CN108588780A - A kind of production method of tertiary colour aluminium section bar and its aluminium section bar of preparation - Google Patents

A kind of production method of tertiary colour aluminium section bar and its aluminium section bar of preparation Download PDF

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Publication number
CN108588780A
CN108588780A CN201711390048.8A CN201711390048A CN108588780A CN 108588780 A CN108588780 A CN 108588780A CN 201711390048 A CN201711390048 A CN 201711390048A CN 108588780 A CN108588780 A CN 108588780A
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section bar
aluminium section
aluminium
carried out
hole sealing
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史宏伟
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Tianjin New Alon Technology Co Ltd
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Tianjin New Alon Technology Co Ltd
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/04—Electrophoretic coating characterised by the process with organic material

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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)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A kind of production method of tertiary colour aluminium section bar and its aluminium section bar of preparation, include the following steps：1. the aluminium section bar through pre-treatment is carried out anodized；2. the aluminium section bar after anodic oxidation is carried out dyeing processing, the aluminium shape surface is made to form first layer chromatograph；3. dyeing treated aluminium section bar is carried out fixation treatment, the fixation treatment is that aluminium section bar is put into high temperature hole sealing solution to carry out high temperature hole sealing；4. the aluminium section bar after fixation is carried out electrophoretic process, aluminium shape surface is made to form translucent coloured electrodeposited paint film, i.e. second layer chromatograph；Electrophoresis groove liquid used in the electrophoretic process includes gloss paint, delustring paint, toner or mill base and dispersant.5. the aluminium section bar after electrophoretic process is carried out curing process, tertiary colour aluminium section bar is finally obtained.Aluminium section bar that the present invention obtains is bright-colored uniformly, does not shade, excellent in weather, is suitable for indoor and outdoor difference occasion, and its requirement to anode oxide film film thickness is relatively low, effectively reduces production cost.

Description

A kind of production method of tertiary colour aluminium section bar and its aluminium section bar of preparation
Technical field
The present invention relates to the production method of aluminium shape surface processing technology field more particularly to a kind of tertiary colour aluminium section bar and Its aluminium section bar prepared.
Background technology
Aluminium section bar extinction electrophoresis technology is currently to carry out nickel salt, pink salt or tin-nickel with the oxidation film Jing Guo anodic oxidation to mix The transparent extinction electrophoresis processing carried out after salt electrolytic coloring is closed, to obtain blue extinction electrophoresis composite membrane, the disadvantages of this method It is equipment investment is big, water consumption is big, production cost is high, aluminium shape surface color is unstable, yield rate is low etc..In the prior art Useful decoration method carries out transparent extinction electrophoresis processing again after obtaining black oxide film, but compound using the black that this method obtains Film is not bright-coloured enough, and weatherability is poor, is only used for indoor equal not sunkissed place, and be not suitable for aluminum alloy doors and windows, Curtain wall, solar energy frame etc. are directly exposed to outdoor place and use.In addition, in the prior art to obtaining the black of pure color Color extinction electrophoresis coating requires the oxide thickness of aluminium section bar thicker, need to usually reach 15 when carrying out anodized μm or more, this can not only increase production cost, but also obtained black composite membrane is not uniform enough, and weatherability is poor.
Invention content
Technical problem to be solved by the present invention lies in provide production method and its preparation of a kind of tertiary colour aluminium section bar Aluminium section bar, the aluminium section bar that is obtained using this kind of method is bright-colored not to shade, excellent in weather, is applicable not only to interior decoration, The high occasion of outdoor weather resistance requirement is applied also for, and its requirement to anode oxide film film thickness is relatively low, effectively reduces life Produce cost.
The present invention provides a kind of production methods of tertiary colour aluminium section bar, include the following steps：
1. the aluminium section bar through pre-treatment is carried out anodized, the aluminium shape surface is made to form anode oxide film；
2. the aluminium section bar after anodized is carried out dyeing processing, the aluminium shape surface is made to form first layer color Layer；
3. dyeing treated aluminium section bar is carried out fixation treatment, the fixation treatment is that aluminium section bar is put into high temperature hole sealing High temperature hole sealing is carried out in solution；
4. the aluminium section bar after fixation treatment is carried out electrophoretic process, aluminium shape surface is made to form translucent coloured electrophoretic paint Film, i.e. second layer chromatograph；Electrophoresis groove liquid used in the electrophoretic process includes gloss paint, delustring paint, toner or mill base, and Dispersant；
5. the aluminium section bar after electrophoretic process is carried out curing process, tertiary colour aluminium section bar is obtained.
