CN108060452A - The electrobrightening processing method of aluminium - Google Patents
The electrobrightening processing method of aluminium Download PDFInfo
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- CN108060452A CN108060452A CN201711320047.6A CN201711320047A CN108060452A CN 108060452 A CN108060452 A CN 108060452A CN 201711320047 A CN201711320047 A CN 201711320047A CN 108060452 A CN108060452 A CN 108060452A
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 218
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 203
- 239000004411 aluminium Substances 0.000 title claims abstract description 192
- 238000003672 processing method Methods 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 110
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 62
- 239000012530 fluid Substances 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims abstract description 51
- 238000009792 diffusion process Methods 0.000 claims abstract description 21
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 50
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 18
- 229910052739 hydrogen Inorganic materials 0.000 claims description 17
- 239000001257 hydrogen Substances 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 13
- 230000035699 permeability Effects 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 210000000981 epithelium Anatomy 0.000 abstract description 48
- 238000005498 polishing Methods 0.000 abstract description 16
- 238000012805 post-processing Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 235000010210 aluminium Nutrition 0.000 description 189
- 239000000243 solution Substances 0.000 description 75
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 50
- 230000007547 defect Effects 0.000 description 22
- 230000008569 process Effects 0.000 description 17
- 239000010407 anodic oxide Substances 0.000 description 16
- 238000000576 coating method Methods 0.000 description 16
- 239000011248 coating agent Substances 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 14
- 150000001412 amines Chemical class 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- 230000005611 electricity Effects 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 9
- 210000004027 cell Anatomy 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 7
- 230000002401 inhibitory effect Effects 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 230000036647 reaction Effects 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 239000003086 colorant Substances 0.000 description 6
- 239000002932 luster Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000011260 aqueous acid Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 150000002222 fluorine compounds Chemical class 0.000 description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- -1 amido sulfuric acids salt Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000001010 compromised effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910018134 Al-Mg Inorganic materials 0.000 description 1
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- 229910018467 Al—Mg Inorganic materials 0.000 description 1
- 229910018464 Al—Mg—Si Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 150000001398 aluminium Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- YXJYBPXSEKMEEJ-UHFFFAOYSA-N phosphoric acid;sulfuric acid Chemical compound OP(O)(O)=O.OS(O)(=O)=O YXJYBPXSEKMEEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
- C25F3/18—Polishing of light metals
- C25F3/20—Polishing of light metals of aluminium
-
- 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
-
- 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
-
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
-
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/20—Electrolytic after-treatment
-
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
Abstract
The present invention provides the electrobrightening processing method for the aluminium that industrially can easily manufacture the aluminium with gloss and uniform and excellent appearance.This method is the electrolytic polishing method that aluminium is impregnated in the electrolysis treatment fluid in electrolysis treatment trough, applies using aluminium as anode the surface progress electrobrightening processing that decomposition voltage comes to aluminium, it is the electrobrightening processing method of the aluminium comprised the steps of：Implement the pretreatment that anodized is handled as electrobrightening；Implement bubble diffusion preventing processing when electrobrightening is handled；And implement the post processing that the epithelium lift-off processing of electrobrightening epithelium is handled as electrobrightening.
Description
Technical field
The present invention relates to the electrobrightening processing methods of the aluminium formed by aluminum or aluminum alloy, are more particularly to suitble to manufacture tool
The electrobrightening processing method of the aluminium of the aluminium of glossy and uniform and excellent appearance.
Background technology
In the electrobrightening processing of aluminium, generated largely with the cell reaction of aluminium when its electrobrightening is handled
Hydrogen, bubble that the hydrogen is formed in electrolyte and be attached to the surface of the aluminium as treated object, the gas of the attachment
Bubble interferes the cell reaction of aluminium material surface, as a result attachment portion is caused to become spot defect after electrobrightening and significantly change, and damages
Glossiness and uniformity of the aluminium material surface after electrobrightening etc. is done harm to.
Then, the aluminium of the appearance in order to obtain with excellent gloss and uniformity is, it is necessary to prevent electrobrightening from handling
The bubble attachment of the middle aluminium material surface as treated object or needs remove the bubble of attachment, such as, it is proposed that make aluminium
The method for oscillating (non-patent literature 1) of vibration and the electrolyte by shaking aluminium and vibration blade mixer stirring electrolyte
The methods of stirring means (non-patent literature 2).
But on the method for oscillating and electrolyte stirring means described in these non-patent literatures 1 and 2, in aluminium shape
In the case of shape complexity and in the case of large area, it is difficult to entirely prevent uniform bubble in the whole surface of aluminium attached
It or is difficult to completely except the bubble of attachment removal, and electrobrightening processing is to use the processing of concentrated acid progress, it is necessary to using acidproof
Property excellent expensive material making make the device and vibration blade mixer that aluminium is vibrated or shaken, the maintenance management of equipment needs
Substantial amounts of labour and expense are wanted, method is not preferred from industry.
In addition, if stopping being powered after the completion of electrobrightening processing, then the electrolysis in the strong electrolytic polishing liquid of dissolubility is thrown
Aluminium material surface after light generates non-uniform dissolving, the appearance on surface and specular reflective (Japanese：Mirror faces property) it is compromised, therefore
In the presence of it is intended that anodic oxide coating (hereinafter referred to as " electrobrightening epithelium ") remaining situation that electrobrightening generates when handling.
But there is a situation where to need to remove remaining electrobrightening epithelium on the aluminium material surface after electrobrightening according to purposes.
Therefore, also the remaining electrobrightening epithelium of aluminium material surface after electrobrightening is removed in the past, for example, implementing following
Epithelium lift-off processing：By mixed aqueous solution of the aluminium material impregnation after electrobrightening in sodium hydrate aqueous solution, phosphoric acid and chromic acid, sulphur
In the stripping solutions such as acid or the aqueous solution of nitric acid and fluorine compounds, make the remaining anodic oxide coating dissolving of aluminium material surface and remove
(non-patent literature 3).
