CN102230171A - Phosphating solution of iron and steel pipe piece before painting - Google Patents
Phosphating solution of iron and steel pipe piece before painting Download PDFInfo
- Publication number
- CN102230171A CN102230171A CN2011101600470A CN201110160047A CN102230171A CN 102230171 A CN102230171 A CN 102230171A CN 2011101600470 A CN2011101600470 A CN 2011101600470A CN 201110160047 A CN201110160047 A CN 201110160047A CN 102230171 A CN102230171 A CN 102230171A
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- CN
- China
- Prior art keywords
- steel pipe
- iron
- pipe piece
- phosphatization
- before painting
- 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
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention relates to the technical field of low-temperature phosphating processes of iron and steel pieces, in particular discloses a phosphating solution of an iron and steel pipe piece before painting. The phosphating solution of the iron and steel pipe piece before painting is characterized in that the free acidity is 1.5-2.0 DEG T, the total acidity is 20-24 DEG T and the acidity ratio is 10-16 DEG T. According to the phosphating solution of the iron and steel pipe piece before painting, disclosed by the invention, the defect of no film formation of a workpiece, coarse and porous film formation or blushing and dust absorption in the traditional normal low-temperature iron and steel pipe piece phosphating process is overcome.
Description
Technical field
The present invention relates to the low temperature phosphor Technology field of steel part.
Background technology
Phosphatization is the process that a kind of chemistry and electrochemical reaction form the phosphate chemical conversion film, and formed phosphate conversion film is referred to as phosphatize phosphate coat.The purpose of phosphatization mainly is: provide protection to matrix metal, prevent that to a certain extent metal is corroded; The preceding bottoming that is used to paint improves the sticking power and the anti-corrosion capability of paint film layer; In the metal cold machining process, play the lubricated use of antifriction.Common phosphatization can be divided into normal temperature, low temperature, middle temperature, high temperature four classes by treatment temp at present.Normal temperature phosphating is exactly the phosphatization of not heating.30～45 ℃ of the general treatment temps of low temperature phosphor.General 60～70 ℃ of middle temperature phosphating.High temperature phosphorization is generally greater than 80 ℃.Can be divided into steel part, aluminum component, zinc spare and mixer element phosphatization etc. by material.
In the phosphatization operation and since each phosphatization liquid manufacturer with just use producer based on different performance requriementss, the phosphatization liquid that relates to different ingredients is used in phosphating process.Also only have only several big main types but the scale commercialization is used, as light railway system, zinc system, manganese system, zinc calcium system, the promotor of being adopted substantially all is molybdate, nitrate, nitrite, oxymuriate, organic nitre nitro-compound etc.
In the existing normal temperature low temperature phosphor technology, the free acidity value of phosphatization liquid, total acidity, acid than and promoter concentration all the phosphorization filming quality is produced material impact.Though have numerous manufacturers, research institution these to be done many research, released many products,, the phosphatization mass defect problem that still a large amount of appearance bring because of the parameter proportioning of phosphatization liquid in the real production practice.Needing further, research improves.
Summary of the invention
Technical problem to be solved by this invention provides phosphatization liquid before a kind of lacquer of steel pipe fittings, overcomes the not defective of film forming or the film forming rough porous or the dust of turning white of the workpiece that occurs in the existing steel pipe fittings normal temperature low temperature phosphor technology.
For solving the problems of the technologies described above, phosphatization liquid before the lacquer of a kind of steel pipe fittings of the present invention is characterized in that in the described phosphatization liquid, free acidity is 1.5-2.0 ° of T, and total acidity is 20-24 ° of T, and acid is than being 10-16 ° of T.
Further improved, the quality percentage composition of promotor is 0.5%-2.0% in the described phosphatization liquid.
Preferably, described free acidity is 1.8 ° of T, and total acidity is 22 ° of T, and acid is than being 13 ° of T, and the quality percentage composition of promotor is 1.2%.
The present invention can shorten phosphating time, improves phosphatization efficient, guarantees the phosphatization quality.Prolongation has reduced the waste of resource to the life-span of phosphatization liquid, has saved cost.
Embodiment
During certain ship was made, the duration was tight, and a large amount of ship steel iron pipes need timely phosphatization, adopted normal temperature low-temperature zinc-based phosphatization technology to be: electrochemical deoiling, and--hot water wash----------phosphatization is painted in cold wash in pickling in cold wash by hot water wash--drying--.Because the parameter of phosphatization liquid can not adapt to the phosphatization requirement of large quantities of pipe fittings, it is not up to standard large quantities of pipe phosphatizations to occur, has caused the serious of pipe to overstock.
Adopt the preceding phosphatization liquid of steel pipe fittings lacquer of invention, free acidity is 1.5-2.0 ° of T, and total acidity is 20-24 ° of T, and acid is than being 10-16 ° of T, and the quality percentage composition of promotor is 0.5%-2.0% in the phosphatization liquid.This phosphatization liquid helps quickening phosphating reaction, makes the rete crystallization careful.
Wherein, when free acidity is 1.8 ° of T, total acidity is 24 ° of T, and acid is than being 13 ° of T, and the quality percentage composition of promotor is 1.2% o'clock, and the phosphorization membrane crystallization is the most careful, and effect is best.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (3)
1. phosphatization liquid before the lacquer of a steel pipe fittings is characterized in that in the described phosphatization liquid, free acidity is 1.5-2.0 ° of T, and total acidity is 20-24 ° of T, and acid is than being 10-16 ° of T.
2. phosphatization liquid before the lacquer of steel pipe fittings according to claim 1 is characterized in that the quality percentage composition of promotor is 0.5%-2.0% in the described phosphatization liquid.
3. phosphatization liquid before the lacquer of steel pipe fittings according to claim 2 is characterized in that described free acidity is 1.8 ° of T, and total acidity is 22 ° of T, and acid is than being 13 ° of T, and the quality percentage composition of promotor is 1.2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101600470A CN102230171A (en) | 2011-06-15 | 2011-06-15 | Phosphating solution of iron and steel pipe piece before painting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101600470A CN102230171A (en) | 2011-06-15 | 2011-06-15 | Phosphating solution of iron and steel pipe piece before painting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102230171A true CN102230171A (en) | 2011-11-02 |
Family
ID=44842771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101600470A Pending CN102230171A (en) | 2011-06-15 | 2011-06-15 | Phosphating solution of iron and steel pipe piece before painting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102230171A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454996A (en) * | 2014-11-05 | 2015-03-25 | 芜湖金龙模具锻造有限责任公司 | Anti-corrosion treatment method for sliding bearing shaft sleeve |
-
2011
- 2011-06-15 CN CN2011101600470A patent/CN102230171A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 《材料科学与工程》 20020331 陈洁等 新型磷化液的研制 第18、75-76页 第20卷, 第1期 * |
| 《电镀与环保》 20090331 陈同云 CT-1复合促进剂对常温铁系磷化液性能的影响 第28-30页 第29卷, 第2期 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454996A (en) * | 2014-11-05 | 2015-03-25 | 芜湖金龙模具锻造有限责任公司 | Anti-corrosion treatment method for sliding bearing shaft sleeve |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111102 |