Preparation process of high-hardness ceramic valve plate

Abstract

The invention discloses a preparation process of a high-hardness ceramic valve plate, the preparation formula of the high-hardness ceramic valve plate comprises the following main components: a strength improving component, a corrosion resistance improving component and a reinforcing component, the strength improving component is composed of alumina, silicon carbide, silicon nitride, zirconia, boron carbide and machine-made sand, and the reinforcing component is composed of alumina, silicon carbide, silicon nitride, zirconia, boron carbide and machine-made sand. The corrosion resistance improving component is composed of tool steel powder, polyamide, nylon, polytetrafluoroethylene, diamond and cubic boron nitride, and the reinforcing component is composed of glass fibers, ceramic fibers, a fiber reinforced composite material and a nano-particle reinforcing material. Through the aluminum oxide, the silicon carbide, the silicon nitride, the zirconium oxide, the boron carbide and the machine-made sand, the strength of the ceramic valve plate can be higher, the phenomenon that the ceramic valve plate cracks due to insufficient strength is avoided, and the problem that an existing ceramic valve plate is prone to cracking after being used for a long time due to insufficient strength is solved. Therefore, the service life of the ceramic valve plate cannot be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic valve discs, and in particular to a preparation process of a high-hardness ceramic valve disc. Background Art

[0002] According to the published patent, the patent name is: A method for preparing a ceramic valve disc, and the patent number is: 202011294006.6. The present invention discloses a method for preparing a ceramic valve disc, which uses clay, diabase, ZrO2, TiC, Fe / Cr mixture powder, WC, TiO2 and Y2O3 as raw materials for preparation. During the preparation, different raw materials are first crushed and then ball-milled using a ball mill to form granular raw materials with different particle sizes. At the same time, ZrO2 is divided into three different particle size materials, and the raw materials of the same particle size are mixed, and clay, diabase and ZrO3 are used to prepare the ceramic valve disc. 2. The mixture is pressed into a block intermediate material for high-temperature fumigation. After fumigation, it is crushed and ground and then mixed with other mixed powders to form corresponding ceramic green sheets by dry pressing. The ceramic green sheets are placed in a kiln for sintering. After sintering, they are cooled to room temperature and then ground and polished to obtain ceramic valve sheets. S1 adds clay and diabase that meet the above mass ratio into a ball mill, and adds anhydrous ethanol for ball milling. However, the strength of the ceramic valve sheet in the above is not enough. After long-term use, it is easy to crack due to corrosion, dust and other factors, resulting in the service life of the ceramic valve sheet cannot be guaranteed.

[0003] Therefore, it is necessary to redesign the ceramic valve plate to effectively prevent the phenomenon of insufficient strength. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the purpose of the present invention is to provide a preparation process of a high-hardness ceramic valve plate, which has the advantage of increasing strength and solves the problem of insufficient strength.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a preparation process of a high-hardness ceramic valve plate, wherein the main components of the high-hardness ceramic valve plate preparation formula are: a strength-enhancing component, a corrosion-resistance-enhancing component and a reinforcement component.

[0006] As preferred embodiment of the present invention, the strength-enhancing component consists of aluminum oxide, silicon carbide, silicon nitride, zirconium oxide, boron carbide and machine-made sand, the corrosion resistance-enhancing component consists of tool steel powder, polyamide, nylon, polytetrafluoroethylene, diamond and cubic boron nitride, and the reinforcement component consists of glass fiber, ceramic fiber, fiber-reinforced composite material and nanoparticle reinforced material.

[0007] As a preferred embodiment of the present invention, the contents of the components are: 100 parts of aluminum oxide, 50 parts of silicon carbide, 65 parts of zirconium oxide, 40 parts of boron carbide, and 30 kg / m3 of machine-made sand.3 , 73 parts of tool steel powder, 18 parts of polyamide, 38 parts of nylon, 20 parts of polytetrafluoroethylene, 9 parts of diamond, 50 parts of cubic boron nitride, 70 parts of glass fiber, 50 parts of fiber-reinforced composite material, 56 parts of nano-particle reinforced material.

[0008] Preferably in the present invention, the method includes step a) material preparation; step b) forming process; step c) sintering process; step d) machining and finishing process; step e) surface treatment:

[0009] Step a) Material preparation: Select suitable ceramic materials, then screen and distinguish them, and mix them into a powder form according to a specific ratio;

[0010] Step b) Forming process: Use a forming process to form the powdered material into a green body (also called a preform) with the required shape and size. The forming methods include injection molding, pressing molding, extrusion molding, etc.;

[0011] Step c) Sintering process: Sinter the formed green body at a high temperature. Sintering is to heat the powdered material to near or reach its melting point, so that the particles bond together and form a dense ceramic material. In this process, temperature and time are key parameters and need to be precisely controlled according to the materials and requirements;

[0012] Step d) Machining and finishing process: The sintered ceramic body needs to be machined and finished to obtain precise dimensions, shape, and a smooth surface. The processed material is trimmed through processes such as cutting, grinding, and polishing;

[0013] Step e) Surface treatment: According to requirements, surface treatment can be carried out. Surface treatment is carried out through processes such as polishing, coating, and film plating, and then the smoothness, wear resistance, and corrosion resistance of the valve plate are improved. After the surface treatment is completed, it can be taken out and stored.

