CN107488858A - A kind of austenitic stainless steel passivating agent for acid-washing and preparation method thereof - Google Patents
A kind of austenitic stainless steel passivating agent for acid-washing and preparation method thereof Download PDFInfo
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- CN107488858A CN107488858A CN201710661113.XA CN201710661113A CN107488858A CN 107488858 A CN107488858 A CN 107488858A CN 201710661113 A CN201710661113 A CN 201710661113A CN 107488858 A CN107488858 A CN 107488858A
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- 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
- C23C22/34—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 fluorides or complex fluorides
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/025—Cleaning or pickling metallic material with solutions or molten salts with acid solutions acidic pickling pastes
Abstract
The invention discloses a kind of austenitic stainless steel passivating agent for acid-washing, including following parts by weight of component：1 ~ 4 part of hydrogen peroxide, 1 ~ 2 part of fluosilicic acid, 0.6 ~ 1.5 part of potassium nitrate, 2 ~ 3 parts of cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, 0.5 ~ 0.8 part of DDAO, 0.2 ~ 0.3 part of polyacrylamide, 0.6 ~ 1.5 part of thiocarbamide, 0.1 ~ 0.5 part of methenamine, 0.1 ~ 0.7 part of octyl epoxy stearate, 5 ~ 12 parts of water.There is the austenitic stainless steel passivating agent for acid-washing good removal to act on to the oxide of stainless steel surfaces, and clearance reaches more than 99%, and the product property is gentle, will not produce secondary destruction to stainless steel surfaces, have commercial application value.
Description
Technical field
The invention belongs to stainless steel manufacturing technology field, and in particular to a kind of austenitic stainless steel passivating agent for acid-washing and its system
Preparation Method.
Background technology
After stainless steel Site Welding, acid wash passivation is carried out to weld seam, removes the dirts such as all kinds of greasy dirts, rust, oxide skin, weldering spot
Dirt, surface becomes uniform silvery white after processing, greatly improves stainless steel corrosion resistance, suitable for various model stainless steels zero
Part, sheet material and its equipment.Traditional acid-washing stainless steel deactivating process for the treatment of is that pickling and passivation are divided into two independent parts.
Descaling bath and deactivation slot are typically provided with, i.e. stainless steel equipment is carried out in deactivation slot again in descaling bath after pickling to remove oxide
Passivation Treatment.Such processing method, the labor intensity of operator is big, the evil of working condition caused by a large amount of effusions of acid mist
Change.Cause environmental pollution serious due to the direct discharge of pickle liquor, labor productivity is low, particularly large scale equipment and existing
The equipment and be welded with dissimilar metal that field is installed（Such as copper, iron）Stainless steel equipment, acid wash passivation processing be almost difficult to.And
Pickling and two procedures of passivation are combined into one by acid wash passivation cream, have reformed traditional acid washing passivation technology.The advantages of method is
Special equipment and place are not needed, it is not necessary to which firing equipment, execute-in-place is flexible, and acid wash passivation is once completed, and independence is strong；
Cream long shelf-life is passivated, each smearing processing is all disposable with new passivation cream, and the passivation of one layer of surface is reacted i.e. after terminating
Stop, being not easy excessive erosion, can also not strengthened being passivated by weak links such as subsequent rinse time restriction, weld seams.Shortcoming is worker
Operating environment is poor, and labor intensity is high, and cost is higher, slightly worse to stainless steel tubing inwall treatment effect, need to combine other methods.
In addition, there is following subject matter in current acid wash passivation cream：1）Temperature applicable range is narrow, in subzero, its
Acid wash passivation ability greatly declines.2）Current acid wash passivation cream product largely uses hydrofluoric acid, sulfuric acid, hydrochloric acid and alkylbenzene
The raw materials such as sodium sulfonate, these raw materials can all cause to endanger containing element, these elements such as very abundant fluorine, sulphur, chlorine, sodium to stainless steel
Evil.Penetrated, under the occasion such as extremely low temperature reversed of stress in illumination in the future, high temperature, high pressure, high flux irradiation, they can cause stainless
Steel part produces pitting, the intercrystalline corrosion of needle-like burn into, scorching corrosion etc..And this kind of hot spot has plenty of the direct of Materials Fracture
Induction source, some are then the catalyst of Materials Fracture.3）Acid wash passivation quality be present not in the acid wash passivation cream of present domestic production
Stable, acid wash passivation color is inconsistent, the deficiency of larger difference in Various Seasonal be present.
430 stainless steels are mainly used in a kind of stainless steel of automotive trim, and its main characteristic is temperature tolerance and anti-corruption
Corrosion can it is poor, therefore it is surface-treated when also to select relatively mild inorganic agent.
The content of the invention
Technical problem：A kind of environmentally friendly, nontoxic austenitic stainless steel passivating agent for acid-washing and preparation method thereof is provided.
Technical scheme：A kind of austenitic stainless steel passivating agent for acid-washing, including following parts by weight of component：1 ~ 4 part of hydrogen peroxide,
1 ~ 2 part of fluosilicic acid, 0.6 ~ 1.5 part of potassium nitrate, 2 ~ 3 parts of cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dodecyl dimethyl oxidation
0.5 ~ 0.8 part of amine, 0.2 ~ 0.3 part of polyacrylamide, 0.6 ~ 1.5 part of thiocarbamide, 0.1 ~ 0.5 part of methenamine, epoxystearic acid are pungent
0.1 ~ 0.7 part of ester, 5 ~ 12 parts of water.
Preferably, including following parts by weight of component：2 parts of hydrogen peroxide, 1.5 parts of fluosilicic acid, 1 part of potassium nitrate, cocounut oil acyl
1.5 parts of amine propyl group hydroxyl sulphonic acid betaine, 0.6 part of DDAO, 0.25 part of polyacrylamide, 1 part of thiocarbamide, crow
0.3 part of Lip river tropine, 0.5 part of octyl epoxy stearate, 10 parts of water.
Preferably, including following parts by weight of component：1 part of hydrogen peroxide, 1 part of fluosilicic acid, 0.6 part of potassium nitrate, cocounut oil acyl
2 parts of amine propyl group hydroxyl sulphonic acid betaine, 0.5 part of DDAO, 0.2 part of polyacrylamide, 0.6 part of thiocarbamide, crow
0.1 part of Lip river tropine, 0.1 part of octyl epoxy stearate, 5 parts of water.
Preferably, including following parts by weight of component：4 parts of hydrogen peroxide, 2 parts of fluosilicic acid, 1.5 parts of potassium nitrate, cocounut oil acyl
3 parts of amine propyl group hydroxyl sulphonic acid betaine, 0.8 part of DDAO, 0.3 part of polyacrylamide, 1.5 parts of thiocarbamide, crow
0.5 part of Lip river tropine, 0.7 part of octyl epoxy stearate, 12 parts of water.
The preparation method of above-mentioned austenitic stainless steel passivating agent for acid-washing, comprises the following steps：
By hydrogen peroxide, fluosilicic acid, potassium nitrate, cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, DDAO, poly-
Acrylamide, thiocarbamide, methenamine, octyl epoxy stearate, water are proportionally added into reactor, are warming up to 40 ~ 50 DEG C, stirring
It is well mixed, both obtained austenitic stainless steel passivating agent for acid-washing.
Cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, DDAO are gentle surfactants, are added
The material can assist to remove the rusty stain of stainless steel surfaces, and polyacrylamide can effectively keep being passivated the steady of cream as flocculant
It is qualitative.
Beneficial effect：
The invention provides a kind of austenitic stainless steel passivating agent for acid-washing, has removal well to the oxide of stainless steel surfaces
Effect, clearance reach more than 99%, and the product property is gentle, will not produce secondary destruction to stainless steel surfaces, have business should
With value.
