CN111482344A - Corrosion-resistant coating process of sheet metal part for down filling machine - Google Patents
Corrosion-resistant coating process of sheet metal part for down filling machine Download PDFInfo
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- CN111482344A CN111482344A CN202010189118.9A CN202010189118A CN111482344A CN 111482344 A CN111482344 A CN 111482344A CN 202010189118 A CN202010189118 A CN 202010189118A CN 111482344 A CN111482344 A CN 111482344A
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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
- 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
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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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
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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
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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
- 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
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
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- C—CHEMISTRY; METALLURGY
- C23—COATING 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
- C23C—COATING 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a corrosion-resistant coating process of a sheet metal part for a down filling machine, which comprises the following steps of: a. surface pretreatment; b. carrying out secondary surface treatment; c. electrostatic dust removal; d. spraying a primer; e. spraying a middle coating; f. spraying finish paint; g. polishing and waxing. Through the mode, the corrosion-resistant coating process for the sheet metal part for the down filling machine, provided by the invention, has the advantages of good coating effect, high-texture metal appearance, good corrosion resistance effect, excellent physical and chemical properties, difficulty in falling of a coating layer and prolonged service life of the sheet metal part for the down filling machine.
Description
Technical Field
The invention relates to the technical field of sheet metal parts, in particular to a corrosion-resistant coating process of a sheet metal part for a down filling machine.
Background
A down filling machine, a type of light industrial equipment which can be used for commercial use and in the clothing industry. Is a machine which adopts a high-pressure fan to absorb fillers such as down feather, chemical fiber and the like and fill bedding and clothing products such as down jackets, down quilts and the like. The down filling machine mostly adopts a stainless steel shell, so that the appearance is elegant, tidy and durable, and only a fan is used when the down filling machine works, so that the power consumption is low. The down feather filling machine is suitable for being used as down feather filling and selling equipment in shops, and can also form a large-scale factory production line.
The coating of the sheet metal part is the last process of the production of the down filling machine, and aims to improve the corrosion resistance and the aesthetic feeling of the sheet metal part of the down filling machine. In order to reduce the influence factors of oxidation of the sheet metal part in the air and the like and achieve the purpose of attractive appearance, the coating has higher requirements on the coating performance after coating.
Coating is an important link in modern product manufacturing process, rust prevention and corrosion prevention coating quality is one of important aspects of overall product quality, product appearance quality not only reflects product protection and decoration performance, but also is an important factor forming product value, but the existing coating process has some defects, such as poor actual coating effect, easy corrosion, easy falling of a coating layer and the like, and the service life of coating is seriously influenced.
Disclosure of Invention
The invention mainly solves the technical problem of providing a corrosion-resistant coating process of a sheet metal part for a down filling machine, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention adopts a technical scheme that: the corrosion-resistant coating process of the sheet metal part for the down filling machine comprises the following steps:
a. surface pretreatment: carrying out friction rust removal on the surface of the sheet metal part by using waterproof abrasive paper, after rust removal is finished, spraying clear water by using a high-pressure water gun to wash and clean the surface of the sheet metal part, finally wiping the surface of the sheet metal part by using cotton cloth, and naturally drying for 15-25 minutes;
b. surface secondary treatment: performing shot blasting treatment on the surface of the pretreated sheet metal part by using a shot blasting machine, wherein the shot blasting time is 3-6 minutes, so that oxide skin impurities on the surface of the machined part are further removed;
c. electrostatic dust removal: conveying the sheet metal part subjected to the surface secondary treatment to an electrostatic dust removal chamber for electrostatic dust removal;
d. spraying a primer: carrying out UV or PU coating spraying on the surface of the sheet metal part, drying the surface of the sheet metal part after spraying, then carrying out grinding treatment on the dried surface of the sheet metal part, scraping putty on uneven parts of the surface, and grinding to be flat to form a flat primer layer;
e. spraying a middle coating: spraying intermediate layer paint on the surface of the primer layer, curing the intermediate layer paint by adopting ultraviolet rays, and polishing after the intermediate layer paint is completely dried to form a flat intermediate coating; on the surface of the primer layer;
f. spraying finish paint: vacuum coating is carried out on the surface of the middle coating to form a metal coating layer, and the metal coating layer is dried for 10-15 minutes to form finish paint;
g. polishing and waxing: and polishing the sheet metal part sprayed with the finish paint, and then waxing the sheet metal part after polishing to form the sheet metal part coated with the corrosion-resistant finish paint.
In a preferred embodiment of the present invention, the water sand paper in step a is 500-600 mesh water sand paper.
In a preferred embodiment of the present invention, the temperature of the shot blasting treatment in the step b is 120-160 ℃.
In a preferred embodiment of the present invention, the temperature of the drying treatment in the step d is 75-85 ℃.
In a preferred embodiment of the present invention, the energy for ultraviolet curing in step e is 600-800mj/cm2。
In a preferred embodiment of the present invention, the thickness of the primer layer in d is 20-50 μm.
In a preferred embodiment of the invention, the thickness of the intermediate coating in e is 15-25 microns.
In a preferred embodiment of the invention, the thickness of the metal coating layer in f is 8-16 microns.
The invention has the beneficial effects that: the corrosion-resistant coating process for the sheet metal part for the down filling machine, disclosed by the invention, has the advantages of good coating effect, high-texture metal appearance, good corrosion resistance effect, excellent physical and chemical properties, difficulty in falling of a coating layer and prolonged service life of the sheet metal part for the down filling machine.
Drawings
Fig. 1 is a flowchart of a corrosion-resistant coating process of a sheet metal part for a down filling machine according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
As shown in fig. 1, an embodiment of the present invention includes:
a corrosion-resistant coating process of a sheet metal part for a down filling machine comprises the following steps:
a. surface pretreatment: carrying out friction rust removal on the surface of the sheet metal part by using waterproof abrasive paper, after rust removal is finished, spraying clear water by using a high-pressure water gun to wash and clean the surface of the sheet metal part, finally wiping the surface of the sheet metal part by using cotton cloth, and naturally drying for 15-25 minutes;
b. surface secondary treatment: performing shot blasting treatment on the surface of the pretreated sheet metal part by using a shot blasting machine, wherein the shot blasting time is 3-6 minutes, so that oxide skin impurities on the surface of the machined part are further removed;
c. electrostatic dust removal: conveying the sheet metal part subjected to the surface secondary treatment to an electrostatic dust removal chamber for electrostatic dust removal;
d. spraying a primer: carrying out UV or PU coating spraying on the surface of the sheet metal part, drying the surface of the sheet metal part after spraying, then carrying out grinding treatment on the dried surface of the sheet metal part, scraping putty on uneven parts of the surface, and grinding to be flat to form a flat primer layer;
e. spraying a middle coating: spraying intermediate layer paint on the surface of the primer layer, curing the intermediate layer paint by adopting ultraviolet rays, and polishing after the intermediate layer paint is completely dried to form a flat intermediate coating; on the surface of the primer layer;
f. spraying finish paint: vacuum coating is carried out on the surface of the middle coating to form a metal coating layer, and the metal coating layer is dried for 10-15 minutes to form finish paint;
g. polishing and waxing: and polishing the sheet metal part sprayed with the finish paint, and then waxing the sheet metal part after polishing to form the sheet metal part coated with the corrosion-resistant finish paint.
In the step a, the water sand paper with 500-600 meshes is adopted; the temperature of shot blasting treatment in the step b is 120-160 ℃; the temperature of the drying treatment in the step d is 75-85 ℃; the energy during the ultraviolet curing in the step e is 600-800mj/cm2。
Further, the thickness of the primer layer in the step d is 20-50 microns; the thickness of the middle coating in the step e is 15-25 micrometers; and the thickness of the metal coating layer in the step f is 8-16 microns.
Example 1:
a corrosion-resistant coating process of a sheet metal part for a down filling machine comprises the following steps:
a. surface pretreatment: carrying out friction rust removal on the surface of the sheet metal part by using 500-mesh waterproof abrasive paper, after the rust removal is finished, spraying clear water by using a high-pressure water gun to wash and clean the surface of the sheet metal part, finally wiping the surface of the sheet metal part by using cotton cloth, and naturally drying for 15 minutes;
b. surface secondary treatment: performing shot blasting treatment on the surface of the pretreated sheet metal part by using a shot blasting machine, wherein the shot blasting treatment temperature is 120 ℃, and the shot blasting time is 3 minutes, so that oxide skin impurities on the surface of the machined part are further removed;
c. electrostatic dust removal: conveying the sheet metal part subjected to the surface secondary treatment to an electrostatic dust removal chamber for electrostatic dust removal;
d. spraying a primer: carrying out UV or PU coating spraying on the surface of the sheet metal part, drying the surface of the sheet metal part after spraying, wherein the temperature during drying is 75 ℃, then carrying out grinding treatment on the surface of the dried sheet metal part, scraping putty on uneven parts of the surface, and grinding and flattening to form a flat primer layer;
e. spraying a middle coating: spraying on the surface of the primer layerThe intermediate layer paint is ultraviolet cured with energy of 600mj/cm2After the intermediate layer paint is completely dried and solidified, polishing treatment is carried out to form a flat intermediate coating; on the surface of the primer layer;
f. spraying finish paint: performing vacuum coating on the surface of the intermediate coating to form a metal coating layer, and drying the metal coating layer for 10 minutes to form finish;
g. polishing and waxing: and polishing the sheet metal part sprayed with the finish paint, and then waxing the sheet metal part after polishing to form the sheet metal part coated with the corrosion-resistant finish paint.
