CN117626261A - Surface treatment process for pulsator washing machine flange - Google Patents

Surface treatment process for pulsator washing machine flange Download PDF

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Publication number
CN117626261A
CN117626261A CN202410112870.1A CN202410112870A CN117626261A CN 117626261 A CN117626261 A CN 117626261A CN 202410112870 A CN202410112870 A CN 202410112870A CN 117626261 A CN117626261 A CN 117626261A
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CN
China
Prior art keywords
flange
coating
powder
electrophoresis
shot blasting
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
CN202410112870.1A
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Chinese (zh)
Inventor
蔡胜
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.)
Jingjiang Shengtai Metal Products Co ltd
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Jingjiang Shengtai Metal Products 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 Jingjiang Shengtai Metal Products Co ltd filed Critical Jingjiang Shengtai Metal Products Co ltd
Priority to CN202410112870.1A priority Critical patent/CN117626261A/en
Publication of CN117626261A publication Critical patent/CN117626261A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • C23C28/3225Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only with at least one zinc-based layer
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06Zinc or cadmium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00Coating starting from inorganic powder
    • C23C24/02Coating starting from inorganic powder by application of pressure only
    • C23C24/04Impact or kinetic deposition of particles
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

The invention discloses a surface treatment process for a flange of a pulsator washing machine, which comprises six key steps: (1) galvanization: immersing the pretreated flange into a molten electroplating bath for hot galvanizing treatment; (2) shot blasting: a uniform zinc coating is formed on the surface of the flange by utilizing a high-speed shot blasting machine, so that the corrosion resistance is improved; (3) electrophoresis: a uniform electrophoretic coating is formed through electrophoresis, so that the corrosion resistance of the flange is increased; (4) spraying powder: covering the powder coating with a high pressure powder gun to provide additional protection and uniformity; (5) checking: the quality and uniformity of the coating are ensured by visual inspection and performance testing. Compared with the prior art, the invention has the advantages that: the application provides an improved flange surface treatment method which can remarkably improve the hydrochloric acid resistance, durability and wear resistance of the flange.

Description

Surface treatment process for pulsator washing machine flange
Technical Field
The invention relates to the technical field of pulsator washing machine flange processing, in particular to a pulsator washing machine flange surface treatment process.
Background
Pulsator washing machines are electric devices indispensable for home daily life, and are used for washing and treating laundry. The working principle involves several components, including flanges, which play a critical role in ensuring the proper functioning and washing effect of the washing cycle. In conventional pulsator washing machines, the flange surface is usually treated with a simple coating or material, which has some significant drawbacks. Conventional flanges may be susceptible to the following problems:
1. the hydrochloric acid resistance is short, and the corrosion is easy to happen: conventional pulsator washing machine flanges are generally faced with corrosion of acidic substances, especially weak acidic detergents which may be used in washing processes, and conventional pulsator washing machine flanges do not provide sufficient hydrochloric acid resistance, and thus, the flange surfaces are easily corroded by the acidic substances.
2. The electrophoresis layer is easy to fall off: the electrophoresis layer of traditional flange adheres to insecurely, peels off gradually in the use, has increased the impaired risk of flange, has also influenced appearance quality simultaneously.
3. Insufficient wear resistance: the coating or material treatment of conventional flanges does not provide sufficient wear resistance, which makes the flange susceptible to scratches or abrasion during ordinary use.
Disclosure of Invention
The invention aims to overcome the technical defects and provide a surface treatment process for a flange of a pulsator washing machine.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a surface treatment process for a pulsator washing machine flange comprises the following steps:
(1) Zinc plating: immersing the pretreated flange into a molten electroplating bath for hot galvanizing treatment, and reacting the surface of the flange with molten zinc at high temperature to form a uniform zinc coating;
(2) Blasting: the galvanized flange surface is placed in a shot blasting machine for shot blasting, and zinc particles are sprayed at high speed, wherein the grain size of a shot blasting material is 0.2-0.5mm, and the thickness of a galvanized layer after shot blasting is 8-12 mu m;
(3) Electrophoresis: immersing the flange after shot blasting into an electrophoresis tank, and forming a layer of uniform electrophoresis coating on the surface of the flange through an electrophoresis process, wherein the thickness of the electrophoresis coating is 10-20 mu m, and the voltage of the electrophoresis coating is 50-100V;
(4) Spraying powder: feeding the flange after electrophoresis into a powder spraying chamber, and coating powder on the surface of the flange through a high-voltage electrostatic powder spraying gun to form a layer of uniform powder coating, wherein the thickness of the powder coating is 50-80 mu m;
(5) And (3) checking: after the steps are finished, appearance inspection and performance test are carried out on the treated flange, so that the quality and uniformity of the surface coating are ensured.
Further, in step (2), the shot blasting process includes the sub-steps of:
(1.1) surface cleaning: immersing the flange to be treated in a cleaning solution to remove greasy dirt and impurities on the surface.
Further, the hardness of the shot blasting material of the shot blasting machine is 50-70HRC.
Further, the electrophoretic coating material in the electrophoresis tank is epoxy resin, the curing temperature is 160-180 ℃, and the curing time is 20-30 minutes.
Further, the powder material of the powder spraying coating is polyester powder, the curing temperature is 200+/-5 ℃, and the curing time is 15-25 minutes.
Further, the high pressure powder gun in the powder spray chamber has a pressure of 60-80psi and the distance of the powder gun from the flange surface is 20-30cm.
Further, the temperature inside the curing oven is controlled to be 180-200 ℃.
Further, inspection of the flange includes visual inspection, coating thickness measurement, adhesion testing, and corrosion resistance testing.
Compared with the prior art, the invention has the advantages that:
1. corrosion resistance is enhanced: by forming uniform zinc plating, electrophoresis coating and powder coating on the surface of the flange, the technical scheme obviously improves the corrosion resistance of the flange, and the flange manufactured by the process is more durable and can better resist the erosion of humid environment and chemical substances.
2. Avoiding the peeling of the flange: conventional flanges can peel during use, which can lead to uneven surfaces and particle shedding. According to the technical scheme, the zinc coating, the electrophoresis coating and the powder coating are adopted, so that the problem of flange peeling can be remarkably reduced, and the consistency of the surface is maintained.
3. The washed clothes are not polluted: the improved surface treatment process has the advantages that the particles are not easy to fall off from the surface of the flange, so that the washed clothes cannot be polluted, the flange is a remarkable improvement on the traditional flange, and a more sanitary washing process can be provided.
4. High quality appearance and performance: the present application includes stringent quality control steps such as appearance inspection, coating thickness measurement, adhesion testing, and corrosion resistance testing, which ensure that the treated flange has a high quality appearance and performance.
5. Protection of the multilayer coating: the use of multiple layers of coatings, including zinc plating, electrophoretic coating, and powder coating, provides additional protective layers that enhance the durability and corrosion resistance of the flange.
