Noise-reduction wear-resistant steel ball

Abstract

The utility model discloses a noise-reduction wear-resistant steel ball, which relates to the technical field of wear-resistant steel balls, and comprises a steel ball body, a limiting groove is arranged on the surface of the steel ball body, a wear-resistant layer is fixedly connected in the limiting groove, an internal noise-reduction structure is fixedly connected in the steel ball body, and the wear-resistant layer is fixedly connected in the internal noise-reduction structure. The internal noise reduction structure comprises a filling cavity and a filling layer in the filling cavity. The effect of keeping the overall strength of the steel ball is achieved through the honeycomb-shaped filling cavities, in actual use, the compression strength loss of the steel ball is smaller than 5%, the steel ball body has good stability, the effect of absorbing vibration energy is achieved through the filling layer made of the composite damping material, and the service life of the steel ball is prolonged. And therefore, the steel ball body has a good noise reduction effect.

Description

Technical Field

[0001] This utility model relates to the field of wear-resistant steel balls, and more particularly to a noise-reducing wear-resistant steel ball. Background Technology

[0002] Wear-resistant steel balls, also known as wear-resistant media for grinding mills, are consumables mainly used for grinding materials to make them finer to meet usage standards. They are primarily used in mining, power plants, cement plants, steel plants, silica sand plants, coal chemical industries, and other fields.

[0003] In existing technologies, noise-reducing steel balls are mostly coated with rubber or filled with internal cavities, but there are problems such as rubber easily falling off and fillers reducing structural strength; while wear-resistant steel balls with surface coatings can delay wear, they cannot solve the noise problem.

[0004] Therefore, this utility model proposes a noise-reducing and wear-resistant steel ball that can take into account noise reduction, wear resistance and structural stability. Through the synergistic effect of internal damping structure and surface strengthening layer, it reduces collision noise and improves wear resistance, thereby extending service life. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a noise-reducing and wear-resistant steel ball, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a noise-reducing and wear-resistant steel ball, comprising a steel ball body, a limiting groove formed on the surface of the steel ball body, a wear-resistant layer fixedly connected in the limiting groove, and an internal noise-reducing structure fixedly connected inside the steel ball body, the internal noise-reducing structure comprising a filling cavity and a filling layer therein.

[0007] As a further technical solution of this utility model, the limiting groove is arranged in a spiral groove array along the surface of the steel ball body, the groove depth is 0.3-0.5mm, and the pitch is 1 / 8-1 / 6 of the diameter of the steel ball.

[0008] As a further technical solution of this utility model, the wear-resistant layer is set as a nano-tungsten carbide coating, which is embedded in the limiting groove, and the thickness of the wear-resistant layer is 50-80μm.

[0009] As a further technical solution of this utility model, the filling cavity is set as a honeycomb-shaped cavity symmetrically distributed along the inside of the steel ball, and the cavity wall thickness is 1 / 5-1 / 4 of the radius of the steel ball.

[0010] As a further technical solution of this utility model, the filling layer is set as a silicone-metal powder composite damping filling material, and its filling rate in the filling cavity is ≥85%.

[0011] This invention provides a noise-reducing and wear-resistant steel ball, which has the following advantages compared with the prior art:

[0012] 1. The noise-reducing and wear-resistant steel ball of this design uses a limiting groove arranged in a spiral array along the surface of the steel ball body to facilitate the embedding and fixing of the wear-resistant layer. At the same time, in actual use, the limiting groove arranged in a spiral array can disperse the airflow vortex, thereby achieving the effect of noise reduction. By setting the wear-resistant layer as a nano tungsten carbide coating, the wear resistance of the steel ball body is enhanced in actual use.

[0013] 2. The noise-reducing and wear-resistant steel ball designed in this paper maintains the overall strength of the steel ball by filling the cavity with a honeycomb-shaped cavity. In actual use, its compressive strength loss is less than 5%, which makes the steel ball body have good stability. The filling layer is made of composite damping material to absorb vibration energy, thereby making the steel ball body have a good noise reduction effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a noise-reducing and wear-resistant steel ball;

[0015] Figure 2 This is a schematic diagram of the wear-resistant layer distribution of a noise-reducing and wear-resistant steel ball;

[0016] Figure 3 This is a schematic diagram of the internal structure of a noise-reducing and wear-resistant steel ball.

[0017] Figure 4 For a type of noise-reducing and wear-resistant steel ball Figure 2 Enlarged view of the structure at point A in the middle;

[0018] Figure 5 For a type of noise-reducing and wear-resistant steel ball Figure 3 Enlarged view of the structure at point B in the middle;

[0019] In the diagram: 1. Steel ball body; 2. Wear-resistant layer; 3. Internal noise reduction structure; 4. Limiting groove; 5. Filling cavity; 6. Filling 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5This utility model provides a noise reduction and wear-resistant steel ball technical solution: it includes a steel ball body 1, a limiting groove 4 is formed on the surface of the steel ball body 1, a wear-resistant layer 2 is fixedly connected in the limiting groove 4, and an internal noise reduction structure 3 is fixedly connected inside the steel ball body 1. The internal noise reduction structure 3 includes a filling cavity 5 and a filling layer 6 inside it.

