A fully protected high performance cold drawn bearing steel tube

Abstract

The utility model belongs to bearing steel pipe technical field, and disclose a kind of high-performance cold-drawn bearing steel pipe of full protection, including pipe material, the both ends of pipe material are provided with side seal protection component, pipe material is divided into matrix, outer protective structure and inner protective structure, the outer ring surface of matrix is provided with outer protective structure, the inner wall surface of matrix is provided with inner protective structure, side seal protection component includes side seal protection piece and the matching structure on pipe material, side seal protection piece is provided with installation cooperation head on the side away from pipe material, outer protective structure includes outer anti-oxidation coating, outer combined barrier layer and outer anticorrosive layer, outer protective structure includes inner anti-oxidation coating, inner combined barrier layer and inner anticorrosive layer, the utility model structure design compact and reasonable, bearing steel pipe can be comprehensively protected, can prevent foreign body scratch pipeline inner wall, can improve bearing production quality, can prevent the oxidation, corrosion of bearing steel pipe stored, can greatly improve bearing steel pipe storage time.

Description

Technical Field

[0001] This utility model relates to the field of bearing steel pipe technology, specifically a fully protected high-performance cold-drawn bearing steel pipe. Background Technology

[0002] In the field of modern machinery manufacturing, bearings are key components, and their performance directly affects the operating accuracy, stability, and service life of mechanical equipment. Bearing steel tubes, as the core raw material for bearing production, require crucial quality control. However, there are currently many technical challenges to be addressed in the transportation, transfer, and storage of bearing steel tubes.

[0003] During transportation and relocation, bearing steel pipes are typically transported using open or semi-open methods, making it easy for foreign objects to enter through the openings at both ends. For example, during long-distance freight transport, granular foreign objects such as sand, gravel, and metal shavings may enter the steel pipe due to bumps and vibrations, or accidentally detached tool parts during hoisting and loading / unloading operations. As the vehicle bumps and vibrates during transportation, these foreign objects continuously rub and scrape against the inner wall of the steel pipe, causing scratches and damage that is difficult to detect. Since the smoothness and integrity of the inner wall of the bearing steel pipe directly affect the precision and reliability of the finished bearing, using steel pipes with damaged inner walls in bearing production can lead to anything from abnormal noise and vibration during operation, reducing operational stability, to premature wear and failure, significantly shortening the bearing's lifespan, and ultimately affecting the normal operation of the entire machinery, resulting in substantial economic losses.

[0004] The storage of bearing steel pipes also presents significant challenges. As a metallic material, steel is highly susceptible to oxidation by reacting with oxygen and moisture in the air, forming rust. Furthermore, it is prone to corrosion in complex environments such as humidity and acid / alkali conditions. Current storage methods mostly rely on simple environmental control or applying a small amount of protective grease to the surface, which is insufficient to effectively prevent long-term oxidation and corrosion. With prolonged storage, the surface of the steel pipe gradually rusts, the internal structural strength decreases, and the material properties deteriorate. Frequent purchases of new raw materials not only increase costs for enterprises but also, in the event of material shortages, severely impact bearing production, affecting the company's product reputation and market competitiveness. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a fully protected high-performance cold-drawn bearing steel tube, which solves the problems mentioned in the background art, such as the impact of inner wall damage on bearing quality and the difficulty in storing bearing steel tubes.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a fully protected high-performance cold-drawn bearing steel pipe, comprising a pipe, with side-sealing protective components provided at both ends of the pipe, the pipe being divided into a base body, an outer protective structure, and an inner protective structure, the outer ring surface of the base body being provided with an outer protective structure, and the inner wall surface of the base body being provided with an inner protective structure.

[0009] Preferably, the side sealing protection component includes a side sealing protection element and a mating structure on the pipe. A clamp is provided at the end of the pipe, and multiple sets of through grooves are provided on the clamp. A fixing groove is provided on one side of the clamp. A mating circular groove is provided in the center of the pipe, and an internal thread is provided at the bottom of the pipe.

[0010] Preferably, the side sealing protective component is provided with an installation mating head on the side away from the pipe, the side sealing protective component is provided with multiple sets of clips corresponding to the through groove, the side sealing protective component is provided with a fixed core column at the center, and the end of the fixed core column is provided with an external thread corresponding to the internal thread, and the internal thread and the external thread are threadedly connected.

[0011] Preferably, the outer protective structure includes an outer anti-oxidation coating, an outer bonding layer, and an outer anti-corrosion layer. The outer wall of the substrate is coated with an outer anti-oxidation coating, an outer bonding layer is coated on the outside of the outer anti-oxidation coating, and an outer anti-corrosion layer is coated on the outside of the outer bonding layer.

[0012] Preferably, the inner protective structure includes an inner anti-oxidation coating, an inner bonding layer, and an inner anti-corrosion layer. The inner wall of the substrate is coated with an inner anti-oxidation coating, the outer side of the inner anti-oxidation coating is coated with an inner bonding layer, and the outer side of the inner bonding layer is coated with an inner anti-corrosion layer.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a fully protected high-performance cold-drawn bearing steel tube, which has the following beneficial effects:

[0015] 1. This fully protected high-performance cold-drawn bearing steel pipe is equipped with side sealing protection components, an outer protection structure, and an inner protection structure, which can provide comprehensive protection for the bearing steel pipe, prevent foreign objects from scratching the inner wall of the pipe, improve the quality of bearing production, prevent oxidation and corrosion of the stored bearing steel pipe, and significantly extend the storage time of the bearing steel pipe.

[0016] 2. Equipped with a detachable side sealing protection component, which can seal the openings on both sides of the bearing steel pipe, prevent foreign objects from entering the pipe, protect the inside of the pipe from being scratched by sharp objects, and avoid using substandard materials in production.

[0017] 3. It is equipped with an outer protective structure and an inner protective structure. By coating with anti-oxidation and anti-corrosion materials, it can protect the bearing steel pipe from oxidation and corrosion, which can significantly increase the storage time of the bearing steel pipe. It is also equipped with a bonding layer to separate the anti-oxidation material and the anti-corrosion material, which can prevent them from penetrating and reacting with each other and prevent the outermost anti-corrosion material from falling off, which can significantly improve the storage time of the bearing steel pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the side sealing protection component of this utility model.

[0020] Figure 3 This is a schematic diagram of the side sealing protective component of this utility model.

[0021] Figure 4 This is a cross-sectional view of the pipe structure of this utility model.

[0022] In the diagram: 1. Pipe; 2. Side sealing protection component; 3. Substrate; 4. Outer protection structure; 5. Inner protection structure; 6. Side sealing protection component; 7. Clip; 8. Through groove; 9. Fixing groove; 10. Butt joint groove; 11. Internal thread; 12. Mounting head; 13. Clamp; 14. Fixing core; 15. External thread; 16. Outer anti-oxidation coating; 17. Outer bonding layer; 18. Outer anti-corrosion layer; 19. Inner anti-oxidation coating; 20. Inner bonding layer; 21. Inner anti-corrosion layer. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 This utility model provides a technical solution:

[0025] A fully protected high-performance cold-drawn bearing steel tube includes a tube 1, with side-sealing protective components 2 at both ends. The tube 1 is divided into a base body 3, an outer protective structure 4, and an inner protective structure 5. The outer protective structure 4 is provided on the outer ring surface of the base body 3, and the inner protective structure 5 is provided on the inner wall surface of the base body 3. The base body 3 is a G-type seamless steel tube that meets the requirements of bearings.

[0026] Furthermore, the side sealing protection assembly 2 includes a side sealing protection component 6 and a mating structure on the pipe 1. A clamp 7 is provided at the end of the pipe 1, and the clamp 7 has multiple sets of through grooves 8. A fixing groove 9 is provided on one side of the clamp 7. A mating circular groove 10 is provided at the center of the pipe 1, and an internal thread 11 is provided at the bottom inside the pipe 1. The clamp 7, through grooves 8, fixing groove 9, mating circular groove 10, and internal thread 11 constitute the mating structure on the pipe 1.

[0027] Furthermore, the side sealing protection component 6 is provided with an installation mating head 12 on the side opposite to the pipe 1. Multiple sets of clips 13 corresponding to the through groove 8 are provided inside the side sealing protection component 6. A fixing core post 14 is provided at the center of the side sealing protection component 6, and an external thread 15 corresponding to the internal thread 11 is provided at the end of the fixing core post 14. The internal thread 11 and the external thread 15 are threadedly connected. During connection, first align the clips 13 with the through groove 8, and align the fixing core post 14 with the mating circular groove 10, so that all sets of clips 13 slide through the clamp head 7. At this time, the multiple sets of clips 13 are in the fixing groove 9, and the fixing core post 14 is inserted into the mating circular groove 10. The entire side sealing protection component 6 is then screwed on using the installation mating head 12, so that the internal thread 11 and the external thread 15 are threadedly connected. At this time, the orientation of the multiple sets of clips 13 relative to the through groove 8 is deflected, and the clips 13 are held in place by the clamp head 7 and cannot be dislodged, preventing natural loosening.

