CN108607797A - A kind of surface plastic spraying technique of aluminium alloy extrusions - Google Patents
A kind of surface plastic spraying technique of aluminium alloy extrusions Download PDFInfo
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- CN108607797A CN108607797A CN201611100770.9A CN201611100770A CN108607797A CN 108607797 A CN108607797 A CN 108607797A CN 201611100770 A CN201611100770 A CN 201611100770A CN 108607797 A CN108607797 A CN 108607797A
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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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- 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
- B05D7/58—No clear coat specified
- B05D7/586—No clear coat specified each layer being cured, at least partially, separately
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/16—Homopolymers or copolymers of vinylidene fluoride
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such 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
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
-
- 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
- B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
- B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
- B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders
-
- 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
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing 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
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
Abstract
The invention discloses a kind of surface plastic spraying technique of aluminium alloy extrusions, by dedusting, deoil, wash, be surface-treated, secondary washing, primer spray, first time curing process, topcoating, second of curing process, spray finishing varnish, third time curing process series of processes obtain a kind of aluminium alloy extrusions of strong adhesive force.The present invention is formed the protective film of one layer of safety and environmental protection using chromium-free surface treatment liquid processing, increases the binding force and anti-aging capability of coating and aluminum alloy surface, extend the service life of aluminium alloy covered after inspection, dedusting, deoiling；In the protection film surface successively spray-applied primer, finishing coat, finishing varnish, curing process is carried out after one layer of spraying every time, enhances the adhesive force between every layer.The aluminium alloy section surface that plastic-spraying of the present invention obtains is not only beautiful but also has texture, disclosure satisfy that the use demand of more occasions, meanwhile, the oxidation resistance on aluminium alloy surface layer is greatly improved, the anti-corrosion effect having had, and does not pollute the environment.
Description
Technical field
The present invention relates to metal surface plastic-blasting technique, the surface plastic spraying technique of specifically a kind of aluminium alloy extrusions.
Background technology
Aluminium alloy is most widely used one kind non-ferrous metal structural material in industry, in Aeronautics and Astronautics, automobile, machinery
It has been widely applied in manufacture, ship and chemical industry.With the rapid development of science and technology and industrial economy, to aluminum alloy welding
The demand of binding component is increasing.Aluminium alloy density is low, but intensity is relatively high, and near or above high-quality steel, plasticity is good, can add
Work has excellent electric conductivity, thermal conductivity at various proximate matters.
Aluminium alloy extrusions, plank is a kind of widely used building and ornament materials, in order to prevent aluminium alloy extrusions, plank
Oxidation and the service life for extending aluminium alloy extrusions need to carry out plastic-spraying processing in aluminum alloy material surface, but due in plastic-spraying
Degreasing pickling is only simply carried out in pretreatment process, very strong adhesive force cannot be had by enabling aluminum alloy to surface, when use by
The erosion of the pollutions such as air, acid rain shortens the service life of aluminium, improves use cost along with penetrating for ultraviolet light.
Invention content
The purpose of the present invention is to provide a kind of strong adhesive force, the surface plastic spraying techniques of the aluminium alloy extrusions of safety and environmental protection.
To achieve the above object, the present invention provides the following technical solutions：
A kind of surface plastic spraying technique of aluminium alloy extrusions, includes the following steps,
(1) dedusting：The dust that the aluminium alloy section surface of plastic-spraying is treated with the compressed air of 0.5-0.6MPa is dusted processing；
(2) it deoils：Aluminium alloy extrusions after dedusting is put into the degreaser that temperature is 25-35 DEG C and is impregnated 2-3 minutes；
(3) it washes：Aluminium alloy type timber-used clear water after deoiling is rinsed well, and washing time is 2-3 minutes；Then in 45-55
20-30min is toasted at a temperature of DEG C；
(4) it is surface-treated：Aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and is impregnated 3-4 minutes；
(5) secondary washing：Aluminium alloy type timber-used clear water after surface treatment is rinsed well, washing time is 1-2 minutes；Then
20-30min is toasted at a temperature of 45-55 DEG C；
(6) primer spray：Primer base is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the bottom
The coating thickness of paint is 12-15mm；
(7) first time curing process：The aluminium alloy extrusions for having sprayed priming paint is placed in curing oven and is cured, solidification temperature is
80-150 DEG C, hardening time 15-20min；
(8) topcoating：Topcoat paint is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the face
The coating thickness of paint is 18-25mm；
(9) second of curing process：The aluminium alloy extrusions for having sprayed finishing coat is placed in curing oven and is cured, solidification temperature is
80-150 DEG C, hardening time 15-20min；
(10) finishing varnish is sprayed：Finishing varnish coating is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface,
The coating thickness of the finishing varnish is 8-12mm；
(11) third time curing process：The aluminium alloy extrusions for having sprayed finishing varnish is placed in curing oven and is cured, solidification temperature
It is 80-150 DEG C, hardening time 15-20min；
(12) detection, packaging and storage.
