CN1754986A - Metal surface passivant - Google Patents
Metal surface passivant Download PDFInfo
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- CN1754986A CN1754986A CN 200410066830 CN200410066830A CN1754986A CN 1754986 A CN1754986 A CN 1754986A CN 200410066830 CN200410066830 CN 200410066830 CN 200410066830 A CN200410066830 A CN 200410066830A CN 1754986 A CN1754986 A CN 1754986A
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- Prior art keywords
- passivator
- metallic surface
- present
- surface according
- metal surface
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention pertains to the field of chemical industry, wherein a metal surface deactivation agent is disclosed, which comprises cyclohexylamine, zinc sulfate, trisodium phosphate and water. The deactivation agent can be used for metal surfaces after acid pickling against rusting and corrosion.
Description
Technical field
The invention belongs to the chemical industry field, about a kind of metal conditioner, further, the passivator that the present invention uses about a kind of metallic surface.
Background technology
Purifying agent generally has the ability that forms coating or film in the metallic surface.The metallic surface need neutralize and the water flushing, to remove residual acid wherein after overpickling.Then, need to add the passivation medicament and carry out Passivation Treatment, prevent that metal from getting rusty in the surface corrosion of cleaning postactivated, passivation is generally carried out after cleaning (comprising the flushing of neutralization and water).
Phosphoric acid salt commonly used can generate phosphate coating as passivator at iron surface such as sodium phosphate in the common Passivation Treatment of iron, and this component prediction is a tertiary iron phosphate.Recently, consider that the passivator beyond the phosphoric acid salt has begun to adopt from the viewpoint of wastewater treatment.Nitrite treatments can be carried out in a short period of time and under lower temperature, and the generation of this film it is reported it is because ferric oxide (α-Fe
2O
3) crystallization thickness approach, but under the exsiccant condition, have satisfactory stability.But also equally there is the exhaust emission problem of environment that exceeds standard in Sodium Nitrite with phosphoric acid salt.
Passivator provided by the invention has solved the pollution problem of above-mentioned existence, and can use at normal temperatures, is a kind of stable, easy to use high-quality passivator.
Summary of the invention
The passivator that provides a kind of metallic surface to use is provided technical problem to be solved by this invention, and according to weight percent, this passivator comprises following prescription:
Hexahydroaniline: 25～32%;
Zinc sulfate: 20～25%;
Tertiary sodium phosphate: 10～15%;
Surplus is a water.
Further, metallic surface of the present invention can be used for the multiple recycle system with passivator, such as, it can be at central air conditioner system, industrial cooling circulating water system, and uses after the surface cleaning of equipment such as boiler, heating, and wide spectrum is effective.
And metallic surface of the present invention can be used at normal temperatures with passivator.Preferably, the only temperature range of passivator of the present invention is at 30-40 ℃.When room temperature is low, can carry out suitable heating and make between temperature arrives 30-40 ℃, effect is better.Compare with use temperature 80-90 ℃ of general passivator, it is very convenient that passivator of the present invention uses, and fast filming does not need to expend the too much energy at normal temperatures.
And, metallic surface of the present invention with passivator in use, usually according to the material of handles equipment and the institute's pickling agent that uses one-tenth definite ratio of diluting of assigning to.General, according to 1: 8-1: 15 ratio is diluted, and preferably Dilution ratio is 1: 10-1: 12, in embodiments of the present invention, the ratio that adopted 1: 12 is diluted.
This medicament is specially adapted to systems such as central air-conditioning, boiler, heating and uses after matting.After this medicament Passivation Treatment, the surface, active metal can generate the form compact and stable soft protective membrane of one deck, thereby has stoped the erosion of the corrosion factors such as oxygen in the empty G﹠W effectively.
Metallic surface of the present invention is a kind of good passivation effect, easy to use, with low cost, passivation medicament that passive film is stable with passivator.
Embodiment
One. the metallic surface of the present invention a kind of preferable optimal way of passivator:
At first allocate the passivator formula that is fit to, the prescription that present embodiment is selected according to weight percent is: hexahydroaniline: 30%; Zinc sulfate: 24%; Tertiary sodium phosphate: 13%; Water 33% mixes at normal temperatures, fully stirs, and forms the metal surface passivant of concentrated type, when needs use, carries out a certain proportion of dilution as required.
Two. the metallic surface of the present invention using method of passivator:
1. acidity is carried out in the metallic surface of the industrial colling recycle system and clean, clean the back discharging scavenging solution that finishes, clean surface is rinsed with water purification.
2. the passivator that adds above-mentioned screening formulation in 1: 12 ratio continually in the recycle system circulates, passivation.
3. behind circulation, the passivation 20-30 hour passivator is given off.
After treatment, the metallic surface has formed fine and close passive film, is in metastable state, and difficult generation is got rusty, is difficult for being become the branch corrosion by pungency.
Claims (5)
1. the passivator that the metallic surface is used is characterized in that, comprises following prescription according to weight percent:
Hexahydroaniline: 25～32%;
Zinc sulfate: 20～25%;
Tertiary sodium phosphate: 10～15%;
Surplus is a water.
2. metallic surface according to claim 1 passivator is characterized in that, described passivator is at central air conditioner system, industrial cooling circulating water system, and uses after the equipment washing such as boiler, heating.
3. metallic surface according to claim 1 passivator is characterized in that described passivator uses at normal temperatures.
4. metallic surface according to claim 1 passivator is characterized in that, described passivator uses down at 30-40 ℃.
5. metallic surface according to claim 1 passivator is characterized in that, in use, according to 1: 8-1: 15 ratio is diluted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066830 CN1754986A (en) | 2004-09-29 | 2004-09-29 | Metal surface passivant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066830 CN1754986A (en) | 2004-09-29 | 2004-09-29 | Metal surface passivant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1754986A true CN1754986A (en) | 2006-04-05 |
Family
ID=36688528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410066830 Pending CN1754986A (en) | 2004-09-29 | 2004-09-29 | Metal surface passivant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1754986A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104357819A (en) * | 2014-11-13 | 2015-02-18 | 无锡伊佩克科技有限公司 | Metal passivator and preparation method thereof |
| CN106835142A (en) * | 2017-01-09 | 2017-06-13 | 苏州圣天迈电子科技有限公司 | Environmental protection stripping nickel passivator and its compound method and application method |
-
2004
- 2004-09-29 CN CN 200410066830 patent/CN1754986A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104357819A (en) * | 2014-11-13 | 2015-02-18 | 无锡伊佩克科技有限公司 | Metal passivator and preparation method thereof |
| CN106835142A (en) * | 2017-01-09 | 2017-06-13 | 苏州圣天迈电子科技有限公司 | Environmental protection stripping nickel passivator and its compound method and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |