CN112760695A - Processing technology of aluminum alloy stretching shell - Google Patents

Processing technology of aluminum alloy stretching shell Download PDF

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Publication number
CN112760695A
CN112760695A CN202011582953.5A CN202011582953A CN112760695A CN 112760695 A CN112760695 A CN 112760695A CN 202011582953 A CN202011582953 A CN 202011582953A CN 112760695 A CN112760695 A CN 112760695A
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CN
China
Prior art keywords
electrophoresis
aluminum alloy
product
paint
baking
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
CN202011582953.5A
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Chinese (zh)
Inventor
朱金波
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Shenzhen Yuge Metal Prodcuts Co ltd
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Shenzhen Yuge Metal Prodcuts Co ltd
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Application filed by Shenzhen Yuge Metal Prodcuts Co ltd filed Critical Shenzhen Yuge Metal Prodcuts Co ltd
Priority to CN202011582953.5A priority Critical patent/CN112760695A/en
Publication of CN112760695A publication Critical patent/CN112760695A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • B05D3/06—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 exposure to radiation
    • B05D3/061—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 exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • 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
    • B05D7/16—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 using synthetic lacquers or varnishes
    • 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
    • B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • 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
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
    • 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
    • C25D13/20—Pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/241—Chemical after-treatment on the surface
    • B22F2003/242—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface

Abstract

The invention provides a processing technology of an aluminum alloy stretching shell. Belongs to the technical field of aluminum alloy processing, and relates to a processing technology of an aluminum alloy stretching shell. The process comprises the following steps: preparing materials, forming products, polishing, electrophoresis, baking finish, highlight and oxidation. Compared with the prior art, the invention has the following advantages and effects: firstly, the process adds an electrophoresis procedure, a layer of uniform and continuous bottom coating is formed on the surface and inside of the product through electrophoresis, and then the baking finish is carried out, so that the defects of bare substrate of the product and difficult adsorption of the baking finish in the traditional baking finish procedure are overcome; secondly, baking finish is carried out after electrophoresis priming, so that the baking finish and the electrophoresis priming film are more closely adsorbed, and no side paint and paint falling exist during highlight, thereby solving the defect of highlight paint falling after traditional baking finish parts are baked; and finally, forming a bottom layer protective paint after electrophoresis through electrophoresis, baking finish, oxidation and electrophoresis, and solving the problems of oxidation cross color and chromatic aberration after the traditional baking finish.