As a further solution of the present invention：Before dedusting, it is also necessary to test by branch to aluminium alloy extrusions, to pick
Except the aluminium alloy extrusions for having apparent deformation, bubble and coarse defect.
As a further solution of the present invention：The degreaser according to mass percentage concentration phosphoric acid 65-
75%, citric acid 8-12% and sodium nitrate 6-11%.
As a further solution of the present invention：The surface treatment liquid includes gathering inclined fluorine according to the raw material of mass percentage concentration
Ethylene 8-15%, sodium nitrate 0.5-1%, oxygroup vanadium trichloride 2-3%, citric acid 5-8%, hydrofluoric acid ammonium 2-3% and permanganic acid
Potassium 0.6-0.8%.
As a further solution of the present invention：The priming paint includes thermoplastic acrylic tree according to the raw material of hundred number of quality
45-60 parts of fat, 15-22 parts of ethyl acetate, 18-22 parts of the magnesium powder of 600-700 mesh, 4-7 parts of propylene glycol monopropyl ether and poly- diformazan
3-4 parts of radical siloxane.
As a further solution of the present invention：The finishing coat includes dimethylacetylamide according to the raw material of hundred number of quality
40-60 parts, 15-25 parts of titanium dioxide, 8-10 parts of polyurethane, 8-12 parts of butyl acetate, 1-3 parts of dimethyl silicone polymer and color
It is 5-10 parts plain.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention handled before plastic-spraying in after inspection, dedusting, deoiling, handled using chromium-free surface treatment liquid,
Enable aluminum alloy to surface generate one layer of safe and environmentally friendly protective film, not only increase coating and aluminum alloy surface binding force and
Anti-aging capability, and it is conducive to extend the service life of aluminium alloy enamelled coating；Priming, face are sprayed successively in the protection film surface
Paint, finishing varnish carry out curing process after one layer of spraying every time, enhance the adhesive force between every layer；Priming paint can improve coating
Impermeabilisation ability, strengthen the adhesive force between finishing coat and aluminum alloy surface, ensure that the flatness of topcoat and color are equal
Even property；Finishing coat protects erosion of the aluminum alloy surface from external environment, as air, acid rain, pollution erosion, while also preventing purple
Outside line penetrates, and greatly strengthens ageing resistance；Finishing varnish also improves the beauty of aluminum alloy surface while protective topcoat
Property and colorfulness.
The aluminium alloy section surface that plastic-spraying of the present invention obtains is not only beautiful but also has texture, disclosure satisfy that the use of more occasions needs
Ask, meanwhile, the oxidation resistance on aluminium alloy surface layer is greatly improved, have preferable anti-corrosion effect, strong adhesive force, no
Noxious material is will produce, it is free from environmental pollution.