Further, 1. the step is that the aluminium section bar after pre-treatment is put into 17-23 DEG C of oxidation trough to aoxidize 10- 50min, obtains the anode oxide film that thickness is 6-9 μm, and the free sulphuric acid concentration of the oxidation trough is controlled in 130-180g/L, aluminium Ion concentration is controlled in 5-20g/L.
Further, 2. the step is that the aluminium section bar after anodized is put into dyeing liquor to dye, dyeing Time is 2-10min, and the dyeing liquor is allocated using organic or inorganic dyestuff.
Further, 3. the step is that the aluminium section bar after dyeing is put into sealing of hole in the high temperature hole sealing solution of not fluoride ion 2-10min controls the high temperature hole sealing solution temperature at 55-65 DEG C, pH values are in 5.7-6.5 in sealing pores.
Further, the high temperature hole sealing solution is allocated with the hole sealing agent of a concentration of 5-8g/L, in the hole sealing agent Including Ni2+, pH buffer, pollen inhibitor and organic polymer.
Further, the step be 4. by the aluminium section bar after high temperature hole sealing be put into temperature be 18-26 DEG C, pH value 8.0- 9.0, in the electrophoresis groove liquid that conductivity is 700-1100 μ S/cm, solid part is 8-12%, with the electrophoresis of 120-180V 120-480s。
Further, the step 4. in the dispersant account for the 0.05-0.1% of the electrophoresis groove liquid, described point The main ingredient of powder is alkanone type organic.
Further, the step 5. in the curing process in, solidification temperature is 170-200 DEG C, and hardening time is 1800-2700s。
In addition, the present invention also provides a kind of tertiary colour aluminium section bars that production method as described above is prepared.
Compared with prior art, the invention has the advantages that：
1. the aluminium section bar of the present invention anodic oxidation film thickness that surface is formed in anodized need to only be controlled in 6-9 μm, then pass through dyeing and distinctive high temperature hole sealing fixation treatment, you can the coloured film layer of band of high-weatherability is obtained, with Anode oxide film film thickness in the prior art is compared, and film thickness of the invention is much thinner, has both saved the time of anodic oxidation, Reduce production cost.
2. the present invention uses distinctive high temperature hole sealing fixation treatment, fade during electrophoretic process after preventing dyeing, together When substantially improve the weatherability of product, be applicable not only to interior decoration, apply also for the high occasion of outdoor weather resistance requirement.
3. the present invention is dyed in organic or inorganic dyeing liquor, aluminium shape surface is made to form first layer chromatograph；Disappearing Mill base or toner are added in photoelectrophoresis paint, so that aluminium shape surface is formed second layer chromatograph, first layer chromatograph and second layer chromatograph can Same color or different colours are selected according to demand, and it is first layer chromatograph and that obtained aluminium shape surface, which is formed by color, The tertiary colour of two layers of chromatograph, so as to get aluminium shape surface color it is uniform, it is bright-coloured, do not shade, be unique, is beautiful, and its color jail Spend it is splendid, according to GB5237.3-2008《Aluminum alloy building section third portion electrodeposition coated profiles》It is required that carrying out acceleration weatherability Experiment, weatherability grade is up to III grade of (test period 2000h, 0 grade of dusting degree, gloss retention >=80%, discoloration Δ Eab *≤ 1 grade).
4. distinctive dispersant is added in the present invention in delustring paint, mill base or toner is enable fully to dissolve and evenly dispersed In extinction electrophoresis tank liquor, also act as the effect for preventing mill base or toner from precipitating, so as to get aluminium shape surface extinction electrophoresis apply Film color is evenly, beautiful, color fastness is splendid, reaches colour stable.
Description of the drawings
Fig. 1 is the process flow diagram of the present invention.
Specific implementation mode
The present invention is further illustrated With reference to embodiment.Wherein, attached drawing only for illustration, What is indicated is only schematic diagram, it will be understood by those skilled in the art that in attached drawing certain known flows and its explanation may omit be can With understanding.
Embodiment 1, as shown in Figure 1, a kind of production method of tertiary colour aluminium section bar, includes the following steps：
One, the aluminium section bar through pre-treatment is subjected to anodized, the aluminium shape surface is made to form anode oxide film； The pre-treatment includes：
1. pendant：Aluminium section bar is hung on hanger；For big part aluminium section bar, aluminum steel binding or exclusive clamps sub-folder may be used On conducting rod；For smallclothes aluminium section bar, since the technological process of the present invention is free of electrolytic coloring process, so can also use The titaniums hangers such as titanium dish, titanium needle carry out bridging.
