Wan kun fan science popularization - The advantages and disadvantages of common materials for centrifugal fans
Centrifugal fans are commonly used equipment in industry, and the choice of materials has an important influence on the performance and service life of the fans. The following are common centrifugal fan materials and their characteristics and advantages and disadvantages.
I. Carbon steel
Characteristics: Carbon steel is a ferrocarbon alloy steel with a small amount of carbon, which is the most common metal material with good strength and wear resistance. Easy to process and cheap.
Advantages: It is suitable for centrifugal fans at most medium temperatures and without dust and corrosion.
Disadvantage: In some cases where the requirements for high temperature, wear resistance and corrosion resistance are high, carbon steel centrifugal fans are not suitable.
II. Glass steel (FRP)
Features: Fiberglass has excellent corrosion resistance and is resistant to corrosion of various acids and alkalis.
Advantages: A fairly large number of gas treatments in the chemical industry will use glass-steel centrifugal fans.
Disadvantages: Compared with other materials, the high temperature resistance is poor, and its strength may be slightly lower.
III. Stainless steel
Features: Stainless steel includes more than 100 specific grades of a category, mainly martensitic, austenitic, ferritic, duplex stainless steel and other categories, with excellent corrosion resistance and high temperature resistance.
Pros: Corrosion resistant and suitable for various concentrations of acid, alkaline, salt mist and other environments. High temperature resistance and stable operation in high temperature environments. The aesthetics are easy to maintain, the surface is smooth, it is not easy to accumulate dust, and it is easy to clean and maintain.
Disadvantage: The stainless steel material itself and its processing process are relatively expensive, so the price of this type of wind turbine is higher.
IV. Polypropylene (PP)
Features: Polypropylene is a thermoplastic synthetic resin with excellent performance,It is a colorless, translucent, light, general purpose thermoplastic with chemical resistance, heat resistance (but poor resistance to heating, usually between minus 5 °C to 70 °C), high electrical insulation, high intensity, mechanical properties and good high wear resistance processing properties.
Advantages: Resistant to acid-base corrosion and stable to acid, alkali, concentrated acid and other chemical reagents. The cost is low, the cost of materials is relatively low and the manufacturing process is simple, so the overall price is cheaper.
Disadvantage: It is not resistant to high temperature, and it is easy to age in a high temperature environment. It has a low hardness and is not suitable for situations under high mechanical pressure. The aging resistance is general and the service life is relatively short.
V. Titanium alloys
Features: Titanium alloy is a very lightweight and extremely lightweight material with excellent corrosion resistance and high temperature stability.
Pros: lightweight, high strength. Used in situations where the weight and strength requirements are extremely high. It is resistant to corrosion and high temperatures and can operate steadily in extreme environments.
Cons: Expensive and difficult to process.
In summary, centrifugal fans of different materials have advantages and disadvantages, and the choice should be comprehensively considered according to the specific use environment, performance requirements and economy.