- Penerangan
Plat pakai lapisan karbida kromium: Surface Characteristics of Hardfaced Steel Plate
Chromium carbide overlay wear plate (plat 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.
Berbanding dengan plat keluli biasa, the surface of CCO plates has a completely different microstructure and mechanical behavior.
1. Kekerasan Permukaan Amat Tinggi
| bahan | Kekerasan Permukaan |
|---|---|
| Chromium carbide overlay layer | HRC 58–65 |
| Keluli tahan haus (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
| Komponen | Fungsi |
|---|---|
| Karbida kromium (Cr7C3, Cr23C6) | Main wear-resistant phase |
| Matriks berasaskan besi | Menyokong struktur karbida |
| 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, simen, pasir, bijih, dan sistem pengendalian bahan pukal.
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
| Lapisan | Surface Function |
|---|---|
| Lapisan tindanan | Memberi rintangan haus |
| Fusion zone | Metallurgical bonding layer |
| Keluli asas | 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
Sebagai pembekal keluli tahan haus profesional, Teda Ganghua provides high-quality chromium carbide overlay wear plates with stable surface hardness, uniform carbide distribution, and reliable bonding performance for mining, simen, keluli, dan industri tenaga.
Kami menyokong pemotongan tersuai, rekaan, and wear system design based on different industrial conditions.
Terokai produk keluli tahan haus kami di sini:
Plat overlay karbida kromium
Kesimpulan
The surface of chromium carbide overlay wear plate is defined by ultra-high hardness, carbide-rich microstructure, controlled stress cracks, dan rintangan lelasan yang sangat baik. These characteristics make it one of the most effective solutions for severe wear environments.