Although however, use the water-soluble of the mixed aqueous solution by phosphoric acid and chromic acid and sulfuric acid or nitric acid and fluorine compounds
Electrobrightening epithelium can selectively be dissolved and removed by the method for the epithelium lift-off processing for the stripping solution that liquid is formed, therefore
It is excellent method, but it is harmful substance in environmental sanitation to make chromic acid and fluorine compounds as main component, it is now true
On be difficult with, in addition, using in the epithelium lift-off processing method of the stripping solution formed by sodium hydrate aqueous solution, hydroxide
Sodium water solution makes the aluminum or aluminum alloy dissolving as blank, thus with surface electrobrightening epithelium dissolving blank not yet
It dissolves with can avoiding, the gloss as a result handled by electrobrightening to present is compromised to a certain extent.
Prior art literature
Non-patent literature
Non-patent literature 1：On October 17th, 1980, light metal published Co., Ltd.'s (light metal publishes Co., Ltd.) distribution
's《Aluminium surface technical manual》Page 106
Non-patent literature 2：Nearly Ji aluminium surfaces treatment research can proceedings (nearly Ji ア Le ミ ニ ウ system surface treatment research association meeting
Chi) No.188, ' 97,6-10 pages
Non-patent literature 3：Light metal communicating agent of Co., Ltd. on November 1st, 1969 (light metal communicating agent of Co., Ltd.) is sent out
Capable《Aluminium encyclopedia》Page 1017
The content of the invention
The technical problems to be solved by the invention
Then, present inventor for can solve the problems, such as with above-mentioned aluminium electrobrightening processing it is various and
Industrially easily manufacture is carried out with gloss and uniform and the aluminium of the aluminium of excellent appearance electrobrightening processing method
Conscientiously study, for aluminium electrobrightening handle start when and processing procedure in generated by the chemolysis with aluminium
Bubble attachment caused by spot defect the problem of and with remaining on the aluminium material surface implemented after the electrobrightening of aluminium
The problem of dissolving of electrobrightening epithelium removes, has carried out following discussions, has developed the method that can solve following problems.
First, for aluminium electrobrightening handle start when and processing procedure in the spot defect as caused by adhering to bubble
The problem of, carry out following discussions and exploitation.
That is, the mechanism of production of the spot defect generated when present inventor handles electrobrightening is studied in detail, knot
Fruit finds that the spot defect generated on the aluminium material surface after electrobrightening is not the pit (recess) thought always up to now,
But protrusion, in addition, the hydrogen of the producing cause as this spot defect, is more than handled by the electrobrightening of "on" position
What cell reaction in the process generated, when electrobrightening processing starts with obstructed electricity condition by aluminium material impregnation in electrolysis treatment fluid
When middle, aluminium contacts with electrolysis treatment fluid and generates chemolysis reaction, and the hydrogen generated at this time forms bubble and is attached to aluminium
Surface, the bubble of the attachment also hinder after electrobrightening processing when cell reaction, become the generation of spot defect
Reason.
Therefore, make the method for oscillating of the aluminium vibration as previous treated object and utilize the shake of aluminium or vibration leaf
The electrolyte stirring means of piece mixer are found that while to greatly improve compared with the situation for not using any countermeasure and standing
During the electrobrightening processing of aluminium as caused by adhering to bubble the problem of spot defect, but these method for oscillating and electrolyte stir
Mix in method vibration, shake or the adjustment of the intensity and size of stirring on need the skilled of substantial amounts of experience and height, and
And it cannot prevent when electrobrightening from being handled in the bubble for initially being generated aluminium material impregnation when treatment fluid is electrolysed with obstructed electricity condition
Attachment, once in addition, bubble is attached to the surface of aluminium, then method for oscillating and electrolyte when being difficult to handle by electrobrightening
Stirring means remove completely, further, can not particularly tackle the defects of slight on the surface of the aluminium after electrobrightening also not
Allow the high-quality appearance with gloss and excellent in uniform as minute surface generated.
Then, present inventors have developed following methods, the present invention is completed：During the electrobrightening processing of aluminium, to aluminium
Material have it is extremely strong it is deliquescent electrolysis treatment fluid in trigger on the surface of aluminium formed electrobrightening epithelium cell reaction and
Any reaction of the metallic aluminium in the dissolving reaction for being electrolysed chemolysis in treatment fluid, moreover, the initial stage of electrobrightening processing, is
Cell reaction is carried out in the strong electrolysis treatment fluid of dissolubility, it is necessary to which moment circulation high current was to cover the chemical solution of metallic aluminium
Solution and quickly form electrobrightening epithelium, be conceived to this, anodized implemented as at electrobrightening using defined condition
The pretreatment of reason, by inhibiting the initial stage of electrobrightening processing in the preformed anodic oxide coating of aluminium material surface by aluminium table
The hydrogen that the chemolysis in face generates, meanwhile, using the anodic oxide coating as the initial stage that electrobrightening is handled required electricity
Solution polishing epithelium is utilized.
In addition, for aluminium electrobrightening handle start when and processing procedure in the spot defect as caused by adhering to bubble
The problem of, carry out following discussions and exploitation.
That is, present inventor is in which way for the generation and attachment of bubble in the electrobrightening processing procedure of aluminium
What is generated is further studied, it turns out that, it is powered in the processing procedure of the electrobrightening processing after starting, as sun
The aluminium side of pole is nearly free from hydrogen, and hydrogen is mainly to be generated in the cathode side to electrode as the aluminium, in addition, the moon
To the aluminium side diffusion as anode, the bubble of the diffusion causes in the surface attachment of aluminium the hydrogen gas bubbles that pole side generates
Lead to the problem of spot defect.
