Highly abrasion resistant industrial conveying bright pipe
By employing a combination design of a 304 stainless steel outer bright layer and a chromium carbide inner wear-resistant layer in industrial conveying bright pipes, combined with cold rolling and plasma thermal spraying processes, the problem of pipe inner wall wear has been solved, achieving high wear resistance and removable maintenance, reducing production costs and extending service life.
Patent Information
- Application Number
- CN202522604439.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-09
AI Technical Summary
When transporting abrasive materials, the inner wall of existing bright industrial conveying pipes is easily worn. Traditional coatings have low bonding strength, resulting in short service life and high production costs.
It adopts a bright outer layer of 304 stainless steel and an inner wear-resistant layer of chromium carbide composite wear-resistant material. Combined with cold rolling and plasma thermal spraying processes, the inner wear-resistant layer has high bonding strength with the base layer. The design of plug-in plate and wear-resistant bump makes it easy to replace wear-resistant parts.
It significantly improves the wear resistance of the pipe inner wall, reduces production costs, extends the service life of the pipe, and allows for quick replacement of worn parts without the need to replace the entire pipe.
Smart Images
Figure CN224932417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conveying pipes, specifically to a high wear-resistant industrial conveying bright pipe. Background Technology
[0002] Industrial bright conveyor pipes are widely used in mining, metallurgy, building materials, and chemical industries for transporting highly abrasive materials such as ores, coal, cement, and pulverized coal. Existing industrial bright conveyor pipes are mostly made of ordinary stainless steel or seamless steel pipes. While they possess a certain degree of smoothness and corrosion resistance, the inner wall of the pipe is easily worn by the impact and friction of abrasive materials during transport, leading to a shortened service life and frequent replacements. This not only increases production costs but also affects production continuity. To improve the wear resistance of the conveyor pipes, some manufacturers spray wear-resistant coatings onto the inner wall. However, traditional coatings have low bonding strength with the pipe substrate, and under long-term material impact, the coating is prone to peeling off, making the wear resistance effect unsustainable. Therefore, those skilled in the art have developed a high-wear-resistant industrial bright conveyor pipe to solve the problems mentioned in the background section. Utility Model Content
[0003] To solve the above technical problems, this utility model provides a high wear-resistant industrial conveying bright tube, including a tube body. The tube body is a hollow cylindrical structure and is composed of an outer bright layer, a base layer and an inner wear-resistant layer. The outer bright layer is coated on the outer surface of the base layer by a cold rolling process, and the inner wear-resistant layer is sprayed on the inner surface of the base layer by a plasma thermal spraying process.
[0004] The inner wall of the tube has several insertion slots that extend through both ends of the tube. Threaded grooves are symmetrically opened on the inner wall of the insertion slots. Insertion plates are slidably connected inside the insertion slots. Fastening screws are symmetrically arranged inside the insertion plates. Several wear-resistant protrusions are installed at equal intervals on the inner wall of the insertion plates.
[0005] Preferably, the outer bright layer is made of 304 stainless steel, and the surface finish of the outer bright layer is Ra=0.6μm after polishing.
[0006] Preferably, the substrate layer is made of Q345B seamless steel pipe.
[0007] Preferably, the inner wear-resistant layer is made of chromium carbide composite wear-resistant material.
[0008] Preferably, connecting flanges are symmetrically installed on the outer surface of the pipe, and several mounting holes are opened inside the connecting flanges.
[0009] Preferably, the cross-section of the insertion slot is T-shaped, and the cross-section of the insertion plate is T-shaped.
[0010] Preferably, both the connector plate and the wear-resistant bump are made of chromium carbide composite wear-resistant material.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] This utility model uses chromium carbide composite wear-resistant material for the inner wear-resistant layer and forms it through plasma thermal spraying. By controlling the spraying parameters, the bonding strength reaches 55MPa, avoiding the drawbacks of traditional coating peeling and significantly improving the wear resistance of the inner wall of the pipe. At the same time, it is equipped with a sliding and detachable T-shaped plug plate and wear-resistant protrusions, which can be quickly disassembled and replaced after wear, without the need to replace the entire pipe, reducing production costs and extending the overall service life of the pipe. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this application;
[0014] Figure 2 This is a schematic diagram of the structure of the tube body in this application;
[0015] Figure 3 This is a schematic diagram of the plug-in board of this application;
[0016] In the diagram: 1. Outer glossy layer; 2. Connecting flange; 3. Mounting hole; 4. Base layer; 5. Inner wear-resistant layer; 6. Insert groove; 7. Threaded groove; 8. Insert plate; 9. Fastening screw; 10. Wear-resistant protrusion. Detailed Implementation
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.
