CN106222647A - A kind of surface treatment method of Mg alloy - Google Patents
A kind of surface treatment method of Mg alloy Download PDFInfo
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- CN106222647A CN106222647A CN201610585026.6A CN201610585026A CN106222647A CN 106222647 A CN106222647 A CN 106222647A CN 201610585026 A CN201610585026 A CN 201610585026A CN 106222647 A CN106222647 A CN 106222647A
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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
- C23C22/73—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 characterised by the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/57—Three layers or more the last layer being a clear coat
- B05D7/576—Three layers or more the last layer being a clear coat each layer being cured, at least partially, separately
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/30—Anodisation of magnesium or alloys based thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2508/00—Polyesters
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- Chemical & Material Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
A kind of surface treatment method of Mg alloy, it includes step: step one: magnesium alloy vehicle wheel carries out pretreatment, described pretreatment includes that sand papering, deionized water are cleaned and baking；Step 2: magnesium alloy vehicle wheel is put into impregnation process in chromiumfree conversion agent tank liquor, controlled dip time at 1～2 minute；Step 3: application Microarc Oxidation Surface Treatment technology forms oxide layer on magnesium alloy vehicle wheel surface, controls thicknesses of layers at 10～15 microns；Step 4: spraying end powder and solidify, the thickness of described end powder is 60～80 microns；Step 5: spraying colored paint and solidify, the thickness of described colored paint is 15～20 microns；Step 6: spraying transparent powder and solidify, the thickness of described transparent powder is 80～100 microns.The advantage of the present invention program is the organic coating layer surface protection system compared to conventional wheel, can more effectively improve adhesive strength and the corrosion resistance of magnesium alloy vehicle wheel.
Description
Technical field
The present invention relates to field of metal surface treatment, more particularly to a kind of surface treatment method of Mg alloy.
Background technology
Automotive light weight technology has become Global Auto industrial technology new development trend, and magnesium alloy is owing to density is little, specific strength
The feature high with specific stiffness, becoming auto industry has most the metal material of application potential.But corrosion stability of magnesium alloy can be poor so that magnesium
Application and the popularization of alloy are restricted.
Summary of the invention
It is an object of the invention to provide a kind of method that magnesium alloy vehicle wheel surface processes protection, the method can be effectively improved magnesium
The corrosion resistance of alloy wheel.In order to realize this goal of the invention, the invention discloses a kind of magnesium alloy vehicle wheel surface and process anti-
The method protected, have employed the protection system of powder+crylic acid colored paint+polyester transparent powder at the bottom of differential arc oxidization surface layer+acrylic acid, compares
In the organic coating layer surface protection system of conventional wheel, can more effectively improve the corrosion resistance of magnesium alloy vehicle wheel and be correlated with
The reliability of product.
In one aspect of the invention, it is provided that a kind of surface treatment method of Mg alloy, the method comprising the steps of: step
One: Mg alloy surface carries out pretreatment, described pretreatment includes that sand papering, deionized water are cleaned and baking；Step 2:
Mg alloy surface is put into impregnation process in chromiumfree conversion agent tank liquor, controls dip time at 1～2 minute；Step 3: apply micro-
Arc oxidized surface treatment technology forms oxide layer at Mg alloy surface, controls thicknesses of layers at 10～15 microns；Step 4: Xiang Wei
Spraying end powder on Mg alloy surface after arc oxidation and solidify, the thickness of described end powder is 60～80 microns；Step 5: to
Spraying colored paint on Mg alloy surface after the solidification of end powder and solidify, the thickness of described colored paint is 15～20 microns；Step 6:
Spraying transparent powder on Mg alloy surface after colored paint solidifies and solidify, the thickness of described transparent powder is 80～100 microns.
In currently preferred aspect, in step one, described sand paper is 800 mesh Sponge sand paper, and baking uses infrared
Mode of heating.
In currently preferred aspect, in step one, the temperature of baking is 170～190 DEG C, and baking time is 15～20
Minute.
