CN112442721A - Electrophoresis painting process for heat-insulation bridge-cut-off aluminum profile - Google Patents

Electrophoresis painting process for heat-insulation bridge-cut-off aluminum profile Download PDF

Info

Publication number
CN112442721A
CN112442721A CN202011265481.0A CN202011265481A CN112442721A CN 112442721 A CN112442721 A CN 112442721A CN 202011265481 A CN202011265481 A CN 202011265481A CN 112442721 A CN112442721 A CN 112442721A
Authority
CN
China
Prior art keywords
aluminum profile
electrophoresis
electrophoretic
parts
tank
Prior art date
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.)
Pending
Application number
CN202011265481.0A
Other languages
Chinese (zh)
Inventor
王元飞
李岗飞
张云龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xi'an Kunlun Industry Group Co ltd
Original Assignee
Xi'an Kunlun Industry Group Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xi'an Kunlun Industry Group Co ltd filed Critical Xi'an Kunlun Industry Group Co ltd
Priority to CN202011265481.0A priority Critical patent/CN112442721A/en
Publication of CN112442721A publication Critical patent/CN112442721A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00Electrophoretic coating characterised by the process
    • C25D13/12Electrophoretic coating characterised by the process characterised by the article coated
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00Electrophoretic coating characterised by the process
    • C25D13/20Pretreatment
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00Electrophoretic coating characterised by the process
    • C25D13/22Servicing or operating apparatus or multistep processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention discloses an electrophoresis painting process for a heat-insulation bridge-cut-off aluminum profile, which comprises the following steps of; step one, pretreatment of painting; step two, preparing electrophoretic paint; step three, putting the electrophoretic paint obtained in the step two into an electrophoresis tank, and adjusting related parameters to 7-9% of solid content, 20-25 ℃, pH8.0-8.8, and 1500-2500 of resistivity pi omega cm (20 ℃); and step four, taking out the aluminum profile processed in the step one, putting the aluminum profile into an electrophoresis tank, and carrying out electrophoresis treatment on the aluminum profile and the electrophoretic paint, wherein the parameters of the electrophoresis treatment are voltage of 80-250V (DC), electrophoresis time of 1-3min and current density of 15-50A pi m2 until the coating thickness of the aluminum profile reaches 7-12 mu m. The invention is easy to realize automatic production, because the electrophoretic coating is carried out in the water-based electrophoretic bath, similar to the anodic oxidation and electrolytic coloring process, the treatment time is short, the utilization rate of the coating is high, the coating is uniform and compact, the coating quality is good, the thickness of the coating can be freely controlled, the processing technology of the aluminum profile is improved, and the qualification rate of the electrophoretic profile is improved.