Embodiment
According to following embodiments, the present invention may be better understood.It is however, as it will be easily appreciated by one skilled in the art that real
Apply the content described by example and be merely to illustrate the present invention, without should be also without limitation on sheet described in detail in claims
Invention.
Embodiment 1：
A kind of austenitic stainless steel passivating agent for acid-washing, including following parts by weight of component：2 parts of hydrogen peroxide, 1.5 parts of fluosilicic acid, nitre
Sour 1 part of potassium, 1.5 parts of cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, 0.6 part of DDAO, polyacrylamide
0.25 part, 1 part of thiocarbamide, 0.3 part of methenamine, 0.5 part of octyl epoxy stearate, 10 parts of water.
By hydrogen peroxide, fluosilicic acid, potassium nitrate, cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dodecyl dimethyl oxidation
Amine, polyacrylamide, thiocarbamide, methenamine, octyl epoxy stearate, water are proportionally added into reactor, are warming up to 40 ~ 50
DEG C, it is uniformly mixed, has both obtained austenitic stainless steel passivating agent for acid-washing.
Embodiment 2：
A kind of austenitic stainless steel passivating agent for acid-washing, including following parts by weight of component：1 part of hydrogen peroxide, 1 part of fluosilicic acid, nitric acid
0.6 part of potassium, 2 parts of cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, 0.5 part of DDAO, polyacrylamide 0.2
Part, 0.6 part of thiocarbamide, 0.1 part of methenamine, 0.1 part of octyl epoxy stearate, 5 parts of water.
By hydrogen peroxide, fluosilicic acid, potassium nitrate, cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dodecyl dimethyl oxidation
Amine, polyacrylamide, thiocarbamide, methenamine, octyl epoxy stearate, water are proportionally added into reactor, are warming up to 40 ~ 50
DEG C, it is uniformly mixed, has both obtained austenitic stainless steel passivating agent for acid-washing.
Embodiment 3：
A kind of austenitic stainless steel passivating agent for acid-washing, including following parts by weight of component：4 parts of hydrogen peroxide, 2 parts of fluosilicic acid, nitric acid
1.5 parts of potassium, 3 parts of cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, 0.8 part of DDAO, polyacrylamide 0.3
Part, 1.5 parts of thiocarbamide, 0.5 part of methenamine, 0.7 part of octyl epoxy stearate, 12 parts of water.
By hydrogen peroxide, fluosilicic acid, potassium nitrate, cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dodecyl dimethyl oxidation
Amine, polyacrylamide, thiocarbamide, methenamine, octyl epoxy stearate, water are proportionally added into reactor, are warming up to 40 ~ 50
DEG C, it is uniformly mixed, has both obtained austenitic stainless steel passivating agent for acid-washing.
Comparative example 1：
Cocamidopropyl propyl amide hydroxyl sulphonic acid betaine is not added in passivation cream, and remaining composition is as embodiment.
Comparative example 2：
DDAO is not added in passivation cream, remaining composition is as embodiment.
Comparative example 3：
Polyacrylamide is not added in passivation cream, remaining composition is as embodiment.
6 pieces of 430 stainless steel plate of size identical is taken, same treatment is carried out to it, then with embodiment 1 ~ 3 and comparative example 1 ~ 3
Passivation cream it is handled, experimental result is as follows：
The experimental result of table 1
| Example | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Oxide removal efficiency | 99% | 99% | 99% | 82% | 83% | 85% |
The performance detection of passivating film is shown in Table 2 ~ 3.
The embodiment passivating film performance detection of table 2
The comparative example passivating film of table 3 detects
Claims (5)
1. a kind of austenitic stainless steel passivating agent for acid-washing, it is characterised in that including following parts by weight of component：1 ~ 4 part of hydrogen peroxide,
1 ~ 2 part of fluosilicic acid, 0.6 ~ 1.5 part of potassium nitrate, 2 ~ 3 parts of cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dodecyl dimethyl oxidation
0.5 ~ 0.8 part of amine, 0.2 ~ 0.3 part of polyacrylamide, 0.6 ~ 1.5 part of thiocarbamide, 0.1 ~ 0.5 part of methenamine, epoxystearic acid are pungent
0.1 ~ 0.7 part of ester, 5 ~ 12 parts of water.