In currently preferred aspect, in step 2, described chromiumfree conversion agent tank liquor concentration control 0.2～
0.3g/L, temperature controls at 45～55 degrees Celsius, and pH value controls 2.9～3.9, and electrical conductivity controls at 200～300 μ S/cm, leaching
The stain time controlled at 1～2 minute.
In currently preferred aspect, in step 3, described oxidated layer thickness controls at 10～15 microns.
In currently preferred aspect, in step 4, described end powder is powder at the bottom of acrylic acid, the thickness of described end powder
It it is 60～80 microns.
In currently preferred aspect, in step 5, described colored paint is crylic acid colored paint.The thickness of described colored paint
It it is 15～20 microns.
In currently preferred aspect, in step 6, described transparent powder is polyester transparent powder, described transparent powder
Thickness is 80～100 microns.
In currently preferred aspect, the magnesium alloy used is AZ80 magnesium alloy.
In currently preferred aspect, described Mg alloy surface is wheel surface.
In currently preferred aspect, the magnesium alloy used is AZ80 magnesium alloy, and described Mg alloy surface is wheel
Surface；In step one, the AZ80 magnesium alloy vehicle wheel 3M Sponge sand paper of 800 mesh is polished successively, removes removing oxide layer, so
Cleaning with deionized water afterwards, cold wind dries up rear Infrared Heating 18 minutes；In step 2, tank liquor per ton adds 0.25kg Chrome-free and turns
Agent Gardobond X 4661, is warmed to 55 degrees Celsius, is sufficiently stirred for 2 hours, and pH value is 2.9, and electrical conductivity is 200 μ S/cm,
Being impregnated by magnesium alloy vehicle wheel 2 minutes subsequently, 120 degrees Celsius are dried 20 minutes；In step 3, Microarc Oxidation Surface Treatment technology
Form oxide layer on magnesium alloy vehicle wheel surface, control thicknesses of layers at 10～15 microns；In step 4, the end powder sprayed is third
Powder at the bottom of olefin(e) acid, color is black, and thickness is 60～80 microns, subsequently under 180 degrees celsius, solidifies end powder, Gu
The change time is 15 minutes；In step 5, colored paint thickness is 15～20 microns, solidifies 15 minutes, institute under 150 degrees celsius
The colored paint stated is crylic acid colored paint；In step 6, the thickness of transparent powder is 80～100 microns, and in 177 degrees celsius
Lower solidification 17 minutes, described transparent powder is acrylic clear powder.
The advantage of technical scheme is, have employed powder+crylic acid colored paint at the bottom of differential arc oxidization surface layer+acrylic acid
The protection system of+polyester transparent powder, compared to the organic coating layer surface protection system of conventional wheel, can more effectively improve magnesium
The corrosion resistance of alloy wheel.
Detailed description of the invention
As the most additionally illustrated, the process of dusting of the present embodiment all uses Wagner powder spraying apparatus to complete.
In an embodiment of the present invention, described " chromiumfree conversion agent " is blunt for forming one layer of densification at Mg alloy surface
Change film.Its product of auto polymerization monomolecular coating (SAM) product entitled Gardobond X that such as Chemetall is supplied
4661.Gardobond X 4661 molecule can form one layer of monomolecular film on aluminium substrate surface.
Although embodiment only gives the processing method of wheel surface, one skilled in the art will appreciate that the table of magnesium alloy
Face, no matter on wheel surface or the surface of other goods, can use the method for the present invention to process.
Embodiment 1
The magnesium alloy used is AZ80 magnesium alloy.In the present embodiment, specifically chosen for magnesium alloy vehicle wheel.Take 3 sections
Same model magnesium alloy vehicle wheel carries out following test.
The AZ80 magnesium alloy vehicle wheel 3M Sponge sand paper of 800 mesh is polished successively, removes removing oxide layer, then spend from
Sub-water cleans, and cold wind dries up rear Infrared Heating 18 minutes.
After carrying out the protection of necessity, is dusted in magnesium alloy vehicle wheel surface.The end powder sprayed is powder at the bottom of acrylic acid,
Color is black, and purchased from powdery paints branch company of Qingtian Industry Co., Ltd., Guangzhou, article No. is JW-A1701C, and end powder thickness is
60～80 microns.Subsequently under 180 degrees celsius, solidifying end powder, hardening time is 15 minutes.