[0028] Furthermore, the outer protective structure 4 includes an outer anti-oxidation coating 16, an outer bonding layer 17, and an outer anti-corrosion layer 18. The outer wall of the substrate 3 is coated with an outer anti-oxidation coating 16, the outer bonding layer 17 is coated on the outer side of the outer anti-oxidation coating 16, and the outer anti-corrosion layer 18 is coated on the outer side of the outer bonding layer 17.

[0029] Furthermore, the inner protective structure 5 includes an inner anti-oxidation coating 19, an inner bonding layer 20, and an inner anti-corrosion layer 21. The inner wall of the substrate 3 is coated with the inner anti-oxidation coating 19, the outer side of the inner anti-oxidation coating 19 is coated with the inner bonding layer 20, and the outer side of the inner bonding layer 20 is coated with the inner anti-corrosion layer 21. The outer anti-oxidation coating 16 and the inner anti-oxidation coating 19 are both coated with anti-oxidation materials, the outer anti-corrosion layer 18 and the inner anti-corrosion layer 21 are coated with anti-corrosion materials, and the outer bonding layer 17 and the inner bonding layer 20 are organic materials. Their function is to block the anti-oxidation materials and anti-corrosion materials, prevent them from penetrating and reacting, and increase adhesion to prevent the anti-corrosion materials from falling off. During production and processing, the substrate 3 is placed in an impregnation tank, and the tank solution is an anti-oxidation material slurry. Hot air drying is used to solidify the anti-oxidation material on the inner and outer walls of the substrate 3. Then, it is placed in impregnation tanks with different slurries for sequential coating.

[0030] Structural Description:

[0031] Pipe 1: A basic component of high-performance cold-drawn bearing steel pipe, serving as the carrier for side sealing protection component 2, outer protection structure 4, inner protection structure 5, etc., and is the main structure constituting the bearing steel pipe;

[0032] Side sealing protection component 2: Composed of side sealing protection component 6, etc., it is connected by a mechanical structure to seal the openings at both ends of the pipe 1, preventing foreign objects from entering the pipe. It is a key structure to resist the intrusion of foreign objects.

[0033] Substrate 3: The attachment base for outer protective structure 4 and inner protective structure 5, providing a surface for the coating of anti-oxidation and anti-corrosion materials, and is the core load-bearing structure of bearing steel pipe;

[0034] The outer protective structure 4 consists of an outer anti-oxidation coating 16, an outer bonding layer 17, and an outer anti-corrosion layer 18. By coating the outer wall of the substrate 3 with anti-oxidation and anti-corrosion materials, it isolates the steel from the erosion of oxygen in the air and the complex external environment, providing protection against oxidation and corrosion for the outer wall of the pipe 1.

[0035] The inner protective structure 5 consists of an inner anti-oxidation coating 19, an inner bonding layer 20, and an inner anti-corrosion layer 21. By coating the inner wall of the substrate 3 with anti-oxidation and anti-corrosion materials, it isolates the steel from the erosion of oxygen in the air and the complex external environment, providing protection against oxidation and corrosion for the inner wall of the pipe 1.

[0036] Side sealing protection component 6: An important component of the side sealing protection assembly 2, it is connected to the pipe 1 through the installation mating head 12, and the clamp 13 on it cooperates with the through groove 8 and other structures on the pipe 1 to achieve the sealing of both ends of the pipe 1 and prevent foreign objects from entering;

[0037] Clip 7: Located at the end of pipe 1, it cooperates with the clip 13 and other structures on the side sealing protection component 6 to play a positioning and limiting role in the connection process of the side sealing protection component 2;

[0038] Through groove 8: Set on the clamp head 7, it cooperates with the clamp 13 on the side sealing protection component 6. It is an important part of the mechanical connection of the side sealing protection component 2 and helps to achieve a stable connection between the side sealing protection component 6 and the pipe 1.

[0039] Fixed slot 9: Set on one side of the clip head 7. When the side sealing protective component 6 is connected to the pipe 1, the clip 13 passes through the through groove 8 and enters the fixed slot 9, which prevents the side sealing protective component 6 from loosening or falling off naturally.

[0040] The docking groove 10 is set at the center of the pipe 1 and is precisely aligned with the fixed core post 14 on the side sealing protection component 6. It is one of the positioning structures when the side sealing protection component 6 is connected to the pipe 1.

[0041] Internal thread 11: Set at the bottom inside the pipe 1, it is threaded to the external thread 15 at the end of the fixed core post 14 to achieve a tight connection between the side sealing protection component 6 and the pipe 1.

