CN107268000A - A kind of acid-washing stainless steel passivation cream and preparation method thereof and application method - Google Patents
A kind of acid-washing stainless steel passivation cream and preparation method thereof and application method Download PDFInfo
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- CN107268000A CN107268000A CN201710555286.3A CN201710555286A CN107268000A CN 107268000 A CN107268000 A CN 107268000A CN 201710555286 A CN201710555286 A CN 201710555286A CN 107268000 A CN107268000 A CN 107268000A
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- acid
- stainless steel
- cream
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- washing stainless
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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
- C23G1/085—Iron or steel solutions containing HNO3
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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
- C23C22/34—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
- C23C22/36—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 containing also phosphates
- C23C22/368—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 containing also phosphates containing magnesium cations
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of acid-washing stainless steel passivation cream and preparation method thereof and application method；Wherein acid-washing stainless steel passivation cream includes following components according to mass percent：Fluosilicic acid 8 ~ 12%, nitric acid 10 ~ 15%, polyethyleneimine 10 ~ 14%, magnesium nitrate 12 ~ 15%, bentonite 12 ~ 15%, sodium polyphosphate 3 ~ 5%, water：Surplus, acid-washing stainless steel passivation cream of the invention does not discharge hydrofluoric acid during making, small to environmental hazard, it is skin friendly, the health of workmen is ensure that, and effectively removes various weld seams, oxide skin and the rusty stain of stainless steel surfaces, is a kind of efficient product of environmental protection.
Description
Technical field
The invention belongs to acid wash passivation technical field, more particularly to a kind of acid-washing stainless steel passivation cream and preparation method thereof and
Application method.
Background technology
Stainless steel can cause surface defect, Corrosion Potential in process, black oxidation skin and other metallization occur
Grease when compound, yellow weld seam and cold-drawn etc., in order to improve the outward appearance and corrosion resistance of stainless steel, the stainless steel after processing is necessary
Carry out acid wash passivation processing.The primary raw material of production acid-washing stainless steel passivation cream is hydrofluoric acid and nitric acid at present（Such as patent
CN86101522）, this kind of product can discharge hydrofluoric acid in use, and easily burn human body skin and retina, are unfavorable for
Workmen's is healthy, particularly in the construction environment of relative closure（Such as reactor, rectifying column）To workmen
It is very harmful.
The content of the invention
The present invention provides a kind of acid-washing stainless steel passivation cream and preparation method thereof and application method, acid-washing stainless steel passivation
Cream safety and environmental protection and efficient stable, in operation fluoride-free hydrogen release are put, and are reduced the harm to human body, are solved stainless steel
During acid wash passivation the problem of long-standing hydrogen fluoride pollution problem and secondary pollution.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of acid-washing stainless steel is passivated cream, it is characterised in that include following components according to mass percent：Fluosilicic acid 8 ~ 12%, nitre
Acid 10 ~ 15%, polyethyleneimine 10 ~ 14%, magnesium nitrate 12 ~ 15%, bentonite 12 ~ 15%, sodium polyphosphate 3 ~ 5%, water：Surplus.
It is preferred that, the acid-washing stainless steel is passivated cream, in addition to crosslinking agent, and the crosslinking agent accounts for the 3 ~ 5% of gross weight.
It is preferred that, the crosslinking agent is epoxychloropropane.
A kind of acid-washing stainless steel is passivated cream, includes following components according to mass percent：It is fluosilicic acid 10%, nitric acid 13%, poly-
Aziridine 12%, magnesium nitrate 13%, bentonite 13%, sodium polyphosphate 4%, water 35%.
A kind of acid-washing stainless steel is passivated the preparation method of cream, comprises the following steps：Match and claim according to following mass percent
Take raw material：Fluosilicic acid 8 ~ 12%, nitric acid 10 ~ 15%, polyethyleneimine 10 ~ 14%, magnesium nitrate 12 ~ 15%, bentonite 12 ~ 15%, poly
Sodium phosphate 3 ~ 5%, water：Surplus, in addition to bentonite, other raw materials weighed are added in ptfe autoclave, stirring
After 5min, add load weighted bentonite and account for the crosslinking agent of gross weight 3 ~ 5%, and it is stainless to continue the obtained g., jelly-like of stirring 50min
Steel acid wash passivation cream.