Description

Electrophoresis painting process for heat-insulation bridge-cut-off aluminum profile
Technical Field
The invention relates to the technical field of aluminum profile electrophoresis, in particular to an electrophoretic painting process for a heat-insulation bridge-cut-off aluminum profile.
Background
The traditional surface treatment process of the aluminum section is oxidation, coloring and sealing treatment, and a conversion coating of the aluminum is easy to corrode and has poor durability when being used outdoors for a long time, particularly in acid rain or marine environment, so that a coating method is tried to improve the decorative performance and the service life of the architectural aluminum section since the 70 s, and at present, electrophoretic coating, powder coating and fluorocarbon spraying are used industrially and successfully.
Among the surface treatment technologies, electrocoating is the most developed technology. The aluminum profile is subjected to electrophoresis coating after anodization and electrolytic coloring, and has double-layer protection. The coating has high transparency, high metal texture, high corrosion resistance and high weather resistance, is more decorative than spray painting and powder spraying, is deeply loved by users, is widely used for home decoration, has high decoration and can highlight the metal luster of the aluminum profile, has great potential market, and therefore, the electrophoretic coating is increasingly used on the building aluminum profile; however, in practice, the electrophoretic painting process of the heat-insulating bridge-cut-off section bar in the actual production process is troublesome, the utilization rate of the coating is low, the coating is uniform and not dense, and the coating is not thick and uniform, so that the product quality is influenced.
Disclosure of Invention
The invention aims to provide an electrophoretic painting process for a heat-insulation bridge-cut-off aluminum profile, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an electrophoresis painting process for a heat-insulation bridge-cut aluminum profile comprises the following steps;
step one, pretreatment before painting: polishing the surface of the aluminum profile to remove oxide skin and burrs, putting the aluminum profile into ultrasonic equipment, mixing the aluminum profile with cleaning fluid to perform surface grease treatment, cleaning the aluminum profile with warm water after treatment, and drying the aluminum profile;
step two, preparing electrophoretic paint;
s1, mixing the resin, the polyester polyol and the deionized water, fully dissolving the mixture with the nonionic surfactant, and dropwise adding a 5-10% NaOH solution until the pH value of the solution is 6-6.5;
s2, adding the modified amine curing agent, the cross-linking agent and the flatting agent, stirring, diluting with a neutralizing agent, and stirring and emulsifying at a high speed for 1-1.5h to obtain the electrophoretic paint;
step three, putting the electrophoretic paint obtained in the step two into an electrophoresis tank, and adjusting related parameters to 7-9% of solid content, 20-25 ℃, pH8.0-8.8, and 1500-2500 of resistivity pi omega cm (20 ℃);
taking out the aluminum profile processed in the step one, putting the aluminum profile into an electrophoresis tank, and carrying out electrophoresis treatment on the aluminum profile and electrophoretic paint, wherein the parameters of the electrophoresis treatment are voltage of 80-250V (DC), electrophoresis time of 1-3min and current density of 15-50A pi m2 until the coating thickness of the aluminum profile reaches 7-12 mu m;
and step five, drying the electrophoretic painted aluminum section in a radiation convection mode, wherein the anode electrophoretic paint film needs to be baked at the temperature of 140-170 ℃.
Preferably, the electrophoresis tank is a rectangular tank, the tank body is made of a 4-6mm steel plate, the lining of the electrophoresis tank is made of polypropylene or epoxy glass steel, and the electrophoresis tank is provided with an overflow tank.
Preferably, in the second step, the electrophoretic paint is composed of the following raw materials in parts by weight: 40-60 parts of resin, 20-30 parts of polyester polyol, 15-20 parts of modified amine curing agent, 10-18 parts of deionized water, 8-15 parts of cross-linking agent, 5-8 parts of flatting agent, 5-8 parts of neutralizing agent and 2-5 parts of nonionic surfactant.
Preferably, in the second step, the resin is any one or more of polyester resin, epoxy resin or olefine acid resin.
Preferably, in the fourth step, an ion exchange treatment system is arranged in the electrophoresis tank, the pH value of the cathode is increased continuously during the anode electrophoresis, impurities in the tank liquor can be removed by adopting the ion exchange treatment system, and the pH value of the tank liquor is stabilized by adopting anions and cations.
Preferably, in the fourth step, the electrophoresis of the electrophoresis is direct current, the direct current is required to be arbitrarily adjustable from 0A to 250A, and the ripple factor of the power supply is less than 6%.