2. degreasing：The purpose of degreasing is the greasy dirt for removing aluminium section bar surface in extrusion process and being adhered to, such as processing and lubrication Oil, impression of the hand, detritus etc..The dedicated degreaser of aluminium section bar may be used in skimming processes, can also use at anodic oxidation Waste sulfuric acid solution after reason degreases, and the present embodiment is exactly the greasy dirt that aluminium shape surface is removed using waste sulfuric acid solution. Specifically, at room temperature, aluminium section bar being put into waste sulfuric acid solution and impregnates 60-300s, generation is reacted with aluminium section bar by acid Gas makes grease, detritus etc. be removed from aluminium shape surface.
3. first wash：Aluminium section bar after degreasing is hanging, after waste sulfuric acid solution substantially drips to the greatest extent, it is transferred to the first water Washing trough carries out first wash, and the first wash time is 60-180s.During first wash, it should avoid because of cleaning It is unclean and bring waste sulfuric acid solution into later process, second wash is preferably carried out after the completion of first wash, it is described The second wash time is 60-180s.
4. alkaline etching：Aluminium section bar after second wash is put into alkaline etching 60-300s in 45-55 DEG C of Alkaline etchant.
5. third time is washed：Aluminium section bar after alkaline etching is subjected to third time washing at room temperature, third time washing time is 60-180s。
6. the 4th washing：Aluminium section bar after third time is washed carries out the 4th washing, the 4th washing at room temperature Time is 60-180s.
7. neutralizing ash disposal：Aluminium section bar after 4th washing is carried out at room temperature to neutralize ash disposal processing, the neutralization removes The neutralization reagent that ash processing uses is sulfuric acid solution, specifically, the sulfuric acid concentration control of the neutralization chamber is at 130-180g/L, place The reason time is 60-500s.
8. the 5th washing：Ash disposal will be neutralized, and treated that aluminium section bar is hanging, and the is carried out after sulfuric acid solution drip and use up substantially Five washings, the 5th washing time are 60-180s.Should be avoided in the 5th water-washing process because clear do not wash clean and by sulphur Acid solution brings later process into, preferably carries out the 6th washing, the 6th washing time after the completion of washing at the 5th time For 60-180s.
9. the anodized is carried out in sulfuric acid solution, by electrochemical action, aluminium shape surface is made to be formed Certain thickness, uniformly, fine and close, active porous layer anode oxide film, it is ensured that subsequently dye smooth.Specifically For treated that aluminium section bar is put into 17-23 DEG C of oxidation trough aoxidizes 10-50min by premenstrual, obtains the sun that thickness is 6-9 μm Pole oxidation film, in 130-180g/L, aluminium ion concentration is controlled in 5-20g/L for the free sulphuric acid concentration control of the oxidation trough.Such as Fruit sulfuric acid concentration is too low (being less than 130g/L), and aluminium ion concentration is excessively high (being higher than 20g/L), and anodic oxidation film activity can be caused to drop It is low.
Two, the aluminium section bar after anodic oxidation is subjected to dyeing processing, the aluminium shape surface is made to form first layer chromatograph；
1. the 7th washing：Before dyeing, the aluminium section bar after anodized need to be carried out to the 7th washing；Specifically For, aluminium section bar is hanging, the 7th washing is carried out after sulfuric acid solution substantially drips to the greatest extent, the 7th washing time is 60-180s； In the 7th water-washing process, it should avoid because not washing clean clearly and bringing sulfuric acid solution into later process, preferably the 7th The 8th washing is carried out after the completion of secondary washing, the 8th washing time is 60-180s.
2. dyeing：Aluminium section bar after 8th washing is put into dyeing liquor and is dyed, dyeing time 2-10min. The dyeing liquor is allocated by organic or inorganic dyestuff, and specific color and shade can voluntarily adjust dye according to required model Color liquid concentration and dyeing time.
3. the 9th washing：Aluminium section bar after dyeing is hanging, the 9th washing is carried out after this drop of liquid-based to be dyed is most, the Nine washing times are 60-180s；In the 9th water-washing process, it should avoid bringing dyeing liquor into later process, preferably exist The tenth washing is carried out after the completion of 9th washing, the described ten washing time is 60-180s.
