Plaques d'usure résistantes à l'abrasion
Abrasion resistant wear plates are available in multiple international grade systems including AR, Hardox, Nouveau-Mexique, XAR, and EH series. Each system offers different hardness levels and performance balances for specific industrial environments.
- Description
Abrasion resistant wear plates are high-hardness steel materials specifically designed to resist friction, impact, and abrasive wear in severe industrial environments. These steels are widely used in mining, production de ciment, engins de chantier, systèmes de recyclage, et matériel de manutention lourd.
Internationally, abrasion resistant steels are classified by hardness level, alloy system, or regional standards. Different countries and manufacturers use different grade naming systems, but most materials are designed around the same principle: achieving a balance between hardness, dureté, et soudabilité.
1. Série AR (North American Standard)
The AR series is one of the most widely recognized international abrasion resistant steel systems.
«AR» signifie résistant à l'abrasion.
| Grade | Dureté approximative | Principales caractéristiques |
|---|---|---|
| AR400 | ~400 HB | Good wear resistance and weldability |
| AR450 | ~450 HB | Résistance à l’abrasion améliorée |
| AR500 | ~500 HB | High wear resistance for severe conditions |
| AR600 | ~600 HB | Résistance extrême à l'usure, formabilité limitée |
Applications typiques
- Doublures de camion minier
- Revêtements de concasseur
- Goulottes de convoyeur
- Godets d'excavatrice
2. Hardox Series (Suède)
Hardox is a globally recognized wear plate system developed for high-performance abrasive environments.
| Grade | Dureté | Caractéristiques |
|---|---|---|
| Hardox 400 | ~400 HB | Robustesse et résistance à l'usure équilibrées |
| Hardox 450 | ~450 HB | Improved service life |
| Hardox 500 | ~500 HB | Excellente résistance à l'abrasion |
| Hardox 550/600 | Très haute dureté | Environnements d'usure extrêmes |
Caractéristiques
- Excellente résistance aux chocs
- High toughness despite hardness
- Good processing and welding capability
Applications courantes
- Carrosseries de camions-bennes
- Équipement minier lourd
- Industrial wear liners
3. Série NM (China Standard)
The NM series is one of the most common wear plate systems used in China.
“NM” generally refers to wear resistant steel plate.
| Grade | Dureté approximative | Utilisation principale |
|---|---|---|
| NM360 | ~360 HB | General wear conditions |
| NM400 | ~400 HB | Mines et construction |
| NM450 | ~450 HB | Usure moyennement forte |
| NM500 | ~500 HB | Severe abrasion conditions |
Caractéristiques
- Similar performance to AR grades
- Widely used in industrial fabrication
- Good cost-performance balance
4. XAR Series (Allemagne)
XAR wear plates are European high-hardness abrasion resistant steels.
| Grade | Dureté | Caractéristiques |
|---|---|---|
| XAR400 | ~400 HB | Bonne résistance à l'usure |
| XAR450 | ~450 HB | Increased abrasion performance |
| XAR500 | ~500 HB | Applications à usure sévère |
Applications
- Équipement de ciment
- Earthmoving machinery
- Systèmes de manutention de matériaux en vrac
5. JFE EH Series (Japon)
Japanese wear-resistant steels are known for stable quality and impact resistance.
| Grade | Dureté | Caractéristiques |
|---|---|---|
| EH360 | ~360 HB | Bonne soudabilité |
| EH400 | ~400 HB | Usure et résistance équilibrées |
| EH500 | ~500 HB | Haute résistance à l'usure |
Utilisations typiques
- Machines industrielles
- Steel mill liners
- Équipement minier
6. Acier à haute teneur en manganèse (MN13)
Unlike quenched wear plates, Mn13 is a work-hardening wear steel.
Caractéristiques
- Surface hardens under impact
- Excellente résistance aux chocs
- Good for high-impact wear conditions
Applications
- Mâchoires de broyeur
- Passages à niveau
- Impact liners
7. Comparison of Major Wear Plate Grades
| Grade System | Plage de dureté | Principal avantage |
|---|---|---|
| Série AR | 400–600 HB | International standard recognition |
| Hardox | 400–600 HB | High toughness and premium quality |
| Série NM | 360–500 HB | Cost-effective industrial use |
| XAR Series | 400–500 HB | European engineering applications |
| Acier Mn13 | Écrouissage | Haute résistance aux chocs |
8. Selection Considerations
Different abrasion resistant wear plates are selected based on:
- Type d'usure (glissement, impact, gougeage)
- Niveau de dureté requis
- Weldability requirements
- Processing complexity
- Environnement de services
Higher hardness usually improves wear resistance, while lower hardness grades often provide better toughness and easier fabrication.