[0042] Installation fitting head 12: Located on the side of the side sealing protection 6 away from the pipe 1, used to screw the side sealing protection 6 so that the internal thread 11 and the external thread 15 are threadedly connected, so as to achieve a tight connection between the side sealing protection 6 and the pipe 1.

[0043] Clip 13: Set inside the side sealing protection component 6, corresponding to the through groove 8 on the pipe 1. When connected, it passes through the through groove 8 and enters the fixing slot 9 to form a mechanical limit and prevent the side sealing protection component 6 from loosening.

[0044] Fixed core post 14: It is set in the center of the side sealing protection component 6, and the end is provided with an external thread 15 corresponding to the internal thread 11. It is threaded to the internal thread 11 at the bottom of the pipe 1, and plays the role of connecting and positioning the side sealing protection component 6.

[0045] External thread 15: Set at the end of the fixed core post 14, it is threaded to the internal thread 11 at the bottom of the pipe 1 to achieve a tight connection between the side sealing protection 6 and the pipe 1.

[0046] External anti-oxidation coating 16: Anti-oxidation materials are applied to the outer wall of the substrate 3 to form a dense protective film on the steel surface, which isolates oxygen in the air and slows down the oxidation process of the steel.

[0047] External bonding layer 17: Organic material is applied to the outer side of the outer anti-oxidation coating 16 on the outer wall of the substrate 3 to block the penetration reaction between the anti-oxidation material and the outer anti-corrosion layer 18, increase the adhesion between the coatings, and prevent the outer anti-corrosion layer 18 from falling off.

[0048] External anti-corrosion layer 18: Anti-corrosion material is applied to the outer side of the outer bonding layer 17 on the outer wall of the substrate 3 to resist the corrosion of steel by complex environments such as moisture, acid and alkali, and to provide anti-corrosion protection for the outer wall of the pipe 1.

[0049] Internal anti-oxidation coating 19: Anti-oxidation material is applied to the inner wall of the substrate 3 to form a dense protective film on the steel surface, which isolates oxygen in the air and slows down the oxidation process of the steel.

[0050] Inner bonding layer 20: The outer side of the inner anti-oxidation coating 19, which is coated with organic material on the inner wall of the substrate 3, blocks the penetration reaction between the anti-oxidation material and the inner anti-corrosion layer 21, increases the adhesion between coatings, and prevents the inner anti-corrosion layer 21 from falling off.

[0051] Inner anti-corrosion layer 21: The inner bonding layer 20 of the inner wall of the substrate 3 is coated with anti-corrosion material to resist the corrosion of steel by complex environments such as moisture, acid and alkali, and to provide anti-corrosion protection for the inner wall of the pipe 1.