In general, this solution provides an improved method for treating the surface of a flange, which can significantly improve the performance, durability and hygiene of the flange, avoiding some of the problems of the prior art. This may positively affect the performance and user experience of the pulsator washing machine.
Drawings
FIG. 1 is a schematic diagram of a process flow for treating the surface of a flange of a pulsator washing machine.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals.
It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, a surface treatment process for a pulsator washing machine flange comprises the following steps:
(1) Zinc plating: immersing the pretreated flange into a molten electroplating bath for hot galvanizing treatment, and reacting the surface of the flange with molten zinc at high temperature to form a uniform zinc coating;
(2) Blasting: the galvanized flange surface is placed in a shot blasting machine for shot blasting, and zinc particles are sprayed at high speed, wherein the grain size of a shot blasting material is 0.2-0.5mm, and the thickness of a galvanized layer after shot blasting is 8-12 mu m;
(3) Electrophoresis: immersing the flange after shot blasting into an electrophoresis tank, and forming a layer of uniform electrophoresis coating on the surface of the flange through an electrophoresis process, wherein the thickness of the electrophoresis coating is 10-20 mu m, and the voltage of the electrophoresis coating is 50-100V;
(4) Spraying powder: feeding the flange after electrophoresis into a powder spraying chamber, and coating powder on the surface of the flange through a high-voltage electrostatic powder spraying gun to form a layer of uniform powder coating, wherein the thickness of the powder coating is 50-80 mu m;
(5) And (3) checking: after the steps are finished, appearance inspection and performance test are carried out on the treated flange, so that the quality and uniformity of the surface coating are ensured.
In one embodiment, in step (2), the shot blasting process comprises the sub-steps of:
(1.1) surface cleaning: immersing the flange to be treated in a cleaning solution to remove greasy dirt and impurities on the surface;
in one embodiment, in step (2), the shot blasting material of the shot blasting machine has a hardness of 50-70HRC.
In one embodiment, in step (3), wherein the electrocoat material in the electrophoresis tank is an epoxy resin, the curing temperature is 160-180 ℃ and the curing time is 20-30 minutes.
In one embodiment, in step (4), wherein the powder material of the powder coating is a polyester powder, the curing temperature is 200-220 ℃ and the curing time is 15-25 minutes.
In one embodiment, in step (4), the high pressure powder gun in the powder spray chamber is at a pressure of 60-80psi and the powder gun is at a distance of 20-30cm from the flange surface.
In one embodiment, in step (5), the inspection of the flange includes visual inspection, coating thickness measurement, adhesion testing, and corrosion resistance testing.
Example 1: shot blasting parameter comparison experiment of shot blasting machine
Example 1.1: a comparative experiment was conducted on the pressure of the shot blasting machine to compare the uniformity and adhesion of the zinc coating on the flange surface at two different pressures, 30psi and 50 psi.
Test data 1.1:
at a pressure of 30psi, the zinc coating uniformity score was 8 (1-10 minutes), and the adhesion test result was 50 kg drop hammer punch.
The zinc coating uniformity score was 9 and the adhesion test result was 300N at a pressure of 50 psi.
Conclusion 1.1: the 50psi shot blasting machine produces a more uniform surface friction force, thereby improving the adhesion and improving the performance of the flange.
Example 2: electrophoretic coating material comparative experiments
Example 2.1: the corrosion resistance of the flange was compared with two different electrocoating materials, epoxy and polyester.
Test data 2.1:
the flange using the epoxy electrophoretic coating has a corrosion resistance time of 200 hours in the salt spray test.
The flange using the polyester resin electrophoretic coating has the corrosion resistance time of 180 hours under the same condition.
Conclusion 2.1: the epoxy resin electrophoretic coating has better corrosion resistance and can improve the durability of the flange.
Example 3: comparative experiment of the thickness of powder coating
Example 3.1: and comparing the test conditions of the flange with different powder coating thicknesses.
Test data 3.1:
when the thickness of the powder spraying coating is 50 mu m, the falling rate of flange particles is 3 percent.
When the thickness of the powder spraying coating is 80 mu m, the falling rate of flange particles is 2 percent.
Conclusion 3.1: when the thickness of the powder spraying coating is 80 mu m, the particle falling rate of the flange is lower, and the surface is more uniform.
Example 4: appearance inspection and performance test results
Example 4.1: and performing appearance inspection and performance test on the flange subjected to the complete process treatment.
Test data 4.1:
appearance inspection results: the surface is uniform and no defects are visible.
Coating thickness measurement: zinc coating 8-12 μm, electrophoresis coating 10-20 μm, spray coating 50-80 μm.
Adhesion test: 50 kg impact.
Corrosion resistance test: the salt spray resistance test is up to 480 hours.
Conclusion 4.1: appearance and performance test results show that the flange manufactured by the process has high quality appearance and performance, indicating successful implementation of the improved surface treatment method.
These examples and experimental data demonstrate the advantages of the flange surface treatment process of the present process, including improved corrosion resistance, reduced coating slip, providing high quality appearance and performance. These improvements are expected to improve the performance and user experience of pulsator washing machines, providing users with more hygienic and durable products.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.

Claims (8)

1. The surface treatment process of the pulsator washing machine flange is characterized by comprising the following steps of:
(1) Zinc plating: immersing the pretreated flange into a molten electroplating bath for hot galvanizing treatment, and reacting the surface of the flange with molten zinc at high temperature to form a uniform zinc coating;
(2) Blasting: the galvanized flange surface is placed in a shot blasting machine for shot blasting, and zinc particles are sprayed at high speed, wherein the grain size of a shot blasting material is 0.2-0.5mm, and the thickness of a galvanized layer after shot blasting is 8-12 mu m;
(3) Electrophoresis: immersing the flange after shot blasting into an electrophoresis tank, and forming a layer of uniform electrophoresis coating on the surface of the flange through an electrophoresis process, wherein the thickness of the electrophoresis coating is 10-20 mu m, and the voltage of the electrophoresis coating is 50-100V;
(4) Spraying powder: feeding the flange after electrophoresis into a powder spraying chamber, and coating powder on the surface of the flange through a high-voltage electrostatic powder spraying gun to form a layer of uniform powder coating, wherein the thickness of the powder coating is 50-80 mu m;
(5) And (3) checking: after the steps are finished, appearance inspection and performance test are carried out on the treated flange, so that the quality and uniformity of the surface coating are ensured.
2. The pulsator washing machine flange surface treatment process according to claim 1, wherein in step (2), the shot blasting process includes the sub-steps of:
(1.1) surface cleaning: immersing the flange to be treated in a cleaning solution to remove greasy dirt and impurities on the surface.
3. The pulsator washing machine flange surface treatment process according to claim 1, wherein in the step (2), the hardness of the shot blasting material of the shot blasting machine is 50-70HRC.
4. The surface treatment process for a pulsator washing machine flange according to claim 1, wherein in the step (3), the electrophoretic coating material in the electrophoresis tank is epoxy resin, and the curing temperature is 160-180 ℃ and the curing time is 20-30 minutes.
5. The pulsator washing machine flange surface treatment process according to claim 1, wherein in the step (4), the powder material of the powder spray coating is polyester powder, the curing temperature is 200±5 ℃, and the curing time is 15 to 25 minutes.
6. The pulsator washing machine flange surface treatment process according to claim 5, wherein in the step (4), the pressure of the high pressure powder spray gun in the powder spray chamber is 60-80psi, and the distance between the powder spray gun and the flange surface is 20-30cm.
7. The pulsator washing machine flange surface treatment process according to claim 1, wherein in the step (5), the temperature inside the curing oven is controlled to 180-200 ℃.
8. The pulsator washing machine flange surface treatment process according to claim 1, wherein in step (6), the inspection of the flange includes an appearance inspection, a coating thickness measurement, an adhesion test, and a corrosion resistance test.
CN202410112870.1A 2024-01-26 2024-01-26 Surface treatment process for pulsator washing machine flange Pending CN117626261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410112870.1A CN117626261A (en) 2024-01-26 2024-01-26 Surface treatment process for pulsator washing machine flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410112870.1A CN117626261A (en) 2024-01-26 2024-01-26 Surface treatment process for pulsator washing machine flange

Publications (1)

Publication Number Publication Date
CN117626261A true CN117626261A (en) 2024-03-01

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB691859A (en) * 1950-01-24 1953-05-20 Bristol Aeroplane Co Ltd Improvements in or relating to coatings
CN105568282A (en) * 2014-10-11 2016-05-11 青岛博利尔机械设备有限公司 Carbon steel surface treatment method
CN111005051A (en) * 2018-10-08 2020-04-14 株洲中车时代电气股份有限公司 Preparation method of metal piece surface composite coating
CN114308598A (en) * 2022-01-05 2022-04-12 武汉日鼎信易达自动化设备有限公司 Automobile surface corrosion-resistant and corrosion-resistant coating treatment method
CN116200793A (en) * 2022-12-05 2023-06-02 王静 Processing technology of alloy workpiece

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB691859A (en) * 1950-01-24 1953-05-20 Bristol Aeroplane Co Ltd Improvements in or relating to coatings
CN105568282A (en) * 2014-10-11 2016-05-11 青岛博利尔机械设备有限公司 Carbon steel surface treatment method
CN111005051A (en) * 2018-10-08 2020-04-14 株洲中车时代电气股份有限公司 Preparation method of metal piece surface composite coating
CN114308598A (en) * 2022-01-05 2022-04-12 武汉日鼎信易达自动化设备有限公司 Automobile surface corrosion-resistant and corrosion-resistant coating treatment method
CN116200793A (en) * 2022-12-05 2023-06-02 王静 Processing technology of alloy workpiece

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