Surface treatment agent for welding wire and welding wire surface-treated with the same

摘要

Disclosed herein is a surface treatment oil for treating the surface of a welding wire. The surface treatment oil comprises at least one alkali metal compound and/or an alkaline earth metal compound, a Zn compound, and a hydrocarbon compound wherein the hydrocarbon compound contains at least two functional groups selected from the group consisting of ester, carboxylic acid, alkane and sulfonic acid groups. Further disclosed is a welding wire surface treated with the surface treatment oil. The surface treatment oil can provide good rust resistance, wear resistance, arc stability and wire feedability to a welding wire when being applied to the surface of the welding wire.