The electrophoresis painting process for the heat-insulation bridge-cut-off aluminum profile, provided by the invention, has the beneficial effects that: the invention is easy to realize automatic production, because the electrophoretic coating is carried out in the water-based electrophoretic bath, is similar to the anodic oxidation and electrolytic coloring process, has short treatment time, is easy to realize the flow line operation of the whole process, has high utilization rate of the coating, uniform and compact coating and good coating quality, can freely control the thickness of the coating, improves the processing technology of the aluminum profile and improves the qualification rate of the electrophoretic profile.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1, the present invention provides a technical solution: an electrophoresis painting process for a heat-insulation bridge-cut aluminum profile comprises the following steps; step one, pretreatment before painting: polishing the surface of the aluminum profile to remove oxide skin and burrs, putting the aluminum profile into ultrasonic equipment, mixing the aluminum profile with cleaning fluid to perform surface grease treatment, cleaning the aluminum profile with warm water after treatment, and drying the aluminum profile; step two, preparing electrophoretic paint; s1, mixing the resin, the polyester polyol and the deionized water, fully dissolving the mixture with the nonionic surfactant, and dropwise adding 8% NaOH solution until the pH value of the solution is 6.2; s2, adding the modified amine curing agent, the cross-linking agent and the flatting agent, stirring, diluting with a neutralizing agent, and stirring at a high speed for emulsifying for 1.2h to obtain the electrophoretic paint; the electrophoretic paint is prepared from the following raw materials in parts by weight: 50 parts of resin, 25 parts of polyester polyol, 18 parts of modified amine curing agent, 15 parts of deionized water, 13 parts of crosslinking agent, 7 parts of flatting agent, 6 parts of neutralizing agent and 3 parts of nonionic surfactant, wherein the resin is polyester resin and epoxy resin; step three, putting the electrophoretic paint obtained in the step two into an electrophoresis tank, and adjusting related parameters to 8% of solid content, 23 ℃, pH8.6 and 2000 of resistivity pi omega cm (20 ℃); the electrophoresis tank is a rectangular tank, the tank body is made of a 5mm steel plate, the lining of the electrophoresis tank is made of polypropylene or epoxy glass steel, the overflow tank is internally provided with an ion exchange treatment system, the pH value of a cathode is continuously increased during anode electrophoresis, the ion exchange treatment system is adopted to remove impurities in the tank liquor, and anions and cations stabilize the pH value of the tank liquor; taking out the aluminum profile processed in the step one, putting the aluminum profile into an electrophoresis tank, and carrying out electrophoresis treatment on the aluminum profile and electrophoretic paint, wherein the parameters of the electrophoresis treatment are voltage 220V (DC), electrophoresis time 2min and current density 35A pi m2 until the coating thickness of the aluminum profile reaches 8 mu m, the electrophoresis of the electrophoresis adopts direct current, the direct current is required to be 0-250A and can be adjusted freely, and the ripple factor of a power supply is less than 6%; and step five, drying the electrophoretic painted aluminum section in a radiation convection mode, wherein the anodic electrophoretic paint film needs to be baked at the temperature of 150 ℃.
Embodiment 2, the present invention provides another technical solution: an electrophoresis painting process for a heat-insulation bridge-cut aluminum profile comprises the following steps; step one, pretreatment before painting: polishing the surface of the aluminum profile to remove oxide skin and burrs, putting the aluminum profile into ultrasonic equipment, mixing the aluminum profile with cleaning fluid to perform surface grease treatment, cleaning the aluminum profile with warm water after treatment, and drying the aluminum profile; step two, preparing electrophoretic paint; s1, mixing the resin, the polyester polyol and the deionized water, fully dissolving the mixture with the nonionic surfactant, and dropwise adding 6% NaOH solution until the pH value of the solution is 6.5; s2, adding the modified amine curing agent, the cross-linking agent and the flatting agent, stirring, diluting with a neutralizing agent, and stirring at a high speed for emulsifying for 1.5h to obtain the electrophoretic paint; the electrophoretic paint is prepared from the following raw materials in parts by weight: 45 parts of resin, 23 parts of polyester polyol, 18 parts of modified amine curing agent, 15 parts of deionized water, 12 parts of cross-linking agent, 8 parts of flatting agent, 6 parts of neutralizing agent and 4 parts of nonionic surfactant, wherein the resin is polyester resin and olefine acid resin; step three, putting the electrophoretic paint obtained in the step two into an electrophoresis tank, and adjusting related parameters to 7.4% of solid content, 22 ℃, pH8.8 and 2300 of resistivity pi omega cm (20 ℃); the electrophoresis tank is a rectangular tank, the tank body is made of a 6mm steel plate, the lining of the electrophoresis tank is made of polypropylene or epoxy glass steel, the overflow tank is internally provided with an ion exchange treatment system, the pH value of a cathode is increased continuously during anode