CN106222679A - A kind of magnesium alloy die casting surface treatment method - Google Patents
A kind of magnesium alloy die casting surface treatment method Download PDFInfo
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- CN106222679A CN106222679A CN201610737348.8A CN201610737348A CN106222679A CN 106222679 A CN106222679 A CN 106222679A CN 201610737348 A CN201610737348 A CN 201610737348A CN 106222679 A CN106222679 A CN 106222679A
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- magnesium alloy
- die casting
- alloy die
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- treatment method
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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
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/22—Light metals
-
- 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
- C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/57—Treatment of magnesium or alloys based thereon
-
- 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
- C23G1/12—Light metals
-
- 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
- C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
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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)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention provides a kind of magnesium alloy die casting surface treatment method, comprise the following steps: a, offer magnesium alloy die casting；B, ungrease treatment；C, for the first time surface adjust；D, for the first time neutralisation treatment；E, for the second time surface adjust；F, for the second time neutralisation treatment；G, chemical membrane process；H, sealing treatment；I, this magnesium alloy die casting is dried.The present invention has carried out two subsurface adjustment process, twice neutralisation treatment and sealing treatment to magnesium alloy die casting, surface adjusts in solution containing organic Mixed adjustment agent, the oxide on magnesium alloy die casting surface, mould release, dirt, cold working magnesium chips and other residues is made thoroughly to remove, and have chemical deposition conversion film in magnesium alloy die casting surface configuration, and compensate for the scarce eye of chemical deposition conversion film, improve magnesium alloy die casting anticorrosive property and aesthetic property.
Description
Technical field
The present invention relates to metal surface treating method, particularly relate to a kind of magnesium alloy die casting surface treatment method.
Background technology
The light material of magnesium alloy is widely used in automobile because of proportion is low, intensity is high and applicable recovery uses and electronics sets
Standby.But, owing to magnesium alloy chemical character is more active, decay resistance is poor, therefore magnesium alloy die casting before use
As need its surface formed chemical deposition conversion film.
The most general employing chemical synthesizing method forms chemical composition coating at Mg alloy surface, to strengthen its corrosion resistance, simultaneously
Also the adhesive force of itself and coating layer can be strengthened.But the chemical synthesis technology of routine, it is impossible to when repairing and make up magnesium alloy die casting molding
Structural limitation and the mould process of itself lack limit, and the intractable remover remaining in surface can not be removed, and then directly
Affect outward appearance and the performance of magnesium alloy die casting, and cost is high..
Summary of the invention
The technical problem to be solved in the present invention is according to above-mentioned the deficiencies in the prior art, it is provided that a kind of magnesium alloy die casting table
Face processing method, structural limitation and the mould process of itself during in order to repair and to make up magnesium alloy die casting molding lack limit, go
Except the intractable remover remaining in surface.
Technical scheme is as follows:
A kind of magnesium alloy die casting surface treatment method, comprises the following steps:
A, offer magnesium alloy die casting；
B, use degreasant solution carry out ungrease treatment to this magnesium alloy die casting, and then ultrasonic pure water cleans；
C, use surface adjust solution and this magnesium alloy die casting carry out surface adjustment for the first time, and then ultrasonic pure water cleans；
D, use alkali liquor carry out neutralisation treatment for the first time to this magnesium alloy die casting, and then ultrasonic pure water cleans；
E, use surface adjust solution and this magnesium alloy die casting carry out the adjustment of second time surface, and then ultrasonic pure water cleans；
F, use alkali liquor carry out second time neutralisation treatment to this magnesium alloy die casting, and then ultrasonic pure water cleans；
G, use chemical solution carry out chemical membrane process to this magnesium alloy die casting, and then ultrasonic pure water cleans；
H, use hole sealing agent carry out sealing treatment to this magnesium alloy die casting, and then ultrasonic pure water cleans；
I, this magnesium alloy die casting is dried.
