CN1715448A - Inactivating agent for metal surface - Google Patents
Inactivating agent for metal surface Download PDFInfo
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- CN1715448A CN1715448A CN 200410025619 CN200410025619A CN1715448A CN 1715448 A CN1715448 A CN 1715448A CN 200410025619 CN200410025619 CN 200410025619 CN 200410025619 A CN200410025619 A CN 200410025619A CN 1715448 A CN1715448 A CN 1715448A
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- Prior art keywords
- passivator
- metallic surface
- inactivating agent
- metal surface
- present
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention belongs to the field of chemical technology, and discloses one kind of inactivating agent for metal surface. The inactivating agent for metal surface includes hydrazine, cyclohexylamine, trisodium phosphate, zinc sulfate and water. The inactivating agent for metal surface is suitable for use to the surface of metal after being cleaned and especially after being acid pickled in central air conditioning system and industrial cooling water system as well as boiler, heat supplying apparatus, etc. The present invention also provides the usage of the inactivating agent for metal surface. The inactivating agent of the present invention has high inactivation effect and can form compact and stable inactivation film.
Description
Technical field
The invention belongs to chemical field, relate to a kind of metallic surface and clean the treatment agent that use the back, more specifically, the present invention relates to the passivator that a kind of metallic surface is used.
Background technology
The metallic surface also has residual acid solution after overpickling, its metallic surface then is in very active active state.For this reason, the metallic surface need be neutralized and the water flushing, to remove residual acid wherein.Add the passivation medicament then and carry out Passivation Treatment.The purpose of passivation is to prevent that metal from getting rusty in the surface corrosion of cleaning postactivated, and passivation should be 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 (60 ℃), 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.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of metallic surface passivator, contains hydrazine, hexahydroaniline, tertiary sodium phosphate, zinc sulfate and water, and wherein, each compositions in weight percentage is:
Hydrazine: 15%～25%;
Hexahydroaniline: 20%～25%;
Tertiary sodium phosphate: 5%～10%;
Zinc sulfate: 15%～20%;
Water: 30%～40%.
Further, described passivator cleans the back use in the metallic surface.Further, described passivator uses after overpickling in the metallic surface.
Further, described passivator is at central air conditioner system, industrial cooling circulating water system, and uses after the equipment washing such as boiler, heating.
When the present invention uses, clean the back that finishes at metal and in the short as far as possible time, surface to be cleaned is rinsed with water purification, use 0.5% citric acid rinsing 2 hours again, in this rinsing liquid, add ammoniacal liquor and transfer PH to 8-9, add passivator of the present invention in 1: 10 ratio, discharging after passivation 24-30 hour.
Further, metallic surface of the present invention can be used at normal temperatures with passivator, and is preferred, can use down at 30-40 ℃.
Metallic surface of the present invention sees Table 1 with the main technical details of passivator.
Table 1
| Acid-basicity | Alkalescence |
| Proportion | 1.08 |
| Volatility | Volatilization |
| Firing property | Do not fire |
This passivator is used for stabilization is played in the metallic surface after cleaning, because it has the short performance that generates through the magnetic crystalline film, but the generation of this magnetic film is soft stable.In through the relief liquor after the passivation, contain pollutent hardly.In addition, this passivator is different from general passivator, and fast filming is better as if being heated to 30-40 ℃ of effect at normal temperatures, and general passivator must be heated to 80-90 ℃ of use.
This medicament is applicable to that systems such as central air-conditioning, boiler, heating use after matting.After this medicament Passivation Treatment, the surface, active metal can generate the form compact and stable 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 with passivator, the passivation medicament that passive film is form compact and stable.
Embodiment
A kind of metallic surface of the present invention passivator contains hydrazine, hexahydroaniline, tertiary sodium phosphate, zinc sulfate and water, and wherein, each compositions in weight percentage is:
Hydrazine: 15%～25%;
Hexahydroaniline: 20%～25%;
Tertiary sodium phosphate: 5%～10%;
Zinc sulfate: 15%～20%;
Water: 30%～40%.
Using method of the present invention is as follows:
1. clean the back discharging scavenging solution that finishes, in the short as far as possible time, surface to be cleaned is rinsed with water purification.
2. if flush time grow (more than 6 hours), treat that rinse water are clear after, use 0.5% citric acid rinsing 2 hours again, in this rinsing liquid, add ammoniacal liquor accent PH to 8-9.
3. add WS-140 passivating solution (adding) in 1: 10 ratio.
4. discharging after passivation 24-30 hour.
Claims (4)
1. a metallic surface passivator is characterized in that, contains hydrazine, hexahydroaniline, tertiary sodium phosphate, zinc sulfate and water, and wherein, each compositions in weight percentage is:
Hydrazine: 15%～25%;
Hexahydroaniline: 20%～25%;
Tertiary sodium phosphate: 5%～10%;
Zinc sulfate: 15%～20%;
Water: 30%～40%.
2. metallic surface according to claim 1 passivator is characterized in that, described passivator cleans the back and uses in the metallic surface.
3. metallic surface according to claim 2 passivator is characterized in that described passivator uses after overpickling in the metallic surface.
4. metallic surface according to claim 1 and 2 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025619 CN1715448A (en) | 2004-06-30 | 2004-06-30 | Inactivating agent for metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025619 CN1715448A (en) | 2004-06-30 | 2004-06-30 | Inactivating agent for metal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1715448A true CN1715448A (en) | 2006-01-04 |
Family
ID=35821599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410025619 Pending CN1715448A (en) | 2004-06-30 | 2004-06-30 | Inactivating agent for metal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1715448A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590028A (en) * | 2012-08-14 | 2014-02-19 | 苏州一方金属表面处理科技有限公司 | Cold-rolled sheet passivator |
| 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 |
| CN105884001A (en) * | 2016-05-31 | 2016-08-24 | 无锡锡能锅炉有限公司 | Recycled water treatment agent for gas-fired boiler |
-
2004
- 2004-06-30 CN CN 200410025619 patent/CN1715448A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590028A (en) * | 2012-08-14 | 2014-02-19 | 苏州一方金属表面处理科技有限公司 | Cold-rolled sheet passivator |
| 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 |
| CN105884001A (en) * | 2016-05-31 | 2016-08-24 | 无锡锡能锅炉有限公司 | Recycled water treatment agent for gas-fired boiler |
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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 |