.
Compared with the prior art, the invention has the beneficial effects that:
according to the multi-stage oxidation treatment process for capacitor formed foil, the first-stage formation and the second-stage formation are carried out in the aqueous solution containing oxalic acid, phosphoric acid and ammonium dihydrogen phosphate, the third-stage formation is carried out in the aqueous solution containing boric acid, ammonium pentaborate and ammonium dihydrogen phosphate, the electrode foil obtained under the action of the phosphoric acid and the ammonium dihydrogen phosphate has the advantages of large ripple current resistance, low electric leakage and improvement on the quality of the electrode foil, and meanwhile, the current density required by the various-stage formation is greatly reduced compared with that of the existing method, the formation time of each stage is greatly shortened, a large amount of electric energy is saved, and the formation efficiency of the electrode foil is improved.
When the aluminum foil manufactured by the process is used on a 5G signal transmitter capacitor, the technical requirements of the 5G signal transmitter capacitor on high specific volume, high bending and low leakage rate of the aluminum foil are met.
In addition, in the manufacturing process of the aluminum foil, the lifting groove body is used for replacing a fixed groove body to carry out polarization treatment at all levels, the lifting groove body can greatly shorten the working time of converting the specification of a product, and the reaction time of the aluminum foil and the oxidation in the groove body can be changed at will.
In addition, the multi-stage oxidation treatment production line for capacitor formed foil uses the lifting groove body to replace a fixed groove body to carry out polarization treatment of each stage, and the lifting groove body not only can greatly shorten the working time for converting the specification of a product, but also can randomly change the reaction time of the aluminum foil and the oxidation in the groove body.
In conclusion, according to the multi-stage oxidation treatment process for capacitor formation foil, the obtained electrode foil has excellent performances of large ripple current resistance and low electric leakage, the quality of the electrode foil is improved, the current density required by each stage of formation is reduced, the formation time of each stage is shortened, the formation efficiency of the electrode foil is improved, a large amount of electric energy is saved, the environment-friendly performance is good, and the cost is low.
The multi-stage oxidation treatment production line for capacitor formed foil accelerates the formation speed of the multi-stage oxidation treatment process for capacitor formed foil, saves energy consumption, improves the performance parameters of formed foil products, and improves the high specific volume and the service life of a 5G signal transmitter.
Drawings
FIG. 1 is a schematic view of a multi-stage oxidation processing line for capacitor formation;
FIG. 2 is a front view of the elevating trough body;
fig. 3 is a side view of the elevating trough body.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the combination or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention. In addition, in the description process of the embodiment of the present invention, the positional relationships of the devices such as "upper", "lower", "front", "rear", "left", "right", and the like in all the drawings are based on fig. 1.
Example 1
One embodiment of the multi-stage oxidation treatment process for capacitor formation foil comprises the following specific implementation steps:
(1) pretreatment: placing the corroded aluminum foil with the purity of 99.99wt% in pure water at the temperature of 97 ℃ for treatment for 12 min;
(2) first-stage formation: immersing the pretreated aluminum foil into an aqueous solution containing 1wt% of phosphoric acid, 5wt% of oxalic acid and 4wt% of ammonium dihydrogen phosphate, and reacting at 85 ℃, 10mA/cm2 and 120V for 6 min;
(3) secondary formation: immersing the first-stage formed aluminum foil into an aqueous solution containing 0.5wt% of phosphoric acid, 2wt% of oxalic acid and 2wt% of ammonium dihydrogen phosphate, and forming for 6min under the conditions of 85 ℃, 10mA/cm2 and 250V;
(4) carrying out three-stage formation: immersing the secondarily formed aluminum foil into an aqueous solution containing 3wt% of boric acid, 0.5wt% of ammonium dihydrogen phosphate and 5wt% of ammonium pentaborate, and forming for 6min at the conditions of 85 ℃, 10mA/cm2 and 400V;
(5) supplying power to the aluminum foil after the third-stage formation through a feed groove added with citric acid and ammonium citrate;
(6) carrying out four-stage formation: immersing the aluminum foil into an aqueous solution containing 3wt% of boric acid and 6wt% of ammonium pentaborate, and carrying out chemical reaction for 6min at the conditions of 85 ℃, 10mA/cm2 and 550V;
(7) five-stage formation: the aluminum foil after the quaternary formation was immersed in an aqueous solution containing 5wt% boric acid and 3wt% ammonium pentaborate, and formed at 88 ℃ for 12min under conditions of 10mA/cm2 and 561V.