It is preferred that, the crosslinking agent is epoxychloropropane.
It is preferred that, reactor is ptfe autoclave.
A kind of acid-washing stainless steel is passivated the application method of cream, comprises the following steps：
Step 1: first that the oily waste treatment on stainless steel work-piece surface is clean；
Step 2: being dipped with brush, acid-washing stainless steel is passivated the surface that cream is applied to position to be cleaned on stainless steel work-piece, made
The thickness of acid-washing stainless steel passivation cream is more than 2mm, keeps 15-30min；
Step 3: cleaning stainless steel work-piece surface with sodium carbonate or calcium hydroxide weak solution；
Step 4: rinsing stainless steel work-piece with clear water, the pH value to cleaning fluid is untill neutrality.
Compared with prior art, the present invention has advantages below：
The acid-washing stainless steel passivation cream of the present invention does not discharge hydrofluoric acid during making, small to environmental hazard, skin friendly, it is ensured that
The health of workmen, and various weld seams, oxide skin and the rusty stain of stainless steel surfaces are effectively removed, it is a kind of environmental protection
Efficient product.
Embodiment
The present invention is further described with reference to embodiment.
Embodiment 1
A kind of acid-washing stainless steel is passivated cream, including fluosilicic acid 10kg, the kg of nitric acid 14, the kg of polyethyleneimine 14, magnesium nitrate 14kg,
Bentonite 14kg, sodium polyphosphate 3kg, water 31kg；Also include 3kg crosslinking agent epoxychloropropane.
A kind of acid-washing stainless steel is passivated the production method of cream, comprises the following steps：
Other raw materials weighed are added in ptfe autoclave in addition to bentonite, after stirring 5min, title are continuously added into
The crosslinking agent of measured bentonite and 3kg, continues to stir that g., jelly-like acid-washing stainless steel passivation cream is obtained after 50min.Will be made
Standby acid wash passivation cream tinning.
Fluosilicic acid do not discharge hydrogen fluoride in use as corrosive agent, it is to avoid workmen is caused harm, and
The problem of effectively can solving to fail in product placement process.Bentonite needs to increase swelling as inorganic filler in summer
The quality of soil, to increase the viscosity of product, needs to reduce bentonitic quality in the winter time, to reduce the viscosity of product.Add many
Polyphosphate sodium is in order to reduce the surface tension of creamy product and workplace, to increase reaction speed.
A kind of acid-washing stainless steel is passivated the application method of cream, comprises the following steps：
Step 1: first that the oily waste treatment on stainless steel work-piece surface is clean；
Step 2: dipping the surface that acid-washing stainless steel passivation cream is applied to position to be cleaned on stainless steel work-piece with brush, make not
The thickness of rust steel acid wash passivation cream is more than 2mm, keeps 15min；
Step 3: cleaning stainless steel work-piece surface with sodium carbonate or calcium hydroxide weak solution；
Step 4: rinsing stainless steel work-piece with clear water, the pH value to cleaning fluid is untill neutrality.
Embodiment 2
A kind of acid-washing stainless steel is passivated cream, including fluosilicic acid 12kg, nitric acid 12kg, the kg of polyethyleneimine 11, magnesium nitrate 15kg,
Bentonite 15kg, sodium polyphosphate 5kg, water 30kg；Also include 3kg crosslinking agent epoxychloropropane.
A kind of acid-washing stainless steel is passivated the production method of cream, comprises the following steps：
Other raw materials weighed are added in ptfe autoclave in addition to bentonite, after stirring 5min, title are continuously added into
The crosslinking agent of measured bentonite and 3kg, continues to stir that g., jelly-like acid-washing stainless steel passivation cream is obtained after 50min.Will be made
Standby acid wash passivation cream tinning.