To this magnesium alloy vehicle wheel surface color spray paint and solidify, colored paint thickness is 15～20 microns, at 150 degrees Celsius
Under the conditions of solidify 15 minutes.Described colored paint is the paint of electrosilvering color, acrylic component.It is purchased from CETELON company of Germany,
Article No. is 025/010902/28.
Subsequently, using Wagner powder spraying apparatus that magnesium alloy vehicle wheel surface is sprayed transparent powder, the thickness of transparent powder is 80～100
Micron, and solidify 17 minutes under 177 degrees celsius.The transparent powder used is the transparent powder of acrylic component, and it is purchased
From Akzo Nobel powdery paints company limited, article No. is 158C121.
In the present embodiment: by observing under lamp box, it is known that the flat appearance of 3 wheels carrying out manufacturing experimently is smooth, without substantially
Defect, meets the requirements.Recorded by ED300 eddy current thickness meter, end powder powder thickness average out to 78 microns, thickness after spraying colored paint
Average out to 96 microns, thickness average out to 194 microns (ISO2360:2003) after spraying transparent powder.By DIN EN ISO 2409
Method test, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently meets the requirements.Tried by ASTM B368:2009 method
Test, it is known that the coating corrosion resistance of 3 wheels carrying out manufacturing experimently can be undesirable, continues through DIN EN ISO 2409 side
Method is tested, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently is undesirable.Tried by GB/T10125:1997 method
Test, it is known that the coating corrosion resistance of 3 wheels carrying out manufacturing experimently can meet the requirements, and continues through DIN EN ISO 2409 method
Test, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently is undesirable.
Embodiment 2
The magnesium alloy used is AZ80 magnesium alloy.In the present embodiment, specifically chosen for magnesium alloy vehicle wheel.Take 3 sections
Same model magnesium alloy vehicle wheel carries out following test.
The AZ80 magnesium alloy vehicle wheel 3M Sponge sand paper of 800 mesh is polished successively, removes removing oxide layer, then spend from
Sub-water cleans, and cold wind dries up rear Infrared Heating 18 minutes.
Application Microarc Oxidation Surface Treatment technology forms oxide layer on magnesium alloy vehicle wheel surface, control thicknesses of layers 10～
15 microns.
After carrying out the protection of necessity, is dusted in magnesium alloy vehicle wheel surface.The end powder sprayed is powder at the bottom of acrylic acid,
Color is black, and purchased from powdery paints branch company of Qingtian Industry Co., Ltd., Guangzhou, article No. is JW-A1701C, and end powder thickness is
60～80 microns.Subsequently under 180 degrees celsius, solidifying end powder, hardening time is 15 minutes.
To this magnesium alloy vehicle wheel surface color spray paint and solidify, colored paint thickness is 15～20 microns, at 150 degrees Celsius
Under the conditions of solidify 15 minutes.Described colored paint is the paint of electrosilvering color, acrylic component.It is purchased from CETELON company of Germany,
Article No. is 025/010902/28.
Subsequently, using Wagner powder spraying apparatus that magnesium alloy vehicle wheel surface is sprayed transparent powder, the thickness of transparent powder is 80～100
Micron, and solidify 17 minutes under 177 degrees celsius.The transparent powder used is the transparent powder of acrylic component, and it is purchased
From Akzo Nobel powdery paints company limited, article No. is 158C121.
In the present embodiment: by observing under lamp box, it is known that the flat appearance of 3 wheels carrying out manufacturing experimently is smooth, without substantially
Defect, meets the requirements.Recorded by ED300 eddy current thickness meter, end powder powder thickness average out to 75 microns, thickness after spraying colored paint
Average out to 94 microns, thickness average out to 184 microns (ISO2360:2003) after spraying transparent powder.By DIN EN ISO 2409
Method test, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently meets the requirements.Tried by ASTM B368:2009 method
Test, it is known that the coating corrosion resistance of 3 wheels carrying out manufacturing experimently can meet the requirements, and continues through DIN EN ISO 2409 method
Test, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently is undesirable.Tried by GB/T10125:1997 method
Test, it is known that the coating corrosion resistance of 3 wheels carrying out manufacturing experimently can meet the requirements, and continues through DIN EN ISO 2409 method
Test, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently meets the requirements.
