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Wear steel plate is engineered through a carefully balanced alloy system and heat treatment process to achieve high hardness and strong toughness.
Suas principais vantagens incluem:
- High carbon and alloy element design for wear resistance
- Hardness range from 360 Hb para 500+ HB
- Martensitic/bainitic microstructure for durability
- Excellent performance in abrasion and impact environments
- Descrição
Wear steel plate (wear resistant steel plate) é um tipo de high-strength alloy steel designed to resist abrasion, impacto, e desgaste deslizante in harsh working environments. É amplamente utilizado na mineração, maquinaria de construção, fábricas de cimento, and bulk material handling systems where standard steel cannot provide sufficient service life.
The performance of wear steel plate mainly depends on its teor de carbono, alloying elements, and microstructure control.
1. Typical Chemical Composition of Wear Steel Plate
Wear resistant steel is usually based on medium-carbon low-alloy steel systems, optimized for hardness and toughness balance.
| Elemento | Faixa Típica | Função |
|---|---|---|
| Carbono (C) | 0.20 – 0.35% | Aumenta a dureza e a resistência ao desgaste |
| Manganês (Mn) | 0.50 – 1.60% | Melhora a tenacidade e temperabilidade |
| Silício (E) | 0.20 – 0.70% | Strengthens matrix structure |
| Cromo (Cr) | 0.50 – 2.50% | Melhora a resistência ao desgaste e à corrosão |
| Níquel (Em) | 0 – 1.50% | Melhora a tenacidade e a resistência ao impacto |
| Boro (B) | rastrear (0.001–0.005%) | Increases hardenability significantly |
2. Hardness Performance of Wear Steel Plate
Wear steel is primarily classified by its Dureza Brinell (HB) level:
| Nota | Dureza (HBW) | Performance Level |
|---|---|---|
| NM360 | ~330–390 HB | Resistência ao desgaste padrão |
| NM400 | ~380–460 HB | Medium-high wear resistance |
| NM450 | ~430–500 HB | Alta resistência ao desgaste |
| NM500 | ~470–550 HB | Extra high wear resistance |
Key principle:
Maior dureza = melhor resistência ao desgaste, but slightly reduced formability.
3. Propriedades Mecânicas
Wear steel plates are designed for high-load and high-impact conditions.
- Alta resistência à tração
- Strong impact resistance
- Good fatigue resistance
- Controlled hardness distribution
Typical tensile strength range:
- 1000 – 1600 MPa (depending on grade and heat treatment)
4. Características da microestrutura
Wear steel performance is achieved through controlled heat treatment:
- Martensite or bainite dominant structure
- Fine carbide dispersion in matrix
- Uniform hardness distribution across thickness
Result:
Combination of alta dureza + resistência suficiente prevents brittle fracture under impact.
5. Principais recursos de desempenho
1. Excelente resistência à abrasão
- Resists sliding and particle wear
- Suitable for sand, minério, carvão, and gravel environments
2. Resistência ao alto impacto
- Maintains structural integrity under heavy loading
- Reduces cracking in dynamic working conditions
3. Boa soldabilidade (Controlado)
- Can be welded with proper preheating and procedures
- Suitable for structural fabrication and repair
4. Longa vida útil
- Significantly extends equipment lifetime
- Reduces maintenance and replacement costs
6. Common Applications of Wear Steel Plate
Wear resistant steel is widely used in:
- Mining machinery and dump trucks
- Cement plant liners and chutes
- Sistemas de manuseio de carvão
- Excavator buckets and blades
- Construction machinery wear parts
- Bulk material hoppers and conveyors
