A seamless steel pipe for ultra-low temperature alloy structures with rust-resistant properties

Abstract

This utility model relates to a seamless steel pipe for ultra-low temperature alloy structures with rust-proof function, comprising a steel base pipe, an outer wall of which is provided with a corrosion-resistant layer, an outer layer of which is provided with a water-proof layer, and an outer layer of which is provided with a wear-resistant layer. This seamless steel pipe for ultra-low temperature alloy structures with rust-proof function comprises, from the inside out, a steel base pipe, a galvanized metal layer, a fiber reinforcement layer, a water-proof layer, and a wear-resistant layer. The galvanized metal layer is hot-dip galvanized and directly adheres to the surface of the steel base pipe, filling the microscopic defects of the matrix and making the pores smaller. The fiber reinforcement layer is a glass fiber braided layer, with the glass fiber braided layer interlaced at 45° and bonded to the galvanized metal layer with epoxy resin. The mesh skeleton is a nylon mesh, and the water-proof adhesive layer is a butyl rubber / polyurethane composite adhesive. The nylon mesh is embedded in the middle of the water-proof adhesive layer, which can enhance the shear deformation resistance of the water-proof layer.

Description

Technical Field

[0001] This utility model relates to the field of seamless steel pipe technology, specifically to a seamless steel pipe for ultra-low temperature alloy structures with rust prevention function. Background Technology

[0002] Seamless steel pipes are steel pipes made from a single piece of metal without any seams on their surface. According to the production method, seamless pipes are divided into hot-rolled pipes, cold-rolled pipes, cold-drawn pipes, extruded pipes, and jacking pipes. According to the cross-sectional shape, seamless steel pipes are divided into round and irregular shapes. The materials of low-temperature alloy steel pipes are generally low-alloy steel, stainless steel, etc. The main advantages of structural seamless steel pipes are high strength, good corrosion resistance, wear resistance, strong tensile strength, good heat resistance, and high compressive strength.

[0003] According to a utility model patent with Chinese patent application number 201921142723.X, a rust-proof composite steel pipe is used. During use, a protective plate is installed. Maintenance personnel can pull on the protrusions on the protective plate to separate a damaged plate from the surface of the steel pipe and replace it with a new one. However, this rust-proof composite steel pipe cannot implement rust prevention measures on the steel pipe itself, and the cost of rust prevention is too high, and the rust prevention process is relatively slow. Therefore, it is necessary to propose a seamless steel pipe with rust prevention function for ultra-low temperature alloy structures to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a seamless steel pipe for ultra-low temperature alloy structures with rust prevention function. It has the advantages of being able to implement rust prevention measures on the steel pipe body from the root, and solves the problems of not being able to implement rust prevention measures on the steel pipe itself, high cost of rust prevention and protection, and slow implementation process.

[0005] To achieve the aforementioned goal of fundamentally preventing rust on the steel pipe body, this utility model provides the following technical solution: a seamless steel pipe for ultra-low temperature alloy structures with rust prevention function, comprising a steel base pipe, the outer wall of the steel base pipe being provided with a corrosion-resistant layer, the outer layer of the corrosion-resistant layer being provided with a water-proof layer, the outer layer of the water-proof layer being provided with a wear-resistant layer, the corrosion-resistant layer including a galvanized metal layer, the outer wall of the steel base pipe being attached with the galvanized metal layer, a fiber reinforcement layer being provided on one side of the galvanized metal layer, the water-proof layer including a mesh skeleton, the outer layer of the fiber reinforcement layer being provided with a mesh skeleton, and the outer wall of the mesh skeleton being provided with a water-blocking adhesive layer.

[0006] Furthermore, the steel base pipe is a cryogenic alloy, the steel base pipe is of model 06Ni9DR, and the thickness of the steel base pipe is 8-12mm.

[0007] Furthermore, the zinc plating layer is hot-dip galvanized, and the thickness of the zinc plating layer is 80-120 μm.

[0008] Furthermore, the fiber reinforcement layer is made of woven glass fiber, and the thickness of the fiber reinforcement layer is 0.8-1.2 mm.

[0009] Furthermore, the mesh skeleton is a nylon mesh with a weaving density of 80 meshes and a thickness of 0.3-0.5 mm.

[0010] Furthermore, the water-blocking adhesive layer is a butyl rubber / polyurethane composite adhesive, and the thickness of the water-blocking adhesive layer is 1.5-2.5mm.

