The welding wire is used as a filler metal or as a metal wire welding material for conducting electricity at the same time. In gas welding and gas tungsten arc welding, the welding wire is used as filler metal; In submerged arc welding, electroslag welding and other MIG welding, the welding wire is not only the filler metal, but also the conductive electrode. The surface of the welding wire is not coated with the anti oxidation flux.
1) For the welding of various steels, it is very convenient and easy to emphasize the composition and proportion of the whole flux, which can provide the required weld chemical composition.
2) The process performance is good, and the weld formation is beautiful. The joint protection of gas and slag is used to obtain good formation. The arc stabilizer is added to stabilize the arc and ensure uniform droplet transfer.
3) High deposition speed and production efficiency The flux cored wire has high current density and high melting speed under the same welding current. Its deposition rate is about 85% - 90%, and the productivity is about 3-5 times higher than that of electrode arc welding.
4) Large welding current can be used for all position welding.