CN108842144A - The method of automobile exhaust cylinder surface blackening processing - Google Patents
The method of automobile exhaust cylinder surface blackening processing Download PDFInfo
- Publication number
- CN108842144A CN108842144A CN201810990516.3A CN201810990516A CN108842144A CN 108842144 A CN108842144 A CN 108842144A CN 201810990516 A CN201810990516 A CN 201810990516A CN 108842144 A CN108842144 A CN 108842144A
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- CN
- China
- Prior art keywords
- automobile exhaust
- exhaust cylinder
- blackening
- cylinder surface
- processing
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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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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
- C23C22/08—Orthophosphates
-
- 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
- C23C22/78—Pretreatment of the material to be coated
-
- 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
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
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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)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention provides a kind of method of automobile exhaust cylinder surface blackening processing, and the method for the present invention includes following steps：（1）Automobile exhaust cylinder surface is subjected to de- ester processing；（2）Painting oil processing is carried out to automobile exhaust cylinder surface；（3）Match blackening solution, blackening process is carried out to the automobile exhaust cylinder after oiling, the blackening solution includes copper sulphate, selenous acid, phosphoric acid, organic acid, lauryl sodium sulfate, stabilizer, the concentration of the blackening solution is copper sulphate 8g/L, selenous acid 9g/L, phosphatase 11 2g/L, organic acid 3g/L, lauryl sodium sulfate 13g/L, stabilizer 0.1g/L, the temperature of the blackening process is 135-142 DEG C, and the processing time is 35-55 minutes；（4）Automobile exhaust cylinder after blackening process is washed, then naturally dry.The present invention can effectively avoid the corrosion of automobile exhaust cylinder, extend the service life of automobile exhaust cylinder.
Description
Technical field：
The present invention relates to a kind of methods of automobile exhaust cylinder surface blackening processing, belong to field of metal surface treatment technology.
Background technique：
Surface treatment is that one layer of table different from the machinery of matrix, physical and chemical properties is artificially formed on substrate material surface
The process of layer.The purpose of surface treatment is the corrosion resistance for meeting product, wearability, decoration or other features requirements.
For metal casting, our more commonly used surface treatment methods are mechanical grindings, chemical treatment, and Surface heat-treatent sprays table
Face, surface treatment be exactly workpiece surface is cleaned, is cleaned, deburring, degreasing, descale etc..
Blackening process is to heat steel in air or directly in the leaching dense oxidizing solution of what, generate its surface very thin
The material protection technology of oxidation film.Solution composition, reaction temperature and time when nigrescence is depending on the ingredient of steel substrate.Hair
The ingredient of black film is magnetic iron oxide, and with a thickness of 0.5~1.5 micron, color is related with material composition and process conditions, there is ash
Black, pitch black, brilliant blue etc..Individual black film corrosion resistance is poor.
Automobile exhaust cylinder is since burnt gas is converted into water and nitrogen dioxide by ternary catalyzing unit, and water cannot be complete
Portion excludes to be left in exhaust pipe, and the time, which has been grown, to corrode；In daily life, it is vented water inlet tube or the dampness time is long
Also can cause to corrode.
Summary of the invention：
The purpose of the present invention is providing a kind of method of automobile exhaust cylinder surface blackening processing in view of the above problems, pass through
After blackening process, the corrosion of automobile exhaust cylinder can be effectively avoided, extends the service life of automobile exhaust cylinder.
Above-mentioned purpose is realized by following technical scheme：
The method of automobile exhaust cylinder surface blackening processing, this method comprises the following steps：
（1）Automobile exhaust cylinder surface is subjected to de- ester processing；
（2）Painting oil processing is carried out to automobile exhaust cylinder surface；
（3）Blackening solution is matched, blackening process is carried out to the automobile exhaust cylinder after oiling, the blackening solution includes sulfuric acid
Copper, selenous acid, phosphoric acid, organic acid, lauryl sodium sulfate, stabilizer, the concentration of the blackening solution are copper sulphate 8g/L, Asia
Selenic acid 9g/L, phosphatase 11 2g/L, organic acid 3g/L, lauryl sodium sulfate 13g/L, stabilizer 0.1g/L, the blackening process
Temperature is 135-142 DEG C, and the processing time is 35-55 minutes；
（4）Automobile exhaust cylinder after blackening process is washed, then naturally dry.
The method of the automobile exhaust cylinder surface blackening processing, step（1）Described in ungrease treatment specific method
Be use mass percentage concentration for 8% sodium carbonate, 1% sodium hydroxide, 5% sodium phosphate, 3% sodium metasilicate mixed solution,
65 DEG C are heated to, is impregnated 45 minutes.
The method of the automobile exhaust cylinder surface blackening processing, step（2）Described in painting oil processing be using apply castor
Sesame oil processing.
The method of the automobile exhaust cylinder surface blackening processing, step（3）Described in organic acid use acetic acid.
The method of the automobile exhaust cylinder surface blackening processing, step（2）Described in stabilizer use ammonium hydroxide.
