High-strength silicon nitride cylinder

Abstract

The utility model relates to the technical field of ceramic products, in particular to a high-strength silicon nitride cylinder. The reinforcing structure comprises a cylinder body, and the inner surface of the cylinder body is fixedly connected with a plurality of reinforcing cavities. A plurality of hexagonal reinforcing cavities distributed in a honeycomb shape are formed in the cylinder body, the reinforcing cavities penetrate from one end of the cylinder to the other end of the cylinder, the thickness of the wall faces of the reinforcing cavities is uniform, and the reinforcing cavities, the outer wall face of the cylinder body and the wall faces of the adjacent reinforcing cavities are of an integrated structure. Meanwhile, on the premise that the strength is guaranteed, the weight of the cylinder is effectively reduced, the lightweight design is achieved, compared with a traditional silicon nitride cylinder, the compressive strength is improved, the bending strength is improved, higher loads can be borne, the problems of deformation and breakage in a high-strength working environment are effectively avoided, and the service life of the cylinder is prolonged. Meanwhile, compared with a solid silicon nitride cylinder with the same size, the weight is reduced, and the solid silicon nitride cylinder can be suitable for application scenes with strict requirements on the weight.

Description

TECHNICAL FIELD

[0001] The utility model relates to ceramic material product technical field especially relates to a high strength silicon nitride cylinder. BACKGROUND

[0002] Silicon nitride ceramics have been widely used in many fields due to their excellent properties such as high strength, high hardness, high temperature resistance, wear resistance and good chemical stability. In the mechanical manufacturing, aerospace, electronics and other industries, silicon nitride cylinders are often used as key components.

[0003] During the preparation of the silicon nitride cylinder, due to process limitations, there are inevitably micro defects such as pores and micro cracks inside. These defects will become stress concentration points when subjected to high load, leading to premature failure of the material. In addition, the traditional silicon nitride formula and sintering process cannot fully develop the potential performance of the material, making it difficult for the cylinder to meet the growing industrial demand. In some work environments where the load requirement of the component is extremely high, the existing silicon nitride cylinder frequently deforms or even breaks, not only increasing the maintenance cost of the equipment, but also seriously affecting the production efficiency and normal operation of the equipment. Therefore, a high-strength silicon nitride cylinder is proposed to solve the above problems. SUMMARY

[0004] The utility model discloses a high-strength silicon nitride cylinder to solve the problem of deformation or even breakage of the existing silicon nitride cylinder in the prior art, which not only increases the maintenance cost of the equipment, but also seriously affects the production efficiency and normal operation of the equipment.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-strength silicon nitride cylinder, comprising a cylindrical body, a plurality of reinforcing chambers are fixedly connected to the inner surface of the cylindrical body, and the reinforcing chambers are hexagonal.

[0006] The above-mentioned components achieve the following effects: a plurality of hexagonal reinforcing chambers in a honeycomb pattern are arranged inside the cylindrical body. These reinforcing chambers penetrate from one end of the cylinder to the other end. The wall thickness of the reinforcing chambers is uniform, and the outer wall of the cylindrical body and the wall of the adjacent reinforcing chambers are integrated. At the same time, the honeycomb structure effectively reduces the weight of the cylinder while ensuring strength, achieving lightweight design. Compared with traditional silicon nitride cylinders, the compressive strength and bending strength are improved, and the cylinder can withstand higher loads, effectively avoiding deformation and breakage in high-strength working environments. Compared with solid silicon nitride cylinders of the same size, the weight is reduced, which can be applied to some applications with strict weight requirements.

[0007] Preferably, the inner surface of the cylindrical body is fixedly connected with a connecting rib, and the connecting rib is in a cross shape.

[0008] The above-mentioned components achieve the effect that when the cylindrical body bears axial pressure, the pressure can be uniformly dispersed through the reinforced chamber wall surface and the connecting rib plate, effectively improving the compression resistance, and when the cylindrical body bears lateral bending force, the cross-shaped connecting rib plate can provide additional bending resistance support, greatly enhancing the bending resistance of the cylindrical body.

[0009] Preferably, the arc surface of the cylindrical body is fixedly connected with a plurality of reinforcing ribs, and the reinforcing ribs are in a trapezoidal shape.

[0010] The above-mentioned components achieve the effect that the reinforcing ribs are integrally formed with the cylindrical body, further enhancing the surface strength of the cylindrical body and improving the ability of the cylindrical body to resist external impact and wear.

