METAL SUBSTRATES
I. Preliminary Preparation
A. Metal substrates must be structurally sound prior to any resinous system being applied.
B. Remove all foreign materials such as oil and grease with solvents or other degreasing compounds.
C. All scaling and rust must also be removed mechanically by sanding, sandblasting, or abrasion.
II. Treat the blasted/abraded surface with a phosphoric acid solution
as described below in order to prevent rust formation if the surface is left exposed for some time prior to application of the resin system.A. Always use a 10% solution of Phosphoric Acid.
B. Mix acid solution in either glass, plastic, or earthen containers (never use metal containers), by adding Phosphoric Acid to water. NEVER VICE-VERSA due to heating or splashing which may occur.
Workers should be protected with safety glasses, rubber gloves, and boots. If skin or eye contact occurs, rinse affected area thoroughly with clean water and follow Material Safety Data recommendations.
C. Apply phosphoric acid solution by either paint brush or rubber squeegee and allow metal surface to AIR DRY.
DO NOT FLUSH METAL SURFACE WITH WATER.
III. Protect surface from contamination until the primer is applied.
IV. Wipe metal surface with MEK solvent immediately before primer application.
Back to Surface Prep Main Page