[0014] Preferably in the present invention, during the sintering process, the green body needs to be cleaned and then dried.

[0015] Preferably in the present invention, the material preparation is carried out in a dust-free workshop, and the proportion of each material is mixed according to the ratio requirements.

[0016] Preferably in the present invention, after the sintering process, it needs to be cooled so that the material can be quickly cooled for subsequent handling and use.

[0017] Preferably in the present invention, during the surface treatment, a dust suction mechanism is required for dust suction to avoid excessive impurities affecting the subsequent treatment progress.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. With alumina, silicon carbide, silicon nitride, zirconia, boron carbide and manufactured sand, the strength of the ceramic valve plate can be made higher, avoiding the phenomenon of cracking due to insufficient strength of the ceramic valve plate. With tool steel powder, polyamide, nylon, polytetrafluoroethylene, diamond and cubic boron nitride, the corrosion resistance of the ceramic valve plate can be made better, avoiding the phenomenon of corrosion damage due to long-term use, increasing the service life of the ceramic valve plate. With glass fiber, ceramic fiber, fiber reinforced composite material and nano-particle reinforcement material, the overall material of the ceramic valve plate can be strengthened, avoiding the phenomenon of internal material differentiation, ensuring the use quality of the ceramic valve plate, and solving the problem that the existing strength is insufficient and it is easy to crack after long-term use, resulting in the service life of the ceramic valve plate not being guaranteed. Detailed implementation manners

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] A preparation process of a high-hardness ceramic valve plate provided by the present invention, and the main components of the high-hardness ceramic valve plate preparation formula are: strength-increasing components, corrosion-resistance-increasing components and strengthening components.

[0022] The present invention is further configured such that the strength-increasing components are composed of alumina, silicon carbide, silicon nitride, zirconia, boron carbide and manufactured sand, the corrosion-resistance-increasing components are composed of tool steel powder, polyamide, nylon, polytetrafluoroethylene, diamond and cubic boron nitride, and the strengthening components are composed of glass fiber, ceramic fiber, fiber reinforced composite material and nano-particle reinforcement material.

[0023] The present invention is further configured such that the content of each component is: 100 parts of alumina, 50 parts of silicon carbide, 65 parts of zirconia, 40 parts of boron carbide, 30 kg / m of manufactured sand 3 、73 parts of tool steel powder, 18 parts of polyamide, 38 parts of nylon, 20 parts of polytetrafluoroethylene, 9 parts of diamond, 50 parts of cubic boron nitride, 70 parts of glass fiber, 50 parts of fiber reinforced composite material, and 56 parts of nano-particle reinforcement material.

[0024] The present invention is further configured to include step a) material preparation; step b) forming treatment; step c) sintering treatment; step d) machining and finishing treatment; step e) surface treatment:

[0025] Step a) Material preparation: Select a suitable ceramic material, then screen and classify it, and mix it into a powder according to a specific ratio;

[0026] Step b) Molding process: Use a molding process to form the powdered material into a green body (also known as a preform) with the required shape and size. The molding methods include injection molding, compression molding, extrusion molding, etc.;

[0027] Step c) Sintering process: Sinter the formed green body at a high temperature. Sintering is to heat the powdered material to near or reach its melting point, causing the particles to bond and form a dense ceramic material. In this process, temperature and time are key parameters that need to be precisely controlled according to the material and requirements;

[0028] Step d) Machining and finishing process: The sintered ceramic body needs to be machined and finished to obtain precise dimensions, shape, and a smooth surface. The processed material is trimmed through processes such as cutting, grinding, and polishing;

[0029] Step e) Surface treatment: According to requirements, surface treatment can be carried out. Surface treatment is performed through processes such as polishing, coating, and plating to improve the smoothness, wear resistance, and corrosion resistance of the valve plate. After the surface treatment is completed, it can be taken out and stored.

[0030] The present invention is further configured such that during the sintering process, the green body needs to be cleaned and then dried.

[0031] The present invention is further configured such that the material preparation is carried out in a dust-free workshop, and the proportion of each material is mixed according to the mixing requirements.

