The flux-cored wire is divided into seamed and seamless flux-cored wire according to the production characteristics. The finished wire of the seamless flux-cored wire can be copper-plated, and the moisture-proof property during the wire storage process and the conductivity during the welding process are superior to the slot-shaped flux-cored wire.
Flux cored wire has different classification methods according to different conditions.
According to the protection situation, it can be divided into gas protection (CO2, Ar-rich mixed gas) and self-protection, submerged arc and open arc.
According to the diameter of the wire, it can be divided into a fine diameter (2.0 mm or less) and a coarse diameter (2.0 mm or more).
According to the wire section, it can be divided into simple section and complex section.
According to the power supply, it can be divided into AC steep drop characteristic power supply and DC flat characteristic power supply.
According to the filling material, it can be divided into slag-forming flux cored wire (titanium oxide type, titanium calcium type, fluorine calcium type) and metal powder core flux cored wire.
Common gas shielded flux cored wires are: AWS A5.20 E70T-1C, E71T-1C, E308LT-1, E309LT-1, E316LT-1, E2209LT-1, etc. (typical diameter 1.2mm-1.6mm)
Common self-shielded flux cored wire is: AWS A5.20 E71T-GS, E71T-11 general diameter: 1.6mm-3.2mm
Common submerged arc welding wires are: AWS A5.17 F6A0/EM12, F7A4/EM12K, F7A0/EH14, F6A0/EL12, F7A0/EM13K, etc. (general diameter: 2.4mm-4.0mm)