Plaque d'usure de superposition de carbure de chrome
- Description
Plaque d'usure de superposition de carbure de chrome: Surface Characteristics of Hardfaced Steel Plate
Chromium carbide overlay wear plate (Plaque CCO) is a composite steel plate produced by depositing a high-chromium carbide alloy layer onto a carbon steel or low-alloy steel base. Its performance is defined primarily by its surface layer characteristics, which directly determine wear resistance and service life.
Compared with ordinary steel plates, the surface of CCO plates has a completely different microstructure and mechanical behavior.
1. Extremely High Surface Hardness
| Matériel | Dureté superficielle |
|---|---|
| Chromium carbide overlay layer | HRC 58-65 |
| Acier résistant à l'usure (NM400/NM500) | HB 400-500 |
| Ordinary carbon steel | HB 120–200 |
The high hardness comes from large amounts of primary and eutectic chromium carbide particles embedded in the weld matrix.
2. Visible Surface Cracking Pattern (Stress Relief Cracks)
A unique feature of CCO plates is the presence of controlled micro-cracks on the surface.
- These cracks are normal and intentional
- They help release internal welding stress
- They do not affect wear performance
This is a key visual difference from traditional steel plates.
3. Carbide-Rich Microstructure
| Composant | Fonction |
|---|---|
| Carbures de chrome (CR7C3, Cr23C6) | Main wear-resistant phase |
| Iron-based matrix | Supports carbide structure |
| Alloy additives (C, Mn, Nb, Mo) | Improve hardness and stability |
The surface is essentially a “carbide armor layer” designed for extreme abrasion resistance.
4. Excellent Abrasion Resistance Surface
- Strong resistance to sliding abrasion
- High durability against fine particle erosion
- Stable performance in dry wear environments
This makes it ideal for coal, ciment, sable, minerai, et systèmes de manutention de matériaux en vrac.
5. Smooth but Extremely Hard Surface Texture
Although very hard, the surface is relatively smooth due to controlled welding and finishing processes.
- Reduces material sticking
- Improves flow in chutes and hoppers
- Minimizes frictional resistance
6. Bimetallic Surface-Bond Structure
| Couche | Surface Function |
|---|---|
| Couche de superposition | Provides wear resistance |
| Fusion zone | Metallurgical bonding layer |
| Acier de base | Provides toughness and strength |
The surface layer is firmly bonded to the base plate through metallurgical fusion, not mechanical attachment.
7. Teda Ganghua Chromium Carbide Plate Supply Capability
As a professional wear-resistant steel supplier, Teda Ganghua provides high-quality chromium carbide overlay wear plates with stable surface hardness, uniform carbide distribution, and reliable bonding performance for mining, ciment, acier, et industries électriques.
We support customized cutting, fabrication, and wear system design based on different industrial conditions.
Découvrez nos produits en acier résistant à l'usure ici:
Plaque de superposition de carbure de chrome
Conclusion
The surface of chromium carbide overlay wear plate is defined by ultra-high hardness, carbide-rich microstructure, controlled stress cracks, et une excellente résistance à l'abrasion. These characteristics make it one of the most effective solutions for severe wear environments.
