FRP negative pressure fan vs metal fan: corrosion resistance, life and product function

1. Corrosion resistance comparison

FRP fan

Using glass fiber reinforced plastic (FRP), it can resist strong acid (such as sulfuric acid, hydrochloric acid), strong alkali (such as sodium hydroxide) and salt spray corrosion, suitable for chemical, electroplating and other highly corrosive environments

The surface is smooth and not easy to accumulate dust, reducing the risk of corrosion caused by chemical adhesion

Metal fan

Galvanized steel plate or stainless steel material, ordinary galvanized plate is easy to rust in a humid environment, 304 stainless steel is corrosion-resistant but the cost is extremely high

Metal welds are prone to corrosion weak points, and anti-corrosion coatings need to be applied regularly

Experimental data: In an acidic environment with pH=2, the FRP fan has no corrosion for 5 years, while the galvanized steel plate fan rusts after 6 months

2. Service life comparison

FRP negative pressure fans are widely used in industry, agriculture and environmental protection due to their corrosion resistance and lightweight advantages. However, if they are not properly maintained, their performance will gradually decline and even shorten their service life.

Regular cleaning of FRP negative pressure fans to prevent dust accumulation and corrosion

Cleaning frequency

Ordinary environment (workshop, warehouse): clean once every 3 months

High dust environment (woodworking, feed factory): clean once a month

High humidity/corrosive environment (chemical plant, farm): check once every 2 weeks and clean when necessary

Cleaning steps

Power-off operation: make sure the fan stops completely before cleaning

Surface dust removal:

Use a soft brush or low-pressure air gun to remove dust from blades and shells

Stubborn stains can be wiped with a neutral detergent (pH 6-8), and strong acid and alkali detergents are prohibited

Drain hole inspection: Make sure the drainage hole at the bottom of the fan is unobstructed to avoid water corrosion

Note: Although FRP is corrosion-resistant, it may still age due to long-term contact with chemicals. Rinse with clean water and wipe dry after cleaning.