Then, present inventor is directed to the bubble for the hydrogen for preventing the cathode side from generating to the aluminium side diffusion as anode
Method has carried out various researchs, it turns out that, form that non-permeable (bubble is non-by having to the bubble that generates in electrolysis treatment trough
Permeability) while there is permeability to electrolysis treatment fluid and can be ensured that the liquid permeability material of interelectrode electric conductivity
The cathode separation chamber of formation by configuring cathode in the cathode separation chamber, then can effectively prevent the hydrogen gas of cathode generation
The aluminium side diffusion to anode is steeped, so as to complete the present invention.
In addition, for the molten of the remaining electrobrightening epithelium of the aluminium material surface implemented after the electrobrightening of aluminium
Solution is removed and led to the problem of, and has carried out following discussions and exploitation.
That is, in the electrobrightening processing of aluminium, if leading to after the completion of processing directly by aluminium material impregnation in electrolysis treatment fluid
It crosses the electrolysis treatment fluid to dissolve the surface chemistry of aluminium, generates non-uniform chemolysis at this time and locally generating protrusion,
As a result become spot defect producing cause, it can thus be appreciated that need after processing is completed rapidly by the treatment fluid after electrobrightening from
It is taken out in electrolysis treatment fluid.However, this is electrolysed by electrobrightening processing while being the electrobrightening epithelium to form Porous type
The rapidly-soluble method of epithelium is polished, it follows that electrolysis treatment fluid has strong solubility to aluminium, be powered aluminium after stopping
Chemolysis takes place rapidly in surface, and therefore, it is difficult to the cell reaction when keeping electrobrightening processing and chemolysis reactions
Kilter and while obtain excellent specularity, prevent non-uniformization generated immediately after the completion of electrobrightening processing
Learn dissolving.
Then, as solving the problems, such as method that the chemolysis after electrobrightening causes, although in electrobrightening
The surface of aluminium afterwards intentionally make electrobrightening epithelium residual, after electrobrightening by remaining electrobrightening skin on the surface
Film dissolving removes, but as described above, there are problems in the dissolving removing for the electrobrightening epithelium implemented after the electrobrightening.
So present inventor is removed for the dissolving of the electrobrightening epithelium in the aluminium material surface after electrobrightening into traveling
The research of one step, the dissolving of electrobrightening epithelium (oxide) they are the chemolysis reactions of no charge movement, in contrast, base
The dissolving of material (metal) is accompanied by the electrochemical reaction of charge movement, is conceived to this, it is believed that it is anti-should to develop inhibition electrochemistry
The aftertreatment fluid for promoting the Selective dissolution of chemolysis reaction excellent while answering, developing the pH containing sulfuric acid and amine is
Less than 2 sulfuric acid solution, so as to complete the present invention.
Therefore, it is an object of the invention to provide industrially can easily manufacture with gloss and uniform and excellent
The electrobrightening processing method of the aluminium of the aluminium of appearance.
That is, the application provides following the first technical solution to the 4th technical solution, by these first technical solutions to the
Four technical solutions are concluded and form the present invention.
Technical scheme applied to solve the technical problem
The first technical solution of the application is the electrobrightening processing method of aluminium, it is the electrolysis in electrolysis treatment trough
Dipping is formed by aluminum or aluminum alloy in treatment fluid aluminium, using aluminium as anode application decomposition voltage and to the surface of aluminium into
The electrolytic polishing method of row electrobrightening processing, wherein, implement what following anodizeds were handled as the electrobrightening
Pretreatment：With the pretreatment tank that sets respectively of electrolysis treatment trough in, using by than the electrolysis treatment fluid to aluminium
The decomposition voltage when pretreatment fluid and use that the weaker polynary aqueous acid of dissolubility is formed are handled than the electrobrightening is more
Low voltage forms anodic oxide coating by the anodic oxidation of aluminiun materials, on the surface of aluminium.
In addition, the second technical solution of the application is the electrobrightening processing method of aluminium, it is in electrolysis treatment trough
Electrolysis treatment fluid in impregnate is formed by aluminum or aluminum alloy aluminium, using aluminium as anode application decomposition voltage and to aluminium
Surface carries out the electrolytic polishing method of electrobrightening processing, wherein, form following cathode separation chambers in the electrolysis treatment trough：
By to bubble non-permeable in the hydrogen gas bubbles that are generated as the aluminium to the cathode of electrode and simultaneously with liquid
The material of permeability is formed, and while the cathode is separated with aluminium, has the exhaust outlet discharged the hydrogen outside slot；Aluminium
During the electrobrightening processing of material, implement following bubble diffusion preventing processing：Prevent the cathode from separating what indoor cathode generated
While the hydrogen gas bubbles are to aluminium side diffusion, by the hydrogen gas outside exhaust outlet discharge slot.
Further, the 3rd technical solution of the application is the electrobrightening processing method of aluminium, it is in electrolysis treatment trough
In interior electrolysis treatment fluid impregnate is formed by aluminum or aluminum alloy aluminium, using aluminium as anode application decomposition voltage and to aluminium
Surface carry out electrobrightening processing electrolytic polishing method, wherein, as the electrobrightening processing post processing, under implementation
State epithelium lift-off processing：It is soaked in the aftertreatment fluid formed by the sulfuric acid solution that the pH containing sulfuric acid and amine is less than 2
Electrobrightening epithelium present on the aluminium material surface is dissolved and removed by the aluminium after stain electrobrightening.
Then, the 4th technical solution of the application is the electrobrightening processing method of aluminium, it is in electrolysis treatment trough
Electrolysis treatment fluid in impregnate is formed by aluminum or aluminum alloy aluminium, using aluminium as anode application decomposition voltage and to aluminium
Surface carries out the electrolytic polishing method of electrobrightening processing, wherein, implement the 2 kinds or 3 kinds processing for being selected from following processing：Described
The anodized as pretreatment implemented in one technical solution, at the electrobrightening implemented in second technical solution
The electrobrightening epithelium as post processing implemented in bubble diffusion preventing processing and the 3rd technical solution during reason
Epithelium lift-off processing.
In the present invention, for the aluminium formed by aluminum or aluminum alloy dealt with objects as electrobrightening, it is not particularly limited,
It is required that object can be all used as and the various aluminiums of mirror-polishing by being handled by electrobrightening, such as 2000 systems of Al-Cu systems can be enumerated
Material, 5000 based materials of Al-Mg systems, 6000 based materials of Al-Mg-Si systems.In these materials, it is especially high as aluminium purity and
It is required that the aluminium of the mirror-polishing of height, such as it is material that can enumerate more than 99.99% raffinal material and the 1000 of fine aluminium class
Expect (such as A1050 materials) etc..
In addition, on the aluminium, also its surface can be polished by emery wheel in advance, in a manner of machining or chemical polishing etc. into
First preparation mirror surface treatment is acted, the aluminium that the present invention implements this surface prepared mirror surface treatment in advance is also effective.
In addition, in the present invention, electrobrightening processing is carried out to aluminium in the electrolysis treatment fluid being electrolysed in treatment trough
When treatment conditions, in the past to aluminium carry out electrobrightening processing situation do not change especially, in electrolysis up to now
Composition, decomposition voltage, treatment temperature, processing time, the electrobrightening for the treatment of fluid handle inrush current (Japanese when starting：It is prominent
Enter Electricity streams) and other each condition in, can directly use the electrobrightening treatment conditions implemented always up to now.Herein,
As electrolysis treatment fluid, can enumerate with phosphoric acid-sulfuric acid (volume ratio 7:3) treatment fluid of composition has phosphorus acid-sulfur acid
(volume ratio 1:1) treatment fluid of composition etc..
The first technical solution of the application is the electrobrightening processing method of aluminium, wherein, implement at following anodic oxidations
Manage the pretreatment as electrobrightening processing：What is set respectively with the electrolysis treatment trough used in electrobrightening processing
In pretreatment tank, the pretreatment formed by polynary aqueous acid more weaker to the dissolubility of aluminium than the electrolysis treatment fluid is used
Liquid and using the lower voltage of decomposition voltage when being handled than the electrobrightening by the anodic oxidation of aluminiun materials, in aluminium
Surface forms anodic oxide coating.
Herein, as in the anodized of pretreatment importantly, with the pre- place that sets respectively of electrolysis treatment trough
It manages and implements anodized in slot, in addition, electrolysis when being used in anodized by being handled than the electrobrightening
When the pretreatment fluid and use that reason liquid polynary aqueous acid weaker to the dissolubility of aluminium is formed are handled than the electrobrightening
The lower voltage of decomposition voltage by the anodic oxidation of aluminiun materials, thereby, when pretreatment, can be in the easy landform in the surface of aluminium
Into desired anodic oxide coating.Moreover, electrolysis can be directly utilized as pre-processing by using this anodized
Power specification during polishing treatment, therefore need not in addition prepare dedicated power supply, in addition, the initial stage of electrobrightening processing is not required to
Power supply when high current being made to circulate and anodic oxide coating is formed on the surface of aluminium, therefore can reduce electrobrightening processing holds
Amount, can use relatively small and cheap supply unit.
In addition, on electrolysis when using in the anodized as the pretreatment by being handled than electrobrightening
The pretreatment fluid that liquid polynary aqueous acid weaker to the dissolubility of aluminium is formed is managed, specifically, can be enumerated dense with sulfuric acid
The aqueous sulfuric acid for spending the composition of 15 mass %, the oxalic acid aqueous solution of composition with 2 mass % of concentration of oxalic acid etc., at electrolysis
In the case of liquid and the pretreatment fluid are managed as same acid, such as in the case where acid is sulfuric acid, using than being electrolysed treatment fluid
Sulfuric acid concentration is lower or the higher aqueous sulfuric acid of pH value is as pretreatment fluid.In addition, on the anodic oxidation as pretreatment
The treatment conditions of processing do not have difference with the treatment conditions of common anodized.
Further, the anodic oxide coating formed on the aluminium material surface in the anodized as the pretreatment
Film thickness is the film thickness that general anodized is formed, is not particularly limited, and is usually tens of nm~tens of μm or so.
In addition, the second technical solution of the application is the electrobrightening processing method of aluminium, wherein, it is handled in the electrolysis
Following cathode separation chambers are formed in slot：By there is bubble to the hydrogen gas bubbles generated in the cathode to electrode as the aluminium
Material that is non-permeable and having liquid permeability simultaneously is formed, and while the cathode is separated with aluminium, is had by described in
Exhaust outlet outside hydrogen discharge slot；During the electrobrightening processing of aluminium, implement following bubble diffusion preventing processing：Prevent described the moon
While pole separates the hydrogen gas bubbles of indoor cathode generation to aluminium side diffusion, which is discharged from the exhaust outlet
Outside slot.
Herein, it is at least non-permeable by bubble on by cathode cathode separation chamber separated with the aluminium of anode
It is formed, had separated separates walls between cathode and aluminium and hydrogen exhaust mouth with liquid permeability material, in addition, can incite somebody to action
In the cathode separation chamber generate hydrogen from exhaust outlet discharge slot outside, then, as formed the cathode separation chamber material,
The multiple aperture plasma membrane of Teflon (テ Off ロ Application, registered trademark) system, such as the glass such as glass sintered filter and glass fibre can be enumerated
Filtering material made of glass etc..
Further, the 3rd technical solution of the application is the electrobrightening processing method of aluminium, wherein, as the electrolysis
Following epithelium lift-off processings are implemented in the post processing of polishing treatment：By the pH containing sulfuric acid and amine be less than 2 sulfuric acid
The aluminium after electrobrightening is impregnated in the aftertreatment fluid that solution is formed, electrobrightening epithelium present on the aluminium material surface is dissolved
And it removes.
