- Keterangan
Pelat overlay kromium karbida: Differences Between Hardfaced Plates and Other Wear-Resistant Steels
Chromium carbide overlay plate (CCO plate) is a composite wear-resistant steel plate produced by welding a high-chromium carbide alloy layer onto a mild steel or low-alloy steel base plate. It is one of the most widely used hardfaced wear solutions in mining, semen, baja, dan industri tenaga listrik.
Compared with conventional wear-resistant steels such as NM400, NM500, or AR400 steel, chromium carbide overlay plate is fundamentally different in both structure and wear mechanism.
1. Structural Difference
| Jenis Bahan | Struktur | Fitur Utama |
|---|---|---|
| Chromium carbide overlay plate | Baja dasar + welded carbide overlay layer | Composite structure |
| NM400 / NM500 wear steel | Alloyed quenched & tempered steel | Homogeneous structure |
| AR400 / AR500 steel | Heat-treated alloy steel | Uniform hardness throughout thickness |
The most important difference is that CCO plates have a two-layer structure, while traditional wear steels are single-material plates.
2. Wear Mechanism Difference
| Jenis Bahan | Main Wear Resistance Mechanism |
|---|---|
| Chromium carbide overlay plate | Hard carbide particles resist abrasion |
| NM400 / NM500 steel | High hardness matrix resists wear |
| baja AR | Kekerasan dan ketangguhan seimbang |
CCO plates rely on extremely hard chromium carbide particles (HRC 58–65), while wear steels rely on overall bulk hardness.
3. Perbandingan Kekerasan dan Kinerja
| Milik | Pelat CCO | Baja Tahan Aus (NM/AR) |
|---|---|---|
| Kekerasan Permukaan | HRC 58–65 | HB 400–500 |
| Ketahanan aus | Excellent in sliding abrasion | Good in impact + abrasi |
| Resistensi dampak | Lebih rendah (brittle surface layer) | Higher toughness |
| Kehidupan pelayanan | Very long in abrasive conditions | Balanced in mixed conditions |
4. Processing Difference
- CCO plate: Requires plasma or laser cutting due to hard surface layer
- Pakailah baja: Easier to cut, membengkokkan, dan mengelas
- CCO plate: May have controlled surface cracks to release stress
- Pakailah baja: No surface cracking is normal
5. Application Difference
| Kondisi Aplikasi | Best Material Choice |
|---|---|
| High sliding abrasion | Chromium carbide overlay plate |
| Dampak tinggi + abrasi | NM400 / NM500 steel |
| Mixed working conditions | AR steel or hybrid solutions |
6. Key Advantage of Chromium Carbide Overlay Plate
- Ketahanan aus yang sangat tinggi di lingkungan yang abrasif
- Umur panjang in chutes, hopper, dan liner
- Replaceable wear surface concept (base plate remains intact)
- Cost efficiency in long-term maintenance
7. Teda Ganghua Wear Plate Supply Capability
Sebagai pemasok baja tahan aus profesional, Teda Ganghua provides chromium carbide overlay plates and other wear-resistant steel solutions tailored to different industrial conditions, termasuk pertambangan, semen, baja, and power generation industries.
Kami mendukung pemotongan yang disesuaikan, pembuatan, and full wear protection system design based on real operating environments.
Jelajahi produk baja tahan aus kami di sini:
Wear Resistant Steel Plates
Kesimpulan
Chromium carbide overlay plate differs from traditional wear-resistant steels because it uses a composite structure with a hard carbide overlay layer rather than a homogeneous steel body. This makes it far superior in abrasive wear conditions but less suitable for high-impact environments.
