High-hardness nickel-free electrolytic corrosion resistant coating structure

Abstract

The utility model discloses a high-hardness nickel-free electrolytic corrosion-resistant coating structure, which comprises a pretreated product base layer and a conductive copper layer attached to the outer surface of the pretreated product base layer. According to the electroplating structure disclosed by the utility model, the passivation treatment film coating layer and the like are arranged, so that when the electroplating structure is used, the electrolytic corrosion resistant composite coating is additionally arranged on the outermost layer of the electroplating structure; the electrolytic corrosion resistant composite plating layer is composed of a decorative chromium plating layer attached by electroplating, a passivating treatment film coating layer attached by chemical plating and a sealing agent coating layer for coating, so that the brightness and attractiveness of the product can be improved by utilizing the decorative chromium plating layer; a compact protective film is formed on the surface of the plating layer through the passivating coating layer attached through chemical plating, the corrosion resistance of the plating layer is improved, the sealing agent is coated through the sealing agent coating layer, a second protective film is formed on the surface of the plating layer, and therefore the electroplating structure achieves the multi-stage electrolytic corrosion resistance protection effect.

Description

Technical Field

[0001] This utility model relates to the field of electroplating technology, specifically to a high-hardness, nickel-free, electrolytic corrosion-resistant plating structure. Background Technology

[0002] Electroplating technology is widely used in the processing field because it can improve the wear resistance, corrosion resistance, conductivity, reflectivity and aesthetics of product surfaces. Electroplating uses the principle of electrolysis to plate a layer of other metals or alloys onto the metal surface to play a protective role and improve the performance of the material. Electroplated structures are widely used in electronic products.

[0003] Electroplated structures used in common electronic products often suffer from electrolytic corrosion due to contact with users' skin and sweat, which affects the lifespan of the electroplated structure. Furthermore, it often uses a nickel plating layer to improve the hardness of the plating, but this method does not provide sufficient hardness. In addition, nickel can easily cause skin allergies and has low safety. To address these issues, we propose a novel high-hardness, nickel-free, electrolytic corrosion-resistant plating structure to provide better performance. Utility Model Content

[0004] The purpose of this invention is to provide a high-hardness, nickel-free, electrolytic corrosion-resistant coating structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-hardness, nickel-free, electrolytic corrosion-resistant plating structure, comprising a pre-treated product base layer, and further comprising...

[0006] A conductive copper layer is attached to the outer surface of the pretreated product base layer, and a product substrate layer and a three-level activation treatment surface layer are sequentially disposed on the pretreated product base layer.

[0007] A high-hardness composite coating is attached to the outer surface of a conductive copper layer, and a high-density white copper tin layer and a high-density platinum layer are sequentially disposed on the high-hardness composite coating.

[0008] An electrolytic corrosion resistant composite coating is attached to the outer surface of a high-hardness composite coating. The electrolytic corrosion resistant composite coating is provided with a decorative chromium plating layer, a passivation coating layer and a sealant coating layer in sequence.

[0009] Furthermore, the three-stage activation treatment surface layer is disposed on the outer surface of the product substrate layer, and the three-stage activation treatment surface layer undergoes degreasing treatment, pickling treatment and water washing treatment.

[0010] Furthermore, the high-density white copper tin layer is electroplated on the outer surface of the conductive copper layer, and the high-density platinum layer is electroplated on the outer surface of the high-density white copper tin layer.

[0011] Furthermore, the decorative chromium plating layer is electroplated onto the outer surface of the high-density platinum layer.

[0012] Furthermore, the passivation coating layer is chemically plated onto the outer surface of the decorative chromium plating layer, and the sealant coating layer is coated onto the outer surface of the passivation coating layer.

[0013] Furthermore, the passivation coating layer is made of chromate.

