Study Corrosion Cleaning and Treatment Flash Cards

 
Pile Management Card
Corrosion Cleaning and Treatment

loading
Corrosion cleaning approved rules:
Use emulsion cleaner or solvent, nothing to heat metal. Commercial paint remover for paint, oil, grime. No chemical treatment for rust or corrosion.
What is Anodizing?
Electro-plating system for AL, bonding to surface for al Oxide build up. Creates a hard unbroken oxide film bonded to the AL.
What is Alodine?
Helps convert top layer of Al to AL oxide for protective layer. Creates a physical barrier for chemical and electro-mechanical corrosion. Can be painted.
What methods to use on AL.
Etch out corrosion with acid, ecthes fine lines for primer and paint to adhere. ALCLAD, wash primer only no acid, acid will eat AL clad. Zinc Chromate primer for chemical barrier from electrolyte and paint for chemical protection. Complete process quickly, dont sit around.
What methods to use on steel?
Remove and prevent with oil or grease, primer or paint.
Magnesium cleaning process is ???
Grit blast with clean beads. Inspect with 5-10x magnifing glass. Remove additioanl material 2-3 thousands with 240-400 grit sandpaper. Treat with 55 solution of chromic acid to neutralize salts. Water wash, Comp. air dry.
What tools are not used to clean corrosion?
Grinding wheels, steel wool, wire brush, anything that may leave metal.
What tools are used to clean corrosion?
Natural bristle brushes, non-metalic scrub pads, solid cutting tools, grit blaster, household abrasives (Bon Ami = no chroline.
Place this card into pile: