CN104404487A - Passivator and preparation method thereof - Google Patents
Passivator and preparation method thereof Download PDFInfo
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- CN104404487A CN104404487A CN201410667682.1A CN201410667682A CN104404487A CN 104404487 A CN104404487 A CN 104404487A CN 201410667682 A CN201410667682 A CN 201410667682A CN 104404487 A CN104404487 A CN 104404487A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
- C23C22/33—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also phosphates
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/37—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/37—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds
- C23C22/38—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds containing also phosphates
Abstract
The invention discloses a passivator which mainly comprises the following materials: one or two acids, one or two hexavalent chrominide compounds and one or more reducing agents, wherein the raw materials react; the hexavalent chrominide compounds are reduced into trivalent chrominide compounds. When the passivator disclosed by the invention replaces a hexavalent chromium-containing passivator for passivation of an aluminium workpiece, harm to human health and environmental pollution of wastewater produced in the passivation process can be reduced.
Description
Technical field
The present invention relates to passivator aluminium workpiece being carried out to passivation, also relate to the preparation method of this kind of passivator.
Background technology
Aluminium workpiece is commercially applied widely, generally, the surface of aluminium workpiece can be in atmosphere exposed, easily chemical reaction is there is with acidic substance, alkaline matter, if do not carry out Passivation Treatment to the surface of aluminium workpiece, will soon there is chemical stain, damage and corrosion phenomenon in the surface of aluminium workpiece.At present, industrial more be use the passivator containing hexavalent chromium compound to carry out Passivation Treatment to the surface of aluminium workpiece, form the passive film of one deck containing sexavalence at aluminium workpiece surface.This chromyl passivator, the effect of the surface of aluminium workpiece being carried out to Passivation Treatment is fine, but, the waste water produced in the process of process is also containing sexavalent chrome, sexavalent chrome has high toxicity and carinogenicity, can endanger the life security of people, and can pollute surrounding enviroment.
In order to overcome above-mentioned defect, also have people trivalent chromium compound to be directly used in passivator, but due to trivalent chromium compound expensive, fail on a large scale application in the industrial production always.
Summary of the invention
The object of this invention is to provide a kind of passivator, can be solved at least one in above-mentioned prior art problem.
Second object of the present invention is to provide a kind of preparation method of passivator, can solve at least one in above-mentioned prior art problem.
According to an aspect of the present invention, provide a kind of passivator, the material primarily of following mass fraction forms: acid 10 ~ 30 parts, sexavalent chrome compound 10 ~ 13 parts and reductive agent 2 ~ 6 parts.
Above-mentioned acid is one or more in phosphoric acid, hydrofluoric acid, silicofluoric acid, citric acid and nitric acid.
Above-mentioned sexavalent chrome compound be chromic trioxide or/and potassium bichromate,
Above-mentioned reductive agent is one or more in the bad acid of anti-blood, formaldehyde and methyl alcohol.
Passivator of the present invention reacts for raw material with acid, sexavalent chrome compound, reductive agent, sexavalent chrome compound is reduced into the trivalent chromium Chemistry and Physics Institute obtains.Passivator of the present invention, cost is lower, is applicable to industrial production.Select passivator of the present invention to carry out Passivation Treatment to aluminium workpiece, the harm of waste water to HUMAN HEALTH that produces in Passivation Treatment process and the pollution to environment can be reduced.
In some embodiments, passivator of the present invention can also comprise resin, and its mass fraction is 2 ~ 12 parts.This resin can be water soluble acrylic resin or water solubility poly-ammonia-adeps resin.Thus, add suitable modified resin, after using passivator of the present invention to carry out Passivation Treatment to the surface of aluminium, one deck can be formed and closely cover passive film on aluminium material surface, to aluminium japanning, the stability of enamelled coating substrate can be increased.
In some embodiments, passivator of the present invention can also comprise nano silicon-water miscible liquid, and its mass fraction is 3 ~ 5 parts.In nano silicon-water miscible liquid, the mass concentration of nano silicon is 10 ~ 30%.Nanometer two sample SiClx is combined with chromium compounds after the acid organosilane of resin formation, is attached to metallic surface, defines one deck passive film in metallic surface, improve the protected effect of passive film by coordination compound effect.
According to another aspect of the present invention, additionally provide the preparation method of passivator, comprise the following steps:
(1) get each material in the ratio in any one of Claims 1 to 4 to mix;
(2) water that mass fraction is 70 ~ 80 parts is added, sealing (the general PE plastic tank that adopts seals);
(3) lower reaction 1 ~ 2 hour (generally stirring with 80-120 rev/min of speed) is stirred.In the present invention, the preparation method of passivator, simple to operate, and processing requirement is simple, suitable for large-scale promotion.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
Each material to be asked for, mixing by table 1.
