What are the advantages and disadvantages of cast iron fans compared to fans made from welded steel plates?
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What are the advantages and disadvantages of cast-iron casing fans compared to fans with steel plate welded casings? Why does API673 require welded steel enclosures?
Now, the casings of fans are made by welding steel plates, resulting in a light weight.
Why do some manufacturers say that welded steel casing is no longer used, and cast ones are employed instead?
Advantages of cast iron housing: good shock absorption and low noise level； Good thermal conductivity, facilitating heat dissipation ； Corrosion-resistant and not prone to oxidation. Advantages of welded shells: no casting defects, less likelihood of defective products ； Short cycle time, no waiting time required ； Light weight and low cost.
It would be better to use a cast shell. Molded, with high stability. Moreover, the flow channel is more natural and better-fitting. The welded casing is lightweight and inexpensive. But what is commonly seen are mainly welded parts.