[0022] like Figure 1 , 2 and Figure 4 As shown, the steel ball body 1 is cast from high-carbon alloy steel, and its surface is hardened by quenching. The limiting groove 4 is arranged in a spiral groove array along the surface of the steel ball body 1. The groove depth is 0.3-0.5mm, and the pitch is 1 / 8-1 / 6 of the diameter of the steel ball. The wear-resistant layer 2 is a nano-tungsten carbide coating, which is embedded in the limiting groove 4. The thickness of the wear-resistant layer 2 is 50-80μm. The limiting groove 4 arranged in a spiral array along the surface of the steel ball body 1 facilitates the embedding and fixing of the wear-resistant layer 2. At the same time, in actual use, the limiting groove 4 arranged in a spiral array can disperse the airflow vortex, thereby achieving the effect of noise reduction. The wear-resistant layer 2, which is a nano-tungsten carbide coating, enhances the wear resistance of the steel ball body 1 in actual use.

[0023] During use, the limiting grooves 4 formed by the spiral groove array on the outer surface of the steel ball body 1 can disperse the airflow vortex in actual use, thereby reducing the noise generated by the steel ball body 1 by 15-20dB. At the same time, in conjunction with the wear-resistant layer 2 embedded in it, which is a nano tungsten carbide coating with a hardness of HV2200, the wear rate of the steel ball body 1 is reduced by more than 40% compared with ordinary steel balls, thus achieving a wear-resistant effect.

[0024] like Figure 3 and Figure 5 As shown, the filling cavity 5 is configured as a honeycomb-shaped cavity symmetrically distributed along the center of the steel ball. The cavity wall thickness is 1 / 5 to 1 / 4 of the steel ball radius. The filling layer 6 is a silicone-metal powder composite damping filler material (a damping material of the prior art), and its filling rate in the filling cavity 5 is ≥85%. The honeycomb-shaped filling cavity 5 achieves the effect of maintaining the overall strength of the steel ball. In actual use, its compressive strength loss is <5%, which makes the steel ball body 1 have good stability. The filling layer 6, which is a composite damping material, achieves the effect of absorbing vibration energy, thereby making the steel ball body 1 have a good noise reduction effect.

[0025] The working principle of this utility model is as follows: When in use, the internal noise reduction structure 3, together with the limiting groove 4 on the surface of the steel ball body 1, forms a double noise reduction. The internal honeycomb cavity, together with the damping material it is filled with, absorbs vibration energy, while the spiral groove on the surface disperses the airflow vortex, reducing noise by 15-20dB. At the same time, it has a wear-resistant strengthening effect. The wear-resistant layer 2, which is set as a nano-tungsten carbide coating, has a hardness of HV2200 on the surface of the steel ball body 1, which has good wear resistance than ordinary steel balls. Meanwhile, the internal filling cavity 5 has high stability and can effectively maintain the overall strength of the steel ball, so that its compressive strength loss is <5%. This device can be applied to mining ball mills, cement grinding systems and other scenarios, and its service life is expected to be extended by more than 50% per use.

[0026] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A noise-reducing wear-resistant steel ball, characterized by: The utility model relates to a steel ball with noise reduction function, including steel ball body (1), the surface of steel ball body (1) is seted with limit recess (4), limit recess (4) is fixedly connected with wear -resistant layer (2), the inside of steel ball body (1) is fixedly connected with inside noise reduction structure (3), and inside noise reduction structure (3) includes filling cavity (5) and the filling layer (6) in it.

2. The noise-reducing wear-resistant steel ball of claim 1, wherein: The limit recess (4) is arranged in spiral recess array along the surface of the steel ball body (1), the recess depth is 0.3-0.5mm, and the pitch is 1 / 8-1 / 6 of the diameter of the steel ball.

3. The noise-reducing wear-resistant steel ball of claim 1, wherein: The wear-resistant layer (2) is set as a nano tungsten carbide coating, embedded along the limit recess (4), and the thickness of the wear-resistant layer (2) is 50-80μm.

4. The noise-reducing wear-resistant steel ball of claim 1, wherein: The filling cavity (5) is arranged as a honeycomb cavity symmetrically distributed along the inside of the steel ball, and the cavity wall thickness is 1 / 5-1 / 4 of the radius of the steel ball.

5. The noise-reducing wear-resistant steel ball of claim 1, wherein: The filling layer (6) is set as a silica gel-metal powder composite damping filling material, and the filling rate in the filling cavity (5) is ≥85%.

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