CN107523820A - A kind of inorganic acid passivating solution for electro-galvanized layer - Google Patents
A kind of inorganic acid passivating solution for electro-galvanized layer Download PDFInfo
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- CN107523820A CN107523820A CN201710535549.4A CN201710535549A CN107523820A CN 107523820 A CN107523820 A CN 107523820A CN 201710535549 A CN201710535549 A CN 201710535549A CN 107523820 A CN107523820 A CN 107523820A
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- passivating solution
- inorganic acid
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- galvanized layer
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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
- C23C22/40—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 molybdates, tungstates or vanadates
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a kind of inorganic acid passivating solution for electro-galvanized layer, it is related to field of metal surface treatment technology, by following material composition：Molybdate, tungstates, silicate, hydrogen peroxide, auxiliary agent, water.Passivating solution produced by the present invention has the characteristics of green, safety non-pollution, and working process quality is good, manufacture efficiency high the characteristics of, great popularization.
Description
Technical field
The present invention relates to field of metal surface treatment technology, and in particular to a kind of inorganic acid for electro-galvanized layer is passivated
Liquid.
Background technology
Zinc is a kind of important non-ferrous metal, and electrogalvanizing is the effective way for improving steel resistance to corrosion, is being navigated at present
The fields such as sky, traffic, electric power, ship, machinery are using quite varied.In the processing and manufacturing of pump, its shell, ring flange, base,
Most parts such as reinforcement form by steel processing and manufacturing, and would generally carry out electro-galvanized layer protective treatment.Zinc is in drying
In the air of cleaning, corrosion rate very little, but be easily used to corrode in a humid environment, therefore, zinc coat need to enter
Row Passivation Treatment.Chromating processing is generally carried out, but because chromate toxicity is high and carcinogenic, environment can be polluted,
It has been environmentally protected the increasingly strict limitation of regulation；People are always in the change for seeking more to meet ecological requirements for this for many years
Compound, to substitute the Passivation Treatment that chromate carries out zinc coat.Wherein inorganic matter protection is that those skilled in the art study emphatically
One of direction, but the problems such as it is loose to there is film layer, antiseptic property deficiency, also has plenty of time length, and color is not also beautiful, because
This researches and develops a kind of one of the problem of effectively substituting traditional chromating liquid to be those skilled in the art's urgent need to resolve.
The content of the invention
The present invention is intended to provide a kind of inorganic acid passivating solution for electro-galvanized layer, has ecological, environmental protective, using effect good
The characteristics of.
The present invention is achieved through the following technical solutions：
A kind of inorganic acid passivating solution for electro-galvanized layer, by the material composition of following parts by weight：
25 ~ 30 parts of molybdates, 15 ~ 20 parts of tungstates, 10 ~ 15 parts of silicate, 6 ~ 12 parts of hydrogen peroxide, 5 ~ 8 parts of auxiliary agents, 800 ~ 1000
Part water；The auxiliary agent by following parts by weight material composition：3 ~ 5 parts of phthalic anhydrides, 4 ~ 7 parts of triethylene diamines, 15 ~ 18 parts
Acrylic resin, 3 ~ 6 parts of diethylene glycol monobutyl ethers, 5 ~ 8 parts of 1-hydroxy ethylidene-1,1-diphosphonic acids, 2 ~ 4 parts of cerous nitrates, 4 ~ 8 parts of epoxy radicals
Triethoxysilane.
Further, the molybdate is made up of at least one of sodium molybdate, potassium molybdate, calcium molybdate.
Further, the tungstates is made up of at least one of sodium tungstate, cobaltous tungstate, ferrous tungstate.
Further, the silicate is made up of at least one of sodium metasilicate, potassium silicate, magnesium silicate.
Further, the pH value of the inorganic acid passivating solution is 2 ~ 3.
The present invention has the advantages that：
Galvanized sheet top layer has been effectively ensured by the way of molybdate, tungstates and silicate compounding use in passivating solution of the present invention
The generation quality of passivating film, while the use of traditional chromium hydrochlorate passivating solution harmful substance composition is turn avoid, there is good ring
Effect is protected, the auxiliary agent added in passivating solution further promotes the generation of passivating film, and the quickening of passivation process, shortened
Duration is processed, improves manufacture efficiency, wherein the acrylic resin added helps to form ductility, attachment in Several Thiourea Derivatives on Zinc Plate Surface
The more preferable passivating film of property, phthalic anhydride, the triethylene diamine of addition may advantageously facilitate the chelating process occurred during passivation, carry
The efficiency of processing is risen, the 1-hydroxy ethylidene-1,1-diphosphonic acid and epoxy radicals triethoxysilane of addition help to reduce water and be passivated process
In inevitably film foaming and the degree that comes off, peel off, improve the surface quality of passivating film.It is final produced by the present invention blunt
Changing liquid has the characteristics of green, safety non-pollution, and working process quality is good, the characteristics of manufacturing efficiency high, great
Promotional value.
Embodiment
Embodiment 1
A kind of inorganic acid passivating solution for electro-galvanized layer, by the material composition of following parts by weight：
25 parts of molybdates, 15 parts of tungstates, 10 parts of silicate, 6 parts of hydrogen peroxide, 5 parts of auxiliary agents, 800 parts of water；The auxiliary agent is by as follows
The material composition of parts by weight：3 parts of phthalic anhydrides, 4 parts of triethylene diamines, 15 parts of acrylic resins, 3 parts of diethylene glycol mono butyls
Ether, 5 parts of 1-hydroxy ethylidene-1,1-diphosphonic acids, 2 parts of cerous nitrates, 4 parts of epoxy radicals triethoxysilanes.
Further, the molybdate is made up of sodium molybdate, potassium molybdate.
Further, the tungstates is made up of sodium tungstate, cobaltous tungstate, ferrous tungstate.
Further, the silicate is made up of sodium metasilicate, potassium silicate.
Further, the pH value of the inorganic acid passivating solution is 2 ~ 3.
Embodiment 2
A kind of inorganic acid passivating solution for electro-galvanized layer, by the material composition of following parts by weight：
28 parts of molybdates, 17 parts of tungstates, 12 parts of silicate, 10 parts of hydrogen peroxide, 6 parts of auxiliary agents, 900 parts of water；The auxiliary agent is by such as
The material composition of lower parts by weight：4 parts of phthalic anhydrides, 6 parts of triethylene diamines, 17 parts of acrylic resins, 5 parts of diethylene glycol lists
Butyl ether, 7 parts of 1-hydroxy ethylidene-1,1-diphosphonic acids, 3 parts of cerous nitrates, 6 parts of epoxy radicals triethoxysilanes.
Further, the molybdate is made up of sodium molybdate, potassium molybdate, calcium molybdate.
Further, the tungstates in sodium tungstate, cobaltous tungstate, ferrous tungstate by forming.
Further, the silicate is made up of sodium metasilicate, potassium silicate, magnesium silicate.
Further, the pH value of the inorganic acid passivating solution is 2 ~ 3.
Embodiment 3
A kind of inorganic acid passivating solution for electro-galvanized layer, by the material composition of following parts by weight：
30 parts of molybdates, 20 parts of tungstates, 15 parts of silicate, 12 parts of hydrogen peroxide, 8 parts of auxiliary agents, 1000 parts of water；The auxiliary agent is by such as
The material composition of lower parts by weight：5 parts of phthalic anhydrides, 7 parts of triethylene diamines, 18 parts of acrylic resins, 6 parts of diethylene glycol lists
Butyl ether, 8 parts of 1-hydroxy ethylidene-1,1-diphosphonic acids, 4 parts of cerous nitrates, 8 parts of epoxy radicals triethoxysilanes.
Further, the molybdate is sodium molybdate.
Further, the tungstates is ferrous tungstate.
Further, the silicate is potassium silicate.
Further, the pH value of the inorganic acid passivating solution is 2 ~ 3.
Comparative example 1
This comparative example 1 compared with Example 1, does not contain silicate in its composition, method and step all same in addition.
Comparative example 2
This comparative example 2 compared with Example 2, do not contained in its auxiliary component triethylene diamine, 1-hydroxy ethylidene-1,1-diphosphonic acid and
Cerous nitrate, method and step all same in addition.
Comparative example 3
This comparative example 3 compared with Example 3, epoxy radicals triethoxysilane in its auxiliary component by etc. mass parts second
Alkenyl triethoxysilane substitutes, method and step all same in addition.
Control group 1
Existing chromating liquid.
Control group 2
Existing inorganic acid passivating solution.
