Should the Impeller and Casing Be Made of Metal, Rubber, or Ceramic Materials?
The impeller and casing can be made of metal, rubber lining, ceramic, or other validated materials depending on the product structure and the pumped medium. No single material is suitable for all slurry operating conditions.
Metal wet-end parts are typically suitable for operating conditions with larger particles, high impact, elevated temperatures, or sharp particles. However, different metal materials vary in their wear resistance, impact resistance, and corrosion resistance, so selection should not be based solely on material hardness.
Rubber wet-end parts or rubber linings are generally suitable for a certain range of fine-particle abrasive slurries and, depending on the specific rubber compound, can also be used with some corrosive media. During selection, it is crucial to verify temperature, oil content, chemical compatibility, and particle sharpness.
Ceramic materials usually feature high hardness and can be used in highly abrasive, fine-particle applications following technical evaluation. However, if the medium contains large particles, tramp metal, or severe impact, it is necessary to verify whether ceramic materials and the product structure are suitable.
Material selection should be comprehensively evaluated based on abrasion, impact, corrosion, and temperature, rather than placing orders solely under the generic description of "wear-resistant material."
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