Sealed Valve

What are the advantages of carbide seat

The seat, as a detachable face part of the valve, is used to support the full closing position of the spool and plays an important role in ensuring the sealing effect. And the valve is also a very key control component in the fluid delivery system, generally used to control air, water, steam, all kinds of corrosive media, mud, oil, liquid metal and radioactive media and other types of fluid flow. Therefore, whether the valve seat or valve, the material requirements are also relatively strict, when considering the material will have the following requirements:

1) Fluid compatibility, including expansion, hardness loss, permeability, degradation;

2) hardness;

3) Permanent deformation;

4) Recovery degree after load elimination;

5) tensile strength and compression strength;

6) Deformation before rupture;

7) Elastic modulus.

Usually, rubber, plastic, metal materials and so on are included in the valve seat material range, so why hard alloy materials can be favored? This is because the cemented carbide seat, in hardness, wear resistance, strength, corrosion resistance and other performance are very superior, especially its high hardness and wear resistance, even at 500℃ temperature is basically unchanged, at 1000℃ still has a high hardness. The cemented carbide seat, tungsten carbide, titanium carbide, cobalt powder as the main material, naturally has the performance of cemented carbide, in a long time, can resist corrosion, wear resistance, but also can withstand high pressure, in the application of multiple functionality and flexibility has a unique advantage.

In addition, the cemented carbide seat will reduce wear and tear during a variety of mining and processing processes and can be processed to meet the needs of different product specifications. Hard alloy valve seat, not only high dimensional accuracy, but also wear resistance and corrosion resistance and high pressure resistance, can work for a long time, has excellent bearing capacity for thrust load and high temperature, severe impact resistance and good heat dissipation, can be applied to all kinds of working conditions, such as oil and gas, coal chemical industry, silicon chemical industry and other industries.