Kenakan Pelat Baja
Wear steel plate is engineered through a carefully balanced alloy system and heat treatment process to achieve high hardness and strong toughness.
Keunggulan utamanya antara lain:
- High carbon and alloy element design for wear resistance
- Hardness range from 360 HB ke 500+ HB
- Martensitic/bainitic microstructure for durability
- Excellent performance in abrasion and impact environments
- Keterangan
Wear steel plate (wear resistant steel plate) adalah jenis high-strength alloy steel designed to resist abrasion, dampak, dan keausan geser in harsh working environments. Ini banyak digunakan di pertambangan, mesin konstruksi, tanaman semen, and bulk material handling systems where standard steel cannot provide sufficient service life.
The performance of wear steel plate mainly depends on its kandungan karbon, 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.
| Elemen | Kisaran Khas | Fungsi |
|---|---|---|
| Karbon (C) | 0.20 – 0.35% | Meningkatkan kekerasan dan ketahanan aus |
| mangan (M N) | 0.50 – 1.60% | Meningkatkan ketangguhan dan kemampuan pengerasan |
| Silikon (Dan) | 0.20 – 0.70% | Strengthens matrix structure |
| Kromium (Kr) | 0.50 – 2.50% | Meningkatkan ketahanan aus dan korosi |
| Nikel (Di dalam) | 0 – 1.50% | Meningkatkan ketangguhan dan ketahanan benturan |
| Boron (B) | jejak (0.001–0.005%) | Increases hardenability significantly |
2. Hardness Performance of Wear Steel Plate
Wear steel is primarily classified by its kekerasan brinell (HB) level:
| Nilai | Kekerasan (PBR) | Performance Level |
|---|---|---|
| NM360 | ~330–390 HB | Standard wear resistance |
| NM400 | ~380–460 HB | Medium-high wear resistance |
| NM450 | ~430–500 HB | Ketahanan aus yang tinggi |
| NM500 | ~470–550 HB | Extra high wear resistance |
Key principle:
Higher hardness = better wear resistance, but slightly reduced formability.
3. Sifat Mekanik
Wear steel plates are designed for high-load and high-impact conditions.
- Kekuatan tarik tinggi
- Resistensi dampak yang kuat
- Good fatigue resistance
- Controlled hardness distribution
Typical tensile strength range:
- 1000 – 1600 MPa (depending on grade and heat treatment)
4. Karakteristik Struktur Mikro
Wear steel performance is achieved through controlled heat treatment:
- Martensite or bainite dominant structure
- Fine carbide dispersion in matrix
- Uniform hardness distribution across thickness
Hasil:
Combination of kekerasan tinggi + ketangguhan yang cukup prevents brittle fracture under impact.
5. Fitur Kinerja Utama
1. Ketahanan Abrasi Yang Sangat Baik
- Resists sliding and particle wear
- Suitable for sand, bijih, batu bara, and gravel environments
2. Resistensi Dampak Tinggi
- Maintains structural integrity under heavy loading
- Reduces cracking in dynamic working conditions
3. Kemampuan Las yang Baik (Terkendali)
- Can be welded with proper preheating and procedures
- Suitable for structural fabrication and repair
4. Umur Panjang
- 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
- Lapisan dan saluran pabrik semen
- Sistem penanganan batubara
- Bucket dan bilah ekskavator
- Suku cadang mesin konstruksi aus
- Hopper dan konveyor material massal