Description

Processing technology of aluminum alloy stretching shell
Technical Field
The invention belongs to the technical field of aluminum alloy processing, and relates to a processing technology of an aluminum alloy stretching shell.
Background
Aluminum alloy is an alloy based on aluminum with a certain amount of other alloying elements added, and is one of light metal materials. In addition to the general characteristics of aluminum, aluminum alloys have certain alloy specific characteristics due to the variety and amount of alloying elements added. The aluminum alloy has the density of 2.63-2.85 g/cm, higher strength (sigma b of 110-650 MPa), specific strength close to that of high alloy steel, specific stiffness higher than that of steel, good casting performance and plastic processing performance, good electric conductivity and heat conductivity, good corrosion resistance and weldability, can be used as a structural material, and has wide application in aerospace, aviation, transportation, construction, electromechanics, lightening and daily necessities. In the aluminum alloy processing process, a layer of baking varnish protective film is sprayed outside the aluminum alloy, but the existing processing technology often has the problems of exposed substrate of baking varnish, high gloss paint falling and color cross oxidation, and the processing quality of the aluminum alloy is seriously influenced.
Disclosure of Invention
In order to solve the above problems, the primary object of the present invention is to provide a process for processing an aluminum alloy stretch shell, which does not expose the substrate during baking finish and is more easily absorbed during baking finish.
The invention further aims to provide a processing technology of the aluminum alloy stretching shell, which solves the problem of high gloss paint removal after the traditional paint baking piece is baked.
The final purpose of the invention is to provide a processing technology of an aluminum alloy stretching shell, which solves the problems of oxidation cross color and color difference after traditional paint baking.
In order to achieve the above object, the present invention has the following technical means.
The invention provides a processing technology of an aluminum alloy stretching shell, which comprises the following steps:
s1: preparing materials: weighing raw materials in a certain proportion, and adding the raw materials into a stirrer for powder mixing;
s2: and (3) product molding: putting the raw material mixed with the powder in the step S1 into a punching machine for film pressing and forming, putting the product subjected to film pressing and forming into a manual punching machine for edge cutting and shaping, and removing redundant parts in the product;
s3: polishing: polishing the product molded in the step S2;
s4: electrophoresis: performing electrophoresis on the product subjected to polishing and forming in the step S3;
s5: baking varnish: placing the product subjected to the electrophoresis of the S4 on a paint spraying line body for baking paint;
s6: highlight: putting the product subjected to the baking finish in the S5 into a clamp, putting the clamp into an engraving and milling machine, and performing highlight processing by using a highlight cutter;
s7: and (3) oxidation: and (5) oxidizing the product with high light in the S6, and performing finished product full inspection after the oxidation is completed.
Further, the raw materials in the S1 are 1070 aluminum particles and stretched aluminum powder; the stirring time is 15 minutes, and the mixture is filled into a rubber bag after the stirring is finished.
Furthermore, the number of times of pressing film forming in S2 is two, and the pressing film forming for two times is respectively rough blank forming and arc forming, and the arc forming is arranged after the rough blank forming.
Further, the rough blank is formed into: and (4) placing the aluminum particles mixed with the powder in the S1 at the die limit position of the punching machine, brushing oil on the punching head of the punching machine, and starting the punching machine to perform film pressing and shaping.
Further, the arc is shaped as: and (3) sleeving the product formed by the rough blank into a die for positioning, pressing the product downwards until the product reaches the bottom, and starting a punching machine for film pressing and shaping.
Further, the S2 trimming is: the method comprises the steps of firstly adjusting the position of a flash mold core to ensure the length of a product after flash, then clamping the product on the flash mold core, firstly pressing by gravity, then slowly pushing until the product is subjected to large resistance, namely the flash is in place, then pulling out, and finishing the flash.
Further, the shaping in S2 is: clamping the shaping jig on a manual punching machine, adjusting the position, adjusting the limit, slightly pressing the mouth part, and adjusting the size of the mouth part to enable the size of the mouth part to reach the tolerance range.
