CN103255402B - Non-chrome white passivator - Google Patents
Non-chrome white passivator Download PDFInfo
- Publication number
- CN103255402B CN103255402B CN201310180473.XA CN201310180473A CN103255402B CN 103255402 B CN103255402 B CN 103255402B CN 201310180473 A CN201310180473 A CN 201310180473A CN 103255402 B CN103255402 B CN 103255402B
- Authority
- CN
- China
- Prior art keywords
- passivator
- chrome
- chrome white
- white passivator
- cobalt nitrate
- 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.)
- Expired - Fee Related
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- Chemical Treatment Of Metals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a non-chrome white passivator, which is formed by uniformly dissolving and mixing the substances including sodium tungstate, sodium citrate, cobalt nitrate and the like according to a certain proportion. The non-chrome white passivator can be used for remarkably improving corrosion resistance and decorative performance of a coating and capable of achieving bright white color.
Description
Technical field
The present invention relates to a kind of Non-chrome white passivator, particularly relate to a kind of composition of Non-chrome white passivator, the effect of each composition and compound method.
Background technology
Zinc-plated is one of anticorrosion of iron and steel means extensively adopted both at home and abroad at present, be widely used in the industries such as aviation, electric power, traffic, building, machinery, but zinc coating is especially easily corroded, so must carry out Passivation Treatment, to improve the corrosion resisting property of zinc coating in wet environment in atmosphere.Metal current passivation technology is sexavalence chromic salts and chromic salt passivation mainly, technique is simple, cost is low, solidity to corrosion is good, but the sexavalent chrome contained in passivating solution and trivalent chromium carcinogenic and toxic, the aerosol produced in Passivation Treatment process and produce in waste water have serious harm to organism and environment.So be badly in need of exploitation hypotoxicity or avirulent chromate replacements reduces the harm of sexavalent chrome to human body and environment.
Tungstenic waste water belongs to heavy metal wastewater thereby, seriously polluted, but exchange resin method can be utilized to come effectively to process, and not only increases product efficiency like this, also reaches the requirement of environmental protection and economy.
Summary of the invention
The present invention, in order to improve zinc coating passivation film asepsis environment-protecting, makes in passivating solution not containing Cr simultaneously
6+, Cr
3+and invented a kind of Non-chrome white passivator.
The present invention adopts the article composition Non-chrome white passivator such as sodium wolframate, Trisodium Citrate, Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES.
Concrete preparation method of the present invention comprises the step of following order:
A. beaker and glass stick pure water are rinsed and wash;
B. the certain mass Trisodium Citrate weighed up is poured in the beaker had in a small amount of pure water, stir with glass stick and make it fully dissolve;
C. load weighted sodium wolframate is slowly joined in b liquid, stir and make it fully dissolve;
D. load weighted Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES is joined in c liquid, stir;
E. add pure water to volume required, adjust pH in 1 ~ 2 scope with nitric acid.
A kind of Non-chrome white passivator of gained of the present invention, for clarifying peach liquid.
Description of test
The present invention, by after zinc-plated experiment, implements Passivation Treatment in the blue white passivating liquor of Chrome-free, after the process of different time and temperature, observes the color and luster of coating, and carries out neutral salt spray test and measure its corrosion resisting property.
Embodiment
The concrete preparation process of the present embodiment is as follows:
A. general Low-Cyanide Zinc Plating is prepared, and adjusted to ph, electroplate.
B. take out sample after certain hour, in the nitric acid of 3%, carry out Passivation Treatment after bright dipping, passivation time is 10 ~ 20s.
C. observe the color and luster transforming rete, and carry out neutral salt spray test.
A kind of Non-chrome white passivator technological specification is:
Sodium wolframate, Trisodium Citrate, Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES
Note: when there being stirring, passivation time can shorten and passive film is more even.
Claims (1)
1. be applied to the Non-chrome white passivator in zinc layers, it is characterized in that the raw material of passivator is composed as follows: containing sodium wolframate 30 ~ 50g/L, Trisodium Citrate 15 ~ 25g/L, Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES 15 ~ 20g/L, all the other are pure water; When Non-chrome white passivator uses, pH value maintains in 1 ~ 2 scope, and temperature is room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310180473.XA CN103255402B (en) | 2013-05-16 | 2013-05-16 | Non-chrome white passivator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310180473.XA CN103255402B (en) | 2013-05-16 | 2013-05-16 | Non-chrome white passivator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103255402A CN103255402A (en) | 2013-08-21 |
| CN103255402B true CN103255402B (en) | 2015-02-25 |
Family
ID=48959600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310180473.XA Expired - Fee Related CN103255402B (en) | 2013-05-16 | 2013-05-16 | Non-chrome white passivator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103255402B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100455083B1 (en) * | 2000-12-22 | 2004-11-08 | 주식회사 포스코 | Zn-Co-W alloy electroplated steel sheet with excellent corrosion resistance and welding property and electrolyte therefor |
| CN100591802C (en) * | 2008-03-27 | 2010-02-24 | 武汉科技大学 | Chromium-free passivation liquid for galvanized sheet and manufacture method thereof |
| CN100585002C (en) * | 2008-11-07 | 2010-01-27 | 沈阳帕卡濑精有限总公司 | Nickel-free ion phosphating agent for steel plate processing |
| CN101538709A (en) * | 2009-04-09 | 2009-09-23 | 上海交通大学 | Trivalent chromium blue and white passivation solution repair additive and application thereof |
-
2013
- 2013-05-16 CN CN201310180473.XA patent/CN103255402B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103255402A (en) | 2013-08-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20200516 |
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| CF01 | Termination of patent right due to non-payment of annual fee |