Example 2
Different from the embodiment 1, another embodiment of the multi-stage oxidation treatment process for capacitor formation foil comprises the following specific implementation steps:
(1) pretreatment: placing the corroded aluminum foil with the purity of 99.99wt% in pure water at the temperature of 98 ℃ for treatment for 9 min;
(2) first-stage formation: immersing the pretreated aluminum foil into an aqueous solution containing 2.5wt% of phosphoric acid, 3wt% of oxalic acid and 3wt% of ammonium dihydrogen phosphate, and reacting at 86 ℃ and 8mA/cm2 under the condition of 123V for 6.5 min;
(3) secondary formation: immersing the first-stage formed aluminum foil into an aqueous solution containing 1wt% of phosphoric acid, 3wt% of oxalic acid and 3wt% of ammonium dihydrogen phosphate, and forming for 6.5min under the conditions of 86 ℃, 8mA/cm2 and 245V;
(4) carrying out three-stage formation: immersing the secondary-formed aluminum foil into an aqueous solution containing 5wt% of boric acid, 1wt% of ammonium dihydrogen phosphate and 7wt% of ammonium pentaborate, and forming for 7min at 86 ℃, 8mA/cm2 and 390V;
(5) supplying power to the aluminum foil after the third-stage formation through a feed groove added with citric acid and ammonium citrate;
(6) carrying out four-stage formation: immersing the aluminum foil into an aqueous solution containing 5wt% of boric acid and 4wt% of ammonium pentaborate, and carrying out chemical reaction at 86 ℃, 8mA/cm2 and 545V for 6.5 min;
(7) five-stage formation: immersing the aluminum foil after the four-stage formation into an aqueous solution added with 6wt% of boric acid and 2wt% of ammonium pentaborate, and forming for 13min under the conditions of 89 ℃, 8mA/cm2 and 562V, thus fully preparing for oxidation reaction.
Example 3
Different from the embodiment 1, another embodiment of the multi-stage oxidation treatment process for capacitor formation foil comprises the following specific implementation steps:
(1) pretreatment: placing the corroded aluminum foil with the purity of 99.99wt% in pure water at the temperature of 96.5 ℃ for treatment for 10 min;
(2) first-stage formation: immersing the pretreated aluminum foil into an aqueous solution containing 2wt% of phosphoric acid, 4wt% of oxalic acid and 5wt% of ammonium dihydrogen phosphate, and reacting at 87 ℃ and 9mA/cm2 under 126V for 7 min;
(3) secondary formation: immersing the first-stage formed aluminum foil into an aqueous solution containing 0.6wt% of phosphoric acid, 2wt% of oxalic acid and 2.5wt% of ammonium dihydrogen phosphate, and forming for 7min at 87 ℃ under the conditions of 9mA/cm2 and 255V;
(4) carrying out three-stage formation: immersing the aluminum foil after the secondary formation into an aqueous solution containing 3wt% of boric acid, 0.5wt% of ammonium dihydrogen phosphate and 5wt% of ammonium pentaborate, and forming for 6.5min at the conditions of 85.5 ℃, 9mA/cm2 and 410V;
(5) supplying power to the aluminum foil after the third-stage formation through a feed groove added with citric acid and ammonium citrate;
(6) carrying out four-stage formation: immersing the aluminum foil into an aqueous solution containing 4wt% of boric acid and 5wt% of ammonium pentaborate, and carrying out chemical reaction for 7min at 87 ℃ under the conditions of 9mA/cm2 and 555V;
(7) five-stage formation: the aluminum foil after the quaternary formation was immersed in an aqueous solution containing 7wt% boric acid and 2.5wt% ammonium pentaborate, and formed at 87 ℃ and 9mA/cm2 and 563V for 14 min.
