Approach Study of Improving Surface Corrosion Resistance of 6063 Aluminum Alloy

The approach to improving surface corrosion resistance of 6063 aluminum alloy was studied,and the mechanism of surface corrosion resistance was discussed in theory.The results indicate that reasonable chemical composition is of advantage to corrosion resistance,its property is better as Mg,Si mass ratio at about 1.55.The necessary homogenizing treatment of cast ingot subserves corrosion resistance of aluminum extrusion,and the cast ingot should be cooled quickly after heat treatment.Significant effect of extrusion technology on erosive property is observed for aluminum alloy,aluminum extrusion has good corrosion resistance when outlet temperature is at about 510℃.