Fluosilicic acid do not discharge hydrogen fluoride in use as corrosive agent, it is to avoid workmen is caused harm, and
The problem of effectively can solving to fail in product placement process.Bentonite needs to increase swelling as inorganic filler in summer
The quality of soil, to increase the viscosity of product, needs to reduce bentonitic quality in the winter time, to reduce the viscosity of product.Add many
Polyphosphate sodium is in order to reduce the surface tension of creamy product and workplace, to increase reaction speed.
A kind of acid-washing stainless steel is passivated the application method of cream, comprises the following steps：
Step 1: first that the oily waste treatment on stainless steel work-piece surface is clean；
Step 2: dipping the surface that acid-washing stainless steel passivation cream is applied to position to be cleaned on stainless steel work-piece with brush, make not
The thickness of rust steel acid wash passivation cream is more than 2mm, keeps 20min；
Step 3: cleaning stainless steel work-piece surface with sodium carbonate or calcium hydroxide weak solution；
Step 4: rinsing stainless steel work-piece with clear water, the pH value to cleaning fluid is untill neutrality.
Embodiment 3
A kind of acid-washing stainless steel is passivated cream, including fluosilicic acid 8kg, the kg of nitric acid 15, the kg of polyethyleneimine 10, magnesium nitrate 15kg,
Bentonite 12kg, sodium polyphosphate 4kg, water 36kg；Also include 3kg crosslinking agent epoxychloropropane.
A kind of acid-washing stainless steel is passivated the production method of cream, comprises the following steps：
Other raw materials weighed are added in ptfe autoclave in addition to bentonite, after stirring 5min, title are continuously added into
The crosslinking agent of measured bentonite and 3kg, continues to stir that g., jelly-like acid-washing stainless steel passivation cream is obtained after 50min.Will be made
Standby acid wash passivation cream tinning.
Fluosilicic acid do not discharge hydrogen fluoride in use as corrosive agent, it is to avoid workmen is caused harm, and
The problem of effectively can solving to fail in product placement process.Bentonite needs to increase swelling as inorganic filler in summer
The quality of soil, to increase the viscosity of product, needs to reduce bentonitic quality in the winter time, to reduce the viscosity of product.Add many
Polyphosphate sodium is in order to reduce the surface tension of creamy product and workplace, to increase reaction speed.
A kind of acid-washing stainless steel is passivated the application method of cream, comprises the following steps：
Step 1: first that the oily waste treatment on stainless steel work-piece surface is clean；
Step 2: dipping the surface that acid-washing stainless steel passivation cream is applied to position to be cleaned on stainless steel work-piece with brush, make not
The thickness of rust steel acid wash passivation cream is 2.5mm, keeps 30min；
Step 3: cleaning stainless steel work-piece surface with sodium carbonate or calcium hydroxide weak solution；
Step 4: rinsing stainless steel work-piece with clear water, the pH value to cleaning fluid is untill neutrality.
Embodiment 4
A kind of acid-washing stainless steel is passivated cream, including fluosilicic acid 12kg, the kg of nitric acid 10, the kg of polyethyleneimine 14, magnesium nitrate 12kg,
Bentonite 15kg, sodium polyphosphate 3kg, water 34kg；Also include 4kg crosslinking agent epoxychloropropane.
A kind of acid-washing stainless steel is passivated the production method of cream, comprises the following steps：
Other raw materials weighed are added in ptfe autoclave in addition to bentonite, after stirring 5min, title are continuously added into
The crosslinking agent of measured bentonite and 4kg, continues to stir that g., jelly-like acid-washing stainless steel passivation cream is obtained after 50min.Will be made
Standby acid wash passivation cream tinning.
Fluosilicic acid do not discharge hydrogen fluoride in use as corrosive agent, it is to avoid workmen is caused harm, and
The problem of effectively can solving to fail in product placement process.Bentonite needs to increase swelling as inorganic filler in summer
The quality of soil, to increase the viscosity of product, needs to reduce bentonitic quality in the winter time, to reduce the viscosity of product.Add many
Polyphosphate sodium is in order to reduce the surface tension of creamy product and workplace, to increase reaction speed.
