CN101191209A - Low-chromium deactivation liquid for zinc plating piece - Google Patents
Low-chromium deactivation liquid for zinc plating piece Download PDFInfo
- Publication number
- CN101191209A CN101191209A CN 200610129539 CN200610129539A CN101191209A CN 101191209 A CN101191209 A CN 101191209A CN 200610129539 CN200610129539 CN 200610129539 CN 200610129539 A CN200610129539 A CN 200610129539A CN 101191209 A CN101191209 A CN 101191209A
- Authority
- CN
- China
- Prior art keywords
- grams per
- per liter
- low
- chromium
- per liters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Landscapes
- Chemical Treatment Of Metals (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The invention relates to a low chromium passivating liquid for galvanized parts. Concentration of compositions of the invention is that: CrO3: 13 grams per liter; CaSO4: 10 grams per liter; NaHCO2: 5 grams per liter; K3 [Fe(CN) 6]: 0.5 grams per liter; Na2SiO3: 10 grams per liter; silane coupling agent: 0.5 milliliter per liter; polyvinyl alcohol: 0.5 milliliter per liter. The residual is water, and passivating time of the invention is 15 to 30 seconds and PH value of the invention is 1.5. The invention has the advantages of automatic adjustment of concentration of the passivating liquid, simple and stable technique, low cost and low pollution, and the galvanized parts processed by utilizing the invention have the advantages of high intensity, corrosion resistance, thermal shock resistance, and having passive films with good appearance.
Description
Technical field
The present invention relates to a kind of low-chromium deactivation liquid for zinc plating piece.
Background technology
At present, conventional low chromium passivating technology, passivating solution composition instability often changes in process of production, adopts conventional chemical analysis method, and analysis speed does not catch up with big rhythm of production, causes passivation quality instability.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, a kind of low-chromium deactivation liquid for zinc plating piece is provided.
Technical scheme of the present invention is: a kind of low-chromium deactivation liquid for zinc plating piece is characterized in that: comprise solubility chromic salts oxidation filming agent component 13 grams per liters, calcium sulfate activator component 5 grams per liters, sodium formiate PH buffer components 5 grams per liters, Tripotassium iron hexacyanide Zn
+ 2Poiser component 0.5-1 grams per liter, HF secondary film formers component 0.5-3ml/l, all the other are water, passivating solution PH=1.3-1.7 when pH value is undesirable, adds HNO in right amount
3Or NaOH adjustment pH value, make it reach required value.
The present invention has the following advantages: regulate automatically that passivating solution concentration, technology are simple, stable, cost is low, pollution is little, and with the galvanized workpiece of its processing, intensity height, anti-corrosion, heat shock resistance, the passive film that outward appearance is good.
Embodiment
Embodiment: a kind of low-chromium deactivation liquid for zinc plating piece, CrO
3: 13 grams per liters, CaSO
4: 10 grams per liters, NaHCO
2: 5 grams per liters, K
3[Fe (CN)
6]: 0.5 grams per liter, Na
2SiO
3: 10 grams per liters, silane coupling agent: the 0.5ml/ liter, polyvinyl alcohol: the 0.5ml/ liter, all the other water, passivation 15-30 second, pH value 1.5 during preparation, is dissolved in polyvinyl alcohol in the 70-90 ℃ of tap water, under agitation drips Na after the cooling
2SiO
3,, under agitation add CrO with small amount of ethanol dissolved silane coupler solution
3The aqueous solution, add sodium formiate and all the other compositions again, add water to working volume at last, and use HNO
3Or NaOH solution is transferred about PH to 1.5.
Claims (1)
1. a low-chromium deactivation liquid for zinc plating piece is characterized in that: CrO
3: 13 grams per liters, CaSO
4: 10 grams per liters, NaHCO
2: 5 grams per liters, K
3[Fe (CN)
6]: 0.5 grams per liter, Na
2SiO
3: 10 grams per liters, silane coupling agent: the 0.5ml/ liter, polyvinyl alcohol: the 0.5ml/ liter, all the other water, passivation 15-30 second, pH value 1.5 during preparation, is dissolved in polyvinyl alcohol in the 70-90 ℃ of tap water, under agitation drips Na after the cooling
2SiO
3,, under agitation add CrO with small amount of ethanol dissolved silane coupler solution
3The aqueous solution, add sodium formiate and all the other compositions again, add water to working volume at last, and use HNO
3Or NaOH solution is transferred about PH to 1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610129539 CN101191209A (en) | 2006-11-23 | 2006-11-23 | Low-chromium deactivation liquid for zinc plating piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610129539 CN101191209A (en) | 2006-11-23 | 2006-11-23 | Low-chromium deactivation liquid for zinc plating piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101191209A true CN101191209A (en) | 2008-06-04 |
Family
ID=39486406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610129539 Withdrawn CN101191209A (en) | 2006-11-23 | 2006-11-23 | Low-chromium deactivation liquid for zinc plating piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101191209A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505028A (en) * | 2018-04-18 | 2018-09-07 | 扬州新棱机械制造有限公司 | Titanium alloy sunk head rivet process of surface treatment |
| CN109382287A (en) * | 2018-10-31 | 2019-02-26 | 安徽芜湖海螺建筑安装工程有限责任公司 | High stability anchoring piece and preparation method thereof |
-
2006
- 2006-11-23 CN CN 200610129539 patent/CN101191209A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505028A (en) * | 2018-04-18 | 2018-09-07 | 扬州新棱机械制造有限公司 | Titanium alloy sunk head rivet process of surface treatment |
| CN109382287A (en) * | 2018-10-31 | 2019-02-26 | 安徽芜湖海螺建筑安装工程有限责任公司 | High stability anchoring piece and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |