CN110528045A - The surface treatment method of metal material - Google Patents
The surface treatment method of metal material Download PDFInfo
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- CN110528045A CN110528045A CN201910774863.7A CN201910774863A CN110528045A CN 110528045 A CN110528045 A CN 110528045A CN 201910774863 A CN201910774863 A CN 201910774863A CN 110528045 A CN110528045 A CN 110528045A
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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
-
- 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
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- 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
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
- C25D11/243—Chemical after-treatment using organic dyestuffs
-
- 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
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
- C25D11/246—Chemical after-treatment for sealing layers
-
- 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
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a kind of surface treatment methods of metal material.The surface treatment method includes: anodized: during the metal material is immersed electrolyte, at least partly the stage is immersed using acceleration or deceleration, so that the thickness of the oxidation film of the metal material surface changes in gradient；Dyeing processing: the metal material is immersed in dye solution, to be dyed to the oxidation film；Sealing pores: to dyeing, treated that the oxidation film carries out sealing pores.
Description
Technical field
The present invention relates to technical field of surface, more particularly, to a kind of surface treatment method of metal material.
Background technique
In surface treatment, the gradient color of material surface mainly pass through PVD plated film, colour band transfer, anodic oxidation, spraying,
The modes such as silk-screen, color printing, dyeing, 3D printing, radium-shine texture are realized.For in the gradient color processing of phone housing, PVD is plated
Film is a kind of common technique.The technique changes the film forming thickness in glass substrate upper, middle and lower region when passing through spatter film forming, with
The thickness change for forming increasing or decreasing, to form specific iris light belt.However, the gradual change section of spectrum colour is very difficult
Control needs not stop to adjust the revision board inside sputter, to control the optical thickness of glass different zones, while this technique
It is subject to supply chain.
For the shell of high-grade digital product, gradient color spraying process is generallyd use.Gradient color spraying process is to utilize two
Kind or more color paint spraying equipment.By reforming equipment structure, a kind of color can be allowed slowly to be transitioned into another face
Color forms the effect of gradient color.However, this technique, the surface decoration layer of shell is paint film.Due to the knot of paint film and metal
It is poor with joint efforts, it is easy to produce obscission in use；Simultaneously as holding very much during the lower use of the hardness of paint film
It is also easy to produce scratch, is worn, therefore surface is easy to tarnish.
The anodic oxidation product of metal can be handled by dyeing, immerse dye molecule in anodic oxidation fenestra, with
Realize fade effect.The gradient color that this method is formed has better metal-like and better surface property.It is existing at present
Anodic oxidation after, gradient color dyeing processing need to add water-based ink in dyestuff, need to be removed ink after dyeing processing
Processing.Complex process is caused, it is at high cost, and there are the wasting of resources, the problem of environmental pollution.
Accordingly, it is desirable to provide a kind of new technical solution, to solve the above technical problems.
Summary of the invention
It is an object of the present invention to provide a kind of new solutions of the surface treatment method of metal material.
According to the first aspect of the invention, a kind of surface treatment method of metal material is provided.The surface treatment method
Include: anodized: during the metal material is immersed electrolyte, at least partly the stage uses acceleration or deceleration
It immerses, so that the thickness of the oxidation film of the metal material surface changes in gradient；Dyeing processing: the metal material is immersed
In dye solution, to be dyed to the oxidation film；Sealing pores: to dyeing, treated that the oxidation film carries out at sealing of hole
Reason.
Optionally, the metal material is aluminium alloy, copper alloy or stainless steel.
Optionally, in the anodized, accelerating acceleration when immersing is that acceleration when acceleration is immersed is
0.001-0.03cm/min2, or the acceleration to slow down when immersing is -0.001--0.03cm/min2。
Optionally, in the anodized, the entire immersion process of the metal material immersed using accelerating or
Person, which is slowed down, to be immersed.
Optionally, in the anodized, the entire immersion process of the metal material, which uses, first to be accelerated, subtracts again
The mode of speed immerses immersion, or is immersed by the way of first slowing down, accelerating afterwards.
Optionally, it is respectively first position, the second position that the both ends in direction are immersed on the edge for defining metal material, and described first
Setting position between position and the second position is the third place, and the acceleration from the first position to the third place is
First acceleration, from the third place to the acceleration of the second position be the second acceleration, first acceleration and
Second acceleration it is contrary, it is equal in magnitude.
Optionally, dyeing processing includes: from the first position to the third place direction by the metal material
Material immerses in the first dye solution, to carry out first time dyeing, and will from the second position to the third place direction
The metal material immerses in the second dye solution, is dyed with carrying out second.
Optionally, the oxidation film with a thickness of 5-20 microns.
Optionally, the metal material is fine aluminium, 5XXX line aluminium alloy, 6XXX line aluminium alloy or 7XXX line aluminium alloy.
Optionally, when carrying out dyeing processing, the soaking time at the biggish position of the thickness of the oxidation film is greater than thickness
The soaking time at lesser position.
According to one embodiment of the disclosure, in embodiments of the present invention, by metal by the way of accelerating or slowing down
Material immerses in electrolyte, since residence time is different in the electrolytic solution for the different parts of metal material, therefore the thickness of oxidation film
Degree is different.After carrying out dyeing processing, gradient color is presented in the surface of metal material.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the flow chart according to the surface treatment method of one embodiment of the disclosure.
Fig. 2-4 is the schematic diagram according to the anodized of one embodiment of the disclosure.
Fig. 5 is the schematic diagram according to the aluminum substrate of one embodiment of the disclosure.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
According to one embodiment of the disclosure, a kind of surface treatment method of metal material is provided.As shown in Figure 1, should
Method includes:
Anodized: during metal material is immersed electrolyte 40, at least partly the stage using acceleration or subtracts
Speed immerses, so that the thickness of the oxidation film of metal material surface changes in gradient；
Dyeing processing: metal material is immersed in dye solution, to be dyed to oxidation film；
Sealing pores: sealing pores are carried out to dyeing treated oxidation film.
The purpose of anodized is to form oxidation film in metal material surface.Anodized is in electrolyte 40
It carries out.Metal material is immersed by way of suspension in electrolyte 40.Metal material table under the voltage of setting, as anode
Face is oxidized, to form oxidation film.
In embodiments of the present invention, metal material is immersed in electrolyte 40 by the way of accelerating or slowing down, due to
The different parts of metal material residence time in electrolyte 40 is different, therefore the thickness of oxidation film is different.Such as the residence time
Longer, then the thickness of oxidation film is bigger；Conversely, the residence time is shorter, then the thickness of oxidation film is smaller.By controlling metal material
The acceleration in electrolyte 40 is immersed, so that the thickness of oxidation film changes in gradient, rather than forms the oxidation film of homogeneous thickness.
Fig. 2-4 is the schematic diagram according to the anodized of one embodiment of the disclosure.In this example embodiment, metal material
Material (such as aluminium alloy) is mounted on hanger 20.Overhead traveling crane 10 drives hanger 20 to move up and down.Control device (not shown) controls day
The speed of vehicle 10, to enable aluminum alloy to accelerate or slow down to immerse in electrolyte 40.
When carrying out dyeing processing, dyestuff enters in the hole of oxidation film formation, to make oxidation film that color be presented.Oxidation
For the thickness difference of film when being dyed, the color that metal material surface is presented is deep, shallow different.
For example, thickness is bigger, then the depth of hole is bigger, can accommodate more dyestuffs, the color after the dyeing of the position
It is deeper；Conversely, thickness is smaller, then the depth of hole is smaller, can accommodate less dyestuff, and the color after the dyeing of the position is got over
Shallowly.Since the thickness of oxidation film changes in gradient, therefore after dyeing, the color of metal material changes in gradient, that is, forms gradual change
Color.
The thickness of oxidation film is excessive, then the time of anodized is longer, and excessive hole easy to form leads to surface
Roughness descent；Conversely, the thickness of oxidation film is too small, then it is not easy to be colored.Optionally, oxidation film is micro- with a thickness of 5-20
Rice.In the thickness range, dyeing, the surfacing of metal material can be effectively performed in oxidation film.
When carrying out dyeing processing, the soaking time at the biggish position of the thickness of oxidation film is greater than the lesser position of thickness
Soaking time.Soaking time of the different parts in dye solution is controlled according to the different-thickness of oxidation film, can guarantee different portions
The dyeing of position is more abundant.
Sealing pores can effectively block the hole after dyeing, so that dyestuff is mothballed in hole.Sealing pores can have
The loss of dyestuff is prevented to effect, compared with paint film, the stability of color is higher, and when by external force, color does not allow malleable.The table
The reliability for the metal material that surface treatment method is formed is good.
For example, metal material can be, but not limited to, aluminium alloy, copper alloy or stainless steel.Those skilled in the art can
To be selected according to actual needs.
Optionally, metal material is aluminium, for example, fine aluminium, 5XXX line aluminium alloy, 6XXX line aluminium alloy or 7XXX system aluminium close
Gold.The pigmentable function admirable of above-mentioned material, corrosion resistance are good.
For example, the electrolyte of anodic oxidation can be, but not limited to, sulfuric acid solution, oxalic acid solution, phosphoric acid solution etc., or
The mixed solution of the above-mentioned acid of person.
For example, hole sealing agent uses nickeliferous hole sealing agent, the mixing without at least one of nickel hole sealing agent or a variety of hole sealing agents
Agent.Those skilled in the art can select according to actual needs.
It in one example, further include pre-treatment before carrying out anodic oxidation.For example, pre-treatment is to include rinsing, taking off
Rouge, neutralization, chemical polishing, washing.Wherein, the purpose of flushing is that dust, soil for removing metal material surface etc. is miscellaneous
Matter.The purpose of degreasing is the grease for removing metal material surface, prevents grease to be covered on metal material surface, slows down anodic oxidation
Speed.The purpose of chemical polishing is that metal material surface is made to become smooth, uniform.It is remaining that washing can remove above-mentioned steps
Medicament and the impurity of generation etc..
It in one example, further include post-processing after carrying out sealing pores.Post-processing includes carrying out to metal material
Ash disposal, washing drying and processing.
In one example, anodic oxidation uses sulfuric acid solution.The concentration of sulfuric acid solution is 180-240g/L, oxidation processes
Temperature be 15-25 DEG C, the time be -60 minutes 20 minutes, oxidation voltage 10-25V.Under this condition, oxidation film being capable of shape
At nanoscale, micron order hole, and hole is uniform.
In one example, in anodized, accelerating acceleration when immersing is 0.001-0.03cm/min2,
Or the acceleration to slow down when immersing is -0.001--0.03cm/min2.In the acceleration range, the change of gradient of oxidation film
Significantly.After dyeing, color-grading works well.
In one example, in anodized, the entire immersion process of metal material immersed using accelerating or
Slow down and immerses.That is, metal material is from one end to its opposite end, using the immersion that accelerates or slow down.Wherein, slow down to immerse and refer to
Metal material is first accelerated into setting initial velocity before immersing electrolyte 40, is entered in electrolyte 40 with the initial velocity of setting, so
Gradually slow down afterwards.In this example embodiment, one end of metal material expires opposite end, and change of gradient is integrally presented in oxidation film.It is dyeing
After processing, the color of metal material surface is gradually deepened from one end to opposite end.
In one example, in anodized, the entire immersion process of metal material, which uses, first to be accelerated, slows down again
Mode immerse.For example, immersing speed after electrolyte 40 is immersed in one end of metal material and first accelerating to setting speed, then
Slow down, to form the biggish oxidation film of thickness at the both ends of metal material, forms the lesser oxidation film of thickness at middle part.
The thickness of oxidation film changes in gradient.
Or it is immersed by the way of first slowing down, accelerating afterwards.For example, metal material immerses electrolyte with the initial velocity set
In 40, it is then gradually decelerated to setting speed, is next ramped up by the setting speed, until reaching opposite end.Pass through this
The both ends of kind mode, metal material form the lesser oxidation film of thickness, form the biggish oxidation film of thickness at middle part.Oxidation film
Thickness changes in gradient.
Above-mentioned immersion mode make metal material present after dyeing both ends deep intermediate shallow gradient color or both ends it is shallow in
Between deep gradient color.
In one example, as shown in figure 5, it is respectively first position that the both ends in direction are immersed on the edge for defining metal material
11, the second position 12, the setting position between first position 11 and the second position 12 are the third place 13.From first position 11 to
The acceleration of the third place 13 is the first acceleration, is the second acceleration from the third place 13 to the acceleration of the second position 12.
First acceleration and the second acceleration it is contrary, it is equal in magnitude.In this way, gradient color from deep to shallow, by shallowly to
Deep variation is more balanced.
For example, setting position is the middle position of first position 11 and the second position 12.In this way, middle position two sides are gradually
Discoloration is symmetric.