Embodiment 3
The magnesium alloy used is AZ80 magnesium alloy.In the present embodiment, specifically chosen for magnesium alloy vehicle wheel.Take 3 sections
Same model magnesium alloy vehicle wheel carries out following test.
The AZ80 magnesium alloy vehicle wheel 3M Sponge sand paper of 800 mesh is polished successively, removes removing oxide layer, then spend from
Sub-water cleans, and cold wind dries up rear Infrared Heating 18 minutes.
Preparation tank liquor: tank liquor per ton adds 0.25kg chromiumfree conversion agent, is warmed to 55 degrees Celsius, is sufficiently stirred for 2 hours, pH
Value is 2.9, and electrical conductivity is 200 μ S/cm.Being impregnated by magnesium alloy vehicle wheel 2 minutes subsequently, 120 degrees Celsius are dried 20 minutes.Described
Chromiumfree conversion agent is powder, can form associative key, to help anticorrosion between metal and sprayed coating.It is purchased from CHEMETALL
Company, article No. is Gardobond X4661.
Application Microarc Oxidation Surface Treatment technology forms oxide layer on magnesium alloy vehicle wheel surface, control thicknesses of layers 10～
15 microns.
After carrying out the protection of necessity, is dusted in magnesium alloy vehicle wheel surface.The end powder sprayed is powder at the bottom of acrylic acid,
Color is black, and purchased from powdery paints branch company of Qingtian Industry Co., Ltd., Guangzhou, article No. is JW-A1701C, and end powder thickness is
60～80 microns.Subsequently under 180 degrees celsius, solidifying end powder, hardening time is 15 minutes.
To this magnesium alloy vehicle wheel surface color spray paint and solidify, colored paint thickness is 15～20 microns, at 150 degrees Celsius
Under the conditions of solidify 15 minutes.Described colored paint is the paint of electrosilvering color, acrylic component.It is purchased from CETELON company of Germany,
Article No. is 025/010902/28.
Subsequently, using Wagner powder spraying apparatus that magnesium alloy vehicle wheel surface is sprayed transparent powder, the thickness of transparent powder is 80～100
Micron, and solidify 17 minutes under 177 degrees celsius.The transparent powder used is the transparent powder of acrylic component, and it is purchased
From Akzo Nobel powdery paints company limited, article No. is 158C121.
In the present embodiment: by observing under lamp box, it is known that the flat appearance of 3 wheels carrying out manufacturing experimently is smooth, without substantially
Defect, meets the requirements.Recorded by ED300 eddy current thickness meter, end powder powder thickness average out to 73 microns, thickness after spraying colored paint
Average out to 91 microns, thickness average out to 187 microns (ISO2360:2003) after spraying transparent powder.By DIN EN ISO 2409
Method test, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently meets the requirements.Tried by ASTM B368:2009 method
Test, it is known that the coating corrosion resistance of 3 wheels carrying out manufacturing experimently can meet the requirements, and continues through DIN EN ISO 2409 method
Test, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently meets the requirements.By GB/T10125:1997 method test,
Understand the coating corrosion resistance of 3 wheels carrying out manufacturing experimently can meet the requirements, continue through the examination of DIN EN ISO 2409 method
Test, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently meets the requirements.
Comparative example 1
The magnesium alloy used is AZ80 magnesium alloy.In the present embodiment, specifically chosen for magnesium alloy vehicle wheel.Take 3 sections
Same model magnesium alloy vehicle wheel carries out following test.
Being cleaned by AZ80 magnesium alloy vehicle wheel deionized water, cold wind dries up rear Infrared Heating 18 minutes.
