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Selection Criteria and Case Analysis of Wear Parts for Mining Machinery
Wear parts are critical components in mining machinery, directly affecting service life, production efficiency and operating cost. This article summarizes four key selection criteria and shares actual application data of high-performance wear-resistant steel parts.
1. Core Selection Criteria for Wear Parts
1.1 Material Performance
- 27MnTiB wear steel: hardness ≥ 460 HBW, yield strength ≥ 1100 MPa, tensile ≥ 1300 MPa
- NiResET high-toughness steel: impact energy ≥ 41 J at -40°C
- NiRes450: stable hardness ~450 HB, excellent impact and friction resistance
1.2 Process Adaptability
- Laser cutting: precision ±0.1 mm for high-precision parts
- Heat treatment: heating above 910°C, quenching with 4×160 kW nozzles, 80 kN pressure
- Milling edge ensures accurate bevel and good welding performance
1.3 Cost Efficiency
- Long service life reduces replacement and downtime costs
- Intelligent manufacturing lowers production cost and improves price ratio
- Lower maintenance and labor cost in long-term use
1.4 Environmental Performance
- Powder coating: ultra-low VOC emissions
- Scrap recycling: scrap briquettes returned to steelmaking
- Cutting fluid recycled with zero discharge
- 800 kW photovoltaic power station: 1.4 million kWh/year, nearly zero-carbon production
2. Jinrun Intelligent Manufacturing Factory Overview
- World’s first intelligent factory for wear-resistant high-strength steel parts
- Area: 9000 m², annual capacity: 36,000 tons
- Two production lines: flat blade and arc blade, 1500 tons/month each
- 13 authorized patents, 10 patents pending
- 5G + industrial Internet, unmanned intelligent production
3. Application Performance of NiRes450 Wear Parts
| Component | Improvement Index | Effect |
|---|---|---|
| Crusher Liner | Service life +60% | Replacement from 8 times/year to 3 times/year; 200 hours less downtime |
| Conveyor Idler | Wear resistance +80% | Belt deviation -15 times/month; belt life from 6 to 10 months |
| Ball Mill Grinding Body | Grinding efficiency +40%; Consumption -35% | Monthly cost reduced by ~30,000 RMB |
4. Conclusion
- Selection must consider material, process, cost and environmental factors
- NiRes450 series significantly extends service life and improves efficiency
- Intelligent manufacturing ensures stable quality and high cost performance
- High-performance wear parts effectively reduce cost and support green mining
Summary
Scientific selection of wear-resistant parts based on performance, process, cost and environmental standards can greatly improve equipment reliability, reduce downtime and maintenance costs. NiRes450 series parts provide an efficient, economical and eco-friendly solution for modern mining machinery.