[0032] The present invention is further configured such that after the sintering process, it needs to be cooled to enable the material to be quickly cooled for subsequent handling and use.

[0033] The present invention is further configured such that during the surface treatment, a dust suction mechanism needs to be used for dust suction to prevent excessive impurities from affecting the subsequent treatment progress.

[0034] Working principle and usage process of the present invention: First, the user selects a suitable ceramic material, then screens and differentiates it, and mixes it into a powder according to a specific ratio. Then, a forming process is used to form the powdered material into a green body (also known as a preform) with the required shape and size. The forming methods include injection molding, pressing molding, extrusion molding, etc. Then, the formed green body is sintered at a high temperature. Sintering is to heat the powdered material to near or reach its melting point, causing the particles to bond and form a dense ceramic material. In this process, temperature and time are key parameters that need to be precisely controlled according to the material and requirements. Then, the sintered ceramic blank needs to be processed and trimmed to obtain precise dimensions, shape, and a smooth surface. The processed material is trimmed through processes such as cutting, grinding, and polishing. Then, according to the needs, surface treatment can be carried out. Surface treatment is carried out through processes such as polishing, coating, and plating to improve the smoothness, wear resistance, and corrosion resistance of the valve plate. After the surface treatment is completed, it can be taken out and stored, so as to achieve the effect of increasing strength.

[0035] It should be noted that in this article, 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.

[0036] 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 principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preparation process of a high-hardness ceramic valve plate, characterized in that: The main components of the preparation formula of the high-hardness ceramic valve plate are: components for improving strength, components for improving corrosion resistance, and reinforcement components.

2. The preparation process of a high-hardness ceramic valve plate according to claim 1, characterized in that: The components for improving strength are composed of alumina, silicon carbide, silicon nitride, zirconia, boron carbide, and machine-made sand. The components for improving corrosion resistance are composed of tool steel powder, polyamide, nylon, polytetrafluoroethylene, diamond, and cubic boron nitride. The reinforcement components are composed of glass fiber, ceramic fiber, fiber-reinforced composite material, and nano-particle reinforcement material.

3. The preparation process of a high-hardness ceramic valve plate according to claim 1, characterized in that: The contents of the respective components are as follows: 100 parts of alumina, 50 parts of silicon carbide, 65 parts of zirconia, 40 parts of boron carbide, 30 kg / m of manufactured sand 3 , 73 parts of tool steel powder, 18 parts of polyamide, 38 parts of nylon, 20 parts of polytetrafluoroethylene, 9 parts of diamond, 50 parts of cubic boron nitride, 70 parts of glass fiber, 50 parts of fiber-reinforced composite material, 56 parts of nanoparticle-reinforced material.

4. The preparation process of a high-hardness ceramic valve plate according to claim 1, characterized in that: It includes step a) material preparation; step b) forming treatment; step c) sintering treatment; step d) machining and finishing treatment; step e) surface treatment: Step a) Material preparation: Select suitable ceramic materials, then screen and distinguish them, and mix them into a powder form according to a specific ratio; Step b) Forming treatment: Use a forming process to form the powdered material into a green body (also called a preform) with the required shape and size. The forming methods include injection molding, compression molding, extrusion molding, etc.; Step c) Sintering treatment: Sinter the formed green body at a high temperature. Sintering is to heat the powdered material to near or reach its melting point, causing the particles to bond and form a dense ceramic material. In this process, temperature and time are both key parameters and need to be precisely controlled according to the material and requirements; Step d) Machining and finishing treatment: The sintered ceramic blank needs to be machined and finished to obtain precise dimensions, shape, and a smooth surface. The processed material is trimmed through processes such as cutting, grinding, and polishing; Step e) Surface treatment: According to requirements, surface treatment can be carried out. The surface is treated through processes such as polishing, coating, and film plating, and then the smoothness, wear resistance, and corrosion resistance of the valve plate are improved. After the surface treatment is completed, it can be taken out and stored.

5. The preparation process of a high-hardness ceramic valve plate according to claim 4, characterized in that: During the sintering treatment process, the green body needs to be cleaned, and then dried after cleaning.

6. The preparation process of a high-hardness ceramic valve plate according to claim 4, characterized in that: When preparing the materials, it is all carried out in a dust-free workshop, and the proportion of each material is mixed according to the proportion requirements.

7. The preparation process of a high-hardness ceramic valve plate according to claim 4, characterized in that: After the sintering treatment, it needs to be cooled to enable the material to be quickly cooled for subsequent handling and use.

8. The preparation process of a high-hardness ceramic valve plate according to claim 4, characterized in that: During the surface treatment, a dust suction mechanism needs to be used for dust suction to avoid excessive impurities affecting the subsequent treatment progress.