[0011] Furthermore, the wear-resistant layer is made of glass fiber and polyvinyl chloride, and the thickness of the wear-resistant layer is 2-3 mm.

[0012] Furthermore, the wear-resistant layer is produced by an extrusion coating process, and the wear-resistant layer is hot-melt bonded to the outer wall of the water-blocking adhesive layer. The inner wall of the fiber-reinforced layer is connected to the metal galvanized layer through epoxy resin.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This seamless steel pipe for ultra-low temperature alloy structures with rust prevention features consists of, from the inside out, a steel base pipe, a galvanized metal layer, a fiber reinforcement layer, a water-resistant layer, and a wear-resistant layer. The galvanized metal layer is hot-dip galvanized and directly adheres to the surface of the steel base pipe, filling in the microstructure defects and reducing pore size. The fiber reinforcement layer is a glass fiber braided layer, with the fiber fibers interlaced at 45° and bonded to the galvanized metal layer with epoxy resin. The mesh skeleton is a nylon mesh, and the water-resistant adhesive layer is a butyl rubber / polyurethane composite adhesive. The nylon mesh is embedded in the middle of the water-resistant adhesive layer, enhancing the water-resistant layer's resistance to shear deformation. The wear-resistant layer, made of glass fiber and polyvinyl chloride, further improves the overall wear resistance of the steel pipe.

[0015] This seamless steel pipe for ultra-low temperature alloy structures with rust prevention function typically has a corrosion-resistant layer, a water-proof layer, and a wear-resistant layer on the outer wall of the steel base pipe. Among them, the galvanized metal layer directly isolates water and oxygen from contact, and the water-blocking adhesive layer can block external water vapor. The multi-layer structure achieves long-term rust prevention, solving the problems that rust prevention measures cannot be implemented on the steel pipe itself, the cost of rust prevention is too high, and the rust prevention implementation process is relatively slow. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the seamless steel pipe structure of this utility model;

[0017] Figure 2 This is a top view of the seamless steel pipe structure of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0019] In the diagram: 1. Steel base pipe; 2. Corrosion-resistant layer; 201. Galvanized metal layer; 202. Fiber reinforcement layer; 3. Waterproof layer; 301. Mesh skeleton; 302. Water-blocking adhesive layer; 4. Wear-resistant layer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This embodiment of a seamless steel pipe for ultra-low temperature alloy structures with rust prevention function includes a steel base pipe 1. The outer wall of the steel base pipe 1 is provided with a corrosion-resistant layer 2. The outer layer of the corrosion-resistant layer 2 is provided with a water-proof layer 3. The outer layer of the water-proof layer 3 is provided with a wear-resistant layer 4. The corrosion-resistant layer 2 includes a galvanized metal layer 201. The outer wall of the steel base pipe 1 is attached with the galvanized metal layer 201. A fiber reinforcement layer 202 is provided on one side of the galvanized metal layer 201. The water-proof layer 3 includes a mesh skeleton 301. The outer layer of the fiber reinforcement layer 202 is provided with the mesh skeleton 301. The outer wall of the mesh skeleton 301 is provided with a water-blocking adhesive layer 302.

[0022] In the implementation of this case, the following layers are arranged sequentially from the inside out: a steel base pipe 1, a galvanized metal layer 201, a fiber reinforcement layer 202, a water-resistant layer 3, and a wear-resistant layer 4. The galvanized metal layer 201 is hot-dip galvanized and is directly attached to the surface of the steel base pipe 1, filling the microscopic defects of the substrate and making the pores smaller. The fiber reinforcement layer 202 is a glass fiber braided layer, which is cross-wound at 45° and bonded to the galvanized metal layer 201 with epoxy resin. The mesh skeleton 301 is a nylon mesh, and the water-resistant adhesive layer 302 is a butyl rubber / polyurethane composite adhesive. The nylon mesh is embedded in the middle of the water-resistant adhesive layer 302, which can enhance the shear deformation resistance of the water-resistant layer 3. By setting the wear-resistant layer 4, which is made of glass fiber and polyvinyl chloride, the wear resistance of the overall steel pipe can be further improved.

[0023] In the case implementation, the outer wall of the steel base pipe 1 is usually provided with a corrosion-resistant layer 2, a water-proof layer 3 and a wear-resistant layer 4. Among them, the galvanized metal layer 201 directly isolates water and oxygen from contact, and the water-blocking adhesive layer 302 can block external water vapor. The multi-layer structure is stacked to achieve long-term rust prevention.

