Why cast iron are common for the casing and impeller of Roots blower?

Why cast iron are common for the casing and impeller of Roots blower?

1. Low processing difficulty coefficient

Compared with stainless steel and carbon steel, cast iron has relatively low processing difficulty. It can be finely machined with ordinary machine tools with low machining difficulty coefficient.

2. Low overall cost

　　Compared with the cast iron material and stainless steel, the comprehensive cost of the cast iron Roots blower is relatively low

3. Wide market demand

There is a wide demand for cast iron Roots blowers in the market. Generally, companies that deliver clean air will choose cast iron Roots blowers, which are cheap and can fully meet engineering needs.

4. Under what circumstances should stainless steel be used?

The conveying medium contains corrosive components, and the Roots blower is the best choice for delivering medium, hence the stainless steel Roots blower are used. The corrosion resistance of the stainless steel blower is higher than that of the cast iron material