In one example, dyeing processing includes: to immerse metal material from first position 11 to 13 direction of the third place
In first dye solution, to carry out first time dyeing；And metal material is soaked from the second position 12 to 13 direction of the third place
Enter in the second dye solution, is dyed with carrying out second.First dye solution and the second dye solution are respectively different colours
Solution, to show the gradient color of two kinds of colors.
For example, when carrying out anodized, using first accelerating the immersion mode slowed down again to carry out, so that first
The thickness of the oxidation film of position 11, the second position 12 is larger, and the thickness of the oxidation film of the third place 13 is smaller.It is handled in dyeing
Afterwards, the first deeper color is presented in first position 11, the second deeper color is presented in the second position 12, in the third place 13
The shallower gradual change color from the first color to the second color transition is presented.
<embodiment 1>
S11, metal material are aluminum substrate 30.Aluminum substrate 30 is that fine aluminium, 5XXX system alloy, 6XXX system alloy or 7XXX system close
Gold.The surface of aluminum substrate 30 is rinsed, degreasing, neutralization, chemical polishing, the pre-treatments such as washing；
S12, electrolyte 40 use sulfuric acid solution.Aluminum substrate 30 is immersed in sulfuric acid solution and carries out anodized, with
The oxidation film of change of gradient is formed on the surface of aluminum substrate 30.Wherein, as shown in figure 5, from first position 11 to the third place 13
The acceleration of immersion is 0.0125cm/min2.Then, the acceleration immersed from the third place 13 to the second position 12 be-
0.0125cm/min2.Make the thickness of the oxidation film of aluminum substrate 30 from first position 11 to the third place 13 through the above way
It gradually becomes smaller, is become larger from the third place 13 to the second position 12.The concentration of sulfuric acid solution is 210g/L.Anodized
Technological parameter are as follows: temperature: 19 DEG C, the time: 2400s, voltage: 15V；
S13, dyeing processing is carried out to the oxidation film on 30 surface of aluminum substrate using the dyestuff of two kinds of colors.Wherein, first
In secondary dyeing, the main component of dyestuff is the blue dyes of the model 501 of wild production difficult to understand；In second of dyeing, dyestuff
Main component is the orchil of the model 105 of wild production difficult to understand.The concentration for the dye solution that two kinds of dyestuffs are formed is 1g/L.
Direction along the second position 12 to the third place 13 carries out first time dyeing to oxidation film, successively carries out first time dye to oxidation film
Color, dyeing time 2min, to form the first color on oxidation film.First color is from the second position 12 to the third place 13
Direction gradually becomes shallower as.After dyeing first time, the surface of aluminum substrate 30 is sufficiently washed.It then, will be by aluminum substrate
30 180 ° of rotations.Second dyeing is successively to carry out second from first position 11 to the third place 13 to oxidation film and dye, dyeing
Time is 3min, to form the second color on oxidation film.Second color gradually becomes shallower as from first position 11 to the third place 13.
After dyeing for second, the surface of aluminum substrate 30 is sufficiently washed.Finally, second is formed close on oxidation film
Set 12 the first color, close to first position 11 the second color, and positioned at the third place 13 two kinds of color transitions gradually
Discoloration.The technological parameter when carrying out dyeing processing are as follows: 40-45 DEG C of temperature, pH:5.0-5.5；
S14, sealing pores are carried out to aluminum substrate 30, hole sealing agent used is the DX-600 of Japan's wild production difficult to understand, at sealing of hole
The parameter of reason: the concentration of hole sealing agent: 12g/L, temperature: 95 DEG C, pH:6.0.
S15, post-processing.Ash disposal, hot water wash, washing, drying and processing are carried out to aluminum substrate 30.
Test: using finished product obtained by spectral photometric colour measuring meter auxiliary observation, the color gradient effect of finished surface is good,
Gradient pattern is continuous, clear, stereovision is strong.
