HPGR Wear Resistant Tungsten Carbide Stud Pins
- Extreme hardness HRA 85–90.5 — exceptional wear resistance for demanding HPGR applications
- High transverse rupture strength (TRS) up to 3,300 N/mm² withstands high-impact crushing forces
- Density 13.5–15.0 g/cm³ for excellent mass and stability
- 100% virgin tungsten carbide raw materials for superior consistency and performance
- HIP sintering ensures uniform microstructure, high density, and exceptional toughness
- Service life: 8,000–10,000 hours for iron ore crushing, 25,000+ hours for cement crushing
- Domed and flat-top head designs available
- Outer diameter 10–22mm, height 35–70mm
Description Of HPGR Wear Resistant Tungsten Carbide stud Pins
HPGR Wear Resistant Tungsten Carbide Stud Pins are high-performance cylindrical wear elements manufactured from tungsten carbide (WC) with a metallic cobalt binder through advanced powder metallurgy and HIP (Hot Isostatic Pressing) sintering processes. These studs are the core wear-resistant components of High Pressure Grinding Rolls (HPGR), mounted on the surface of two counter-rotating rollers to crush hard materials including rocks, ores, cement, and coal.
HPGR is an energy-efficient crushing technology widely used in grinding cement clinker, limestone, bauxite, and iron ore. The carbide stud pin serves as the core component that provides high wear resistance and high compressive strength. The studs are inserted into the roller surface in a specific pattern, with the stud head protruding from the roller surface. During operation, the studs protect the roller body from direct wear and impact by absorbing the abrasion, significantly extending the service life of the HPGR equipment.
HPGR wear resistant tungsten carbide stud pins are manufactured from 100% virgin raw materials, with high density (13.5–15.0 g/cm³), extreme hardness (HRA 85–90.5), and high transverse rupture strength (TRS up to 3,300 N/mm²). These properties enable the studs to withstand the severe impact and abrasive forces generated during high-pressure grinding operations.
Applications Of HPGR Wear Resistant Tungsten Carbide stud Pins
Iron Ore Processing: HPGR wear resistant tungsten carbide stud pins are widely used in iron ore comminution and pelletizing processes. Service life typically reaches 8,000–10,000 hours in iron ore crushing applications.
Cement Industry: HPGR carbide studs are extensively used in cement production for grinding cement clinker and raw meal. Service life exceeds 25,000 hours in cement crushing applications. Suitable grades include BTD15, BTD18, BTD20.
Limestone and Bauxite Crushing: Tungsten carbide stud pins are used for grinding limestone and bauxite in the cement and aluminum industries. Ultra-fine grain grades are recommended for highly abrasive bauxite and hard minerals.
Mining and Mineral Processing: HPGR carbide studs are used in various mining operations for crushing ores and rocks. They are particularly effective as pre-grinding equipment before ball mills or forming complex grinding systems.
Pelletizing Plants: Tungsten carbide stud pins are used in pelletizing plants for processing iron ore fines and increasing specific surface area.
Hard Rock Crushing: HPGR carbide studs are suitable for hard rock crushing operations where high wear resistance and impact toughness are required.
Usage Precautions and Limitations Of HPGR Wear Resistant Tungsten Carbide Stud Pins
Grade Selection: Select the appropriate grade based on the material being crushed and operating conditions:
For high wear resistance in limestone and cement raw meal (low abrasion), choose grades like YG11.
For balanced toughness and wear resistance in iron ore and gold ore (medium impact), choose grades like YG13.
For maximum impact resistance in heavy-impact sites with oversized rocks and tramp metal, choose high-toughness grades like YG15 or BTD15.
For highly abrasive bauxite and hard minerals, choose ultra-fine grain grades for premium abrasion resistance.
Head Design Selection: Choose domed heads for standard applications requiring optimal impact distribution. Choose flat-top heads for specific application requirements.
Installation: Tungsten carbide stud pins must be properly installed into the roller surface holes. The studs are inserted with the head protruding from the roller surface in a specific pattern. Incorrect installation can lead to premature loss or breakage.
Handling and Storage: Tungsten carbide stud pins are hard but brittle. Handle with care to avoid chipping or cracking. Store in a dry, clean environment to prevent contamination.
Regular Inspection: Regular inspection of tungsten carbide stud pins is recommended to monitor wear patterns and identify when replacement is needed. Worn studs should be replaced promptly to maintain crushing efficiency and prevent damage to the roller body.
Compatibility Verification: Before ordering, verify that the diameter, height, head design, and grade are compatible with your specific HPGR equipment and application requirements.
Quality Assurance: Ensure that the supplier provides material certification including chemical composition, hardness, density, TRS values, dimensional inspection reports, and compliance with relevant standards (ISO 9001:2008).
Specifications Of HPGR Wear Resistant Tungsten Carbide Stud Pins