Novel wear-resistant tin bronze bearing

Abstract

The utility model relates to the technical field of tin bronze bearings, and discloses a novel wear-resistant tin bronze bearing which comprises a base body and a wear-resistant layer, the base body is made of steel, particularly 45 # steel or A3 steel, the wear-resistant layer is made of tin bronze, and the wear-resistant layer is tightly combined on the surface of the base body through a centrifugal casting process. The thickness of the wear-resistant layer is at least two millimeters in the unilateral direction, so that the inner hole of the wear-resistant layer is free of sand pores, and the wear-resistant layer is firmly combined with the base body; due to the arrangement of the tin bronze wear-resistant layer, the wear resistance of the bearing is remarkably improved, and the service life is prolonged; a bimetallic structure is adopted, so that the usage amount of precious metal is reduced, and the manufacturing cost is reduced; the base body is made of high-strength steel, tight combination of the wear-resistant layer and the base body is ensured through the centrifugal pouring technology, and casting defects such as sand pores are avoided; the positions and sizes of the mounting holes can be adjusted according to specific application scenes, and diversified requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of tin bronze bearings, and specifically relates to a new type of wear-resistant tin bronze bearing. Background Art

[0002] In industrial production, as an important supporting and transmission component, the performance of the bearing directly affects the operation efficiency and service life of the equipment. Although traditional all-copper bearings have good thermal conductivity and certain wear resistance, they are prone to wear under high load, high-speed operation or harsh working conditions, and the cost is relatively high. Therefore, various new bearing materials have gradually emerged on the market. Among them, tin bronze has attracted attention due to its excellent wear resistance, corrosion resistance and moderate cost.

[0003] Traditional all-copper bush bearings have good antifriction properties, but due to their low strength and easy deformation, they are prone to wear during long-term use, and the cost is relatively high. With the development of industrial technology, higher requirements are put forward for the wear resistance, strength and economy of bearing materials. Therefore, developing a new type of wear-resistant tin bronze bearing to improve the comprehensive performance of the bearing by combining the advantages of steel and tin bronze has become an urgent problem to be solved in the industry. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a new type of wear-resistant tin bronze bearing, which has the advantages of simple structure, low cost and wear resistance, and solves the problems of low strength, easy wear and high cost of all-copper bush bearings in the prior art.

[0006] (2) Technical Solutions

[0007] To achieve the above purposes of simple structure, low cost and wear resistance, the utility model provides the following technical solution: a new type of wear-resistant tin bronze bearing, including a matrix and a wear-resistant layer. The matrix is made of steel, specifically 45# steel or A3 steel. The wear-resistant layer is made of tin bronze. The wear-resistant layer is tightly combined with the surface of the matrix through a centrifugal casting process. The thickness of the wear-resistant layer is at least two millimeters in the unilateral direction, ensuring that there are no sand holes or air holes in the inner hole of the wear-resistant layer, and the combination between the wear-resistant layer and the matrix is firm.

[0008] Preferably, the tin bronze material of the wear-resistant layer is 5-5-5 tin bronze, which has good wear resistance and corrosion resistance.

[0009] Preferably, a transition layer is provided between the matrix and the wear-resistant layer. The transition layer is made of a copper-based alloy and is used to enhance the bonding force between the two materials.

[0010] Preferably, the thickness of the transition layer is between 0.1 mm and 0.5 mm.

[0011] Preferably, the outer surface of the base body is provided with protrusions, and one end of the base body is provided with a threaded hole.

[0012] Preferably, the inner hole surface of the wear-resistant layer is polished to reduce the friction coefficient and improve the wear resistance.