On the aftertreatment fluid used in the epithelium lift-off processing as the post processing, the pH containing sulfuric acid and amine is used
For less than 2 sulfuric acid solution, in the aqueous solution of the sulfuric acid solution at least containing sulfate ion and/or sulfurous acid from
Son and the ammonium ion from amine, pH are usually less than 2, are preferably less than 1.5, if the pH value of the sulfuric acid solution surpasses
It crosses 2 and then there is a possibility that epithelium is almost undissolved.Can be that the sulfate of amine is dissolved in water as this aftertreatment fluid
In obtained by sulfuric acid solution sulfuric acid and amine are dissolved in water obtained by sulfuric acid solution or will
Sulfuric acid solution obtained by the sulfate of sulfuric acid, amine and amine is dissolved in water or be by amido sulfuric acid (amino
Sulfonic acid, sulfamic acid) or the amido sulfuric acids salt such as its ammonium salt be dissolved in water obtained by sulfuric acid solution, more preferably
The aqueous solution of amido sulfuric acid.Further, as modulating the amine of the sulfuric acid solution as aftertreatment fluid, can enumerate
Ammonia, the alkylamines such as methylamine, propylamine etc..
As the specific example for the epithelium lift-off processing implemented in the 3rd technical solution, such as use 3 mass %- amino
In the case that sulfonic acid aqueous solution is as aftertreatment fluid, the method impregnated with the treatment conditions of 70 DEG C and 10 minutes can be enumerated.
Then, the 4th technical solution of the application is the electrobrightening processing method of aluminium, wherein, implement 2 kinds or 3 kinds choosings
From the processing of following processing：The anodized as pretreatment in above-mentioned first technical solution, second technical side
The electrobrightening as post processing in bubble diffusion preventing processing and the 3rd technical solution when electrobrightening is handled in case
The epithelium lift-off processing of epithelium.
In 4th technical solution, in the case of two kinds of processing combinations, above-mentioned first technical solution, the second technical solution
And the 3rd the processing of technical solution can combine in any way, in the electrobrightening processing of aluminium, for example, can be by the first technology
The anodized of scheme is combined with the bubble diffusion preventing processing of the second technical solution, in addition, also can be by the first technical side
The epithelium lift-off processing of the anodized of case and the 3rd technical solution combines, further, can be by the gas of the second technical solution
The epithelium lift-off processing for steeping diffusion preventing processing and the 3rd technical solution combines, in addition, in the case of by three kinds of processing combinations,
The anodized of first technical solution, the bubble diffusion preventing processing of the second technical solution and the epithelium of the 3rd technical solution
Lift-off processing combination is handled with implementing the electrobrightening of aluminium.
In the case of the electrobrightening processing that two or three above of processing combination is implemented to aluminium, pretreatment, electricity
The effect as obtained by each processing can be reached in each process of solution polishing treatment and post processing respectively, therefore for conduct
The aluminium of the object of electrobrightening processing and the appearance requirements such as glossiness, uniformity for having, above two or three
Reason combination is implemented.
Invention effect
By the first technical solution, in the electrobrightening processing of aluminium, particularly at the electrolysis being electrolysed in treatment trough
Manage liquid in impregnate aluminium when, can inhibit aluminium material surface chemolysis reaction caused by hydrogen generation, can substantially reduce
The spot defect as caused by adhering to bubble can realize the outer of glossiness and excellent in uniform on the aluminium after electrobrightening
It sees, the high current in addition, initial stage of electrobrightening processing need not circulate can also realize the miniaturization of power-supply device.
In addition, by the second technical solution, aluminium will not be diffused in the hydrogen that the cathode to electrode as aluminium generates
The surface of material forms bubble, therefore can prevent spot defect caused by bubble attachment, can in the aluminium after electrobrightening
Realize glossiness and the appearance of excellent in uniform.
Further, by the 3rd technical solution, removing electrobrightening can selectively be dissolved using epithelium lift-off processing
Remaining electrobrightening epithelium on aluminium afterwards can realize glossiness and excellent in uniform on the aluminium after electrobrightening
Appearance.
Further, according to the 4th technical solution, by by above-mentioned first technical solution, the second technical solution and the 3rd
Solution pool and handled, the outer of glossiness and excellent in uniform can be realized on the aluminium after electrobrightening
It sees.
Description of the drawings
Fig. 1 is for illustrating the definition graph of the concept of the first technical solution, and (a) is denoted as at the anodic oxidation of pretreatment
Science and engineering sequence, in addition, (b) represents electrobrightening treatment process.
Fig. 2 is for illustrating the definition graph of the concept of the second technical solution, and (A) represents previous electrobrightening processing work
Sequence, in addition, (B) represents the electrobrightening treatment process of the second technical solution.
Specific embodiment
Hereinafter, the concept map of technical solution according to figure 1 illustrates the embodiment of the first technical solution, separately
Outside, the embodiment of second technical solution is illustrated according to the concept map of technical solution shown in Fig. 2, further, for
The preferred embodiment of 3rd technical solution illustrates.
Fig. 1 is for illustrating the definition graph of the concept of the electrobrightening processing method of the aluminium of the first technical solution, showing
The treatment process being made of anodized process (a) as pretreatment and electrobrightening treatment process (b).
In the Fig. 1, in anodized process (a), divide in the electrolysis treatment trough 1 with electrobrightening treatment process (b)
The pretreatment fluid 3 for the anodized implemented as pretreatment is filled in the pretreatment tank 2 not set, will be located
The aluminium 4 of object is managed as anode, applies DC voltage in anode and as between the cathode 5 to electrode of the aluminium 4, in aluminium
Surface forms anodic oxide coating 6.
