“Valve” is an indispensable device for controlling the direction, pressure, and flow of fluid in various engineering fields.
The basic functions of valves are: to cut off and connect the medium, adjust the flow, and change the flow direction. Valves mainly control and regulate the medium being transported in pipeline transportation.
The use of metal valves has a history of hundreds of years. Although the structure and materials have been improved during this period, they are increasingly unable to adapt to the needs of severe working conditions such as high wear and strong corrosion in special environments due to the limitations of the metal materials themselves. The short service life and poor sealing cause frequent leakage, which to a certain extent affect the stability of the system operation.
With the rapid development of the chemical industry, various special projects such as strong corrosion, high temperature and high pressure, and high toxicity are increasing, which puts higher requirements on valves, the most commonly used components in chemical pipelines. New ceramic valves with excellent strength, hardness, insulation, heat conduction, high-temperature resistance, oxidation resistance, abrasion resistance, wear resistance, high-temperature strength, and other characteristics have emerged under very harsh environments or engineering application conditions, showing high stability and excellent mechanical properties.
Advantages and characteristics of new ceramic valves
Long service life. Compared with valves made of other materials, ceramic valves have shown an extremely long effective service life under high temperature and high-pressure working environments, which not only guarantees the normal operation of the chemical transportation industry to a certain extent but also reduces the cost of chemical production and improves the working efficiency of valves.
Wide range of applications. Ceramic valves apply to a wide range of applications, such as power generation, chemical industry, metallurgy, and mining, in addition to industrial fields such as sewage treatment.
Mature preparation process. With the continuous innovation and development of science and technology, the preparation process and process of ceramics have become more mature and perfect. For example, important process links such as ceramic product ingredient ratio, ceramic processing, and molding have become more mature through the application of new technologies.
Wide source of raw materials. The source of raw materials for the preparation of ceramic valves is relatively wide. Raw materials containing elements such as aluminum and silicon can be used to prepare ceramics after processing.
Superior performance. Ceramic valves are superior to other types of valves in terms of high-temperature resistance, wear resistance, and corrosion resistance. In addition, they also have good airtightness and thermal conductivity.
Low manufacturing cost. Since the raw materials for preparing ceramics are relatively common, a large amount of rare metal resources are saved. In addition, the application of ceramic valves can effectively reduce the labor intensity of workers, and the system runs relatively smoothly. The maintenance of the entire system and the replacement of valves are relatively low, which effectively saves the cost of use.
The hardness of the sealing surface and the part in contact with the fluid of the ceramic valve is very high (Rockwell HRA ≥ 88 or above), which is equivalent to Rockwell HRC ≥ 70 or above. The performance of the ceramic valve is stable, and the ceramic parts have excellent self-lubrication, so the ceramic valve has a small torque and is easy to control remotely.
Edgetech can provide a variety of advanced ceramic precision machined parts such as tubes, washers, insulators, rods, flanges, and other high-strength ceramic parts to meet customers’ customized requirements.