Following technological processes is used to zinc-plated sheet material：Light extraction-washing-the passivating solution of electrogalvanizing workpiece-in light-emitting solution
Middle immersion-stop in air-is washed-dried or air blow drying-burin-in process-finished product, wherein passivating solution difference used
Using the passivating solution in above-mentioned several embodiments, remaining handling process all same, and quality is carried out to final obtained finished product
Detection, specific correction data are as shown in table 1 below：
Table 1
| The copper sulphate drop blackening time（s） | Simulated seawater soaks the time for hot spot occur（h） | Corroded area after simulated seawater immersion 480h（%） | |
| Embodiment 1 | 33~36 | 150~155 | 13~18 |
| Embodiment 2 | 37~40 | 153~157 | 11~16 |
| Embodiment 3 | 34~36 | 151~157 | 12~19 |
| Comparative example 1 | 20~24 | 110~116 | 58~64 |
| Comparative example 2 | 25~28 | 124~128 | 47~55 |
| Comparative example 3 | 30~33 | 140~145 | 25~30 |
| Control group 1 | 35~38 | 142~146 | 28~33 |
| Control group 2 | 27~30 | 120~125 | 50~56 |
Note：Each composition and content are in simulated seawater described in upper table 1：Sodium chloride 26.7g/L, the g/L of potassium chloride 0.7, chlorination
The g/L of calcium 1.2, the g/L of sodium acid carbonate 0.2, the g/L of magnesium chloride 2.3, the g/L of magnesium sulfate 3.2, surplus are water, and the pH of simulated seawater
It is worth for 6.5 ~ 7.2, temperature is normal temperature.
The more traditional chromating liquid of passivating solution using effect produced by the present invention is taller it can be seen from upper table 1,
And it is safe and harmless, promotional value is good.
Claims (5)
1. a kind of inorganic acid passivating solution for electro-galvanized layer, it is characterised in that by the material composition of following parts by weight：
25 ~ 30 parts of molybdates, 15 ~ 20 parts of tungstates, 10 ~ 15 parts of silicate, 6 ~ 12 parts of hydrogen peroxide, 5 ~ 8 parts of auxiliary agents, 800 ~ 1000
Part water；The auxiliary agent by following parts by weight material composition：3 ~ 5 parts of phthalic anhydrides, 4 ~ 7 parts of triethylene diamines, 15 ~ 18 parts
Acrylic resin, 3 ~ 6 parts of diethylene glycol monobutyl ethers, 5 ~ 8 parts of 1-hydroxy ethylidene-1,1-diphosphonic acids, 2 ~ 4 parts of cerous nitrates, 4 ~ 8 parts of epoxy radicals
Triethoxysilane.
A kind of 2. inorganic acid passivating solution for electro-galvanized layer according to claim 1, it is characterised in that the molybdate
It is made up of at least one of sodium molybdate, potassium molybdate, calcium molybdate.
A kind of 3. inorganic acid passivating solution for electro-galvanized layer according to claim 1, it is characterised in that the tungstates
It is made up of at least one of sodium tungstate, cobaltous tungstate, ferrous tungstate.
A kind of 4. inorganic acid passivating solution for electro-galvanized layer according to claim 1, it is characterised in that the silicate
It is made up of at least one of sodium metasilicate, potassium silicate, magnesium silicate.
A kind of 5. inorganic acid passivating solution for electro-galvanized layer according to claim 1, it is characterised in that the inorganic acid
The pH value of passivating solution is 2 ~ 3.
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| CN201710535549.4A CN107523820A (en) | 2017-07-04 | 2017-07-04 | A kind of inorganic acid passivating solution for electro-galvanized layer |
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| CN201710535549.4A CN107523820A (en) | 2017-07-04 | 2017-07-04 | A kind of inorganic acid passivating solution for electro-galvanized layer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108546941A (en) * | 2018-06-11 | 2018-09-18 | 昆明理工大学 | A kind of environment-friendly type titanium salt color passivation solution |
| CN108950627A (en) * | 2018-07-11 | 2018-12-07 | 深圳市美之高科技股份有限公司 | A kind of chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process method |
| CN110983317A (en) * | 2019-12-17 | 2020-04-10 | 昆明理工大学 | A kind of electro-galvanized silicate molybdate composite color passivation solution and preparation method thereof |
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| CN106637174A (en) * | 2016-09-29 | 2017-05-10 | 浙江五源科技股份有限公司 | Silane self-assembly treating agent for metal coating pretreatment and application of silane self-assembly treating agent |
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| CN101418443A (en) * | 2008-11-21 | 2009-04-29 | 常熟华冶薄板有限公司 | Chromium-free inactivating liquor for continuous galvanizing by hot-dip galvanized steel sheet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108546941A (en) * | 2018-06-11 | 2018-09-18 | 昆明理工大学 | A kind of environment-friendly type titanium salt color passivation solution |
| CN108546941B (en) * | 2018-06-11 | 2020-04-07 | 昆明理工大学 | Environment-friendly titanium salt color passivation solution |
| CN108950627A (en) * | 2018-07-11 | 2018-12-07 | 深圳市美之高科技股份有限公司 | A kind of chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process method |
| CN110983317A (en) * | 2019-12-17 | 2020-04-10 | 昆明理工大学 | A kind of electro-galvanized silicate molybdate composite color passivation solution and preparation method thereof |
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