Further, in step b, temperature is 50-80 degree Celsius, and the time is 4-6 minute, the PH of degreasant solution is 11 ±
0.2。
Further, in step c, temperature is 40-70 degree Celsius, and the time is the 40-60 second, and it is 5-that surface adjusts the PH of solution
10。
Further, in step d or f, temperature is 60-90 degree Celsius, and the time is 4-6 minute, and the PH of alkali liquor is 11-15.
Further, in step e, temperature is 40-70 degree Celsius, and the time is the 5-15 second, and it is 5-that surface adjusts the PH of solution
10。
Further, in step g, temperature is 20-35 degree Celsius, and the time is the 20-35 second, and the PH of chemical solution is 1.8-
2.5。
Further, in step h, temperature is 40-60 degree Celsius, and the time is 1-3 minute, and the PH of hole sealing agent is 6-8.
Further, in step i, temperature is 100-140 degree Celsius, and the time is 15-35 minute.
Further, in step c or e, surface adjusts the organic Mixed adjustment being added with volume fraction 1-10% in solution
Agent, described organic Mixed adjustment agent includes gluconic acid, tartaric acid, three glycolics, lactic acid and surfactant.
Further, in step b, c, d, e, f, g and h, ultrasonic pure water wash number is 2 times, and temperature is room temperature, often
The secondary time is the 15-25 second, and pure water PH is 6-8.
Compared with prior art, there is advantages that magnesium alloy die casting has been carried out twice by the present invention
Surface adjustment process, twice neutralisation treatment and sealing treatment, surface adjusts in solution containing organic Mixed adjustment agent, makes magnesium close
The gold oxide on die casting surface, mould release, dirt, cold working magnesium chips and other residues are thoroughly removed, and in magnesium alloy pressure
Cast(ing) surface is provided with chemical deposition conversion film, and compensate for the scarce eye of chemical deposition conversion film, improves magnesium alloy pressure-casting
Part anticorrosive property and aesthetic property.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, the present invention will be made the most detailed below
Describe.
The embodiment that the present invention provides, a kind of magnesium alloy die casting surface treatment method, comprise the following steps:
A, offer magnesium alloy die casting；
B, use degreasant solution carry out ungrease treatment to this magnesium alloy die casting, and then ultrasonic pure water cleans.Wherein, temperature is
50-80 degree Celsius, the time is 4-6 minute, and the PH of degreasant solution is 11 ± 0.2.The present embodiment is preferred, and temperature is 65 degrees Celsius,
Time is 5 minutes, and the PH of degreasant solution is 11.Wherein, ungrease treatment can remove the greasy dirt on magnesium alloy die casting surface.
C, use surface adjust solution and this magnesium alloy die casting carry out surface adjustment for the first time, and then ultrasonic pure water is clear
Wash.Wherein, temperature is 40-70 degree Celsius, and the time is the 40-60 second, and it is 5-10 that surface adjusts the PH of solution.The present embodiment is preferred,
Temperature is 55 degrees Celsius, and the time is 50 seconds, and it is 6 that surface adjusts the PH of solution.Wherein, surface adjustment for the first time can go demagging to close
The releasing agent on gold die casting surface and oxidant.
D, use alkali liquor carry out neutralisation treatment for the first time to this magnesium alloy die casting, and then ultrasonic pure water cleans.
Wherein, temperature is 60-90 degree Celsius, and the time is 4-6 minute, and the PH of alkali liquor is 11-15.The present embodiment is preferred, and temperature is 75 to take the photograph
Family name's degree, the time is 5 minutes, and the PH of alkali liquor is 13.Wherein, neutralisation treatment can remove the black of magnesium alloy die casting surface for the first time
The residual film of color.
E, use surface adjust solution and this magnesium alloy die casting carry out the adjustment of second time surface, and then ultrasonic pure water is clear
Wash.Wherein, temperature is 40-70 degree Celsius, and the time is the 5-15 second, and it is 5-10 that surface adjusts the PH of solution.The present embodiment is preferred, temperature
Degree is 55 degrees Celsius, and the time is 10 seconds, and it is 6 that surface adjusts the PH of solution.Wherein, surface adjusts and can remove again for the second time
The releasing agent on magnesium alloy die casting surface and oxidant.