Then, in the electrobrightening treatment process (b) of Fig. 1, it is electrolysed in treatment trough 1 and is filled with electrolysis treatment fluid 7, then
Surface is formed with the work of anodic oxide coating 6 in the anodized process (a) of pretreatment in the electrolysis treatment fluid 7
For the aluminium 4 of treated object, afterwards, using the aluminium 4 as anode, anode and as the aluminium 4 the cathode 8 to electrode it
Between apply DC voltage, so as to the surface of aluminium 4 implement electrobrightening processing.
In the electrobrightening treatment process (b), when being electrolysed dipping aluminium 4 in treatment fluid 7 (S1), as treated object
Aluminium 4 is impregnated in obstructed electricity condition in electrolysis treatment fluid 7, but the surface of the aluminium 4 is formed with anodic oxide coating 6, because
During the dipping of this obstructed electricity condition the metal covering of (S1) aluminium 4 it is not direct with electrolysis treatment fluid 7 contacts, in addition, at the electrolysis
The anodic oxide coating 6 on the surface for the aluminium 4 that reason liquid 7 contacts directly slow mechanism dissolved in treatment fluid 7 is electrolysed, does not also generate at this time
Hydrogen.
In addition, in the electrobrightening treatment process (b), if applying DC voltage between the aluminium 4 of anode and cathode 8
Start electrobrightening processing, then during the electrolysis processing of the aluminium 4 (S2), the anodic oxide coating 6 on 4 surface of aluminium is handled in electrolysis
Slow mechanism dissolved in liquid 7 and disappear, the Surface Creation electrobrightening epithelium 9 of aluminium 4 simultaneously generates the chemolysis of metallic aluminium, as a result,
Anodic oxide coating 6 slowly becomes insoluble, and the surface of aluminium 4 is by electrobrightening.
After handling by above-mentioned completion electrobrightening, stop being powered, immediately handle the aluminium 4 after electrobrightening from electrolysis
It is taken out in slot 1, is cleaned and air-dried with pure water, as the aluminium after electrobrightening.
Herein, as shown in Figure 1, at the end of the energization of electrobrightening processing (S3), the surface of the aluminium 4 after electrobrightening
On intentionally remain electrobrightening epithelium 9, afterwards when the remaining electrobrightening epithelium 9 is removed, continue implement the 3rd
Technical solution.In addition, the 3rd technical solution described below is by electrobrightening processing and the electrolysis throwing of the aluminium material surface of generation
Smooth bark film selectively dissolves the effective method of removing, therefore can not only implement after the first technical solution, also can with
Implement after past electrobrightening processing.
In 3rd technical solution, after the electrobrightening taken out at the end of electrobrightening is handled from electrolytic polishing liquid
Aluminium material impregnation is implemented in the aftertreatment fluid formed by the sulfuric acid solution that the pH containing sulfuric acid and amine is less than 2 by electricity
The remaining electrobrightening epithelium of aluminium material surface after solution polishing selectively dissolves the epithelium lift-off processing of removing.
After the completion of the epithelium lift-off processing, the aluminium after electrobrightening from rear treating groove is taken out, is washed immediately with pure water
Only and air-dry, as the aluminum product after electrobrightening.
Then, Fig. 2 be for illustrating the definition graph of the concept of the electrobrightening processing method of the aluminium of the second technical solution,
Fig. 2 (A) is using the definition graph of the electrobrightening treatment process of previous electrolysis treatment trough, in addition, Fig. 2 (B) is to use second
The electrobrightening treatment process of the electrolysis treatment trough of technical solution.
In the Fig. 2 (A) for showing previous electrolysis treatment trough 1, it is electrolysed in treatment trough 1 and is filled with electrolysis treatment fluid 7,
The aluminium 4 of middle dipping treated object, afterwards, using the aluminium 4 as anode, in the aluminium 4 and the moon to electrode as aluminium 4
Apply DC voltage between pole 8, electrobrightening processing is implemented to the surface of aluminium 4.Afterwards, this has used previous electrolysis to handle
In the electrobrightening processing of slot 1,8 side of cathode in electrobrightening processing generates hydrogen gas bubbles 10, expands in treatment fluid 7 is electrolysed
It dissipates, although the liquid level of wherein most bubble from electrolysis treatment fluid 7 disperses into air, a portion is to 4 side of aluminium
Diffusion in the surface attachment of the aluminium 4, becomes the reason for aluminium material surface after electrobrightening generates spot defect.
Corresponding to this, in the second technical solution, as shown in Fig. 2 (B), it is electrolysed in treatment trough 1 and is formed with by as aluminium
The hydrogen gas bubbles 10 generated at the cathode 8 to electrode of material 4 are non-permeable with bubble and material structure with liquid permeability
Into cathode separation chamber 11, which has the bubble that will generate while the cathode 8 is separated with aluminium 4
Exhaust outlet 12 outside 10 discharge slots, in the electrobrightening processing of aluminium 4, by preventing cathode 8 in the cathode separation chamber 11
The mode outside slot is discharged from exhaust outlet 12 while the bubble 10 for locating to generate is to 4 side diffusion of aluminium, by the bubble 10, can be utilized
The hydrogen gas bubbles 10 that the bubble diffusion preventing handles to prevent from generating at cathode 8 in electrobrightening processing are on the surface of aluminium 4
Attachment.
Embodiment
Hereinafter, the electrolytic polishing method of the aluminium of the present invention is specifically described based on embodiment and comparative example.
[Examples 1 to 3]
Using the plate of 99.99 mass % of Al purity as aluminium, 50mm × 50mm × 10mm sizes are cut out from the plate
Aluminium flake, using the pretreatment fluid shown in table 1, implement anodic oxygen with the treatment conditions (voltage, electricity and temperature) shown in table 1
Change processing as pretreatment, wash and dry, so as to obtain the pretreated aluminium flake of Examples 1 to 3.
For the pretreated aluminium flake of each embodiment achieved above, using the electrolysis treatment fluid shown in table 1, with table 1
Shown treatment conditions (temperature, voltage, time and inrush current) carry out electrobrightening processing, and washing and drying, obtains immediately
Aluminium flake (test film) after the electrobrightening of Examples 1 to 3.
