A stainless steel seamless pipe having good hardness wear resistance

Abstract

The utility model discloses a good hardness wear resistance stainless steel seamless tube has, including stainless steel base pipe, pressure -resisting layer, hard layer, wear -resistant layer and strengthening mechanism, the outside of stainless steel base pipe is provided with honeycomb hole structure, the outside of stainless steel base pipe is fixed with a pressure -resisting layer, pressure -resisting layer adopts glass fiber reinforced resin to make, the outside of pressure -resisting layer is fixed with a hard layer, the outside of hard layer is fixed with a wear -resistant layer, and wear -resistant layer is alumina coating, and the strengthening mechanism includes: reinforcing ring and connecting rib, and the number of reinforcing ring is multiple and is fixed in stainless steel base pipe, and multiple reinforcing rings are fixedly connected through multiple connecting rib between multiple reinforcing rings. The utility model discloses through high carbon high chromium alloy hard layer promotes the outside hardness, and alumina coating enhances wear resistance, and honeycomb hole structure and glass fiber reinforced resin pressure -resisting layer improve the compressive strength, and stainless steel reinforcing ring and connecting rib enhance the overall support, so that the overall hardness, wear resistance and strength are higher.

Description

Technical Field

[0001] This utility model relates to the field of seamless tube technology, and in particular to a stainless steel seamless tube with good hardness and wear resistance. Background Technology

[0002] Seamless steel pipes are a type of tubular steel material manufactured through processes such as piercing, hot rolling, or cold drawing. Due to their integrally formed structure, they possess high strength, high toughness, and excellent pressure resistance, effectively withstanding the pressure of liquid and gas transport as well as mechanical stress under complex working conditions. They are widely used in petroleum, chemical, power, machinery manufacturing, aerospace, and other fields.

[0003] Existing seamless steel pipes are mostly of a single structure, making it difficult to balance hardness and wear resistance. They also have limited compressive strength and overall strength, and are prone to problems such as local instability, rapid wear, and insufficient strength. Therefore, in response to the above situation, there is an urgent need to develop a stainless steel seamless pipe with better hardness and wear resistance. This pipe is made by using a high-carbon, high-chromium alloy hardening layer to increase the hardness of the outer side, an alumina coating to enhance wear resistance, a honeycomb structure and a glass fiber reinforced resin pressure-resistant layer to improve compressive strength, and stainless steel reinforcing rings and connecting ribs to enhance overall support. This would overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide a seamless stainless steel tube with good hardness and wear resistance to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A seamless stainless steel tube with good hardness and wear resistance includes a stainless steel base tube, a pressure-resistant layer, a hardening layer, a wear-resistant layer, and a reinforcing mechanism. The outer side of the stainless steel base tube has a honeycomb structure. A pressure-resistant layer made of glass fiber reinforced resin is fixed to the outer side of the stainless steel base tube. A hardening layer is fixed to the outer side of the pressure-resistant layer. A wear-resistant layer made of alumina coating is fixed to the outer side of the hardening layer. The reinforcing mechanism includes reinforcing rings and connecting ribs. There are multiple reinforcing rings fixed inside the stainless steel base tube, and the multiple reinforcing rings are fixedly connected by multiple connecting ribs.

[0007] Preferably, both the reinforcing ring and the connecting rib are made of stainless steel.

[0008] Preferably, the stainless steel base tube has a wall thickness of 8 mm.

[0009] Preferably, the hardening layer is made of a high-carbon, high-chromium alloy.

[0010] The beneficial effects of this utility model are as follows: This seamless stainless steel tube with good hardness and wear resistance is enhanced by using a high-carbon, high-chromium alloy for the hardening layer, which increases the hardness of the outer side of the stainless steel tube. The wear-resistant layer is an alumina coating, which provides excellent wear resistance and improves the wear resistance of the outer side of the stainless steel tube. The honeycomb structure can absorb pressure energy through wall bending, resulting in more uniform deformation under pressure and reducing the likelihood of local instability, thus improving the compressive strength of the stainless steel tube. The pressure-resistant layer is made of glass fiber reinforced resin, which shares the radial tensile stress of the tube body, thereby improving the overall compressive strength. The reinforcing ring and connecting ribs strengthen the support of the stainless steel tube from the inside, thereby improving the strength of the stainless steel tube. In summary, this utility model improves the hardness of the outer side through a high-carbon, high-chromium alloy hardening layer, enhances wear resistance through an alumina coating, improves compressive strength through a honeycomb structure and a glass fiber reinforced resin pressure-resistant layer, and enhances overall support through stainless steel reinforcing rings and connecting ribs, resulting in higher overall hardness, wear resistance, and strength. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 2 This is an internal sectional view of the present invention.