Add the water that mass fraction is 70 ~ 80 parts, adopt PE plastic tank to seal.
Stir with 80-120 rev/min of speed, react 1 ~ 2 hour, passivator of the present invention.
Table 1 (unit: mass fraction)
Passivator of the present invention is acidic liquid, slight corrosion can be carried out to aluminium, in corrosion process, the surface pH of aluminium rises, cause phosphoric acid salt and/or fluorochemical (or other salt) to be separated out also and resin-bonded, formation one deck closely covers the trivalent chromium passivation film on aluminium material surface.
Respectively four groups of aluminium workpiece being processed preparing the passivator obtained in above-described embodiment by following technique, obtaining first group of workpiece A1-A22, second group of workpiece C1-C22, the 3rd group of workpiece E1-CE22, the 4th group of workpiece G1-G22 respectively:
(1) acid or alkali is used to clean aluminium workpiece.
(2) pure water is then made to clean aluminium workpiece.
(3) the aluminium workpiece after cleaned is ground and polishing, then make pure water clean aluminium workpiece.
(4) aluminium workpiece is soaked prepare in the above-described embodiments in the passivator obtained and carry out Passivation Treatment.
(5) the aluminium workpiece pure water after Passivation Treatment is cleaned, then dry.
Meanwhile, also traditional sexavalent chrome passivator (SY-072 sexavalent chrome passivator, CoaTechPass-606, ANT-637 sexavalent chrome color passivating agent and sexavalent chrome five colours passivator) is processed with the aluminium workpiece that above-mentioned technique is identical to four groups of specifications and obtain first group of workpiece B1-B4, second group of workpiece D1-D4, the 3rd group of workpiece F1-F4, the 4th group of workpiece H1-H4 respectively.The workpiece obtained is carried out respectively neutral salt spray test, the folding test of colored paint varnish, the shock-resistant test of paint film and attached Force meansurement.
One, neutral salt spray test
The workpiece A1-A22 obtained and workpiece B1-B4 is carried out neutral salt spray test, by logging as in table 2 by the method for GB/T1771-1991 respectively.
Instrument required for neutral salt spray test: salt-spray cabinet one;
Test solution required for neutral salt spray test: the sodium-chlor test solution of 5%;
Test plate (panel) required for neutral salt spray test: workpiece A1-A22 and workpiece B1-B4, wherein workpiece A1-A22 and workpiece B1-B4 is carved with the cut of same degree, and each workpiece is divided into no marking Part and has scored portion part;
Condition required for neutral salt spray test: test plate (panel) is the inclination of about 20 °, testedly faces up, the temperature in proofing box about 35 °, continuously spraying 1000 hours (except inspection, spraying is not interrupted);
Result observed by neutral salt spray test: observe the foaming of test plate (panel) coating, get rusty, the corrosion of cut place spreads.
The method of neutral salt spray test:
1, be placed in salt-spray cabinet by workpiece A1-A22 and workpiece B1-B4, the temperature setting salt-spray cabinet is 35 °.
2, adjusting workpiece A1-A22 and workpiece B1-B4 is the angular slope of 20 °, and the examination face ensureing workpiece A1-A22 and workpiece B1-B4 all upward.
3, the sodium-chlor test solution of 5% is used to spray to the examination face of workpiece A1-A22 and workpiece B1-B4, continuously spraying 1000 hours (except inspection, spraying is not interrupted).
Table 2
From table 2, use passivator of the present invention to carry out to aluminium workpiece the workpiece that Passivation Treatment obtains, after neutral salt spray test, coating without foaming, nothing is got rusty, cut place is corrosion-free spreads, reach national standard, and suitable with the effect of the traditional sexavalent chrome passivator of use.
Two, colored paint varnish folding test
The workpiece C1-C22 obtained and workpiece D1-D4 is carried out the folding test of colored paint varnish, by logging as in table 3 by the method for GB/T6742-2007 respectively.
Instrument required for the folding test of colored paint varnish: bending tester one;
Test plate (panel) required for the folding test of colored paint varnish requires: the soft aluminium sheet workpiece C1-C22 and the workpiece D1-D4 that meet GB/T8271 requirement, and test plate (panel) thickness is not more than 1.0mm, and ensures that test plate (panel) is smooth, and tow sides do not have visible to swell or cracking;
Result observed by the folding test of colored paint varnish: observe coating and whether ftracture or peel off from ground under the illumination condition of abundance.
