CN113289874A - Coating method for surface coating of anti-corrosion aluminum forging - Google Patents

Coating method for surface coating of anti-corrosion aluminum forging Download PDF

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Publication number
CN113289874A
CN113289874A CN202110461342.3A CN202110461342A CN113289874A CN 113289874 A CN113289874 A CN 113289874A CN 202110461342 A CN202110461342 A CN 202110461342A CN 113289874 A CN113289874 A CN 113289874A
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China
Prior art keywords
parts
coating
primer
aluminum forging
finish paint
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Pending
Application number
CN202110461342.3A
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Chinese (zh)
Inventor
高维荣
常焜
方帆
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Jiangsu Tiebao Forging Co ltd
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Jiangsu Tiebao Forging Co ltd
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Priority to CN202110461342.3A priority Critical patent/CN113289874A/en
Publication of CN113289874A publication Critical patent/CN113289874A/en
Pending legal-status Critical Current

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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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • 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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/061—Special surface effect
    • 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
    • B05D7/24—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 for applying particular liquids or other fluent materials
    • 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
    • C09D133/04—Homopolymers or copolymers of esters
    • 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
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/002—Priming paints
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C09D5/10—Anti-corrosive paints containing metal dust
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • 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
    • 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
    • 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
    • B05D2601/00—Inorganic fillers
    • B05D2601/20—Inorganic fillers used for non-pigmentation effect
    • 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
    • B05D2601/28—Metals
    • 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
    • B05D2602/00—Organic fillers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/10—Transparent films; Clear coatings; Transparent materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention discloses a coating method of a surface coating of an anticorrosive aluminum forging, which comprises the following steps: (1) surface pretreatment of the forging: polishing the aluminum forging, putting the aluminum forging into clean water for cleaning, and then drying; (2) preparing a coating primer and a finish with high corrosion resistance and transparency; (3) coating a primer in an electrophoresis mode, and then baking at a low temperature; (4) finely polishing, putting into clear water for ultrasonic cleaning, and then drying; (5) spraying finish paint, and ventilating and drying. The primer adopts an electrophoresis mode, so that the coating is more uniform and stronger in adhesive force, and the coating is more difficult to fall off; the finish paint and the primer are made of organic materials with high transparency, so that the finish paint is more environment-friendly, the protective performance is enhanced by adopting a double-layer coating, the protective effect of the coating is enhanced by adopting the finish paint made of organic coating inorganic materials, and the manufacturing cost of the finish paint is also reduced.