F, use alkali liquor carry out second time neutralisation treatment to this magnesium alloy die casting, and then ultrasonic pure water cleans.Wherein,
Temperature is 60-90 degree Celsius, and the time is 4-6 minute, and the PH of alkali liquor is 11-15.The present embodiment is preferred, and temperature is 75 degrees Celsius,
Time is 5 minutes, and the PH of alkali liquor is 13.Wherein, neutralisation treatment can remove magnesium alloy die casting surface again for the second time
The residual film of black.
G, use chemical solution carry out chemical membrane process to this magnesium alloy die casting, and then ultrasonic pure water cleans.Its
In, temperature is 20-35 degree Celsius, and the time is the 20-35 second, and the PH of chemical solution is 1.8-2.5.The present embodiment is preferred, and temperature is
28 degrees Celsius, the time is 28 seconds, and the PH of chemical solution is 2.2.Wherein, chemical membrane process can be on magnesium alloy die casting surface
Form a kind of chemical deposition conversion film.
H, use hole sealing agent carry out sealing treatment to this magnesium alloy die casting, and then ultrasonic pure water cleans.Wherein, temperature
For 40-60 degree Celsius, the time is 1-3 minute, and the PH of hole sealing agent is 6-8.The present embodiment is preferred, and temperature is 50 degrees Celsius, the time
Being 2 minutes, the PH of hole sealing agent is 7.Wherein, sealing treatment can the scarce eye on chemical deposition conversion film in filling steps g.
I, this magnesium alloy die casting is dried.Wherein, temperature is 100-140 degree Celsius, and the time is 15-35 minute.
The present embodiment is preferred, and temperature is 120 degrees Celsius, and the time is 25 minutes.
In step c and e, surface adjusts the organic Mixed adjustment agent being added with volume fraction 1-10% in solution.Described organic
Mixed adjustment agent include volume fraction be 1-5% gluconic acid, 1-10% tartaric acid, 10-25% tri-glycolic, 40-60% lactic acid with
And 0.1% surfactant.Described surfactant is OP-10, polyoxy ethylene or polyoxyethylenated alcohol.The present embodiment is preferred,
Surface adjusts and is added with the mailing organic Mixed adjustment agent mentioning departure 5% in solution；Organic Mixed adjustment agent includes volume fraction
It is 5% gluconic acid, 10% tartaric acid, 25% 3 glycolic, 60% lactic acid and 0.1% surfactant；Surfactant is the most poly-
Oxygen ethylene.
In step h, described hole sealing agent is organosilicate.
In step b, c, d, e, f, g and h, ultrasonic pure water wash number is 2 times, and temperature is room temperature, and each time is
The 15-25 second, pure water PH is 6-8.
The present invention has carried out two subsurface adjustment process, twice neutralisation treatment and sealing treatment to magnesium alloy die casting,
Surface adjusts in solution containing organic Mixed adjustment agent, makes the oxide on magnesium alloy die casting surface, mould release, dirt, cold rnning
Work magnesium chips and other residues are thoroughly removed, and have chemical deposition conversion film in magnesium alloy die casting surface configuration, and make up
The scarce eye of chemical deposition conversion film, improves magnesium alloy die casting anticorrosive property and aesthetic property.
The above disclosed present pre-ferred embodiments that is only, can not limit the right model of the present invention with this certainly
Enclose, the equivalent variations therefore made according to the claims in the present invention, still belong to the scope that the present invention is contained.
Claims (10)
1. a magnesium alloy die casting surface treatment method, comprises the following steps:
A, offer magnesium alloy die casting；
B, use degreasant solution carry out ungrease treatment to this magnesium alloy die casting, and then ultrasonic pure water cleans；
C, use surface adjust solution and this magnesium alloy die casting carry out surface adjustment for the first time, and then ultrasonic pure water cleans；
D, use alkali liquor carry out neutralisation treatment for the first time to this magnesium alloy die casting, and then ultrasonic pure water cleans；
E, use surface adjust solution and this magnesium alloy die casting carry out the adjustment of second time surface, and then ultrasonic pure water cleans；
F, use alkali liquor carry out second time neutralisation treatment to this magnesium alloy die casting, and then ultrasonic pure water cleans；
G, use chemical solution carry out chemical membrane process to this magnesium alloy die casting, and then ultrasonic pure water cleans；
H, use hole sealing agent carry out sealing treatment to this magnesium alloy die casting, and then ultrasonic pure water cleans；
I, this magnesium alloy die casting is dried.