A kind of acid-washing stainless steel is passivated the application method of cream, comprises the following steps：
Step 1: first that the oily waste treatment on stainless steel work-piece surface is clean；
Step 2: dipping the surface that acid-washing stainless steel passivation cream is applied to position to be cleaned on stainless steel work-piece with brush, make not
The thickness of rust steel acid wash passivation cream is 2.3mm, keeps 15-20min；
Step 3: cleaning stainless steel work-piece surface with sodium carbonate or calcium hydroxide weak solution；
Step 4: rinsing stainless steel work-piece with clear water, the pH value to cleaning fluid is untill neutrality.
Embodiment 5
A kind of acid-washing stainless steel is passivated cream, including fluosilicic acid 10kg, the kg of nitric acid 13, polyethyleneimine 12kg, magnesium nitrate 13kg,
Bentonite 13kg, sodium polyphosphate 4kg, water 35kg；Also include 5kg crosslinking agent epoxychloropropane.
A kind of acid-washing stainless steel is passivated the production method of cream, comprises the following steps：
Other raw materials weighed are added in ptfe autoclave in addition to bentonite, after stirring 5min, title are continuously added into
The crosslinking agent of measured bentonite and 3kg, continues to stir that g., jelly-like acid-washing stainless steel passivation cream is obtained after 50min.Will be made
Standby acid wash passivation cream tinning.
Fluosilicic acid do not discharge hydrogen fluoride in use as corrosive agent, it is to avoid workmen is caused harm, and
The problem of effectively can solving to fail in product placement process.Bentonite needs to increase swelling as inorganic filler in summer
The quality of soil, to increase the viscosity of product, needs to reduce bentonitic quality in the winter time, to reduce the viscosity of product.Add many
Polyphosphate sodium is in order to reduce the surface tension of creamy product and workplace, to increase reaction speed.
A kind of acid-washing stainless steel is passivated the application method of cream, comprises the following steps：
Step 1: first that the oily waste treatment on stainless steel work-piece surface is clean；
Step 2: dipping the surface that acid-washing stainless steel passivation cream is applied to position to be cleaned on stainless steel work-piece with brush, make not
The thickness of rust steel acid wash passivation cream is more than 2mm, keeps 20-30min；
Step 3: cleaning stainless steel work-piece surface with sodium carbonate or calcium hydroxide weak solution；
Step 4: rinsing stainless steel work-piece with clear water, the pH value to cleaning fluid is untill neutrality.
Performance rating after the acid-washing stainless steel passivation cream use prepared with when preparation method provided using the present invention
With inspection：
1st, surface should be in uniform silvery white after acid wash passivation, without obvious evidence of corrosion, and weld metal zone oxide skin is removed thoroughly,
Without the spot that irregular colour is even.
2nd, with the 3ml nitric acid+1g potassium ferricyanide+50ml clear water wiring solution-formings, 100ml then is diluted to clear water, is configured to
Testing reagent, the filter paper of dipped reagent is attached on workpiece, Bluepoint is occurred without in 30s.
3rd, 8g copper sulphate is dissolved in 500ml distilled water, adds 2-3ml sulfuric acid, then drip the solution of configuration in passivation
Workpiece surface, keeps wetting, is separated out in 6min without copper.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of acid-washing stainless steel is passivated cream, it is characterised in that include following components according to mass percent：Fluosilicic acid 8 ~ 12%,
Nitric acid 10 ~ 15%, polyethyleneimine 10 ~ 14%, magnesium nitrate 12 ~ 15%, bentonite 12 ~ 15%, sodium polyphosphate 3 ~ 5%, water：Surplus.
2. acid-washing stainless steel as claimed in claim 1 is passivated cream, it is characterised in that：Also include crosslinking agent, the crosslinking agent is accounted for
The 3 ~ 5% of gross weight.
3. acid-washing stainless steel as claimed in claim 2 is passivated cream, it is characterised in that：The crosslinking agent is epoxychloropropane.
