FCW CNV
Tubular wire for self shielded metal arc hardfacing
Description & applications
• Tubular wire for self shielded metal arc hardfacing
• Highly-alloyed chromium cast iron with a high concentration of complex carbides
• High chromium cast iron for hardfacing components subject to extremely severe abrasive wear and moderate impact up to 600°C.
APPLICATIONS
FCW CNV 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. The properties are reached in only three layers and relief checking is normal.
Examples
Used for crushing, riddling, blast furnace hoppers and throats, ovens, extractor fans etc.
Classification
| EN 14700 |
|---|
| T Fe16 |
Typical weld metal composition (%)
| C | Mn | Si | Cr | Nb | Mo | W | V | Fe |
|---|---|---|---|---|---|---|---|---|
| 5.5 | 0.5 | 1.5 | 22.0 | 6.0 | 5.5 | 2.0 | 1.0 | Rest |
All weld metal mechanical properties
| Hardness – 3-layer deposit on mild steel |
|---|
| 64 – 66 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] | 1.6 - 2.0 - 2.4 | 2.4 - 2.8 | 2.4 - 2.8 |
|---|---|---|---|
| Packing(s) | Spool BS 300 | Coil B 450 | Drum |
| Weight [Kg] | 15 | 25 | Up to 330 |
| Description | - | - | - |