[0013] Preferably, it further includes a mounting bearing installed on the base body, and a mounting hole is provided on the mounting bearing.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a new type of wear-resistant tin bronze bearing, which has the following beneficial effects:

[0016] For this new type of wear-resistant tin bronze bearing, the wear resistance of the bearing is significantly improved by setting a tin bronze wear-resistant layer, and the service life is extended; the use of a bimetallic structure reduces the usage amount of precious metals and lowers the manufacturing cost; the base body is made of high-strength steel, and the centrifugal casting process ensures the tight combination of the wear-resistant layer and the base body, avoiding casting defects such as sand pores; the position and size of the mounting hole can be adjusted according to the specific application scenario to meet diverse requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a front view of the overall structure of the present utility model.

[0019] In the figure: 1, base body; 11, mounting bearing; 2, wear-resistant layer; 3, threaded hole; 4, protrusion; 5, mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Such as Figure 1 and Figure 2As shown in the figure, a new type of wear-resistant tin bronze bearing includes a matrix 1 and a wear-resistant layer 2. The matrix 1 is made of steel, specifically 45# steel or A3 steel. The wear-resistant layer 2 is made of tin bronze. The wear-resistant layer 2 is tightly bonded to the surface of the matrix 1 through a centrifugal casting process. The thickness of the wear-resistant layer 2 is at least two millimeters in the unilateral direction to ensure that there are no sand holes or air holes in the inner hole of the wear-resistant layer 2, and the bonding between the wear-resistant layer 2 and the matrix 1 is firm; the wear-resistant layer 2 is tightly bonded to the surface of the matrix 1 through a centrifugal casting process to form an integrated bimetallic composite structure. The centrifugal casting process ensures the tight bonding between the wear-resistant layer and the matrix, reducing casting defects; among them, the thickness of the wear-resistant layer 2 is at least two millimeters in the unilateral direction to ensure sufficient wear resistance.

[0022] In an embodiment of the present invention, the tin bronze material of the wear-resistant layer 2 is 5-5-5 tin bronze. The wear-resistant layer 2 is made of tin bronze, especially 5-5-5 tin bronze, which has excellent wear resistance and corrosion resistance.

[0023] In an embodiment of the present invention, a transition layer is provided between the matrix 1 and the wear-resistant layer 2. The transition layer is made of a copper-based alloy and is used to enhance the bonding force between the two materials; the transition layer serves as a bridge between the matrix 1 and the wear-resistant layer 2 and can effectively bond the two together tightly. The copper-based alloy has excellent physical and chemical properties and can form a good interfacial bond with the matrix and the wear-resistant layer, thereby improving the bonding strength of the overall structure; under complex working conditions, such as high temperature, high pressure or alternating loads, etc., the transition layer can resist peeling phenomena caused by stress concentration or material differences, ensuring the stability and reliability of the bearing; the existence of the transition layer can smoothly transition the stress changes between the matrix and the wear-resistant layer, reducing stress concentration problems caused by material property differences. This helps to reduce the stress level of the bearing during operation and improve its fatigue resistance; by optimizing the stress distribution, the transition layer can also enhance the overall structural stability of the bearing and prevent local damage or failure caused by uneven stress distribution.

[0024] In an embodiment of the present utility model, the thickness of the transition layer is between 0.1 mm and 0.5 mm; in rotating components such as bearings or grinding wheels, the transition layer can reduce wear caused by friction. Especially under high-load and high-speed operating conditions, its wear resistance can significantly improve the service life of the components; for grinding tools such as grinding wheels, the transition layer can prevent cracking or deformation phenomena caused by the thermal expansion of the working layer or the thermal expansion and contraction of the substrate, ensuring the stable performance of the tool during long-term use; the thickness of the transition layer can be adjusted according to specific application scenarios to adapt to different working conditions and performance requirements. For example, in occasions where high wear resistance is required, the thickness of the transition layer can be appropriately increased; while in occasions with high precision requirements, the thickness of the transition layer needs to be controlled to ensure machining accuracy; in high-precision machining tools such as superhard grinding wheels, a reasonable thickness of the transition layer can ensure the tight bonding between the working layer and the substrate, reduce machining errors caused by mismatching stresses, and improve machining accuracy and surface quality.

