What are the disadvantages of iron core PU wheels?

Disadvantages of Iron-Core PU Wheels:

Poor Temperature Adaptability:

High Temperatures (>80-100°C): PU softens and deforms, resulting in reduced dimensional accuracy, poor rolling performance, core debonding, and shortened lifespan, limiting their use in high-temperature workshops and other environments.

Low Temperatures (<-20°C): PU becomes hard and brittle, losing its elasticity and shock-absorbing properties, leading to poor rolling, increased noise, and increased cracking and breakage, limiting their use in cold outdoor environments or cold storage.

Poor High-Speed Performance: At high speeds, PU deforms significantly, accumulating heat, increasing rolling resistance, accelerating wear and aging, and potentially causing vibration imbalances. These wheels are unsuitable for high-speed transmission applications.

High Cost: The complex production process and expensive PU material make manufacturing costs higher than those of ordinary rubber or plastic wheels, increasing procurement costs and hindering market adoption.

Poor Environmental Resistance:

Poor Sharp Object Resistance: Easily scratched by sharp objects such as nails and glass. Deep scratches can cause material shedding, affecting load-bearing capacity and lifespan. Avoid environments with high levels of debris.

Poor Hydrolysis Resistance: Hydrolysis easily occurs in humid or water-immersed environments, resulting in a loss of hardness and strength, significantly shortening the service life outdoors or in humid locations (such as cleaning rooms).

Intolerant to Strong Oxidants: Exposure to strong oxidants such as concentrated sulfuric acid and nitric acid can corrode, causing discoloration, deformation, and embrittlement. Performance and lifespan are drastically reduced, limiting their use in such chemical environments.

Key Points: Iron-core PU wheels exhibit disadvantages such as temperature sensitivity (softening and deformation at high temperatures, brittle cracking at low temperatures), poor high-speed performance, relatively high cost, weak resistance to scratches from sharp objects, insufficient hydrolysis resistance, and resistance to strong oxidant corrosion. These limitations limit their use in environments with extreme temperatures, high speeds, high humidity, strong chemical corrosion, and the presence of sharp objects.