2. austenitic stainless steel passivating agent for acid-washing according to claim 1, it is characterised in that including following parts by weight group
Point：2 parts of hydrogen peroxide, 1.5 parts of fluosilicic acid, 1 part of potassium nitrate, 1.5 parts of cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dodecyl two
0.6 part of methyl oxidation amine, 0.25 part of polyacrylamide, 1 part of thiocarbamide, 0.3 part of methenamine, 0.5 part of octyl epoxy stearate, water
10 parts.
3. austenitic stainless steel passivating agent for acid-washing according to claim 1, it is characterised in that including following parts by weight group
Point：1 part of hydrogen peroxide, 1 part of fluosilicic acid, 0.6 part of potassium nitrate, 2 parts of cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dimethyl
0.5 part of base amine oxide, 0.2 part of polyacrylamide, 0.6 part of thiocarbamide, 0.1 part of methenamine, 0.1 part of octyl epoxy stearate, water 5
Part.
4. austenitic stainless steel passivating agent for acid-washing according to claim 1, it is characterised in that including following parts by weight group
Point：4 parts of hydrogen peroxide, 2 parts of fluosilicic acid, 1.5 parts of potassium nitrate, 3 parts of cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, dimethyl
0.8 part of base amine oxide, 0.3 part of polyacrylamide, 1.5 parts of thiocarbamide, 0.5 part of methenamine, 0.7 part of octyl epoxy stearate, water
12 parts.
5. the preparation method of austenitic stainless steel passivating agent for acid-washing described in claim 1, it is characterised in that comprise the following steps：
By hydrogen peroxide, fluosilicic acid, potassium nitrate, cocamidopropyl propyl amide hydroxyl sulphonic acid betaine, DDAO, poly-
Acrylamide, thiocarbamide, methenamine, octyl epoxy stearate, water are proportionally added into reactor, are warming up to 40 ~ 50 DEG C, stirring
It is well mixed, both obtained austenitic stainless steel passivating agent for acid-washing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710661113.XA CN107488858A (en) | 2017-08-04 | 2017-08-04 | A kind of austenitic stainless steel passivating agent for acid-washing and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710661113.XA CN107488858A (en) | 2017-08-04 | 2017-08-04 | A kind of austenitic stainless steel passivating agent for acid-washing and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225087A (en) * | 2013-04-26 | 2013-07-31 | 河南师范大学 | Stainless steel pickling passivation paste and preparation method thereof |
| CN105331989A (en) * | 2015-11-24 | 2016-02-17 | 苏州盖德精细材料有限公司 | Novel stainless steel pickling-passivating solution and pickling-passivating process thereof |
| CN106917095A (en) * | 2017-03-23 | 2017-07-04 | 合肥协耀玻璃制品有限公司 | A kind of acid-washing stainless steel passivation cream and preparation method thereof |
-
2017
- 2017-08-04 CN CN201710661113.XA patent/CN107488858A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225087A (en) * | 2013-04-26 | 2013-07-31 | 河南师范大学 | Stainless steel pickling passivation paste and preparation method thereof |
| CN105331989A (en) * | 2015-11-24 | 2016-02-17 | 苏州盖德精细材料有限公司 | Novel stainless steel pickling-passivating solution and pickling-passivating process thereof |
| CN106917095A (en) * | 2017-03-23 | 2017-07-04 | 合肥协耀玻璃制品有限公司 | A kind of acid-washing stainless steel passivation cream and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 向定汉等: "《材料科学与工程 课程实验及探索性实验》材料科学与工程 课程实验及探索性实验》", 30 June 2013, 清华大学出版社 * |
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