Placa de desgaste CCO
CCO Wear Plate is a composite wear-resistant material combining a tough steel base with a high-chromium carbide overlay layer. Its unique composition provides exceptional hardness, excelente resistencia a la abrasión, and strong impact support, making it an ideal solution for high-wear industrial environments where durability and service life are critical.
- Descripción
Placa de desgaste CCO (Placa de desgaste superpuesta de carburo de cromo) is a type of bimetallic wear-resistant steel plate produced by depositing a high-hardness chromium carbide alloy layer onto a mild steel or low-carbon steel base plate through a welding or overlay process. It is widely used in heavy wear environments such as mining, producción de cemento, plantas de energía, y sistemas de manipulación de materiales.
Main Structure of CCO Wear Plate
CCO wear plate consists of two key layers:
- Placa base (Backing Steel): Provides structural strength and toughness
- Capa de revestimiento duro (Cubrir): Provides wear resistance through high chromium carbide content
Chemical Composition of Overlay Layer
The wear-resistant surface layer is typically an iron-based alloy enriched with chromium and carbon.
| Elemento | Contenido típico (%) | Función |
|---|---|---|
| Cromo (cr) | 20–35 | Forms hard chromium carbides for wear resistance |
| Carbón (do) | 3–5 | Combines with chromium to form hard phases |
| Hierro (fe) | Balance | Matrix structure |
| Manganeso (Minnesota) | pequeña cantidad | Mejora la dureza |
| Silicio (Y) | pequeña cantidad | Improves weldability |
The combination of chromium and carbon forms extremely hard carbides (such as Cr7C3 and Cr23C6), which are the key to abrasion resistance.
Base Metal Composition
| Elemento | Contenido (%) |
| Carbón (do) | ≤0,25 |
| Manganeso (Minnesota) | 0.5–1,5 |
| Silicio (Y) | ≤0,5 |
| Hierro (fe) | Balance |
The base plate ensures good toughness and impact resistance while supporting the hard overlay layer.
Mechanical and Wear Properties
Capa superficial de alta dureza
The overlay hardness typically ranges from:
- 55–65 HRC (Dureza Rockwell)
- Equivalent to extremely high wear resistance compared with standard steel
Excelente resistencia a la abrasión
CCO wear plates are designed to resist:
- Abrasión deslizante
- Abrasión por impacto
- Erosión de partículas
- Material flow wear
Strong Impact Support
The base steel provides toughness, allowing the material to absorb mechanical shock without cracking.
Good Bonding Strength
Metallurgical bonding between overlay and base plate ensures:
- No delamination under normal working conditions
- Stable performance under heavy load
- Larga vida útil en entornos hostiles
Mecanismo de resistencia al desgaste
The performance of CCO wear plate is mainly achieved through:
- Formation of hard chromium carbide particles
- Distribución uniforme de fases resistentes al desgaste.
- Hard surface resisting cutting and grinding action
- Tough base layer absorbing impact energy
Comparación de rendimiento
| Propiedad | Placa de desgaste CCO | Acero dulce | Hardox-Type Steel |
| Dureza | muy alto | Bajo | Alto |
| Resistencia a la abrasión | Excelente | Pobre | Bien |
| Resistencia al impacto | Medio-alto | Alto | Alto |
| Vida útil | Very Long | Corto | Largo |
Aplicaciones típicas
CCO wear plates are widely used in industries with severe wear conditions:
- Revestimientos para equipos de minería
- Tolvas y tolvas para plantas de cemento
- Sistemas de manipulación de carbón
- Sistemas de cenizas para centrales eléctricas.
- Steel plant conveyors
- Cucharones de excavadora y camiones volquete
- Crusher liners and screens
- Sistemas de transferencia de material a granel
