- 描述
碳化铬堆焊耐磨板: Surface Characteristics of Hardfaced Steel Plate
Chromium carbide overlay wear plate (CCO板) 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
| 材料 | 表面硬度 |
|---|---|
| Chromium carbide overlay layer | HRC 58–65 |
| 耐磨钢 (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
| 成分 | 功能 |
|---|---|
| 碳化铬 (三价铬, Cr23C6) | Main wear-resistant phase |
| Iron-based matrix | Supports carbide structure |
| Alloy additives (C, 锰, 铌, 莫) | 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, 水泥, 沙, 矿石, 和散装物料处理系统.
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
| 层 | Surface Function |
|---|---|
| 覆盖层 | Provides wear resistance |
| Fusion zone | Metallurgical bonding layer |
| 基体钢 | 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
作为专业耐磨钢供应商, Teda Ganghua provides high-quality chromium carbide overlay wear plates with stable surface hardness, uniform carbide distribution, and reliable bonding performance for mining, 水泥, 钢, 和电力行业.
We support customized cutting, 制造, and wear system design based on different industrial conditions.
在这里探索我们的耐磨钢产品:
碳化物覆盖板
结论
The surface of chromium carbide overlay wear plate is defined by ultra-high hardness, carbide-rich microstructure, controlled stress cracks, 和优异的耐磨性. These characteristics make it one of the most effective solutions for severe wear environments.