Through the process, the thickness of the primer layer of the manufactured sheet metal part is 20 microns; the thickness of the middle coating is 15 microns; the thickness of the metal coating layer is 8 microns, and finally, polishing and waxing are needed to form a high-texture metal appearance, so that the corrosion resistance effect is good, the coating layer also has excellent physical and chemical properties, the coating layer is not easy to fall off, and the service life of the down filling machine sheet metal part is prolonged.
Example 2:
a corrosion-resistant coating process of a sheet metal part for a down filling machine comprises the following steps:
a. surface pretreatment: rubbing and derusting the surface of the sheet metal part by using 550-mesh waterproof abrasive paper, after derusting is finished, spraying clear water by using a high-pressure water gun to wash and clean the surface of the sheet metal part, finally wiping the surface of the sheet metal part by using cotton cloth, and naturally drying for 20 minutes;
b. surface secondary treatment: performing shot blasting treatment on the surface of the pretreated sheet metal part by using a shot blasting machine, wherein the shot blasting treatment temperature is 140 ℃, and the shot blasting time is 4.5 minutes, so that oxide skin impurities on the surface of the machined part are further removed;
c. electrostatic dust removal: conveying the sheet metal part subjected to the surface secondary treatment to an electrostatic dust removal chamber for electrostatic dust removal;
d. spraying a primer: carrying out UV or PU coating spraying on the surface of the sheet metal part, drying the surface of the sheet metal part after spraying, wherein the temperature during drying is 80 ℃, then carrying out grinding treatment on the surface of the dried sheet metal part, scraping putty on uneven parts of the surface, and grinding and flattening to form a flat primer layer;
e. spraying a middle coating: spraying intermediate layer paint on the surface of the primer layer, and adopting ultraviolet curing intermediate layer paint, wherein the energy during ultraviolet curing is 700mj/cm2After the intermediate layer paint is completely dried and solidified, polishing treatment is carried out to form a flat intermediate coating; on the surface of the primer layer;
f. spraying finish paint: performing vacuum coating on the surface of the intermediate coating to form a metal coating layer, and drying the metal coating layer for 12 minutes to form finish;
g. polishing and waxing: and polishing the sheet metal part sprayed with the finish paint, and then waxing the sheet metal part after polishing to form the sheet metal part coated with the corrosion-resistant finish paint.
Through the process, the thickness of the primer layer of the manufactured sheet metal part is 35 microns; the thickness of the middle coating is 20 microns; the thickness of the metal coating layer is 10 microns, and finally, polishing and waxing are needed to form a high-texture metal appearance, so that the corrosion resistance effect is good, the coating layer also has excellent physical and chemical properties, the coating layer is not easy to fall off, and the service life of the down filling machine sheet metal part is prolonged.
Example 3:
a corrosion-resistant coating process of a sheet metal part for a down filling machine comprises the following steps:
a. surface pretreatment: using 600-mesh waterproof abrasive paper to rub and derust the surface of the sheet metal part, after derusting is finished, spraying clear water by using a high-pressure water gun to wash and clean the surface of the sheet metal part, finally wiping the surface of the sheet metal part by using cotton cloth, and naturally drying for 25 minutes;
b. surface secondary treatment: performing shot blasting treatment on the surface of the pretreated sheet metal part by using a shot blasting machine, wherein the shot blasting treatment temperature is 160 ℃, and the shot blasting time is 6 minutes, so that oxide skin impurities on the surface of the machined part are further removed;
c. electrostatic dust removal: conveying the sheet metal part subjected to the surface secondary treatment to an electrostatic dust removal chamber for electrostatic dust removal;
d. spraying a primer: carrying out UV or PU coating spraying on the surface of the sheet metal part, drying the surface of the sheet metal part after spraying, wherein the temperature during drying is 85 ℃, then carrying out grinding treatment on the surface of the dried sheet metal part, scraping putty on uneven parts of the surface, and grinding and flattening to form a flat primer layer;
e. spraying a middle coating: spraying intermediate layer paint on the surface of the primer layer, and adopting ultraviolet curing intermediate layer paint, wherein the energy during ultraviolet curing is 800mj/cm2After the intermediate layer paint is completely dried and solidified, polishing treatment is carried out to form a flat intermediate coating; on the surface of the primer layer;
f. spraying finish paint: performing vacuum coating on the surface of the middle coating to form a metal coating layer, and drying the metal coating layer for 15 minutes to form finish;
g. polishing and waxing: and polishing the sheet metal part sprayed with the finish paint, and then waxing the sheet metal part after polishing to form the sheet metal part coated with the corrosion-resistant finish paint.
