diamondspark S 55 HP is a seamless flux-cored wire for submerged arc welding of mild steel, built for high productivity. It is used on steel structures, tanks, machine frames and workshop work on plain carbon steel.
Submerged arc welding gives a very high deposition rate on long, repeatable welds. The seamless construction limits moisture pick-up in the core and keeps the hydrogen level in the weld low, and the deposition rate shows on long welds and heavier walls.
- Classification EN ISO: 14171-A, T3
- AWS classification: A5.17 / SFA-5.17, EC1
- Shielding: flux matched to the wire, no shielding gas
Clean rust, paint and grease out of the groove, contaminated plate gives porosity even with the parameters set correctly. Keep an even flux layer over the arc, too thin a layer exposes the arc and too thick a one spoils the bead shape. Watch the wire stick-out and the position of the head against the weld centre line, under a flux you cannot see the pool and a mistake shows only after the slag is chipped off.
