CN106591917A - Surface formation method of high-purity aluminum wire - Google Patents
Surface formation method of high-purity aluminum wire Download PDFInfo
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- CN106591917A CN106591917A CN201611097165.0A CN201611097165A CN106591917A CN 106591917 A CN106591917 A CN 106591917A CN 201611097165 A CN201611097165 A CN 201611097165A CN 106591917 A CN106591917 A CN 106591917A
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- Prior art keywords
- purity aluminum
- aluminum steel
- aluminum wire
- synthesizing method
- surface chemical
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention provides a surface formation method of a high-purity aluminum wire. The surface formation method of the high-purity aluminum wire comprises the following steps of after cleaning the high-purity aluminum wire through a cleaning agent for removing surface oil, connecting one end of the high-purity aluminum wire with a positive pole of a power supply and connecting the other end of the high-purity aluminum wire with a current-conducting plate of a formation liquid so as to form a closed loop circuit; after carrying out formation for 50min at the voltage being 200V and the electric current density being ranged from 3 to 6A/kg, rising the voltage to be 200V, maintaining the voltage to be constant until the electric current density is reduced to below 0.5A/kg, transferring the high-purity aluminum wire into pure water, and rolling for 120 to 150s; and feeding the high-purity aluminum wire into a postprocessing solution, placing for 150 to 180s, fishing out, and placing into the pure water with the temperature being ranged from 55 to 60 DEG C for 120 to 150s, and sequentially drying under a vacuum condition and a heating condition, wherein the temperature of the heating condition is ranged from 110 to 130 DEG C. Compared with the prior art, a leakage current value of the high-purity aluminum wire processed by the method provided by the invention is greatly reduced.
Description
Technical field
The present invention relates to the high-purity aluminum steel pretreatment process method of capacitor lead-out wire, belongs to capacitor and draws line technology neck
Domain.
Background technology
Capacitor lead-out wire is by CP wire (CP lines) and the big main material of high-purity aluminum steel (aluminium content >=99.85%) two
Composition, carries out processing and forming different size, with Novel electric to high-purity aluminum steel part again by arc welding by bi-material welding
Subcomponent updates, and capacitor lead-out wire technical requirements are constantly updated, and wherein electrical quantity requires constantly to propose new demand, wherein
Capacitor lead-out wire leakage current technical specification is changed over by moulding section immersion test fluid depth 2/3 and is totally immersed into, or even will
High-purity aluminum steel is unformed be partly submerged in after test leakage current.
Originally method of testing is contrasted with present method
1st, leakage current with immersion test fluid area it is relevant, when applied voltage it is constant, otherwise immersion area it is bigger less；
2nd, the high-purity aluminum steel moulding section of original lead-out wire carries out chemical conversion treatment, even if surface forming dielectric oxide film, due to
Depth changes can not meet its technical requirements
If the 3, immersion chemical conversion part is deepened in chemical synthesis technology, change to not forming oxide-film part (unformed part)
Into, but affected by size, unformed portion size reduced size is after 0.95～1.5mm or so, immersion because liquid is being changed
Cheng Zhongyou receives suction phenomenon, and forming liquid climbs upwards along object, causes nigrescence to be scrapped immersion top another kind material (CP lines),
In sum, pre- chemical conversion treatment is carried out to unformed part and moulding section is melted into the technique that combines and solves leakage current technical specification
Meet the requirements of the customers.
The content of the invention
The present invention carries out pre- chemical conversion treatment for unformed part, there is provided a kind of high-purity aluminum steel comes to the surface into process,
The problems referred to above in the presence of to solve prior art.
The present invention is achieved by the following technical solutions：
The present invention provides a kind of surface chemical synthesizing method of high-purity aluminum steel, and it comprises the steps：
By high-purity aluminum steel with abluent clean removing surface and oil contaminant after, one end is connected with the positive pole of power supply, the other end and
The conductive plate connection of forming liquid, forms closed-loop path；
Voltage in 200V, carry out after chemical conversion 50min under the electric current density of 3～6A/kg, by voltage constant in 200V, directly
Below 0.5A/kg is down to electric current density, in proceeding to pure water, 120～150s is rolled；
Input post-treatment solution in, place 150～180s after, take out, be put in 55～60 DEG C of pure water place 120～
150s, is dried successively under vacuum condition and heating condition, wherein, the temperature of the heating condition is 110～130 DEG C.
Preferably, a diameter of 0.96～2.0mm of high-purity aluminum steel.
Preferably, the aluminium content in high-purity aluminum steel is not less than 99.93%.