The data for example 1, example 2 and example 3 are compared below and the following table is carefully observed:
table 1 comparative table of process parameters of example 1, example 2 and example 3 and properties of formed foils obtained
As can be seen from the comparative table of the process parameters of the example 1, the example 2 and the example 3 and the properties of the formed foils obtained in the above table 1, the formed foils obtained in the example 1 and the example 3 have small aluminum oxide crystals generated in the process, so that the formed foils have low bending, small leakage current, long service life of the formed capacitor and strong ripple resistance. However, the formed foil prepared in example 2 has a short lifetime of the capacitor and poor ripple resistance due to coarse alumina crystals formed during the process, high flex of the formed foil, large leakage current. That is, the formed foils obtained in examples 1 and 3 were excellent in the quality of the whole. In addition, we compare the power consumption of the process as shown in table 2:
TABLE 2 comparison of the parameters of the formed foils obtained in the prior art with the formed foils obtained using examples 1, 2 and 3
The conventional chemical foil shown in table 2 is produced by using the same phosphating solution and the same repair chemical temperature and voltage as those of example 1, and saves electric energy by 10% or more compared with the conventional chemical foil.
More specifically, in order to obtain 520VF0.78 muf/cm with the same capacity and ripple current resistance2Forming foil, wherein LC is smaller than 2 muA after the formed foil can meet the DC leakage current for 5min at 25 ℃; after applying the rated voltage with ripple current for 3000 hours at 105 ℃, recovering for 24 hours, testing at the normal temperature of 25 ℃, and enabling the direct current leakage current to be less than 3.7 muA; after the film is stored for 1000 hours at 105 ℃, the film is tested at the normal temperature of 25 ℃ after 24 hours of recovery, and when the direct current leakage current is less than 4 muA, the power consumption of the formed foil manufactured by the prior art is 69 degrees/square of power consumption, while the power consumption of the formed foil manufactured by the prior art is 55 degrees/square, 57 degrees/square of power consumption and 56 degrees/square of power consumption in examples 1, 2 and 3 respectively, namely the process method can save 12-14 degrees/square compared with the scheme in the prior art.
Similarly, to obtain 520VF0.79 muf/cm with the same capacity and ripple current resistance2Forming a foil, and after 5min of direct current leakage current at 25 ℃, LC is smaller than 2.2 muA; after applying the rated voltage with ripple current for 3000 hours at 105 ℃, recovering for 24 hours, testing at the normal temperature of 25 ℃, and enabling the direct current leakage current to be less than 2.6 muA; after the film is stored for 1000 hours at 105 ℃, and after the film is recovered for 24 hours, the film is tested at the normal temperature of 25 ℃, the direct current leakage current is less than 4.2 muA, the power consumption of the formed foil manufactured by the prior art is 71 degrees/square of power consumption, and the power consumption of the formed foil manufactured by the prior art is 57 degrees/square of power consumption, 59 degrees/square of power consumption and 58 degrees/square of power consumption respectively, namely, compared with the scheme in the prior art, the process method disclosed by the invention can save 12-14 degrees/square.
In order to prepare 520VF0.79 muf/cm with same capacitance and ripple current resistance2520VF0.80µf/cm2Forming a foil, and after DC leakage current is 5min at 25 ℃, LC is smaller than 2.5 muA; after applying the rated voltage with ripple current for 3000 hours at 105 ℃, recovering for 24 hours, testing at the normal temperature of 25 ℃, and enabling the direct current leakage current to be less than 3 muA; after the storage for 1000 hours at 105 ℃, the test is carried out at the normal temperature of 25 ℃ after the recovery for 24 hours, the direct current leakage current is less than 5 muA, and the prior artThe power consumption of the formed foil manufactured by the technology is 73 degrees/square, while the power consumption of 59 degrees/square, 61 degrees/square and 60 degrees/square in the embodiments 1, 2 and 3 respectively, namely, the process method of the invention can save 12-14 degrees/square compared with the scheme in the prior art.