Beneficial effect：
The present invention can effectively avoid the corrosion of automobile exhaust cylinder after blackening process, and extend automobile exhaust cylinder uses the longevity
Life.
Specific embodiment：
Embodiment 1：
The method of automobile exhaust cylinder surface blackening processing, this method comprises the following steps：
（1）Automobile exhaust cylinder surface is subjected to de- ester processing；
（2）Painting oil processing is carried out to automobile exhaust cylinder surface；
（3）Blackening solution is matched, blackening process is carried out to the automobile exhaust cylinder after oiling, the blackening solution includes sulfuric acid
Copper, selenous acid, phosphoric acid, organic acid, lauryl sodium sulfate, stabilizer, the concentration of the blackening solution are copper sulphate 8g/L, Asia
Selenic acid 9g/L, phosphatase 11 2g/L, organic acid 3g/L, lauryl sodium sulfate 13g/L, stabilizer 0.1g/L, the blackening process
Temperature is 135 DEG C, and the processing time is 35-55 minutes；
（4）Automobile exhaust cylinder after blackening process is washed, then naturally dry.
The method of the automobile exhaust cylinder surface blackening processing, step（1）Described in ungrease treatment specific method
Be use mass percentage concentration for 8% sodium carbonate, 1% sodium hydroxide, 5% sodium phosphate, 3% sodium metasilicate mixed solution,
65 DEG C are heated to, is impregnated 45 minutes.
The method of the automobile exhaust cylinder surface blackening processing, step（2）Described in painting oil processing be using apply castor
Sesame oil processing.
The method of the automobile exhaust cylinder surface blackening processing, step（3）Described in organic acid use acetic acid.
The method of the automobile exhaust cylinder surface blackening processing, step（2）Described in stabilizer use ammonium hydroxide.
Embodiment 2：
The present embodiment difference from example 1 is that, the temperature of the blackening process of the present embodiment is 142 DEG C.
Embodiment 3：
The present embodiment difference from example 1 is that, the temperature of the blackening process of the present embodiment is 138 DEG C.
The above is only highly preferred embodiment of the present invention, the method for the present invention includes but be not limited to the above embodiments, the present invention
Unaccomplished matter, belong to the common knowledge of those skilled in the art.
Claims (5)
1. a kind of method of automobile exhaust cylinder surface blackening processing, it is characterized in that：This method comprises the following steps：
（1）Automobile exhaust cylinder surface is subjected to de- ester processing；
（2）Painting oil processing is carried out to automobile exhaust cylinder surface；
（3）Blackening solution is matched, blackening process is carried out to the automobile exhaust cylinder after oiling, the blackening solution includes sulfuric acid
Copper, selenous acid, phosphoric acid, organic acid, lauryl sodium sulfate, stabilizer, the concentration of the blackening solution are copper sulphate 8g/L, Asia
Selenic acid 9g/L, phosphatase 11 2g/L, organic acid 3g/L, lauryl sodium sulfate 13g/L, stabilizer 0.1g/L, the blackening process
Temperature is 135-142 DEG C, and the processing time is 35-55 minutes；
（4）Automobile exhaust cylinder after blackening process is washed, then naturally dry.
2. the method for automobile exhaust cylinder surface blackening processing according to claim 1, it is characterized in that：Step（1）Described in
Ungrease treatment specific method be use mass percentage concentration for 8% sodium carbonate, 1% sodium hydroxide, 5% sodium phosphate,
The mixed solution of 3% sodium metasilicate is heated to 65 DEG C, impregnates 45 minutes.
3. the method for automobile exhaust cylinder surface blackening processing according to claim 1, it is characterized in that：Step（2）Described in
Painting oil processing be using apply castor-oil plant oil processing.
4. the method for automobile exhaust cylinder surface blackening processing according to claim 1, it is characterized in that：Step（3）Described in
Organic acid use acetic acid.
5. the method for automobile exhaust cylinder surface blackening processing according to claim 1, it is characterized in that：Step（2）Described in
Stabilizer use ammonium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810990516.3A CN108842144A (en) | 2018-08-28 | 2018-08-28 | The method of automobile exhaust cylinder surface blackening processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810990516.3A CN108842144A (en) | 2018-08-28 | 2018-08-28 | The method of automobile exhaust cylinder surface blackening processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108842144A true CN108842144A (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810990516.3A Withdrawn CN108842144A (en) | 2018-08-28 | 2018-08-28 | The method of automobile exhaust cylinder surface blackening processing |
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| CN (1) | CN108842144A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115613020A (en) * | 2022-09-22 | 2023-01-17 | 上海应用技术大学 | Metal blackening treatment method |
-
2018
- 2018-08-28 CN CN201810990516.3A patent/CN108842144A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115613020A (en) * | 2022-09-22 | 2023-01-17 | 上海应用技术大学 | Metal blackening treatment method |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181120 |
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| WW01 | Invention patent application withdrawn after publication |