Cause of Surface Corrosion of Wire Rod Products

The feed back from users showed that in the same stored environment and the same steel, the surface corrosion rates of wire rod products produced by different steel mills were different. Aimming at this situation, atmospheric corrosion contrast experiment was performed and the surface oxide layer was studied, it was found that the reason of faster corrosion was that the wire rod products had more surface defects on oxide layer. The impact factor on the oxide layer and the feasible measures to prevent this phenomena were analyzed and discussed.