Slurry pump impeller material selection needs to be based on specific conditions and media characteristics to decide, common materials and selection points are as follows:
1. high chromium cast iron (Cr15, Cr27)
Features: high hardness, good wear resistance, suitable for conveying strong abrasive slurry.
Application: commonly used in mining, metallurgy and other fields of slurry transportation.
2. Goma
Features: good elasticity, corrosion resistance, suitable for conveying corrosive media containing particles.
Application: chemical industry, environmental protection and other fields, especially suitable for more corrosive conditions.
3. polyurethane
Features: excellent abrasion resistance and elasticity, suitable for conveying slurry containing fine particles.
Application: suitable for smaller particles, less abrasive working conditions.
4. stainless steel (such as 304, 316)
Characteristics: strong corrosion resistance, suitable for conveying corrosive media.
Application: chemical, food and other industries, especially the more corrosive occasions.
5. Duplex stainless steel
Features: both high strength and corrosion resistance, suitable for high corrosion, high wear conditions.
Applications: seawater treatment, chemical and other highly corrosive areas.
6. ceramic
Features: high hardness, excellent wear resistance and corrosion resistance, but brittle.
Application: suitable for highly abrasive and corrosive working conditions.
Selection points:
Media characteristics: according to the abrasive slurry, corrosive and particle size to choose the right material.
Working conditions: consider the temperature, pressure, flow rate and other conditions on the material.
Economy: under the premise of meeting the performance requirements, choose the cost-effective material.
Service life: according to the working conditions, choose the material with better wear resistance and corrosion resistance to prolong the life of the impeller.
Summarize:
High chrome cast iron: suitable for highly abrasive working conditions.
Rubber / polyurethane: suitable for corrosive media.
Stainless steel / duplex stainless steel: suitable for corrosive conditions.
Ceramic: suitable for highly abrasive and corrosive conditions.
According to the specific conditions and media characteristics to choose the right impeller material, can enhance the efficiency and life of the pump.
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