[0025] In an embodiment of the present utility model, the outer surface of the substrate 1 is provided with a protrusion 4, and one end of the substrate 1 is provided with a threaded hole 3; the protrusion 4 can be used as a positioning or guiding element to help quickly and accurately position the substrate 1 during the assembly process, reduce assembly errors, and improve assembly efficiency; in some cases, the protrusion 4 can also be used as a reinforcing rib to enhance the local structural strength of the substrate 1 and prevent damage caused by stress concentration; the threaded hole 3 can meet the connection requirements of various materials. Whether it is metal, plastic or other composite materials, fastening can be achieved through threaded connection.

[0026] In an embodiment of the present utility model, the inner hole surface of the wear-resistant layer 2 is polished to reduce the friction coefficient and improve the wear resistance; the polished inner hole surface is smoother, reducing the small protrusions and depressions on the contact area with the mating components, thereby reducing the frictional resistance. This helps to reduce the energy loss of the bearing during operation and improve the mechanical efficiency; the smooth inner hole surface helps the uniform distribution and penetration of lubricating oil, forming an effective lubricating film. This lubricating film can further reduce the friction coefficient, reduce friction and wear, and also helps with heat dissipation and reduces the working temperature; the polishing treatment can, to a certain extent, increase the hardness of the inner hole surface, making it more wear-resistant. The surface with higher hardness can better resist wear and scratches from mating components and extend the service life of the bearing; due to the reduction of the friction coefficient and the improvement of the lubrication conditions, the wear amount of the bearing during operation will also be correspondingly reduced. This not only helps to maintain the accuracy and stability of the bearing but also reduces the maintenance and replacement costs caused by wear; the polished inner hole surface is more uniformly smooth, reducing the possibility of stress concentration. This helps to improve the fatigue resistance of the bearing, enabling it to better withstand the action of alternating loads and impact loads.

[0027] In an embodiment of the present utility model, it further includes a mounting bearing 11 installed on the base body 1. An installation hole 5 is provided on the mounting bearing 11, and the position and size of the installation hole can be adjusted according to specific application scenarios to meet the requirements of different devices; the position of the installation hole 5 can be adjusted according to specific application scenarios, which means that the bearing can be flexibly installed on various devices without worrying about the problem of mismatch between the installation hole and the device interface. This flexibility greatly improves the application range and versatility of the bearing; in addition to the adjustable position, the size of the installation hole 5 can also be customized according to actual needs. This ensures that the bearing can be used in conjunction with fasteners of different specifications and sizes to meet the fastening requirements of various devices; due to the flexibility of the mounting bearing 11 and the installation hole 5, device manufacturers do not need to carry out excessive customized design for the installation of the bearing during the design process. This reduces the design complexity and cost and speeds up the product development cycle; the standardized mounting bearing and installation hole make the installation process of the bearing simpler and faster. At the same time, when maintenance or replacement of the bearing is required, the disassembly and installation work can also be quickly completed, reducing the maintenance cost and time.

