Multi-layer protective coating structure for surface treatment of metal products

Abstract

This utility model discloses a multi-layer protective coating structure for surface treatment of metal products, including a metal product body and a protective mechanism disposed on the surface of the metal product body. The protective mechanism includes a surface coating structure, an intermediate coating structure, and an inner coating structure disposed sequentially on the surface of the metal product body. This utility model provides a bottom layer with cross-shaped limiting strips on the surface of the metal product from the inside out, which provides limiting support for the overall shape of the bottom layer and reduces the deformation of the bottom layer. A middle layer with diamond-shaped support strips is provided to divide the middle layer equally, ensuring stable connection with the bottom layer and the surface layer. A surface layer with rubber pads is provided to provide buffer protection for the surface of the metal product and prevent damage caused by direct impact when subjected to external forces.

Description

Technical Field

[0001] This utility model relates to the field of metal product surface treatment technology, specifically to a multi-layer protective coating structure for metal product surface treatment. Background Technology

[0002] Metal products refer to finished or semi-finished products made primarily from metal materials through a series of physical or mechanical processing techniques such as casting, forging, stamping, cutting, welding, and machining.

[0003] Metal products require surface treatment during the manufacturing process. Specifically, this refers to the process of applying a coating or forming a conversion film on the surface of the metal product substrate through physical, chemical, or electrochemical methods to give the product new surface properties and achieve specific functions. The main purpose is to prevent the metal from reacting with water vapor, oxygen, chemicals, etc. in the environment, thereby resisting corrosion and rust and extending the product's service life.

[0004] However, traditional coatings (especially soft substrates) mainly rely on the material's own adhesion and cohesion to maintain their shape. When subjected to thermal stress, mechanical stress, or substrate deformation, they are prone to cracking, blistering, or even peeling. In addition, the layers are mainly bound together by physical adsorption and intermolecular forces, which can easily lead to interlayer separation under complex working conditions. To address these issues, a multi-layer protective coating structure for metal product surface treatment is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a multi-layer protective coating structure for the surface treatment of metal products, so as to solve the problems of weak mechanical properties, easy deformation, and low interlayer bonding and functional synergy mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A multi-layer protective coating structure for surface treatment of metal products includes a metal product body and a protective mechanism disposed on the surface of the metal product body. The protective mechanism includes a surface coating structure, an intermediate coating structure and an inner coating structure disposed sequentially on the surface of the metal product body.

[0007] Preferably, the surface coating structure includes a surface layer disposed on the outermost side of the metal product body, which prevents the metal product body from powdering and discoloration and resists friction and scratches, and the surface layer is provided with rubber pads arranged in a linear pattern.

[0008] Preferably, the intermediate coating structure includes an intermediate layer disposed on the surface of the top layer, which forms a thicker physical barrier for the protective mechanism, blocking the penetration of water, oxygen and corrosive substances. The intermediate layer is provided with a diamond-shaped support strip, and a connecting block is provided at the node of the support strip.

[0009] Preferably, the inner coating structure includes a bottom layer disposed on the surface of the metal product body, which fills the tiny pores on the surface of the metal product body and inhibits its surface rusting. A cross-shaped limiting strip is disposed on the bottom layer, and microcapsules are nested on the limiting strip.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides a bottom layer with cross-shaped limiting strips from the inside to the bottom layer on the surface of the metal product, which limits and supports the overall shape of the bottom layer and reduces the deformation of the bottom layer. A middle layer with diamond-shaped support strips is provided to divide the middle layer equally, ensuring the stable connection with the bottom layer and the top layer. A top layer with rubber pads is provided to buffer and protect the surface of the metal product, preventing damage caused by direct impact when subjected to external forces.

[0011] 2. This utility model sets microcapsules on the bottom limiting strip. The microcapsules are filled with corrosion inhibitors, resins and other repair agents. When the coating is intact, the microcapsules are protected in the bottom layer. When the coating is scratched or cracked, the microcapsules rupture, the repair agent flows out and polymerizes, and plays a certain repair role. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the surface layer structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the intermediate layer in an embodiment of the present invention; Figure 4 This is a schematic diagram of the underlying structure of an embodiment of the present utility model.

[0013] In the diagram: 1. Top layer; 101. Rubber pad; 2. Middle layer; 201. Connecting block; 202. Support strip; 3. Bottom layer; 301. Limiting strip; 302. Microcapsule; 4. Metal product body. Detailed Implementation

[0014] To facilitate the solution of the problem, this utility model provides a multi-layer protective coating structure for the surface treatment of metal products. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0015] Example like Figures 1 to 4 As shown, this embodiment provides a multi-layer protective coating structure for the surface treatment of metal products, including a metal product body 4 and a protective mechanism disposed on the surface of the metal product body 4. The protective mechanism includes a surface coating structure, an intermediate coating structure and an inner coating structure disposed sequentially on the surface of the metal product body 4.

[0016] The metal product body 4 is provided with an inner coating structure, an intermediate coating structure and a surface coating structure from the inside to the outside, which together provide protection for the metal product body 4.