Specific implementation mode
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of surface plastic spraying technique of aluminium alloy extrusions includes the following steps,
(1) it examines：Aluminium alloy extrusions examine by branch, to there is the proximate matter inspection of apparent deformation, bubble and coarse defect to make
Scrap processing；
(2) dedusting：The dust that the aluminium alloy section surface of plastic-spraying is treated with the compressed air of 0.6MPa is dusted processing；
(3) it deoils：Aluminium alloy extrusions after dedusting is put into the degreaser that temperature is 35 DEG C and is impregnated 3 minutes；Degreaser according to
Phosphoric acid 65%, citric acid 12% and the sodium nitrate 11% of mass percentage concentration；
(4) it washes：Aluminium alloy type timber-used clear water after deoiling is rinsed well, and washing time is 2 minutes；Then in 55 DEG C of temperature
Lower baking 20min；
(5) it is surface-treated：Aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and is impregnated 3 minutes；Surface treatment liquid according to
The raw material of mass percentage concentration includes Kynoar 11%, sodium nitrate 0.8%, oxygroup vanadium trichloride 2.5%, citric acid 7%,
Hydrofluoric acid ammonium 2.5% and potassium permanganate 0.7%；
(6) secondary washing：Aluminium alloy type timber-used clear water after surface treatment is rinsed well, washing time is 2 minutes；Then exist
30min is toasted at a temperature of 45 DEG C；
(7) primer spray：Primer base is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the bottom
The coating thickness of paint is 15mm；Priming paint includes 60 parts of thermoplastic acrylic resin, ethyl acetate according to the raw material of hundred number of quality
3 parts of 15 parts, 18 parts of the magnesium powder of 600-700 mesh, 4 parts of propylene glycol monopropyl ether and dimethyl silicone polymer；
(8) first time curing process：The aluminium alloy extrusions for having sprayed priming paint is placed in curing oven and is cured, solidification temperature is
150 DEG C, hardening time 15min；
(9) topcoating：Topcoat paint is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the face
The coating thickness of paint is 20mm；Finishing coat according to the raw material of hundred number of quality include 50 parts of dimethylacetylamide, 20 parts of titanium dioxide,
9 parts of 9 parts of polyurethane, 10 parts of butyl acetate, 2 parts of dimethyl silicone polymer and pigment；
(10) second of curing process：The aluminium alloy extrusions for having sprayed finishing coat is placed in curing oven and is cured, solidification temperature is
80 DEG C, hardening time 15min；
(11) finishing varnish is sprayed：Finishing varnish coating is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface,
The coating thickness of the finishing varnish is 8mm；
(12) third time curing process：The aluminium alloy extrusions for having sprayed finishing varnish is placed in curing oven and is cured, solidification temperature
It is 120 DEG C, hardening time 20min；
(13) detection, packaging and storage.
Embodiment 2
In the embodiment of the present invention, a kind of surface plastic spraying technique of aluminium alloy extrusions includes the following steps,
(1) it examines：Aluminium alloy extrusions examine by branch, to there is the proximate matter inspection of apparent deformation, bubble and coarse defect to make
Scrap processing；
(2) dedusting：The dust that the aluminium alloy section surface of plastic-spraying is treated with the compressed air of 0.5MPa is dusted processing；
(3) it deoils：Aluminium alloy extrusions after dedusting is put into the degreaser that temperature is 25 DEG C and is impregnated 2 minutes；Degreaser according to
Phosphoric acid 75%, citric acid 8% and the sodium nitrate 6% of mass percentage concentration；
(4) it washes：Aluminium alloy type timber-used clear water after deoiling is rinsed well, and washing time is 3 minutes；Then in 45 DEG C of temperature
Lower baking 30min；
(5) it is surface-treated：Aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and is impregnated 4 minutes；Surface treatment liquid according to
The raw material of mass percentage concentration includes Kynoar 15%, sodium nitrate 0.5%, oxygroup vanadium trichloride 3%, citric acid 5%, hydrogen
Fluoric acid ammonium 3% and potassium permanganate 0.6%；
(6) secondary washing：Aluminium alloy type timber-used clear water after surface treatment is rinsed well, washing time is 1 minute；Then exist
30min is toasted at a temperature of 45 DEG C；
(7) primer spray：Primer base is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the bottom
The coating thickness of paint is 12mm；Priming paint includes 50 parts of thermoplastic acrylic resin, ethyl acetate according to the raw material of hundred number of quality
4 parts of 20 parts, 20 parts of the magnesium powder of 600-700 mesh, 6 parts of propylene glycol monopropyl ether and dimethyl silicone polymer；
(8) first time curing process：The aluminium alloy extrusions for having sprayed priming paint is placed in curing oven and is cured, solidification temperature is
120 DEG C, hardening time 15min；
(9) topcoating：Topcoat paint is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the face
The coating thickness of paint is 20mm；Finishing coat according to the raw material of hundred number of quality include 40 parts of dimethylacetylamide, 25 parts of titanium dioxide,
10 parts of 10 parts of polyurethane, 12 parts of butyl acetate, 3 parts of dimethyl silicone polymer and pigment；
(10) second of curing process：The aluminium alloy extrusions for having sprayed finishing coat is placed in curing oven and is cured, solidification temperature is
120 DEG C, hardening time 15min；
(11) finishing varnish is sprayed：Finishing varnish coating is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface,
The coating thickness of the finishing varnish is 12mm；
(12) third time curing process：The aluminium alloy extrusions for having sprayed finishing varnish is placed in curing oven and is cured, solidification temperature
It is 150 DEG C, hardening time 15min；
(13) detection, packaging and storage.