electrophoresis, the ion exchange treatment system is adopted to remove impurities in the tank liquor, and anions and cations stabilize the pH value of the tank liquor; taking out the aluminum profile processed in the step one, putting the aluminum profile into an electrophoresis tank, and carrying out electrophoresis treatment on the aluminum profile and electrophoretic paint, wherein the parameters of the electrophoresis treatment are voltage of 180V (DC), electrophoresis time of 2.5min and current density of 40A pi m2 until the thickness of a coating film of the aluminum profile reaches 9 mu m, the electrophoresis of the electrophoresis adopts direct current, the direct current is required to be freely adjustable at 0-250A, and the ripple factor of a power supply is less than 6%; and step five, drying the electrophoretic painted aluminum section in a radiation convection mode, wherein the anodic electrophoretic paint film needs to be baked at the temperature of 155 ℃.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The electrophoresis painting process of the heat-insulation bridge-cut-off aluminum profile is characterized by comprising the following steps of: comprises the following steps;
step one, pretreatment before painting: polishing the surface of the aluminum profile to remove oxide skin and burrs, putting the aluminum profile into ultrasonic equipment, mixing the aluminum profile with cleaning fluid to perform surface grease treatment, cleaning the aluminum profile with warm water after treatment, and drying the aluminum profile;
step two, preparing electrophoretic paint;
s1, mixing the resin, the polyester polyol and the deionized water, fully dissolving the mixture with the nonionic surfactant, and dropwise adding a 5-10% NaOH solution until the pH value of the solution is 6-6.5;
s2, adding the modified amine curing agent, the cross-linking agent and the flatting agent, stirring, diluting with a neutralizing agent, and stirring and emulsifying at a high speed for 1-1.5h to obtain the electrophoretic paint;
step three, putting the electrophoretic paint obtained in the step two into an electrophoresis tank, and adjusting related parameters to 7-9% of solid content, 20-25 ℃, pH8.0-8.8, and 1500-2500 of resistivity pi omega cm (20 ℃);
taking out the aluminum profile processed in the step one, putting the aluminum profile into an electrophoresis tank, and carrying out electrophoresis treatment on the aluminum profile and electrophoretic paint, wherein the parameters of the electrophoresis treatment are voltage of 80-250V (DC), electrophoresis time of 1-3min and current density of 15-50A pi m2 until the coating thickness of the aluminum profile reaches 7-12 mu m;
and step five, drying the electrophoretic painted aluminum section in a radiation convection mode, wherein the anode electrophoretic paint film needs to be baked at the temperature of 140-170 ℃.
2. The electrophoretic painting process for the heat-insulation bridge-cut-off aluminum profile according to claim 1, which is characterized in that: the electrophoresis tank is a rectangular tank, the tank body is made of a 4-6mm steel plate, the lining of the electrophoresis tank is made of polypropylene or epoxy glass steel, and an overflow tank is arranged.
3. The electrophoretic painting process for the heat-insulation bridge-cut-off aluminum profile according to claim 1, which is characterized in that: in the second step, the electrophoretic paint is composed of the following raw materials in parts by weight: 40-60 parts of resin, 20-30 parts of polyester polyol, 15-20 parts of modified amine curing agent, 10-18 parts of deionized water, 8-15 parts of cross-linking agent, 5-8 parts of flatting agent, 5-8 parts of neutralizing agent and 2-5 parts of nonionic surfactant.
4. The electrophoretic painting process for the heat-insulation bridge-cut-off aluminum profile according to claim 1, which is characterized in that: in the second step, the resin is any one or more of polyester resin, epoxy resin or olefine acid resin.
5. The electrophoretic painting process for the heat-insulation bridge-cut-off aluminum profile according to claim 1, which is characterized in that: and in the fourth step, an ion exchange treatment system is arranged in the electrophoresis tank, the pH value of the cathode can be continuously increased during the anode electrophoresis, impurities in the tank liquor can be removed by adopting the ion exchange treatment system, and the pH value of the tank liquor is stable due to anions and cations.
6. The electrophoresis painting process of the heat-insulation bridge-cut-off aluminum profile according to claim 2, characterized in that: in the fourth step, the electrophoresis of the electrophoresis adopts direct current, the direct current is required to be arbitrarily adjustable from 0A to 250A, and the ripple factor of a power supply is less than 6 percent.
CN202011265481.0A 2020-11-13 2020-11-13 Electrophoresis painting process for heat-insulation bridge-cut-off aluminum profile Pending CN112442721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011265481.0A CN112442721A (en) 2020-11-13 2020-11-13 Electrophoresis painting process for heat-insulation bridge-cut-off aluminum profile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011265481.0A CN112442721A (en) 2020-11-13 2020-11-13 Electrophoresis painting process for heat-insulation bridge-cut-off aluminum profile

