Acid Etch for Aluminum Extrusion: Technical, Economical and Environmental Aspects
Alberto Abad Fuentes, Alvarez Schaer, S.A., Valencia, Spain
Track: VALUE-ADDED PROCESSES - Finishing
ABSTRACT—The purpose of the etching process is to reduce the brightness of extruded aluminum,
remove or mask extrusion lines and defects, and prepare the aluminum surface for anodizing. The
etching process can be carried out physically, for example through blasting, or chemically, in either an
acid or alkaline medium.
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