Preferably, the pH value of the abluent is 8～9.
Preferably, the abluent is degreasing agent (such as Shanghai Paar card company limited degreasing agent, model FC-
315) aqueous solution, wherein, the mass fraction of the degreasing agent is 1.5～2%.
Preferably, the forming liquid is 300～500um/cm for conductivity2Boron aqueous acid, wherein, boron
The mass fraction of acid is 2.5～3%.
Preferably, the pH value of the post-treatment solution is 8～9.
Preferably, the aftertreatment fluid is Fructus Citri Limoniae aqueous acid, wherein, the mass fraction of citric acid is 0.8
～1%.
Compared with prior art, the present invention has following beneficial effect：
The leakage current value of high-purity aluminum steel that the inventive method was processed is greatly lowered.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformations and improvement can also be made.These belong to the present invention
Protection domain.
Embodiment 1
The present embodiment is related to a kind of surface chemical synthesizing method of high-purity aluminum steel, specifically includes following steps：
First, the high-purity aluminum steels of a diameter of 0.96-2.0mm, wherein more than aluminium content >=99.93%, other metallic elements are chosen
Difference Si≤0.04%, Fe≤0.04%, Cu≤0.01%, Zn≤0.005%, Ti≤0.01%, middle nothing in disk form connects
Head；
2nd, greasy dirt is cleaned：Abluent is prepared, degreasing adopts the aqueous solution of degreasing agent, and pH value is 8～9, the matter of degreasing agent
Amount fraction is 1.5～2%, and the degreasing agent of the optional Shanghai Paar card company limited of degreasing agent, model FC-315, temperature keeps 50
～55 DEG C, high-purity aluminum steel enters 120～150s, to be changed after taking-up；
3rd, forming liquid is prepared, takes pure water and be put into storage bin and heated 30～35 DEG C, be slowly added into boric acid, stir extremely
Fully dissolving, is formulated as the aqueous solution that mass fraction is 2.5～3%, and conductivity is 300～500um/cm2, forming liquid prepared
Bi Hou, high-purity aluminum steel for deoiling of cleaning is put in forming liquid, and high-purity aluminum steel one end be connected with positive source, the other end and is melted into
Liquid conductive plate connects, applied voltage 200V, and electric current density is 3～6A/ ㎏, 50 minutes time, then keeps voltage 200V constant pressures,
Until electric current is down to below 0.5A/ ㎏ treats that pure water is rinsed；
4th, will be melted into high-purity aluminum steel to move, 120～150s is kept into pure water and is rolled, water temperature is kept for 20～25 DEG C, is taken
Post processing is treated after going out；
5th, aftertreatment technology, prepares post-treatment solution, takes pure water delivery box, will wherein heat 30～40 DEG C and be put into Fructus Citri Limoniae
Acid ratio example is 0.8～1%, PH8～9, fully after dissolving by cleaning after high-purity aluminum steel be put in post-treatment solution, keep 150
～180s, treats to clean again after taking-up；
6th, high-purity aluminum steel after post processing is put in pure water and is cleaned, 55～60 DEG C of pure water temperature holding, the time 120～
150s, takes out water to be gone；
7th, go water using negative pressure 120～150s of evacuation, high-purity aluminum steel surface moisture is tentatively removed, it is to be dried；
8th, high-purity aluminum steel of water is gone to send baking oven evacuation, oven temperature is kept for 120 DEG C ± 10 DEG C, 30 minutes time,
Take out, electrical quantity leakage current value to be tested.
The method of testing of leakage current value is：Prepare mass fraction be 7% boric acid aqueous solution as test fluid, test temperature
50 DEG C ± 5 DEG C, test voltage 100V tests electric current density 2mA, and testing time 60s takes one section and dried high-purity aluminum steel, immerses
Test fluid 3mm, high-purity aluminum steel one end connects positive source, power cathode connecting test liquid electrode plate.Turn on the power rear instrument to show
Show that final leakage current value answers≤40mA.
Compared with prior art, effect of the present invention is as shown in table 1：
Table 1
Note：A+B is moulding section+unformed part.
Above-mentioned comparative analysiss：Leakage current is less than prior art Jing after high-purity aluminum steel pretreatment chemical conversion.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can within the scope of the claims make various modifications or modification, this not shadow
Ring the flesh and blood of the present invention.