Publications (1)

Publication Number Publication Date
CN112442721A true CN112442721A (en) 2021-03-05

Family

ID=74736981

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011265481.0A Pending CN112442721A (en) 2020-11-13 2020-11-13 Electrophoresis painting process for heat-insulation bridge-cut-off aluminum profile

Country Status (1)

Country Link
CN (1) CN112442721A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113529153A (en) * 2021-07-29 2021-10-22 江阴南方新能源科技有限公司 High-brightness corrosion-resistant electrophoresis process for photovoltaic aluminum profile
CN114250495A (en) * 2022-01-18 2022-03-29 安徽科蓝特铝业有限公司 Environment-friendly aluminum profile processing technology

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105153782A (en) * 2015-07-29 2015-12-16 湖南省霖辉高新材料科技有限公司 Aluminium paste anode electrophoresis tank liquid and aluminium paste anode electrophoresis technology
CN106637355A (en) * 2016-11-25 2017-05-10 北京工业大学 Electrophoretic deposition device and method for preparing film by using electorphoretic deposition method
CN106634525A (en) * 2016-10-19 2017-05-10 东莞市霖辉金属表面处理材料有限公司 Polyurethane-acrylate cathodic electrophoretic coating material, preparation method therefor and application of polyurethane-acrylate cathodic electrophoretic coating material
CN107699936A (en) * 2017-09-02 2018-02-16 湖南金牛铝业有限公司 A kind of heat insulation broken bridge aluminum profile electrophoresis painting technique
CN108727958A (en) * 2018-05-25 2018-11-02 河北晨阳工贸集团有限公司 A kind of cathode electrophoresis dope and preparation method thereof
CN108727949A (en) * 2018-05-10 2018-11-02 诸城市福日机械有限公司 A kind of electrophoretic paint of frame coating
CN108774745A (en) * 2018-05-30 2018-11-09 广东耀银山铝业有限公司 A kind of easy pole electrophoresis production technology and aluminium section bar obtained
CN109575782A (en) * 2018-11-15 2019-04-05 青岛科技大学 Graphene oxide modified polyurethane electrophoresis resin, polyurethane electrophoretic paint and preparation method thereof
CN109913059A (en) * 2019-01-10 2019-06-21 河北晨阳工贸集团有限公司 A kind of cathode electrophoresis dope and preparation method thereof of high throwing power