[0052] Working Principle: This fully protected high-performance cold-drawn bearing steel pipe achieves comprehensive and multi-layered protection for the bearing steel pipe through the coordinated operation of the side sealing protection component 2, the outer protection structure 4, and the inner protection structure 5. This effectively solves problems such as inner wall scratches and oxidation corrosion during transportation and storage, ensuring the quality and service life of the bearing steel pipe. The side sealing protection component 2, as the first line of defense against foreign object intrusion, operates based on a sophisticated mechanical connection design. The side sealing protection component 6, together with the clamp 7, through groove 8, and fixing groove 9 at the end of the pipe 1, forms a stable closed system. When sealing the bearing steel pipe is required, the operator aligns the clamp 13 on the side sealing protection component 6 with the through groove 8 on the clamp 7 of the pipe 1, while simultaneously aligning the fixing core 14 with the mating groove 10. At this point, the clamp 13 can smoothly pass through the through groove 8 and enter the fixing groove 9, initially achieving the positioning of the side sealing protection component 6 and the pipe 1. Subsequently, by screwing on the mounting head 12 on the side sealing protective component 6, the external thread 15 at the end of the fixing core 14 begins to engage with the internal thread 11 at the bottom of the pipe 1. During the threaded connection, the side sealing protective component 6 rotates, and the relative position of the clamp 13 and the through groove 8 deflects. Due to the misalignment between the clamp 13 and the through groove 8, the clamp 13 is firmly held in place by the clamp head 7, forming a mechanical limit. This unique structural design effectively prevents the side sealing protective component 6 from loosening or falling off naturally during transportation bumps and vibrations, thereby tightly sealing the openings at both ends of the steel pipe, preventing foreign objects such as sand and metal fragments from entering the pipe and avoiding scratches on the inner wall of the steel pipe, providing reliable protection for the bearing steel pipe during transportation and relocation. The outer protective structure 4 and the inner protective structure 5 provide long-term protection against oxidation and corrosion for the bearing steel pipe from the perspective of material protection. The outer protective structure 4 consists of an outer anti-oxidation coating 16, an outer bonding layer 17, and an outer anti-corrosion layer 18. The inner protective structure 5 consists of an inner anti-oxidation coating 19, an inner bonding layer 20, and an inner anti-corrosion layer 21. During the production process, the substrate 3 is first placed in an impregnation tank containing an anti-oxidation material slurry. Hot air drying is used to firmly adhere the anti-oxidation material to the inner and outer walls of the substrate 3, forming anti-oxidation coatings (outer anti-oxidation coating 16 and inner anti-oxidation coating 19). The anti-oxidation material forms a dense protective film on the steel surface, isolating oxygen in the air from contact with the steel, effectively slowing down the oxidation process of the steel and preventing rust formation. Subsequently, the substrate 3 is sequentially placed in impregnation tanks containing different slurries to coat the bonding layer (outer bonding layer 17 and inner bonding layer 20) and the anti-corrosion layer (outer anti-corrosion layer 18 and inner anti-corrosion layer 21). By using organic materials for the interlayer, on the one hand, it can block the anti-oxidation materials and anti-corrosion materials, preventing them from reacting chemically due to penetration and affecting the protective performance; on the other hand, the special molecular structure of organic materials can tightly bond with the anti-oxidation coating and anti-corrosion layer, significantly increasing the adhesion between the coatings and preventing the anti-corrosion materials from falling off under long-term storage or external environmental conditions.The anti-corrosion layer uses specialized anti-corrosion materials, effectively resisting the erosion of steel by complex environments such as humidity and acids / alkalis. Whether in high-humidity storage environments or industrial sites with corrosive gases, it provides a robust protective barrier for bearing steel pipes. The outer protective structure 4 and the inner protective structure 5 construct a dual-protection system from the outer and inner walls of the steel pipe, respectively. Through the synergistic effect of anti-oxidation and anti-corrosion materials and the bonding layer, the anti-aging and anti-corrosion capabilities of the bearing steel pipe are significantly improved, extending its storage time and ensuring that the bearing steel pipe maintains good material properties even after long-term storage, laying a solid foundation for the production of high-quality bearings.

[0053] 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 fully protected high-performance cold-drawn bearing steel pipe, comprising a pipe (1), characterized in that: The pipe (1) is provided with side sealing protection components (2) at both ends. The pipe (1) is divided into a base (3), an outer protection structure (4) and an inner protection structure (5). The outer ring surface of the base (3) is provided with an outer protection structure (4), and the inner wall surface of the base (3) is provided with an inner protection structure (5).

2. The fully protected high-performance cold-drawn bearing steel tube according to claim 1, characterized in that: The side sealing protection component (2) includes a side sealing protection component (6) and a mating structure on the pipe (1). A clamp (7) is provided at the end of the pipe (1). Multiple sets of through grooves (8) are provided on the clamp (7). A fixing groove (9) is provided on one side of the clamp (7). A mating circular groove (10) is provided in the center of the pipe (1). An internal thread (11) is provided at the bottom of the pipe (1).

3. The fully protected high-performance cold-drawn bearing steel tube according to claim 2, characterized in that: The side sealing protection component (6) is provided with an installation mating head (12) on the side away from the pipe (1). The side sealing protection component (6) is provided with multiple sets of clips (13) corresponding to the through groove (8). The side sealing protection component (6) is provided with a fixed core column (14) at the center. The fixed core column (14) is provided with an external thread (15) corresponding to the internal thread (11) at its end. The internal thread (11) and the external thread (15) are threadedly connected.

4. The fully protected high-performance cold-drawn bearing steel tube according to claim 1, characterized in that: The outer protective structure (4) includes an outer anti-oxidation coating (16), an outer bonding layer (17), and an outer anti-corrosion layer (18). The outer wall of the substrate (3) is coated with an outer anti-oxidation coating (16), the outer bonding layer (17) is coated on the outside of the outer anti-oxidation coating (16), and the outer anti-corrosion layer (18) is coated on the outside of the outer bonding layer (17).

5. The fully protected high-performance cold-drawn bearing steel tube according to claim 1, characterized in that: The inner protective structure (5) includes an inner anti-oxidation coating (19), an inner bonding layer (20), and an inner anti-corrosion layer (21). The inner wall of the substrate (3) is coated with an inner anti-oxidation coating (19), the outer side of the inner anti-oxidation coating (19) is coated with an inner bonding layer (20), and the outer side of the inner bonding layer (20) is coated with an inner anti-corrosion layer (21).

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