Imported mold wire classification introduction

When welding, it is used as a filler metal or as a wire welding material for conducting electricity. In gas welding and tungsten gas shielded arc welding, the welding wire is used as filler metal; in submerged arc welding, electroslag welding and other gas metal arc welding, the welding wire is both a filler metal and a conductive electrode. Welding wire can be divided into 3 categories. The surface of the wire is not coated with an oxidation-preventing flux.