After carrying out the protection of necessity, is dusted in magnesium alloy vehicle wheel surface.The end powder sprayed is powder at the bottom of acrylic acid,
Color is black, and purchased from powdery paints branch company of Qingtian Industry Co., Ltd., Guangzhou, article No. is JW-A1701C, and end powder thickness is
100～120 microns.Subsequently under 180 degrees celsius, solidifying end powder, hardening time is 15 minutes.
To this magnesium alloy vehicle wheel surface color spray paint and solidify, colored paint thickness is 15～20 microns, at 150 degrees Celsius
Under the conditions of solidify 15 minutes.Described colored paint is the paint of electrosilvering color, acrylic component.It is purchased from CETELON company of Germany,
Article No. is 025/010902/28.
Subsequently, spraying the colored varnish to this magnesium alloy vehicle wheel surface and solidify, colored varnish thickness is 20～25 microns,
Solidify 16 minutes under 147 degrees celsius.The described colored varnish is the paint of acrylic component.It is purchased from CETELON company of Germany,
Article No. is 0006/010808/59.
In the present embodiment: by observing under lamp box, it is known that the flat appearance of 3 wheels carrying out manufacturing experimently is smooth, without substantially
Defect, meets the requirements.Recorded by ED300 eddy current thickness meter, end powder powder thickness average out to 112 μm, thickness after spraying colored paint
Average out to 130 μm, thickness average out to 152 μm (ISO2360:2003) after the spraying colored varnish.By DIN EN ISO 2409 method
Test, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently is undesirable.Tried by ASTM B368:2009 method
Test, it is known that the coating corrosion resistance of 3 wheels carrying out manufacturing experimently can be undesirable, continues through DIN EN ISO 2409 side
Method is tested, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently is undesirable.Tried by GB/T10125:1997 method
Test, it is known that the coating corrosion resistance of 3 wheels carrying out manufacturing experimently can be undesirable, continues through DIN EN ISO 2409 side
Method is tested, it is known that the coating adhesive strength of 3 wheels carrying out manufacturing experimently is undesirable.
Traditional wheel application mode, i.e. the protection system of powder+crylic acid colored paint+acrylic clear paint at the bottom of acrylic acid, right
Magnesium alloy vehicle wheel surface processes, and the face coat adhesive strength of magnesium alloy vehicle wheel and decay resistance are all unable to reach and want
Ask.And use the protection system of powder+crylic acid colored paint+polyester transparent powder at the bottom of differential arc oxidization surface layer+acrylic acid, compared to tradition
The organic coating layer surface protection system of wheel, can more effectively improve the corrosion resistance of magnesium alloy vehicle wheel and Related product
Reliability, wherein through powder+crylic acid colored paint at the bottom of differential arc oxidization surface layer+acrylic acid that pretreatment and chromiumfree conversion agent processed
The protection system corrosion resistance of+polyester transparent powder is optimum.
Claims (10)
1. a surface treatment method of Mg alloy, it is characterised in that the method comprising the steps of: step one: is entered by Mg alloy surface
Row pretreatment, described pretreatment includes that sand papering, deionized water are cleaned and baking；Step 2: Mg alloy surface is put into
Impregnation process in chromiumfree conversion agent tank liquor, controlled dip time at 1～2 minute；Step 3: application Microarc Oxidation Surface Treatment skill
Art forms oxide layer at Mg alloy surface, controls thicknesses of layers at 10～15 microns；Step 4: the magnesium alloy after differential arc oxidation
Spraying end powder on surface and solidify, the thickness of described end powder is 60～80 microns；Step 5: the magnesium after end powder solidifies closes
Spraying colored paint in gold surface and solidify, the thickness of described colored paint is 15～20 microns；Step 6: the magnesium after colored paint solidifies
Spraying transparent powder on alloy surface and solidify, the thickness of described transparent powder is 80～100 microns.
Method the most according to claim 1, it is characterised in that in step one, described sand paper is 800 mesh sand sponge
Paper, baking uses Infrared Heating mode；The temperature of baking is 170～190 DEG C, and baking time is 15～20 minutes.