Description

Coating method for surface coating of anti-corrosion aluminum forging
Technical Field
The invention relates to the technical field of low-temperature anticorrosive processing of aluminum materials, in particular to a coating method for a surface coating of an anticorrosive aluminum forging.
Background
The aluminum forging has the advantages of small density, high specific strength, good welding performance, easy processing and beautiful surface, and is widely applied to the fields of aerospace, food packaging, architectural decoration, electronic home appliances, transportation and the like. In the prior art, the surface protective film of the aluminum forging has poor temperature resistance and corrosion resistance, the formed coating has small thickness and low adhesion with the surface of aluminum alloy, the coating is easy to fall off in a corrosive medium, and the coating has low transparency.
Disclosure of Invention
The invention aims to solve the problems that: the method for coating the surface coating of the anti-corrosion aluminum forging can improve the anti-corrosion effect of the surface of the aluminum forging, the coating is not easy to fall off in a corrosion medium, and the coating is higher in transparency.
In order to achieve the above purpose, the invention is realized by the following technical scheme.
The coating method of the surface coating of the anti-corrosion aluminum forging is characterized by comprising the following steps:
(1) surface pretreatment of the forging: polishing the aluminum forging, putting the aluminum forging into clean water for cleaning, and then drying;
(2) preparing a coating primer and a finishing coat: the primer is prepared from the following components in parts by weight: 45-50 parts of aliphatic polyolefin epoxy resin, 20-30 parts of butyl acrylate, 10-12 parts of silicone oil, 5-10 parts of diethylene glycol hexyl ether, 10-12 parts of isopropanol, 3-6 parts of a silane coupling agent, 3-5 parts of composite alcohol ether, 10-15 parts of isopropanol and 5-10 parts of silicone fluid;
the finish paint is prepared from the following components in parts by weight: 40-50 parts of acrylic emulsion, 15-20 parts of organic silicon acrylate emulsion, 10-15 parts of urea-formaldehyde resin, 15-20 parts of zinc phosphate, 3-5 parts of magnesium powder, 3-5 parts of benzyl trimethyl ammonium bromide, 8-10 parts of hydroquinone diacetate, 2-4 parts of compound alcohol ether, 5-8 parts of silica gel liquid, 12-15 parts of isopropanol and 3-5 parts of ethylene glycol monomethyl ether.
(3) Coating a primer in an electrophoresis mode, and then baking at a low temperature;
(4) finely polishing, putting into clear water for ultrasonic cleaning, and then drying;
(5) spraying finish paint, and ventilating and drying.
Further, the step (1) is specifically that the raw materials are put into clear water for ultrasonic cleaning for 30-60min and then dried at 50-60 ℃.
Further, the step (3) is specifically that the electrophoresis temperature is controlled below 110 ℃, the baking temperature is controlled below 130 ℃, and the drying time is 1-2 hours.
Further, the sanding roughness of step (4) is less than sanding roughness 1/3 of step (1).
Further, the step (5) is to spray finish paint for 2 times, wherein the spraying time interval is 20-30 min.
The invention has the beneficial effects that: 1. the primer adopts an electrophoresis mode, so that the coating is more uniform and stronger in adhesive force, and the coating is more difficult to fall off; 2. the finish paint and the primer are made of organic materials with high transparency, so that the finish paint is more environment-friendly, the protective performance is enhanced by adopting a double-layer coating, and 3, the finish paint is made of organic coating inorganic materials, so that the protective effect of the coating is enhanced, and the manufacturing cost of the finish paint is also reduced.
Detailed Description
The invention is further illustrated below with reference to specific examples.
Example 1: the coating method of the surface coating of the anti-corrosion aluminum forging comprises the following steps:
(1) surface pretreatment of the forging: polishing the aluminum forging, putting the aluminum forging into clear water for ultrasonic cleaning for 30min, and then drying at 50 ℃.
(2) Preparing a coating primer and a finishing coat: the primer is prepared from the following components in parts by weight: 45 parts of aliphatic polyolefin epoxy resin, 20 parts of butyl acrylate, 10 parts of silicone oil, 5 parts of diethylene glycol hexyl ether, 10 parts of isopropanol, 3 parts of a silane coupling agent, 3 parts of composite alcohol ether, 10 parts of isopropanol and 5 parts of silica gel liquid.
The finish paint is prepared from the following components in parts by weight: 40 parts of acrylic emulsion, 15 parts of organic silicon acrylate emulsion, 10 parts of urea-formaldehyde resin, 15 parts of zinc phosphate, 3 parts of magnesium powder, 3 parts of benzyl trimethyl ammonium bromide, 8 parts of hydroquinone diacetate, 2 parts of compound alcohol ether, 5 parts of silica gel liquid, 12 parts of isopropanol and 3 parts of ethylene glycol methyl ether.
(3) Coating a primer by adopting an electrophoresis mode, and then baking at a low temperature, wherein the electrophoresis temperature is controlled to be about 105 ℃, the baking temperature is controlled to be 120 ℃, and the baking time is 2 hours.
(4) Finely polishing, putting the polished wafer into clear water for ultrasonic cleaning, and then drying the polished wafer to a polishing roughness 1/4 of the step (1);
(5) and spraying finish paint for 2 times at 20min intervals, and carrying out ventilation drying to finish coating.
Example 2: the coating method of the surface coating of the anti-corrosion aluminum forging comprises the following steps:
(1) surface pretreatment of the forging: polishing the aluminum forging, putting the aluminum forging into clear water for ultrasonic cleaning for 60min, and then drying at 60 ℃.
(2) Preparing a coating primer and a finishing coat: the primer is prepared from the following components in parts by weight: 50 parts of aliphatic polyolefin epoxy resin, 30 parts of butyl acrylate, 12 parts of silicone oil, 10 parts of diethylene glycol hexyl ether, 12 parts of isopropanol, 6 parts of a silane coupling agent, 5 parts of composite alcohol ether, 15 parts of isopropanol and 10 parts of silica gel liquid.
The finish paint is prepared from the following components in parts by weight: 50 parts of acrylic emulsion, 20 parts of organic silicon acrylate emulsion, 15 parts of urea-formaldehyde resin, 20 parts of zinc phosphate, 5 parts of magnesium powder, 5 parts of benzyl trimethyl ammonium bromide, 10 parts of hydroquinone diacetate, 4 parts of compound alcohol ether, 8 parts of silica gel liquid, 15 parts of isopropanol and 5 parts of ethylene glycol methyl ether.
(3) Coating a primer by adopting an electrophoresis mode, and then baking at a low temperature, wherein the electrophoresis temperature is controlled to be about 100 ℃, the baking temperature is controlled to be 125 ℃, and the baking time is 1 hour.
(4) Finely polishing, putting the polished wafer into clear water for ultrasonic cleaning, and then drying the polished wafer to a polishing roughness 1/5 of the step (1);
(5) and spraying finish paint for 2 times at an interval of 30min, and carrying out ventilation drying to finish coating.
Example 3: the coating method of the surface coating of the anti-corrosion aluminum forging comprises the following steps:
(1) surface pretreatment of the forging: polishing the aluminum forging, putting the aluminum forging into clean water for ultrasonic cleaning for 45min, and then drying at 55 ℃.
(2) Preparing a coating primer and a finishing coat: the primer is prepared from the following components in parts by weight: 47 parts of aliphatic polyolefin epoxy resin, 15 parts of butyl acrylate, 11 parts of silicone oil, 7 parts of diethylene glycol hexyl ether, 11 parts of isopropanol, 4 parts of a silane coupling agent, 4 parts of composite alcohol ether, 12 parts of isopropanol and 7 parts of silica gel liquid.
The finish paint is prepared from the following components in parts by weight: 45 parts of acrylic emulsion, 17 parts of organic silicon acrylate emulsion, 12 parts of urea-formaldehyde resin, 17 parts of zinc phosphate, 4 parts of magnesium powder, 4 parts of benzyl trimethyl ammonium bromide, 9 parts of hydroquinone diacetate, 3 parts of compound alcohol ether, 7 parts of silica gel liquid, 13 parts of isopropanol and 4 parts of ethylene glycol methyl ether.
(3) Coating a primer by adopting an electrophoresis mode, and then baking at a low temperature, wherein the electrophoresis temperature is controlled below 103 ℃, the baking temperature is controlled at 122 ℃, and the baking time is 1.5 hours.
(4) Finely polishing, putting the polished wafer into clear water for ultrasonic cleaning, and then drying the polished wafer to a degree that the polishing roughness is smaller than the polishing roughness 1/4 in the step (1);
(5) and spraying finish paint for 2 times at an interval of 25min, and carrying out ventilation drying to finish coating.
The above embodiments are merely preferred embodiments of the present invention, which are intended to be illustrative and not limiting, and any changes, substitutions, combinations, simplifications, modifications, etc. made by those skilled in the art without departing from the spirit and principle of the present invention shall be included in the scope of the present invention.