Three, dyeing treated aluminium section bar is subjected to fixation treatment；
1. the fixation treatment is that aluminium section bar is put into high temperature hole sealing solution to carry out high temperature hole sealing.Specifically, by the tenth Aluminium section bar after secondary washing, which is put into the high temperature hole sealing solution of not fluoride ion, carries out sealing pores, and the sealing pores time is excellent It is selected as 2-10min.In the sealing pores, at 55-65 DEG C, pH value control exists for the temperature control of the high temperature hole sealing solution 5.7-6.5, the pH value are preferably adjusted by acetic acid or ammonium hydroxide.The high temperature hole sealing solution is the envelope with a concentration of 5-8g/L Hole agent is allocated, and the hole sealing agent includes Ni2+, pH buffer, pollen inhibitor and organic polymer.
2. pure water is washed：Aluminium section bar after fixation treatment is carried out pure water to wash；The time that the pure water is washed is preferably 60- 180s, the pure water, which is washed, can further clean aluminium shape surface, and impurity, ion is avoided to bring later process into.
3. hot pure water is washed：Aluminium section bar after pure water is washed is placed in 60-80 DEG C of hot pure water and washes 180-300s.
4. draining：Aluminium section bar after hot pure water is washed vacantly drains, Draining time 1800-2700s.
Four, the aluminium section bar drained is subjected to electrophoretic process, so that aluminium shape surface is formed translucent coloured electrodeposited paint film, i.e., Second layer chromatograph；Anodic electrophoresis paint or cathode electrodip painting may be used in the electrophoretic process, and preferably anode is electric in the present embodiment Swimming paint.The electrophoresis groove liquid used in the electrophoretic process includes gloss paint, delustring paint, toner or mill base, wherein gloss paint Demand that can be according to client to gloss with delustring paint proportion suitably adjusts, and the present embodiment is preferably gloss paint:Delustring paint =1:4.In electrophoresis process, the voltage control of electrophoresis groove liquid is in 120-180V, and at 18-26 DEG C, pH value control exists for temperature control 8.0-9.0, conductivity control are controlled in 8-12%, electrophoresis time in 120-480s in 700-1100 μ S/cm, the control of solid part. In order to enable mill base or toner to be evenly dispersed in extinction electrophoresis tank liquor, 0.05- is additionally added in the electrophoresis groove liquid The main ingredient of 0.1% dispersant, the dispersant is alkanone type organic.Preferably, the dispersant and the mill base Or toner is added simultaneously, and stir or cycle balance, after formulated the mill base or toner can fully dissolved and evenly dispersed In extinction electrophoresis tank liquor, make extinction electrophoresis coating color evenly while, also there is the work for preventing mill base or toner from precipitating With.
It is dyed in organic or inorganic dyeing liquor, aluminium section bar Surface of profile is made to form first layer chromatograph；In delustring electricity Mill base or toner is added in swimming paint, so that aluminium shape surface is formed second layer chromatograph, first layer chromatograph and second layer chromatograph can bases Demand selects same color or different colours, and it is first layer chromatograph and second to finally obtain aluminium shape surface and be formed by color The tertiary colour of layer chromatograph, so as to get aluminium shape surface color it is uniform, it is bright-coloured, do not shade, be unique, is beautiful, and its color fastness It is splendid, according to GB5237.3-2008《Aluminum alloy building section third portion electrodeposition coated profiles》It is required that carrying out accelerating weatherability examination It tests, weatherability grade is up to III grade of (test period 2000h, 0 grade of dusting degree, gloss retention >=80%, discoloration Δ Eab *≤ 1 grade).Five, the aluminium section bar after electrophoretic process is subjected to curing process, obtains tertiary colour aluminium section bar.
1. the tenth primary washing：Aluminium section bar after electrophoretic process is put into the tenth water for being added to electrophoretic paint and solvent The tenth once washing is carried out in washing trough, the tenth washing time is 60-180s.In the tenth water-washing process, answer It avoids that floating paint is made to remain in aluminium shape surface because of clear do not wash clean, influences the surface quality of electrophoresis film, later process is excellent It is selected in after the completion of the tenth primary washing and carries out the 12nd time in the 12nd rinsing bowl for being added to electrophoretic paint and solvent and wash, 12nd washing time is 60-180s.
2. draining：Aluminium section bar after 12nd washing is vacantly drained, Draining time 1800-2700s.
3. curing：Aluminium section bar after draining carries out curing process, during the curing process, solidification temperature control At 170-200 DEG C, curing time control obtains finished product dyeing and forms tertiary colour aluminium profiles added with color extinction electrophoresis in 1800-2700s Material.