Method the most according to claim 1, it is characterised in that in step 2, described chromiumfree conversion agent tank liquor concentration
Controlling 0.2～0.3g/L, temperature controls at 45～55 degrees Celsius, and pH value controls 2.9～3.9, electrical conductivity control 200～
300 μ S/cm, dip time controlled at 1～2 minute.
Method the most according to claim 1, it is characterised in that in step 3, described oxidated layer thickness controls 10
～15 microns.
Method the most according to claim 1, it is characterised in that in step 4, described end powder is powder at the bottom of acrylic acid, institute
The thickness of the end powder stated is 60～80 microns.
Method the most according to claim 1, it is characterised in that in step 5, described colored paint is crylic acid colored paint.Institute
The thickness of the colored paint stated is 15～20 microns.
Method the most according to claim 1, it is characterised in that in step 6, described transparent powder is polyester transparent powder,
The thickness of described transparent powder is 80～100 microns.
Method the most according to claim 1, it is characterised in that the magnesium alloy used is AZ80 magnesium alloy.
Method the most according to claim 1, it is characterised in that described Mg alloy surface is wheel surface.
Method the most according to claim 1, it is characterised in that the magnesium alloy used is AZ80 magnesium alloy, described magnesium
Alloy surface is wheel surface；In step one, carry out AZ80 magnesium alloy vehicle wheel successively by the 3M Sponge sand paper of 800 mesh beating
Mill, removes removing oxide layer, then cleans with deionized water, and cold wind dries up rear Infrared Heating 18 minutes；In step 2, tank liquor per ton
Adding 0.25kg chromiumfree conversion agent Gardobond X 4661, be warmed to 55 degrees Celsius, be sufficiently stirred for 2 hours, pH value is 2.9,
Electrical conductivity is 200 μ S/cm, is impregnated by magnesium alloy vehicle wheel 2 minutes subsequently, and 120 degrees Celsius are dried 20 minutes；In step 3, micro-
Arc oxidized surface treatment technology forms oxide layer on magnesium alloy vehicle wheel surface, controls thicknesses of layers at 10～15 microns；In step
In four, the end powder sprayed is powder at the bottom of acrylic acid, and color is black, and thickness is 60～80 microns, subsequently in 180 degrees celsius
Under, end powder is solidified, hardening time is 15 minutes；In step 5, colored paint thickness is 15～20 microns, Celsius 150
Solidifying 15 minutes under the conditions of degree, described colored paint is crylic acid colored paint；In step 6, the thickness of transparent powder is 80～100 micro-
Rice, and solidify 17 minutes under 177 degrees celsius, described transparent powder is acrylic clear powder.
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| CN107855254A (en) * | 2017-10-04 | 2018-03-30 | 桂林理工大学 | A kind of preparation method of the corrosion-resistant organic composite coating of Mg alloy surface |
| CN107899923A (en) * | 2017-11-27 | 2018-04-13 | 李迺武 | A kind of method of surface of magnesium aluminium alloy processing |
| CN108745826A (en) * | 2017-11-24 | 2018-11-06 | 广灵县尚镁科技有限公司 | Magnesium and magnesium alloy hub coating process |
| CN110102453A (en) * | 2019-04-18 | 2019-08-09 | 长沙新材料产业研究院有限公司 | A kind of Magnesiumalloy surface modifying technique |
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Cited By (5)
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| CN107855254A (en) * | 2017-10-04 | 2018-03-30 | 桂林理工大学 | A kind of preparation method of the corrosion-resistant organic composite coating of Mg alloy surface |
| CN108745826A (en) * | 2017-11-24 | 2018-11-06 | 广灵县尚镁科技有限公司 | Magnesium and magnesium alloy hub coating process |
| CN107899923A (en) * | 2017-11-27 | 2018-04-13 | 李迺武 | A kind of method of surface of magnesium aluminium alloy processing |
| CN110102453A (en) * | 2019-04-18 | 2019-08-09 | 长沙新材料产业研究院有限公司 | A kind of Magnesiumalloy surface modifying technique |
| CN110102453B (en) * | 2019-04-18 | 2022-04-05 | 长沙新材料产业研究院有限公司 | Magnesium alloy surface modification process |
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