[0028] Working principle: The wear-resistant layer 2 is made of 5-5-5 tin bronze material, which has excellent wear resistance and corrosion resistance, can effectively resist wear and corrosion in the working environment, and extend the service life of the bearing; the thickness of the wear-resistant layer 2 is at least two millimeters in the unilateral direction. This design ensures that the wear-resistant layer has sufficient thickness to withstand wear during operation, and at the same time avoids early failure caused by insufficient thickness; the inner hole surface of the wear-resistant layer 2 is polished to reduce the friction coefficient and further improve the wear resistance. This treatment enables the bearing to rotate more smoothly during operation, reducing heat and wear generated by friction; a transition layer is provided between the base body 1 and the wear-resistant layer 2, and this transition layer is made of a copper-based alloy. The setting of the transition layer enhances the bonding force between the two materials, enabling the wear-resistant layer to adhere more firmly to the base body and avoiding peeling or delamination phenomena caused by poor bonding; the thickness of the transition layer is controlled between 0.1 mm and 0.5 mm. This thickness range not only ensures sufficient bonding strength but also avoids material waste and increased processing difficulty caused by excessive thickness; the base body 1 is made of steel, specifically high-strength steels such as 45# steel or A3 steel. These steels have excellent mechanical properties and processing properties, and can meet the strength and stiffness requirements of the bearing during operation; the outer surface of the base body 1 is provided with protrusions 4, which can increase the contact area and friction force between the base body and other components, improving the stability and reliability of the connection. At the same time, the protrusions can also be used as positioning or guiding elements to help quickly and accurately position the base body during the assembly process; one end of the base body 1 is provided with threaded holes 3, which can be used in conjunction with fasteners such as bolts and screws to achieve a firm connection between the bearing and other components. The setting of the threaded holes improves the flexibility and reliability of the connection, enabling the bearing to be easily installed and disassembled; during operation, the wear-resistant layer 2 of the bearing directly bears the wear and corrosion from the working environment. Due to its excellent wear resistance and corrosion resistance, the wear-resistant layer can maintain a good working state for a long time, reducing the performance degradation and failure risk caused by wear and corrosion; at the same time, the presence of the transition layer enhances the bonding force between the wear-resistant layer and the base body, avoiding peeling or delamination phenomena caused by poor bonding. This enables the bearing to maintain stable performance and reliable operation in a harsh working environment; the design of the base body ensures the overall strength and stiffness requirements of the bearing, enabling the bearing to withstand various forces and torques during operation. The design of the protrusions and threaded holes improves the stability and flexibility of the connection, enabling the bearing to be easily used in conjunction with other components.

[0029] In summary, the new wear-resistant tin bronze bearing significantly improves the wear resistance of the bearing and extends its service life by setting a tin bronze wear-resistant layer; adopts a bimetallic structure, reduces the usage of precious metals, and lowers the manufacturing cost; uses high-strength steel for the matrix and combines with the design of reinforcing bosses to improve the overall structural strength; the centrifugal casting process ensures the tight combination of the wear-resistant layer and the matrix, avoiding casting defects such as sand pores; the position and size of the mounting holes can be adjusted according to specific application scenarios to meet diverse requirements.

[0030] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of wear-resistant tin bronze bearing, comprising a matrix (1) and a wear-resistant layer (2). The matrix (1) is made of steel, specifically 45# steel or A3 steel. The wear-resistant layer (2) is made of tin bronze. The wear-resistant layer (2) is tightly bonded to the surface of the matrix (1) through a centrifugal casting process. It is characterized in that, The thickness of the wear-resistant layer (2) is at least two millimeters in the unilateral direction, ensuring that there are no sand holes or air holes in the inner hole of the wear-resistant layer (2), and the combination between the wear-resistant layer (2) and the substrate (1) is firm.

2. A novel wear-resistant tin bronze bearing according to claim 1, characterized in that: The tin bronze material of the wear-resistant layer (2) is 5-5-5 tin bronze, which has good wear resistance and corrosion resistance.

3. A novel wear-resistant tin bronze bearing according to claim 1, characterized in that: A transition layer is provided between the substrate (1) and the wear-resistant layer (2), and the transition layer is made of a copper-based alloy and is used to enhance the bonding force between the two materials.

4. A novel wear-resistant tin bronze bearing according to claim 3, characterized in that: The thickness of the transition layer is between 0.1 mm and 0.5 mm.

5. A novel wear-resistant tin bronze bearing according to claim 1, characterized in that: The outer surface of the substrate (1) is provided with a protrusion (4), and a threaded hole (3) is provided at one end of the substrate (1).

6. A novel wear-resistant tin bronze bearing according to claim 1, wherein: The inner hole surface of the wear-resistant layer (2) is polished to reduce the friction coefficient and improve the wear resistance.

7. A novel wear-resistant tin bronze bearing according to claim 1, characterized in that: It further includes a mounting bearing (11) mounted on the substrate (1), and a mounting hole (5) is provided on the mounting bearing (11).

Images