Claims (5)

1. The coating method of the surface coating of the anti-corrosion aluminum forging is characterized by comprising the following steps:
(1) surface pretreatment of the forging: polishing the aluminum forging, putting the aluminum forging into clean water for cleaning, and then drying;
(2) preparing a coating primer and a finishing coat: the primer is prepared from the following components in parts by weight: 45-50 parts of aliphatic polyolefin epoxy resin, 20-30 parts of butyl acrylate, 10-12 parts of silicone oil, 5-10 parts of diethylene glycol hexyl ether, 10-12 parts of isopropanol, 3-6 parts of a silane coupling agent, 3-5 parts of composite alcohol ether, 10-15 parts of isopropanol and 5-10 parts of silicone fluid;
the finish paint is prepared from the following components in parts by weight: 40-50 parts of acrylic emulsion, 15-20 parts of organic silicon acrylate emulsion, 10-15 parts of urea-formaldehyde resin, 15-20 parts of zinc phosphate, 3-5 parts of magnesium powder, 3-5 parts of benzyl trimethyl ammonium bromide, 8-10 parts of hydroquinone diacetate, 2-4 parts of compound alcohol ether, 5-8 parts of silica gel liquid, 12-15 parts of isopropanol and 3-5 parts of ethylene glycol monomethyl ether;
(3) coating a primer in an electrophoresis mode, and then baking at a low temperature;
(4) finely polishing, putting into clear water for ultrasonic cleaning, and then drying;
(5) spraying finish paint, and ventilating and drying.
2. The method for coating the surface of the anti-corrosion aluminum forging according to claim 1, wherein the method comprises the following steps: the step (1) is specifically that clear water is put into the mixture for ultrasonic cleaning for 30-60min, and then the mixture is dried at 50-60 ℃.
3. The method for coating the surface of the anti-corrosion aluminum forging according to claim 1, wherein the method comprises the following steps: the step (3) is specifically that the electrophoresis temperature is controlled below 110 ℃, the baking temperature is controlled below 130 ℃, and the drying time is 1-2 hours.
4. The method for coating the surface of the anti-corrosion aluminum forging according to claim 1, wherein the method comprises the following steps: the grinding roughness of the step (4) is less than the grinding roughness 1/3 of the step (1).
5. The method for coating the surface of the anti-corrosion aluminum forging according to claim 1, wherein the method comprises the following steps: and the step (5) is to spray finish paint for 2 times, wherein the spraying time interval is 20-30 min.
CN202110461342.3A 2021-04-27 2021-04-27 Coating method for surface coating of anti-corrosion aluminum forging Pending CN113289874A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116273780A (en) * 2023-02-09 2023-06-23 环讯精密制品(南通)有限公司 Coating method of ceramic coating with high adhesive force and high wear resistance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116273780A (en) * 2023-02-09 2023-06-23 环讯精密制品(南通)有限公司 Coating method of ceramic coating with high adhesive force and high wear resistance

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