An aluminum alloy clad sheet having different anodic oxidation coat colors of both milky white and black gray and a method for producing the same

摘要

The present invention relates to an aluminum alloy sheet material having an elegant milky white anodizing film hue and an aluminum alloy sheet material having an anodic oxidation coating color of black gray emitting far infrared rays, And an aluminum alloy casting body for generating a milky white anodic oxide film and an aluminum alloy casting for black gray anodizing film formation are used to manufacture the above clad plate material, A step of etching and brushing the processed material, a step of physically joining the treated intermediate material and hot rolling and joining, a step of annealing after cold rolling, and an anodizing step to form a milky white / Fabrication of an aluminum alloy clad plate to give anodized film color .