The testing sequence of colored paint varnish folding test is as follows:
1, open bending tester, load onto suitable axle and adjust, insert test plate (panel), make test plate (panel) to be measured be in vertical position, and be coupling tactile.
2, by rotating adjusting bolt clamping test plate (panel), rotating bolt handle makes bending part and coating layer touch.
3, in 1-2s, lifting spiral handle with constant speed makes it turn over 180 °, and test plate (panel) also bends 180 ° thereupon.
Table 3
From table 3, use passivator of the present invention to carry out to aluminium workpiece the workpiece that Passivation Treatment obtains, after the folding test of colored paint varnish, coating is without cracking or protuberance or from phenomenons such as ground peel off, reach national standard, and suitable with the effect of the traditional sexavalent chrome passivator of use.
Three, the shock-resistant test of paint film
The workpiece E1-E22 obtained and workpiece F1-F4 is tested according to the standard of the shock-resistant assay method of GB/T1732-93 paint film, and by test result record in table 4.
Instrument required for the shock-resistant assay method test of paint film: impact tester one, wherein impact tester comprises slide cartridge (height of slide cartridge is 50cm ± 0.1cm), anvil, weight (quality of weight is 1000g), magnifying glass;
Test plate (panel) required for the shock-resistant assay method test of paint film: workpiece E1-E22 and workpiece F1-F4;
The inspection of the shock-resistant assay method test-results of paint film: use magnifying glass to observe, judges that coating has flawless, wrinkle and the phenomenon such as to peel off.
The testing sequence of the shock-resistant assay method test of paint film:
1, the coated membrane of workpiece E1-E22 and workpiece F1-F4 lain in upward on anvil successively, the workpiece part that is hit is no less than 15mm apart from edge, and the border of each shock point must not be less than 15mm;
2, weight is fixed on a certain height (height is specified by the standard of product or decided through consultation) of slide cartridge, pressing control knob, and namely weight freely falls within drift;
3, mention weight, take out test plate (panel).
Table 4
From table 4, passivator of the present invention is used to carry out to aluminium workpiece the workpiece E1-E22 that Passivation Treatment obtains, after the shock-resistant assay method test of paint film, enamelled coating flawless, wrinkle and the phenomenon such as to peel off, reach national standard, and suitable with traditional sexavalent chrome passivator effect.
Four, attached Force meansurement
The workpiece G1-G22 obtained and workpiece H1-H4 is carried out the test of attached Force meansurement-hundred lattice method.
Wherein, the judgement grade of attached Force meansurement-hundred lattice method:
5B-scribing edge is smooth, line edge and point of crossing place all without peeling paint;
4B-has the peeling paint of small pieces at the point of crossing place of line, and the total area that comes off is less than 5%;
3B-has the peeling paint of small pieces at the edge of line and point of crossing place, and the total area that comes off is 5% ~ 15%;
2B-has peeling paint in blocks at the edge of line and point of crossing place, and comes off the total area between 15% ~ 35%;
1B-has peeling paint in blocks at the edge of line and point of crossing place, and comes off the total area between 35% ~ 65%;
0B-has peeling paint in blocks at the edge of line and point of crossing place, and the total area that comes off is greater than 65%.
Test outfit: blade a slice (knife edge angle is 15 ° ~ 30 °) or multitool (spacing of the edge of a knife is 1 ㎜-2 ㎜);
Test plate (panel) required for test: workpiece G1-G22 and workpiece H1-H4;
Result judges: as qualified during the sticking power >=4B of inspecting standard as workpiece coated membrane.
The step of test:
1, be cut out crossed grid spirte in the coated membrane of workpiece G1-G22 and workpiece H1-H4 respectively with blade, otch until ground (cut and wear coated membrane entire depth),
2, be attached on otch with glued membrane, make glued membrane adhesion coated membrane, glued membrane of then firmly tearing,
3, the grid area of magnifying glass to workpiece G1-G22 and workpiece H1-H4 coated membrane is used to observe.
4, by logging in table 5.