Embodiment 2, on the basis of embodiment 1, in the anodized, sulfuric acid concentration control in the oxidation trough System is in 139g/L, and aluminium ion concentration is preferably controlled in 10g/L, and aluminium section bar is put into the oxidation trough and aoxidizes 14min, obtains film thickness For 7 μm of anode oxide film.In the fixation treatment, the aluminium section bar after the 6th washing is put into the high temperature of not fluoride ion Sealing pores are carried out in hole sealing solution, the sealing pores time is preferably 2-10min.In the sealing pores, the height The temperature control of warm hole sealing solution is at 55-65 DEG C, and pH value is controlled 6, and the pH value is preferably adjusted by acetic acid or ammonium hydroxide.Institute It states high temperature hole sealing solution to be formulated using the hole sealing agent of a concentration of 7g/L, inside contains Ni2+, pH buffer, pollen inhibitor And organic polymer.
In the electrophoretic process, anodic electrophoresis paint or cathode electrodip painting, the present embodiment may be used in the electrophoretic process In preferably cathode electrodip painting.The electrophoresis groove liquid used in the electrophoretic process includes gloss paint, delustring paint, toner or color Slurry, wherein gloss paint and delustring paint proportion can be according to client to gloss demand suitably adjust, the present embodiment preferably has Lac varnish:Delustring paint=1:4.In electrophoresis process, the control of the voltage of electrophoresis groove liquid is in 170V, and temperature control is at 22 DEG C, pH value control System is in 8.0-9.0, and in 1051 μ S/cm, the control of solid part 9%, electrophoresis time is controlled in 360s for conductivity control.In order to make Mill base or toner can be evenly dispersed in extinction electrophoresis tank liquor, and the dispersion of 0.05-0.1% is additionally added in the electrophoresis groove liquid The main ingredient of agent, the dispersant is alkanone type organic.Preferably, the dispersant adds simultaneously with the mill base or toner Enter, and stirring or cycle balance, the mill base or toner can be made fully to dissolve after formulated and be dispersed in extinction electrophoresis slot In liquid, make extinction electrophoresis coating color evenly while also have the function of preventing mill base or toner from precipitating.
Embodiment 3, on the basis of embodiment 1, in the anodized, sulfuric acid concentration control in the oxidation trough System is in 120g/L, and aluminium ion concentration is preferably controlled in 12g/L, and aluminium section bar is put into the oxidation trough and aoxidizes 30min, obtains film thickness For 8 μm of anode oxide film.In the fixation treatment, the aluminium section bar after the 6th washing is put into the high temperature of not fluoride ion Sealing pores are carried out in hole sealing solution, the sealing pores time is preferably 2-10min.In the sealing pores, the height The temperature control of warm hole sealing solution is at 55-65 DEG C, and pH value is controlled 6.2, and the pH value is preferably adjusted by acetic acid or ammonium hydroxide. The high temperature hole sealing solution is formulated using the hole sealing agent of a concentration of 6.5g/L, inside contains Ni2+, pH buffer, pollen suppression Preparation and organic polymer.
In the electrophoretic process, anodic electrophoresis paint or cathode electrodip painting, the present embodiment may be used in the electrophoretic process In preferably cathode electrodip painting.The electrophoresis groove liquid used in the electrophoretic process includes gloss paint, delustring paint, toner or color Slurry, wherein gloss paint and delustring paint proportion can be according to client to gloss demand suitably adjust, the present embodiment preferably has Lac varnish:Delustring paint=1:4.In electrophoresis process, the control of the voltage of electrophoresis groove liquid is in 130V, and temperature control is at 22 DEG C, pH value control System is in 8.0-9.0, and in 749 μ S/cm, the control of solid part 11%, electrophoresis time is controlled in 360s for conductivity control.In order to make Mill base or toner can be evenly dispersed in extinction electrophoresis tank liquor, and 0.08% dispersant is additionally added in the electrophoresis groove liquid, The main ingredient of the dispersant is alkanone type organic.Preferably, the dispersant is added simultaneously with the mill base or toner, And stir or cycle balance, the mill base or toner can be made fully to dissolve after formulated and be dispersed in extinction electrophoresis tank liquor In, make extinction electrophoresis coating color evenly while also have the function of preventing mill base or toner from precipitating.
