CN1715446A - Precoating agent for metal surface - Google Patents
Precoating agent for metal surface Download PDFInfo
- Publication number
- CN1715446A CN1715446A CN 200410025621 CN200410025621A CN1715446A CN 1715446 A CN1715446 A CN 1715446A CN 200410025621 CN200410025621 CN 200410025621 CN 200410025621 A CN200410025621 A CN 200410025621A CN 1715446 A CN1715446 A CN 1715446A
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- CN
- China
- Prior art keywords
- metal surface
- metallic surface
- prefilming agent
- coating agent
- present
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- 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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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention belongs to the field of chemical technology, and discloses one kind of pre-coating agent for metal surface. The pre-coating agent for metal surface includes sodium hexametaphosphate, zinc sulfate and water. The pre-coating agent for metal surface is suitable for use in heat exchanger of medium carbon steel, stainless steel, etc. of central air conditioning system and industrial cooling water system and oil pipeline. The present invention also provides the usage of the pre-coating agent for metal surface. The present invention is one kind of concentrated pre-coating agent and has short pre-coating time, high effect, and easy storage.
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 prefilming agent that a kind of metallic surface is used.
Background technology
For central air conditioner system or large scale industry cooling water system, the water yield is bigger, and this type systematic is if carry out Passivation Treatment after cleaning, and the consumption of passivator is bigger, and expense is higher, and the discharging of simultaneously a large amount of passivation waste liquids also brings pollution to environment.Moreover this type systematic is often dosing processing when day-to-day operation, and corrosion speed is slower.Therefore this type systematic cleans the back if do not seal up for safekeeping, can directly enter day-to-day operation after pre-film is handled without passivation.
The purpose of pre-film is to allow especially be in after the pickling after cleaning on the fresh metal surface under the active state, or its protective membrane once suffered on the metallic surface of great damage, generates the complete and anti-corrosion protective membrane of one deck before normal operation input in advance.
Facts have proved, if the medicament with high density carries out pre-film earlier, medicament with lower concentration carries out day-to-day operation (normal operation) then, than directly much economical with the medicament operation of high density without pre-film, goes the control corrosion much effective than direct with the operation of lower concentration prefilming agent again.Therefore the present invention is directed to a kind of prefilming agent of concentrated type.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of metallic surface prefilming agent, contains Sodium hexametaphosphate 99, zinc sulfate and water, and each compositions in weight percentage is as follows:
Sodium hexametaphosphate 99: 60%～80%;
Zinc sulfate: 15%～20%;
Surplus is a water
Further, prefilming agent of the present invention cleans the back use in the metallic surface.Further, described prefilming agent uses after overpickling in the metallic surface.Prefilming agent of the present invention is applicable to interchanger such as central air conditioner system, cooling water system medium carbon steel, stainless steel, the pipeline in the pipe laying.
When the present invention uses, system cleaning through peracidity and passivation after carry out rinsing, add the metallic surface prefilming agent afterwards, circulated at least 2 hours, assurance total system concentration is even, every day is open cycle pump 2 hours at least, a lasting about week.
Use the main technical details of the product of prescription acquisition of the present invention to be:
(A) outward appearance: white solid powder.
(B) total inorganic phosphorus (in PO3-4) content: 〉=50.0%
(C) zinc (in Zn2+) content: 〉=8.0%
The mixture that product of the present invention is made up of the poly-phosphate and the zinc salt of high density, its aqueous solution can make steel surface form one deck corrosion protection film at short notice, because the easy moisture absorption caking of this product influences dissolution rate, therefore need be stored in the dry place of room ventilated.
The present invention is a kind of prefilming agent of high density, and preliminary filming time is short, effective.And of the present invention being convenient to preserved, and saved the expense of the prefilming agent that uses in the day-to-day operation process in the future, and control corrosion simultaneously is more effective.
Embodiment
A kind of metallic surface of the present invention prefilming agent is characterized in that, contain Sodium hexametaphosphate 99, zinc sulfate and water, each compositions in weight percentage is as follows:
Sodium hexametaphosphate 99: 60%～80%;
Zinc sulfate: 15%～20%;
Surplus is a water
Using method of the present invention is as follows:
1, after the recycle system being carried out acidity cleaning and passivation, emissions passivation liquid, the circulation rinsing is limpid to water quality.
2, add metallic surface of the present invention prefilming agent, circulated 2 hours, guarantee that total system concentration is even.
3, every day open cycle pump 2 hours at least, change the day-to-day operation state after the week over to.
Claims (4)
1. a metallic surface prefilming agent is characterized in that, contains Sodium hexametaphosphate 99, zinc sulfate and water, and each compositions in weight percentage is as follows:
Sodium hexametaphosphate 99: 60%～80%;
Zinc sulfate: 15%～20%;
Surplus is a water
2. metallic surface according to claim 1 prefilming agent is characterized in that, described prefilming agent cleans the back and uses in the metallic surface.
3. metallic surface according to claim 2 prefilming agent is characterized in that described prefilming agent uses after overpickling in the metallic surface.
4. metallic surface according to claim 1 and 2 prefilming agent is characterized in that, described prefilming agent is applicable to interchanger such as central air conditioner system, cooling water system medium carbon steel, stainless steel, the pipeline in the pipe laying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025621 CN1715446A (en) | 2004-06-30 | 2004-06-30 | Precoating agent for metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025621 CN1715446A (en) | 2004-06-30 | 2004-06-30 | Precoating agent for metal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1715446A true CN1715446A (en) | 2006-01-04 |
Family
ID=35821597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410025621 Pending CN1715446A (en) | 2004-06-30 | 2004-06-30 | Precoating agent for metal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1715446A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111133123A (en) * | 2017-10-12 | 2020-05-08 | 安赛乐米塔尔公司 | Method for treating metal plate and metal plate treated by the method |
| US11319631B2 (en) | 2017-10-12 | 2022-05-03 | Arcelormittal | Metal sheet treatment method and metal sheet treated with this method |
-
2004
- 2004-06-30 CN CN 200410025621 patent/CN1715446A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111133123A (en) * | 2017-10-12 | 2020-05-08 | 安赛乐米塔尔公司 | Method for treating metal plate and metal plate treated by the method |
| CN111133123B (en) * | 2017-10-12 | 2021-12-03 | 安赛乐米塔尔公司 | Method for treating metal plate and metal plate treated by the method |
| US11319633B2 (en) | 2017-10-12 | 2022-05-03 | Arcelormittal | Metal sheet treatment method and metal sheet treated with this method |
| US11319631B2 (en) | 2017-10-12 | 2022-05-03 | Arcelormittal | Metal sheet treatment method and metal sheet treated with this 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 |