Further, the polishing process in S3 sequentially includes: rough polishing, CNC machining and fine polishing.
Further, the rough polishing is as follows: and (4) putting the shaped product of S2 on a polishing machine, and polishing the outer circle part of the product by a cloth wheel until the surface of the product is smooth.
Further, the CNC machining is: the device adjusts the clamp, places the product on the clamp for fixing, adjusts the processing program of the CNC machine table, and uses the milling cutter to process the part of the product to be processed.
Further, the fine polishing comprises the following steps: and putting the CNC processed product into a polishing machine for polishing until the product is smooth.
Further, the electrophoresis step in S4 includes: s41: ultrasonically cleaning paraffin oil for 1 minute;
s42: activating for 1 minute in acid;
s43: acid film and scale removal is carried out for 1 minute;
s44: passivating for 1 minute;
s45: surface conditioning for 1 minute;
s46: washing with water;
s47: electrophoresis is carried out for 1 minute;
s48: dehydrating for 1 minute;
s49: pre-drying for 15 minutes;
s410: high temperature curing for 50 minutes.
Further, the electrophoretic liquid of the electrophoresis is a mixture of water-based acrylic resin and color paste;
further, the pre-drying mode is tunnel pipe drying;
furthermore, the surface treatment is to carry out incomplete procedures in the procedures of cleaning, acid activation, acid film removal and descaling and passivation once again.
Further, the baking finish procedure in S5 includes three times of oil-spraying baking finishes, where the three times of oil-spraying baking finishes are respectively: prime white, pearl white, UV; the paint is dried after each paint baking.
Further, the base white comprises the following raw materials in proportion: 10 parts of paint, 1.5 parts of curing agent and 7-10 parts of diluent, wherein the baking varnish temperature of priming white is 70-80 ℃, and the baking varnish time is 20 minutes.
Further, the raw material ratio of the pearl white is as follows: 10 parts of paint, 1.5 parts of curing agent and 10-12 parts of diluent, wherein the temperature of pearlescent white baking varnish is 70-80 ℃, and the baking varnish time is 20 minutes.
Further, the UV comprises the following raw materials in proportion: 10 parts of UV gloss oil and 2 parts of diluent. And (4) drying the UV oil-spraying baking varnish by adopting an ultraviolet ray cover.
Further, the oxidation process comprises hanging, conductivity testing, alkaline degreasing, anodic oxidation coating, coloring, sealing protection and drying.
Further, the temperature of the alkaline degreasing is 90 ℃ and the time is 2 minutes.
Further, the anodic oxidation solution of the anodic oxidation coating is sulfuric acid, and the anodic oxidation time is 10 minutes.
Further, the drying temperature in the oxidation process is 80 ℃ and the drying time is 8 minutes.
Compared with the prior art, the invention has the advantages and effects that: firstly, the process adds an electrophoresis procedure, a layer of uniform and continuous bottom coating is formed on the surface and inside of the product through electrophoresis, and then the baking finish is carried out, so that the defects of bare substrate of the product and difficult adsorption of the baking finish in the traditional baking finish procedure are overcome; secondly, baking finish is carried out after electrophoresis priming, so that the baking finish and the electrophoresis priming film are more closely adsorbed, and no side paint and paint falling exist during highlight, thereby solving the defect of highlight paint falling after traditional baking finish parts are baked; and finally, forming a bottom layer protective paint after electrophoresis through electrophoresis, baking finish, oxidation and electrophoresis, and solving the problems of oxidation cross color and chromatic aberration after the traditional baking finish.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to achieve the above object, the technical solution of the present invention is as follows.
The invention provides a processing technology of an aluminum alloy stretching shell, which comprises the following steps:
s1: preparing materials: weighing raw materials in a certain proportion, and adding the raw materials into a stirrer for powder mixing;
s2: and (3) product molding: putting the raw material mixed with the powder in the step S1 into a punching machine for film pressing and forming, putting the product subjected to film pressing and forming into a manual punching machine for edge cutting and shaping, and removing redundant parts in the product;
s3: polishing: polishing the product molded in the step S2;
s4: electrophoresis: performing electrophoresis on the product subjected to polishing and forming in the step S3;
s5: baking varnish: placing the product subjected to the electrophoresis of the S4 on a paint spraying line body for baking paint;
s6: highlight: putting the product subjected to the baking finish in the S5 into a clamp, putting the clamp into an engraving and milling machine, and performing highlight processing by using a highlight cutter;
s7: and (3) oxidation: and (5) oxidizing the product with high light in the S6, and performing finished product full inspection after the oxidation is completed.
In the present example, the raw material in S1 is 1070 aluminum particles and stretched aluminum powder; the stirring time is 15 minutes, and the mixture is filled into a rubber bag after the stirring is finished.
In this example, the number of times of the pressing molding in S2 is two, and the two pressing molding is the rough blank molding and the circular arc molding, which are respectively provided after the rough blank molding.
In this example, the blank is shaped into: and (4) placing the aluminum particles mixed with the powder in the S1 at the die limit position of the punching machine, brushing oil on the punching head of the punching machine, and starting the punching machine to perform film pressing and shaping.
In this example, the arc is shaped as: and (3) sleeving the product formed by the rough blank into a die for positioning, pressing the product downwards until the product reaches the bottom, and starting a punching machine for film pressing and shaping.
In this example, the S2 cut edge is: the method comprises the steps of firstly adjusting the position of a flash mold core to ensure the length of a product after flash, then clamping the product on the flash mold core, firstly pressing by gravity, then slowly pushing until the product is subjected to large resistance, namely the flash is in place, then pulling out, and finishing the flash.
In this example, the shaping in S2 is: clamping the shaping jig on a manual punching machine, adjusting the position, adjusting the limit, slightly pressing the mouth part, and adjusting the size of the mouth part to enable the size of the mouth part to reach the tolerance range.
In this example, the polishing process in S3 sequentially includes: rough polishing, CNC machining and fine polishing.
In this example, the rough polishing is: and (4) putting the shaped product of S2 on a polishing machine, and polishing the outer circle part of the product by a cloth wheel until the surface of the product is smooth.
In this example, the CNC machining is: the device adjusts the clamp, places the product on the clamp for fixing, adjusts the processing program of the CNC machine table, and uses the milling cutter to process the part of the product to be processed.
In this example, the fine polishing is: and putting the CNC processed product into a polishing machine for polishing until the product is smooth.
In this example, the electrophoresis process in S4 includes:
s41: ultrasonically cleaning paraffin oil for 1 minute;
s42: activating for 1 minute in acid;
s43: acid film and scale removal is carried out for 1 minute;
s44: passivating for 1 minute;
s45: surface conditioning for 1 minute;
s46: washing with water;
s47: electrophoresis is carried out for 1 minute;
s48: dehydrating for 1 minute;
s49: pre-drying for 15 minutes;
s410: high temperature curing for 50 minutes.
In the example, the electrophoretic fluid of the electrophoresis is a mixture of aqueous acrylic resin and color paste;
in this example, the drying manner of the pre-drying is tunnel tube drying;
in the example, the surface treatment is carried out once again by incomplete procedures of cleaning, acid activation, acid film removal and descaling and passivation.
In this example, the baking finish procedure in S5 includes three oil-spraying baking finishes, which are: prime white, pearl white, UV; the paint is dried after each paint baking.
In this example, the mixture ratio of the raw materials of the base white is as follows: 10 parts of paint, 1.5 parts of curing agent and 7-10 parts of diluent, wherein the baking varnish temperature of priming white is 70-80 ℃, and the baking varnish time is 20 minutes.
In this example, the raw material ratio of the pearlescent white is as follows: 10 parts of paint, 1.5 parts of curing agent and 10-12 parts of diluent, wherein the temperature of pearlescent white baking varnish is 70-80 ℃, and the baking varnish time is 20 minutes.
In this example, the UV raw material ratio is: 10 parts of UV gloss oil and 2 parts of diluent. And (4) drying the UV oil-spraying baking varnish by adopting an ultraviolet ray cover.
In the present example, the oxidation process includes hanging, conductivity testing, alkaline degreasing, anodic oxidation coating, coloring, sealing protection, and drying.
In this example, the temperature of the alkaline degreasing is 90 ℃ and the time is 2 minutes.
In this example, the anodizing solution of the anodized coating was sulfuric acid, and the anodizing time was 10 minutes.
In this example, the temperature for drying in the oxidation process was 80 ℃ for 8 minutes.
The above embodiments are only for illustrating the present invention, and the scope of the present invention is not limited to the above embodiments. The objectives of the present invention can be achieved by the ordinary skilled person in the art according to the disclosure of the present invention and the ranges of the parameters.