[0014] Furthermore, the material of the sealing agent coating layer is grease.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This high-hardness, nickel-free, electrolytic corrosion-resistant plating structure optimizes its structure by incorporating a high-density platinum layer. On one hand, the outermost layer of the electroplated structure features an electrolytic corrosion-resistant composite plating layer. This composite plating layer consists of an electroplated decorative chromium layer, a chemically plated passivation coating layer, and a sealed agent coating layer. The decorative chromium layer enhances the product's gloss and aesthetics, while the chemically plated passivation coating layer forms a dense protective film on the plating surface, improving corrosion resistance. Finally, the sealed agent coating layer creates a second protective film, preventing environmental erosion. This multi-level electrolytic corrosion protection extends the lifespan of the electroplated structure. On the other hand, to improve lifespan, after electroplating a common conductive copper layer onto the product surface, a high-hardness composite plating layer consisting of a high-density white copper tin layer and a high-density platinum layer is added. This achieves the advantage of high hardness in the electroplated structure. Furthermore, by using a high-hardness composite plating layer instead of the common nickel-containing electroplating reinforcement structure, the electroplated structure will not cause skin allergies to users due to nickel content, thus improving safety. In addition, by setting the pre-treated product base layer as the product substrate layer surface treatment to a three-level activation treatment surface layer before electroplating, the degreasing, pickling, and water washing treatments on the product surface can remove dust, oxides, etc., which is beneficial to improving the electroplating adhesion of the product, facilitating subsequent electroplating operations, and improving the electroplating effect and uniformity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a partial three-dimensional cross-sectional structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the base layer of the pretreatment product of this utility model;

[0019] Figure 3This is a schematic diagram of the internal structure of the high-hardness composite coating of this utility model.

[0020] Figure 4 This is a schematic cross-sectional view of the internal structure of the electrolytic corrosion resistant composite coating of this utility model.

[0021] In the figure: 1. Electrolytic corrosion resistant composite coating; 2. High hardness composite coating; 3. Conductive copper layer; 4. Pre-treated product base layer; 5. Three-stage activation treatment surface layer; 6. Product substrate layer; 7. High-density white copper tin layer; 8. High-density platinum layer; 9. Decorative chromium plating layer; 10. Passivation treatment coating layer; 11. Sealing agent coating layer. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0025] Please see Figure 1-4 One embodiment of this utility model provides: a high-hardness nickel-free electrolytic corrosion resistant coating structure, including a pre-treated product base layer 4, and further including...

[0026] A conductive copper layer 3 is attached to the outer surface of the pretreated product base layer 4. A product substrate layer 6 and a three-level activation treatment surface layer 5 are sequentially disposed on the pretreated product base layer 4.

[0027] In use, by setting the pre-treated product base layer 4 as the product substrate layer 6 and the surface treatment of the three-level activation treatment surface layer 5 to be electroplated, the degreasing treatment, pickling treatment and water washing treatment of the product surface can remove dust, oxides and other substances from the surface to be electroplated. This is beneficial to improving the electroplating adhesion of the product, facilitating subsequent electroplating operations, and improving the electroplating effect and uniformity.

[0028] High-hardness composite coating 2 is attached to the outer surface of conductive copper layer 3. High-density white copper tin layer 7 and high-density platinum layer 8 are sequentially disposed on high-hardness composite coating 2.

[0029] In use, after electroplating a common conductive copper layer 3 onto the product surface, a high-hardness composite plating layer 2 consisting of a high-density white copper tin layer 7 and a high-density platinum layer 8 is added. This achieves the advantage of high hardness in the electroplating structure. Furthermore, by setting the high-hardness composite plating layer 2 to replace the common nickel-containing electroplating reinforcement structure, the electroplating structure will not cause skin allergies to users due to nickel content, thus improving safety in use.

[0030] Electrolytic corrosion resistant composite coating 1 is attached to the outer surface of high hardness composite coating 2. The electrolytic corrosion resistant composite coating 1 is provided with a decorative chromium plating layer 9, a passivation treatment coating layer 10 and a sealing agent coating layer 11 in sequence.

[0031] In use, an electrolytic corrosion resistant composite coating 1 is added to the outermost layer of the electroplated structure. The electrolytic corrosion resistant composite coating 1 consists of an electroplated decorative chromium plating layer 9, a chemically plated passivation coating layer 10, and a coated sealant coating layer 11. The decorative chromium plating layer 9 can enhance the product's gloss and aesthetics. The chemically plated passivation coating layer 10 forms a dense protective film on the coating surface, improving the coating's corrosion resistance. Furthermore, the sealant coating layer 11 applies a sealant, forming a second protective film on the coating surface to prevent environmental factors from corroding the coating. This enables the electroplated structure to achieve multi-level electrolytic corrosion resistant protection, which helps extend the service life of the electroplated structure.

[0032] The three-level activation treatment surface layer 5 is disposed on the outer surface of the product substrate layer 6. The three-level activation treatment surface layer 5 is subjected to degreasing treatment, pickling treatment and water washing treatment.

