Session Details

Session 10: Light Metals Processing

Abstract Number:

134

Cold sealing is a widely used seal technology used in the aluminum ‎anodizing process. The benefits ‎and problems associated with ‎cold sealing will be discussed. Best practices for controlling a cold ‎seal ‎bath will be detailed.‎

Topics:

Light Metals Finishing

Cold sealing, also known as room temperature sealing uses nickel ‎fluoride for the sealing reaction. ‎Operating temperatures range ‎from 80 to 90F, with temperature regulation being recommended. ‎Cold ‎sealing has a sealing mechanism that is unique from other ‎seal methods. Good management practices ‎can realize cost and ‎environmental benefits. Cold sealing also affords excellent ‎alkaline resistance. ‎In conjunction with proper anodizing ‎techniques, cold sealing can enhance the lightfastness of dyed ‎‎anodized articles. Cold sealing meets MIL-A8625 requirements, ‎though other specifications may ‎offer limitations.‎