Wear-Resistant Steel Plate Spiral Blades

Wear-resistant steel plate spiral blades are core components of screw conveyors, manufactured from high-strength, wear-resistant steel grades (such as NM400, NM500, HARDOX450, and JFE-EH-C450). They are widely used in industries like mining, building materials, chemicals, agriculture, and environmental protection for conveying highly abrasive materials such as iron ore, quartz sand, and coal. Their main advantages include:

Excellent Wear Resistance: Wear-resistant steels (such as 16Mn, manganese steel, and NM400) possess high hardness (up to HB400-450), significantly extending their service life by 3-5 times compared to ordinary carbon steel blades, thereby reducing replacement frequency and maintenance costs.

High Strength and Impact Resistance: Fabricated from alloy steel or utilizing special heat treatment processes, they offer excellent tensile strength and toughness, making them suitable for heavy loads and high-friction environments.

Customization and Processability: Blade thickness, size, and surface treatment (such as spray-coating or tungsten carbide overlay) can be customized based on material characteristics. High molding precision and minimal pitch error ensure conveying stability. Corrosion and High-Temperature Resistance: Some wear-resistant steels (such as 304 and 316L stainless steels, or high-temperature alloys) are suitable for corrosive or high-temperature environments, enhancing their suitability.

Repair and Wear-Resistant Treatment: Overlay welding with wear-resistant materials (such as Beijing Gubens KB899 welding wire, with a hardness of up to 68 HRC) or carburizing can repair worn blades, improve wear resistance, and extend service life.

Applications:

Mining and Construction: Transporting highly abrasive materials such as sand, gravel, and ore.

Environmental Protection and Chemical: Processing solid waste, corrosive materials, or high-temperature materials.

Agriculture: Mixing and conveying materials such as grain and feed.

Material Options:

Carbon Steel (Q235, Q345): Low cost, suitable for light-load environments.

Alloy Steel (CrMo, 42CrMo): High strength and wear resistance, suitable for heavy-load environments.

Wear-Resistant Steel (NM400, HARDOX500): High hardness, suitable for highly abrasive materials. Stainless steel (304, 316L): Corrosion-resistant and suitable for humid, acidic, and alkaline environments.

Notes:

Material selection should comprehensively consider the operating environment, material properties, processing difficulty, and cost.

Wear-resistant treatment processes (such as cladding) require controlled deformation and cooling rates to ensure performance.