And 520VF0.81 muf/cm for obtaining the same capacity ripple current resistance2Forming a foil, and after 5min of direct current leakage current at 25 ℃, LC is smaller than 3 muA; after applying the rated voltage with ripple current for 3000 hours at 105 ℃, recovering for 24 hours, testing at the normal temperature of 25 ℃, and enabling the direct current leakage current to be less than 5 muA; after the storage for 1000 hours at 105 ℃, after 24 hours of recovery, testing at normal temperature and 25 ℃, wherein the direct current leakage current is less than 6 muA, and after 5min of direct current leakage current at 25 ℃, the LC is less than 3 muA; after applying the rated voltage with ripple current for 3000 hours at 105 ℃, recovering for 24 hours, testing at the normal temperature of 25 ℃, and enabling the direct current leakage current to be less than 5 muA; after the film is stored for 1000 hours at 105 ℃, and after the film is recovered for 24 hours, the film is tested at the normal temperature of 25 ℃, the direct current leakage current is less than 6 muA, the power consumption of the formed foil manufactured by the prior art is 75 degrees/square of power consumption, and examples 1, 2 and 3 respectively use 60 degrees/square of power consumption, 64 degrees/square of power consumption and 62 degrees/square of power consumption, namely, compared with the scheme in the prior art, the process method can save 11-15 degrees/square.
And 520VF0.82 muf/cm for obtaining the same capacity ripple current resistance2Forming a foil, and after DC leakage current is 5min at 25 ℃, LC is smaller than 3.5 muA; after applying the rated voltage with ripple current for 3000 hours at 105 ℃, recovering for 24 hours, testing at the normal temperature of 25 ℃, and enabling the direct current leakage current to be less than 5.6 muA; after the film is stored for 1000 hours at 105 ℃, and after the film is recovered for 24 hours, the film is tested at the normal temperature of 25 ℃, the direct current leakage current is less than 7 muA, the power consumption of the formed foil manufactured by the prior art is 77 degrees/square of power consumption, and the power consumption of the formed foil manufactured by the prior art is 63 degrees/square of power consumption, 66 degrees/square of power consumption and 64 degrees/square of power consumption respectively in examples 1, 2 and 3, namely the process method can save 11-14 degrees/square compared with the scheme in the prior art.
Example 4
The multi-stage oxidation treatment production line for the formation of the aluminum capacitor into the foil for the 5G signal transmitter comprises a foil placing device 10, a pretreatment device 30, a first-stage formation device F1, a second-stage formation device F2, a third-stage formation device F3, a first water washing device 40, a feeding device 50, a second water washing device 60, a fourth-stage formation device F4 and a fifth-stage formation device F5 which are sequentially arranged, and the groove bodies of the first-level formation device, the second-level formation device, the third-level formation device, the fourth-level formation device and the fifth-level formation device can move up and down, put paper tinsel device, preprocessing device, one-level into device, second grade become the device, tertiary become the device, washing unit one, feed arrangement, washing unit two, level four become all to use conveyer to connect between device and the five-level device of formation and carry the aluminium foil in order to process simultaneously to improve the processing of whole aluminium foil and the efficiency of production process.
Preferably, floating bodies 20 are further provided between the foil feeding device 10 and the pre-treatment device 30 to buffer the aluminum foil, because the operation of the product is not stopped, but the raw material is wound on a roll, and when the roll is used up, the roll is replaced, and then the buffer is provided, which allows him to slowly ascend, then the production line is not stopped, and then when we replace the raw material, he has a buffer time. Ensuring that the formation reaction is relatively sufficient in the later process treatment process.
