FCW VNB
Hardfacing anti-abrasion
Description & applications
• Tubular wire for self shielded metal arc hardfacing
• Highly-alloyed chromium cast iron containing complex niobium, vanadium and chromium carbides
• High chromium cast iron for hardfacing components subject to extremely severe abrasive wear and moderate impact up to 400°C.
APPLICATIONS
FCW VNB is designed to give a weld deposit of particularly high hardness and wear resistance on account of the dispersion of complex carbides it contains. This gives superior performance compared to standard chromium cast irons up to 400°C. The properties are reached in only three layers and relief checking is normal.
Examples
Used for rotating excavator bucket, lignite crushers-fans, Clinker crushers, homogenisers for coal or coke, Sintering installations, equipment for the electro-metallurgical industry etc.
Classification
| EN 14700 |
|---|
| T Fe16 |
Typical weld metal composition (%)
| C | Mn | Si | Cr | Nb | V | B | Fe |
|---|---|---|---|---|---|---|---|
| 5.5 | 0.5 | 1.3 | 16.0 | 6.5 | 6.0 | 1.0 | Rest |
All weld metal mechanical properties
| Hardness – 3-Layer deposit on mild steel |
|---|
| 65-67 HRc |
Shielding gas
| Current type | DC (+) |
|---|---|
| Shielding gas | Self shielded |
Operating conditions
| Diameter [mm] | Amperage [A] - Range | Amperage [A] - Optimum | Voltage [V] - Range | Voltage [V] - Optimum | Stick-out [mm] - Range | Stick-out [mm] - Optimum |
|---|---|---|---|---|---|---|
| 1.6 | 150-350 | 270 | 26-35 | 28 | 25-50 | 25 |
| 2.0 | 200-400 | 300 | 26-35 | 28 | 25-50 | 35 |
| 2.4 | 250-450 | 350 | 26-35 | 28 | 25-50 | 40 |
| 2.8 | 250-450 | 400 | 26-35 | 30 | 25-50 | 40 |
Welding positions
Flat, half up, half down
Packings & Diameters
| Diameters [mm] | ≤ 2.4 mm | ≥ 2.4 mm | ≥ 2.4 mm |
|---|---|---|---|
| Packing(s) | Spool : BS 300 | Coil : B 450 | Drum |
| Weight [Kg] | 15 | 25 | Up to 330 |
| Description | - | - | - |