Hard carbides resist abrasive cutting and slurry erosion in pump wet ends, low- to moderate-impact liners, coal mill and grinding parts, and media. Assess locations exposed to large-lump impact, bending or tramp metal carefully.
High-chromium white iron combines carbides with a controlled matrix for abrasion and erosion resistance. Carbide morphology and volume, matrix structure, section size and heat treatment determine performance. "Cr26" or "high chromium" alone cannot predict equal life in different parts.
The parts below use high-chromium white iron for wear resistance. Shafts, gears and load-bearing housings require separate structural material specifications.
Compare metal and rubber wet ends using particle characteristics, flow, head, speed, slurry concentration, pH and chlorides.
Do not apply directly to head-on drop impact zones. Assess drop height, impact angle, backing support and hole-edge stresses.
High-impact SAG/AG shell liners should not be changed to high-chromium white iron solely to increase abrasion resistance.
| Part / Position | Main Wear Mechanisms | Required Material Properties | Pre-manufacturing Checks |
|---|---|---|---|
| Slurry Pump Impellers | High-velocity slurry erosion, localized blade inlet wear and cavitation risk. | Erosion resistance, hardness and hydraulic profile retention; sound blade-to-hub transitions. | Pump type, impeller diameter, speed, particles, slurry concentration and corrosive medium. |
| Volute Liners, Front and Rear Liners, and Throatbushes | Abrasive cutting, erosion, enlarged clearances and localized perforation. | Wear resistance, stable thick-section microstructure and consistent mounting dimensions. | OEM model, drawing number, mating impeller, clearances, flow, head and wear map. |
| Chute and Hopper Side Liners | Low-angle sliding wear, directional erosion and joint erosion. | Resist abrasive cutting; use segmentation and backing support to reduce fracture risk. | Drop height, impact angle, liner dimensions, supports, bolt holes and joint orientation. |
| Coal Mill Rolls, Grinding Rings and Table Liners | High-stress fine-particle abrasion, rolling pressure and temperature rise. | Carbide wear resistance, matrix support and consistency from surface through section. | Mill model, roller pressure, feed material, temperature, repair method and current material. |
| Grinding Balls / Media | Combined rolling, impact, abrasion and corrosion. | Hardness gradient, spalling and breakage resistance, and batch consistency. | Mill type and diameter, ball size, ball charge, slurry chemistry and make-up practice. |
ASTM A532/A532M covers abrasion-resistant white cast iron for mining, milling and material handling, including chemistry, heat treatment condition and hardness. Add part-specific microstructure, defect and dimensional requirements to the delivery specification.
Confirm the ASTM class/type or other grade from the drawing or technical agreement. Check Cr/C ratio, Mo/Ni/Cu alloying and heat traceability.
Control carbide morphology, matrix structure, retained austenite and thick-section cooling. Record the heat treatment condition in addition to surface hardness.
Focus on blade roots, hole edges, corners and section transitions. Select visual, dimensional, MT/PT/UT or leak checks according to risks and applicability.
Check impeller, volute liner, throatbush and clearances on pump parts. Check liner backing contact, fasteners and joints to prevent assembly-stress cracking.
Use part pages for OEM drawing references, part numbers, models and dimensions. Material options require assessment against operating conditions.
Alternative Materials: Compare wear-resistant or tough alloy steel for coarse sharp particles and stronger impact, rubber or polyurethane for fine particles, corrosion or noise reduction, and ceramic or composite liners for severe sliding wear with adequate support. Material performance depends on the application.
Material References: ASTM A532/A532M Abrasion-resistant Cast Iron Specification; Metso X Series Slurry Pump Materials. Use references to identify material families and applications; specify the grade from drawings and operating conditions.
Provide the equipment model, OEM drawing number or drawing, flow and head, particles, concentration, pH and chlorides, current material, wear photographs, quantity and target service life.
ANRANST provides customers worldwide with coordinated consulting, supplier sourcing, quality control and finished-part delivery for custom parts, wear parts and industrial spares from China, with scope to support other custom industrial parts.
Equipment and part identification, drawing review, material selection and manufacturing feasibility assessment.
Match requirements with suitable manufacturers in China and coordinate the exchange of technical information.
Drawing confirmation, material and process control, production tracking, inspection and acceptance coordination.
Coordinate manufacturing, quality confirmation, packaging and delivery of complete finished parts.
Provide the existing model, drawings, drawing or part numbers, materials or operating conditions so we can identify the appropriate technical review and supply route.
Submit an Enquiry