Claims (8)
1. a kind of surface chemical synthesizing method of high-purity aluminum steel, it is characterised in that comprise the steps：
By high-purity aluminum steel with abluent clean removing surface and oil contaminant after, one end be connected with the positive pole of power supply, the other end and be melted into
The conductive plate connection of liquid, forms closed-loop path；
Voltage in 200V, carry out after chemical conversion 50min under the electric current density of 3～6A/kg, by voltage constant in 200V, until electric
Current density is down to below 0.5A/kg, in proceeding to pure water, rolls 120～150s；
In input post-treatment solution, after placing 150～180s, take out, be put into 120～150s of placement in 55～60 DEG C of pure water,
Dried under vacuum condition and heating condition successively, wherein, the temperature of the heating condition is 110～130 DEG C.
2. the surface chemical synthesizing method of high-purity aluminum steel as claimed in claim 1, it is characterised in that high-purity aluminum steel it is a diameter of
0.96～2mm.
3. the surface chemical synthesizing method of high-purity aluminum steel as claimed in claim 1 or 2, it is characterised in that in high-purity aluminum steel
Aluminium content is not less than 99.93%.
4. the surface chemical synthesizing method of high-purity aluminum steel as claimed in claim 1, it is characterised in that the pH value of the abluent is 8
～9.
5. the surface chemical synthesizing method of the high-purity aluminum steel as described in claim 1 or 4, it is characterised in that the abluent is defat
The aqueous solution of agent, wherein, the mass fraction of the degreasing agent is 1.5～2%.
6. the surface chemical synthesizing method of high-purity aluminum steel as claimed in claim 1, it is characterised in that the forming liquid is for conductivity
300～500um/cm2Boron aqueous acid, wherein, the mass fraction of boric acid is 2.5～3%.
7. the surface chemical synthesizing method of high-purity aluminum steel as claimed in claim 1, it is characterised in that the pH value of the post-treatment solution
For 8～9.
8. the surface chemical synthesizing method of high-purity aluminum steel as claimed in claim 1, it is characterised in that the aftertreatment fluid is citric acid
Aqueous solution, wherein, the mass fraction of citric acid is 0.8～1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611097165.0A CN106591917A (en) | 2016-12-02 | 2016-12-02 | Surface formation method of high-purity aluminum wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611097165.0A CN106591917A (en) | 2016-12-02 | 2016-12-02 | Surface formation method of high-purity aluminum wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106591917A true CN106591917A (en) | 2017-04-26 |
Family
ID=58597001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611097165.0A Pending CN106591917A (en) | 2016-12-02 | 2016-12-02 | Surface formation method of high-purity aluminum wire |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6211076B2 (en) * | 1979-04-05 | 1987-03-10 | Matsushita Electric Ind Co Ltd | |
| CN87100618A (en) * | 1986-02-06 | 1987-08-19 | 艾尔坎国际有限公司 | Insulated aluminum wire |
| CN1085610A (en) * | 1993-09-29 | 1994-04-20 | 河南省鄢陵电磁材料厂 | Oxide membrane aluminium wire and aluminium foil (band) and production technique thereof |
| CN101777432A (en) * | 2010-03-23 | 2010-07-14 | 扬州宏远电子有限公司 | Forming process of anode foils for extra-high voltage aluminium electrolytic capacitors |
| CN104966615A (en) * | 2015-07-13 | 2015-10-07 | 南通南铭电子有限公司 | Manufacturing method for solid-state capacitor lead-out wire |
-
2016
- 2016-12-02 CN CN201611097165.0A patent/CN106591917A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6211076B2 (en) * | 1979-04-05 | 1987-03-10 | Matsushita Electric Ind Co Ltd | |
| CN87100618A (en) * | 1986-02-06 | 1987-08-19 | 艾尔坎国际有限公司 | Insulated aluminum wire |
| CN1085610A (en) * | 1993-09-29 | 1994-04-20 | 河南省鄢陵电磁材料厂 | Oxide membrane aluminium wire and aluminium foil (band) and production technique thereof |
| CN101777432A (en) * | 2010-03-23 | 2010-07-14 | 扬州宏远电子有限公司 | Forming process of anode foils for extra-high voltage aluminium electrolytic capacitors |
| CN104966615A (en) * | 2015-07-13 | 2015-10-07 | 南通南铭电子有限公司 | Manufacturing method for solid-state capacitor lead-out wire |
Non-Patent Citations (3)
| Title |
|---|
| 宋洪洲: "中高压阳极铝箔化成工艺研究-化成后处理对箔特性的影响", 《广西物理》 * |
| 班朝磊等: "柠檬酸盐对阳极箔形成速度与比电容的影响", 《电子元件与材料》 * |
| 陈启复: "《中国气动工业发展史》", 31 October 2012, 机械工业出版社 * |
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Application publication date: 20170426 |
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