BÖHLER Q Zn GS is a metal-cored wire for mild steel, made for single layer welding of galvanised sheet. It works on welded structures, halls, frames, machine parts and repairs to structural steel.
The wire leaves only silicate islands instead of a full slag layer, which shortens the cleaning time between passes. It gives a high deposition rate with a stable spray arc, and its metal core produces an almost slag-free bead as from a solid wire.
- Classification EN ISO: 17632-A T3T Z M M21 1
- AWS classification: A5.18 / SFA-5.18 E70C-GS
- Shielding gas: M21, M20
- Approvals: CE
Match the voltage to the wire feed speed, too low a setting gives a convex bead and no fusion into the edges. Keep the gas cover complete, without a full slag layer the pool is more sensitive to draughts. Check the feed roll pressure, a metal-cored wire is easier to crush than a solid one.
