Metallic Materials
Stainless Steel: For example, 316 stainless steel has excellent high-temperature resistance. It can maintain good strength and corrosion resistance at relatively high temperatures. It is suitable for transporting high-temperature fluids with certain corrosiveness and is widely used in industries such as food, pharmaceuticals, and chemical engineering. 304 stainless steel can also withstand high temperatures to some extent, but its corrosion resistance is slightly inferior to that of 316 stainless steel.
Nickel-based Alloys: Alloys such as Inconel and Hastelloy have outstanding high-temperature resistance, corrosion resistance, and antioxidant properties. They can work stably in extremely high-temperature environments and are often used in fields with extremely high material requirements, such as aerospace and petrochemical industries. However, their costs are relatively high.
Titanium Alloys: Titanium alloys have the advantages of high strength, low density, high-temperature resistance, and corrosion resistance. They perform excellently in situations where there are requirements for high temperature, high pressure, and material weight, such as in applications in aircraft engines and deep-sea diving equipment. However, they are relatively expensive.
Ceramic Materials
Alumina Ceramics: It has a high melting point and can remain stable at high temperatures. It has good wear resistance, corrosion resistance, and electrical insulation properties. It is suitable for transporting high-temperature, high-wear, and corrosive media, such as in liquid injection pumps in industries like metallurgy and glass manufacturing.
Silicon Nitride Ceramics: Its thermal shock resistance is better than that of alumina ceramics, and its other properties are basically the same as those of alumina ceramics. It can be used as a high-temperature structural material for mechanical seals of pumps, pump shafts of magnetic pumps, and so on.
Silicon Carbide Ceramics: It has excellent chemical corrosion resistance, relatively high mechanical strength, good wear resistance, high-temperature resistance, good self-lubricating properties, and a small friction coefficient. It can be used to manufacture pump head components in high-temperature and highly corrosive environments.
Rubber and Polymer Materials
Fluorine Rubber: It has excellent high-temperature resistance, oil resistance, and corrosion resistance. It can work in high-temperature and harsh chemical environments for a long time. It is suitable for transporting high-temperature corrosive liquids or gases and is often used in components such as pump head seals and diaphragms in industries such as chemical engineering and petroleum.
Silicone Rubber: It has good high-temperature resistance and aging resistance. It is suitable for transporting high-temperature media and also has good elasticity and flexibility. It can be used to manufacture pump head seals and shock-absorbing components, etc.
Polytetrafluoroethylene: It has extremely excellent corrosion resistance and certain high-temperature resistance. It can be used under the conditions of -250 °C to +260 °C. It can withstand the erosion of almost all acids, bases, and solvents. It is often used for transporting various corrosive media. However, it has disadvantages such as a large coefficient of linear expansion and poor dimensional stability.
Composite Materials
Metal Matrix Composites: For example, carbon fiber-reinforced metal matrix composites combine the high strength and high modulus of carbon fibers with the good electrical conductivity and thermal conductivity of metals. They have relatively high high-temperature resistance and specific strength and can be used to manufacture high-performance pump head components.
Ceramic Matrix Composites: With ceramics as the matrix and adding reinforcing phases such as fibers and particles, the toughness and thermal shock resistance of ceramics can be improved while retaining the high-temperature stability and corrosion resistance of ceramics. They are suitable for pump head applications in extremely high-temperature and harsh environments.
When selecting materials for the RP1 pump head suitable for high-temperature environments, factors such as material cost, processing difficulty, compatibility with the transported medium, and sealing performance also need to be considered. Meanwhile, according to specific usage requirements and working conditions, special designs and surface treatments can also be carried out on the pump head to improve its high-temperature resistance and service life.