Embodiment 3
In the embodiment of the present invention, a kind of surface plastic spraying technique of aluminium alloy extrusions includes the following steps,
(1) it examines：Aluminium alloy extrusions examine by branch, to there is the proximate matter inspection of apparent deformation, bubble and coarse defect to make
Scrap processing；
(2) dedusting：The dust that the aluminium alloy section surface of plastic-spraying is treated with the compressed air of 0.5MPa is dusted processing；
(3) it deoils：Aluminium alloy extrusions after dedusting is put into the degreaser that temperature is 35 DEG C and is impregnated 2 minutes；Degreaser according to
Phosphoric acid 70%, citric acid 10% and the sodium nitrate 8% of mass percentage concentration；
(4) it washes：Aluminium alloy type timber-used clear water after deoiling is rinsed well, and washing time is 3 minutes；Then in 45 DEG C of temperature
Lower baking 30min；
(5) it is surface-treated：Aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and is impregnated 3 minutes；Surface treatment liquid according to
The raw material of mass percentage concentration includes Kynoar 8%, sodium nitrate 1%, oxygroup vanadium trichloride 2%, citric acid 8%, hydrogen fluorine
Sour ammonium 2% and potassium permanganate 0.8%；
(6) secondary washing：Aluminium alloy type timber-used clear water after surface treatment is rinsed well, washing time is 2 minutes；Then exist
20min is toasted at a temperature of 55 DEG C；
(7) primer spray：Primer base is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the bottom
The coating thickness of paint is 13mm；Priming paint includes 45 parts of thermoplastic acrylic resin, ethyl acetate according to the raw material of hundred number of quality
4 parts of 22 parts, 22 parts of the magnesium powder of 600-700 mesh, 7 parts of propylene glycol monopropyl ether and dimethyl silicone polymer；
(8) first time curing process：The aluminium alloy extrusions for having sprayed priming paint is placed in curing oven and is cured, solidification temperature 80
DEG C, hardening time 20min；
(9) topcoating：Topcoat paint is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the face
The coating thickness of paint is 18mm；Finishing coat according to the raw material of hundred number of quality include 60 parts of dimethylacetylamide, 18 parts of titanium dioxide,
5 parts of 8 parts of polyurethane, 8 parts of butyl acetate, 1 part of dimethyl silicone polymer and pigment；
(10) second of curing process：The aluminium alloy extrusions for having sprayed finishing coat is placed in curing oven and is cured, solidification temperature is
120 DEG C, hardening time 15min；
(11) finishing varnish is sprayed：Finishing varnish coating is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface,
The coating thickness of the finishing varnish is 12mm；
(12) third time curing process：The aluminium alloy extrusions for having sprayed finishing varnish is placed in curing oven and is cured, solidification temperature
It is 150 DEG C, hardening time 15min；
(13) detection, packaging and storage.