[0033] A high-density white copper tin layer 7 is electroplated on the outer surface of the conductive copper layer 3, and a high-density platinum layer 8 is electroplated on the outer surface of the high-density white copper tin layer 7.

[0034] Decorative chrome plating 9 is electroplated on the outer surface of high-density platinum plating 8;

[0035] The passivation coating layer 10 is electrolessly plated on the outer surface of the decorative chromium plating layer 9, and the sealant coating layer 11 is coated on the outer surface of the passivation coating layer 10.

[0036] The passivation coating layer 10 is made of chromate.

[0037] The material of the sealant coating layer 11 is grease.

[0038] The working principle of this utility model is as follows: First, the pre-treated product base layer 4 is set as the product substrate layer 6, and the surface is treated with a three-level activation treatment surface layer 5 to be electroplated. The degreasing, pickling, and washing treatments on the product surface can remove dust, oxides, etc., which is beneficial to improving the electroplating adhesion, subsequent electroplating operations, and improving the electroplating effect and uniformity. Simultaneously, by adding an electrolytic corrosion resistant composite coating 1 to the outermost layer of the electroplating structure, and by using an electroplated decorative chromium plating layer 9, a chemically plated passivation coating layer 10, and a sealed coating layer 11, the decorative chromium plating layer 9 enhances the product's gloss and aesthetics, while the chemically plated passivation coating layer 10 further enhances the product's gloss and aesthetics. Film layer 10 forms a dense protective film on the coating surface, improving the corrosion resistance of the coating. Furthermore, a second protective film is formed on the coating surface by applying a sealant through sealant coating layer 11, preventing environmental factors from corroding the coating. This enables the electroplating structure to achieve multi-level electrolytic corrosion protection, which helps to extend the service life of the electroplating structure. In addition, by electroplating a common conductive copper layer 3 on the product surface, and then plating a high-hardness composite coating 2 composed of a high-density white copper tin layer 7 and a high-density platinum layer 8, the high hardness advantage of the electroplating structure can be achieved. Moreover, by setting a high-hardness composite coating 2 instead of a common nickel-containing electroplating reinforcement structure, the electroplating structure will not cause skin allergies to users due to nickel content, thus improving the safety of use.

[0039] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0042] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-hardness, nickel-free, electrolytic corrosion-resistant plating structure, comprising a pre-treated product base layer (4), characterized in that: Also includes A conductive copper layer (3) is attached to the outer surface of a pretreated product base layer (4). A product substrate layer (6) and a three-level activation treatment surface layer (5) are sequentially disposed on the pretreated product base layer (4). A high-hardness composite coating (2) is attached to the outer surface of a conductive copper layer (3). A high-density white copper tin layer (7) and a high-density platinum layer (8) are sequentially disposed on the high-hardness composite coating (2). Electrolytic corrosion resistant composite coating (1) is attached to the outer surface of high hardness composite coating (2). The electrolytic corrosion resistant composite coating (1) is provided with a decorative chromium plating layer (9), a passivation treatment coating layer (10) and a sealant coating layer (11) in sequence.

2. The high-hardness nickel-free electrolytic corrosion-resistant plating structure according to claim 1, characterized in that, The three-stage activation treatment surface layer (5) is disposed on the outer surface of the product substrate layer (6), and the three-stage activation treatment surface layer (5) is subjected to degreasing treatment, pickling treatment and water washing treatment.

3. The high-hardness nickel-free electrolytic corrosion-resistant plating structure according to claim 1, characterized in that, The high-density white copper tin layer (7) is electroplated on the outer surface of the conductive copper layer (3), and the high-density platinum layer (8) is electroplated on the outer surface of the high-density white copper tin layer (7).

4. The high-hardness nickel-free electrolytic corrosion-resistant plating structure according to claim 1, characterized in that, The decorative chrome plating layer (9) is electroplated on the outer surface of the high-density platinum layer (8).

5. The high-hardness nickel-free electrolytic corrosion-resistant coating structure according to claim 1, characterized in that, The passivation coating layer (10) is chemically plated on the outer surface of the decorative chromium plating layer (9), and the sealant coating layer (11) is coated on the outer surface of the passivation coating layer (10).

6. The high-hardness nickel-free electrolytic corrosion-resistant plating structure according to claim 1, characterized in that, The passivation coating layer (10) is made of chromate.

7. The high-hardness nickel-free electrolytic corrosion-resistant plating structure according to claim 1, characterized in that, The material of the sealing agent coating layer (11) is grease.

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