[0018] like Figures 1-3As shown, this embodiment provides a high wear-resistant industrial conveying bright tube, including a tube body. The tube body is a hollow cylindrical structure, composed of an outer bright layer 1, a base layer 4, and an inner wear-resistant layer 5. The outer bright layer 1 is made of 304 stainless steel and is coated onto the outer surface of the base layer 4 by a cold rolling process. The outer surface of the outer bright layer 1 is polished to a surface finish of Ra=0.6μm. The base layer 4 is made of Q345B seamless steel pipe to ensure good structural strength of the tube body. The inner wear-resistant layer 5 is made of chromium carbide composite wear-resistant material and is sprayed onto the inner surface of the base layer 4 by a plasma thermal spraying process. During the spraying process, the spraying temperature is controlled at 1000°C. At -1200℃ and a spraying pressure of 0.8-1.0MPa, the bonding strength between the inner wear-resistant layer 5 and the base layer 4 reaches 55MPa. Connecting flanges 2 are symmetrically installed on the outer surface of the pipe. Several mounting holes 3 are opened inside the connecting flanges 2. Several insertion grooves 6 are opened on the inner wall of the pipe, and the insertion grooves 6 penetrate through both ends of the pipe. The cross-section of the insertion grooves 6 is T-shaped. Threaded grooves 7 are symmetrically opened on the inner wall of the insertion grooves 6. Insertion plates 8 are slidably connected inside the insertion grooves 6, and the cross-section of the insertion plates 8 is T-shaped. Fastening screws 9 are symmetrically arranged inside the insertion plates 8. Several wear-resistant protrusions 10 are installed at equal intervals on the inner wall of the insertion plates 8. Both the insertion plates 8 and the wear-resistant protrusions 10 are made of chromium carbide composite wear-resistant material.
[0019] The working principle of this utility model is as follows: the wear resistance is improved by the inner wear-resistant layer 5 and the wear-resistant protrusion 10. When the wear-resistant protrusion 10 is worn, the fastening screw 9 is unscrewed out of the threaded groove 7, the plug plate 8 is pulled out from the plug groove 6, the worn wear-resistant protrusion 10 is removed, and then a new wear-resistant protrusion 10 is replaced. This is convenient, quick and easy and extends the service life of the pipe.
[0020] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A high wear-resistant industrial conveying bright tube, comprising a tube body, characterized in that, The tube body is a hollow cylindrical structure. The tube body is composed of an outer bright layer (1), a base layer (4) and an inner wear-resistant layer (5). The outer bright layer (1) is coated on the outer surface of the base layer (4) by cold rolling process, and the inner wear-resistant layer (5) is sprayed on the inner surface of the base layer (4) by plasma thermal spraying process. The inner wall of the pipe is provided with several insertion slots (6), and the insertion slots (6) penetrate through both ends of the pipe. The inner wall of the insertion slots (6) is symmetrically provided with threaded grooves (7). The insertion slots (6) are slidably connected to the insertion plate (8). The insertion plate (8) is symmetrically provided with fastening screws (9). The inner wall of the insertion plate (8) is equidistantly provided with several wear-resistant protrusions (10).
2. The high wear-resistant industrial conveying bright tube according to claim 1, characterized in that, The outer bright layer (1) is made of 304 stainless steel, and the surface finish of the outer bright layer (1) is Ra=0.6μm after polishing.
3. The high wear-resistant industrial conveying bright tube according to claim 1, characterized in that, The substrate layer (4) is made of Q345B seamless steel pipe.
4. The high wear-resistant industrial conveying bright tube according to claim 1, characterized in that, The inner wear-resistant layer (5) is made of chromium carbide composite wear-resistant material.
5. The high wear-resistant industrial conveying bright tube according to claim 1, characterized in that, The connecting flanges (2) are symmetrically installed on the outer surface of the tube, and several mounting holes (3) are opened inside the connecting flanges (2).
6. The high wear-resistant industrial conveying bright tube according to claim 1, characterized in that, The cross-section of the insertion slot (6) is T-shaped, and the cross-section of the insertion plate (8) is T-shaped.
7. A high wear-resistant industrial conveying bright tube according to claim 1, characterized in that, Both the plug plate (8) and the wear-resistant bump (10) are made of chromium carbide composite wear-resistant material.