[0017] Reference Figure 1 and Figure 2 As one embodiment of this utility model, specifically, the surface coating structure includes a surface layer 1 disposed on the outermost side of the surface of the metal product body 4, which is made of polyurethane material, and plays a role in preventing powdering and discoloration and resisting friction and scratches on the metal product body 4.

[0018] Among them, the surface layer 1 can also be made of the following materials: Fluorocarbon topcoat offers top-notch weather resistance and an extremely long service life. Due to its superior performance, it is often used in landmark buildings, cross-sea bridges, and other applications requiring ultra-long service life. Acrylic topcoat has good weather resistance and a moderate price, and is commonly used in general outdoor environments. Epoxy topcoat has excellent wear and chemical resistance, but poor weather resistance (it is prone to chalking) and is usually used in indoor or underground environments.

[0019] Furthermore, the surface layer 1 is provided with rubber pads 101 arranged in a linear pattern.

[0020] By setting a surface layer 1 with rubber pads 101, the surface of the metal product is buffered and protected, preventing damage caused by direct impact when subjected to external forces.

[0021] Reference Figure 1 and Figure 3 As one embodiment of this utility model, specifically, the intermediate coating structure includes an intermediate layer 2 disposed on the surface of the surface layer 1, which is made of epoxy thick paste material to build a thicker physical barrier for the protective mechanism, blocking the penetration of water, oxygen and corrosive substances.

[0022] Furthermore, the intermediate layer 2 is provided with a support strip 202 in a diamond shape, and a connecting block 201 is provided at the node of the support strip 202.

[0023] By setting an intermediate layer 2 with diamond-shaped support strips 202, the intermediate layer 2 is divided equally, ensuring a stable connection with the bottom layer 3 and the top layer 1.

[0024] Reference Figure 1 and Figure 4 As one embodiment of this utility model, specifically, the inner coating structure includes a bottom layer 3 disposed on the surface of the metal product body 4, which is made of epoxy zinc phosphate material, to fill the tiny pores on the surface of the metal product body 4 and inhibit its surface rusting.

[0025] Furthermore, a cross-shaped limiting strip 301 is provided on the bottom layer 3, and a microcapsule 302 is nested on the limiting strip 301.

[0026] By setting a bottom layer 3 with a cross-shaped limiting strip 301, the overall shape of the bottom layer 3 is limited and supported, reducing the deformation of the bottom layer 3.

[0027] Working principle: First, the bottom layer 3, the middle layer 2 and the top layer 1 are sprayed onto the surface of the metal product body 4 in sequence (this new type takes a plate-shaped metal product as an example). During the spraying process, the limiting strip 301, the support strip 202 and the rubber pad 101 are set in the corresponding positions in sequence. During the use of metal products after spraying, the surface layer 1 with rubber pad 101 plays a buffering and protective role on the surface of the metal products, preventing damage caused by direct impact when subjected to external forces. The intermediate layer 2 with diamond-shaped support strips 202 divides the intermediate layer 2 equally, ensuring a stable connection with the bottom layer 3 and the top layer 1. The bottom layer 3 with the cross-shaped limiting strip 301 provides limiting support for the overall shape of the bottom layer 3, reducing the deformation of the bottom layer 3. In addition, microcapsules 302 are set on the limiting strip 301 of the bottom layer 3. The microcapsules 302 are filled with corrosion inhibitors, resins and other repair agents. When the coating is intact, the microcapsules 302 are protected inside the bottom layer 3. When the coating is scratched or cracked, the microcapsules 302 rupture, the repair agent flows out and polymerizes, playing a certain repair role.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-layer protective coating structure for surface treatment of metal products, characterized in that: Includes the metal product body (4) and the protective mechanism disposed on the surface of the metal product body (4); The protective mechanism includes a surface coating structure, an intermediate coating structure and an inner coating structure that are sequentially disposed on the surface of the metal product body (4).

2. The multi-layer protective coating structure for surface treatment of metal products according to claim 1, characterized in that: The surface coating structure includes a surface layer (1) disposed on the outermost side of the metal product body (4), which prevents the metal product body (4) from powdering and discoloration and resists friction and scratches.

3. The multi-layer protective coating structure for surface treatment of metal products according to claim 2, characterized in that: The surface layer (1) is provided with rubber pads (101) arranged in a linear pattern.

4. The multi-layer protective coating structure for surface treatment of metal products according to claim 1, characterized in that: The intermediate coating structure includes an intermediate layer (2) disposed on the surface of the surface layer (1), which forms a thicker physical barrier for the protective mechanism, blocking the penetration of water, oxygen and corrosive substances.

5. The multi-layer protective coating structure for surface treatment of metal products according to claim 4, characterized in that: The intermediate layer (2) is provided with a support strip (202) in a diamond shape, and a connecting block (201) is provided at the node of the support strip (202).

6. The multi-layer protective coating structure for surface treatment of metal products according to claim 1, characterized in that: The inner coating structure includes a bottom layer (3) disposed on the surface of the metal product body (4) to fill the tiny pores on the surface of the metal product body (4) and inhibit its surface rusting.

7. The multi-layer protective coating structure for surface treatment of metal products according to claim 6, characterized in that: A cross-shaped limiting strip (301) is provided on the bottom layer (3), and a microcapsule (302) is nested on the limiting strip (301).

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