[0024] In summary, this seamless steel pipe for ultra-low temperature alloy structures with rust prevention function is provided with, from the inside out, a steel base pipe 1, a galvanized metal layer 201, a fiber reinforcement layer 202, a water-proof layer 3, and a wear-resistant layer 4. The galvanized metal layer 201 is hot-dip galvanized and is directly attached to the surface of the steel base pipe 1, filling the microscopic defects of the substrate and making the pores smaller. The fiber reinforcement layer 202 is a glass fiber braided layer, which is cross-wound at 45-45° and bonded to the galvanized metal layer 201 with epoxy resin. The mesh skeleton 301 is a nylon mesh, and the water-proof adhesive layer 302 is a butyl rubber / polyurethane composite adhesive. The nylon mesh is embedded in the middle of the water-proof adhesive layer 302, which can enhance the shear deformation resistance of the water-proof layer 3. By setting the wear-resistant layer 4, which is made of glass fiber and polyvinyl chloride, the wear resistance of the overall steel pipe can be further improved.

[0025] Furthermore, the outer wall of the steel base pipe 1 is usually provided with a corrosion-resistant layer 2, a water-proof layer 3, and a wear-resistant layer 4. Among them, the galvanized metal layer 201 directly isolates water and oxygen from contact, and the water-blocking adhesive layer 302 can block external water vapor. The multi-layer structure achieves long-term rust prevention, which solves the problems that rust prevention measures cannot be implemented on the steel pipe itself, the cost of rust prevention is too high, and the rust prevention implementation process is relatively slow.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seamless steel pipe for ultra-low temperature alloy structures with rust-proof function, comprising a steel base pipe (1), characterized in that: The outer wall of the steel base pipe (1) is provided with a corrosion-resistant layer (2), the outer layer of the corrosion-resistant layer (2) is provided with a water-proof layer (3), the outer layer of the water-proof layer (3) is provided with a wear-resistant layer (4), the corrosion-resistant layer (2) includes a galvanized metal layer (201), the outer wall of the steel base pipe (1) is attached with a galvanized metal layer (201), a fiber-reinforced layer (202) is provided on one side of the galvanized metal layer (201), the water-proof layer (3) includes a mesh skeleton (301), the outer layer of the fiber-reinforced layer (202) is provided with a mesh skeleton (301), and the outer wall of the mesh skeleton (301) is provided with a water-blocking adhesive layer (302).

2. The seamless steel pipe for ultra-low temperature alloy structures with rust-proof function according to claim 1, characterized in that: The steel base pipe (1) is a cryogenic alloy, the model of the steel base pipe (1) is 06Ni9DR, and the thickness of the steel base pipe (1) is 8-12mm.

3. The seamless steel pipe for ultra-low temperature alloy structures with rust-proof function according to claim 1, characterized in that: The zinc plating layer (201) is hot-dip galvanized, and the thickness of the zinc plating layer (201) is 80-120μm.

4. A seamless steel pipe for ultra-low temperature alloy structures with rust-proof function according to claim 1, characterized in that: The fiber reinforcement layer (202) is made of woven glass fiber, and the thickness of the fiber reinforcement layer (202) is 0.8-1.2 mm.

5. A seamless steel pipe for ultra-low temperature alloy structures with rust-proof function according to claim 1, characterized in that: The mesh skeleton (301) is a nylon mesh with a weaving density of 80 meshes and a thickness of 0.3-0.5 mm.

6. A seamless steel pipe for ultra-low temperature alloy structures with rust-proof function according to claim 1, characterized in that: The water-blocking adhesive layer (302) is a butyl rubber / polyurethane composite adhesive, and the thickness of the water-blocking adhesive layer (302) is 1.5-2.5mm.

7. A seamless steel pipe for ultra-low temperature alloy structures with rust-proof function according to claim 1, characterized in that: The wear-resistant layer (4) is made of glass fiber and polyvinyl chloride, and the thickness of the wear-resistant layer (4) is 2-3 mm.

8. A seamless steel pipe for ultra-low temperature alloy structures with rust-proof function according to claim 1, characterized in that: The wear-resistant layer (4) is produced by an extrusion coating process. The wear-resistant layer (4) is hot-melted onto the outer wall of the water-blocking adhesive layer (302). The inner wall of the fiber-reinforced layer (202) is connected to the zinc-plated metal layer (201) by epoxy resin.

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