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105153782A (en) * 2015-07-29 2015-12-16 湖南省霖辉高新材料科技有限公司 Aluminium paste anode electrophoresis tank liquid and aluminium paste anode electrophoresis technology
CN106634525A (en) * 2016-10-19 2017-05-10 东莞市霖辉金属表面处理材料有限公司 Polyurethane-acrylate cathodic electrophoretic coating material, preparation method therefor and application of polyurethane-acrylate cathodic electrophoretic coating material
CN106637355A (en) * 2016-11-25 2017-05-10 北京工业大学 Electrophoretic deposition device and method for preparing film by using electorphoretic deposition method
CN107699936A (en) * 2017-09-02 2018-02-16 湖南金牛铝业有限公司 A kind of heat insulation broken bridge aluminum profile electrophoresis painting technique
CN108727949A (en) * 2018-05-10 2018-11-02 诸城市福日机械有限公司 A kind of electrophoretic paint of frame coating
CN108727958A (en) * 2018-05-25 2018-11-02 河北晨阳工贸集团有限公司 A kind of cathode electrophoresis dope and preparation method thereof
CN108774745A (en) * 2018-05-30 2018-11-09 广东耀银山铝业有限公司 A kind of easy pole electrophoresis production technology and aluminium section bar obtained
CN109575782A (en) * 2018-11-15 2019-04-05 青岛科技大学 Graphene oxide modified polyurethane electrophoresis resin, polyurethane electrophoretic paint and preparation method thereof
CN109913059A (en) * 2019-01-10 2019-06-21 河北晨阳工贸集团有限公司 A kind of cathode electrophoresis dope and preparation method thereof of high throwing power

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈治良等, 上海科学技术出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113529153A (en) * 2021-07-29 2021-10-22 江阴南方新能源科技有限公司 High-brightness corrosion-resistant electrophoresis process for photovoltaic aluminum profile
CN114250495A (en) * 2022-01-18 2022-03-29 安徽科蓝特铝业有限公司 Environment-friendly aluminum profile processing technology
CN114250495B (en) * 2022-01-18 2023-08-04 安徽科蓝特铝业股份有限公司 Environment-friendly aluminum profile machining process

Similar Documents

Publication Publication Date Title
CN112442721A (en) Electrophoresis painting process for heat-insulation bridge-cut-off aluminum profile
CN103352244A (en) High-light anode oxidation and electrophoresis process of aluminium alloy
CN112663107A (en) Matte-surface black high-corrosion-resistance aluminum alloy surface treatment method
CN103820835A (en) Color electrophoretic coating process of aluminum alloy sections
CN109317382B (en) Surface treatment process for aluminum alloy section
CN107723495A (en) Aluminium section bar founding aluminium bar preparation method
CN103272749A (en) Surface treatment method of zinc alloy die casting
CN107937903A (en) A kind of preparation method of corrosive protection of aluminium alloy layer
CN111073459A (en) Energy-saving and environment-friendly cathode electrophoretic coating
CN114990662A (en) Preparation process of solar corrosion-resistant aluminum frame
CN101698955A (en) Stainless steel, titanium and titanium alloy electromechanical blackening method
CN109457280A (en) A kind of process of electrogalvanizing
CN113622005A (en) Method for improving light aging resistance of automobile colorful coloring exterior trimming part
CN106381516A (en) Aluminum-plastic composite panel coloring treatment method based on electrolytic coloring technology
CN104164685A (en) Method for plating nickel on steel plate
CN105040074A (en) Electrophoresis wood grain aluminum profile and manufacturing process thereof
CN107699936A (en) A kind of heat insulation broken bridge aluminum profile electrophoresis painting technique
CN108950639A (en) A kind of hard anodized treatment process of cold extrusion shaped aluminum alloy part
CN112317280A (en) Environment-friendly wheel paint spraying process
TWI461575B (en) Method of manufacturing electrogalvanized steel sheets
CN111842084A (en) Preparation method of whole-roll wiredrawing antique copper stainless steel
CN111088514A (en) New energy automobile electrophoresis process, system and part product thereof
JP5609344B2 (en) Method for producing electrogalvanized steel sheet
CN108642350A (en) A kind of anticorrosion aluminium ally section and its surface treatment method
JPS6365086A (en) Black surface-treated steel sheet and its production

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210305

RJ01 Rejection of invention patent application after publication