High-performance cast steel valve

Abstract

This utility model relates to the field of cast steel valve technology and discloses a high-performance cast steel valve component, including a cast steel valve body. This utility model involves applying a nitride coating to the inner wall of the cast steel valve body. Nitriding is a process where nitrogen atoms are penetrated into the steel surface at high temperatures to form a nitride layer, such as iron nitride or chromium nitride. This coating significantly improves the surface hardness, wear resistance, and fatigue resistance of the cast steel component, making it particularly suitable for parts that are frequently subjected to wear in working environments. A polytetrafluoroethylene (PTFE) coating is applied to the end of the nitride coating away from the cast steel valve body. PTFE coatings, with their excellent chemical resistance, high temperature resistance, low friction, anti-adhesion, and electrical insulation properties, can improve equipment performance, reduce maintenance costs, and extend the service life of the cast steel valve body. Finally, a nickel coating is applied to the surface of the cast steel valve body, which offers high hardness, wear resistance, corrosion resistance, and high temperature resistance.

Description

Technical Field

[0001] This utility model relates to the field of cast steel valve technology, and in particular to a high-performance cast steel valve component. Background Technology

[0002] High-performance cast steel parts for valves typically refer to cast steel components used in the manufacture of valves. These components need to possess properties such as high temperature resistance, corrosion resistance, and high strength to meet the various harsh working environments in industry. To meet these requirements, high-performance materials such as alloy steel, stainless steel, heat-resistant steel, and wear-resistant alloys are usually used and produced through precision casting technology to ensure the reliability and long service life of valves under harsh working conditions.

[0003] In the existing technology, cast steel valves are often single cast steel products that are molded in one piece. After the cast steel products are cooled and formed, their surfaces are prone to pores and cracks, which leads to poor performance and lacks good crack resistance, corrosion resistance, wear resistance and fouling resistance. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a high-performance cast steel part for valves.

[0005] This utility model is achieved by the following technical solution: a high-performance cast steel valve part, including a cast steel valve body, wherein valve body performance components are provided on the surface of the cast steel valve body, and a sealing gasket is provided in contact with the inner wall of the cast steel valve body.

[0006] The valve body performance components include a nitride coating applied to the inner wall of the cast steel valve body, a polytetrafluoroethylene coating applied to the surface of the nitride coating, and a nickel coating applied to the surface of the cast steel valve body.

[0007] The above technical solution involves applying a nitride coating to the inner wall of the cast steel valve body. Nitriding is a process where nitrogen atoms are penetrated into the steel surface at high temperatures to form a nitride layer (such as iron nitride or chromium nitride). This coating can significantly improve the surface hardness, wear resistance, and fatigue resistance of cast steel parts, making it particularly suitable for components that are frequently subjected to wear in working environments.

[0008] As a further improvement to the above solution, two sealing gaskets are provided, and the two sealing gaskets are arranged symmetrically around the center of the cast steel valve body.

[0009] As a further improvement to the above solution, the cast steel valve body has a liquid inlet on the left side and a threaded pre-installation hole on the left side.

[0010] As a further improvement to the above solution, a plurality of threaded pre-installation holes are provided, and the plurality of threaded pre-installation holes are evenly arranged around the sealing gasket.

[0011] As a further improvement to the above solution, a liquid outlet is provided on the right side of the cast steel valve body, and a threaded pre-installation hole is provided on the right side of the cast steel valve body.

[0012] As a further improvement to the above solution, several threaded pre-installation holes are provided, and these several threaded pre-installation holes are evenly arranged around symmetrically arranged sealing gaskets.

[0013] As a further improvement to the above solution, a valve stem is provided on the inner wall of the cast steel valve body.

[0014] By employing the aforementioned technical solutions and placing sealing gaskets inside the cast steel valve body, the valve's sealing performance can be improved, leakage reduced, service life extended, corrosion resistance and high-temperature resistance enhanced, while also facilitating installation and maintenance, and increasing the reliability and stability of the equipment.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention involves applying a nitride coating to the inner wall of a cast steel valve body. Nitriding is a process where nitrogen atoms are penetrated into the steel surface at high temperatures to form a nitride layer, such as iron nitride or chromium nitride. This coating significantly improves the surface hardness, wear resistance, and fatigue resistance of the cast steel parts, making it particularly suitable for components that are frequently subjected to wear in working environments. Furthermore, applying a polytetrafluoroethylene (PTFE) coating to the end of the nitride coating away from the cast steel valve body enhances the performance of the equipment, reduces maintenance costs, and extends the service life of the cast steel valve body. Additionally, applying a nickel coating to the surface of the cast steel valve body provides high hardness, wear resistance, corrosion resistance, and high temperature resistance. By combining these two methods, the mechanical properties and service life of the material can be significantly improved, enhancing the overall performance of the product.

[0017] This invention improves valve sealing, reduces leakage, extends service life, and enhances corrosion resistance and high-temperature resistance by placing a sealing gasket inside the cast steel valve body. It also facilitates installation and maintenance, increasing the reliability and stability of the equipment. Furthermore, the pre-installed threaded holes and threaded pre-installed hole II on the surface of the cast steel valve body facilitate the connection between the pipeline and the cast steel valve body. 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 valve body performance component structure of this utility model;

[0020] Figure 3This is a schematic diagram of the liquid inlet structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the liquid outlet structure of this utility model.