[0011] Preferably, the reinforced chamber is filled with a filler, and the material of the filler is aerogel material.

[0012] The above-mentioned components achieve the effect that aerogel has extremely low density and excellent thermal insulation performance, and after being filled in the chamber, on the one hand, the overall weight of the cylindrical body can be further reduced, and the lightweight advantage is enhanced; on the other hand, in a high-temperature environment, the aerogel can effectively prevent heat transfer, play a good heat insulation role, make the temperature distribution inside the cylindrical body more uniform, avoid material damage caused by too large temperature gradient, and thus improve the stability and reliability of the cylindrical body in high-temperature working conditions.

[0013] Preferably, the surface of the cylindrical body is coated with a protective layer, and the material of the protective layer is boron carbide material.

[0014] The above-mentioned components achieve the effect that boron carbide has extremely high hardness and wear resistance, and after being coated on the surface of the silicon nitride cylindrical body, a solid protective layer can be formed, which can effectively resist the scratching and erosion of external particles in a high-wear environment, protect the silicon nitride cylindrical body from being damaged, further improve the service life of the cylindrical body, and the boron carbide coating also has good chemical stability, can resist chemical corrosion to a certain extent, and widens the application scenarios of the silicon nitride cylindrical body.

[0015] In summary, the beneficial effects of the present application are:

[0016] 1. The utility model discloses a plurality of hexagonal reinforcing chambers are arranged in the honeycomb shape in the inside of the cylindrical body, these reinforcing chambers are from one end of cylinder and are penetrated to the other end, the wall surface thickness of reinforcing chamber is even, and with the outer wall surface of cylindrical body and the wall surface of adjacent reinforcing chamber are integral structure, simultaneously, the honeycomb structure is under the premise of guaranteeing strength, effectively reduce the weight of cylinder, realize light weight design, compare traditional silicon nitride cylinder, the compression strength has improved, the bending strength has improved, can bear higher load, effectively avoid the deformation and fracture problem under the high -strength working environment, and compare the solid silicon nitride cylinder of same size, the weight has reduced for some weight have strict requirement's application scene can be applicable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 It is the structure schematic diagram of the cylindrical body in the utility model;

[0019] Figure 3 It is the structure schematic diagram of the reinforcing rib in the utility model;

[0020] Figure 4 It is the sectional view of the cylindrical body in the utility model.

[0021] Legend: 1, cylindrical body; 2, reinforcing chamber; 3, connecting rib; 4, filler; 5, protective layer; 6, reinforcing rib. DETAILED DESCRIPTION

[0022] Reference Figures 1-4The utility model provides a technical scheme: a high -strength silicon nitride cylinder, including the cylinder body, the inner surface fixed connection of cylinder body has a plurality of reinforcing chamber, reinforcing chamber is hexagonal. In the inside of cylinder body is provided with a plurality of honeycomb distribution hexagonal reinforcing chamber, these reinforcing chambers are from the one end of cylinder to the other end, the wall thickness of reinforcing chamber is uniform, and with the outer wall of cylinder body and the wall of adjacent reinforcing chamber is integral structure, simultaneously, the honeycomb structure under the premise of guaranteeing strength, effectively reduce the weight of cylinder, realize light weight design, compared with traditional silicon nitride cylinder, the compressive strength is improved, the bending strength is improved, can bear higher load, effectively avoid the deformation and fracture problem under high -strength working environment, compared with the solid silicon nitride cylinder of same size simultaneously, the weight is lightened for some strict weight requirement application scene can be applicable, the inner surface fixed connection of cylinder body has the connecting rib, the connecting rib is cross -shaped. Make cylinder body when bearing axial pressure, pressure can be evenly dispersed through reinforcing chamber wall and connecting rib board, effectively improve the compression resistance, when bearing transverse bending force, the cross - connecting rib board can provide additional bending support, greatly enhance the bending performance of cylinder, the circular arc surface fixed connection of cylinder body has a plurality of reinforcing ribs, the shape of reinforcing rib is trapezoidal. Reinforcing rib and cylinder body are integrally formed, further enhance the surface strength of cylinder body, improve the ability of cylinder to resist external impact and wear, the reinforcing chamber is filled with filler, and the material of the filler is aerogel material. Aerogel has extremely low density and excellent heat insulation performance, after being filled in the chamber, on the one hand, it can further reduce the overall weight of the cylinder and enhance the lightweight advantage; on the other hand, in a high temperature environment, aerogel can effectively prevent heat transfer, play a good heat insulation effect, make the temperature distribution in the cylinder body more uniform, avoid material damage caused by excessive temperature gradient, thereby improving the stability and reliability of the cylinder body under high temperature working condition, the surface of the cylinder body is coated with a protective layer, and the material of the protective layer is boron carbide. Boron carbide has extremely high hardness and wear resistance, and after being coated on the surface of the silicon nitride cylinder, a solid protective layer can be formed, which can effectively resist the scratching and erosion of external particles in a high wear environment, protect the silicon nitride cylinder body from damage, further improve the service life of the cylinder body, and the boron carbide coating also has good chemical stability, can resist chemical corrosion to some extent, and broaden the application scenarios of the silicon nitride cylinder.

