- 説明
クロム炭化物オーバーレイプレート: Differences Between Hardfaced Plates and Other Wear-Resistant Steels
炭化クロムオーバーレイプレート (CCOプレート) 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, セメント, 鋼鉄, and power industries.
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
| 材質の種類 | 構造 | 主な特長 |
|---|---|---|
| 炭化クロムオーバーレイプレート | ベーススチール + welded carbide overlay layer | Composite structure |
| NM400 / NM500 wear steel | Alloyed quenched & 焼き戻し鋼 | Homogeneous structure |
| AR400 / AR500鋼 | 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
| 材質の種類 | Main Wear Resistance Mechanism |
|---|---|
| 炭化クロムオーバーレイプレート | Hard carbide particles resist abrasion |
| NM400 / NM500 steel | High hardness matrix resists wear |
| AR鋼 | バランスの取れた硬度と靱性 |
CCO plates rely on extremely hard chromium carbide particles (HRC 58 ～ 65), while wear steels rely on overall bulk hardness.
3. Hardness and Performance Comparison
| 財産 | CCOプレート | 耐摩耗鋼 (NM/AR) |
|---|---|---|
| Surface hardness | HRC 58 ～ 65 | HB 400–500 |
| 耐摩耗性 | Excellent in sliding abrasion | Good in impact + 摩耗 |
| Impact resistance | より低い (brittle surface layer) | Higher toughness |
| 寿命 | Very long in abrasive conditions | Balanced in mixed conditions |
4. Processing Difference
- CCOプレート: Requires plasma or laser cutting due to hard surface layer
- 摩耗鋼: Easier to cut, 曲げる, and weld
- CCOプレート: May have controlled surface cracks to release stress
- 摩耗鋼: No surface cracking is normal
5. Application Difference
| 適用条件 | Best Material Choice |
|---|---|
| High sliding abrasion | 炭化クロムオーバーレイプレート |
| 大きな影響力 + 摩耗 | NM400 / NM500 steel |
| Mixed working conditions | AR steel or hybrid solutions |
6. Key Advantage of Chromium Carbide Overlay Plate
- 非常に高い耐摩耗性 研磨環境で
- 長寿命 in chutes, ホッパー, そしてライナー
- Replaceable wear surface concept (base plate remains intact)
- Cost efficiency in long-term maintenance
7. Teda Ganghua Wear Plate Supply Capability
As a professional wear-resistant steel supplier, 泰達江華 provides chromium carbide overlay plates and other wear-resistant steel solutions tailored to different industrial conditions, including mining, セメント, 鋼鉄, および発電産業.
We support customized cutting, 製造, and full wear protection system design based on real operating environments.
ここで当社の耐摩耗鋼製品をご覧ください:
Wear Resistant Steel Plates
結論
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.