Through the process, the thickness of the primer layer of the manufactured sheet metal part is 50 microns; the thickness of the middle coating is 25 microns; the thickness of the metal coating layer is 16 microns, and finally, polishing and waxing are needed to form a high-texture metal appearance, so that the corrosion resistance effect is good, the coating layer also has excellent physical and chemical properties, the coating layer is not easy to fall off, and the service life of the down filling machine sheet metal part is prolonged.
In conclusion, the corrosion-resistant coating process for the sheet metal part for the down filling machine, disclosed by the invention, has the advantages of good coating effect, good corrosion-resistant effect, high-texture metal appearance, excellent physical and chemical properties, difficulty in falling of a coating layer and prolonged service life of the sheet metal part for the down filling machine.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The corrosion-resistant coating process of the sheet metal part for the down filling machine is characterized by comprising the following steps of:
a. surface pretreatment: carrying out friction rust removal on the surface of the sheet metal part by using waterproof abrasive paper, after rust removal is finished, spraying clear water by using a high-pressure water gun to wash and clean the surface of the sheet metal part, finally wiping the surface of the sheet metal part by using cotton cloth, and naturally drying for 15-25 minutes;
b. surface secondary treatment: performing shot blasting treatment on the surface of the pretreated sheet metal part by using a shot blasting machine, wherein the shot blasting time is 3-6 minutes, so that oxide skin impurities on the surface of the machined part are further removed;
c. electrostatic dust removal: conveying the sheet metal part subjected to the surface secondary treatment to an electrostatic dust removal chamber for electrostatic dust removal;
d. spraying a primer: carrying out UV or PU coating spraying on the surface of the sheet metal part, drying the surface of the sheet metal part after spraying, then carrying out grinding treatment on the dried surface of the sheet metal part, scraping putty on uneven parts of the surface, and grinding to be flat to form a flat primer layer;
e. spraying a middle coating: spraying intermediate layer paint on the surface of the primer layer, curing the intermediate layer paint by adopting ultraviolet rays, and polishing after the intermediate layer paint is completely dried to form a flat intermediate coating; on the surface of the primer layer;
f. spraying finish paint: vacuum coating is carried out on the surface of the middle coating to form a metal coating layer, and the metal coating layer is dried for 10-15 minutes to form finish paint;
g. polishing and waxing: and polishing the sheet metal part sprayed with the finish paint, and then waxing the sheet metal part after polishing to form the sheet metal part coated with the corrosion-resistant finish paint.
2. The corrosion-resistant coating process for the sheet metal part for the down filling machine as claimed in claim 1, wherein the water sand paper in the step a is 500-600 mesh water sand paper.
3. The corrosion-resistant coating process for the sheet metal part for the down filling machine as claimed in claim 1, wherein the temperature of the shot blasting treatment in the step b is 120-160 ℃.
4. The corrosion-resistant coating process of the sheet metal part for the down filling machine according to claim 1, wherein the temperature during the drying treatment in the step d is 75-85 ℃.
5. The corrosion-resistant coating process of the sheet metal part for the down filling machine as claimed in claim 1, wherein the energy for ultraviolet curing in the step e is 600-800mj/cm2。
6. The corrosion-resistant coating process of the sheet metal part for the down filling machine according to claim 1, wherein the thickness of the primer layer in the step d is 20-50 micrometers.
7. The corrosion-resistant coating process of the sheet metal part for the down filling machine according to claim 1, wherein the thickness of the middle layer paint in the step e is 15-25 micrometers.
8. The corrosion-resistant coating process for the sheet metal part for the down filling machine according to claim 1, wherein the thickness of the metal coating layer in f is 8-16 microns.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116251727A (en) * | 2023-04-24 | 2023-06-13 | 张家港市金帆箱柜有限公司 | Corrosion prevention technology for machine tool protection sheet metal |
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