The tertiary colour aluminium section bar that production method according to the invention obtains, color is uniform, bright-coloured, stable, beautiful, color is firm Spend it is splendid, according to GB5237.3-2008《Aluminum alloy building section third portion electrodeposition coated profiles》It is required that carrying out acceleration weatherability Experiment, weatherability grade is up to III grade of (test period 2000h, 0 grade of dusting degree, gloss retention >=80%, discoloration Δ Eab *≤ 1 grade).Aluminium section bar prepared by the present invention is applicable not only to interior decoration, applies also for the high field of outdoor weather resistance requirement It closes, and delustring film can not generate light pollution with delustring.Exist slightly in addition, the aluminium section bar of the present invention applies also for some The occasion of abrasion.Such as between two fan door, since the frequent folding of door has slight abrasion, long-time service can cause paint film to grind Damage and expose the silvery white of aluminium section bar parent metal, the tertiary colour aluminium section bar that production method using the present invention obtains, even if having Color electrophoresis film concentrated wear can still show the due color of product, keep overall beautiful.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments Invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each implementation Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these modification or It replaces, the protection domain for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.

Claims (9)

1. a kind of production method of tertiary colour aluminium section bar, it is characterised in that：Include the following steps：
1. the aluminium section bar through pre-treatment is carried out anodized, the aluminium shape surface is made to form anode oxide film；
2. the aluminium section bar after anodized is carried out dyeing processing, the aluminium shape surface is made to form first layer chromatograph；
3. dyeing treated aluminium section bar is carried out fixation treatment, the fixation treatment is that aluminium section bar is put into high temperature hole sealing solution Middle carry out high temperature hole sealing；
4. the aluminium section bar after fixation treatment is carried out electrophoretic process, aluminium shape surface is made to form translucent coloured electrodeposited paint film, That is second layer chromatograph；Electrophoresis groove liquid used in the electrophoretic process includes gloss paint, delustring paint, toner or mill base, Yi Jifen Powder；
5. the aluminium section bar after electrophoretic process is carried out curing process, tertiary colour aluminium section bar is obtained.
2. a kind of production method of tertiary colour aluminium section bar according to claim 1, it is characterised in that：The step be 1. by Aluminium section bar after pre-treatment is put into 17-23 DEG C of oxidation trough and aoxidizes 10-50min, obtains the anodic oxidation that thickness is 6-9 μm Film, in 130-180g/L, aluminium ion concentration is controlled in 5-20g/L for the free sulphuric acid concentration control of the oxidation trough.
3. a kind of production method of tertiary colour aluminium section bar according to claim 1, it is characterised in that：The step be 2. by Aluminium section bar after anodized, which is put into dyeing liquor, to be dyed, and dyeing time 2-10min, the dyeing liquor, which uses, to be had Machine or inorganic dyestuff are allocated.
4. a kind of production method of tertiary colour aluminium section bar according to claim 1, it is characterised in that：The step be 3. by Aluminium section bar after dyeing is put into sealing of hole 2-10min in the high temperature hole sealing solution of not fluoride ion, in sealing pores, described in control High temperature hole sealing solution temperature is at 55-65 DEG C, and pH value is in 5.7-6.5.
5. a kind of production method of tertiary colour aluminium section bar according to claim 4, it is characterised in that：The high temperature hole sealing is molten Liquid is allocated with the hole sealing agent of a concentration of 5-8g/L, and the hole sealing agent includes Ni2+, pH buffer, pollen inhibitor and Organic polymer.
6. a kind of production method of tertiary colour aluminium section bar according to claim 1, it is characterised in that：The step be 4. by Aluminium section bar after high temperature hole sealing is put into that temperature is 18-26 DEG C, pH value 8.0-9.0, conductivity are 700-1100 μ S/cm, solid Part is in the electrophoresis groove liquid of 8-12%, with the electrophoresis 120-480s of 120-180V.
7. a kind of production method of tertiary colour aluminium section bar according to claim 6, it is characterised in that：The step 4. in The dispersant accounts for the 0.05-0.1% of the electrophoresis groove liquid, and the main ingredient of the dispersant is alkanone type organic.
8. a kind of production method of tertiary colour aluminium section bar according to claim 1, it is characterised in that：The step 5. in In the curing process, solidification temperature is 170-200 DEG C, hardening time 1800-2700s.
9. a kind of tertiary colour aluminium section bar being prepared by claim 1-8 any one of them production methods.
CN201711390048.8A 2017-12-21 2017-12-21 A kind of production method of tertiary colour aluminium section bar and its aluminium section bar of preparation Pending CN108588780A (en)

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