Anti-shedding wear-resistant coating boiler pipe structure

Abstract

This utility model relates to the field of boiler pipeline technology, specifically to a boiler pipeline structure with an anti-detachment wear-resistant coating. The structure includes a pipeline with multiple sets of symmetrically arranged fiber anchors fixedly inserted into its inner wall. A first sandblasted layer is bonded to the inner wall of the pipeline. An adhesive underlayer is bonded to the inner wall of the first sandblasted layer. A second sandblasted layer is bonded to the inner wall of the adhesive underlayer. A transition layer is bonded to the inner wall of the second sandblasted layer. A wear-resistant surface layer is bonded to the inner wall of the transition layer. This utility model, through multiple sets of fiber anchors penetrating the first sandblasted layer, the adhesive underlayer, the second sandblasted layer, and extending to the transition layer, combined with the rough interface formed by multi-layer sandblasting, significantly enhances the bonding strength between each coating and the inner wall of the pipeline, as well as between the coatings themselves. This effectively avoids coating detachment caused by temperature changes and media erosion during boiler operation, extending the overall service life of the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of boiler pipe technology, specifically to a boiler pipe structure with an anti-shedding and wear-resistant coating. Background Technology

[0002] Boiler pipes are subjected to the scouring and erosion of high-temperature flue gas, dust particles and corrosive media for a long time during operation. Traditional pipe inner wall coatings are often prone to peeling and wear due to insufficient bonding strength and limited wear resistance.

[0003] In existing technologies, single coating structures cannot simultaneously ensure high-temperature stability and mechanical strength. For example, pure metal coatings have insufficient wear resistance, while ceramic coatings, although wear-resistant, are brittle and prone to detachment due to thermal stress, resulting in a shortened pipeline service life, increased equipment maintenance costs, and safety hazards. To address these issues, our anti-detachment wear-resistant coating boiler pipeline structure solves these problems. Utility Model Content

[0004] The purpose of this invention is to provide a boiler pipe structure with an anti-shedding and wear-resistant coating to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is: a boiler pipe structure with anti-detachment and wear-resistant coating, including a pipe, wherein multiple sets of symmetrically arranged fiber anchors are fixedly inserted into the inner wall of the pipe, a first sandblasted layer is adhered to the inner wall of the pipe, an adhesive underlayer is adhered to the inner wall of the first sandblasted layer, a second sandblasted layer is adhered to the inner wall of the adhesive underlayer, a transition layer is adhered to the inner wall of the second sandblasted layer, and a wear-resistant surface layer is adhered to the inner wall of the transition layer.

[0006] Preferably, the other end of each of the multiple sets of fiber anchors passes through the first sandblasting layer, the bonding underlayer, the second sandblasting layer and extends into the interior of the transition layer, and the surfaces of each of the multiple sets of fiber anchors are fixedly bonded to the interior of the first sandblasting layer, the bonding underlayer, the second sandblasting layer and the transition layer.

[0007] Preferably, the adhesive underlayer is made of a nickel-based alloy material and has a thickness of 50-100 μm.

[0008] Preferably, the transition layer is made of a metal-ceramic composite material and has a thickness of 100-200 μm.

[0009] Preferably, the wear-resistant surface layer is made of high-hardness ceramic material and has a thickness of 200-500μm.

[0010] This utility model provides an improved boiler pipe structure with an anti-shedding and wear-resistant coating, which has the following improvements and advantages compared with the prior art:

[0011] Firstly, this utility model uses multiple sets of fiber anchors that penetrate the first sandblasted layer, the bonding underlayer, the second sandblasted layer, and extend to the transition middle layer. Combined with the rough interface formed by multi-layer sandblasting, it significantly enhances the bonding strength between each coating and the inner wall of the pipe, as well as between the coatings themselves. This effectively avoids the problem of coating peeling caused by temperature changes and media scouring during boiler operation, and extends the overall service life of the pipe.

[0012] Secondly, this utility model uses a wear-resistant surface layer of high-hardness ceramic material to directly withstand the erosion of the medium, combined with a transitional middle layer of metal-ceramic composite material to buffer stress, and a nickel-based alloy bonding bottom layer to provide stable support. Under the synergistic effect of the multi-layer structure, the wear resistance of the inner wall of the pipe is greatly improved, which can effectively resist the long-term wear of high-temperature flue gas, dust and other media in the boiler, and ensure the stability and safety of the pipeline operation. Attached Figure Description

[0013] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0014] Figure 1 This is a front view structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram illustrating the material layer of this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Pipe; 2. Fiber anchor; 3. First sandblasted layer; 4. Bonding underlayer; 5. Second sandblasted layer; 6. Transition intermediate layer; 7. Wear-resistant surface layer. Detailed Implementation

[0018] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0019] This utility model improves the structure of boiler pipes with anti-shedding and wear-resistant coatings. The technical solution of this utility model is as follows:

[0020] like Figure 1 - Figure 2As shown, the anti-detachment wear-resistant coating boiler pipe structure includes a pipe 1. Multiple sets of symmetrically arranged fiber anchors 2 are fixedly inserted into the inner wall of the pipe 1. A first sandblasted layer 3 is bonded to the inner wall of the pipe 1. An adhesive underlayer 4 is bonded to the inner wall of the first sandblasted layer 3. A second sandblasted layer 5 is bonded to the inner wall of the adhesive underlayer 4. A transition layer 6 is bonded to the inner wall of the second sandblasted layer 5. A wear-resistant surface layer 7 is bonded to the inner wall of the transition layer 6.

