High-wear-resistant and corrosion-resistant composite reinforced layer structure on metal surface

Abstract

The utility model discloses a metal surface high-wear-resistance and corrosion-resistance composite strengthening layer structure which comprises a base metal layer made of a common base metal material; the transition layer is formed on the surface of the matrix metal layer so as to enhance the bonding strength of the matrix metal and the strengthening layer; the strengthening layer is deposited on the transition layer, and the strengthening layer is made of a high-abrasion-resistant and corrosion-resistant material; the composite coating is doped with carbon fibers and is arranged on the surface of the strengthening layer; and the protective layer is additionally arranged outside the composite coating, so that the surface performance is further improved. According to the high-wear-resistance and corrosion-resistance composite reinforcing layer structure for the metal surface, the wear resistance and the corrosion resistance of the metal surface are remarkably improved through the composite reinforcing layer structure; due to the arrangement of the transition layer and the protection layer, the binding force between different layers and the overall durability are effectively enhanced; the method is suitable for metal parts in various severe environments, the reliability is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of metal surface hardening treatment, in particular to a high wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface. Background Art

[0002] In complex working conditions, fluid equipment is long-term affected by multiple factors such as erosion wear, corrosion and cavitation. Local metal pipe fittings of equipment components are prone to loss. In the light case, it affects work efficiency, the fluid delivery flow rate decreases, and pipe fittings need to be replaced frequently, increasing the equipment inspection and maintenance cost. In the heavy case, it causes local perforation of parts, inducing safety accidents or abnormal shutdown accidents, resulting in heavy losses. For the existing equipment inspection and maintenance technologies, they are mostly replacing damaged pipe fittings, or surfacing the damaged parts of pipe fittings, or filling the damaged parts with welding steel plates, or filling ceramic chips. These mechanical traditional methods often have high costs and long cycles, seriously shortening the equipment life, and it is difficult to fill complex shape defects, and there are inevitable defects such as unstable structure. There are also using polymer materials to fill the damaged parts, but their adhesion is poor, and the structural strength is insufficient. After forming, there are defects such as peeling, cracking and bubbling of the wear-resistant layer, and the use effect is unstable.

[0003] Therefore, designing a high wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface to improve the wear resistance and corrosion resistance of metal pipe fittings and metal parts is an urgent problem to be solved at present. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface to solve one or more of the above problems.

[0005] To achieve the above purpose, the utility model provides a high wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface, including:

[0006] A base metal layer, which is a common base metal material;

[0007] A transition layer, which forms a transition layer on the surface of the base metal layer to enhance the bonding strength between the base metal and the strengthening layer;

[0008] A strengthening layer, which deposits a strengthening layer on the transition layer, and this layer is composed of high wear-resistant and corrosion-resistant materials;

[0009] A composite coating, which is doped with carbon fiber and is arranged on the surface of the strengthening layer;

[0010] A protective layer, which is additionally arranged outside the composite coating to further improve the surface performance.

[0011] Preferably, in the above-mentioned high-wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface, the transition layer usually adopts electroless plating or physical vapor deposition technology, and the material can be titanium nitride or chromium nitride, with a thickness of 1-5 micrometers.

[0012] Preferably, in the above-mentioned high-wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface, the common materials of the strengthening layer include ceramic coatings, such as silicon nitride and chromium nitride, with a thickness of 5-20 micrometers.

[0013] Preferably, in the above-mentioned high-wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface, the composite coating material includes tungsten carbide, with a thickness of 10-30 micrometers.

[0014] Preferably, in the above-mentioned high-wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface, the protective layer materials include zirconium coatings and aluminum oxides, with a thickness of 2-10 micrometers.

[0015] Therefore, the present utility model adopts the above-mentioned high-wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface, which significantly improves the wear resistance and corrosion resistance of the metal surface through the composite strengthening layer structure; the setting of the transition layer and the protective layer effectively enhances the bonding force and overall durability between different layers; the strengthening layer and the composite coating ensure the wear resistance and corrosion resistance of the substrate. Blending materials such as carbon fibers in the composite coating can increase the impact resistance and tensile resistance of the coating and improve the flexural resistance of the coating; it is applicable to metal components in various harsh environments, improves their reliability and service life, and solves the problem that it is inconvenient to repair and replace metal parts after wear at present.

[0016] Next, through the drawings and embodiments, the technical solutions of the present utility model will be further described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of an embodiment of the high-wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface of the present utility model;

[0018] Figure 2 is a schematic diagram of the overall cross-sectional structure of an embodiment of the high-wear-resistant and corrosion-resistant composite strengthening layer structure on the metal surface of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions of the present utility model will be further described below through the drawings and embodiments.