As can be seen from fig. 2 and fig. 3, 1 is a trough body, 2 is a platform, 3 is a piston push rod, 4 is a cylinder body, 5 is a medium injection joint, 6 is an X upper support arm, and 7 is an X lower support arm, i.e. the liftable trough consists of a trough body and a fork type lifting device. The groove body lifting is realized by that the telescopic cylinder body of the lifting power source stretches to push the groove body on the X upper supporting arm platform to lift or descend. The fork type lifting device comprises an X-shaped upper supporting arm 6 and a lower supporting arm 7 which are fixed, and a liquid or gas cylinder 4 and a piston push rod 3. When liquid or gas is injected into the liquid or gas through the liquid or gas medium injection joint 5 to a certain pressure, the piston push rod 3 in the cylinder body 4 can be pushed to ascend, so that the X upper bearing arm is pushed to expand upwards and simultaneously drive the X lower bearing arm fixed on the base 8 to ascend, the tank body placed on the upper platform of the upper bearing arm ascends along with the ascending, and otherwise, when the gas or the liquid in the tank body is reduced or recycled, the tank body 1 descends along with the folding of the X upper and lower bearing arms.
The invention discloses a multistage oxidation treatment process of an aluminum foil production line and the production line, which comprises first-stage formation, second-stage formation, third-stage formation, fourth-stage formation and fifth-stage formation of an aluminum foil, wherein the first-stage formation and the second-stage formation of the aluminum foil are carried out in an aqueous solution containing oxalic acid, phosphoric acid and ammonium dihydrogen phosphate, the third-stage formation is carried out in an aqueous solution containing boric acid, ammonium dihydrogen phosphate and ammonium pentaborate, and the fourth-stage formation and the fifth-stage formation are both carried out in an aqueous solution containing boric acid and ammonium pentaborate. The electrode foil manufactured by the process method has the advantages of large ripple current resistance, low electric leakage and effective improvement of the quality of the electrode foil.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (8)
- The 1.5G signal transmitter capacitor formation foil multilevel oxidation treatment process is characterized in that: the method at least comprises five formation processes of first-level formation, second-level formation, third-level formation, fourth-level formation and fifth-level formation of the aluminum foil, wherein:the first-stage formation and the second-stage formation are carried out in an aqueous solution containing oxalic acid, phosphoric acid and ammonium dihydrogen phosphate;carrying out three-stage formation in an aqueous solution containing ammonium dihydrogen phosphate, boric acid and ammonium pentaborate;quaternary formation and quinary formation, both carried out in an aqueous solution containing boric acid and ammonium pentaborate, wherein:the first-stage formation process comprises the following steps: immersing the pretreated aluminum foil in an aqueous solution containing 1wt% of phosphoric acid, 5wt% of oxalic acid and 4wt% of ammonium dihydrogen phosphate at 85 ℃ and 10mA/cm2And reacting at 120V for 6 min;the secondary formation process comprises the following steps: immersing the first-grade aluminum foil into an aqueous solution containing 0.5wt% of phosphoric acid, 2wt% of oxalic acid and 2wt% of ammonium dihydrogen phosphate, and heating at 85 deg.C and 10mA/cm2And reacting at 250V for 6 min;the three-stage formation process comprises the following steps: will be two-stagedThe resultant aluminum foil was immersed in an aqueous solution containing 3wt% of boric acid, 0.5wt% of ammonium dihydrogen phosphate and 5wt% of ammonium pentaborate at 85 ℃ and 10mA/cm2And reacting for 6min under the condition of 400V;the four-stage formation process comprises the following steps: immersing the aluminum foil in an aqueous solution containing 3wt% boric acid and 6wt% ammonium pentaborate at 85 deg.C and 10mA/cm2550V for 6 min;the five-level formation process comprises the following steps: immersing the aluminum foil after quaternary formation in an aqueous solution containing 5wt% boric acid and 3wt% ammonium pentaborate, and heating at 88 deg.C and 10mA/cm2And 561V, the reaction time is 12 min.