4. acid-washing stainless steel as claimed in claim 1 is passivated cream, it is characterised in that：Include according to mass percent with the following group
Point：Fluosilicic acid 10%, nitric acid 13%, polyethyleneimine 12%, magnesium nitrate 13%, bentonite 13%, sodium polyphosphate 4%, water 35%.
5. a kind of acid-washing stainless steel as described in claim 1-4 is any is passivated the preparation method of cream, it is characterised in that including with
Lower step：Raw material is weighed according to following mass percent proportioning：Fluosilicic acid 8 ~ 12%, nitric acid 10 ~ 15%, polyethyleneimine 10 ~
14%th, magnesium nitrate 12 ~ 15%, bentonite 12 ~ 15%, sodium polyphosphate 3 ~ 5%, water：Surplus, it is other by what is weighed in addition to bentonite
Raw material is added in reactor, after stirring 5min, is added load weighted bentonite and is accounted for the crosslinking agent of gross weight 3 ~ 5%, and continues to stir
Mix 50min and g., jelly-like acid-washing stainless steel passivation cream is made.
6. acid-washing stainless steel as claimed in claim 5 is passivated the preparation method of cream, it is characterised in that：The crosslinking agent is epoxy
Chloropropane.
7. acid-washing stainless steel as claimed in claim 5 is passivated the preparation method of cream, it is characterised in that：Reactor is polytetrafluoroethyl-ne
Alkene reaction kettle.
8. a kind of acid-washing stainless steel as described in claim 1-4 is any is passivated the application method of cream, it is characterised in that including with
Lower step：
Step 1: first that the oily waste treatment on stainless steel work-piece surface is clean；
Step 2: acid-washing stainless steel is passivated into the surface that cream is applied to position to be cleaned on stainless steel work-piece, make acid-washing stainless steel
The thickness for being passivated cream is more than 2mm, keeps 15-30min；
Step 3: cleaning stainless steel work-piece surface with sodium carbonate or calcium hydroxide weak solution；
Step 4: rinsing stainless steel work-piece with clear water, the pH value to cleaning fluid is untill neutrality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710555286.3A CN107268000A (en) | 2017-07-10 | 2017-07-10 | A kind of acid-washing stainless steel passivation cream and preparation method thereof and application method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710555286.3A CN107268000A (en) | 2017-07-10 | 2017-07-10 | A kind of acid-washing stainless steel passivation cream and preparation method thereof and application method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107815692A (en) * | 2017-10-23 | 2018-03-20 | 上海强翠实业有限公司 | Stainless steel surfaces acid wash passivation cream and acid washing passivation technology |
| CN115125529A (en) * | 2022-06-07 | 2022-09-30 | 中国航发成都发动机有限公司 | Method for local passivation of stainless steel components of aircraft engine |
Citations (2)
| 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 |
| CN103820774A (en) * | 2014-02-26 | 2014-05-28 | 苏州禾川化学技术服务有限公司 | Stainless steel pickling passivation cream with high transparency and high viscosity and preparation method thereof |
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2017
- 2017-07-10 CN CN201710555286.3A patent/CN107268000A/en active Pending
Patent Citations (2)
| 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 |
| CN103820774A (en) * | 2014-02-26 | 2014-05-28 | 苏州禾川化学技术服务有限公司 | Stainless steel pickling passivation cream with high transparency and high viscosity and preparation method thereof |
Non-Patent Citations (2)
| Title |
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| 朱洪法: "《精细化工常用原材料手册》", 31 December 2003, 金盾出版社 * |
| 陈洪轩等: "《药剂辅料实用技术》", 31 August 2001, 河南大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107815692A (en) * | 2017-10-23 | 2018-03-20 | 上海强翠实业有限公司 | Stainless steel surfaces acid wash passivation cream and acid washing passivation technology |
| CN115125529A (en) * | 2022-06-07 | 2022-09-30 | 中国航发成都发动机有限公司 | Method for local passivation of stainless steel components of aircraft engine |
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