[0013] Figure 3 This is a perspective view of the stainless steel base tube in this utility model.

[0014] Figure 4 This utility model Figure 3 Internal sectional view.

[0015] Figure 5 This is a partial structural schematic diagram of the present invention.

[0016] Legend:

[0017] 1. Stainless steel base tube; 101. Honeycomb structure; 2. Pressure resistant layer; 3. Hardened layer; 4. Wear resistant layer; 5. Reinforcing mechanism; 501. Reinforcing ring; 502. Connecting ribs. Detailed Implementation

[0018] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Specific implementation examples are given below.

[0020] See Figures 1-5 In this embodiment of the invention, a seamless stainless steel tube with good hardness and wear resistance includes a stainless steel base tube 1, a pressure-resistant layer 2, a hardening layer 3, a wear-resistant layer 4, and a reinforcing mechanism 5. The outer side of the stainless steel base tube 1 is provided with a honeycomb structure 101. The honeycomb structure 101 can absorb pressure energy through wall bending, resulting in more uniform deformation under pressure and reducing the likelihood of local instability, thus improving the compressive strength of the stainless steel base tube 1. A pressure-resistant layer 2 is fixed to the outer side of the stainless steel base tube 1. The pressure-resistant layer 2 is made of glass fiber reinforced resin. The glass fiber reinforced resin shares the radial tensile stress of the tube body, thereby improving the overall compressive strength. A hardening layer is fixed to the outer side of the pressure-resistant layer 2. Layer 3, the hardening layer 3 is made of high carbon high chromium alloy, giving it high hardness. A wear-resistant layer 4 is fixed on the outside of the hardening layer 3. The wear-resistant layer 4 is an alumina coating, giving it good wear resistance. The reinforcing mechanism 5 includes: reinforcing rings 501 and connecting ribs 502. Both the reinforcing rings 501 and the connecting ribs 502 are made of stainless steel. There are multiple reinforcing rings 501 and they are fixed inside the stainless steel base tube 1. The multiple reinforcing rings 501 are fixedly connected to each other by multiple connecting ribs 502. The reinforcing rings 501 and connecting ribs 502 strengthen the support of the stainless steel base tube 1 from the inside, thereby improving the strength of the stainless steel base tube 1.

[0021] The stainless steel base tube 1 has a wall thickness of 8 mm.

[0022] Working principle: This stainless steel seamless tube with good hardness and wear resistance has a hardening layer 3 made of high-carbon high-chromium alloy, which improves the hardness of the outer side of the stainless steel base tube 1. The wear-resistant layer 4 is an aluminum oxide coating, which gives it good wear resistance and improves the wear resistance of the outer side of the stainless steel base tube 1. The honeycomb structure 101 can absorb pressure energy through wall bending, and the deformation is more uniform under pressure, making it less prone to local instability and improving the compressive strength of the stainless steel base tube 1. The pressure-resistant layer 2 is made of glass fiber reinforced resin. The glass fiber reinforced resin shares the radial tensile stress of the tube body, which improves the overall compressive strength. The reinforcing ring 501 and connecting ribs 502 strengthen the support of the stainless steel base tube 1 from the inside, thereby improving the strength of the stainless steel base tube 1.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A seamless stainless steel tube with good hardness and wear resistance, characterized in that, The system includes a stainless steel base tube (1), a pressure-resistant layer (2), a hardening layer (3), a wear-resistant layer (4), and a reinforcing mechanism (5). The outer side of the stainless steel base tube (1) is provided with a honeycomb hole structure (101). A pressure-resistant layer (2) is fixed on the outer side of the stainless steel base tube (1). The pressure-resistant layer (2) is made of glass fiber reinforced resin. A hardening layer (3) is fixed on the outer side of the pressure-resistant layer (2). A wear-resistant layer (4) is fixed on the outer side of the hardening layer (3). The wear-resistant layer (4) is an alumina coating. The reinforcing mechanism (5) includes a reinforcing ring (501) and a connecting rib (502). There are multiple reinforcing rings (501) and they are fixed inside the stainless steel base tube (1). The multiple reinforcing rings (501) are fixedly connected by multiple connecting ribs (502).

2. The seamless stainless steel tube with good hardness and wear resistance according to claim 1, characterized in that, Both the reinforcing ring (501) and the connecting rib (502) are made of stainless steel.

3. The seamless stainless steel tube with good hardness and wear resistance according to claim 1, characterized in that, The stainless steel base tube (1) has a wall thickness of 8 mm.

4. The seamless stainless steel tube with good hardness and wear resistance according to claim 1, characterized in that, The hardening layer (3) is made of a high-carbon, high-chromium alloy.

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