[comparative example 1]
Use the aluminium flake identical with aluminium flake used in above-described embodiment 1~3, the unreal anodic oxidation applied as pretreatment
Processing, using the electrolysis treatment fluid shown in table 1, with the treatment conditions (temperature, voltage, time and inrush current) shown in table 1
Electrobrightening processing is carried out, washing and drying, has obtained the aluminium flake (test film) after the electrobrightening of comparative example 1 immediately.
[evaluation of bubble tachment inhibiting in processing]
In the processing of the electrobrightening of above-described embodiment 1~3 and comparative example 1, from glass system treatment trough outside with visually right
Aluminum flake surface is observed, and the hydrogen gas bubbles of the aluminum flake surface attachment of each embodiment and comparative example is investigated, with zero：Bubble-free is attached
It, △：It pays below 2, bubble (per 1cm2) and ×：3, bubble or more is paid (per 1cm2) benchmark to electrobrightening at
Bubble tachment inhibiting effect (the bubble tachment inhibiting in processing procedure) in reason is evaluated.
The results are shown in tables 1.
[evaluation of visual inspection]
In addition, for each test film of gained in above-described embodiment 1~3 and comparative example 1, it is following outer visually to have carried out
Observation, has investigated bright luster and spot defect, has been evaluated.
On bright luster, observed by visual observation to the visual effect of object mirrored on sample with zero：It is not crooked
And it clearly mirrors, △：Clearly mirror but part generate it is crooked and ×：The crooked seriously benchmark pair without mirroring
The degree of adhesion of bubble in electrobrightening processing is evaluated.
In addition, on spot defect, under fluorescent light to the surface of each test film visually to observe, to what is identified
The number of spot defect is counted, with zero：0/cm2、△：1/cm2Less than 3/cm2And ×：3/cm2
Above benchmark is evaluated.
The results are shown in tables 1.
[table 1]
[embodiment 4~5]
Using to hydrogen have bubble it is non-permeable and simultaneously for liquid permeability material Teflon (テ Off ロ Application, note
Volume trade mark) porous mass filter (embodiment 4) or glass fibre filter (embodiment 5) are made, it is handled for electrobrightening
Slot in, formed while cathode is separated with anode (aluminium), there is the hydrogen gas bubbles row generated during electrobrightening is handled
Go out the cathode separation chamber of the exhaust outlet outside slot, constitute electrolysis treatment trough.
In addition, as aluminium, the Al purity 99.99 mass % identical with the aluminium flake used in above-described embodiment 1~3 is used
Aluminium flake.
Then, (mass ratio of sulfuric-phosphoric is 1 to the electrolysis treatment fluid in the electrolysis treatment trough shown in addition table 2:5
Solution), implement bubble expansion using cathode separation chamber with the treatment conditions (temperature, voltage, time and inrush current) shown in table 2
Dissipating prevents from handling, while carries out electrobrightening processing to above-mentioned aluminium flake, carries out washing and drying immediately afterwards, has obtained embodiment 4
Aluminium flake (test film) after~5 electrobrightening.
On the test film of gained embodiment 4~5, to have investigated processing procedure with 1~3 same condition of above-described embodiment
Middle bubble tachment inhibiting, bright luster and spot defect, are evaluated.
These results and the above-mentioned comparative example 1 without bubble diffusion preventing processing are shown in table 2 jointly.
[table 2]
[embodiment 6~7 and comparative example 2~3]
After implementing electrobrightening processing in the same manner as above-mentioned comparative example 1, using the aftertreatment fluid shown in table 3, with shown in table 3
Condition implementation impregnated in aftertreatment fluid and using the epithelium lift-off processing that electrobrightening epithelium is removed as post-process, obtain
Aluminium flake (test film) after the electrobrightening of embodiment 6~7 and comparative example 2~3.
On gained embodiment 6~7 and the test film of comparative example 2~3, with 1~3 same condition of above-described embodiment
Bubble tachment inhibiting, bright luster and spot defect in processing procedure have been investigated, has been evaluated.
The results are shown in tables 3.
[table 3]
[embodiment 8~11]
Using the aluminium flake of the Al purity 99.99 mass % identical with aluminium flake used in above-described embodiment 1~3 as aluminium
Material, as shown in table 4, carry out the pretreatment (anodized) of embodiment 1, the bubble diffusion preventing of embodiment 4 processing, with
And/or the post processing (epithelium lift-off processing) of embodiment 6, obtain (the experiment of the aluminium flake after the electrobrightening of embodiment 8~11
Piece).
It is treated to have been investigated with 1~3 same condition of above-described embodiment on the test film of gained embodiment 8~11
The presence or absence of bubble tachment inhibiting, bright luster, spot defect and interference colours, are evaluated in journey.In addition, these are commented
In valency project, all items are that (no interference colours have the bright luster that defect is not confirmed in wide scope to good situation
Sample) be denoted as ◎, any two project or three good situations of project are denoted as zero, implement overall merit.
On the presence or absence of interference colours, each test film is made to be tilted with 70 ° under fluorescent light, its surface is visually observed,
The interference colours of electrobrightening epithelium are confirmed, with zero：Interference colours, △ are not observed completely：It observed in a part for sample
Interference colours and ×：The benchmark that observed interference figure on entire sample is evaluated.
The results are shown in tables 4.
[table 4]
Symbol description
A ... anodizeds process, b ... electrobrightenings treatment process, the obstructed electricity condition of S1 ... electrobrightenings processing
Dipping when, S2 ... electrobrightenings processing electrolysis processing when, S3 ... electrobrightenings processing energization at the end of, at 1 ... electrolysis
Manage slot, 2 ... pretreatment tanks, 3 ... pretreatment fluids, 4 ... aluminiums (treated object), 5,8 ... cathodes, 6 ... anodic oxide coatings, 7 ...