<embodiment 2>
S21, metal material are aluminum substrate 30.The surface of aluminum substrate 30 is rinsed, degreasing, neutralization, chemical polishing, water
Wash equal pre-treatments；
S22, electrolyte 40 use sulfuric acid solution.Aluminum substrate 30 is immersed in sulfuric acid solution and carries out anodized, with
The oxidation film of change of gradient is formed on the surface of aluminum substrate 30.Wherein, electrolyte 40 is immersed with the initial velocity of setting, from first
Set 11 to the second position 12 immerse acceleration be -0.0125cm/min2, to make the thickness of the oxidation film on the surface of aluminum substrate 30
Degree 12 gradually thickens from first position 11 to the second position.The concentration of sulfuric acid solution is 200g/L；The technique of anodized
Parameter are as follows: temperature: 20 DEG C, voltage: 17V；
S23, dyeing processing is carried out to the oxidation film on 30 surface of aluminum substrate using the dyestuff of multiple color.Wherein, first
In secondary dyeing, the main component of dyestuff is the mixed dye of two kinds of orchils of the model 102,139 of wild production difficult to understand；
In secondary dyeing, the main component of dyestuff is the mixed dye of two kinds of welds of the model 301 and 302 of wild production difficult to understand.
Dyeing course is as described in Example 1.Technological parameters are as follows: the concentration of two kinds of dye solutions is 1g/L, temperature: 40-45 DEG C,
PH:5.0-5.5, time: 3min；
S24, sealing pores are carried out to aluminum substrate 30.Sealing pores carry out twice.Hole sealing agent used in sealing pores twice
For the SH-2 and ES-1 of the production of Switzerland's Clariant.The technological parameter of sealing pores are as follows: pore-sealing liquid concentration: SH-2 5ml/L, ES-1
For 12ml/L；Temperature: SH-2 is 80 DEG C, and ES-1 is 95 DEG C；Time: SH-2 1200s, ES-1 2400s；PH:SH-2 is
5.5, ES-1 6.0；
S25, post-processing.Ash disposal, hot water wash, washing, drying and processing are carried out to aluminum substrate 30.
Test: using finished product obtained by spectral photometric colour measuring meter auxiliary observation, the color gradient effect of finished surface is good,
Gradient pattern is continuous, clear, stereovision is strong.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of surface treatment method of metal material, it is characterised in that: include:
Anodized: during the metal material is immersed electrolyte, at least partly the stage uses acceleration or deceleration
It immerses, so that the thickness of the oxidation film of the metal material surface changes in gradient；
Dyeing processing: the metal material is immersed in dye solution, to be dyed to the oxidation film；
Sealing pores: to dyeing, treated that the oxidation film carries out sealing pores.
2. surface treatment method according to claim 1, it is characterised in that: the metal material is aluminium alloy, copper alloy
Or stainless steel.
3. surface treatment method according to claim 1, it is characterised in that: in the anodized, accelerate leaching
Fashionable acceleration is 0.001-0.03cm/min2, or the acceleration to slow down when immersing is -0.001--0.03cm/min2。
4. surface treatment method according to claim 1, it is characterised in that: in the anodized, the gold
The entire immersion process for belonging to material, which is immersed or slowed down using acceleration, to immerse.
5. surface treatment method according to claim 1, it is characterised in that: in the anodized, the gold
The entire immersion process for belonging to material immerses immersion by the way of first accelerating, slowing down again, or using the side first slowed down, accelerated afterwards
Formula immerses.
6. surface treatment method according to claim 1, it is characterised in that: the edge for defining metal material immerses the two of direction
End is respectively first position, the second position, and the setting position between the first position and the second position is the third place,
It is the first acceleration from the first position to the acceleration of the third place, adding from the third place to the second position
Speed is the second acceleration, first acceleration and second acceleration it is contrary, it is equal in magnitude.
7. surface treatment method according to claim 6, it is characterised in that: the dyeing processing includes: from described first
Position immerses the metal material in the first dye solution to the third place direction, to carry out first time dyeing, and
The metal material is immersed in the second dye solution from the second position to the third place direction, to carry out second
Dyeing.
8. surface treatment method according to claim 1, it is characterised in that: the oxidation film with a thickness of 5-20 microns.
9. surface treatment method according to claim 1, it is characterised in that: the metal material is fine aluminium, 5XXX system aluminium
Alloy, 6XXX line aluminium alloy or 7XXX line aluminium alloy.
10. surface treatment method according to claim 1, it is characterised in that: when carrying out dyeing processing, the oxidation film
The biggish position of thickness soaking time be greater than the lesser position of thickness soaking time.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112981492A (en) * | 2021-03-15 | 2021-06-18 | 福建欧仕儿童用品股份有限公司 | Gradient car frame tube process method |
| CN114197008A (en) * | 2022-01-08 | 2022-03-18 | 东莞市虹桥五金有限公司 | Graded-color anodic oxidation equipment and technology thereof |
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