Claims (10)

1. The processing technology of the aluminum alloy stretching shell is characterized by comprising the following steps of:
s1: preparing materials: weighing raw materials in a certain proportion, and adding the raw materials into a stirrer for powder mixing;
s2: and (3) product molding: putting the raw material mixed with the powder in the step S1 into a punching machine for film pressing and forming, putting the product subjected to film pressing and forming into a manual punching machine for edge cutting and shaping, and removing redundant parts in the product;
s3: polishing: polishing the product molded in the step S2;
s4: electrophoresis: performing electrophoresis on the product subjected to polishing and forming in the step S3;
s5: baking varnish: placing the product subjected to the electrophoresis of the S4 on a paint spraying line body for baking paint;
s6: highlight: putting the product subjected to the baking finish in the S5 into a clamp, putting the clamp into an engraving and milling machine, and performing highlight processing by using a highlight cutter;
s7: and (3) oxidation: and (5) oxidizing the product with high light in the S6, and performing finished product full inspection after the oxidation is completed.
2. The process for manufacturing an aluminum alloy stretching shell as recited in claim 1, wherein the raw material in S1 is 1070 aluminum particles, stretching aluminum powder; the stirring time is 15 minutes, and the mixture is filled into a rubber bag after the stirring is finished.
3. The processing technology of the aluminum alloy stretching shell as recited in claim 1, wherein the number of the pressing film forming in the step S2 is two, the two pressing film forming are rough blank forming and arc forming, respectively, and the arc forming is arranged after the rough blank forming.
4. The process for manufacturing an aluminum alloy stretching shell as recited in claim 1, wherein the polishing process in S3 comprises the following steps in sequence: rough polishing, CNC machining and fine polishing.
5. The process for manufacturing an aluminum alloy stretching shell as recited in claim 1, wherein the electrophoresis step in S4 includes:
s41: ultrasonically cleaning paraffin oil for 1 minute;
s42: activating for 1 minute in acid;
s43: acid film and scale removal is carried out for 1 minute;
s44: passivating for 1 minute;
s45: surface conditioning for 1 minute;
s46: washing with water;
s47: electrophoresis is carried out for 1 minute;
s48: dehydrating for 1 minute;
s49: pre-drying for 15 minutes;
s410: high temperature curing for 50 minutes.
6. The processing technology of the aluminum alloy stretching shell as recited in claim 1, wherein the electrophoretic fluid for electrophoresis is a mixture of water-based acrylic resin and color paste.
7. The processing technology of the aluminum alloy stretching shell as recited in claim 1, wherein the step of baking finish in S5 includes three times of oil-spraying baking finish, and the three times of oil-spraying baking finish are respectively: prime white, pearl white, UV; the paint is dried after each paint baking.
8. The processing technology of the aluminum alloy stretching shell as recited in claim 7, wherein the mixture ratio of the raw materials of the base white is as follows: 10 parts of paint, 1.5 parts of curing agent and 7-10 parts of diluent, wherein the baking varnish temperature of priming white is 70-80 ℃, and the baking varnish time is 20 minutes; the pearl white comprises the following raw materials in proportion: 10 parts of paint, 1.5 parts of curing agent and 10-12 parts of diluent, wherein the temperature of pearlescent white baking varnish is 70-80 ℃, and the baking varnish time is 20 minutes; the UV comprises the following raw materials in percentage by weight: 10 parts of UV gloss oil and 2 parts of diluent, and drying by adopting an ultraviolet hood after UV oil spraying and paint baking.
9. The process of claim 1, wherein the oxidation step comprises hanging, conductivity testing, alkaline degreasing, anodic oxidation coating, coloring, sealing protection, and drying.
10. The process for manufacturing an aluminum alloy drawn shell according to claim 9, wherein the alkaline degreasing temperature is 90 ℃ and the time is 2 minutes; the anodic oxidation solution of the anodic oxidation coating is sulfuric acid, and the anodic oxidation time is 10 minutes; the drying temperature in the oxidation procedure is 80 ℃, and the drying time is 8 minutes.
CN202011582953.5A 2020-12-28 2020-12-28 Processing technology of aluminum alloy stretching shell Pending CN112760695A (en)

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Application Number Priority Date Filing Date Title
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Publication number Priority date Publication date Assignee Title
CN107548255A (en) * 2017-08-07 2018-01-05 维沃移动通信有限公司 A kind of terminal shell and preparation method thereof
CN108057595A (en) * 2017-11-29 2018-05-22 蚌埠市福沃特车轮制造科技有限公司 A kind of high-wearing feature automotive hub coating process
CN108636733A (en) * 2018-05-02 2018-10-12 福耀玻璃工业集团股份有限公司 A kind of process of surface treatment of the bright panel of stainless steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107548255A (en) * 2017-08-07 2018-01-05 维沃移动通信有限公司 A kind of terminal shell and preparation method thereof
CN108057595A (en) * 2017-11-29 2018-05-22 蚌埠市福沃特车轮制造科技有限公司 A kind of high-wearing feature automotive hub coating process
CN108636733A (en) * 2018-05-02 2018-10-12 福耀玻璃工业集团股份有限公司 A kind of process of surface treatment of the bright panel of stainless steel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈治良: "《电泳涂装 实用技术》", 30 September 2009, 上海科学技术出版社 *

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