[0022] Explanation of key symbols:

[0023] 1. Cast steel valve body; 2. Valve body performance components; 201. Nitride coating; 202. PTFE coating; 203. Nickel coating; 3. Sealing gasket; 4. Inlet; 5. Threaded pre-installed hole; 6. Outlet; 7. Threaded pre-installed hole two; 8. Valve stem. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Example:

[0026] Please combine Figure 1-4 This embodiment provides a high-performance cast steel valve component, including a cast steel valve body 1, a valve body performance component 2 disposed on the surface of the cast steel valve body 1, and a sealing gasket 3 disposed in contact with the inner wall of the cast steel valve body 1.

[0027] The valve body performance component 2 includes a nitride coating 201, which is applied to the inner wall of the cast steel valve body 1. The surface of the nitride coating 201 is coated with a polytetrafluoroethylene coating 202, and the surface of the cast steel valve body 1 is coated with a nickel coating 203.

[0028] There are two sealing gaskets 3, which are symmetrically arranged around the center of the cast steel valve body 1.

[0029] The cast steel valve body 1 has an inlet 4 on the left side and a threaded pre-installation hole 5 on the left side.

[0030] Several threaded pre-installation holes 5 are provided, and the several threaded pre-installation holes 5 are evenly arranged with the sealing gasket 3 as the center.

[0031] The cast steel valve body 1 has a liquid outlet 6 on the right side and a threaded pre-installation hole 7 on the right side.

[0032] Several threaded pre-installation holes 7 are provided, and these several threaded pre-installation holes 7 are evenly arranged around the symmetrically arranged sealing gaskets 3.

[0033] A valve stem 8 is provided on the inner wall of the cast steel valve body 1.

[0034] The implementation principle of a high-performance cast steel valve component in this application embodiment is as follows: A nitride coating 201 is applied to the inner wall of the cast steel valve body 1. Nitriding is a process where nitrogen atoms are penetrated into the steel surface at high temperature to form a nitride layer (such as iron nitride or chromium nitride). This coating significantly improves the surface hardness, wear resistance, and fatigue resistance of the cast steel component, making it particularly suitable for parts that are frequently subjected to wear in working environments. Then, a polytetrafluoroethylene (PTFE) coating 202 is applied to the end of the nitride coating 201 away from the cast steel valve body 1. The PTFE coating 202, with its excellent chemical resistance, high temperature resistance, low friction, anti-adhesion, and electrical insulation properties, can improve equipment performance, reduce maintenance costs, and extend the service life of the cast steel valve body 1. By applying a nickel coating 203 to the surface of the cast steel valve body 1, which possesses properties such as high hardness, wear resistance, corrosion resistance, and high temperature resistance, and then applying a nitride coating to the surface of the cast steel valve body 1, the mechanical properties and service life of the material can be significantly improved, enhancing the overall performance of the product. Furthermore, by placing a sealing gasket 3 inside the cast steel valve body 1, the valve's sealing performance can be improved, leakage reduced, service life extended, corrosion resistance and high temperature resistance enhanced, while also facilitating installation and maintenance, increasing the reliability and stability of the equipment. Finally, the threaded pre-installation holes 5 and 7 on the surface of the cast steel valve body 1 facilitate the connection of pipelines to the cast steel valve body 1.

[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A high-performance cast steel valve component, characterized in that, It includes a cast steel valve body (1), the surface of which is provided with a valve body performance component (2), and a sealing gasket (3) is provided in contact with the inner wall of the cast steel valve body (1); The valve body performance component (2) includes a nitride coating (201) applied to the inner wall of the cast steel valve body (1), a polytetrafluoroethylene coating (202) applied to the surface of the nitride coating (201), and a nickel coating (203) applied to the surface of the cast steel valve body (1).

2. The high-performance cast steel valve component as described in claim 1, characterized in that: There are two sealing gaskets (3), which are arranged symmetrically around the center of the cast steel valve body (1).

3. The high-performance cast steel valve component as described in claim 1, characterized in that: The cast steel valve body (1) has an inlet (4) on the left side and a threaded pre-installation hole (5) on the left side.

4. A high-performance cast steel valve component as described in claim 3, characterized in that: The threaded pre-installation hole (5) is provided in a plurality of manners, and the plurality of threaded pre-installation holes (5) are evenly arranged around the sealing gasket (3).

5. A high-performance cast steel valve component as described in claim 1, characterized in that: The cast steel valve body (1) has a liquid outlet (6) on the right side and a threaded pre-installation hole (7) on the right side.

6. A high-performance cast steel valve component as described in claim 5, characterized in that: The threaded pre-installation hole 2 (7) is provided in several places, and the several threaded pre-installation holes 2 (7) are evenly arranged with the symmetrically arranged sealing gasket (3) as the center.

7. A high-performance cast steel valve component as described in claim 1, characterized in that: The inner wall of the cast steel valve body (1) is provided with a valve stem (8).

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