It is electrolysed treatment fluid, 9 ... electrobrightening epitheliums, 10 ... hydrogen gas bubbles, 11 ... cathode separation chambers, 12 ... exhaust outlets.
Claims (1)
1. the electrobrightening processing method of aluminium, it is to be impregnated in the electrolysis treatment fluid being electrolysed in treatment trough by aluminum or aluminum alloy
Aluminium is applied decomposition voltage as anode and the electrobrightening of electrobrightening processing is carried out to the surface of aluminium by the aluminium of formation
Method, which is characterized in that
Following cathode separation chambers are formed in the electrolysis treatment trough：By to being generated in the cathode to electrode as the aluminium
Hydrogen gas bubbles it is non-permeable with bubble and the material with liquid permeability is formed simultaneously, the cathode is separated with aluminium
While, there is the exhaust outlet discharged the hydrogen outside slot；During the electrobrightening processing of aluminium, it is anti-to implement following bubble diffusions
Only handle：While preventing that the cathode from separating the hydrogen gas bubbles of indoor cathode generation to aluminium side diffusion, by the hydrogen gas
Body is outside exhaust outlet discharge slot.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-262340 | 2013-12-19 | ||
| JP2013262340A JP6078851B2 (en) | 2013-12-19 | 2013-12-19 | Method for electrolytic polishing of aluminum material |
| CN201480069286.7A CN105829585A (en) | 2013-12-19 | 2014-10-31 | Method for performing electropolishing treatment on aluminum material |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480069286.7A Division CN105829585A (en) | 2013-12-19 | 2014-10-31 | Method for performing electropolishing treatment on aluminum material |
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| CN108060452A true CN108060452A (en) | 2018-05-22 |
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| CN201480069286.7A Pending CN105829585A (en) | 2013-12-19 | 2014-10-31 | Method for performing electropolishing treatment on aluminum material |
| CN201711320047.6A Pending CN108060452A (en) | 2013-12-19 | 2014-10-31 | The electrobrightening processing method of aluminium |
| CN201711318826.2A Pending CN107858743A (en) | 2013-12-19 | 2014-10-31 | The electrobrightening processing method of aluminium |
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| US (1) | US20160376725A1 (en) |
| JP (1) | JP6078851B2 (en) |
| KR (1) | KR20160100343A (en) |
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| US20180298512A1 (en) * | 2017-04-13 | 2018-10-18 | General Electric Company | Electropolishing and anodizing method for brush holder apparatus |
| CN111235579A (en) * | 2019-12-31 | 2020-06-05 | 南方科技大学 | Metal polishing method |
| CN111088503A (en) * | 2019-12-31 | 2020-05-01 | 中山市皓祥模具五金有限公司 | Surface treatment process for aluminum product |
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| CN1006000B (en) * | 1985-04-23 | 1989-12-06 | 东北工学院 | Method to produce white film on surface of aluminum or aluminum alloys |
| ATE299099T1 (en) * | 1999-04-22 | 2005-07-15 | Fuji Photo Film Co Ltd | METHOD FOR PRODUCING AN ALUMINUM SUPPORT FOR LITHOGRAPHIC PRINTING PLATES |
| JP4703803B2 (en) * | 1999-10-08 | 2011-06-15 | 株式会社アルバック | Method for electrolytic polishing of aluminum material |
| KR100371564B1 (en) * | 2000-10-27 | 2003-02-07 | 삼성테크윈 주식회사 | Metal finishing apparatus and metal finishing method using the same |
| DE10149928C1 (en) * | 2001-10-10 | 2002-12-12 | Wkw Erbsloeh Automotive Gmbh | Process for treating the surface of a workpiece made from aluminum or aluminum alloy used in the manufacture of car trims comprises polishing the workpiece in an aqueous electrolyte by applying an electrical direct voltage |
| JP4929679B2 (en) * | 2005-10-26 | 2012-05-09 | 日本ケミコン株式会社 | Method for producing aluminum etching foil |
| CN102649209B (en) * | 2011-02-23 | 2015-08-12 | 汉达精密电子(昆山)有限公司 | A kind of preparation method of aluminum alloy appearance part |
| CN103122475B (en) * | 2011-11-21 | 2015-11-25 | 比亚迪股份有限公司 | A kind of aluminium alloy electric chemical brightening solution and a kind of aluminium alloy electric chemically polishing method |
-
2013
- 2013-12-19 JP JP2013262340A patent/JP6078851B2/en not_active Expired - Fee Related
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2014
- 2014-10-31 KR KR1020167019028A patent/KR20160100343A/en not_active Application Discontinuation
- 2014-10-31 US US15/102,985 patent/US20160376725A1/en not_active Abandoned
- 2014-10-31 CN CN201480069286.7A patent/CN105829585A/en active Pending
- 2014-10-31 WO PCT/JP2014/079045 patent/WO2015093159A1/en active Application Filing
- 2014-10-31 CN CN201711320047.6A patent/CN108060452A/en active Pending
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- 2014-11-06 TW TW103138551A patent/TWI636160B/en not_active IP Right Cessation
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| Title |
|---|
| 王鲁杨等: "《工业用电设备》", 30 September 2006, 中国电力出版社 * |
| 许振明等: "《铝和镁的表面处理》", 31 October 2005, 上海科学技术文献出版社 * |
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|---|---|
| WO2015093159A1 (en) | 2015-06-25 |
| CN105829585A (en) | 2016-08-03 |
| TWI636160B (en) | 2018-09-21 |
| KR20160100343A (en) | 2016-08-23 |
| TW201538802A (en) | 2015-10-16 |
| CN107858743A (en) | 2018-03-30 |
| JP2015117418A (en) | 2015-06-25 |
| JP6078851B2 (en) | 2017-02-15 |
| US20160376725A1 (en) | 2016-12-29 |
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