A kind of magnesium alloy die casting surface treatment method the most according to claim 1, it is characterised in that: in step b, temperature
For 50-80 degree Celsius, the time is 4-6 minute, and the PH of degreasant solution is 11 ± 0.2.
A kind of magnesium alloy die casting surface treatment method the most according to claim 1, it is characterised in that: in step c, temperature
For 40-70 degree Celsius, the time is the 40-60 second, and it is 5-10 that surface adjusts the PH of solution.
A kind of magnesium alloy die casting surface treatment method the most according to claim 1, it is characterised in that: in step d or f,
Temperature is 60-90 degree Celsius, and the time is 4-6 minute, and the PH of alkali liquor is 11-15.
A kind of magnesium alloy die casting surface treatment method the most according to claim 1, it is characterised in that: in step e, temperature
For 40-70 degree Celsius, the time is the 5-15 second, and it is 5-10 that surface adjusts the PH of solution.
A kind of magnesium alloy die casting surface treatment method the most according to claim 1, it is characterised in that: in step g, temperature
For 20-35 degree Celsius, the time is the 20-35 second, and the PH of chemical solution is 1.8-2.5.
A kind of magnesium alloy die casting surface treatment method the most according to claim 1, it is characterised in that: in step h, temperature
For 40-60 degree Celsius, the time is 1-3 minute, and the PH of hole sealing agent is 6-8.
A kind of magnesium alloy die casting surface treatment method the most according to claim 1, it is characterised in that: in step i, temperature
For 100-140 degree Celsius, the time is 15-35 minute.
A kind of magnesium alloy die casting surface treatment method the most according to claim 1, it is characterised in that: in step c or e,
Surface adjusts the organic Mixed adjustment agent being added with volume fraction 1-10% in solution, and described organic Mixed adjustment agent includes Fructus Vitis viniferae
Saccharic acid, tartaric acid, three glycolics, lactic acid and surfactant.
A kind of magnesium alloy die casting surface treatment method the most according to claim 1, it is characterised in that: step b, c, d,
In e, f, g and h, ultrasonic pure water wash number is 2 times, and temperature is room temperature, and each time is the 15-25 second, and pure water PH is 6-
8。
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| CN201610737348.8A CN106222679A (en) | 2016-08-29 | 2016-08-29 | A kind of magnesium alloy die casting surface treatment method |
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| CN201610737348.8A CN106222679A (en) | 2016-08-29 | 2016-08-29 | A kind of magnesium alloy die casting surface treatment method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082657A (en) * | 2018-08-23 | 2018-12-25 | 中航力源液压股份有限公司 | A kind of high temperature Mn Phosphatizing Technology |
| CN111041539A (en) * | 2020-01-02 | 2020-04-21 | 杭州和韵科技有限公司 | Aluminum anode oxidation dyeing pre-double-step surface conditioner and preparation and application thereof |
| CN111218692A (en) * | 2020-03-04 | 2020-06-02 | 敬得(苏州)科技有限公司 | Surface treatment method for metal die casting |
| CN111421125A (en) * | 2020-03-17 | 2020-07-17 | 扬州凯翔精铸科技有限公司 | Device and method for quickly processing surface of die casting |
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| CN109082657A (en) * | 2018-08-23 | 2018-12-25 | 中航力源液压股份有限公司 | A kind of high temperature Mn Phosphatizing Technology |
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| CN111218692A (en) * | 2020-03-04 | 2020-06-02 | 敬得(苏州)科技有限公司 | Surface treatment method for metal die casting |
| CN111421125A (en) * | 2020-03-17 | 2020-07-17 | 扬州凯翔精铸科技有限公司 | Device and method for quickly processing surface of die casting |
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