- The multi-stage oxidation treatment process for capacitor formation of the 2.5G signal transmitter is characterized by comprising the following steps of: the method at least comprises five formation processes of first-level formation, second-level formation, third-level formation, fourth-level formation and fifth-level formation of the aluminum foil, wherein:the first-stage formation and the second-stage formation are carried out in an aqueous solution containing oxalic acid, phosphoric acid and ammonium dihydrogen phosphate;carrying out three-stage formation in an aqueous solution containing ammonium dihydrogen phosphate, boric acid and ammonium pentaborate;quaternary formation and quinary formation, both carried out in an aqueous solution containing boric acid and ammonium pentaborate, wherein:the first-stage formation process comprises the following steps: immersing the pretreated aluminum foil in an aqueous solution containing 2wt% of phosphoric acid, 4wt% of oxalic acid and 5wt% of ammonium dihydrogen phosphate at 87 ℃ and 9mA/cm2And the reaction solution is converted into the solution for 7min under the condition of 126V;the secondary formation process comprises the following steps: immersing the first-grade aluminum foil into an aqueous solution containing 0.6wt% of phosphoric acid, 2wt% of oxalic acid and 2.5wt% of ammonium dihydrogen phosphate at 87 ℃ and 9mA/cm2And reacting at 255V for 7 min;the three-stage formation process comprises the following steps: immersing the secondarily formed aluminum foil into an aqueous solution containing 3wt% of boric acid, 0.5wt% of ammonium dihydrogen phosphate and 5wt% of ammonium pentaborate, and performing treatment at 85.5 deg.C and 9mA/cm2And the reaction time is 6.5min under the condition of 410V;the four-stage formation process comprises the following steps: immersing the aluminum foil in a bath containing 4wt% boric acid and 5wt% ammonium pentaborateIn an aqueous solution at 87 ℃ and 9mA/cm2And reacting at 555V for 7 min;the five-level formation process comprises the following steps: immersing the aluminum foil after quaternary formation in an aqueous solution containing 7wt% boric acid and 2.5wt% ammonium pentaborate, and heating at 87 deg.C and 9mA/cm2And 563V, for 14 min.
- 3. The capacitor formation foil oxidation treatment process according to claim 1 or 2, characterized in that: after the three-stage formation process of the aluminum foil is completed, the aluminum foil is supplied with power through a feed slot added with citric acid and ammonium citrate, and then four-stage formation and five-stage formation are carried out.
- 4. The capacitor forming foil oxidation treatment process of claim 3, wherein: the aluminum foil needs to be pretreated before the first-level formation process, and the pretreatment process comprises the following steps: the corroded aluminum foil with the purity of 99.99wt% is placed in pure water with the temperature of 96-98 ℃ for treatment for 9-12 min.
- 5. The capacitor forming foil oxidation treatment process of claim 4, wherein: the first-stage formation, the second-stage formation, the third-stage formation, the fourth-stage formation and the fifth-stage formation processes of the aluminum foil are respectively carried out in the corresponding lifting grooves, and meanwhile, the aluminum foil is connected between the formation processes of different stages by using a rolling transmission device to be transmitted.
- 6. The capacitor forming foil oxidation treatment process of claim 5, wherein: each lifting groove comprises a groove body and a fork lifting device arranged at the bottom of the groove body, and the fork lifting device is provided with a lifting power source to push the lifting groove to ascend or descend.
- 7. The oxidation treatment process for formed foils of capacitors as claimed in claim 6, wherein: a base is fixed at the top of each fork type lifting device, and a groove body of the lifting groove is arranged on the base to lift.
- 8. The capacitor forming foil oxidation treatment process of claim 7, wherein: the base of the fork type lifting device is welded by adopting a strength steel plate; and the fork type lifting device is hinged and connected by an upper bearing arm and a lower bearing arm to lift vertically, and a high-strength seamless rectangular plate is adopted to manufacture the base.
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