The aluminium alloy section surface that plastic-spraying of the present invention obtains is not only beautiful but also has texture, disclosure satisfy that the use of more occasions needs
Ask, meanwhile, the oxidation resistance on aluminium alloy surface layer is greatly improved, have preferable anti-corrosion effect, strong adhesive force, no
Noxious material is will produce, it is free from environmental pollution.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (6)
1. a kind of surface plastic spraying technique of aluminium alloy extrusions, which is characterized in that include the following steps,
(1) dedusting：The dust that the aluminium alloy section surface of plastic-spraying is treated with the compressed air of 0.5-0.6MPa is dusted processing；
(2) it deoils：Aluminium alloy extrusions after dedusting is put into the degreaser that temperature is 25-35 DEG C and is impregnated 2-3 minutes；
(3) it washes：Aluminium alloy type timber-used clear water after deoiling is rinsed well, and washing time is 2-3 minutes；Then in 45-55
20-30min is toasted at a temperature of DEG C；
(4) it is surface-treated：Aluminium alloy extrusions after cleaning is immersed in surface treatment liquid and is impregnated 3-4 minutes；
(5) secondary washing：Aluminium alloy type timber-used clear water after surface treatment is rinsed well, washing time is 1-2 minutes；Then
20-30min is toasted at a temperature of 45-55 DEG C；
(6) primer spray：Primer base is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the bottom
The coating thickness of paint is 12-15mm；
(7) first time curing process：The aluminium alloy extrusions for having sprayed priming paint is placed in curing oven and is cured, solidification temperature is
80-150 DEG C, hardening time 15-20min；
(8) topcoating：Topcoat paint is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface, the face
The coating thickness of paint is 18-25mm；
(9) second of curing process：The aluminium alloy extrusions for having sprayed finishing coat is placed in curing oven and is cured, solidification temperature is
80-150 DEG C, hardening time 15-20min；
(10) finishing varnish is sprayed：Finishing varnish coating is sprayed on using electrostatic power spraying apparatus and waits for plastic-spraying aluminium alloy section surface,
The coating thickness of the finishing varnish is 8-12mm；
(11) third time curing process：The aluminium alloy extrusions for having sprayed finishing varnish is placed in curing oven and is cured, solidification temperature
It is 80-150 DEG C, hardening time 15-20min；
(12) detection, packaging and storage.
2. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, which is characterized in that before dedusting, also need
To test by branch to aluminium alloy extrusions, with reject have apparent deformation, bubble and coarse defect aluminium alloy extrusions.
3. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, which is characterized in that the degreaser is according to matter
Measure phosphoric acid 65-75%, citric acid 8-12% and the sodium nitrate 6-11% of percentage concentration.
4. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, which is characterized in that the surface treatment liquid is pressed
Raw material according to mass percentage concentration includes Kynoar 8-15%, sodium nitrate 0.5-1%, oxygroup vanadium trichloride 2-3%, lemon
Sour 5-8%, hydrofluoric acid ammonium 2-3% and potassium permanganate 0.6-0.8%.
5. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, which is characterized in that the priming paint is according to quality
The raw material of hundred numbers includes the magnesium powder 18-22 of 45-60 parts of thermoplastic acrylic resin, 15-22 parts of ethyl acetate, 600-700 mesh
3-4 parts of part, 4-7 parts of propylene glycol monopropyl ether and dimethyl silicone polymer.
6. the surface plastic spraying technique of aluminium alloy extrusions according to claim 1, which is characterized in that the finishing coat is according to quality
The raw material of hundred numbers includes 40-60 parts of dimethylacetylamide, 15-25 parts of titanium dioxide, 8-10 parts of polyurethane, butyl acetate 8-
5-10 parts of 12 parts, 1-3 parts of dimethyl silicone polymer and pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100770.9A CN108607797A (en) | 2016-12-05 | 2016-12-05 | A kind of surface plastic spraying technique of aluminium alloy extrusions |
Applications Claiming Priority (1)
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| CN201611100770.9A CN108607797A (en) | 2016-12-05 | 2016-12-05 | A kind of surface plastic spraying technique of aluminium alloy extrusions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114377926A (en) * | 2021-12-13 | 2022-04-22 | 河南海螺嵩基新材料有限公司 | Powder electrostatic spraying pretreatment process |
| CN115156006A (en) * | 2022-07-13 | 2022-10-11 | 武汉创新艺建筑装饰工程有限公司 | Guardrail surface plastic spraying process |
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2016
- 2016-12-05 CN CN201611100770.9A patent/CN108607797A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114377926A (en) * | 2021-12-13 | 2022-04-22 | 河南海螺嵩基新材料有限公司 | Powder electrostatic spraying pretreatment process |
| CN115156006A (en) * | 2022-07-13 | 2022-10-11 | 武汉创新艺建筑装饰工程有限公司 | Guardrail surface plastic spraying process |
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