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Composite SAW Wire
Lotherme HF-20
AWS: SFA
EN ISO CODE:
Composite submerged arc welding wires recommended with Lotherme SAF-704 flux for re-building of steel mill rolls.
LOTHERME HF-20 is a composite SAW wire of 1-2% Cr, 2-3% Ni, low carbon with controlled addition of Silicon & Molybdenum for buffer layer deposits. The weld metal has excellent bonding property, resistance to solidification cracking and is easily machinable.
LOTHERME SAF-704 is an agglomerated basic flux, shall be re-dried at 350°C before use.
| Wire | C | Mn | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|
| Lotherme HF-20 | 0.08 max | 0.50-1.20 | 0.60 max | 1.2-2.0 | 2.0-3.0 | 0.40-0.80 | 0.06-0.15 |
| LOTHERME HF-20 & LOTHERME SAF-704 flux, on 3-layer | 23-28 HRC |
| 1 layer LOTHERME HF-20, 2 layers LOTHERME HF-45 with LOTHERME SAF-704 flux | 40-45 HRC |
| 1 layer LOTHERME HF-20, 2 layers LOTHERME HF-55 with LOTHERME SAF-704 flux | 50-54 HRC |
| Wire diameter, mm | Current, Amp | Voltage, V | Linear travel speed, mm/min |
| 3.2 | 350 – 450 | 28 – 30 | 400 – 500 |
Standard wire size is 3.2mm. The wire is supplied in a layer wound 25 kg metallic ring packed in a shrinkwrapped corrugated box. Wire is also available in 200/250kg card-board drum packing packed on a pallet. Flux is supplied in 25kg poly-lined bag.
Composite SAW Wire