Table 5
From table 5, use passivator of the present invention to carry out to aluminium workpiece the workpiece that Passivation Treatment obtains, after living the test of attached Force meansurement-hundred lattice method, enamelled coating sticking power >=4B, reaches standard-required, and suitable with traditional sexavalent chrome passivator effect.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (5)
1. passivator, is characterized in that, the material primarily of following mass fraction forms: acid 10 ~ 30 parts, sexavalent chrome compound 10 ~ 13 parts and reductive agent 2 ~ 6 parts,
Described acid is one or more in phosphoric acid, hydrofluoric acid, silicofluoric acid, citric acid and nitric acid,
Described sexavalent chrome compound be chromic trioxide or/and potassium bichromate,
Described reductive agent is one or more in the bad acid of anti-blood, formaldehyde and methyl alcohol.
2. passivator according to claim 1, is characterized in that, also comprises resin, and the mass fraction of described resin is 2 ~ 12 parts.
3. passivator according to claim 2, is characterized in that, described resin is water soluble acrylic resin or water solubility poly-ammonia-adeps resin.
4. passivator according to claim 2, is characterized in that, also comprises nano silicon-water miscible liquid, and the mass fraction of nano silicon-water miscible liquid is 3 ~ 5 parts.
5. the preparation method of the passivator described in any one of Claims 1 to 4, is characterized in that, comprise the following steps:
(1) get each material in the ratio in any one of Claims 1 to 4 to mix;
(2) water that mass fraction is 70 ~ 80 parts is added, sealing;
(3) lower reaction 1 ~ 2 hour is stirred.
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| CN201410667682.1A CN104404487A (en) | 2014-11-19 | 2014-11-19 | Passivator and preparation method thereof |
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| CN201410667682.1A CN104404487A (en) | 2014-11-19 | 2014-11-19 | Passivator and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105088208A (en) * | 2015-09-22 | 2015-11-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Trivalent chrome complex for hot dip aluminum-zinc plate and preparation method of trivalent chrome complex |
| CN105331960A (en) * | 2015-11-02 | 2016-02-17 | 麦垲门电子科技(上海)有限公司 | Pole lug aluminum strip surface treatment passivation solution |
| CN106016652A (en) * | 2016-07-04 | 2016-10-12 | 珠海格力电器股份有限公司 | Air conditioner outer air deflector, manufacture method thereof and air conditioner comprising same |
| CN106191847A (en) * | 2016-08-26 | 2016-12-07 | 青岛张氏机械有限公司 | Piston rod passive oxidation agent and the application in preparation silver gray piston rod thereof |
| CN106435552A (en) * | 2016-08-16 | 2017-02-22 | 贵州理工学院 | Cyanide-free galvanized coating passivation liquid and preparing method and application thereof |
| CN107385424A (en) * | 2017-08-30 | 2017-11-24 | 贵州银花妆开发有限公司 | A kind of seamless welding passivating solution and its application |
| CN108796584A (en) * | 2017-04-28 | 2018-11-13 | 宝山钢铁股份有限公司 | A kind of tin-plated product surface passivated membrane structural flexibility control method |
| CN109518173A (en) * | 2018-12-17 | 2019-03-26 | 熊映明 | The Al alloy powder spraying pretreatment water-saving configuration of chromaking line ejected wash water differential concatenation |
| CN109609938A (en) * | 2018-12-06 | 2019-04-12 | 苏州康索机电有限公司 | A kind of method of cast(ing) surface passivation |
| CN109868465A (en) * | 2019-01-28 | 2019-06-11 | 安徽唯楚新材料有限公司 | A kind of aluminium sheet passivating solution and preparation method thereof |
| CN110629212A (en) * | 2018-06-25 | 2019-12-31 | 中国航发商用航空发动机有限责任公司 | Surface treatment liquid for aviation aluminum alloy and use method thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088208A (en) * | 2015-09-22 | 2015-11-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Trivalent chrome complex for hot dip aluminum-zinc plate and preparation method of trivalent chrome complex |
| CN105088208B (en) * | 2015-09-22 | 2018-04-27 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of hot dip aluminum zinc plate trivalent chromium complex and preparation method thereof |
| CN105331960A (en) * | 2015-11-02 | 2016-02-17 | 麦垲门电子科技(上海)有限公司 | Pole lug aluminum strip surface treatment passivation solution |
| CN105331960B (en) * | 2015-11-02 | 2017-11-28 | 麦垲门电子科技(上海)有限公司 | Lug aluminium strip Surface treatment passivation solution |
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| CN106016652A (en) * | 2016-07-04 | 2016-10-12 | 珠海格力电器股份有限公司 | Air conditioner outer air deflector, manufacture method thereof and air conditioner comprising same |
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| CN109609938A (en) * | 2018-12-06 | 2019-04-12 | 苏州康索机电有限公司 | A kind of method of cast(ing) surface passivation |
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Application publication date: 20150311 |