[0021] Furthermore, the other ends of the multiple sets of fiber anchors 2 pass through the first sandblasted layer 3, the bonding underlayer 4, the second sandblasted layer 5, and extend into the interior of the transition layer 6. The surfaces of the multiple sets of fiber anchors 2 are fixedly bonded to the interior of the first sandblasted layer 3, the bonding underlayer 4, the second sandblasted layer 5, and the transition layer 6, respectively. The other ends of the multiple sets of fiber anchors 2 pass through each layer and are fixedly bonded to the interior. This can significantly enhance the mechanical interlocking force and interfacial bonding strength between the first sandblasted layer 3, the bonding underlayer 4, the second sandblasted layer 5, and the transition layer 6 in the coating system, effectively prevent delamination and peeling between the coatings, and improve the overall structural stability and impact resistance of the coating.

[0022] Furthermore, the bonding substrate 4 is made of nickel-based alloy material with a thickness of 50-100μm. The excellent chemical stability and interfacial bonding ability of the nickel-based alloy can ensure that it forms a firm bond with the substrate and the adjacent first sandblasting layer 3 and second sandblasting layer 5.

[0023] Furthermore, the transition layer 6 is made of metal-ceramic composite material with a thickness of 100-200μm. Metal-ceramic material combines the toughness of metal with the hardness of ceramic. This thickness of transition layer can effectively alleviate the material performance difference between the bonding bottom layer 4 and the wear-resistant surface layer 7.

[0024] Furthermore, the wear-resistant surface layer 7 is made of high-hardness ceramic material with a thickness of 200-500μm. High-hardness ceramic itself has extremely strong wear resistance, and the thickness of 200-500μm can ensure that the surface layer can withstand long-term friction.

[0025] Working principle: Multiple sets of fiber anchors 2 on the inner wall of pipe 1 penetrate through the first sandblasted layer 3, the bonding underlayer 4, the second sandblasted layer 5, and extend into the transition layer 6, forming a mechanical anchoring structure. Combined with the rough interface formed by sandblasting, this significantly improves the bonding strength between each coating and the substrate of pipe 1 and between the coatings, structurally preventing the overall coating from falling off. The bonding underlayer 4 is made of nickel-based alloy, which utilizes its high-temperature stability and good wettability to achieve a tight bond with the substrate of pipe 1 and the transition layer. The transition layer 6 is made of metal-ceramic composite material, which combines the toughness of metal and the wear resistance of ceramic. It can buffer thermal stress under high temperature and avoid cracking caused by the difference in thermal expansion coefficients between the substrate and the surface material. The wear-resistant surface layer 7 is made of high-hardness ceramic material, which directly bears the scouring of the medium and plays the main role in wear resistance.

[0026] The foregoing description enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A boiler pipe structure with anti-shedding and wear-resistant coating, comprising pipe (1), characterized in that: The inner wall of the pipe (1) is fixedly inserted with multiple sets of symmetrically arranged fiber anchors (2). The inner wall of the pipe (1) is bonded with a first sandblasting layer (3). The inner wall of the first sandblasting layer (3) is bonded with an adhesive underlayer (4). The inner wall of the adhesive underlayer (4) is bonded with a second sandblasting layer (5). The inner wall of the second sandblasting layer (5) is bonded with a transition layer (6). The inner wall of the transition layer (6) is bonded with a wear-resistant surface layer (7).

2. The anti-shedding wear-resistant coating boiler pipe structure according to claim 1, characterized in that: The other ends of the multiple sets of fiber anchors (2) pass through the first sandblasting layer (3), the bonding underlayer (4), the second sandblasting layer (5) and extend into the interior of the transition layer (6). The surfaces of the multiple sets of fiber anchors (2) are fixedly bonded to the interior of the first sandblasting layer (3), the bonding underlayer (4), the second sandblasting layer (5), and the transition layer (6).

3. The anti-shedding wear-resistant coating boiler pipe structure according to claim 1, characterized in that: The bonding substrate (4) is made of nickel-based alloy material and has a thickness of 50-100μm.

4. The anti-shedding wear-resistant coating boiler pipe structure according to claim 1, characterized in that: The transition layer (6) is made of metal-ceramic composite material and has a thickness of 100-200 μm.

5. The anti-shedding wear-resistant coating boiler pipe structure according to claim 1, characterized in that: The wear-resistant surface layer (7) is made of high-hardness ceramic material and has a thickness of 200-500μm.

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