Spiral Blade Material Selection Guide: A Comprehensive Consideration from Operating Conditions to Cost

Selecting the appropriate blade material for a screw conveyor is a systematic process that requires comprehensive consideration of multiple factors. The primary factor is the material characteristics, including abrasiveness, corrosiveness, adhesion, and temperature. Secondly, operating conditions need to be considered: continuous or intermittent operation, environmental humidity, and acidity/alkalinity. Finally, cost is a decisive factor, including not only the initial purchase cost but also the total life cycle cost, such as maintenance frequency, downtime losses, and energy consumption. For example, galvanized carbon steel can be selected for conveying grain, high manganese steel or wear-resistant steel should be selected for conveying slag, and stainless steel or plastic is required for conveying chemicals. Scientific material selection is the key to achieving efficient, economical, and long-lasting operation.