[0023] The working principle is that a plurality of hexagonal reinforcing chambers in a honeycomb shape are arranged in the interior of the cylindrical body, the reinforcing chambers penetrate from one end of the cylinder to the other end, the wall thickness of the reinforcing chambers is uniform, and the wall of the reinforcing chambers and the wall of the adjacent reinforcing chambers and the outer wall of the cylindrical body are integrated structures, meanwhile, the honeycomb structure effectively reduces the weight of the cylinder under the premise of ensuring the strength, realizes the lightweight design, the compressive strength is improved compared with the traditional silicon nitride cylinder, the bending strength is improved, a higher load can be borne, the deformation and fracture problems in the high-strength working environment are effectively avoided, meanwhile, compared with the solid silicon nitride cylinder of the same size, the weight is reduced, and the application scenarios with strict requirements on the weight can be applied, the connecting ribs are arranged, so that when the cylindrical body bears the axial pressure, the pressure can be uniformly dispersed through the reinforcing chamber wall and the connecting rib plate, the compressive capacity is effectively improved, when the transverse bending force is borne, the cross-shaped connecting rib plate can provide additional bending support, the bending performance of the cylinder is greatly enhanced, the reinforcing ribs are fixed on the circumference of the cylindrical body and are integrally formed with the cylindrical body, the surface strength of the cylindrical body is further enhanced, the ability of the cylinder to resist external impact and wear is improved, the aerogel filled in the reinforcing chambers has extremely low density and excellent heat insulation performance, after being filled in the chambers, on the one hand, the overall weight of the cylinder can be further reduced, and the lightweight advantage is enhanced; on the other hand, in a high-temperature environment, the aerogel can effectively prevent heat transfer, has a good heat insulation effect, the temperature distribution in the interior of the cylindrical body is more uniform, material damage caused by excessive temperature gradient is avoided, and therefore the stability and reliability of the cylindrical body in the high-temperature working condition are improved, the surface protective layer boron carbide has extremely high hardness and wear resistance, after being coated on the surface of the silicon nitride cylinder, a solid protective layer can be formed, in a high-wear environment, the boron carbide coating can effectively resist the scratching and erosion of external particles, protects the silicon nitride cylindrical body from being damaged, and further improves the service life of the cylindrical body, meanwhile, the boron carbide coating also has good chemical stability, can resist chemical corrosion to a certain extent, and widens the application scenarios of the silicon nitride cylinder.

[0024] In the description of the present application, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A high-strength silicon nitride cylinder, comprising a cylindrical body (1), characterized in that: The inner surface of the cylindrical body (1) is fixedly connected with several reinforcing chambers (2), and the reinforcing chambers (2) are hexagonal.

2. The high-strength silicon nitride cylinder according to claim 1, characterized in that: The inner surface of the cylindrical body (1) is fixedly connected with a connecting rib (3), which is cross-shaped.

3. A high-strength silicon nitride cylinder according to claim 1, characterized in that: The cylindrical body (1) has several reinforcing ribs (6) fixedly connected to its arc surface, and the reinforcing ribs (6) are trapezoidal in shape.

4. A high-strength silicon nitride cylinder according to claim 1, characterized in that: The reinforced chamber (2) is filled with a filler (4), and the filler (4) is made of aerogel.

5. A high-strength silicon nitride cylinder according to claim 1, characterized in that: The surface of the cylindrical body (1) is coated with a protective layer (5), and the protective layer (5) is made of boron carbide.

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