[0020] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the ordinary meanings understood by those of ordinary skill in the field to which this utility model pertains. The "first", "second" and similar terms used in this utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0021] Refer to the attached Figure 1-2 As shown, this application provides a high wear-resistant and corrosion-resistant composite strengthening layer structure for a metal surface, including:

[0022] A base metal layer 1, which is a common base metal material;

[0023] A transition layer 2, which forms a transition layer 2 on the surface of the base metal layer 1 to enhance the bonding strength between the base metal and the strengthening layer; the transition layer 2 usually adopts electroless plating or physical vapor deposition technology, and the material can be titanium nitride, chromium nitride, with a thickness of 1-5 microns; the transition layer usually has good adhesion and thermal shock resistance, and can reduce the interfacial stress caused by different thermal expansion coefficients.

[0024] A strengthening layer 3, which deposits a strengthening layer 3 on the transition layer 2, and this layer is composed of high wear-resistant and corrosion-resistant materials; the commonly used materials for the strengthening layer 3 include ceramic coatings, such as silicon nitride, chromium nitride, with a thickness of 5-20 microns. Specifically, the thickness and material of the strengthening layer 3 can be optimized according to the usage requirements to achieve the best wear-resistant and corrosion-resistant effects.

[0025] A composite coating 4, which is doped with carbon fibers and is arranged on the surface of the strengthening layer 3; the material of the composite coating 4 includes tungsten carbide, with a thickness of 10-30 microns. The protective layer material includes zirconium coating, aluminum oxide, with a thickness of 2-10 microns; titanium carbide (TiC), titanium nitride (TiN), etc. can also be selected, and these materials can significantly improve the surface hardness and wear resistance.

[0026] A protective layer 5, which additionally sets a protective layer 5 outside the composite coating 4 to further improve the surface performance; it can be a coating or a chemical conversion film to enhance corrosion resistance or provide other special functions, such as self-lubricating characteristics.

[0027] In a specific embodiment, the base metal is high-strength steel, the transition layer 2 is made of titanium nitride (TiN), the strengthening layer 3 is a chromium nitride (CrN) coating with a thickness of 15 microns, the composite coating 4 is tungsten carbide doped with carbon fiber with a thickness of 20 microns, and the protective layer 5 is aluminum oxide (Al2O3) with a thickness of 5 microns. This structure is used for high-load mechanical components. Tests have shown that it has remarkable wear and corrosion resistance, and can effectively extend the service life of the components.

[0028] Therefore, the present utility model adopts a metal surface high-wear-resistant and corrosion-resistant composite strengthening layer structure with the above structure, which significantly improves the wear and corrosion resistance of the metal surface through the composite strengthening layer structure; the setting of the transition layer and the protective layer effectively enhances the bonding force and overall durability between different layers; the strengthening layer and the composite coating ensure the wear and corrosion resistance of the base body. Mixing carbon fiber in the composite coating can increase the impact resistance and tensile resistance of the coating, and improve the flexural resistance of the coating; it is applicable to metal components in various harsh environments, improves their reliability and service life, and solves the problem that it is inconvenient to repair and replace metal parts after wear at present.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present utility model, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A high wear-resistant and corrosion-resistant composite strengthening layer structure on a metal surface, characterized in that, Including: A base metal layer, which is a common base metal material; An intermediate layer, which forms an intermediate layer on the surface of the base metal layer to enhance the bonding strength between the base metal and the strengthening layer; A strengthening layer, which deposits a strengthening layer on the intermediate layer, and this layer is composed of materials with high wear resistance and corrosion resistance; A composite coating, which is doped with carbon fibers and is disposed on the surface of the strengthening layer; A protective layer, which is additionally provided with a protective layer outside the composite coating to further improve the surface performance.

2. A high wear-resistant and corrosion-resistant composite strengthening layer structure on a metal surface according to claim 1, characterized in that, The intermediate layer adopts electroless plating or physical vapor deposition technology, and its thickness is 1 - 5 microns.

3. A high wear-resistant and corrosion-resistant composite strengthening layer structure on a metal surface according to claim 2, characterized in that, The common materials of the strengthening layer include ceramic coatings, and its thickness is 5 - 20 microns.

4. A high wear-resistant and corrosion-resistant composite strengthening layer structure on a metal surface according to claim 3, characterized in that, The composite coating material includes tungsten carbide, and its thickness is 10 - 30 microns.

5. A high wear-resistant and corrosion-resistant composite strengthening layer structure on a metal surface according to claim 4, characterized in that, The thickness of the protective layer is 2 - 10 microns.

Images